/* * Interface to xvidcore for MPEG-4 encoding * Copyright (c) 2004 Adam Thayer <krevnik@comcast.net> * * 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 */ /** * @file * Interface to xvidcore for MPEG-4 compliant encoding. * @author Adam Thayer (krevnik@comcast.net) */ #include <stdio.h> #include <string.h> #include <xvid.h> #include "libavutil/avassert.h" #include "libavutil/cpu.h" #include "libavutil/file.h" #include "libavutil/internal.h" #include "libavutil/intreadwrite.h" #include "libavutil/mathematics.h" #include "libavutil/mem.h" #include "libavutil/opt.h" #include "avcodec.h" #include "internal.h" #include "libxvid.h" #include "mpegutils.h" #if HAVE_UNISTD_H #include <unistd.h> #endif #if HAVE_IO_H #include <io.h> #endif /** * Buffer management macros. */ #define BUFFER_SIZE 1024 #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x)) #define BUFFER_CAT(x) (&((x)[strlen(x)])) /** * Structure for the private Xvid context. * This stores all the private context for the codec. */ struct xvid_context { AVClass *class; void *encoder_handle; /**< Handle for Xvid encoder */ int xsize; /**< Frame x size */ int ysize; /**< Frame y size */ int vop_flags; /**< VOP flags for Xvid encoder */ int vol_flags; /**< VOL flags for Xvid encoder */ int me_flags; /**< Motion Estimation flags */ int qscale; /**< Do we use constant scale? */ int quicktime_format; /**< Are we in a QT-based format? */ char *twopassbuffer; /**< Character buffer for two-pass */ char *old_twopassbuffer; /**< Old character buffer (two-pass) */ char *twopassfile; /**< second pass temp file name */ int twopassfd; unsigned char *intra_matrix; /**< P-Frame Quant Matrix */ unsigned char *inter_matrix; /**< I-Frame Quant Matrix */ int lumi_aq; /**< Lumi masking as an aq method */ int variance_aq; /**< Variance adaptive quantization */ int ssim; /**< SSIM information display mode */ int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */ int gmc; int me_quality; /**< Motion estimation quality. 0: fast 6: best. */ int mpeg_quant; /**< Quantization type. 0: H.263, 1: MPEG */ }; /** * Structure for the private first-pass plugin. */ struct xvid_ff_pass1 { int version; /**< Xvid version */ struct xvid_context *context; /**< Pointer to private context */ }; static int xvid_encode_close(AVCodecContext *avctx); static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *picture, int *got_packet); /* * Xvid 2-Pass Kludge Section * * Xvid's default 2-pass doesn't allow us to create data as we need to, so * this section spends time replacing the first pass plugin so we can write * statistic information as libavcodec requests in. We have another kludge * that allows us to pass data to the second pass in Xvid without a custom * rate-control plugin. */ /** * Initialize the two-pass plugin and context. * * @param param Input construction parameter structure * @param handle Private context handle * @return Returns XVID_ERR_xxxx on failure, or 0 on success. */ static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle) { struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *) param->param; char *log = x->context->twopassbuffer; /* Do a quick bounds check */ if (!log) return XVID_ERR_FAIL; /* We use snprintf() */ /* This is because we can safely prevent a buffer overflow */ log[0] = 0; snprintf(log, BUFFER_REMAINING(log), "# ffmpeg 2-pass log file, using xvid codec\n"); snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log), "# Do not modify. libxvidcore version: %d.%d.%d\n\n", XVID_VERSION_MAJOR(XVID_VERSION), XVID_VERSION_MINOR(XVID_VERSION), XVID_VERSION_PATCH(XVID_VERSION)); *handle = x->context; return 0; } /** * Destroy the two-pass plugin context. * * @param ref Context pointer for the plugin * @param param Destroy context * @return Returns 0, success guaranteed */ static int xvid_ff_2pass_destroy(struct xvid_context *ref, xvid_plg_destroy_t *param) { /* Currently cannot think of anything to do on destruction */ /* Still, the framework should be here for reference/use */ if (ref->twopassbuffer) ref->twopassbuffer[0] = 0; return 0; } /** * Enable fast encode mode during the first pass. * * @param ref Context pointer for the plugin * @param param Frame data * @return Returns 0, success guaranteed */ static int xvid_ff_2pass_before(struct xvid_context *ref, xvid_plg_data_t *param) { int motion_remove; int motion_replacements; int vop_remove; /* Nothing to do here, result is changed too much */ if (param->zone && param->zone->mode == XVID_ZONE_QUANT) return 0; /* We can implement a 'turbo' first pass mode here */ param->quant = 2; /* Init values */ motion_remove = ~XVID_ME_CHROMA_PVOP & ~XVID_ME_CHROMA_BVOP & ~XVID_ME_EXTSEARCH16 & ~XVID_ME_ADVANCEDDIAMOND16; motion_replacements = XVID_ME_FAST_MODEINTERPOLATE | XVID_ME_SKIP_DELTASEARCH | XVID_ME_FASTREFINE16 | XVID_ME_BFRAME_EARLYSTOP; vop_remove = ~XVID_VOP_MODEDECISION_RD & ~XVID_VOP_FAST_MODEDECISION_RD & ~XVID_VOP_TRELLISQUANT & ~XVID_VOP_INTER4V & ~XVID_VOP_HQACPRED; param->vol_flags &= ~XVID_VOL_GMC; param->vop_flags &= vop_remove; param->motion_flags &= motion_remove; param->motion_flags |= motion_replacements; return 0; } /** * Capture statistic data and write it during first pass. * * @param ref Context pointer for the plugin * @param param Statistic data * @return Returns XVID_ERR_xxxx on failure, or 0 on success */ static int xvid_ff_2pass_after(struct xvid_context *ref, xvid_plg_data_t *param) { char *log = ref->twopassbuffer; const char *frame_types = " ipbs"; char frame_type; /* Quick bounds check */ if (!log) return XVID_ERR_FAIL; /* Convert the type given to us into a character */ if (param->type < 5 && param->type > 0) frame_type = frame_types[param->type]; else return XVID_ERR_FAIL; snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log), "%c %d %d %d %d %d %d\n", frame_type, param->stats.quant, param->stats.kblks, param->stats.mblks, param->stats.ublks, param->stats.length, param->stats.hlength); return 0; } /** * Dispatch function for our custom plugin. * This handles the dispatch for the Xvid plugin. It passes data * on to other functions for actual processing. * * @param ref Context pointer for the plugin * @param cmd The task given for us to complete * @param p1 First parameter (varies) * @param p2 Second parameter (varies) * @return Returns XVID_ERR_xxxx on failure, or 0 on success */ static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2) { switch (cmd) { case XVID_PLG_INFO: case XVID_PLG_FRAME: return 0; case XVID_PLG_BEFORE: return xvid_ff_2pass_before(ref, p1); case XVID_PLG_CREATE: return xvid_ff_2pass_create(p1, p2); case XVID_PLG_AFTER: return xvid_ff_2pass_after(ref, p1); case XVID_PLG_DESTROY: return xvid_ff_2pass_destroy(ref, p1); default: return XVID_ERR_FAIL; } } /** * Routine to create a global VO/VOL header for MP4 container. * What we do here is extract the header from the Xvid bitstream * as it is encoded. We also strip the repeated headers from the * bitstream when a global header is requested for MPEG-4 ISO * compliance. * * @param avctx AVCodecContext pointer to context * @param frame Pointer to encoded frame data * @param header_len Length of header to search * @param frame_len Length of encoded frame data * @return Returns new length of frame data */ static int xvid_strip_vol_header(AVCodecContext *avctx, AVPacket *pkt, unsigned int header_len, unsigned int frame_len) { int vo_len = 0, i; for (i = 0; i < header_len - 3; i++) { if (pkt->data[i] == 0x00 && pkt->data[i + 1] == 0x00 && pkt->data[i + 2] == 0x01 && pkt->data[i + 3] == 0xB6) { vo_len = i; break; } } if (vo_len > 0) { /* We need to store the header, so extract it */ if (!avctx->extradata) { avctx->extradata = av_malloc(vo_len); if (!avctx->extradata) return AVERROR(ENOMEM); memcpy(avctx->extradata, pkt->data, vo_len); avctx->extradata_size = vo_len; } /* Less dangerous now, memmove properly copies the two * chunks of overlapping data */ memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len); pkt->size = frame_len - vo_len; } return 0; } /** * Routine to correct a possibly erroneous framerate being fed to us. * Xvid currently chokes on framerates where the ticks per frame is * extremely large. This function works to correct problems in this area * by estimating a new framerate and taking the simpler fraction of * the two presented. * * @param avctx Context that contains the framerate to correct. */ static void xvid_correct_framerate(AVCodecContext *avctx) { int frate, fbase; int est_frate, est_fbase; int gcd; float est_fps, fps; frate = avctx->time_base.den; fbase = avctx->time_base.num; gcd = av_gcd(frate, fbase); if (gcd > 1) { frate /= gcd; fbase /= gcd; } if (frate <= 65000 && fbase <= 65000) { avctx->time_base.den = frate; avctx->time_base.num = fbase; return; } fps = (float) frate / (float) fbase; est_fps = roundf(fps * 1000.0) / 1000.0; est_frate = (int) est_fps; if (est_fps > (int) est_fps) { est_frate = (est_frate + 1) * 1000; est_fbase = (int) roundf((float) est_frate / est_fps); } else est_fbase = 1; gcd = av_gcd(est_frate, est_fbase); if (gcd > 1) { est_frate /= gcd; est_fbase /= gcd; } if (fbase > est_fbase) { avctx->time_base.den = est_frate; avctx->time_base.num = est_fbase; av_log(avctx, AV_LOG_DEBUG, "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n", est_fps, (((est_fps - fps) / fps) * 100.0)); } else { avctx->time_base.den = frate; avctx->time_base.num = fbase; } } static av_cold int xvid_encode_init(AVCodecContext *avctx) { int xerr, i, ret = -1; int xvid_flags = avctx->flags; struct xvid_context *x = avctx->priv_data; uint16_t *intra, *inter; int fd; xvid_plugin_single_t single = { 0 }; struct xvid_ff_pass1 rc2pass1 = { 0 }; xvid_plugin_2pass2_t rc2pass2 = { 0 }; xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */ xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */ xvid_plugin_ssim_t ssim = { 0 }; xvid_gbl_init_t xvid_gbl_init = { 0 }; xvid_enc_create_t xvid_enc_create = { 0 }; xvid_enc_plugin_t plugins[4]; x->twopassfd = -1; /* Bring in VOP flags from ffmpeg command-line */ x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */ if (xvid_flags & AV_CODEC_FLAG_4MV) x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */ if (avctx->trellis) x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */ if (xvid_flags & AV_CODEC_FLAG_AC_PRED) x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */ if (xvid_flags & AV_CODEC_FLAG_GRAY) x->vop_flags |= XVID_VOP_GREYSCALE; /* Decide which ME quality setting to use */ x->me_flags = 0; switch (x->me_quality) { case 6: case 5: x->me_flags |= XVID_ME_EXTSEARCH16 | XVID_ME_EXTSEARCH8; case 4: case 3: x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 | XVID_ME_HALFPELREFINE8 | XVID_ME_CHROMA_PVOP | XVID_ME_CHROMA_BVOP; case 2: case 1: x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 | XVID_ME_HALFPELREFINE16; } /* Decide how we should decide blocks */ switch (avctx->mb_decision) { case 2: x->vop_flags |= XVID_VOP_MODEDECISION_RD; x->me_flags |= XVID_ME_HALFPELREFINE8_RD | XVID_ME_QUARTERPELREFINE8_RD | XVID_ME_EXTSEARCH_RD | XVID_ME_CHECKPREDICTION_RD; case 1: if (!(x->vop_flags & XVID_VOP_MODEDECISION_RD)) x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD; x->me_flags |= XVID_ME_HALFPELREFINE16_RD | XVID_ME_QUARTERPELREFINE16_RD; default: break; } /* Bring in VOL flags from ffmpeg command-line */ x->vol_flags = 0; if (x->gmc) { x->vol_flags |= XVID_VOL_GMC; x->me_flags |= XVID_ME_GME_REFINE; } if (xvid_flags & AV_CODEC_FLAG_QPEL) { x->vol_flags |= XVID_VOL_QUARTERPEL; x->me_flags |= XVID_ME_QUARTERPELREFINE16; if (x->vop_flags & XVID_VOP_INTER4V) x->me_flags |= XVID_ME_QUARTERPELREFINE8; } xvid_gbl_init.version = XVID_VERSION; xvid_gbl_init.debug = 0; xvid_gbl_init.cpu_flags = 0; /* Initialize */ xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL); /* Create the encoder reference */ xvid_enc_create.version = XVID_VERSION; /* Store the desired frame size */ xvid_enc_create.width = x->xsize = avctx->width; xvid_enc_create.height = x->ysize = avctx->height; /* Xvid can determine the proper profile to use */ /* xvid_enc_create.profile = XVID_PROFILE_S_L3; */ /* We don't use zones */ xvid_enc_create.zones = NULL; xvid_enc_create.num_zones = 0; xvid_enc_create.num_threads = avctx->thread_count; #if (XVID_VERSION <= 0x010303) && (XVID_VERSION >= 0x010300) /* workaround for a bug in libxvidcore */ if (avctx->height <= 16) { if (avctx->thread_count < 2) { xvid_enc_create.num_threads = 0; } else { av_log(avctx, AV_LOG_ERROR, "Too small height for threads > 1."); return AVERROR(EINVAL); } } #endif xvid_enc_create.plugins = plugins; xvid_enc_create.num_plugins = 0; /* Initialize Buffers */ x->twopassbuffer = NULL; x->old_twopassbuffer = NULL; x->twopassfile = NULL; if (xvid_flags & AV_CODEC_FLAG_PASS1) { rc2pass1.version = XVID_VERSION; rc2pass1.context = x; x->twopassbuffer = av_malloc(BUFFER_SIZE); x->old_twopassbuffer = av_malloc(BUFFER_SIZE); if (!x->twopassbuffer || !x->old_twopassbuffer) { av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot allocate 2-pass log buffers\n"); return AVERROR(ENOMEM); } x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0; plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass; plugins[xvid_enc_create.num_plugins].param = &rc2pass1; xvid_enc_create.num_plugins++; } else if (xvid_flags & AV_CODEC_FLAG_PASS2) { rc2pass2.version = XVID_VERSION; rc2pass2.bitrate = avctx->bit_rate; fd = avpriv_tempfile("xvidff.", &x->twopassfile, 0, avctx); if (fd < 0) { av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n"); return fd; } x->twopassfd = fd; if (!avctx->stats_in) { av_log(avctx, AV_LOG_ERROR, "Xvid: No 2-pass information loaded for second pass\n"); return AVERROR(EINVAL); } ret = write(fd, avctx->stats_in, strlen(avctx->stats_in)); if (ret == -1) ret = AVERROR(errno); else if (strlen(avctx->stats_in) > ret) { av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write to 2-pass pipe\n"); ret = AVERROR(EIO); } if (ret < 0) return ret; rc2pass2.filename = x->twopassfile; plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2; plugins[xvid_enc_create.num_plugins].param = &rc2pass2; xvid_enc_create.num_plugins++; } else if (!(xvid_flags & AV_CODEC_FLAG_QSCALE)) { /* Single Pass Bitrate Control! */ single.version = XVID_VERSION; single.bitrate = avctx->bit_rate; plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single; plugins[xvid_enc_create.num_plugins].param = &single; xvid_enc_create.num_plugins++; } if (avctx->lumi_masking != 0.0) x->lumi_aq = 1; /* Luminance Masking */ if (x->lumi_aq) { masking_l.method = 0; plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking; /* The old behavior is that when avctx->lumi_masking is specified, * plugins[...].param = NULL. Trying to keep the old behavior here. */ plugins[xvid_enc_create.num_plugins].param = avctx->lumi_masking ? NULL : &masking_l; xvid_enc_create.num_plugins++; } /* Variance AQ */ if (x->variance_aq) { masking_v.method = 1; plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking; plugins[xvid_enc_create.num_plugins].param = &masking_v; xvid_enc_create.num_plugins++; } if (x->lumi_aq && x->variance_aq ) av_log(avctx, AV_LOG_INFO, "Both lumi_aq and variance_aq are enabled. The resulting quality" "will be the worse one of the two effects made by the AQ.\n"); /* SSIM */ if (x->ssim) { plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim; ssim.b_printstat = x->ssim == 2; ssim.acc = x->ssim_acc; ssim.cpu_flags = xvid_gbl_init.cpu_flags; ssim.b_visualize = 0; plugins[xvid_enc_create.num_plugins].param = &ssim; xvid_enc_create.num_plugins++; } /* Frame Rate and Key Frames */ xvid_correct_framerate(avctx); xvid_enc_create.fincr = avctx->time_base.num; xvid_enc_create.fbase = avctx->time_base.den; if (avctx->gop_size > 0) xvid_enc_create.max_key_interval = avctx->gop_size; else xvid_enc_create.max_key_interval = 240; /* Xvid's best default */ /* Quants */ if (xvid_flags & AV_CODEC_FLAG_QSCALE) x->qscale = 1; else x->qscale = 0; xvid_enc_create.min_quant[0] = avctx->qmin; xvid_enc_create.min_quant[1] = avctx->qmin; xvid_enc_create.min_quant[2] = avctx->qmin; xvid_enc_create.max_quant[0] = avctx->qmax; xvid_enc_create.max_quant[1] = avctx->qmax; xvid_enc_create.max_quant[2] = avctx->qmax; /* Quant Matrices */ x->intra_matrix = x->inter_matrix = NULL; #if FF_API_PRIVATE_OPT FF_DISABLE_DEPRECATION_WARNINGS if (avctx->mpeg_quant) x->mpeg_quant = avctx->mpeg_quant; FF_ENABLE_DEPRECATION_WARNINGS #endif if (x->mpeg_quant) x->vol_flags |= XVID_VOL_MPEGQUANT; if ((avctx->intra_matrix || avctx->inter_matrix)) { x->vol_flags |= XVID_VOL_MPEGQUANT; if (avctx->intra_matrix) { intra = avctx->intra_matrix; x->intra_matrix = av_malloc(sizeof(unsigned char) * 64); if (!x->intra_matrix) return AVERROR(ENOMEM); } else intra = NULL; if (avctx->inter_matrix) { inter = avctx->inter_matrix; x->inter_matrix = av_malloc(sizeof(unsigned char) * 64); if (!x->inter_matrix) return AVERROR(ENOMEM); } else inter = NULL; for (i = 0; i < 64; i++) { if (intra) x->intra_matrix[i] = (unsigned char) intra[i]; if (inter) x->inter_matrix[i] = (unsigned char) inter[i]; } } /* Misc Settings */ xvid_enc_create.frame_drop_ratio = 0; xvid_enc_create.global = 0; if (xvid_flags & AV_CODEC_FLAG_CLOSED_GOP) xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP; /* Determines which codec mode we are operating in */ avctx->extradata = NULL; avctx->extradata_size = 0; if (xvid_flags & AV_CODEC_FLAG_GLOBAL_HEADER) { /* In this case, we are claiming to be MPEG-4 */ x->quicktime_format = 1; avctx->codec_id = AV_CODEC_ID_MPEG4; } else { /* We are claiming to be Xvid */ x->quicktime_format = 0; if (!avctx->codec_tag) avctx->codec_tag = AV_RL32("xvid"); } /* Bframes */ xvid_enc_create.max_bframes = avctx->max_b_frames; xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset; xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor; if (avctx->max_b_frames > 0 && !x->quicktime_format) xvid_enc_create.global |= XVID_GLOBAL_PACKED; av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins)); /* Encode a dummy frame to get the extradata immediately */ if (x->quicktime_format) { AVFrame *picture; AVPacket packet = {0}; int size, got_packet, ret; av_init_packet(&packet); picture = av_frame_alloc(); if (!picture) return AVERROR(ENOMEM); xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL); if( xerr ) { av_frame_free(&picture); av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n"); return AVERROR_EXTERNAL; } x->encoder_handle = xvid_enc_create.handle; size = ((avctx->width + 1) & ~1) * ((avctx->height + 1) & ~1); picture->data[0] = av_malloc(size + size / 2); if (!picture->data[0]) { av_frame_free(&picture); return AVERROR(ENOMEM); } picture->data[1] = picture->data[0] + size; picture->data[2] = picture->data[1] + size / 4; memset(picture->data[0], 0, size); memset(picture->data[1], 128, size / 2); ret = xvid_encode_frame(avctx, &packet, picture, &got_packet); if (!ret && got_packet) av_packet_unref(&packet); av_free(picture->data[0]); av_frame_free(&picture); xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL); } /* Create encoder context */ xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL); if (xerr) { av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n"); return AVERROR_EXTERNAL; } x->encoder_handle = xvid_enc_create.handle; return 0; } static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *picture, int *got_packet) { int xerr, i, ret, user_packet = !!pkt->data; struct xvid_context *x = avctx->priv_data; int mb_width = (avctx->width + 15) / 16; int mb_height = (avctx->height + 15) / 16; char *tmp; xvid_enc_frame_t xvid_enc_frame = { 0 }; xvid_enc_stats_t xvid_enc_stats = { 0 }; if ((ret = ff_alloc_packet2(avctx, pkt, mb_width*(int64_t)mb_height*MAX_MB_BYTES + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 0) return ret; /* Start setting up the frame */ xvid_enc_frame.version = XVID_VERSION; xvid_enc_stats.version = XVID_VERSION; /* Let Xvid know where to put the frame. */ xvid_enc_frame.bitstream = pkt->data; xvid_enc_frame.length = pkt->size; /* Initialize input image fields */ if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) { av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420P not supported\n"); return AVERROR(EINVAL); } xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */ for (i = 0; i < 4; i++) { xvid_enc_frame.input.plane[i] = picture->data[i]; xvid_enc_frame.input.stride[i] = picture->linesize[i]; } /* Encoder Flags */ xvid_enc_frame.vop_flags = x->vop_flags; xvid_enc_frame.vol_flags = x->vol_flags; xvid_enc_frame.motion = x->me_flags; xvid_enc_frame.type = picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP : picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP : picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP : XVID_TYPE_AUTO; /* Pixel aspect ratio setting */ if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.num > 255 || avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) { av_log(avctx, AV_LOG_WARNING, "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n", avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den); av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255); } xvid_enc_frame.par = XVID_PAR_EXT; xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num; xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den; /* Quant Setting */ if (x->qscale) xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA; else xvid_enc_frame.quant = 0; /* Matrices */ xvid_enc_frame.quant_intra_matrix = x->intra_matrix; xvid_enc_frame.quant_inter_matrix = x->inter_matrix; /* Encode */ xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE, &xvid_enc_frame, &xvid_enc_stats); /* Two-pass log buffer swapping */ avctx->stats_out = NULL; if (x->twopassbuffer) { tmp = x->old_twopassbuffer; x->old_twopassbuffer = x->twopassbuffer; x->twopassbuffer = tmp; x->twopassbuffer[0] = 0; if (x->old_twopassbuffer[0] != 0) { avctx->stats_out = x->old_twopassbuffer; } } if (xerr > 0) { int pict_type; *got_packet = 1; if (xvid_enc_stats.type == XVID_TYPE_PVOP) pict_type = AV_PICTURE_TYPE_P; else if (xvid_enc_stats.type == XVID_TYPE_BVOP) pict_type = AV_PICTURE_TYPE_B; else if (xvid_enc_stats.type == XVID_TYPE_SVOP) pict_type = AV_PICTURE_TYPE_S; else pict_type = AV_PICTURE_TYPE_I; #if FF_API_CODED_FRAME FF_DISABLE_DEPRECATION_WARNINGS avctx->coded_frame->pict_type = pict_type; avctx->coded_frame->quality = xvid_enc_stats.quant * FF_QP2LAMBDA; FF_ENABLE_DEPRECATION_WARNINGS #endif ff_side_data_set_encoder_stats(pkt, xvid_enc_stats.quant * FF_QP2LAMBDA, NULL, 0, pict_type); if (xvid_enc_frame.out_flags & XVID_KEYFRAME) { #if FF_API_CODED_FRAME FF_DISABLE_DEPRECATION_WARNINGS avctx->coded_frame->key_frame = 1; FF_ENABLE_DEPRECATION_WARNINGS #endif pkt->flags |= AV_PKT_FLAG_KEY; if (x->quicktime_format) return xvid_strip_vol_header(avctx, pkt, xvid_enc_stats.hlength, xerr); } else { #if FF_API_CODED_FRAME FF_DISABLE_DEPRECATION_WARNINGS avctx->coded_frame->key_frame = 0; FF_ENABLE_DEPRECATION_WARNINGS #endif } pkt->size = xerr; return 0; } else { if (!user_packet) av_packet_unref(pkt); if (!xerr) return 0; av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr); return AVERROR_EXTERNAL; } } static av_cold int xvid_encode_close(AVCodecContext *avctx) { struct xvid_context *x = avctx->priv_data; if (x->encoder_handle) { xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL); x->encoder_handle = NULL; } av_freep(&avctx->extradata); if (x->twopassbuffer) { av_freep(&x->twopassbuffer); av_freep(&x->old_twopassbuffer); avctx->stats_out = NULL; } if (x->twopassfd>=0) { unlink(x->twopassfile); close(x->twopassfd); x->twopassfd = -1; } av_freep(&x->twopassfile); av_freep(&x->intra_matrix); av_freep(&x->inter_matrix); return 0; } #define OFFSET(x) offsetof(struct xvid_context, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "ssim" }, { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" }, { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" }, { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "ssim" }, { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE }, { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { "me_quality", "Motion estimation quality", OFFSET(me_quality), AV_OPT_TYPE_INT, { .i64 = 4 }, 0, 6, VE }, { "mpeg_quant", "Use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, { NULL }, }; static const AVClass xvid_class = { .class_name = "libxvid", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; AVCodec ff_libxvid_encoder = { .name = "libxvid", .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_MPEG4, .priv_data_size = sizeof(struct xvid_context), .init = xvid_encode_init, .encode2 = xvid_encode_frame, .close = xvid_encode_close, .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, .priv_class = &xvid_class, .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, .wrapper_name = "libxvid", };