static int rv10_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; static int done; // s->avctx= avctx; s->out_format = FMT_H263; s->width = avctx->width; s->height = avctx->height; s->h263_rv10 = 1; s->rv10_version = avctx->sub_id; if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); /* init rv vlc */ if (!done) { init_vlc(&rv_dc_lum, 9, 256, rv_lum_bits, 1, 1, rv_lum_code, 2, 2); init_vlc(&rv_dc_chrom, 9, 256, rv_chrom_bits, 1, 1, rv_chrom_code, 2, 2); done = 1; } return 0; }
static int rv10_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; static int done=0; s->avctx= avctx; s->out_format = FMT_H263; s->width = avctx->width; s->height = avctx->height; s->h263_rv10 = 1; switch(avctx->sub_id){ case 0x10000000: s->rv10_version= 0; s->h263_long_vectors=0; break; case 0x10003000: s->rv10_version= 3; s->h263_long_vectors=1; break; case 0x10003001: s->rv10_version= 3; s->h263_long_vectors=0; break; default: fprintf(stderr, "unknown header %X\n", avctx->sub_id); } //printf("ver:%X\n", avctx->sub_id); s->flags= avctx->flags; if (MPV_common_init(s) < 0) return -1; h263_decode_init_vlc(s); s->y_dc_scale_table= s->c_dc_scale_table= ff_mpeg1_dc_scale_table; s->progressive_sequence=1; /* init rv vlc */ if (!done) { init_vlc(&rv_dc_lum, DC_VLC_BITS, 256, rv_lum_bits, 1, 1, rv_lum_code, 2, 2); init_vlc(&rv_dc_chrom, DC_VLC_BITS, 256, rv_chrom_bits, 1, 1, rv_chrom_code, 2, 2); done = 1; } avctx->pix_fmt = PIX_FMT_YUV420P; 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 int h261_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; H261Context *h= avctx->priv_data; MpegEncContext *s = &h->s; int ret; AVFrame *pict = data; dprintf(avctx, "*****frame %d size=%d\n", avctx->frame_number, buf_size); dprintf(avctx, "bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]); s->flags= avctx->flags; s->flags2= avctx->flags2; h->gob_start_code_skipped=0; retry: init_get_bits(&s->gb, buf, buf_size*8); if(!s->context_initialized){ if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix return -1; } //we need to set current_picture_ptr before reading the header, otherwise we cannot store anyting im there if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){ int i= ff_find_unused_picture(s, 0); s->current_picture_ptr= &s->picture[i]; } ret = h261_decode_picture_header(h); /* skip if the header was thrashed */ if (ret < 0){ av_log(s->avctx, AV_LOG_ERROR, "header damaged\n"); return -1; } if (s->width != avctx->coded_width || s->height != avctx->coded_height){ ParseContext pc= s->parse_context; //FIXME move this demuxing hack to libavformat s->parse_context.buffer=0; MPV_common_end(s); s->parse_context= pc; } if (!s->context_initialized) { avcodec_set_dimensions(avctx, s->width, s->height); goto retry; } // for hurry_up==5 s->current_picture.pict_type= s->pict_type; s->current_picture.key_frame= s->pict_type == FF_I_TYPE; /* skip everything if we are in a hurry>=5 */ if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size); if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE) ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE) || avctx->skip_frame >= AVDISCARD_ALL) return get_consumed_bytes(s, buf_size); if(MPV_frame_start(s, avctx) < 0) return -1; ff_er_frame_start(s); /* decode each macroblock */ s->mb_x=0; s->mb_y=0; while(h->gob_number < (s->mb_height==18 ? 12 : 5)){ if(ff_h261_resync(h)<0) break; h261_decode_gob(h); } MPV_frame_end(s); assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type); assert(s->current_picture.pict_type == s->pict_type); *pict= *(AVFrame*)s->current_picture_ptr; ff_print_debug_info(s, pict); *data_size = sizeof(AVFrame); return get_consumed_bytes(s, buf_size); }
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 rv20_decode_picture_header(MpegEncContext *s) { int seq, mb_pos, i; #if 0 GetBitContext gb= s->gb; for(i=0; i<64; i++){ av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&gb)); if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); } av_log(s->avctx, AV_LOG_DEBUG, "\n"); #endif #if 0 av_log(s->avctx, AV_LOG_DEBUG, "%3dx%03d/%02Xx%02X ", s->width, s->height, s->width/4, s->height/4); for(i=0; i<s->avctx->extradata_size; i++){ av_log(s->avctx, AV_LOG_DEBUG, "%02X ", ((uint8_t*)s->avctx->extradata)[i]); if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); } av_log(s->avctx, AV_LOG_DEBUG, "\n"); #endif if(s->avctx->sub_id == 0x30202002 || s->avctx->sub_id == 0x30203002){ if (get_bits(&s->gb, 3)){ av_log(s->avctx, AV_LOG_ERROR, "unknown triplet set\n"); return -1; } } i= get_bits(&s->gb, 2); switch(i){ case 0: s->pict_type= FF_I_TYPE; break; case 1: s->pict_type= FF_I_TYPE; break; //hmm ... case 2: s->pict_type= FF_P_TYPE; break; case 3: s->pict_type= FF_B_TYPE; break; default: av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n"); return -1; } if(s->last_picture_ptr==NULL && s->pict_type==FF_B_TYPE){ av_log(s->avctx, AV_LOG_ERROR, "early B pix\n"); return -1; } if (get_bits1(&s->gb)){ av_log(s->avctx, AV_LOG_ERROR, "unknown bit set\n"); return -1; } s->qscale = get_bits(&s->gb, 5); if(s->qscale==0){ av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n"); return -1; } if(s->avctx->sub_id == 0x30203002){ if (get_bits1(&s->gb)){ av_log(s->avctx, AV_LOG_ERROR, "unknown bit2 set\n"); return -1; } } if(s->avctx->has_b_frames){ int f, new_w, new_h; int v= s->avctx->extradata_size >= 4 ? 7&((uint8_t*)s->avctx->extradata)[1] : 0; if (get_bits1(&s->gb)){ av_log(s->avctx, AV_LOG_ERROR, "unknown bit3 set\n"); // return -1; } seq= get_bits(&s->gb, 13)<<2; f= get_bits(&s->gb, av_log2(v)+1); if(f){ new_w= 4*((uint8_t*)s->avctx->extradata)[6+2*f]; new_h= 4*((uint8_t*)s->avctx->extradata)[7+2*f]; }else{ new_w= s->width; //FIXME wrong we of course must save the original in the context new_h= s->height; } if(new_w != s->width || new_h != s->height){ av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h); if (avcodec_check_dimensions(s->avctx, new_h, new_w) < 0) return -1; MPV_common_end(s); s->width = s->avctx->width = new_w; s->height = s->avctx->height= new_h; if (MPV_common_init(s) < 0) return -1; } if(s->avctx->debug & FF_DEBUG_PICT_INFO){ av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, v); } }else{ seq= get_bits(&s->gb, 8)*128; } // if(s->avctx->sub_id <= 0x20201002){ //0x20201002 definitely needs this mb_pos= ff_h263_decode_mba(s); /* }else{ mb_pos= get_bits(&s->gb, av_log2(s->mb_num-1)+1); s->mb_x= mb_pos % s->mb_width; s->mb_y= mb_pos / s->mb_width; }*/ //av_log(s->avctx, AV_LOG_DEBUG, "%d\n", seq); seq |= s->time &~0x7FFF; if(seq - s->time > 0x4000) seq -= 0x8000; if(seq - s->time < -0x4000) seq += 0x8000; if(seq != s->time){ if(s->pict_type!=FF_B_TYPE){ s->time= seq; s->pp_time= s->time - s->last_non_b_time; s->last_non_b_time= s->time; }else{ s->time= seq; s->pb_time= s->pp_time - (s->last_non_b_time - s->time); if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){ av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible from seeking? skipping current b frame\n"); return FRAME_SKIPPED; } ff_mpeg4_init_direct_mv(s); } } // printf("%d %d %d %d %d\n", seq, (int)s->time, (int)s->last_non_b_time, s->pp_time, s->pb_time); /*for(i=0; i<32; i++){ av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb)); } av_log(s->avctx, AV_LOG_DEBUG, "\n");*/ s->no_rounding= get_bits1(&s->gb); s->f_code = 1; s->unrestricted_mv = 1; s->h263_aic= s->pict_type == FF_I_TYPE; // s->alt_inter_vlc=1; // s->obmc=1; // s->umvplus=1; s->modified_quant=1; s->loop_filter=1; if(s->avctx->debug & FF_DEBUG_PICT_INFO){ av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n", seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding); } assert(s->pict_type != FF_B_TYPE || !s->low_delay); return s->mb_width*s->mb_height - mb_pos; }
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; }
static int rv20_decode_picture_header(MpegEncContext *s) { int seq, mb_pos, i; int rpr_bits; #if 0 GetBitContext gb= s->gb; for(i=0; i<64; i++) { av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&gb)); if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); } av_log(s->avctx, AV_LOG_DEBUG, "\n"); #endif #if 0 av_log(s->avctx, AV_LOG_DEBUG, "%3dx%03d/%02Xx%02X ", s->width, s->height, s->width/4, s->height/4); for(i=0; i<s->avctx->extradata_size; i++) { av_log(s->avctx, AV_LOG_DEBUG, "%02X ", ((uint8_t*)s->avctx->extradata)[i]); if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); } av_log(s->avctx, AV_LOG_DEBUG, "\n"); #endif i= get_bits(&s->gb, 2); switch(i) { case 0: s->pict_type= AV_PICTURE_TYPE_I; break; case 1: s->pict_type= AV_PICTURE_TYPE_I; break; //hmm ... case 2: s->pict_type= AV_PICTURE_TYPE_P; break; case 3: s->pict_type= AV_PICTURE_TYPE_B; break; default: av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n"); return -1; } if(s->last_picture_ptr==NULL && s->pict_type==AV_PICTURE_TYPE_B) { av_log(s->avctx, AV_LOG_ERROR, "early B pix\n"); return -1; } if (get_bits1(&s->gb)) { av_log(s->avctx, AV_LOG_ERROR, "reserved bit set\n"); return -1; } s->qscale = get_bits(&s->gb, 5); if(s->qscale==0) { av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n"); return -1; } if(RV_GET_MINOR_VER(s->avctx->sub_id) >= 2) s->loop_filter = get_bits1(&s->gb); if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1) seq = get_bits(&s->gb, 8) << 7; else seq = get_bits(&s->gb, 13) << 2; rpr_bits = s->avctx->extradata[1] & 7; if(rpr_bits) { int f, new_w, new_h; rpr_bits = FFMIN((rpr_bits >> 1) + 1, 3); f = get_bits(&s->gb, rpr_bits); if(f) { new_w= 4*((uint8_t*)s->avctx->extradata)[6+2*f]; new_h= 4*((uint8_t*)s->avctx->extradata)[7+2*f]; } else { new_w= s->orig_width ; new_h= s->orig_height; } if(new_w != s->width || new_h != s->height) { av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h); if (av_image_check_size(new_w, new_h, 0, s->avctx) < 0) return -1; MPV_common_end(s); avcodec_set_dimensions(s->avctx, new_w, new_h); s->width = new_w; s->height = new_h; if (MPV_common_init(s) < 0) return -1; } if(s->avctx->debug & FF_DEBUG_PICT_INFO) { av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, rpr_bits); } } mb_pos = ff_h263_decode_mba(s); //av_log(s->avctx, AV_LOG_DEBUG, "%d\n", seq); seq |= s->time &~0x7FFF; if(seq - s->time > 0x4000) seq -= 0x8000; if(seq - s->time < -0x4000) seq += 0x8000; if(seq != s->time) { if(s->pict_type!=AV_PICTURE_TYPE_B) { s->time= seq; s->pp_time= s->time - s->last_non_b_time; s->last_non_b_time= s->time; } else { s->time= seq; s->pb_time= s->pp_time - (s->last_non_b_time - s->time); if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0) { av_log(s->avctx, AV_LOG_DEBUG, "messed up order, possible from seeking? skipping current b frame\n"); return FRAME_SKIPPED; } ff_mpeg4_init_direct_mv(s); } } // printf("%d %d %d %d %d\n", seq, (int)s->time, (int)s->last_non_b_time, s->pp_time, s->pb_time); /*for(i=0; i<32; i++){ av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb)); } av_log(s->avctx, AV_LOG_DEBUG, "\n");*/ s->no_rounding= get_bits1(&s->gb); if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1 && s->pict_type == AV_PICTURE_TYPE_B) skip_bits(&s->gb, 5); // binary decoder reads 3+2 bits here but they don't seem to be used s->f_code = 1; s->unrestricted_mv = 1; s->h263_aic= s->pict_type == AV_PICTURE_TYPE_I; // s->alt_inter_vlc=1; // s->obmc=1; // s->umvplus=1; s->modified_quant=1; if(!s->avctx->lowres) s->loop_filter=1; if(s->avctx->debug & FF_DEBUG_PICT_INFO) { av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n", seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding); } assert(s->pict_type != AV_PICTURE_TYPE_B || !s->low_delay); return s->mb_width*s->mb_height - mb_pos; }
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; }
static int rv20_decode_picture_header(MpegEncContext *s) { int seq, mb_pos, i; int rpr_bits; #if 0 GetBitContext gb= s->gb; for(i=0; i<64; i++){ av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&gb)); if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); } av_log(s->avctx, AV_LOG_DEBUG, "\n"); #endif #if 0 av_log(s->avctx, AV_LOG_DEBUG, "%3dx%03d/%02Xx%02X ", s->width, s->height, s->width/4, s->height/4); for(i=0; i<s->avctx->extradata_size; i++){ av_log(s->avctx, AV_LOG_DEBUG, "%02X ", ((uint8_t*)s->avctx->extradata)[i]); if(i%4==3) av_log(s->avctx, AV_LOG_DEBUG, " "); } av_log(s->avctx, AV_LOG_DEBUG, "\n"); #endif i= get_bits(&s->gb, 2); switch(i){ case 0: s->pict_type= AV_PICTURE_TYPE_I; break; case 1: s->pict_type= AV_PICTURE_TYPE_I; break; //hmm ... case 2: s->pict_type= AV_PICTURE_TYPE_P; break; case 3: s->pict_type= AV_PICTURE_TYPE_B; break; default: av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n"); return -1; } if(s->last_picture_ptr==NULL && s->pict_type==AV_PICTURE_TYPE_B){ av_log(s->avctx, AV_LOG_ERROR, "early B pix\n"); return -1; } if (get_bits1(&s->gb)){ av_log(s->avctx, AV_LOG_ERROR, "reserved bit set\n"); return -1; } s->qscale = get_bits(&s->gb, 5); if(s->qscale==0){ av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n"); return -1; } if(RV_GET_MINOR_VER(s->avctx->sub_id) >= 2) s->loop_filter = get_bits1(&s->gb); if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1) seq = get_bits(&s->gb, 8) << 7; else seq = get_bits(&s->gb, 13) << 2; rpr_bits = s->avctx->extradata[1] & 7; if(rpr_bits){ int f, new_w, new_h; rpr_bits = FFMIN((rpr_bits >> 1) + 1, 3); f = get_bits(&s->gb, rpr_bits); if(f){ new_w= 4*((uint8_t*)s->avctx->extradata)[6+2*f]; new_h= 4*((uint8_t*)s->avctx->extradata)[7+2*f]; }else{ new_w= s->orig_width ; new_h= s->orig_height; } if(new_w != s->width || new_h != s->height){ av_log(s->avctx, AV_LOG_DEBUG, "attempting to change resolution to %dx%d\n", new_w, new_h); if (av_image_check_size(new_w, new_h, 0, s->avctx) < 0) return -1; MPV_common_end(s); avcodec_set_dimensions(s->avctx, new_w, new_h); s->width = new_w; s->height = new_h; if (MPV_common_init(s) < 0) return -1; } if(s->avctx->debug & FF_DEBUG_PICT_INFO){ av_log(s->avctx, AV_LOG_DEBUG, "F %d/%d\n", f, rpr_bits); } } else if (av_image_check_size(s->width, s->height, 0, s->avctx) < 0)
int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *data_size, const uint8_t *buf, int buf_size) { MpegEncContext *s = avctx->priv_data; int ret; AVFrame *pict = data; #ifdef PRINT_FRAME_TIME uint64_t time= rdtsc(); #endif #ifdef DEBUG av_log(avctx, AV_LOG_DEBUG, "*****frame %d size=%d\n", avctx->frame_number, buf_size); if(buf_size>0) av_log(avctx, AV_LOG_DEBUG, "bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]); #endif s->flags= avctx->flags; s->flags2= avctx->flags2; /* no supplementary picture */ if (buf_size == 0) { /* special case for last picture */ if (s->low_delay==0 && s->next_picture_ptr) { *pict= *(AVFrame*)s->next_picture_ptr; s->next_picture_ptr= NULL; *data_size = sizeof(AVFrame); } return 0; } retry: init_get_bits(&s->gb, buf, buf_size*8); s->bitstream_buffer_size=0; if (!s->context_initialized) { if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix return -1; } /* We need to set current_picture_ptr before reading the header, * otherwise we cannot store anyting in there */ if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){ int i= ff_find_unused_picture(s, 0); s->current_picture_ptr= &s->picture[i]; } ret = flv_h263_decode_picture_header(s); if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size); /* skip if the header was thrashed */ if (ret < 0){ av_log(s->avctx, AV_LOG_ERROR, "header damaged\n"); return -1; } avctx->has_b_frames= !s->low_delay; /* After H263 & mpeg4 header decode we have the height, width,*/ /* and other parameters. So then we could init the picture */ /* FIXME: By the way H263 decoder is evolving it should have */ /* an H263EncContext */ if ( s->width != avctx->coded_width || s->height != avctx->coded_height) { /* H.263 could change picture size any time */ ParseContext pc= s->parse_context; //FIXME move these demuxng hack to avformat s->parse_context.buffer=0; MPV_common_end(s); s->parse_context= pc; } if (!s->context_initialized) { avcodec_set_dimensions(avctx, s->width, s->height); goto retry; } if((s->codec_id==CODEC_ID_H263 || s->codec_id==CODEC_ID_H263P)) s->gob_index = ff_h263_get_gob_height(s); // for hurry_up==5 s->current_picture.pict_type= s->pict_type; s->current_picture.key_frame= s->pict_type == FF_I_TYPE; /* skip B-frames if we don't have reference frames */ if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)) return get_consumed_bytes(s, buf_size); /* skip b frames if we are in a hurry */ if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return get_consumed_bytes(s, buf_size); if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE) || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE) || avctx->skip_frame >= AVDISCARD_ALL) return get_consumed_bytes(s, buf_size); /* skip everything if we are in a hurry>=5 */ if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size); if(s->next_p_frame_damaged){ if(s->pict_type==FF_B_TYPE) return get_consumed_bytes(s, buf_size); else s->next_p_frame_damaged=0; } if((s->avctx->flags2 & CODEC_FLAG2_FAST) && s->pict_type==FF_B_TYPE){ s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab; s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab; }else if((!s->no_rounding) || s->pict_type==FF_B_TYPE){ s->me.qpel_put= s->dsp.put_qpel_pixels_tab; s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab; }else{ s->me.qpel_put= s->dsp.put_no_rnd_qpel_pixels_tab; s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab; } if(MPV_frame_start(s, avctx) < 0) return -1; /* decode each macroblock */ s->mb_x=0; s->mb_y=0; decode_slice(s); while(s->mb_y<s->mb_height){ if(ff_h263_resync(s)<0) break; decode_slice(s); } intrax8_decoded: MPV_frame_end(s); assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type); assert(s->current_picture.pict_type == s->pict_type); if (s->pict_type == FF_B_TYPE || s->low_delay) { *pict= *(AVFrame*)s->current_picture_ptr; } else if (s->last_picture_ptr != NULL) { *pict= *(AVFrame*)s->last_picture_ptr; } if(s->last_picture_ptr || s->low_delay){ *data_size = sizeof(AVFrame); ff_print_debug_info(s, pict); } /* Return the Picture timestamp as the frame number */ /* we subtract 1 because it is added on utils.c */ avctx->frame_number = s->picture_number - 1; #ifdef PRINT_FRAME_TIME av_log(avctx, AV_LOG_DEBUG, "%"PRId64"\n", rdtsc()-time); #endif return get_consumed_bytes(s, buf_size); }
/* The encoder doesn't know anything about interlacing, the halve height * needs to be passed and the double rowstride. Which field gets encoded * is decided by what buffers are passed to mjpeg_encode_frame */ jpeg_enc_t *jpeg_enc_init(int w, int h, int y_psize, int y_rsize, int u_psize, int u_rsize, int v_psize, int v_rsize, int cu, int q, int b) { jpeg_enc_t *j; int i = 0; mp_msg(MSGT_VO, MSGL_V, "JPEnc init: %dx%d %d %d %d %d %d %d\n", w, h, y_psize, y_rsize, u_psize, u_rsize, v_psize, v_rsize); j = av_malloc(sizeof(jpeg_enc_t)); if (j == NULL) return NULL; j->s = av_malloc(sizeof(MpegEncContext)); memset(j->s,0x00,sizeof(MpegEncContext)); if (j->s == NULL) { av_free(j); return NULL; } /* info on how to access the pixels */ j->y_ps = y_psize; j->u_ps = u_psize; j->v_ps = v_psize; j->y_rs = y_rsize; j->u_rs = u_rsize; j->v_rs = v_rsize; j->s->width = w; j->s->height = h; j->s->qscale = q; j->s->out_format = FMT_MJPEG; j->s->intra_only = 1; j->s->encoding = 1; j->s->pict_type = I_TYPE; j->s->y_dc_scale = 8; j->s->c_dc_scale = 8; //FIXME j->s->mjpeg_write_tables = 1; j->s->mjpeg_vsample[0] = 1; j->s->mjpeg_vsample[1] = 1; j->s->mjpeg_vsample[2] = 1; j->s->mjpeg_hsample[0] = 2; j->s->mjpeg_hsample[1] = 1; j->s->mjpeg_hsample[2] = 1; j->cheap_upsample = cu; j->bw = b; /* if libavcodec is used by the decoder then we must not * initialize again, but if it is not initialized then we must * initialize it here. */ if (!avcodec_inited) { /* we need to initialize libavcodec */ avcodec_init(); avcodec_register_all(); avcodec_inited=1; } if (ff_mjpeg_encode_init(j->s) < 0) { av_free(j->s); av_free(j); return NULL; } /* alloc bogus avctx to keep MPV_common_init from segfaulting */ j->s->avctx = calloc(sizeof(*j->s->avctx), 1); /* Set up to encode mjpeg */ j->s->avctx->codec_id = CODEC_ID_MJPEG; /* make MPV_common_init allocate important buffers, like s->block */ j->s->avctx->thread_count = 1; if (MPV_common_init(j->s) < 0) { av_free(j->s); av_free(j); return NULL; } /* correct the value for sc->mb_height */ j->s->mb_height = j->s->height/8; j->s->mb_intra = 1; j->s->intra_matrix[0] = ff_mpeg1_default_intra_matrix[0]; for (i = 1; i < 64; i++) j->s->intra_matrix[i] = av_clip_uint8( (ff_mpeg1_default_intra_matrix[i]*j->s->qscale) >> 3); convert_matrix(j->s, j->s->q_intra_matrix, j->s->q_intra_matrix16, j->s->intra_matrix, j->s->intra_quant_bias, 8, 8); return j; }