static av_cold int h261_decode_init(AVCodecContext *avctx) { H261Context *h= avctx->priv_data; MpegEncContext * const s = &h->s; // set defaults MPV_decode_defaults(s); s->avctx = avctx; s->width = s->avctx->coded_width; s->height = s->avctx->coded_height; s->codec_id = s->avctx->codec->id; s->out_format = FMT_H261; s->low_delay= 1; avctx->pix_fmt= PIX_FMT_YUV420P; s->codec_id= avctx->codec->id; h261_decode_init_vlc(h); h->gob_start_code_skipped = 0; return 0; }
av_cold int ff_h263_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; s->avctx = avctx; s->out_format = FMT_H263; s->width = avctx->coded_width; s->height = avctx->coded_height; s->workaround_bugs= avctx->workaround_bugs; // set defaults MPV_decode_defaults(s); s->quant_precision=5; s->decode_mb= ff_h263_decode_mb; s->low_delay= 1; avctx->pix_fmt= avctx->get_format(avctx, avctx->codec->pix_fmts); s->unrestricted_mv= 1; /* select sub codec */ switch(avctx->codec->id) { case CODEC_ID_H263: s->unrestricted_mv= 0; avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; break; case CODEC_ID_MPEG4: break; case CODEC_ID_MSMPEG4V1: s->h263_pred = 1; s->msmpeg4_version=1; break; case CODEC_ID_MSMPEG4V2: s->h263_pred = 1; s->msmpeg4_version=2; break; case CODEC_ID_MSMPEG4V3: s->h263_pred = 1; s->msmpeg4_version=3; break; case CODEC_ID_WMV1: s->h263_pred = 1; s->msmpeg4_version=4; break; case CODEC_ID_WMV2: s->h263_pred = 1; s->msmpeg4_version=5; break; case CODEC_ID_VC1: case CODEC_ID_WMV3: case CODEC_ID_VC1IMAGE: case CODEC_ID_WMV3IMAGE: s->h263_pred = 1; s->msmpeg4_version=6; avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; break; case CODEC_ID_H263I: break; case CODEC_ID_FLV1: s->h263_flv = 1; break; default: return -1; } s->codec_id= avctx->codec->id; avctx->hwaccel= ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt); /* for h263, we allocate the images after having read the header */ if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4) if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); return 0; }
static av_cold int rv10_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; static int done=0; MPV_decode_defaults(s); s->avctx= avctx; s->out_format = FMT_H263; s->codec_id= avctx->codec_id; s->width = avctx->width; s->height = avctx->height; s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1; avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4); if (avctx->sub_id == 0x10000000) { s->rv10_version= 0; s->low_delay=1; } else if (avctx->sub_id == 0x10002000) { s->rv10_version= 3; s->low_delay=1; s->obmc=1; } else if (avctx->sub_id == 0x10003000) { s->rv10_version= 3; s->low_delay=1; } else if (avctx->sub_id == 0x10003001) { s->rv10_version= 3; s->low_delay=1; } else if ( avctx->sub_id == 0x20001000 || (avctx->sub_id >= 0x20100000 && avctx->sub_id < 0x201a0000)) { s->low_delay=1; } else if ( avctx->sub_id == 0x30202002 || avctx->sub_id == 0x30203002 || (avctx->sub_id >= 0x20200002 && avctx->sub_id < 0x20300000)) { s->low_delay=0; s->avctx->has_b_frames=1; } else av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id); if(avctx->debug & FF_DEBUG_PICT_INFO){ av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1); } avctx->pix_fmt = PIX_FMT_YUV420P; if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); /* init rv vlc */ if (!done) { init_vlc(&rv_dc_lum, DC_VLC_BITS, 256, rv_lum_bits, 1, 1, rv_lum_code, 2, 2, 1); init_vlc(&rv_dc_chrom, DC_VLC_BITS, 256, rv_chrom_bits, 1, 1, rv_chrom_code, 2, 2, 1); done = 1; } return 0; }
static int rv10_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; static int done=0; MPV_decode_defaults(s); s->avctx= avctx; s->out_format = FMT_H263; s->codec_id= avctx->codec_id; s->width = avctx->width; s->height = avctx->height; s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1; avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4); switch(avctx->sub_id){ case 0x10000000: s->rv10_version= 0; s->low_delay=1; break; case 0x10002000: s->rv10_version= 3; s->low_delay=1; s->obmc=1; break; case 0x10003000: s->rv10_version= 3; s->low_delay=1; break; case 0x10003001: s->rv10_version= 3; s->low_delay=1; break; case 0x20001000: /* real rv20 decoder fail on this id */ /*case 0x20100001: case 0x20101001: case 0x20103001:*/ case 0x20100000 ... 0x2019ffff: s->low_delay=1; break; /*case 0x20200002: case 0x20201002: case 0x20203002:*/ case 0x20200002 ... 0x202fffff: case 0x30202002: case 0x30203002: s->low_delay=0; s->avctx->has_b_frames=1; break; default: av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id); } if(avctx->debug & FF_DEBUG_PICT_INFO){ av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1); } avctx->pix_fmt = PIX_FMT_YUV420P; if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); /* init rv vlc */ if (!done) { init_vlc(&rv_dc_lum, DC_VLC_BITS, 256, rv_lum_bits, 1, 1, rv_lum_code, 2, 2, 1); init_vlc(&rv_dc_chrom, DC_VLC_BITS, 256, rv_chrom_bits, 1, 1, rv_chrom_code, 2, 2, 1); done = 1; } return 0; }
static av_cold int rv10_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; static int done=0; int major_ver, minor_ver, micro_ver; if (avctx->extradata_size < 8) { av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n"); return -1; } MPV_decode_defaults(s); s->avctx= avctx; s->out_format = FMT_H263; s->codec_id= avctx->codec_id; s->orig_width = s->width = avctx->coded_width; s->orig_height= s->height = avctx->coded_height; s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1; avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4); major_ver = RV_GET_MAJOR_VER(avctx->sub_id); minor_ver = RV_GET_MINOR_VER(avctx->sub_id); micro_ver = RV_GET_MICRO_VER(avctx->sub_id); s->low_delay = 1; switch (major_ver) { case 1: s->rv10_version = micro_ver ? 3 : 1; s->obmc = micro_ver == 2; break; case 2: if (minor_ver >= 2) { s->low_delay = 0; s->avctx->has_b_frames = 1; } break; default: av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id); av_log_missing_feature(avctx, "RV1/2 version", 1); return AVERROR_PATCHWELCOME; } if(avctx->debug & FF_DEBUG_PICT_INFO) { av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1); } avctx->pix_fmt = PIX_FMT_YUV420P; if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); /* init rv vlc */ if (!done) { INIT_VLC_STATIC(&rv_dc_lum, DC_VLC_BITS, 256, rv_lum_bits, 1, 1, rv_lum_code, 2, 2, 16384); INIT_VLC_STATIC(&rv_dc_chrom, DC_VLC_BITS, 256, rv_chrom_bits, 1, 1, rv_chrom_code, 2, 2, 16388); done = 1; } return 0; }
av_cold int ff_h263_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; s->avctx = avctx; s->out_format = FMT_H263; s->width = avctx->coded_width; s->height = avctx->coded_height; s->workaround_bugs= avctx->workaround_bugs; // set defaults MPV_decode_defaults(s); s->quant_precision=5; s->decode_mb= ff_h263_decode_mb; s->low_delay= 1; avctx->pix_fmt= PIX_FMT_YUV420P; /* ffdshow custom code */ s->unrestricted_mv= 1; /* select sub codec */ switch(avctx->codec->id) { case CODEC_ID_H263: s->unrestricted_mv= 0; break; case CODEC_ID_MPEG4: s->decode_mb= ff_mpeg4_decode_mb; s->time_increment_bits = 4; /* default value for broken headers */ s->h263_pred = 1; s->low_delay = 0; //default, might be overriden in the vol header during header parsing break; case CODEC_ID_MSMPEG4V1: s->h263_msmpeg4 = 1; s->h263_pred = 1; s->msmpeg4_version=1; break; case CODEC_ID_MSMPEG4V2: s->h263_msmpeg4 = 1; s->h263_pred = 1; s->msmpeg4_version=2; break; case CODEC_ID_MSMPEG4V3: s->h263_msmpeg4 = 1; s->h263_pred = 1; s->msmpeg4_version=3; break; case CODEC_ID_WMV1: s->h263_msmpeg4 = 1; s->h263_pred = 1; s->msmpeg4_version=4; break; case CODEC_ID_WMV2: s->h263_msmpeg4 = 1; s->h263_pred = 1; s->msmpeg4_version=5; break; case CODEC_ID_VC1: case CODEC_ID_WMV3: s->h263_msmpeg4 = 1; s->h263_pred = 1; s->msmpeg4_version=6; break; case CODEC_ID_H263I: break; case CODEC_ID_FLV1: s->h263_flv = 1; break; default: return -1; } s->codec_id= avctx->codec->id; /* for h263, we allocate the images after having read the header */ if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4) if (MPV_common_init(s) < 0) return -1; if (CONFIG_MSMPEG4_DECODER && s->h263_msmpeg4) ff_msmpeg4_decode_init(s); else h263_decode_init_vlc(s); return 0; }