mpegvideo_enc.c 157 KB
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/*
 * The simplest mpeg encoder (well, it was the simplest!)
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 * Copyright (c) 2000,2001 Fabrice Bellard
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 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
 *
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 * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
 *
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 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
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 * @file
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 * The simplest mpeg encoder (well, it was the simplest!).
 */

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#include "libavutil/internal.h"
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#include "libavutil/intmath.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "dct.h"
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#include "dsputil.h"
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#include "mpeg12.h"
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#include "mpegvideo.h"
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#include "h261.h"
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#include "h263.h"
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#include "mathops.h"
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#include "mjpegenc.h"
#include "msmpeg4.h"
#include "faandct.h"
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#include "thread.h"
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#include "aandcttab.h"
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#include "flv.h"
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#include "mpeg4video.h"
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#include "internal.h"
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#include "bytestream.h"
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#include <limits.h>
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#include "sp5x.h"
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static int encode_picture(MpegEncContext *s, int picture_number);
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static int dct_quantize_refine(MpegEncContext *s, int16_t *block, int16_t *weight, int16_t *orig, int n, int qscale);
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static int sse_mb(MpegEncContext *s);
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static void denoise_dct_c(MpegEncContext *s, int16_t *block);
static int dct_quantize_trellis_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
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static uint8_t default_mv_penalty[MAX_FCODE + 1][MAX_MV * 2 + 1];
static uint8_t default_fcode_tab[MAX_MV * 2 + 1];
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const AVOption ff_mpv_generic_options[] = {
    FF_MPV_COMMON_OPTS
    { NULL },
};

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void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64],
                       uint16_t (*qmat16)[2][64],
                       const uint16_t *quant_matrix,
                       int bias, int qmin, int qmax, int intra)
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{
    int qscale;
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    int shift = 0;
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    for (qscale = qmin; qscale <= qmax; qscale++) {
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        int i;
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        if (dsp->fdct == ff_jpeg_fdct_islow_8 ||
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            dsp->fdct == ff_jpeg_fdct_islow_10 ||
            dsp->fdct == ff_faandct) {
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            for (i = 0; i < 64; i++) {
                const int j = dsp->idct_permutation[i];
                /* 16 <= qscale * quant_matrix[i] <= 7905
                 * Assume x = ff_aanscales[i] * qscale * quant_matrix[i]
                 *             19952 <=              x  <= 249205026
                 * (1 << 36) / 19952 >= (1 << 36) / (x) >= (1 << 36) / 249205026
                 *           3444240 >= (1 << 36) / (x) >= 275 */
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                qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
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                                        (qscale * quant_matrix[j]));
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            }
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        } else if (dsp->fdct == ff_fdct_ifast) {
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            for (i = 0; i < 64; i++) {
                const int j = dsp->idct_permutation[i];
                /* 16 <= qscale * quant_matrix[i] <= 7905
                 * Assume x = ff_aanscales[i] * qscale * quant_matrix[i]
                 *             19952 <=              x  <= 249205026
                 * (1 << 36) / 19952 >= (1 << 36) / (x) >= (1 << 36) / 249205026
                 *           3444240 >= (1 << 36) / (x) >= 275 */
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                qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) /
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                                        (ff_aanscales[i] * (int64_t)qscale * quant_matrix[j]));
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            }
        } else {
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            for (i = 0; i < 64; i++) {
                const int j = dsp->idct_permutation[i];
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                /* We can safely suppose that 16 <= quant_matrix[i] <= 255
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                 * Assume x = qscale * quant_matrix[i]
                 * So             16 <=              x  <= 7905
                 * so (1 << 19) / 16 >= (1 << 19) / (x) >= (1 << 19) / 7905
                 * so          32768 >= (1 << 19) / (x) >= 67 */
                qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
                                        (qscale * quant_matrix[j]));
                //qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) /
                //                    (qscale * quant_matrix[i]);
                qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX) /
                                       (qscale * quant_matrix[j]);

                if (qmat16[qscale][0][i] == 0 ||
                    qmat16[qscale][0][i] == 128 * 256)
                    qmat16[qscale][0][i] = 128 * 256 - 1;
                qmat16[qscale][1][i] =
                    ROUNDED_DIV(bias << (16 - QUANT_BIAS_SHIFT),
                                qmat16[qscale][0][i]);
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            }
        }

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        for (i = intra; i < 64; i++) {
            int64_t max = 8191;
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            if (dsp->fdct == ff_fdct_ifast) {
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                max = (8191LL * ff_aanscales[i]) >> 14;
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            }
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            while (((max * qmat[qscale][i]) >> shift) > INT_MAX) {
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                shift++;
            }
        }
    }
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    if (shift) {
        av_log(NULL, AV_LOG_INFO,
               "Warning, QMAT_SHIFT is larger than %d, overflows possible\n",
               QMAT_SHIFT - shift);
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    }
}

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static inline void update_qscale(MpegEncContext *s)
{
    s->qscale = (s->lambda * 139 + FF_LAMBDA_SCALE * 64) >>
                (FF_LAMBDA_SHIFT + 7);
    s->qscale = av_clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
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    s->lambda2 = (s->lambda * s->lambda + FF_LAMBDA_SCALE / 2) >>
                 FF_LAMBDA_SHIFT;
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}

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void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix)
{
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    int i;

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    if (matrix) {
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        put_bits(pb, 1, 1);
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        for (i = 0; i < 64; i++) {
            put_bits(pb, 8, matrix[ff_zigzag_direct[i]]);
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        }
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    } else
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        put_bits(pb, 1, 0);
}

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/**
 * init s->current_picture.qscale_table from s->lambda_table
 */
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void ff_init_qscale_tab(MpegEncContext *s)
{
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    int8_t * const qscale_table = s->current_picture.qscale_table;
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    int i;

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    for (i = 0; i < s->mb_num; i++) {
        unsigned int lam = s->lambda_table[s->mb_index2xy[i]];
        int qp = (lam * 139 + FF_LAMBDA_SCALE * 64) >> (FF_LAMBDA_SHIFT + 7);
        qscale_table[s->mb_index2xy[i]] = av_clip(qp, s->avctx->qmin,
                                                  s->avctx->qmax);
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    }
}

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static void update_duplicate_context_after_me(MpegEncContext *dst,
                                              MpegEncContext *src)
{
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#define COPY(a) dst->a= src->a
    COPY(pict_type);
    COPY(current_picture);
    COPY(f_code);
    COPY(b_code);
    COPY(qscale);
    COPY(lambda);
    COPY(lambda2);
    COPY(picture_in_gop_number);
    COPY(gop_picture_number);
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    COPY(frame_pred_frame_dct); // FIXME don't set in encode_header
    COPY(progressive_frame);    // FIXME don't set in encode_header
    COPY(partitioned_frame);    // FIXME don't set in encode_header
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#undef COPY
}

/**
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 * Set the given MpegEncContext to defaults for encoding.
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 * the changed fields will not depend upon the prior state of the MpegEncContext.
 */
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static void MPV_encode_defaults(MpegEncContext *s)
{
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    int i;
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    ff_MPV_common_defaults(s);
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    for (i = -16; i < 16; i++) {
        default_fcode_tab[i + MAX_MV] = 1;
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    }
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    s->me.mv_penalty = default_mv_penalty;
    s->fcode_tab     = default_fcode_tab;
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}

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av_cold int ff_dct_encode_init(MpegEncContext *s) {
    if (ARCH_X86)
        ff_dct_encode_init_x86(s);

    if (!s->dct_quantize)
        s->dct_quantize = ff_dct_quantize_c;
    if (!s->denoise_dct)
        s->denoise_dct  = denoise_dct_c;
    s->fast_dct_quantize = s->dct_quantize;
    if (s->avctx->trellis)
        s->dct_quantize  = dct_quantize_trellis_c;

    return 0;
}

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/* init video encoder */
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av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
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{
    MpegEncContext *s = avctx->priv_data;
    int i;
    int chroma_h_shift, chroma_v_shift;

    MPV_encode_defaults(s);

    switch (avctx->codec_id) {
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    case AV_CODEC_ID_MPEG2VIDEO:
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        if (avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
            avctx->pix_fmt != AV_PIX_FMT_YUV422P) {
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            av_log(avctx, AV_LOG_ERROR,
                   "only YUV420 and YUV422 are supported\n");
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            return -1;
        }
        break;
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    case AV_CODEC_ID_LJPEG:
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        if (avctx->pix_fmt != AV_PIX_FMT_YUVJ420P &&
            avctx->pix_fmt != AV_PIX_FMT_YUVJ422P &&
            avctx->pix_fmt != AV_PIX_FMT_YUVJ444P &&
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            avctx->pix_fmt != AV_PIX_FMT_BGR0     &&
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            avctx->pix_fmt != AV_PIX_FMT_BGRA     &&
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            avctx->pix_fmt != AV_PIX_FMT_BGR24    &&
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            ((avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
              avctx->pix_fmt != AV_PIX_FMT_YUV422P &&
              avctx->pix_fmt != AV_PIX_FMT_YUV444P) ||
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             avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)) {
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            av_log(avctx, AV_LOG_ERROR, "colorspace not supported in LJPEG\n");
            return -1;
        }
        break;
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    case AV_CODEC_ID_MJPEG:
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    case AV_CODEC_ID_AMV:
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        if (avctx->pix_fmt != AV_PIX_FMT_YUVJ420P &&
            avctx->pix_fmt != AV_PIX_FMT_YUVJ422P &&
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            avctx->pix_fmt != AV_PIX_FMT_YUVJ444P &&
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            ((avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
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              avctx->pix_fmt != AV_PIX_FMT_YUV422P &&
              avctx->pix_fmt != AV_PIX_FMT_YUV444P) ||
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             avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)) {
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            av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
            return -1;
        }
        break;
    default:
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        if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
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            av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
            return -1;
        }
    }

    switch (avctx->pix_fmt) {
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    case AV_PIX_FMT_YUVJ444P:
    case AV_PIX_FMT_YUV444P:
        s->chroma_format = CHROMA_444;
        break;
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    case AV_PIX_FMT_YUVJ422P:
    case AV_PIX_FMT_YUV422P:
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        s->chroma_format = CHROMA_422;
        break;
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    case AV_PIX_FMT_YUVJ420P:
    case AV_PIX_FMT_YUV420P:
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    default:
        s->chroma_format = CHROMA_420;
        break;
    }

    s->bit_rate = avctx->bit_rate;
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    s->width    = avctx->width;
    s->height   = avctx->height;
    if (avctx->gop_size > 600 &&
        avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
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        av_log(avctx, AV_LOG_WARNING,
               "keyframe interval too large!, reducing it from %d to %d\n",
               avctx->gop_size, 600);
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        avctx->gop_size = 600;
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    }
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    s->gop_size     = avctx->gop_size;
    s->avctx        = avctx;
    s->flags        = avctx->flags;
    s->flags2       = avctx->flags2;
    s->max_b_frames = avctx->max_b_frames;
    s->codec_id     = avctx->codec->id;
    s->strict_std_compliance = avctx->strict_std_compliance;
    s->quarter_sample     = (avctx->flags & CODEC_FLAG_QPEL) != 0;
    s->mpeg_quant         = avctx->mpeg_quant;
    s->rtp_mode           = !!avctx->rtp_payload_size;
    s->intra_dc_precision = avctx->intra_dc_precision;
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    s->user_specified_pts = AV_NOPTS_VALUE;

    if (s->gop_size <= 1) {
        s->intra_only = 1;
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        s->gop_size   = 12;
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    } else {
        s->intra_only = 0;
    }

    s->me_method = avctx->me_method;

    /* Fixed QSCALE */
    s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);

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    s->adaptive_quant = (s->avctx->lumi_masking ||
                         s->avctx->dark_masking ||
                         s->avctx->temporal_cplx_masking ||
                         s->avctx->spatial_cplx_masking  ||
                         s->avctx->p_masking      ||
                         s->avctx->border_masking ||
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                         (s->mpv_flags & FF_MPV_FLAG_QP_RD)) &&
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                        !s->fixed_qscale;
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    s->loop_filter      = !!(s->flags & CODEC_FLAG_LOOP_FILTER);
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    if (avctx->rc_max_rate && !avctx->rc_buffer_size) {
        switch(avctx->codec_id) {
        case AV_CODEC_ID_MPEG1VIDEO:
        case AV_CODEC_ID_MPEG2VIDEO:
            avctx->rc_buffer_size = FFMAX(avctx->rc_max_rate, 15000000) * 112L / 15000000 * 16384;
            break;
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        case AV_CODEC_ID_MPEG4:
        case AV_CODEC_ID_MSMPEG4V1:
        case AV_CODEC_ID_MSMPEG4V2:
        case AV_CODEC_ID_MSMPEG4V3:
            if       (avctx->rc_max_rate >= 15000000) {
                avctx->rc_buffer_size = 320 + (avctx->rc_max_rate - 15000000L) * (760-320) / (38400000 - 15000000);
            } else if(avctx->rc_max_rate >=  2000000) {
                avctx->rc_buffer_size =  80 + (avctx->rc_max_rate -  2000000L) * (320- 80) / (15000000 -  2000000);
            } else if(avctx->rc_max_rate >=   384000) {
                avctx->rc_buffer_size =  40 + (avctx->rc_max_rate -   384000L) * ( 80- 40) / ( 2000000 -   384000);
            } else
                avctx->rc_buffer_size = 40;
            avctx->rc_buffer_size *= 16384;
            break;
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        }
        if (avctx->rc_buffer_size) {
            av_log(avctx, AV_LOG_INFO, "Automatically choosing VBV buffer size of %d kbyte\n", avctx->rc_buffer_size/8192);
        }
    }

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    if ((!avctx->rc_max_rate) != (!avctx->rc_buffer_size)) {
        av_log(avctx, AV_LOG_ERROR, "Either both buffer size and max rate or neither must be specified\n");
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        if (avctx->rc_max_rate && !avctx->rc_buffer_size)
            return -1;
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    }

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    if (avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate) {
        av_log(avctx, AV_LOG_INFO,
               "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
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    }

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    if (avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate) {
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        av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
        return -1;
    }

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    if (avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate) {
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        av_log(avctx, AV_LOG_ERROR, "bitrate above max bitrate\n");
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        return -1;
    }

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    if (avctx->rc_max_rate &&
        avctx->rc_max_rate == avctx->bit_rate &&
        avctx->rc_max_rate != avctx->rc_min_rate) {
        av_log(avctx, AV_LOG_INFO,
               "impossible bitrate constraints, this will fail\n");
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    }

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    if (avctx->rc_buffer_size &&
        avctx->bit_rate * (int64_t)avctx->time_base.num >
            avctx->rc_buffer_size * (int64_t)avctx->time_base.den) {
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        av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
        return -1;
    }

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    if (!s->fixed_qscale &&
        avctx->bit_rate * av_q2d(avctx->time_base) >
            avctx->bit_rate_tolerance) {
        av_log(avctx, AV_LOG_ERROR,
               "bitrate tolerance too small for bitrate\n");
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        return -1;
    }

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    if (s->avctx->rc_max_rate &&
        s->avctx->rc_min_rate == s->avctx->rc_max_rate &&
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        (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
         s->codec_id == AV_CODEC_ID_MPEG2VIDEO) &&
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        90000LL * (avctx->rc_buffer_size - 1) >
            s->avctx->rc_max_rate * 0xFFFFLL) {
        av_log(avctx, AV_LOG_INFO,
               "Warning vbv_delay will be set to 0xFFFF (=VBR) as the "
               "specified vbv buffer is too large for the given bitrate!\n");
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    }

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    if ((s->flags & CODEC_FLAG_4MV)  && s->codec_id != AV_CODEC_ID_MPEG4 &&
        s->codec_id != AV_CODEC_ID_H263 && s->codec_id != AV_CODEC_ID_H263P &&
        s->codec_id != AV_CODEC_ID_FLV1) {
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        av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
        return -1;
    }

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    if (s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE) {
        av_log(avctx, AV_LOG_ERROR,
               "OBMC is only supported with simple mb decision\n");
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        return -1;
    }

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    if (s->quarter_sample && s->codec_id != AV_CODEC_ID_MPEG4) {
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        av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
        return -1;
    }

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    if (s->max_b_frames                    &&
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        s->codec_id != AV_CODEC_ID_MPEG4      &&
        s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&
        s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
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        av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
        return -1;
    }

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    if ((s->codec_id == AV_CODEC_ID_MPEG4 ||
         s->codec_id == AV_CODEC_ID_H263  ||
         s->codec_id == AV_CODEC_ID_H263P) &&
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        (avctx->sample_aspect_ratio.num > 255 ||
         avctx->sample_aspect_ratio.den > 255)) {
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        av_log(avctx, AV_LOG_WARNING,
               "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
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               avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
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        av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
                   avctx->sample_aspect_ratio.num,  avctx->sample_aspect_ratio.den, 255);
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    }

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    if ((s->codec_id == AV_CODEC_ID_H263  ||
         s->codec_id == AV_CODEC_ID_H263P) &&
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        (avctx->width  > 2048 ||
         avctx->height > 1152 )) {
        av_log(avctx, AV_LOG_ERROR, "H.263 does not support resolutions above 2048x1152\n");
        return -1;
    }
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    if ((s->codec_id == AV_CODEC_ID_H263  ||
         s->codec_id == AV_CODEC_ID_H263P) &&
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        ((avctx->width &3) ||
         (avctx->height&3) )) {
        av_log(avctx, AV_LOG_ERROR, "w/h must be a multiple of 4\n");
        return -1;
    }
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    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO &&
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        (avctx->width  > 4095 ||
         avctx->height > 4095 )) {
        av_log(avctx, AV_LOG_ERROR, "MPEG-1 does not support resolutions above 4095x4095\n");
        return -1;
    }

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    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
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        (avctx->width  > 16383 ||
         avctx->height > 16383 )) {
        av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support resolutions above 16383x16383\n");
        return -1;
    }
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    if (s->codec_id == AV_CODEC_ID_RV10 &&
        (avctx->width &15 ||
         avctx->height&15 )) {
        av_log(avctx, AV_LOG_ERROR, "width and height must be a multiple of 16\n");
        return AVERROR(EINVAL);
    }

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    if (s->codec_id == AV_CODEC_ID_RV20 &&
        (avctx->width &3 ||
         avctx->height&3 )) {
        av_log(avctx, AV_LOG_ERROR, "width and height must be a multiple of 4\n");
        return AVERROR(EINVAL);
    }

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    if ((s->codec_id == AV_CODEC_ID_WMV1 ||
         s->codec_id == AV_CODEC_ID_WMV2) &&
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         avctx->width & 1) {
         av_log(avctx, AV_LOG_ERROR, "width must be multiple of 2\n");
         return -1;
    }

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    if ((s->flags & (CODEC_FLAG_INTERLACED_DCT | CODEC_FLAG_INTERLACED_ME)) &&
519
        s->codec_id != AV_CODEC_ID_MPEG4 && s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
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        av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
        return -1;
    }

524
    // FIXME mpeg2 uses that too
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    if (s->mpeg_quant && (   s->codec_id != AV_CODEC_ID_MPEG4
                          && s->codec_id != AV_CODEC_ID_MPEG2VIDEO)) {
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        av_log(avctx, AV_LOG_ERROR,
               "mpeg2 style quantization not supported by codec\n");
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        return -1;
    }

532
    if ((s->mpv_flags & FF_MPV_FLAG_CBP_RD) && !avctx->trellis) {
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        av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
        return -1;
    }

537
    if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) &&
538
        s->avctx->mb_decision != FF_MB_DECISION_RD) {
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        av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
        return -1;
    }

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    if (s->avctx->scenechange_threshold < 1000000000 &&
        (s->flags & CODEC_FLAG_CLOSED_GOP)) {
        av_log(avctx, AV_LOG_ERROR,
               "closed gop with scene change detection are not supported yet, "
               "set threshold to 1000000000\n");
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        return -1;
    }

551
    if (s->flags & CODEC_FLAG_LOW_DELAY) {
552
        if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
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            av_log(avctx, AV_LOG_ERROR,
                  "low delay forcing is only available for mpeg2\n");
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            return -1;
        }
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        if (s->max_b_frames != 0) {
            av_log(avctx, AV_LOG_ERROR,
                   "b frames cannot be used with low delay\n");
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            return -1;
        }
    }

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    if (s->q_scale_type == 1) {
        if (avctx->qmax > 12) {
            av_log(avctx, AV_LOG_ERROR,
                   "non linear quant only supports qmax <= 12 currently\n");
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            return -1;
        }
    }

572
    if (s->avctx->thread_count > 1         &&
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        s->codec_id != AV_CODEC_ID_MPEG4      &&
        s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&
        s->codec_id != AV_CODEC_ID_MPEG2VIDEO &&
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        s->codec_id != AV_CODEC_ID_MJPEG      &&
577
        (s->codec_id != AV_CODEC_ID_H263P)) {
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        av_log(avctx, AV_LOG_ERROR,
               "multi threaded encoding not supported by codec\n");
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        return -1;
    }

583
    if (s->avctx->thread_count < 1) {
584
        av_log(avctx, AV_LOG_ERROR,
585
               "automatic thread number detection not supported by codec, "
586
               "patch welcome\n");
587
        return -1;
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    }

590
    if (s->avctx->slices > 1 || s->avctx->thread_count > 1)
591
        s->rtp_mode = 1;
592

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    if (s->avctx->thread_count > 1 && s->codec_id == AV_CODEC_ID_H263P)
        s->h263_slice_structured = 1;

596
    if (!avctx->time_base.den || !avctx->time_base.num) {
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        av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
        return -1;
    }

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    i = (INT_MAX / 2 + 128) >> 8;
    if (avctx->mb_threshold >= i) {
        av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n",
               i - 1);
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        return -1;
    }

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    if (avctx->b_frame_strategy && (avctx->flags & CODEC_FLAG_PASS2)) {
        av_log(avctx, AV_LOG_INFO,
               "notice: b_frame_strategy only affects the first pass\n");
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        avctx->b_frame_strategy = 0;
    }

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    i = av_gcd(avctx->time_base.den, avctx->time_base.num);
    if (i > 1) {
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        av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
        avctx->time_base.den /= i;
        avctx->time_base.num /= i;
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        //return -1;
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    }

622
    if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO || s->codec_id == AV_CODEC_ID_MJPEG || s->codec_id==AV_CODEC_ID_AMV) {
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        // (a + x * 3 / 8) / x
        s->intra_quant_bias = 3 << (QUANT_BIAS_SHIFT - 3);
        s->inter_quant_bias = 0;
    } else {
        s->intra_quant_bias = 0;
        // (a - x / 4) / x
        s->inter_quant_bias = -(1 << (QUANT_BIAS_SHIFT - 2));
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    }

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    if (avctx->qmin > avctx->qmax || avctx->qmin <= 0) {
        av_log(avctx, AV_LOG_ERROR, "qmin and or qmax are invalid, they must be 0 < min <= max\n");
        return AVERROR(EINVAL);
    }

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    if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
        s->intra_quant_bias = avctx->intra_quant_bias;
    if (avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
        s->inter_quant_bias = avctx->inter_quant_bias;
641

Michael Niedermayer's avatar
Michael Niedermayer committed
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    av_log(avctx, AV_LOG_DEBUG, "intra_quant_bias = %d inter_quant_bias = %d\n",s->intra_quant_bias,s->inter_quant_bias);

644
    avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
645

646
    if (avctx->codec_id == AV_CODEC_ID_MPEG4 &&
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        s->avctx->time_base.den > (1 << 16) - 1) {
        av_log(avctx, AV_LOG_ERROR,
               "timebase %d/%d not supported by MPEG 4 standard, "
               "the maximum admitted value for the timebase denominator "
               "is %d\n", s->avctx->time_base.num, s->avctx->time_base.den,
               (1 << 16) - 1);
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        return -1;
    }
    s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;

657
    switch (avctx->codec->id) {
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    case AV_CODEC_ID_MPEG1VIDEO:
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        s->out_format = FMT_MPEG1;
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        s->low_delay  = !!(s->flags & CODEC_FLAG_LOW_DELAY);
        avctx->delay  = s->low_delay ? 0 : (s->max_b_frames + 1);
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        break;
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    case AV_CODEC_ID_MPEG2VIDEO:
664
        s->out_format = FMT_MPEG1;
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        s->low_delay  = !!(s->flags & CODEC_FLAG_LOW_DELAY);
        avctx->delay  = s->low_delay ? 0 : (s->max_b_frames + 1);
        s->rtp_mode   = 1;
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        break;
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    case AV_CODEC_ID_LJPEG:
    case AV_CODEC_ID_MJPEG:
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    case AV_CODEC_ID_AMV:
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        s->out_format = FMT_MJPEG;
        s->intra_only = 1; /* force intra only for jpeg */
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        if (avctx->codec->id == AV_CODEC_ID_LJPEG &&
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            (avctx->pix_fmt == AV_PIX_FMT_BGR0
             || s->avctx->pix_fmt == AV_PIX_FMT_BGRA
             || s->avctx->pix_fmt == AV_PIX_FMT_BGR24)) {
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            s->mjpeg_vsample[0] = s->mjpeg_hsample[0] =
            s->mjpeg_vsample[1] = s->mjpeg_hsample[1] =
            s->mjpeg_vsample[2] = s->mjpeg_hsample[2] = 1;
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        } else if (avctx->pix_fmt == AV_PIX_FMT_YUV444P || avctx->pix_fmt == AV_PIX_FMT_YUVJ444P) {
            s->mjpeg_vsample[0] = s->mjpeg_vsample[1] = s->mjpeg_vsample[2] = 2;
            s->mjpeg_hsample[0] = s->mjpeg_hsample[1] = s->mjpeg_hsample[2] = 1;
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        } else {
685
            s->mjpeg_vsample[0] = 2;
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            s->mjpeg_vsample[1] = 2 >> chroma_v_shift;
            s->mjpeg_vsample[2] = 2 >> chroma_v_shift;
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            s->mjpeg_hsample[0] = 2;
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            s->mjpeg_hsample[1] = 2 >> chroma_h_shift;
            s->mjpeg_hsample[2] = 2 >> chroma_h_shift;
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        }
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        if (!(CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER) ||
            ff_mjpeg_encode_init(s) < 0)
694
            return -1;
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        avctx->delay = 0;
        s->low_delay = 1;
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        break;
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    case AV_CODEC_ID_H261:
699 700
        if (!CONFIG_H261_ENCODER)
            return -1;
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        if (ff_h261_get_picture_format(s->width, s->height) < 0) {
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            av_log(avctx, AV_LOG_ERROR,
                   "The specified picture size of %dx%d is not valid for the "
                   "H.261 codec.\nValid sizes are 176x144, 352x288\n",
                    s->width, s->height);
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            return -1;
        }
        s->out_format = FMT_H261;
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        avctx->delay  = 0;
        s->low_delay  = 1;
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        break;
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    case AV_CODEC_ID_H263:
713
        if (!CONFIG_H263_ENCODER)
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            return -1;
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        if (ff_match_2uint16(ff_h263_format, FF_ARRAY_ELEMS(ff_h263_format),
716
                             s->width, s->height) == 8) {
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            av_log(avctx, AV_LOG_ERROR,
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                   "The specified picture size of %dx%d is not valid for "
                   "the H.263 codec.\nValid sizes are 128x96, 176x144, "
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                   "352x288, 704x576, and 1408x1152. "
721
                   "Try H.263+.\n", s->width, s->height);
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            return -1;
        }
        s->out_format = FMT_H263;
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        avctx->delay  = 0;
        s->low_delay  = 1;
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        break;
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    case AV_CODEC_ID_H263P:
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        s->out_format = FMT_H263;
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        s->h263_plus  = 1;
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        /* Fx */
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        s->h263_aic        = (avctx->flags & CODEC_FLAG_AC_PRED) ? 1 : 0;
        s->modified_quant  = s->h263_aic;
        s->loop_filter     = (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1 : 0;
        s->unrestricted_mv = s->obmc || s->loop_filter || s->umvplus;
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        /* /Fx */
        /* These are just to be sure */
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        avctx->delay = 0;
        s->low_delay = 1;
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        break;
742
    case AV_CODEC_ID_FLV1:
743 744
        s->out_format      = FMT_H263;
        s->h263_flv        = 2; /* format = 1; 11-bit codes */
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        s->unrestricted_mv = 1;
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        s->rtp_mode  = 0; /* don't allow GOB */
        avctx->delay = 0;
        s->low_delay = 1;
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        break;
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    case AV_CODEC_ID_RV10:
751
        s->out_format = FMT_H263;
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        avctx->delay  = 0;
        s->low_delay  = 1;
754
        break;
755
    case AV_CODEC_ID_RV20:
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        s->out_format      = FMT_H263;
        avctx->delay       = 0;
        s->low_delay       = 1;
        s->modified_quant  = 1;
        s->h263_aic        = 1;
        s->h263_plus       = 1;
        s->loop_filter     = 1;
        s->unrestricted_mv = 0;
764
        break;
765
    case AV_CODEC_ID_MPEG4:
766 767
        s->out_format      = FMT_H263;
        s->h263_pred       = 1;
768
        s->unrestricted_mv = 1;
769 770
        s->low_delay       = s->max_b_frames ? 0 : 1;
        avctx->delay       = s->low_delay ? 0 : (s->max_b_frames + 1);
771
        break;
772
    case AV_CODEC_ID_MSMPEG4V2:
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        s->out_format      = FMT_H263;
        s->h263_pred       = 1;
775
        s->unrestricted_mv = 1;
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        s->msmpeg4_version = 2;
        avctx->delay       = 0;
        s->low_delay       = 1;
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        break;
780
    case AV_CODEC_ID_MSMPEG4V3:
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        s->out_format        = FMT_H263;
        s->h263_pred         = 1;
        s->unrestricted_mv   = 1;
        s->msmpeg4_version   = 3;
        s->flipflop_rounding = 1;
        avctx->delay         = 0;
        s->low_delay         = 1;
788
        break;
789
    case AV_CODEC_ID_WMV1:
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        s->out_format        = FMT_H263;
        s->h263_pred         = 1;
        s->unrestricted_mv   = 1;
        s->msmpeg4_version   = 4;
        s->flipflop_rounding = 1;
        avctx->delay         = 0;
        s->low_delay         = 1;
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        break;
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    case AV_CODEC_ID_WMV2:
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        s->out_format        = FMT_H263;
        s->h263_pred         = 1;
        s->unrestricted_mv   = 1;
        s->msmpeg4_version   = 5;
        s->flipflop_rounding = 1;
        avctx->delay         = 0;
        s->low_delay         = 1;
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        break;
    default:
        return -1;
    }

811
    avctx->has_b_frames = !s->low_delay;
812 813 814

    s->encoding = 1;

815 816
    s->progressive_frame    =
    s->progressive_sequence = !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT |
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                                                CODEC_FLAG_INTERLACED_ME) ||
                                s->alternate_scan);
819

820
    /* init */
821
    if (ff_MPV_common_init(s) < 0)
822 823
        return -1;

824
    ff_dct_encode_init(s);
825

826 827
    if ((CONFIG_H263P_ENCODER || CONFIG_RV20_ENCODER) && s->modified_quant)
        s->chroma_qscale_table = ff_h263_chroma_qscale_table;
828

829
    s->quant_precision = 5;
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    ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
    ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);

834
    if (CONFIG_H261_ENCODER && s->out_format == FMT_H261)
835
        ff_h261_encode_init(s);
836
    if (CONFIG_H263_ENCODER && s->out_format == FMT_H263)
837
        ff_h263_encode_init(s);
838
    if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version)
839
        ff_msmpeg4_encode_init(s);
840
    if ((CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
841
        && s->out_format == FMT_MPEG1)
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        ff_mpeg1_encode_init(s);

    /* init q matrix */
845 846
    for (i = 0; i < 64; i++) {
        int j = s->dsp.idct_permutation[i];
847
        if (CONFIG_MPEG4_ENCODER && s->codec_id == AV_CODEC_ID_MPEG4 &&
848
            s->mpeg_quant) {
849 850
            s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
            s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
851
        } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
852 853
            s->intra_matrix[j] =
            s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
854 855
        } else {
            /* mpeg1/2 */
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            s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
            s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
        }
859
        if (s->avctx->intra_matrix)
860
            s->intra_matrix[j] = s->avctx->intra_matrix[i];
861
        if (s->avctx->inter_matrix)
862 863 864 865 866 867
            s->inter_matrix[j] = s->avctx->inter_matrix[i];
    }

    /* precompute matrix */
    /* for mjpeg, we do include qscale in the matrix */
    if (s->out_format != FMT_MJPEG) {
868
        ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
869 870
                          s->intra_matrix, s->intra_quant_bias, avctx->qmin,
                          31, 1);
871
        ff_convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
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                          s->inter_matrix, s->inter_quant_bias, avctx->qmin,
                          31, 0);
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    }

876
    if (ff_rate_control_init(s) < 0)
877 878 879 880 881
        return -1;

    return 0;
}

882
av_cold int ff_MPV_encode_end(AVCodecContext *avctx)
883 884 885 886 887
{
    MpegEncContext *s = avctx->priv_data;

    ff_rate_control_uninit(s);

888
    ff_MPV_common_end(s);
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    if ((CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER) &&
        s->out_format == FMT_MJPEG)
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        ff_mjpeg_encode_close(s);

    av_freep(&avctx->extradata);

    return 0;
}

898 899
static int get_sae(uint8_t *src, int ref, int stride)
{
900
    int x,y;
901
    int acc = 0;
902

903 904 905
    for (y = 0; y < 16; y++) {
        for (x = 0; x < 16; x++) {
            acc += FFABS(src[x + y * stride] - ref);
906 907 908 909 910 911
        }
    }

    return acc;
}

912 913 914
static int get_intra_count(MpegEncContext *s, uint8_t *src,
                           uint8_t *ref, int stride)
{
915
    int x, y, w, h;
916
    int acc = 0;
917

918 919
    w = s->width  & ~15;
    h = s->height & ~15;
920

921 922 923 924 925 926 927
    for (y = 0; y < h; y += 16) {
        for (x = 0; x < w; x += 16) {
            int offset = x + y * stride;
            int sad  = s->dsp.sad[0](NULL, src + offset, ref + offset, stride,
                                     16);
            int mean = (s->dsp.pix_sum(src + offset, stride) + 128) >> 8;
            int sae  = get_sae(src + offset, mean, stride);
928

929
            acc += sae + 500 < sad;
930 931 932 933 934 935
        }
    }
    return acc;
}


936
static int load_input_picture(MpegEncContext *s, const AVFrame *pic_arg)
937
{
938
    Picture *pic = NULL;
939
    int64_t pts;
940
    int i, display_picture_number = 0, ret;
941 942
    const int encoding_delay = s->max_b_frames ? s->max_b_frames :
                                                 (s->low_delay ? 0 : 1);
943 944 945 946
    int direct = 1;

    if (pic_arg) {
        pts = pic_arg->pts;
947
        display_picture_number = s->input_picture_number++;
948 949 950 951 952

        if (pts != AV_NOPTS_VALUE) {
            if (s->user_specified_pts != AV_NOPTS_VALUE) {
                int64_t last = s->user_specified_pts;

953
                if (pts <= last) {
954
                    av_log(s->avctx, AV_LOG_ERROR,
955 956 957
                           "Invalid pts (%"PRId64") <= last (%"PRId64")\n",
                           pts, last);
                    return AVERROR(EINVAL);
958
                }
959

960
                if (!s->low_delay && display_picture_number == 1)
961
                    s->dts_delta = pts - last;
962
            }
963 964 965 966 967 968 969 970 971
            s->user_specified_pts = pts;
        } else {
            if (s->user_specified_pts != AV_NOPTS_VALUE) {
                s->user_specified_pts =
                pts = s->user_specified_pts + 1;
                av_log(s->avctx, AV_LOG_INFO,
                       "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n",
                       pts);
            } else {
972
                pts = display_picture_number;
973 974 975 976
            }
        }
    }

977
    if (pic_arg) {
978
        if (!pic_arg->buf[0])
979 980 981 982 983 984 985 986 987
            direct = 0;
        if (pic_arg->linesize[0] != s->linesize)
            direct = 0;
        if (pic_arg->linesize[1] != s->uvlinesize)
            direct = 0;
        if (pic_arg->linesize[2] != s->uvlinesize)
            direct = 0;

        av_dlog(s->avctx, "%d %d %d %d\n", pic_arg->linesize[0],
988
                pic_arg->linesize[1], (int) s->linesize, (int) s->uvlinesize);
989 990 991 992 993 994

        if (direct) {
            i = ff_find_unused_picture(s, 1);
            if (i < 0)
                return i;

995
            pic = &s->picture[i];
996 997
            pic->reference = 3;

998 999 1000
            if ((ret = av_frame_ref(&pic->f, pic_arg)) < 0)
                return ret;
            if (ff_alloc_picture(s, pic, 1) < 0) {
1001 1002 1003 1004 1005 1006
                return -1;
            }
        } else {
            i = ff_find_unused_picture(s, 0);
            if (i < 0)
                return i;
1007

1008
            pic = &s->picture[i];
1009
            pic->reference = 3;
1010

1011
            if (ff_alloc_picture(s, pic, 0) < 0) {
1012 1013
                return -1;
            }
1014

1015 1016 1017
            if (pic->f.data[0] + INPLACE_OFFSET == pic_arg->data[0] &&
                pic->f.data[1] + INPLACE_OFFSET == pic_arg->data[1] &&
                pic->f.data[2] + INPLACE_OFFSET == pic_arg->data[2]) {
1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
                // empty
            } else {
                int h_chroma_shift, v_chroma_shift;
                av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
                                                 &h_chroma_shift,
                                                 &v_chroma_shift);

                for (i = 0; i < 3; i++) {
                    int src_stride = pic_arg->linesize[i];
                    int dst_stride = i ? s->uvlinesize : s->linesize;
                    int h_shift = i ? h_chroma_shift : 0;
                    int v_shift = i ? v_chroma_shift : 0;
                    int w = s->width  >> h_shift;
                    int h = s->height >> v_shift;
                    uint8_t *src = pic_arg->data[i];
1033
                    uint8_t *dst = pic->f.data[i];
1034

1035 1036 1037
                    if (s->codec_id == AV_CODEC_ID_AMV && !(s->avctx->flags & CODEC_FLAG_EMU_EDGE)) {
                        h = ((s->height + 15)/16*16) >> v_shift;
                    }
1038

1039 1040 1041 1042 1043 1044
                    if (!s->avctx->rc_buffer_size)
                        dst += INPLACE_OFFSET;

                    if (src_stride == dst_stride)
                        memcpy(dst, src, src_stride * h);
                    else {
1045 1046 1047 1048 1049
                        int h2 = h;
                        uint8_t *dst2 = dst;
                        while (h2--) {
                            memcpy(dst2, src, w);
                            dst2 += dst_stride;
1050 1051
                            src += src_stride;
                        }
1052
                    }
1053 1054 1055 1056 1057 1058 1059
                    if ((s->width & 15) || (s->height & 15)) {
                        s->dsp.draw_edges(dst, dst_stride,
                                          w, h,
                                          16>>h_shift,
                                          16>>v_shift,
                                          EDGE_BOTTOM);
                    }
1060 1061 1062
                }
            }
        }
1063 1064 1065 1066
        ret = av_frame_copy_props(&pic->f, pic_arg);
        if (ret < 0)
            return ret;

1067 1068
        pic->f.display_picture_number = display_picture_number;
        pic->f.pts = pts; // we set this here to avoid modifiying pic_arg
1069 1070 1071
    }

    /* shift buffer entries */
1072 1073
    for (i = 1; i < MAX_PICTURE_COUNT /*s->encoding_delay + 1*/; i++)
        s->input_picture[i - 1] = s->input_picture[i];
1074

1075
    s->input_picture[encoding_delay] = (Picture*) pic;
1076 1077 1078 1079

    return 0;
}

1080 1081
static int skip_check(MpegEncContext *s, Picture *p, Picture *ref)
{
1082
    int x, y, plane;
1083 1084
    int score = 0;
    int64_t score64 = 0;
1085

1086
    for (plane = 0; plane < 3; plane++) {
1087
        const int stride = p->f.linesize[plane];
1088 1089 1090
        const int bw = plane ? 1 : 2;
        for (y = 0; y < s->mb_height * bw; y++) {
            for (x = 0; x < s->mb_width * bw; x++) {
1091
                int off = p->shared ? 0 : 16;
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101
                uint8_t *dptr = p->f.data[plane] + 8 * (x + y * stride) + off;
                uint8_t *rptr = ref->f.data[plane] + 8 * (x + y * stride);
                int v   = s->dsp.frame_skip_cmp[1](s, dptr, rptr, stride, 8);

                switch (s->avctx->frame_skip_exp) {
                case 0: score    =  FFMAX(score, v);          break;
                case 1: score   += FFABS(v);                  break;
                case 2: score   += v * v;                     break;
                case 3: score64 += FFABS(v * v * (int64_t)v); break;
                case 4: score64 += v * v * (int64_t)(v * v);  break;
1102 1103 1104 1105 1106
                }
            }
        }
    }

1107 1108
    if (score)
        score64 = score;
1109

1110
    if (score64 < s->avctx->frame_skip_threshold)
1111
        return 1;
1112
    if (score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda) >> 8))
1113 1114 1115 1116
        return 1;
    return 0;
}

1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131
static int encode_frame(AVCodecContext *c, AVFrame *frame)
{
    AVPacket pkt = { 0 };
    int ret, got_output;

    av_init_packet(&pkt);
    ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
    if (ret < 0)
        return ret;

    ret = pkt.size;
    av_free_packet(&pkt);
    return ret;
}

1132 1133
static int estimate_best_b_count(MpegEncContext *s)
{
1134
    AVCodec *codec    = avcodec_find_encoder(s->avctx->codec_id);
1135
    AVCodecContext *c = avcodec_alloc_context3(NULL);
1136 1137
    AVFrame input[FF_MAX_B_FRAMES + 2];
    const int scale = s->avctx->brd_scale;
1138
    int i, j, out_size, p_lambda, b_lambda, lambda2;
1139 1140 1141
    int64_t best_rd  = INT64_MAX;
    int best_b_count = -1;

1142
    av_assert0(scale >= 0 && scale <= 3);
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162

    //emms_c();
    //s->next_picture_ptr->quality;
    p_lambda = s->last_lambda_for[AV_PICTURE_TYPE_P];
    //p_lambda * FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
    b_lambda = s->last_lambda_for[AV_PICTURE_TYPE_B];
    if (!b_lambda) // FIXME we should do this somewhere else
        b_lambda = p_lambda;
    lambda2  = (b_lambda * b_lambda + (1 << FF_LAMBDA_SHIFT) / 2) >>
               FF_LAMBDA_SHIFT;

    c->width        = s->width  >> scale;
    c->height       = s->height >> scale;
    c->flags        = CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR |
                      CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
    c->flags       |= s->avctx->flags & CODEC_FLAG_QPEL;
    c->mb_decision  = s->avctx->mb_decision;
    c->me_cmp       = s->avctx->me_cmp;
    c->mb_cmp       = s->avctx->mb_cmp;
    c->me_sub_cmp   = s->avctx->me_sub_cmp;
1163
    c->pix_fmt      = AV_PIX_FMT_YUV420P;
1164 1165
    c->time_base    = s->avctx->time_base;
    c->max_b_frames = s->max_b_frames;
1166

1167
    if (avcodec_open2(c, codec, NULL) < 0)
1168 1169
        return -1;

1170 1171 1172 1173 1174
    for (i = 0; i < s->max_b_frames + 2; i++) {
        int ysize = c->width * c->height;
        int csize = (c->width / 2) * (c->height / 2);
        Picture pre_input, *pre_input_ptr = i ? s->input_picture[i - 1] :
                                                s->next_picture_ptr;
1175 1176

        avcodec_get_frame_defaults(&input[i]);
1177 1178 1179 1180 1181 1182
        input[i].data[0]     = av_malloc(ysize + 2 * csize);
        input[i].data[1]     = input[i].data[0] + ysize;
        input[i].data[2]     = input[i].data[1] + csize;
        input[i].linesize[0] = c->width;
        input[i].linesize[1] =
        input[i].linesize[2] = c->width / 2;
1183

1184 1185
        if (pre_input_ptr && (!i || s->input_picture[i - 1])) {
            pre_input = *pre_input_ptr;
1186

1187
            if (!pre_input.shared && i) {
1188 1189 1190
                pre_input.f.data[0] += INPLACE_OFFSET;
                pre_input.f.data[1] += INPLACE_OFFSET;
                pre_input.f.data[2] += INPLACE_OFFSET;
1191 1192
            }

1193 1194 1195 1196 1197 1198 1199 1200 1201
            s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0],
                                 pre_input.f.data[0], pre_input.f.linesize[0],
                                 c->width,      c->height);
            s->dsp.shrink[scale](input[i].data[1], input[i].linesize[1],
                                 pre_input.f.data[1], pre_input.f.linesize[1],
                                 c->width >> 1, c->height >> 1);
            s->dsp.shrink[scale](input[i].data[2], input[i].linesize[2],
                                 pre_input.f.data[2], pre_input.f.linesize[2],
                                 c->width >> 1, c->height >> 1);
1202 1203 1204
        }
    }

1205 1206
    for (j = 0; j < s->max_b_frames + 1; j++) {
        int64_t rd = 0;
1207

1208
        if (!s->input_picture[j])
1209 1210
            break;

1211
        c->error[0] = c->error[1] = c->error[2] = 0;
1212

1213 1214
        input[0].pict_type = AV_PICTURE_TYPE_I;
        input[0].quality   = 1 * FF_QP2LAMBDA;
1215 1216 1217

        out_size = encode_frame(c, &input[0]);

1218
        //rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
1219

1220 1221
        for (i = 0; i < s->max_b_frames + 1; i++) {
            int is_p = i % (j + 1) == j || i == s->max_b_frames;
1222

1223 1224 1225
            input[i + 1].pict_type = is_p ?
                                     AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_B;
            input[i + 1].quality   = is_p ? p_lambda : b_lambda;
1226 1227 1228

            out_size = encode_frame(c, &input[i + 1]);

1229 1230 1231 1232
            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
        }

        /* get the delayed frames */
1233
        while (out_size) {
1234
            out_size = encode_frame(c, NULL);
1235 1236 1237 1238 1239
            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
        }

        rd += c->error[0] + c->error[1] + c->error[2];

1240 1241 1242
        if (rd < best_rd) {
            best_rd = rd;
            best_b_count = j;
1243 1244 1245 1246 1247 1248
        }
    }

    avcodec_close(c);
    av_freep(&c);

1249
    for (i = 0; i < s->max_b_frames + 2; i++) {
1250 1251 1252 1253 1254 1255
        av_freep(&input[i].data[0]);
    }

    return best_b_count;
}

1256 1257
static int select_input_picture(MpegEncContext *s)
{
1258
    int i, ret;
1259

1260 1261 1262
    for (i = 1; i < MAX_PICTURE_COUNT; i++)
        s->reordered_input_picture[i - 1] = s->reordered_input_picture[i];
    s->reordered_input_picture[MAX_PICTURE_COUNT - 1] = NULL;
1263 1264

    /* set next picture type & ordering */
1265 1266 1267 1268
    if (s->reordered_input_picture[0] == NULL && s->input_picture[0]) {
        if (/*s->picture_in_gop_number >= s->gop_size ||*/
            s->next_picture_ptr == NULL || s->intra_only) {
            s->reordered_input_picture[0] = s->input_picture[0];
1269
            s->reordered_input_picture[0]->f.pict_type = AV_PICTURE_TYPE_I;
1270 1271 1272
            s->reordered_input_picture[0]->f.coded_picture_number =
                s->coded_picture_number++;
        } else {
1273 1274
            int b_frames;

1275 1276 1277 1278
            if (s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor) {
                if (s->picture_in_gop_number < s->gop_size &&
                    skip_check(s, s->input_picture[0], s->next_picture_ptr)) {
                    // FIXME check that te gop check above is +-1 correct
1279
                    av_frame_unref(&s->input_picture[0]->f);
1280 1281 1282 1283 1284 1285 1286 1287

                    emms_c();
                    ff_vbv_update(s, 0);

                    goto no_output_pic;
                }
            }

1288 1289
            if (s->flags & CODEC_FLAG_PASS2) {
                for (i = 0; i < s->max_b_frames + 1; i++) {
1290
                    int pict_num = s->input_picture[0]->f.display_picture_number + i;
1291

1292
                    if (pict_num >= s->rc_context.num_entries)
1293
                        break;
1294 1295
                    if (!s->input_picture[i]) {
                        s->rc_context.entry[pict_num - 1].new_pict_type = AV_PICTURE_TYPE_P;
1296 1297 1298
                        break;
                    }

1299
                    s->input_picture[i]->f.pict_type =
1300 1301 1302 1303
                        s->rc_context.entry[pict_num].new_pict_type;
                }
            }

1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316
            if (s->avctx->b_frame_strategy == 0) {
                b_frames = s->max_b_frames;
                while (b_frames && !s->input_picture[b_frames])
                    b_frames--;
            } else if (s->avctx->b_frame_strategy == 1) {
                for (i = 1; i < s->max_b_frames + 1; i++) {
                    if (s->input_picture[i] &&
                        s->input_picture[i]->b_frame_score == 0) {
                        s->input_picture[i]->b_frame_score =
                            get_intra_count(s,
                                            s->input_picture[i    ]->f.data[0],
                                            s->input_picture[i - 1]->f.data[0],
                                            s->linesize) + 1;
1317 1318
                    }
                }
1319 1320 1321 1322 1323
                for (i = 0; i < s->max_b_frames + 1; i++) {
                    if (s->input_picture[i] == NULL ||
                        s->input_picture[i]->b_frame_score - 1 >
                            s->mb_num / s->avctx->b_sensitivity)
                        break;
1324 1325
                }

1326
                b_frames = FFMAX(0, i - 1);
1327 1328

                /* reset scores */
1329 1330
                for (i = 0; i < b_frames + 1; i++) {
                    s->input_picture[i]->b_frame_score = 0;
1331
                }
1332 1333 1334
            } else if (s->avctx->b_frame_strategy == 2) {
                b_frames = estimate_best_b_count(s);
            } else {
1335
                av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
1336
                b_frames = 0;
1337 1338 1339 1340
            }

            emms_c();

1341
            for (i = b_frames - 1; i >= 0; i--) {
1342
                int type = s->input_picture[i]->f.pict_type;
1343 1344
                if (type && type != AV_PICTURE_TYPE_B)
                    b_frames = i;
1345
            }
1346 1347 1348 1349
            if (s->input_picture[b_frames]->f.pict_type == AV_PICTURE_TYPE_B &&
                b_frames == s->max_b_frames) {
                av_log(s->avctx, AV_LOG_ERROR,
                       "warning, too many b frames in a row\n");
1350 1351
            }

1352
            if (s->picture_in_gop_number + b_frames >= s->gop_size) {
1353
                if ((s->mpv_flags & FF_MPV_FLAG_STRICT_GOP) &&
1354 1355 1356 1357 1358 1359 1360
                    s->gop_size > s->picture_in_gop_number) {
                    b_frames = s->gop_size - s->picture_in_gop_number - 1;
                } else {
                    if (s->flags & CODEC_FLAG_CLOSED_GOP)
                        b_frames = 0;
                    s->input_picture[b_frames]->f.pict_type = AV_PICTURE_TYPE_I;
                }
1361 1362
            }

1363 1364
            if ((s->flags & CODEC_FLAG_CLOSED_GOP) && b_frames &&
                s->input_picture[b_frames]->f.pict_type == AV_PICTURE_TYPE_I)
1365 1366
                b_frames--;

1367
            s->reordered_input_picture[0] = s->input_picture[b_frames];
1368 1369
            if (s->reordered_input_picture[0]->f.pict_type != AV_PICTURE_TYPE_I)
                s->reordered_input_picture[0]->f.pict_type = AV_PICTURE_TYPE_P;
1370 1371 1372
            s->reordered_input_picture[0]->f.coded_picture_number =
                s->coded_picture_number++;
            for (i = 0; i < b_frames; i++) {
1373
                s->reordered_input_picture[i + 1] = s->input_picture[i];
1374 1375 1376 1377
                s->reordered_input_picture[i + 1]->f.pict_type =
                    AV_PICTURE_TYPE_B;
                s->reordered_input_picture[i + 1]->f.coded_picture_number =
                    s->coded_picture_number++;
1378 1379 1380 1381
            }
        }
    }
no_output_pic:
1382
    if (s->reordered_input_picture[0]) {
1383
        s->reordered_input_picture[0]->reference =
1384 1385
           s->reordered_input_picture[0]->f.pict_type !=
               AV_PICTURE_TYPE_B ? 3 : 0;
1386

1387 1388 1389
        ff_mpeg_unref_picture(s, &s->new_picture);
        if ((ret = ff_mpeg_ref_picture(s, &s->new_picture, s->reordered_input_picture[0])))
            return ret;
1390

1391
        if (s->reordered_input_picture[0]->shared || s->avctx->rc_buffer_size) {
1392 1393
            // input is a shared pix, so we can't modifiy it -> alloc a new
            // one & ensure that the shared one is reuseable
1394

1395
            Picture *pic;
1396
            int i = ff_find_unused_picture(s, 0);
1397 1398
            if (i < 0)
                return i;
1399
            pic = &s->picture[i];
1400

1401
            pic->reference = s->reordered_input_picture[0]->reference;
1402
            if (ff_alloc_picture(s, pic, 0) < 0) {
1403 1404
                return -1;
            }
1405

1406 1407 1408
            ret = av_frame_copy_props(&pic->f, &s->reordered_input_picture[0]->f);
            if (ret < 0)
                return ret;
1409

1410 1411 1412 1413
            /* mark us unused / free shared pic */
            av_frame_unref(&s->reordered_input_picture[0]->f);
            s->reordered_input_picture[0]->shared = 0;

1414 1415
            s->current_picture_ptr = pic;
        } else {
1416
            // input is not a shared pix -> reuse buffer for current_pix
1417 1418
            s->current_picture_ptr = s->reordered_input_picture[0];
            for (i = 0; i < 4; i++) {
1419
                s->new_picture.f.data[i] += INPLACE_OFFSET;
1420 1421
            }
        }
1422 1423 1424 1425
        ff_mpeg_unref_picture(s, &s->current_picture);
        if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
                                       s->current_picture_ptr)) < 0)
            return ret;
1426

1427
        s->picture_number = s->new_picture.f.display_picture_number;
1428
    } else {
1429
        ff_mpeg_unref_picture(s, &s->new_picture);
1430
    }
1431
    return 0;
1432 1433
}

1434
int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
1435
                          AVFrame *pic_arg, int *got_packet)
1436 1437
{
    MpegEncContext *s = avctx->priv_data;
1438
    int i, stuffing_count, ret;
1439
    int context_count = s->slice_context_count;
1440 1441 1442

    s->picture_in_gop_number++;

1443
    if (load_input_picture(s, pic_arg) < 0)
1444 1445
        return -1;

1446
    if (select_input_picture(s) < 0) {
1447 1448
        return -1;
    }
1449 1450

    /* output? */
1451
    if (s->new_picture.f.data[0]) {
1452
        if ((ret = ff_alloc_packet2(avctx, pkt, s->mb_width*s->mb_height*(MAX_MB_BYTES+100)+10000)) < 0)
1453
            return ret;
1454 1455 1456 1457 1458 1459
        if (s->mb_info) {
            s->mb_info_ptr = av_packet_new_side_data(pkt,
                                 AV_PKT_DATA_H263_MB_INFO,
                                 s->mb_width*s->mb_height*12);
            s->prev_mb_info = s->last_mb_info = s->mb_info_size = 0;
        }
1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470

        for (i = 0; i < context_count; i++) {
            int start_y = s->thread_context[i]->start_mb_y;
            int   end_y = s->thread_context[i]->  end_mb_y;
            int h       = s->mb_height;
            uint8_t *start = pkt->data + (size_t)(((int64_t) pkt->size) * start_y / h);
            uint8_t *end   = pkt->data + (size_t)(((int64_t) pkt->size) *   end_y / h);

            init_put_bits(&s->thread_context[i]->pb, start, end - start);
        }

1471
        s->pict_type = s->new_picture.f.pict_type;
1472
        //emms_c();
1473 1474
        if (ff_MPV_frame_start(s, avctx) < 0)
            return -1;
1475 1476 1477 1478 1479 1480 1481 1482 1483 1484
vbv_retry:
        if (encode_picture(s, s->picture_number) < 0)
            return -1;

        avctx->header_bits = s->header_bits;
        avctx->mv_bits     = s->mv_bits;
        avctx->misc_bits   = s->misc_bits;
        avctx->i_tex_bits  = s->i_tex_bits;
        avctx->p_tex_bits  = s->p_tex_bits;
        avctx->i_count     = s->i_count;
1485 1486
        // FIXME f/b_count in avctx
        avctx->p_count     = s->mb_num - s->i_count - s->skip_count;
1487 1488
        avctx->skip_count  = s->skip_count;

1489
        ff_MPV_frame_end(s);
1490

1491
        if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
1492 1493
            ff_mjpeg_encode_picture_trailer(s);

1494 1495 1496
        if (avctx->rc_buffer_size) {
            RateControlContext *rcc = &s->rc_context;
            int max_size = rcc->buffer_index * avctx->rc_max_available_vbv_use;
1497

1498 1499 1500 1501 1502
            if (put_bits_count(&s->pb) > max_size &&
                s->lambda < s->avctx->lmax) {
                s->next_lambda = FFMAX(s->lambda + 1, s->lambda *
                                       (s->qscale + 1) / s->qscale);
                if (s->adaptive_quant) {
1503
                    int i;
1504 1505 1506 1507 1508
                    for (i = 0; i < s->mb_height * s->mb_stride; i++)
                        s->lambda_table[i] =
                            FFMAX(s->lambda_table[i] + 1,
                                  s->lambda_table[i] * (s->qscale + 1) /
                                  s->qscale);
1509
                }
1510 1511 1512 1513
                s->mb_skipped = 0;        // done in MPV_frame_start()
                // done in encode_picture() so we must undo it
                if (s->pict_type == AV_PICTURE_TYPE_P) {
                    if (s->flipflop_rounding          ||
1514 1515
                        s->codec_id == AV_CODEC_ID_H263P ||
                        s->codec_id == AV_CODEC_ID_MPEG4)
1516 1517
                        s->no_rounding ^= 1;
                }
1518 1519 1520
                if (s->pict_type != AV_PICTURE_TYPE_B) {
                    s->time_base       = s->last_time_base;
                    s->last_non_b_time = s->time - s->pp_time;
1521
                }
1522 1523
                for (i = 0; i < context_count; i++) {
                    PutBitContext *pb = &s->thread_context[i]->pb;
1524 1525 1526 1527 1528 1529 1530 1531
                    init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
                }
                goto vbv_retry;
            }

            assert(s->avctx->rc_max_rate);
        }

1532
        if (s->flags & CODEC_FLAG_PASS1)
1533 1534
            ff_write_pass1_stats(s);

1535 1536 1537
        for (i = 0; i < 4; i++) {
            s->current_picture_ptr->f.error[i] = s->current_picture.f.error[i];
            avctx->error[i] += s->current_picture_ptr->f.error[i];
1538 1539
        }

1540 1541 1542 1543
        if (s->flags & CODEC_FLAG_PASS1)
            assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits +
                   avctx->i_tex_bits + avctx->p_tex_bits ==
                       put_bits_count(&s->pb));
1544 1545 1546
        flush_put_bits(&s->pb);
        s->frame_bits  = put_bits_count(&s->pb);

1547
        stuffing_count = ff_vbv_update(s, s->frame_bits);
1548
        s->stuffing_bits = 8*stuffing_count;
1549 1550 1551
        if (stuffing_count) {
            if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) <
                    stuffing_count + 50) {
1552 1553 1554 1555
                av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
                return -1;
            }

1556
            switch (s->codec_id) {
1557 1558
            case AV_CODEC_ID_MPEG1VIDEO:
            case AV_CODEC_ID_MPEG2VIDEO:
1559
                while (stuffing_count--) {
1560 1561 1562
                    put_bits(&s->pb, 8, 0);
                }
            break;
1563
            case AV_CODEC_ID_MPEG4:
1564 1565 1566
                put_bits(&s->pb, 16, 0);
                put_bits(&s->pb, 16, 0x1C3);
                stuffing_count -= 4;
1567
                while (stuffing_count--) {
1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578
                    put_bits(&s->pb, 8, 0xFF);
                }
            break;
            default:
                av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
            }
            flush_put_bits(&s->pb);
            s->frame_bits  = put_bits_count(&s->pb);
        }

        /* update mpeg1/2 vbv_delay for CBR */
1579 1580 1581 1582 1583
        if (s->avctx->rc_max_rate                          &&
            s->avctx->rc_min_rate == s->avctx->rc_max_rate &&
            s->out_format == FMT_MPEG1                     &&
            90000LL * (avctx->rc_buffer_size - 1) <=
                s->avctx->rc_max_rate * 0xFFFFLL) {
1584
            int vbv_delay, min_delay;
1585 1586 1587 1588 1589
            double inbits  = s->avctx->rc_max_rate *
                             av_q2d(s->avctx->time_base);
            int    minbits = s->frame_bits - 8 *
                             (s->vbv_delay_ptr - s->pb.buf - 1);
            double bits    = s->rc_context.buffer_index + minbits - inbits;
1590

1591 1592 1593
            if (bits < 0)
                av_log(s->avctx, AV_LOG_ERROR,
                       "Internal error, negative bits\n");
1594

1595
            assert(s->repeat_first_field == 0);
1596

1597 1598 1599
            vbv_delay = bits * 90000 / s->avctx->rc_max_rate;
            min_delay = (minbits * 90000LL + s->avctx->rc_max_rate - 1) /
                        s->avctx->rc_max_rate;
1600

1601
            vbv_delay = FFMAX(vbv_delay, min_delay);
1602

1603
            av_assert0(vbv_delay < 0xFFFF);
1604 1605

            s->vbv_delay_ptr[0] &= 0xF8;
1606 1607
            s->vbv_delay_ptr[0] |= vbv_delay >> 13;
            s->vbv_delay_ptr[1]  = vbv_delay >> 5;
1608
            s->vbv_delay_ptr[2] &= 0x07;
1609 1610
            s->vbv_delay_ptr[2] |= vbv_delay << 3;
            avctx->vbv_delay     = vbv_delay * 300;
1611
        }
1612
        s->total_bits     += s->frame_bits;
1613
        avctx->frame_bits  = s->frame_bits;
1614 1615

        pkt->pts = s->current_picture.f.pts;
1616
        if (!s->low_delay && s->pict_type != AV_PICTURE_TYPE_B) {
1617 1618 1619 1620
            if (!s->current_picture.f.coded_picture_number)
                pkt->dts = pkt->pts - s->dts_delta;
            else
                pkt->dts = s->reordered_pts;
1621
            s->reordered_pts = pkt->pts;
1622 1623 1624 1625
        } else
            pkt->dts = pkt->pts;
        if (s->current_picture.f.key_frame)
            pkt->flags |= AV_PKT_FLAG_KEY;
1626 1627
        if (s->mb_info)
            av_packet_shrink_side_data(pkt, AV_PKT_DATA_H263_MB_INFO, s->mb_info_size);
1628 1629
    } else {
        s->frame_bits = 0;
1630
    }
1631 1632 1633 1634 1635 1636 1637

    /* release non-reference frames */
    for (i = 0; i < MAX_PICTURE_COUNT; i++) {
        if (!s->picture[i].reference)
            ff_mpeg_unref_picture(s, &s->picture[i]);
    }

1638
    assert((s->frame_bits & 7) == 0);
1639

1640 1641 1642
    pkt->size = s->frame_bits / 8;
    *got_packet = !!pkt->size;
    return 0;
1643 1644
}

1645 1646
static inline void dct_single_coeff_elimination(MpegEncContext *s,
                                                int n, int threshold)
1647
{
1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659
    static const char tab[64] = {
        3, 2, 2, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1,
        1, 1, 1, 1, 1, 1, 1, 1,
        0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0,
        0, 0, 0, 0, 0, 0, 0, 0
    };
    int score = 0;
    int run = 0;
1660
    int i;
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1661
    int16_t *block = s->block[n];
1662
    const int last_index = s->block_last_index[n];
1663 1664
    int skip_dc;

1665 1666 1667 1668 1669
    if (threshold < 0) {
        skip_dc = 0;
        threshold = -threshold;
    } else
        skip_dc = 1;
1670

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1671
    /* Are all we could set to zero already zero? */
1672 1673
    if (last_index <= skip_dc - 1)
        return;
1674

1675
    for (i = 0; i <= last_index; i++) {
1676 1677
        const int j = s->intra_scantable.permutated[i];
        const int level = FFABS(block[j]);
1678 1679 1680 1681 1682 1683
        if (level == 1) {
            if (skip_dc && i == 0)
                continue;
            score += tab[run];
            run = 0;
        } else if (level > 1) {
1684
            return;
1685
        } else {
1686 1687 1688
            run++;
        }
    }
1689 1690 1691
    if (score >= threshold)
        return;
    for (i = skip_dc; i <= last_index; i++) {
1692
        const int j = s->intra_scantable.permutated[i];
1693
        block[j] = 0;
1694
    }
1695 1696 1697 1698
    if (block[0])
        s->block_last_index[n] = 0;
    else
        s->block_last_index[n] = -1;
1699 1700
}

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1701
static inline void clip_coeffs(MpegEncContext *s, int16_t *block,
1702
                               int last_index)
1703 1704
{
    int i;
1705 1706 1707
    const int maxlevel = s->max_qcoeff;
    const int minlevel = s->min_qcoeff;
    int overflow = 0;
1708

1709 1710 1711 1712
    if (s->mb_intra) {
        i = 1; // skip clipping of intra dc
    } else
        i = 0;
1713

1714 1715
    for (; i <= last_index; i++) {
        const int j = s->intra_scantable.permutated[i];
1716 1717
        int level = block[j];

1718 1719
        if (level > maxlevel) {
            level = maxlevel;
1720
            overflow++;
1721 1722
        } else if (level < minlevel) {
            level = minlevel;
1723 1724 1725
            overflow++;
        }

1726
        block[j] = level;
1727 1728
    }

1729 1730 1731 1732
    if (overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
        av_log(s->avctx, AV_LOG_INFO,
               "warning, clipping %d dct coefficients to %d..%d\n",
               overflow, minlevel, maxlevel);
1733 1734
}

1735 1736
static void get_visual_weight(int16_t *weight, uint8_t *ptr, int stride)
{
1737
    int x, y;
1738 1739 1740
    // FIXME optimize
    for (y = 0; y < 8; y++) {
        for (x = 0; x < 8; x++) {
1741
            int x2, y2;
1742 1743 1744
            int sum = 0;
            int sqr = 0;
            int count = 0;
1745

1746 1747 1748
            for (y2 = FFMAX(y - 1, 0); y2 < FFMIN(8, y + 2); y2++) {
                for (x2= FFMAX(x - 1, 0); x2 < FFMIN(8, x + 2); x2++) {
                    int v = ptr[x2 + y2 * stride];
1749
                    sum += v;
1750
                    sqr += v * v;
1751 1752 1753
                    count++;
                }
            }
1754
            weight[x + 8 * y]= (36 * ff_sqrt(count * sqr - sum * sum)) / count;
1755 1756 1757 1758
        }
    }
}

1759 1760 1761
static av_always_inline void encode_mb_internal(MpegEncContext *s,
                                                int motion_x, int motion_y,
                                                int mb_block_height,
1762
                                                int mb_block_width,
1763
                                                int mb_block_count)
1764
{
1765
    int16_t weight[12][64];
1766
    int16_t orig[12][64];
1767 1768
    const int mb_x = s->mb_x;
    const int mb_y = s->mb_y;
1769
    int i;
1770
    int skip_dct[12];
1771
    int dct_offset = s->linesize * 8; // default for progressive frames
1772
    int uv_dct_offset = s->uvlinesize * 8;
1773
    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
1774
    ptrdiff_t wrap_y, wrap_c;
1775

1776 1777
    for (i = 0; i < mb_block_count; i++)
        skip_dct[i] = s->skipdct;
1778

1779 1780 1781
    if (s->adaptive_quant) {
        const int last_qp = s->qscale;
        const int mb_xy = mb_x + mb_y * s->mb_stride;
1782

1783
        s->lambda = s->lambda_table[mb_xy];
1784 1785
        update_qscale(s);

1786
        if (!(s->mpv_flags & FF_MPV_FLAG_QP_RD)) {
1787
            s->qscale = s->current_picture_ptr->qscale_table[mb_xy];
1788
            s->dquant = s->qscale - last_qp;
1789

1790 1791
            if (s->out_format == FMT_H263) {
                s->dquant = av_clip(s->dquant, -2, 2);
1792

1793
                if (s->codec_id == AV_CODEC_ID_MPEG4) {
1794 1795 1796 1797
                    if (!s->mb_intra) {
                        if (s->pict_type == AV_PICTURE_TYPE_B) {
                            if (s->dquant & 1 || s->mv_dir & MV_DIRECT)
                                s->dquant = 0;
1798
                        }
1799 1800
                        if (s->mv_type == MV_TYPE_8X8)
                            s->dquant = 0;
1801 1802 1803 1804 1805
                    }
                }
            }
        }
        ff_set_qscale(s, last_qp + s->dquant);
1806
    } else if (s->mpv_flags & FF_MPV_FLAG_QP_RD)
1807 1808 1809 1810
        ff_set_qscale(s, s->qscale + s->dquant);

    wrap_y = s->linesize;
    wrap_c = s->uvlinesize;
1811 1812 1813
    ptr_y  = s->new_picture.f.data[0] +
             (mb_y * 16 * wrap_y)              + mb_x * 16;
    ptr_cb = s->new_picture.f.data[1] +
1814
             (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
1815
    ptr_cr = s->new_picture.f.data[2] +
1816
             (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
1817

1818
    if((mb_x*16+16 > s->width || mb_y*16+16 > s->height) && s->codec_id != AV_CODEC_ID_AMV){
1819
        uint8_t *ebuf = s->edge_emu_buffer + 32;
1820 1821
        int cw = (s->width  + s->chroma_x_shift) >> s->chroma_x_shift;
        int ch = (s->height + s->chroma_y_shift) >> s->chroma_y_shift;
1822
        s->vdsp.emulated_edge_mc(ebuf, wrap_y, ptr_y, wrap_y, 16, 16, mb_x * 16,
1823
                                 mb_y * 16, s->width, s->height);
1824
        ptr_y = ebuf;
1825
        s->vdsp.emulated_edge_mc(ebuf + 18 * wrap_y, wrap_c, ptr_cb, wrap_c, mb_block_width,
1826 1827
                                 mb_block_height, mb_x * mb_block_width, mb_y * mb_block_height,
                                 cw, ch);
1828
        ptr_cb = ebuf + 18 * wrap_y;
1829
        s->vdsp.emulated_edge_mc(ebuf + 18 * wrap_y + 16, wrap_c, ptr_cr, wrap_c, mb_block_width,
1830 1831 1832
                                 mb_block_height, mb_x * mb_block_width, mb_y * mb_block_height,
                                 cw, ch);
        ptr_cr = ebuf + 18 * wrap_y + 16;
1833 1834 1835
    }

    if (s->mb_intra) {
1836
        if (s->flags & CODEC_FLAG_INTERLACED_DCT) {
1837 1838
            int progressive_score, interlaced_score;

1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853
            s->interlaced_dct = 0;
            progressive_score = s->dsp.ildct_cmp[4](s, ptr_y,
                                                    NULL, wrap_y, 8) +
                                s->dsp.ildct_cmp[4](s, ptr_y + wrap_y * 8,
                                                    NULL, wrap_y, 8) - 400;

            if (progressive_score > 0) {
                interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y,
                                                       NULL, wrap_y * 2, 8) +
                                   s->dsp.ildct_cmp[4](s, ptr_y + wrap_y,
                                                       NULL, wrap_y * 2, 8);
                if (progressive_score > interlaced_score) {
                    s->interlaced_dct = 1;

                    dct_offset = wrap_y;
1854
                    uv_dct_offset = wrap_c;
1855
                    wrap_y <<= 1;
1856 1857
                    if (s->chroma_format == CHROMA_422 ||
                        s->chroma_format == CHROMA_444)
1858
                        wrap_c <<= 1;
1859 1860 1861 1862
                }
            }
        }

1863 1864 1865 1866
        s->dsp.get_pixels(s->block[0], ptr_y                  , wrap_y);
        s->dsp.get_pixels(s->block[1], ptr_y              + 8 , wrap_y);
        s->dsp.get_pixels(s->block[2], ptr_y + dct_offset     , wrap_y);
        s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8 , wrap_y);
1867

1868 1869 1870 1871
        if (s->flags & CODEC_FLAG_GRAY) {
            skip_dct[4] = 1;
            skip_dct[5] = 1;
        } else {
1872 1873
            s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
            s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
1874 1875 1876 1877 1878 1879 1880 1881 1882 1883
            if (!s->chroma_y_shift && s->chroma_x_shift) { /* 422 */
                s->dsp.get_pixels(s->block[6], ptr_cb + uv_dct_offset, wrap_c);
                s->dsp.get_pixels(s->block[7], ptr_cr + uv_dct_offset, wrap_c);
            } else if (!s->chroma_y_shift && !s->chroma_x_shift) { /* 444 */
                s->dsp.get_pixels(s->block[6], ptr_cb + 8, wrap_c);
                s->dsp.get_pixels(s->block[7], ptr_cr + 8, wrap_c);
                s->dsp.get_pixels(s->block[8], ptr_cb + uv_dct_offset, wrap_c);
                s->dsp.get_pixels(s->block[9], ptr_cr + uv_dct_offset, wrap_c);
                s->dsp.get_pixels(s->block[10], ptr_cb + uv_dct_offset + 8, wrap_c);
                s->dsp.get_pixels(s->block[11], ptr_cr + uv_dct_offset + 8, wrap_c);
1884 1885
            }
        }
1886
    } else {
1887 1888 1889 1890 1891 1892 1893 1894
        op_pixels_func (*op_pix)[4];
        qpel_mc_func (*op_qpix)[16];
        uint8_t *dest_y, *dest_cb, *dest_cr;

        dest_y  = s->dest[0];
        dest_cb = s->dest[1];
        dest_cr = s->dest[2];

1895
        if ((!s->no_rounding) || s->pict_type == AV_PICTURE_TYPE_B) {
1896
            op_pix  = s->hdsp.put_pixels_tab;
1897 1898
            op_qpix = s->dsp.put_qpel_pixels_tab;
        } else {
1899
            op_pix  = s->hdsp.put_no_rnd_pixels_tab;
1900
            op_qpix = s->dsp.put_no_rnd_qpel_pixels_tab;
1901 1902 1903
        }

        if (s->mv_dir & MV_DIR_FORWARD) {
1904 1905 1906
            ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 0,
                          s->last_picture.f.data,
                          op_pix, op_qpix);
1907
            op_pix  = s->hdsp.avg_pixels_tab;
1908
            op_qpix = s->dsp.avg_qpel_pixels_tab;
1909 1910
        }
        if (s->mv_dir & MV_DIR_BACKWARD) {
1911 1912 1913
            ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 1,
                          s->next_picture.f.data,
                          op_pix, op_qpix);
1914 1915
        }

1916
        if (s->flags & CODEC_FLAG_INTERLACED_DCT) {
1917 1918
            int progressive_score, interlaced_score;

1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
            s->interlaced_dct = 0;
            progressive_score = s->dsp.ildct_cmp[0](s, dest_y,
                                                    ptr_y,              wrap_y,
                                                    8) +
                                s->dsp.ildct_cmp[0](s, dest_y + wrap_y * 8,
                                                    ptr_y + wrap_y * 8, wrap_y,
                                                    8) - 400;

            if (s->avctx->ildct_cmp == FF_CMP_VSSE)
                progressive_score -= 400;

            if (progressive_score > 0) {
                interlaced_score = s->dsp.ildct_cmp[0](s, dest_y,
                                                       ptr_y,
                                                       wrap_y * 2, 8) +
                                   s->dsp.ildct_cmp[0](s, dest_y + wrap_y,
                                                       ptr_y + wrap_y,
                                                       wrap_y * 2, 8);

                if (progressive_score > interlaced_score) {
                    s->interlaced_dct = 1;

                    dct_offset = wrap_y;
1942
                    uv_dct_offset = wrap_c;
1943
                    wrap_y <<= 1;
1944
                    if (s->chroma_format == CHROMA_422)
1945
                        wrap_c <<= 1;
1946 1947 1948 1949
                }
            }
        }

1950 1951 1952 1953 1954 1955
        s->dsp.diff_pixels(s->block[0], ptr_y, dest_y, wrap_y);
        s->dsp.diff_pixels(s->block[1], ptr_y + 8, dest_y + 8, wrap_y);
        s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset,
                           dest_y + dct_offset, wrap_y);
        s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8,
                           dest_y + dct_offset + 8, wrap_y);
1956

1957 1958 1959 1960
        if (s->flags & CODEC_FLAG_GRAY) {
            skip_dct[4] = 1;
            skip_dct[5] = 1;
        } else {
1961 1962
            s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
            s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
1963
            if (!s->chroma_y_shift) { /* 422 */
1964 1965 1966 1967
                s->dsp.diff_pixels(s->block[6], ptr_cb + uv_dct_offset,
                                   dest_cb + uv_dct_offset, wrap_c);
                s->dsp.diff_pixels(s->block[7], ptr_cr + uv_dct_offset,
                                   dest_cr + uv_dct_offset, wrap_c);
1968 1969 1970
            }
        }
        /* pre quantization */
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993
        if (s->current_picture.mc_mb_var[s->mb_stride * mb_y + mb_x] <
                2 * s->qscale * s->qscale) {
            // FIXME optimize
            if (s->dsp.sad[1](NULL, ptr_y , dest_y,
                              wrap_y, 8) < 20 * s->qscale)
                skip_dct[0] = 1;
            if (s->dsp.sad[1](NULL, ptr_y + 8,
                              dest_y + 8, wrap_y, 8) < 20 * s->qscale)
                skip_dct[1] = 1;
            if (s->dsp.sad[1](NULL, ptr_y + dct_offset,
                              dest_y + dct_offset, wrap_y, 8) < 20 * s->qscale)
                skip_dct[2] = 1;
            if (s->dsp.sad[1](NULL, ptr_y + dct_offset + 8,
                              dest_y + dct_offset + 8,
                              wrap_y, 8) < 20 * s->qscale)
                skip_dct[3] = 1;
            if (s->dsp.sad[1](NULL, ptr_cb, dest_cb,
                              wrap_c, 8) < 20 * s->qscale)
                skip_dct[4] = 1;
            if (s->dsp.sad[1](NULL, ptr_cr, dest_cr,
                              wrap_c, 8) < 20 * s->qscale)
                skip_dct[5] = 1;
            if (!s->chroma_y_shift) { /* 422 */
1994 1995
                if (s->dsp.sad[1](NULL, ptr_cb + uv_dct_offset,
                                  dest_cb + uv_dct_offset,
1996 1997
                                  wrap_c, 8) < 20 * s->qscale)
                    skip_dct[6] = 1;
1998 1999
                if (s->dsp.sad[1](NULL, ptr_cr + uv_dct_offset,
                                  dest_cr + uv_dct_offset,
2000 2001
                                  wrap_c, 8) < 20 * s->qscale)
                    skip_dct[7] = 1;
2002 2003 2004 2005
            }
        }
    }

2006
    if (s->quantizer_noise_shaping) {
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
        if (!skip_dct[0])
            get_visual_weight(weight[0], ptr_y                 , wrap_y);
        if (!skip_dct[1])
            get_visual_weight(weight[1], ptr_y              + 8, wrap_y);
        if (!skip_dct[2])
            get_visual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
        if (!skip_dct[3])
            get_visual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
        if (!skip_dct[4])
            get_visual_weight(weight[4], ptr_cb                , wrap_c);
        if (!skip_dct[5])
            get_visual_weight(weight[5], ptr_cr                , wrap_c);
        if (!s->chroma_y_shift) { /* 422 */
            if (!skip_dct[6])
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                get_visual_weight(weight[6], ptr_cb + uv_dct_offset,
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                                  wrap_c);
            if (!skip_dct[7])
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                get_visual_weight(weight[7], ptr_cr + uv_dct_offset,
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                                  wrap_c);
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        }
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2027
        memcpy(orig[0], s->block[0], sizeof(int16_t) * 64 * mb_block_count);
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    }

    /* DCT & quantize */
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    av_assert2(s->out_format != FMT_MJPEG || s->qscale == 8);
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    {
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        for (i = 0; i < mb_block_count; i++) {
            if (!skip_dct[i]) {
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                int overflow;
                s->block_last_index[i] = s->dct_quantize(s, s->block[i], i, s->qscale, &overflow);
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                // FIXME we could decide to change to quantizer instead of
                // clipping
                // JS: I don't think that would be a good idea it could lower
                //     quality instead of improve it. Just INTRADC clipping
                //     deserves changes in quantizer
                if (overflow)
                    clip_coeffs(s, s->block[i], s->block_last_index[i]);
            } else
                s->block_last_index[i] = -1;
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        }
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        if (s->quantizer_noise_shaping) {
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            for (i = 0; i < mb_block_count; i++) {
                if (!skip_dct[i]) {
                    s->block_last_index[i] =
                        dct_quantize_refine(s, s->block[i], weight[i],
                                            orig[i], i, s->qscale);
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                }
            }
        }

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        if (s->luma_elim_threshold && !s->mb_intra)
            for (i = 0; i < 4; i++)
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                dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
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        if (s->chroma_elim_threshold && !s->mb_intra)
            for (i = 4; i < mb_block_count; i++)
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                dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);

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        if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) {
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            for (i = 0; i < mb_block_count; i++) {
                if (s->block_last_index[i] == -1)
                    s->coded_score[i] = INT_MAX / 256;
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            }
        }
    }

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    if ((s->flags & CODEC_FLAG_GRAY) && s->mb_intra) {
        s->block_last_index[4] =
        s->block_last_index[5] = 0;
        s->block[4][0] =
        s->block[5][0] = (1024 + s->c_dc_scale / 2) / s->c_dc_scale;
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        if (!s->chroma_y_shift) { /* 422 / 444 */
            for (i=6; i<12; i++) {
                s->block_last_index[i] = 0;
                s->block[i][0] = s->block[4][0];
            }
        }
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    }

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    // non c quantize code returns incorrect block_last_index FIXME
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    if (s->alternate_scan && s->dct_quantize != ff_dct_quantize_c) {
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        for (i = 0; i < mb_block_count; i++) {
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            int j;
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            if (s->block_last_index[i] > 0) {
                for (j = 63; j > 0; j--) {
                    if (s->block[i][s->intra_scantable.permutated[j]])
                        break;
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                }
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                s->block_last_index[i] = j;
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            }
        }
    }

    /* huffman encode */
    switch(s->codec_id){ //FIXME funct ptr could be slightly faster
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    case AV_CODEC_ID_MPEG1VIDEO:
    case AV_CODEC_ID_MPEG2VIDEO:
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        if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
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            ff_mpeg1_encode_mb(s, s->block, motion_x, motion_y);
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        break;
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    case AV_CODEC_ID_MPEG4:
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        if (CONFIG_MPEG4_ENCODER)
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            ff_mpeg4_encode_mb(s, s->block, motion_x, motion_y);
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        break;
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    case AV_CODEC_ID_MSMPEG4V2:
    case AV_CODEC_ID_MSMPEG4V3:
    case AV_CODEC_ID_WMV1:
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        if (CONFIG_MSMPEG4_ENCODER)
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            ff_msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
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        break;
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    case AV_CODEC_ID_WMV2:
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        if (CONFIG_WMV2_ENCODER)
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            ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
        break;
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    case AV_CODEC_ID_H261:
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        if (CONFIG_H261_ENCODER)
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            ff_h261_encode_mb(s, s->block, motion_x, motion_y);
        break;
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    case AV_CODEC_ID_H263:
    case AV_CODEC_ID_H263P:
    case AV_CODEC_ID_FLV1:
    case AV_CODEC_ID_RV10:
    case AV_CODEC_ID_RV20:
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        if (CONFIG_H263_ENCODER)
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            ff_h263_encode_mb(s, s->block, motion_x, motion_y);
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        break;
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    case AV_CODEC_ID_MJPEG:
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    case AV_CODEC_ID_AMV:
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        if (CONFIG_MJPEG_ENCODER)
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            ff_mjpeg_encode_mb(s, s->block);
        break;
    default:
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        av_assert1(0);
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    }
}

static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
{
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    if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 8, 6);
    else if (s->chroma_format == CHROMA_422) encode_mb_internal(s, motion_x, motion_y, 16, 8, 8);
    else encode_mb_internal(s, motion_x, motion_y, 16, 16, 12);
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}

static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
    int i;

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    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
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    /* mpeg1 */
    d->mb_skip_run= s->mb_skip_run;
    for(i=0; i<3; i++)
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        d->last_dc[i] = s->last_dc[i];
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    /* statistics */
    d->mv_bits= s->mv_bits;
    d->i_tex_bits= s->i_tex_bits;
    d->p_tex_bits= s->p_tex_bits;
    d->i_count= s->i_count;
    d->f_count= s->f_count;
    d->b_count= s->b_count;
    d->skip_count= s->skip_count;
    d->misc_bits= s->misc_bits;
    d->last_bits= 0;

    d->mb_skipped= 0;
    d->qscale= s->qscale;
    d->dquant= s->dquant;
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    d->esc3_level_length= s->esc3_level_length;
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}

static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
    int i;

    memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
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    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
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    /* mpeg1 */
    d->mb_skip_run= s->mb_skip_run;
    for(i=0; i<3; i++)
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        d->last_dc[i] = s->last_dc[i];
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    /* statistics */
    d->mv_bits= s->mv_bits;
    d->i_tex_bits= s->i_tex_bits;
    d->p_tex_bits= s->p_tex_bits;
    d->i_count= s->i_count;
    d->f_count= s->f_count;
    d->b_count= s->b_count;
    d->skip_count= s->skip_count;
    d->misc_bits= s->misc_bits;

    d->mb_intra= s->mb_intra;
    d->mb_skipped= s->mb_skipped;
    d->mv_type= s->mv_type;
    d->mv_dir= s->mv_dir;
    d->pb= s->pb;
    if(s->data_partitioning){
        d->pb2= s->pb2;
        d->tex_pb= s->tex_pb;
    }
    d->block= s->block;
    for(i=0; i<8; i++)
        d->block_last_index[i]= s->block_last_index[i];
    d->interlaced_dct= s->interlaced_dct;
    d->qscale= s->qscale;
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    d->esc3_level_length= s->esc3_level_length;
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}

static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
                           PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
                           int *dmin, int *next_block, int motion_x, int motion_y)
{
    int score;
    uint8_t *dest_backup[3];

    copy_context_before_encode(s, backup, type);

    s->block= s->blocks[*next_block];
    s->pb= pb[*next_block];
    if(s->data_partitioning){
        s->pb2   = pb2   [*next_block];
        s->tex_pb= tex_pb[*next_block];
    }

    if(*next_block){
        memcpy(dest_backup, s->dest, sizeof(s->dest));
        s->dest[0] = s->rd_scratchpad;
        s->dest[1] = s->rd_scratchpad + 16*s->linesize;
        s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
        assert(s->linesize >= 32); //FIXME
    }

    encode_mb(s, motion_x, motion_y);

    score= put_bits_count(&s->pb);
    if(s->data_partitioning){
        score+= put_bits_count(&s->pb2);
        score+= put_bits_count(&s->tex_pb);
    }

    if(s->avctx->mb_decision == FF_MB_DECISION_RD){
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        ff_MPV_decode_mb(s, s->block);
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        score *= s->lambda2;
        score += sse_mb(s) << FF_LAMBDA_SHIFT;
    }

    if(*next_block){
        memcpy(s->dest, dest_backup, sizeof(s->dest));
    }

    if(score<*dmin){
        *dmin= score;
        *next_block^=1;

        copy_context_after_encode(best, s, type);
    }
}

static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
    uint32_t *sq = ff_squareTbl + 256;
    int acc=0;
    int x,y;

    if(w==16 && h==16)
        return s->dsp.sse[0](NULL, src1, src2, stride, 16);
    else if(w==8 && h==8)
        return s->dsp.sse[1](NULL, src1, src2, stride, 8);

    for(y=0; y<h; y++){
        for(x=0; x<w; x++){
            acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
        }
    }

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    av_assert2(acc>=0);
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    return acc;
}

static int sse_mb(MpegEncContext *s){
    int w= 16;
    int h= 16;

    if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
    if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;

    if(w==16 && h==16)
      if(s->avctx->mb_cmp == FF_CMP_NSSE){
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        return  s->dsp.nsse[0](s, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
               +s->dsp.nsse[1](s, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
               +s->dsp.nsse[1](s, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
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      }else{
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        return  s->dsp.sse[0](NULL, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
               +s->dsp.sse[1](NULL, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
               +s->dsp.sse[1](NULL, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
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      }
    else
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        return  sse(s, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], w, h, s->linesize)
               +sse(s, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], w>>1, h>>1, s->uvlinesize)
               +sse(s, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], w>>1, h>>1, s->uvlinesize);
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}

static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
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    MpegEncContext *s= *(void**)arg;
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    s->me.pre_pass=1;
    s->me.dia_size= s->avctx->pre_dia_size;
    s->first_slice_line=1;
    for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
        for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
            ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
        }
        s->first_slice_line=0;
    }

    s->me.pre_pass=0;

    return 0;
}

static int estimate_motion_thread(AVCodecContext *c, void *arg){
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    MpegEncContext *s= *(void**)arg;
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    ff_check_alignment();

    s->me.dia_size= s->avctx->dia_size;
    s->first_slice_line=1;
    for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
        s->mb_x=0; //for block init below
        ff_init_block_index(s);
        for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
            s->block_index[0]+=2;
            s->block_index[1]+=2;
            s->block_index[2]+=2;
            s->block_index[3]+=2;

            /* compute motion vector & mb_type and store in context */
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            if(s->pict_type==AV_PICTURE_TYPE_B)
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                ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
            else
                ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
        }
        s->first_slice_line=0;
    }
    return 0;
}

static int mb_var_thread(AVCodecContext *c, void *arg){
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    MpegEncContext *s= *(void**)arg;
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    int mb_x, mb_y;

    ff_check_alignment();

    for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
            int xx = mb_x * 16;
            int yy = mb_y * 16;
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            uint8_t *pix = s->new_picture.f.data[0] + (yy * s->linesize) + xx;
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            int varc;
            int sum = s->dsp.pix_sum(pix, s->linesize);

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            varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)sum*sum)>>8) + 500 + 128)>>8;
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            s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
            s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
            s->me.mb_var_sum_temp    += varc;
        }
    }
    return 0;
}

static void write_slice_end(MpegEncContext *s){
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    if(CONFIG_MPEG4_ENCODER && s->codec_id==AV_CODEC_ID_MPEG4){
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        if(s->partitioned_frame){
            ff_mpeg4_merge_partitions(s);
        }

        ff_mpeg4_stuffing(&s->pb);
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    }else if(CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
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        ff_mjpeg_encode_stuffing(s);
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    }

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    avpriv_align_put_bits(&s->pb);
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    flush_put_bits(&s->pb);

    if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
        s->misc_bits+= get_bits_diff(s);
}

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static void write_mb_info(MpegEncContext *s)
{
    uint8_t *ptr = s->mb_info_ptr + s->mb_info_size - 12;
    int offset = put_bits_count(&s->pb);
    int mba  = s->mb_x + s->mb_width * (s->mb_y % s->gob_index);
    int gobn = s->mb_y / s->gob_index;
    int pred_x, pred_y;
    if (CONFIG_H263_ENCODER)
        ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
    bytestream_put_le32(&ptr, offset);
    bytestream_put_byte(&ptr, s->qscale);
    bytestream_put_byte(&ptr, gobn);
    bytestream_put_le16(&ptr, mba);
    bytestream_put_byte(&ptr, pred_x); /* hmv1 */
    bytestream_put_byte(&ptr, pred_y); /* vmv1 */
    /* 4MV not implemented */
    bytestream_put_byte(&ptr, 0); /* hmv2 */
    bytestream_put_byte(&ptr, 0); /* vmv2 */
}

static void update_mb_info(MpegEncContext *s, int startcode)
{
    if (!s->mb_info)
        return;
    if (put_bits_count(&s->pb) - s->prev_mb_info*8 >= s->mb_info*8) {
        s->mb_info_size += 12;
        s->prev_mb_info = s->last_mb_info;
    }
    if (startcode) {
        s->prev_mb_info = put_bits_count(&s->pb)/8;
        /* This might have incremented mb_info_size above, and we return without
         * actually writing any info into that slot yet. But in that case,
         * this will be called again at the start of the after writing the
         * start code, actually writing the mb info. */
        return;
    }

    s->last_mb_info = put_bits_count(&s->pb)/8;
    if (!s->mb_info_size)
        s->mb_info_size += 12;
    write_mb_info(s);
}

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static int encode_thread(AVCodecContext *c, void *arg){
2443
    MpegEncContext *s= *(void**)arg;
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    int mb_x, mb_y, pdif = 0;
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2445
    int chr_h= 16>>s->chroma_y_shift;
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    int i, j;
    MpegEncContext best_s, backup_s;
    uint8_t bit_buf[2][MAX_MB_BYTES];
    uint8_t bit_buf2[2][MAX_MB_BYTES];
    uint8_t bit_buf_tex[2][MAX_MB_BYTES];
    PutBitContext pb[2], pb2[2], tex_pb[2];

    ff_check_alignment();

    for(i=0; i<2; i++){
        init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
        init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
        init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
    }

    s->last_bits= put_bits_count(&s->pb);
    s->mv_bits=0;
    s->misc_bits=0;
    s->i_tex_bits=0;
    s->p_tex_bits=0;
    s->i_count=0;
    s->f_count=0;
    s->b_count=0;
    s->skip_count=0;

    for(i=0; i<3; i++){
        /* init last dc values */
        /* note: quant matrix value (8) is implied here */
        s->last_dc[i] = 128 << s->intra_dc_precision;

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        s->current_picture.f.error[i] = 0;
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    }
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    if(s->codec_id==AV_CODEC_ID_AMV){
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        s->last_dc[0] = 128*8/13;
        s->last_dc[1] = 128*8/14;
        s->last_dc[2] = 128*8/14;
    }
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    s->mb_skip_run = 0;
    memset(s->last_mv, 0, sizeof(s->last_mv));

    s->last_mv_dir = 0;

    switch(s->codec_id){
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    case AV_CODEC_ID_H263:
    case AV_CODEC_ID_H263P:
    case AV_CODEC_ID_FLV1:
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        if (CONFIG_H263_ENCODER)
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2493
            s->gob_index = ff_h263_get_gob_height(s);
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        break;
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    case AV_CODEC_ID_MPEG4:
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        if(CONFIG_MPEG4_ENCODER && s->partitioned_frame)
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            ff_mpeg4_init_partitions(s);
        break;
    }

    s->resync_mb_x=0;
    s->resync_mb_y=0;
    s->first_slice_line = 1;
    s->ptr_lastgob = s->pb.buf;
    for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
        s->mb_x=0;
        s->mb_y= mb_y;

        ff_set_qscale(s, s->qscale);
        ff_init_block_index(s);

        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
            int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
            int mb_type= s->mb_type[xy];
//            int d;
            int dmin= INT_MAX;
            int dir;

            if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
                av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
                return -1;
            }
            if(s->data_partitioning){
                if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
                   || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
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                    av_log(s->avctx, AV_LOG_ERROR, "encoded partitioned frame too large\n");
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                    return -1;
                }
            }

            s->mb_x = mb_x;
            s->mb_y = mb_y;  // moved into loop, can get changed by H.261
            ff_update_block_index(s);

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            if(CONFIG_H261_ENCODER && s->codec_id == AV_CODEC_ID_H261){
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                ff_h261_reorder_mb_index(s);
                xy= s->mb_y*s->mb_stride + s->mb_x;
                mb_type= s->mb_type[xy];
            }

            /* write gob / video packet header  */
            if(s->rtp_mode){
                int current_packet_size, is_gob_start;

                current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);

                is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;

                if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;

                switch(s->codec_id){
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                case AV_CODEC_ID_H263:
                case AV_CODEC_ID_H263P:
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                    if(!s->h263_slice_structured)
                        if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
                    break;
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                case AV_CODEC_ID_MPEG2VIDEO:
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                    if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
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                case AV_CODEC_ID_MPEG1VIDEO:
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                    if(s->mb_skip_run) is_gob_start=0;
                    break;
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                case AV_CODEC_ID_MJPEG:
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                    if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
                    break;
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                }

                if(is_gob_start){
                    if(s->start_mb_y != mb_y || mb_x!=0){
                        write_slice_end(s);
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                        if(CONFIG_MPEG4_ENCODER && s->codec_id==AV_CODEC_ID_MPEG4 && s->partitioned_frame){
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                            ff_mpeg4_init_partitions(s);
                        }
                    }

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                    av_assert2((put_bits_count(&s->pb)&7) == 0);
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                    current_packet_size= put_bits_ptr(&s->pb) - s->ptr_lastgob;
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                    if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
                        int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
                        int d= 100 / s->avctx->error_rate;
                        if(r % d == 0){
                            current_packet_size=0;
                            s->pb.buf_ptr= s->ptr_lastgob;
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                            assert(put_bits_ptr(&s->pb) == s->ptr_lastgob);
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                        }
                    }

                    if (s->avctx->rtp_callback){
                        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
                        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
                    }
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                    update_mb_info(s, 1);
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                    switch(s->codec_id){
2595
                    case AV_CODEC_ID_MPEG4:
2596
                        if (CONFIG_MPEG4_ENCODER) {
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                            ff_mpeg4_encode_video_packet_header(s);
                            ff_mpeg4_clean_buffers(s);
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                        }
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                    break;
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                    case AV_CODEC_ID_MPEG1VIDEO:
                    case AV_CODEC_ID_MPEG2VIDEO:
2603
                        if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER) {
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                            ff_mpeg1_encode_slice_header(s);
                            ff_mpeg1_clean_buffers(s);
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                        }
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                    break;
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                    case AV_CODEC_ID_H263:
                    case AV_CODEC_ID_H263P:
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                        if (CONFIG_H263_ENCODER)
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                            ff_h263_encode_gob_header(s, mb_y);
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                    break;
                    }

                    if(s->flags&CODEC_FLAG_PASS1){
                        int bits= put_bits_count(&s->pb);
                        s->misc_bits+= bits - s->last_bits;
                        s->last_bits= bits;
                    }

                    s->ptr_lastgob += current_packet_size;
                    s->first_slice_line=1;
                    s->resync_mb_x=mb_x;
                    s->resync_mb_y=mb_y;
                }
            }

            if(  (s->resync_mb_x   == s->mb_x)
               && s->resync_mb_y+1 == s->mb_y){
                s->first_slice_line=0;
            }

            s->mb_skipped=0;
            s->dquant=0; //only for QP_RD

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            update_mb_info(s, 0);

2638
            if (mb_type & (mb_type-1) || (s->mpv_flags & FF_MPV_FLAG_QP_RD)) { // more than 1 MB type possible or FF_MPV_FLAG_QP_RD
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                int next_block=0;
                int pb_bits_count, pb2_bits_count, tex_pb_bits_count;

                copy_context_before_encode(&backup_s, s, -1);
                backup_s.pb= s->pb;
                best_s.data_partitioning= s->data_partitioning;
                best_s.partitioned_frame= s->partitioned_frame;
                if(s->data_partitioning){
                    backup_s.pb2= s->pb2;
                    backup_s.tex_pb= s->tex_pb;
                }

                if(mb_type&CANDIDATE_MB_TYPE_INTER){
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_16X16;
                    s->mb_intra= 0;
                    s->mv[0][0][0] = s->p_mv_table[xy][0];
                    s->mv[0][0][1] = s->p_mv_table[xy][1];
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                }
                if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(i=0; i<2; i++){
                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
                    }
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                }
                if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_16X16;
                    s->mb_intra= 0;
                    s->mv[0][0][0] = 0;
                    s->mv[0][0][1] = 0;
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                }
                if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_8X8;
                    s->mb_intra= 0;
                    for(i=0; i<4; i++){
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                        s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
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                    }
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                }
                if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_16X16;
                    s->mb_intra= 0;
                    s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
                    s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
                }
                if(mb_type&CANDIDATE_MB_TYPE_BACKWARD){
                    s->mv_dir = MV_DIR_BACKWARD;
                    s->mv_type = MV_TYPE_16X16;
                    s->mb_intra= 0;
                    s->mv[1][0][0] = s->b_back_mv_table[xy][0];
                    s->mv[1][0][1] = s->b_back_mv_table[xy][1];
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
                                 &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
                }
                if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
                    s->mv_type = MV_TYPE_16X16;
                    s->mb_intra= 0;
                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
                    s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
                    s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
                    s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                }
                if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(i=0; i<2; i++){
                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
                    }
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                }
                if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
                    s->mv_dir = MV_DIR_BACKWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(i=0; i<2; i++){
                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
                    }
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                }
                if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(dir=0; dir<2; dir++){
                        for(i=0; i<2; i++){
                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
                        }
                    }
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                }
                if(mb_type&CANDIDATE_MB_TYPE_INTRA){
                    s->mv_dir = 0;
                    s->mv_type = MV_TYPE_16X16;
                    s->mb_intra= 1;
                    s->mv[0][0][0] = 0;
                    s->mv[0][0][1] = 0;
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                    if(s->h263_pred || s->h263_aic){
                        if(best_s.mb_intra)
                            s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
                        else
                            ff_clean_intra_table_entries(s); //old mode?
                    }
                }

2775
                if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) && dmin < INT_MAX) {
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                    if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
                        const int last_qp= backup_s.qscale;
                        int qpi, qp, dc[6];
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2779
                        int16_t ac[6][16];
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                        const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
                        static const int dquant_tab[4]={-1,1,-2,2};
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                        int storecoefs = s->mb_intra && s->dc_val[0];
2783

2784
                        av_assert2(backup_s.dquant == 0);
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                        //FIXME intra
                        s->mv_dir= best_s.mv_dir;
                        s->mv_type = MV_TYPE_16X16;
                        s->mb_intra= best_s.mb_intra;
                        s->mv[0][0][0] = best_s.mv[0][0][0];
                        s->mv[0][0][1] = best_s.mv[0][0][1];
                        s->mv[1][0][0] = best_s.mv[1][0][0];
                        s->mv[1][0][1] = best_s.mv[1][0][1];

2795
                        qpi = s->pict_type == AV_PICTURE_TYPE_B ? 2 : 0;
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                        for(; qpi<4; qpi++){
                            int dquant= dquant_tab[qpi];
                            qp= last_qp + dquant;
                            if(qp < s->avctx->qmin || qp > s->avctx->qmax)
                                continue;
                            backup_s.dquant= dquant;
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                            if(storecoefs){
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                                for(i=0; i<6; i++){
                                    dc[i]= s->dc_val[0][ s->block_index[i] ];
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                                    memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(int16_t)*16);
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                                }
                            }

                            encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
                                         &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
                            if(best_s.qscale != qp){
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                                if(storecoefs){
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                                    for(i=0; i<6; i++){
                                        s->dc_val[0][ s->block_index[i] ]= dc[i];
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                                        memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(int16_t)*16);
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                                    }
                                }
                            }
                        }
                    }
                }
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                if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT){
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                    int mx= s->b_direct_mv_table[xy][0];
                    int my= s->b_direct_mv_table[xy][1];

                    backup_s.dquant = 0;
                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
                    s->mb_intra= 0;
                    ff_mpeg4_set_direct_mv(s, mx, my);
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
                                 &dmin, &next_block, mx, my);
                }
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                if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT0){
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                    backup_s.dquant = 0;
                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
                    s->mb_intra= 0;
                    ff_mpeg4_set_direct_mv(s, 0, 0);
                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
                                 &dmin, &next_block, 0, 0);
                }
2841
                if (!best_s.mb_intra && s->mpv_flags & FF_MPV_FLAG_SKIP_RD) {
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                    int coded=0;
                    for(i=0; i<6; i++)
                        coded |= s->block_last_index[i];
                    if(coded){
                        int mx,my;
                        memcpy(s->mv, best_s.mv, sizeof(s->mv));
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                        if(CONFIG_MPEG4_ENCODER && best_s.mv_dir & MV_DIRECT){
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                            mx=my=0; //FIXME find the one we actually used
                            ff_mpeg4_set_direct_mv(s, mx, my);
                        }else if(best_s.mv_dir&MV_DIR_BACKWARD){
                            mx= s->mv[1][0][0];
                            my= s->mv[1][0][1];
                        }else{
                            mx= s->mv[0][0][0];
                            my= s->mv[0][0][1];
                        }

                        s->mv_dir= best_s.mv_dir;
                        s->mv_type = best_s.mv_type;
                        s->mb_intra= 0;
/*                        s->mv[0][0][0] = best_s.mv[0][0][0];
                        s->mv[0][0][1] = best_s.mv[0][0][1];
                        s->mv[1][0][0] = best_s.mv[1][0][0];
                        s->mv[1][0][1] = best_s.mv[1][0][1];*/
                        backup_s.dquant= 0;
                        s->skipdct=1;
                        encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
                                        &dmin, &next_block, mx, my);
                        s->skipdct=0;
                    }
                }

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                s->current_picture.qscale_table[xy] = best_s.qscale;
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                copy_context_after_encode(s, &best_s, -1);

                pb_bits_count= put_bits_count(&s->pb);
                flush_put_bits(&s->pb);
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                avpriv_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
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                s->pb= backup_s.pb;

                if(s->data_partitioning){
                    pb2_bits_count= put_bits_count(&s->pb2);
                    flush_put_bits(&s->pb2);
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                    avpriv_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
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                    s->pb2= backup_s.pb2;

                    tex_pb_bits_count= put_bits_count(&s->tex_pb);
                    flush_put_bits(&s->tex_pb);
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                    avpriv_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
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                    s->tex_pb= backup_s.tex_pb;
                }
                s->last_bits= put_bits_count(&s->pb);

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                if (CONFIG_H263_ENCODER &&
2897
                    s->out_format == FMT_H263 && s->pict_type!=AV_PICTURE_TYPE_B)
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                    ff_h263_update_motion_val(s);

                if(next_block==0){ //FIXME 16 vs linesize16
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                    s->hdsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
                    s->hdsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
                    s->hdsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
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                }

                if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
2907
                    ff_MPV_decode_mb(s, s->block);
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            } else {
                int motion_x = 0, motion_y = 0;
                s->mv_type=MV_TYPE_16X16;
                // only one MB-Type possible

                switch(mb_type){
                case CANDIDATE_MB_TYPE_INTRA:
                    s->mv_dir = 0;
                    s->mb_intra= 1;
                    motion_x= s->mv[0][0][0] = 0;
                    motion_y= s->mv[0][0][1] = 0;
                    break;
                case CANDIDATE_MB_TYPE_INTER:
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mb_intra= 0;
                    motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
                    motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
                    break;
                case CANDIDATE_MB_TYPE_INTER_I:
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(i=0; i<2; i++){
                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
                    }
                    break;
                case CANDIDATE_MB_TYPE_INTER4V:
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_8X8;
                    s->mb_intra= 0;
                    for(i=0; i<4; i++){
2941 2942
                        s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
2943 2944 2945
                    }
                    break;
                case CANDIDATE_MB_TYPE_DIRECT:
2946
                    if (CONFIG_MPEG4_ENCODER) {
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2947 2948 2949 2950 2951
                        s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
                        s->mb_intra= 0;
                        motion_x=s->b_direct_mv_table[xy][0];
                        motion_y=s->b_direct_mv_table[xy][1];
                        ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
2952
                    }
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                    break;
                case CANDIDATE_MB_TYPE_DIRECT0:
2955
                    if (CONFIG_MPEG4_ENCODER) {
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                        s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
                        s->mb_intra= 0;
                        ff_mpeg4_set_direct_mv(s, 0, 0);
2959
                    }
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                    break;
                case CANDIDATE_MB_TYPE_BIDIR:
                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
                    s->mb_intra= 0;
                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
                    s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
                    s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
                    s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
                    break;
                case CANDIDATE_MB_TYPE_BACKWARD:
                    s->mv_dir = MV_DIR_BACKWARD;
                    s->mb_intra= 0;
                    motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
                    motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
                    break;
                case CANDIDATE_MB_TYPE_FORWARD:
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mb_intra= 0;
                    motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
                    motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
                    break;
                case CANDIDATE_MB_TYPE_FORWARD_I:
                    s->mv_dir = MV_DIR_FORWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(i=0; i<2; i++){
                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
                    }
                    break;
                case CANDIDATE_MB_TYPE_BACKWARD_I:
                    s->mv_dir = MV_DIR_BACKWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(i=0; i<2; i++){
                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
                    }
                    break;
                case CANDIDATE_MB_TYPE_BIDIR_I:
                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
                    s->mv_type = MV_TYPE_FIELD;
                    s->mb_intra= 0;
                    for(dir=0; dir<2; dir++){
                        for(i=0; i<2; i++){
                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
                        }
                    }
                    break;
                default:
                    av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
                }

                encode_mb(s, motion_x, motion_y);

                // RAL: Update last macroblock type
                s->last_mv_dir = s->mv_dir;

3022
                if (CONFIG_H263_ENCODER &&
3023
                    s->out_format == FMT_H263 && s->pict_type!=AV_PICTURE_TYPE_B)
3024 3025
                    ff_h263_update_motion_val(s);

3026
                ff_MPV_decode_mb(s, s->block);
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            }

            /* clean the MV table in IPS frames for direct mode in B frames */
            if(s->mb_intra /* && I,P,S_TYPE */){
                s->p_mv_table[xy][0]=0;
                s->p_mv_table[xy][1]=0;
            }

            if(s->flags&CODEC_FLAG_PSNR){
                int w= 16;
                int h= 16;

                if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
                if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;

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                s->current_picture.f.error[0] += sse(
                    s, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
3044
                    s->dest[0], w, h, s->linesize);
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                s->current_picture.f.error[1] += sse(
                    s, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
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3047
                    s->dest[1], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
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                s->current_picture.f.error[2] += sse(
                    s, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
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3050
                    s->dest[2], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
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            }
            if(s->loop_filter){
3053
                if(CONFIG_H263_ENCODER && s->out_format == FMT_H263)
3054 3055
                    ff_h263_loop_filter(s);
            }
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            av_dlog(s->avctx, "MB %d %d bits\n",
                    s->mb_x + s->mb_y * s->mb_stride, put_bits_count(&s->pb));
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        }
    }

    //not beautiful here but we must write it before flushing so it has to be here
3062
    if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == AV_PICTURE_TYPE_I)
3063
        ff_msmpeg4_encode_ext_header(s);
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    write_slice_end(s);

    /* Send the last GOB if RTP */
    if (s->avctx->rtp_callback) {
        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
3070
        pdif = put_bits_ptr(&s->pb) - s->ptr_lastgob;
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        /* Call the RTP callback to send the last GOB */
        emms_c();
        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
    }

    return 0;
}

#define MERGE(field) dst->field += src->field; src->field=0
static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
    MERGE(me.scene_change_score);
    MERGE(me.mc_mb_var_sum_temp);
    MERGE(me.mb_var_sum_temp);
}

static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
    int i;

    MERGE(dct_count[0]); //note, the other dct vars are not part of the context
    MERGE(dct_count[1]);
    MERGE(mv_bits);
    MERGE(i_tex_bits);
    MERGE(p_tex_bits);
    MERGE(i_count);
    MERGE(f_count);
    MERGE(b_count);
    MERGE(skip_count);
    MERGE(misc_bits);
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    MERGE(er.error_count);
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    MERGE(padding_bug_score);
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    MERGE(current_picture.f.error[0]);
    MERGE(current_picture.f.error[1]);
    MERGE(current_picture.f.error[2]);
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    if(dst->avctx->noise_reduction){
        for(i=0; i<64; i++){
            MERGE(dct_error_sum[0][i]);
            MERGE(dct_error_sum[1][i]);
        }
    }

    assert(put_bits_count(&src->pb) % 8 ==0);
    assert(put_bits_count(&dst->pb) % 8 ==0);
3114
    avpriv_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
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    flush_put_bits(&dst->pb);
}

static int estimate_qp(MpegEncContext *s, int dry_run){
    if (s->next_lambda){
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        s->current_picture_ptr->f.quality =
        s->current_picture.f.quality = s->next_lambda;
3122 3123
        if(!dry_run) s->next_lambda= 0;
    } else if (!s->fixed_qscale) {
3124 3125 3126
        s->current_picture_ptr->f.quality =
        s->current_picture.f.quality = ff_rate_estimate_qscale(s, dry_run);
        if (s->current_picture.f.quality < 0)
3127 3128 3129 3130 3131
            return -1;
    }

    if(s->adaptive_quant){
        switch(s->codec_id){
3132
        case AV_CODEC_ID_MPEG4:
3133
            if (CONFIG_MPEG4_ENCODER)
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3134
                ff_clean_mpeg4_qscales(s);
3135
            break;
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        case AV_CODEC_ID_H263:
        case AV_CODEC_ID_H263P:
        case AV_CODEC_ID_FLV1:
3139
            if (CONFIG_H263_ENCODER)
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3140
                ff_clean_h263_qscales(s);
3141
            break;
3142 3143
        default:
            ff_init_qscale_tab(s);
3144 3145 3146 3147 3148
        }

        s->lambda= s->lambda_table[0];
        //FIXME broken
    }else
3149
        s->lambda = s->current_picture.f.quality;
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    update_qscale(s);
    return 0;
}

3154 3155
/* must be called before writing the header */
static void set_frame_distances(MpegEncContext * s){
3156
    assert(s->current_picture_ptr->f.pts != AV_NOPTS_VALUE);
3157
    s->time = s->current_picture_ptr->f.pts * s->avctx->time_base.num;
3158

3159
    if(s->pict_type==AV_PICTURE_TYPE_B){
3160 3161 3162 3163 3164 3165 3166 3167 3168
        s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
        assert(s->pb_time > 0 && s->pb_time < s->pp_time);
    }else{
        s->pp_time= s->time - s->last_non_b_time;
        s->last_non_b_time= s->time;
        assert(s->picture_number==0 || s->pp_time > 0);
    }
}

3169 3170
static int encode_picture(MpegEncContext *s, int picture_number)
{
3171
    int i, ret;
3172
    int bits;
3173
    int context_count = s->slice_context_count;
3174 3175 3176 3177 3178 3179 3180 3181 3182

    s->picture_number = picture_number;

    /* Reset the average MB variance */
    s->me.mb_var_sum_temp    =
    s->me.mc_mb_var_sum_temp = 0;

    /* we need to initialize some time vars before we can encode b-frames */
    // RAL: Condition added for MPEG1VIDEO
3183
    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->msmpeg4_version))
3184
        set_frame_distances(s);
3185
    if(CONFIG_MPEG4_ENCODER && s->codec_id == AV_CODEC_ID_MPEG4)
3186
        ff_set_mpeg4_time(s);
3187 3188 3189

    s->me.scene_change_score=0;

3190
//    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME rate distortion
3191

3192
    if(s->pict_type==AV_PICTURE_TYPE_I){
3193 3194
        if(s->msmpeg4_version >= 3) s->no_rounding=1;
        else                        s->no_rounding=0;
3195
    }else if(s->pict_type!=AV_PICTURE_TYPE_B){
3196
        if(s->flipflop_rounding || s->codec_id == AV_CODEC_ID_H263P || s->codec_id == AV_CODEC_ID_MPEG4)
3197 3198 3199 3200 3201 3202 3203 3204
            s->no_rounding ^= 1;
    }

    if(s->flags & CODEC_FLAG_PASS2){
        if (estimate_qp(s,1) < 0)
            return -1;
        ff_get_2pass_fcode(s);
    }else if(!(s->flags & CODEC_FLAG_QSCALE)){
3205
        if(s->pict_type==AV_PICTURE_TYPE_B)
3206 3207 3208 3209 3210 3211
            s->lambda= s->last_lambda_for[s->pict_type];
        else
            s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
        update_qscale(s);
    }

3212
    if(s->codec_id != AV_CODEC_ID_AMV){
3213 3214 3215 3216 3217 3218
        if(s->q_chroma_intra_matrix   != s->q_intra_matrix  ) av_freep(&s->q_chroma_intra_matrix);
        if(s->q_chroma_intra_matrix16 != s->q_intra_matrix16) av_freep(&s->q_chroma_intra_matrix16);
        s->q_chroma_intra_matrix   = s->q_intra_matrix;
        s->q_chroma_intra_matrix16 = s->q_intra_matrix16;
    }

3219
    s->mb_intra=0; //for the rate distortion & bit compare functions
3220
    for(i=1; i<context_count; i++){
3221 3222 3223
        ret = ff_update_duplicate_context(s->thread_context[i], s);
        if (ret < 0)
            return ret;
3224 3225
    }

3226 3227
    if(ff_init_me(s)<0)
        return -1;
3228 3229

    /* Estimate motion for every MB */
3230
    if(s->pict_type != AV_PICTURE_TYPE_I){
3231 3232
        s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
        s->lambda2= (s->lambda2* (int64_t)s->avctx->me_penalty_compensation + 128)>>8;
3233
        if (s->pict_type != AV_PICTURE_TYPE_B) {
3234
            if((s->avctx->pre_me && s->last_non_b_pict_type==AV_PICTURE_TYPE_I) || s->avctx->pre_me==2){
3235
                s->avctx->execute(s->avctx, pre_estimate_motion_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
3236 3237 3238
            }
        }

3239
        s->avctx->execute(s->avctx, estimate_motion_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
3240
    }else /* if(s->pict_type == AV_PICTURE_TYPE_I) */{
3241 3242 3243 3244 3245 3246
        /* I-Frame */
        for(i=0; i<s->mb_stride*s->mb_height; i++)
            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;

        if(!s->fixed_qscale){
            /* finding spatial complexity for I-frame rate control */
3247
            s->avctx->execute(s->avctx, mb_var_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
3248 3249
        }
    }
3250
    for(i=1; i<context_count; i++){
3251 3252 3253 3254 3255 3256
        merge_context_after_me(s, s->thread_context[i]);
    }
    s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
    s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
    emms_c();

3257 3258
    if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == AV_PICTURE_TYPE_P){
        s->pict_type= AV_PICTURE_TYPE_I;
3259 3260
        for(i=0; i<s->mb_stride*s->mb_height; i++)
            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
3261 3262
        if(s->msmpeg4_version >= 3)
            s->no_rounding=1;
3263 3264
        av_dlog(s, "Scene change detected, encoding as I Frame %d %d\n",
                s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
3265 3266 3267
    }

    if(!s->umvplus){
3268
        if(s->pict_type==AV_PICTURE_TYPE_P || s->pict_type==AV_PICTURE_TYPE_S) {
3269 3270 3271 3272 3273 3274
            s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);

            if(s->flags & CODEC_FLAG_INTERLACED_ME){
                int a,b;
                a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
                b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
3275
                s->f_code= FFMAX3(s->f_code, a, b);
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            }

            ff_fix_long_p_mvs(s);
            ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
            if(s->flags & CODEC_FLAG_INTERLACED_ME){
                int j;
                for(i=0; i<2; i++){
                    for(j=0; j<2; j++)
                        ff_fix_long_mvs(s, s->p_field_select_table[i], j,
                                        s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
                }
            }
        }

3290
        if(s->pict_type==AV_PICTURE_TYPE_B){
3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323
            int a, b;

            a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
            b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
            s->f_code = FFMAX(a, b);

            a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
            b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
            s->b_code = FFMAX(a, b);

            ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
            ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
            if(s->flags & CODEC_FLAG_INTERLACED_ME){
                int dir, j;
                for(dir=0; dir<2; dir++){
                    for(i=0; i<2; i++){
                        for(j=0; j<2; j++){
                            int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
                                          : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
                            ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
                                            s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
                        }
                    }
                }
            }
        }
    }

    if (estimate_qp(s, 0) < 0)
        return -1;

3324
    if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==AV_PICTURE_TYPE_I && !(s->flags & CODEC_FLAG_QSCALE))
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        s->qscale= 3; //reduce clipping problems

    if (s->out_format == FMT_MJPEG) {
        /* for mjpeg, we do include qscale in the matrix */
        for(i=1;i<64;i++){
            int j= s->dsp.idct_permutation[i];

            s->intra_matrix[j] = av_clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
        }
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        s->y_dc_scale_table=
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        s->c_dc_scale_table= ff_mpeg2_dc_scale_table[s->intra_dc_precision];
        s->intra_matrix[0] = ff_mpeg2_dc_scale_table[s->intra_dc_precision][8];
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        ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
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                       s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
        s->qscale= 8;
    }
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    if(s->codec_id == AV_CODEC_ID_AMV){
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        static const uint8_t y[32]={13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13};
        static const uint8_t c[32]={14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14};
        for(i=1;i<64;i++){
            int j= s->dsp.idct_permutation[ff_zigzag_direct[i]];

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            s->intra_matrix[j] = sp5x_quant_table[5*2+0][i];
            s->chroma_intra_matrix[j] = sp5x_quant_table[5*2+1][i];
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        }
        s->y_dc_scale_table= y;
        s->c_dc_scale_table= c;
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        s->intra_matrix[0] = 13;
        s->chroma_intra_matrix[0] = 14;
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        ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
                       s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
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        ff_convert_matrix(&s->dsp, s->q_chroma_intra_matrix, s->q_chroma_intra_matrix16,
                       s->chroma_intra_matrix, s->intra_quant_bias, 8, 8, 1);
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        s->qscale= 8;
    }
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    //FIXME var duplication
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    s->current_picture_ptr->f.key_frame =
    s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I; //FIXME pic_ptr
    s->current_picture_ptr->f.pict_type =
    s->current_picture.f.pict_type = s->pict_type;
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    if (s->current_picture.f.key_frame)
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        s->picture_in_gop_number=0;

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    s->mb_x = s->mb_y = 0;
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    s->last_bits= put_bits_count(&s->pb);
    switch(s->out_format) {
    case FMT_MJPEG:
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        if (CONFIG_MJPEG_ENCODER)
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            ff_mjpeg_encode_picture_header(s);
        break;
    case FMT_H261:
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        if (CONFIG_H261_ENCODER)
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            ff_h261_encode_picture_header(s, picture_number);
        break;
    case FMT_H263:
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        if (CONFIG_WMV2_ENCODER && s->codec_id == AV_CODEC_ID_WMV2)
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            ff_wmv2_encode_picture_header(s, picture_number);
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        else if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version)
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            ff_msmpeg4_encode_picture_header(s, picture_number);
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        else if (CONFIG_MPEG4_ENCODER && s->h263_pred)
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            ff_mpeg4_encode_picture_header(s, picture_number);
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        else if (CONFIG_RV10_ENCODER && s->codec_id == AV_CODEC_ID_RV10)
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            ff_rv10_encode_picture_header(s, picture_number);
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        else if (CONFIG_RV20_ENCODER && s->codec_id == AV_CODEC_ID_RV20)
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            ff_rv20_encode_picture_header(s, picture_number);
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        else if (CONFIG_FLV_ENCODER && s->codec_id == AV_CODEC_ID_FLV1)
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            ff_flv_encode_picture_header(s, picture_number);
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        else if (CONFIG_H263_ENCODER)
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            ff_h263_encode_picture_header(s, picture_number);
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        break;
    case FMT_MPEG1:
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        if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
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            ff_mpeg1_encode_picture_header(s, picture_number);
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        break;
    default:
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        av_assert0(0);
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    }
    bits= put_bits_count(&s->pb);
    s->header_bits= bits - s->last_bits;

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    for(i=1; i<context_count; i++){
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        update_duplicate_context_after_me(s->thread_context[i], s);
    }
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    s->avctx->execute(s->avctx, encode_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
    for(i=1; i<context_count; i++){
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        merge_context_after_encode(s, s->thread_context[i]);
    }
    emms_c();
    return 0;
}

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3418
static void denoise_dct_c(MpegEncContext *s, int16_t *block){
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    const int intra= s->mb_intra;
    int i;

    s->dct_count[intra]++;

    for(i=0; i<64; i++){
        int level= block[i];

        if(level){
            if(level>0){
                s->dct_error_sum[intra][i] += level;
                level -= s->dct_offset[intra][i];
                if(level<0) level=0;
            }else{
                s->dct_error_sum[intra][i] -= level;
                level += s->dct_offset[intra][i];
                if(level>0) level=0;
            }
            block[i]= level;
        }
    }
}

3442
static int dct_quantize_trellis_c(MpegEncContext *s,
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                                  int16_t *block, int n,
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                                  int qscale, int *overflow){
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    const int *qmat;
    const uint8_t *scantable= s->intra_scantable.scantable;
    const uint8_t *perm_scantable= s->intra_scantable.permutated;
    int max=0;
    unsigned int threshold1, threshold2;
    int bias=0;
    int run_tab[65];
    int level_tab[65];
    int score_tab[65];
    int survivor[65];
    int survivor_count;
    int last_run=0;
    int last_level=0;
    int last_score= 0;
    int last_i;
    int coeff[2][64];
    int coeff_count[64];
    int qmul, qadd, start_i, last_non_zero, i, dc;
    const int esc_length= s->ac_esc_length;
    uint8_t * length;
    uint8_t * last_length;
    const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);

    s->dsp.fdct (block);

    if(s->dct_error_sum)
        s->denoise_dct(s, block);
    qmul= qscale*16;
    qadd= ((qscale-1)|1)*8;

    if (s->mb_intra) {
        int q;
        if (!s->h263_aic) {
            if (n < 4)
                q = s->y_dc_scale;
            else
                q = s->c_dc_scale;
            q = q << 3;
        } else{
            /* For AIC we skip quant/dequant of INTRADC */
            q = 1 << 3;
            qadd=0;
        }

        /* note: block[0] is assumed to be positive */
        block[0] = (block[0] + (q >> 1)) / q;
        start_i = 1;
        last_non_zero = 0;
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        qmat = n < 4 ? s->q_intra_matrix[qscale] : s->q_chroma_intra_matrix[qscale];
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        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
            bias= 1<<(QMAT_SHIFT-1);
        length     = s->intra_ac_vlc_length;
        last_length= s->intra_ac_vlc_last_length;
    } else {
        start_i = 0;
        last_non_zero = -1;
        qmat = s->q_inter_matrix[qscale];
        length     = s->inter_ac_vlc_length;
        last_length= s->inter_ac_vlc_last_length;
    }
    last_i= start_i;

    threshold1= (1<<QMAT_SHIFT) - bias - 1;
    threshold2= (threshold1<<1);

    for(i=63; i>=start_i; i--) {
        const int j = scantable[i];
        int level = block[j] * qmat[j];

        if(((unsigned)(level+threshold1))>threshold2){
            last_non_zero = i;
            break;
        }
    }

    for(i=start_i; i<=last_non_zero; i++) {
        const int j = scantable[i];
        int level = block[j] * qmat[j];

//        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
//           || bias-level >= (1<<(QMAT_SHIFT - 3))){
        if(((unsigned)(level+threshold1))>threshold2){
            if(level>0){
                level= (bias + level)>>QMAT_SHIFT;
                coeff[0][i]= level;
                coeff[1][i]= level-1;
//                coeff[2][k]= level-2;
            }else{
                level= (bias - level)>>QMAT_SHIFT;
                coeff[0][i]= -level;
                coeff[1][i]= -level+1;
//                coeff[2][k]= -level+2;
            }
            coeff_count[i]= FFMIN(level, 2);
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            av_assert2(coeff_count[i]);
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            max |=level;
        }else{
            coeff[0][i]= (level>>31)|1;
            coeff_count[i]= 1;
        }
    }

    *overflow= s->max_qcoeff < max; //overflow might have happened

    if(last_non_zero < start_i){
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        memset(block + start_i, 0, (64-start_i)*sizeof(int16_t));
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        return last_non_zero;
    }

    score_tab[start_i]= 0;
    survivor[0]= start_i;
    survivor_count= 1;

    for(i=start_i; i<=last_non_zero; i++){
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        int level_index, j, zero_distortion;
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        int dct_coeff= FFABS(block[ scantable[i] ]);
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        int best_score=256*256*256*120;
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        if (s->dsp.fdct == ff_fdct_ifast)
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            dct_coeff= (dct_coeff*ff_inv_aanscales[ scantable[i] ]) >> 12;
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        zero_distortion= dct_coeff*dct_coeff;
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        for(level_index=0; level_index < coeff_count[i]; level_index++){
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            int distortion;
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            int level= coeff[level_index][i];
            const int alevel= FFABS(level);
            int unquant_coeff;

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            av_assert2(level);
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            if(s->out_format == FMT_H263){
                unquant_coeff= alevel*qmul + qadd;
            }else{ //MPEG1
                j= s->dsp.idct_permutation[ scantable[i] ]; //FIXME optimize
                if(s->mb_intra){
                        unquant_coeff = (int)(  alevel  * qscale * s->intra_matrix[j]) >> 3;
                        unquant_coeff =   (unquant_coeff - 1) | 1;
                }else{
                        unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[j])) >> 4;
                        unquant_coeff =   (unquant_coeff - 1) | 1;
                }
                unquant_coeff<<= 3;
            }

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            distortion= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distortion;
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            level+=64;
            if((level&(~127)) == 0){
                for(j=survivor_count-1; j>=0; j--){
                    int run= i - survivor[j];
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                    int score= distortion + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
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                    score += score_tab[i-run];

                    if(score < best_score){
                        best_score= score;
                        run_tab[i+1]= run;
                        level_tab[i+1]= level-64;
                    }
                }

                if(s->out_format == FMT_H263){
                    for(j=survivor_count-1; j>=0; j--){
                        int run= i - survivor[j];
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                        int score= distortion + last_length[UNI_AC_ENC_INDEX(run, level)]*lambda;
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                        score += score_tab[i-run];
                        if(score < last_score){
                            last_score= score;
                            last_run= run;
                            last_level= level-64;
                            last_i= i+1;
                        }
                    }
                }
            }else{
3618
                distortion += esc_length*lambda;
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                for(j=survivor_count-1; j>=0; j--){
                    int run= i - survivor[j];
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                    int score= distortion + score_tab[i-run];
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                    if(score < best_score){
                        best_score= score;
                        run_tab[i+1]= run;
                        level_tab[i+1]= level-64;
                    }
                }

                if(s->out_format == FMT_H263){
                  for(j=survivor_count-1; j>=0; j--){
                        int run= i - survivor[j];
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                        int score= distortion + score_tab[i-run];
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                        if(score < last_score){
                            last_score= score;
                            last_run= run;
                            last_level= level-64;
                            last_i= i+1;
                        }
                    }
                }
            }
        }

        score_tab[i+1]= best_score;

        //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
        if(last_non_zero <= 27){
            for(; survivor_count; survivor_count--){
                if(score_tab[ survivor[survivor_count-1] ] <= best_score)
                    break;
            }
        }else{
            for(; survivor_count; survivor_count--){
                if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
                    break;
            }
        }

        survivor[ survivor_count++ ]= i+1;
    }

    if(s->out_format != FMT_H263){
        last_score= 256*256*256*120;
        for(i= survivor[0]; i<=last_non_zero + 1; i++){
            int score= score_tab[i];
            if(i) score += lambda*2; //FIXME exacter?

            if(score < last_score){
                last_score= score;
                last_i= i;
                last_level= level_tab[i];
                last_run= run_tab[i];
            }
        }
    }

    s->coded_score[n] = last_score;

    dc= FFABS(block[0]);
    last_non_zero= last_i - 1;
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3682
    memset(block + start_i, 0, (64-start_i)*sizeof(int16_t));
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    if(last_non_zero < start_i)
        return last_non_zero;

    if(last_non_zero == 0 && start_i == 0){
        int best_level= 0;
        int best_score= dc * dc;

        for(i=0; i<coeff_count[0]; i++){
            int level= coeff[i][0];
            int alevel= FFABS(level);
            int unquant_coeff, score, distortion;

            if(s->out_format == FMT_H263){
                    unquant_coeff= (alevel*qmul + qadd)>>3;
            }else{ //MPEG1
                    unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[0])) >> 4;
                    unquant_coeff =   (unquant_coeff - 1) | 1;
            }
            unquant_coeff = (unquant_coeff + 4) >> 3;
            unquant_coeff<<= 3 + 3;

            distortion= (unquant_coeff - dc) * (unquant_coeff - dc);
            level+=64;
            if((level&(~127)) == 0) score= distortion + last_length[UNI_AC_ENC_INDEX(0, level)]*lambda;
            else                    score= distortion + esc_length*lambda;

            if(score < best_score){
                best_score= score;
                best_level= level - 64;
            }
        }
        block[0]= best_level;
        s->coded_score[n] = best_score - dc*dc;
        if(best_level == 0) return -1;
        else                return last_non_zero;
    }

    i= last_i;
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    av_assert2(last_level);
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    block[ perm_scantable[last_non_zero] ]= last_level;
    i -= last_run + 1;

    for(; i>start_i; i -= run_tab[i] + 1){
        block[ perm_scantable[i-1] ]= level_tab[i];
    }

    return last_non_zero;
}

//#define REFINE_STATS 1
static int16_t basis[64][64];

static void build_basis(uint8_t *perm){
    int i, j, x, y;
    emms_c();
    for(i=0; i<8; i++){
        for(j=0; j<8; j++){
            for(y=0; y<8; y++){
                for(x=0; x<8; x++){
                    double s= 0.25*(1<<BASIS_SHIFT);
                    int index= 8*i + j;
                    int perm_index= perm[index];
                    if(i==0) s*= sqrt(0.5);
                    if(j==0) s*= sqrt(0.5);
                    basis[perm_index][8*x + y]= lrintf(s * cos((M_PI/8.0)*i*(x+0.5)) * cos((M_PI/8.0)*j*(y+0.5)));
                }
            }
        }
    }
}

static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
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                        int16_t *block, int16_t *weight, int16_t *orig,
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                        int n, int qscale){
    int16_t rem[64];
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    LOCAL_ALIGNED_16(int16_t, d1, [64]);
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    const uint8_t *scantable= s->intra_scantable.scantable;
    const uint8_t *perm_scantable= s->intra_scantable.permutated;
//    unsigned int threshold1, threshold2;
//    int bias=0;
    int run_tab[65];
    int prev_run=0;
    int prev_level=0;
    int qmul, qadd, start_i, last_non_zero, i, dc;
    uint8_t * length;
    uint8_t * last_length;
    int lambda;
    int rle_index, run, q = 1, sum; //q is only used when s->mb_intra is true
#ifdef REFINE_STATS
static int count=0;
static int after_last=0;
static int to_zero=0;
static int from_zero=0;
static int raise=0;
static int lower=0;
static int messed_sign=0;
#endif

    if(basis[0][0] == 0)
        build_basis(s->dsp.idct_permutation);

    qmul= qscale*2;
    qadd= (qscale-1)|1;
    if (s->mb_intra) {
        if (!s->h263_aic) {
            if (n < 4)
                q = s->y_dc_scale;
            else
                q = s->c_dc_scale;
        } else{
            /* For AIC we skip quant/dequant of INTRADC */
            q = 1;
            qadd=0;
        }
        q <<= RECON_SHIFT-3;
        /* note: block[0] is assumed to be positive */
        dc= block[0]*q;
//        block[0] = (block[0] + (q >> 1)) / q;
        start_i = 1;
//        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
//            bias= 1<<(QMAT_SHIFT-1);
        length     = s->intra_ac_vlc_length;
        last_length= s->intra_ac_vlc_last_length;
    } else {
        dc= 0;
        start_i = 0;
        length     = s->inter_ac_vlc_length;
        last_length= s->inter_ac_vlc_last_length;
    }
    last_non_zero = s->block_last_index[n];

#ifdef REFINE_STATS
{START_TIMER
#endif
    dc += (1<<(RECON_SHIFT-1));
    for(i=0; i<64; i++){
        rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
    }
#ifdef REFINE_STATS
STOP_TIMER("memset rem[]")}
#endif
    sum=0;
    for(i=0; i<64; i++){
        int one= 36;
        int qns=4;
        int w;

        w= FFABS(weight[i]) + qns*one;
        w= 15 + (48*qns*one + w/2)/w; // 16 .. 63

        weight[i] = w;
//        w=weight[i] = (63*qns + (w/2)) / w;

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        av_assert2(w>0);
        av_assert2(w<(1<<6));
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        sum += w*w;
    }
    lambda= sum*(uint64_t)s->lambda2 >> (FF_LAMBDA_SHIFT - 6 + 6 + 6 + 6);
#ifdef REFINE_STATS
{START_TIMER
#endif
    run=0;
    rle_index=0;
    for(i=start_i; i<=last_non_zero; i++){
        int j= perm_scantable[i];
        const int level= block[j];
        int coeff;

        if(level){
            if(level<0) coeff= qmul*level - qadd;
            else        coeff= qmul*level + qadd;
            run_tab[rle_index++]=run;
            run=0;

            s->dsp.add_8x8basis(rem, basis[j], coeff);
        }else{
            run++;
        }
    }
#ifdef REFINE_STATS
if(last_non_zero>0){
STOP_TIMER("init rem[]")
}
}

{START_TIMER
#endif
    for(;;){
        int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
        int best_coeff=0;
        int best_change=0;
        int run2, best_unquant_change=0, analyze_gradient;
#ifdef REFINE_STATS
{START_TIMER
#endif
3880
        analyze_gradient = last_non_zero > 2 || s->quantizer_noise_shaping >= 3;
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        if(analyze_gradient){
#ifdef REFINE_STATS
{START_TIMER
#endif
            for(i=0; i<64; i++){
                int w= weight[i];

                d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
            }
#ifdef REFINE_STATS
STOP_TIMER("rem*w*w")}
{START_TIMER
#endif
            s->dsp.fdct(d1);
#ifdef REFINE_STATS
STOP_TIMER("dct")}
#endif
        }

        if(start_i){
            const int level= block[0];
            int change, old_coeff;

3905
            av_assert2(s->mb_intra);
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            old_coeff= q*level;

            for(change=-1; change<=1; change+=2){
                int new_level= level + change;
                int score, new_coeff;

                new_coeff= q*new_level;
                if(new_coeff >= 2048 || new_coeff < 0)
                    continue;

                score= s->dsp.try_8x8basis(rem, weight, basis[0], new_coeff - old_coeff);
                if(score<best_score){
                    best_score= score;
                    best_coeff= 0;
                    best_change= change;
                    best_unquant_change= new_coeff - old_coeff;
                }
            }
        }

        run=0;
        rle_index=0;
        run2= run_tab[rle_index++];
        prev_level=0;
        prev_run=0;

        for(i=start_i; i<64; i++){
            int j= perm_scantable[i];
            const int level= block[j];
            int change, old_coeff;

3938
            if(s->quantizer_noise_shaping < 3 && i > last_non_zero + 1)
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                break;

            if(level){
                if(level<0) old_coeff= qmul*level - qadd;
                else        old_coeff= qmul*level + qadd;
                run2= run_tab[rle_index++]; //FIXME ! maybe after last
            }else{
                old_coeff=0;
                run2--;
3948
                av_assert2(run2>=0 || i >= last_non_zero );
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            }

            for(change=-1; change<=1; change+=2){
                int new_level= level + change;
                int score, new_coeff, unquant_change;

                score=0;
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                if(s->quantizer_noise_shaping < 2 && FFABS(new_level) > FFABS(level))
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                   continue;

                if(new_level){
                    if(new_level<0) new_coeff= qmul*new_level - qadd;
                    else            new_coeff= qmul*new_level + qadd;
                    if(new_coeff >= 2048 || new_coeff <= -2048)
                        continue;
                    //FIXME check for overflow

                    if(level){
                        if(level < 63 && level > -63){
                            if(i < last_non_zero)
                                score +=   length[UNI_AC_ENC_INDEX(run, new_level+64)]
                                         - length[UNI_AC_ENC_INDEX(run, level+64)];
                            else
                                score +=   last_length[UNI_AC_ENC_INDEX(run, new_level+64)]
                                         - last_length[UNI_AC_ENC_INDEX(run, level+64)];
                        }
                    }else{
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                        av_assert2(FFABS(new_level)==1);
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                        if(analyze_gradient){
                            int g= d1[ scantable[i] ];
                            if(g && (g^new_level) >= 0)
                                continue;
                        }

                        if(i < last_non_zero){
                            int next_i= i + run2 + 1;
                            int next_level= block[ perm_scantable[next_i] ] + 64;

                            if(next_level&(~127))
                                next_level= 0;

                            if(next_i < last_non_zero)
                                score +=   length[UNI_AC_ENC_INDEX(run, 65)]
                                         + length[UNI_AC_ENC_INDEX(run2, next_level)]
                                         - length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
                            else
                                score +=  length[UNI_AC_ENC_INDEX(run, 65)]
                                        + last_length[UNI_AC_ENC_INDEX(run2, next_level)]
                                        - last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
                        }else{
                            score += last_length[UNI_AC_ENC_INDEX(run, 65)];
                            if(prev_level){
                                score +=  length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
                                        - last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
                            }
                        }
                    }
                }else{
                    new_coeff=0;
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                    av_assert2(FFABS(level)==1);
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                    if(i < last_non_zero){
                        int next_i= i + run2 + 1;
                        int next_level= block[ perm_scantable[next_i] ] + 64;

                        if(next_level&(~127))
                            next_level= 0;

                        if(next_i < last_non_zero)
                            score +=   length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
                                     - length[UNI_AC_ENC_INDEX(run2, next_level)]
                                     - length[UNI_AC_ENC_INDEX(run, 65)];
                        else
                            score +=   last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
                                     - last_length[UNI_AC_ENC_INDEX(run2, next_level)]
                                     - length[UNI_AC_ENC_INDEX(run, 65)];
                    }else{
                        score += -last_length[UNI_AC_ENC_INDEX(run, 65)];
                        if(prev_level){
                            score +=  last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
                                    - length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
                        }
                    }
                }

                score *= lambda;

                unquant_change= new_coeff - old_coeff;
4038
                av_assert2((score < 100*lambda && score > -100*lambda) || lambda==0);
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                score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
                if(score<best_score){
                    best_score= score;
                    best_coeff= i;
                    best_change= change;
                    best_unquant_change= unquant_change;
                }
            }
            if(level){
                prev_level= level + 64;
                if(prev_level&(~127))
                    prev_level= 0;
                prev_run= run;
                run=0;
            }else{
                run++;
            }
        }
#ifdef REFINE_STATS
STOP_TIMER("iterative step")}
#endif

        if(best_change){
            int j= perm_scantable[ best_coeff ];

            block[j] += best_change;

            if(best_coeff > last_non_zero){
                last_non_zero= best_coeff;
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                av_assert2(block[j]);
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#ifdef REFINE_STATS
after_last++;
#endif
            }else{
#ifdef REFINE_STATS
if(block[j]){
    if(block[j] - best_change){
        if(FFABS(block[j]) > FFABS(block[j] - best_change)){
            raise++;
        }else{
            lower++;
        }
    }else{
        from_zero++;
    }
}else{
    to_zero++;
}
#endif
                for(; last_non_zero>=start_i; last_non_zero--){
                    if(block[perm_scantable[last_non_zero]])
                        break;
                }
            }
#ifdef REFINE_STATS
count++;
if(256*256*256*64 % count == 0){
4097
    av_log(s->avctx, AV_LOG_DEBUG, "after_last:%d to_zero:%d from_zero:%d raise:%d lower:%d sign:%d xyp:%d/%d/%d\n", after_last, to_zero, from_zero, raise, lower, messed_sign, s->mb_x, s->mb_y, s->picture_number);
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}
#endif
            run=0;
            rle_index=0;
            for(i=start_i; i<=last_non_zero; i++){
                int j= perm_scantable[i];
                const int level= block[j];

                 if(level){
                     run_tab[rle_index++]=run;
                     run=0;
                 }else{
                     run++;
                 }
            }

            s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
        }else{
            break;
        }
    }
#ifdef REFINE_STATS
if(last_non_zero>0){
STOP_TIMER("iterative search")
}
}
#endif

    return last_non_zero;
}

4129
int ff_dct_quantize_c(MpegEncContext *s,
Diego Biurrun's avatar
Diego Biurrun committed
4130
                        int16_t *block, int n,
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                        int qscale, int *overflow)
{
    int i, j, level, last_non_zero, q, start_i;
    const int *qmat;
    const uint8_t *scantable= s->intra_scantable.scantable;
    int bias;
    int max=0;
    unsigned int threshold1, threshold2;

    s->dsp.fdct (block);

    if(s->dct_error_sum)
        s->denoise_dct(s, block);

    if (s->mb_intra) {
        if (!s->h263_aic) {
            if (n < 4)
                q = s->y_dc_scale;
            else
                q = s->c_dc_scale;
            q = q << 3;
        } else
            /* For AIC we skip quant/dequant of INTRADC */
            q = 1 << 3;

        /* note: block[0] is assumed to be positive */
        block[0] = (block[0] + (q >> 1)) / q;
        start_i = 1;
        last_non_zero = 0;
4160
        qmat = n < 4 ? s->q_intra_matrix[qscale] : s->q_chroma_intra_matrix[qscale];
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        bias= s->intra_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
    } else {
        start_i = 0;
        last_non_zero = -1;
        qmat = s->q_inter_matrix[qscale];
        bias= s->inter_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
    }
    threshold1= (1<<QMAT_SHIFT) - bias - 1;
    threshold2= (threshold1<<1);
    for(i=63;i>=start_i;i--) {
        j = scantable[i];
        level = block[j] * qmat[j];

        if(((unsigned)(level+threshold1))>threshold2){
            last_non_zero = i;
            break;
        }else{
            block[j]=0;
        }
    }
    for(i=start_i; i<=last_non_zero; i++) {
        j = scantable[i];
        level = block[j] * qmat[j];

//        if(   bias+level >= (1<<QMAT_SHIFT)
//           || bias-level >= (1<<QMAT_SHIFT)){
        if(((unsigned)(level+threshold1))>threshold2){
            if(level>0){
                level= (bias + level)>>QMAT_SHIFT;
                block[j]= level;
            }else{
                level= (bias - level)>>QMAT_SHIFT;
                block[j]= -level;
            }
            max |=level;
        }else{
            block[j]=0;
        }
    }
    *overflow= s->max_qcoeff < max; //overflow might have happened

    /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
    if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
        ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);

    return last_non_zero;
}

4209 4210 4211
#define OFFSET(x) offsetof(MpegEncContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption h263_options[] = {
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    { "obmc",         "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
    { "structured_slices","Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE},
    { "mb_info",      "emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size", OFFSET(mb_info), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
4215
    FF_MPV_COMMON_OPTS
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    { NULL },
};

static const AVClass h263_class = {
    .class_name = "H.263 encoder",
    .item_name  = av_default_item_name,
    .option     = h263_options,
    .version    = LIBAVUTIL_VERSION_INT,
};

4226
AVCodec ff_h263_encoder = {
4227 4228
    .name           = "h263",
    .type           = AVMEDIA_TYPE_VIDEO,
4229
    .id             = AV_CODEC_ID_H263,
4230
    .priv_data_size = sizeof(MpegEncContext),
4231
    .init           = ff_MPV_encode_init,
4232
    .encode2        = ff_MPV_encode_picture,
4233
    .close          = ff_MPV_encode_end,
4234
    .pix_fmts= (const enum AVPixelFormat[]){AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE},
4235
    .long_name= NULL_IF_CONFIG_SMALL("H.263 / H.263-1996"),
4236
    .priv_class     = &h263_class,
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};

4239
static const AVOption h263p_options[] = {
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    { "umv",        "Use unlimited motion vectors.",    OFFSET(umvplus), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
    { "aiv",        "Use alternative inter VLC.",       OFFSET(alt_inter_vlc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
    { "obmc",       "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
    { "structured_slices", "Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE},
4244
    FF_MPV_COMMON_OPTS
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    { NULL },
};
static const AVClass h263p_class = {
    .class_name = "H.263p encoder",
    .item_name  = av_default_item_name,
4250
    .option     = h263p_options,
4251
    .version    = LIBAVUTIL_VERSION_INT,
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};

4254
AVCodec ff_h263p_encoder = {
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    .name           = "h263p",
    .type           = AVMEDIA_TYPE_VIDEO,
4257
    .id             = AV_CODEC_ID_H263P,
4258
    .priv_data_size = sizeof(MpegEncContext),
4259
    .init           = ff_MPV_encode_init,
4260
    .encode2        = ff_MPV_encode_picture,
4261
    .close          = ff_MPV_encode_end,
4262
    .capabilities   = CODEC_CAP_SLICE_THREADS,
4263
    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
4264
    .long_name      = NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
4265
    .priv_class     = &h263p_class,
4266 4267
};

4268 4269
FF_MPV_GENERIC_CLASS(msmpeg4v2)

4270
AVCodec ff_msmpeg4v2_encoder = {
4271 4272
    .name           = "msmpeg4v2",
    .type           = AVMEDIA_TYPE_VIDEO,
4273
    .id             = AV_CODEC_ID_MSMPEG4V2,
4274
    .priv_data_size = sizeof(MpegEncContext),
4275
    .init           = ff_MPV_encode_init,
4276
    .encode2        = ff_MPV_encode_picture,
4277
    .close          = ff_MPV_encode_end,
4278
    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
4279
    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
4280
    .priv_class     = &msmpeg4v2_class,
4281 4282
};

4283 4284
FF_MPV_GENERIC_CLASS(msmpeg4v3)

4285
AVCodec ff_msmpeg4v3_encoder = {
4286 4287
    .name           = "msmpeg4",
    .type           = AVMEDIA_TYPE_VIDEO,
4288
    .id             = AV_CODEC_ID_MSMPEG4V3,
4289
    .priv_data_size = sizeof(MpegEncContext),
4290
    .init           = ff_MPV_encode_init,
4291
    .encode2        = ff_MPV_encode_picture,
4292
    .close          = ff_MPV_encode_end,
4293
    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
4294
    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
4295
    .priv_class     = &msmpeg4v3_class,
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};

4298 4299
FF_MPV_GENERIC_CLASS(wmv1)

4300
AVCodec ff_wmv1_encoder = {
4301 4302
    .name           = "wmv1",
    .type           = AVMEDIA_TYPE_VIDEO,
4303
    .id             = AV_CODEC_ID_WMV1,
4304
    .priv_data_size = sizeof(MpegEncContext),
4305
    .init           = ff_MPV_encode_init,
4306
    .encode2        = ff_MPV_encode_picture,
4307
    .close          = ff_MPV_encode_end,
4308
    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
4309
    .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
4310
    .priv_class     = &wmv1_class,
4311
};