r210enc.c 3.39 KB
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/*
 * R210 encoder
 *
 * Copyright (c) 2012 Paul B Mahol
 *
 * 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
 */

#include "avcodec.h"
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#include "internal.h"
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#include "bytestream.h"

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static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                        const AVFrame *pic, int *got_packet)
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{
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    int i, j, ret;
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    int aligned_width = FFALIGN(avctx->width,
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                                avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
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    int pad = (aligned_width - avctx->width) * 4;
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    uint8_t *src_line;
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    uint8_t *dst;
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    if ((ret = ff_alloc_packet2(avctx, pkt, 4 * aligned_width * avctx->height, 0)) < 0)
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        return ret;
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    src_line = pic->data[0];
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    dst = pkt->data;
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    for (i = 0; i < avctx->height; i++) {
        uint16_t *src = (uint16_t *)src_line;
        for (j = 0; j < avctx->width; j++) {
            uint32_t pixel;
            uint16_t r = *src++ >> 6;
            uint16_t g = *src++ >> 6;
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            uint16_t b = *src++ >> 6;
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            if (avctx->codec_id == AV_CODEC_ID_R210)
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                pixel = (r << 20) | (g << 10) | b;
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            else
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                pixel = (r << 22) | (g << 12) | (b << 2);
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            if (avctx->codec_id == AV_CODEC_ID_AVRP)
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                bytestream_put_le32(&dst, pixel);
            else
                bytestream_put_be32(&dst, pixel);
        }
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        memset(dst, 0, pad);
        dst += pad;
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        src_line += pic->linesize[0];
    }

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    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;
    return 0;
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}


#if CONFIG_R210_ENCODER
AVCodec ff_r210_encoder = {
    .name           = "r210",
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    .long_name      = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_R210,
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    .encode2        = encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
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    .capabilities   = AV_CODEC_CAP_INTRA_ONLY,
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};
#endif
#if CONFIG_R10K_ENCODER
AVCodec ff_r10k_encoder = {
    .name           = "r10k",
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    .long_name      = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_R10K,
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    .encode2        = encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
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    .capabilities   = AV_CODEC_CAP_INTRA_ONLY,
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};
#endif
#if CONFIG_AVRP_ENCODER
AVCodec ff_avrp_encoder = {
    .name           = "avrp",
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    .long_name      = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_AVRP,
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    .encode2        = encode_frame,
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    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB48, AV_PIX_FMT_NONE },
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    .capabilities   = AV_CODEC_CAP_INTRA_ONLY,
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};
#endif