diff options
Diffstat (limited to 'libavcodec/h264.c')
| -rw-r--r-- | libavcodec/h264.c | 433 |
1 files changed, 1 insertions, 432 deletions
diff --git a/libavcodec/h264.c b/libavcodec/h264.c index 163562dd79..36ebb805cb 100644 --- a/libavcodec/h264.c +++ b/libavcodec/h264.c @@ -2037,7 +2037,7 @@ static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){ for(i=16; i<16+8; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i]; - svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2); + svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2); } } } @@ -5594,437 +5594,6 @@ static int decode_slice(struct AVCodecContext *avctx, void *arg){ return -1; //not reached } -static inline int decode_hrd_parameters(H264Context *h, SPS *sps){ - MpegEncContext * const s = &h->s; - int cpb_count, i; - cpb_count = get_ue_golomb_31(&s->gb) + 1; - - if(cpb_count > 32U){ - av_log(h->s.avctx, AV_LOG_ERROR, "cpb_count %d invalid\n", cpb_count); - return -1; - } - - get_bits(&s->gb, 4); /* bit_rate_scale */ - get_bits(&s->gb, 4); /* cpb_size_scale */ - for(i=0; i<cpb_count; i++){ - get_ue_golomb(&s->gb); /* bit_rate_value_minus1 */ - get_ue_golomb(&s->gb); /* cpb_size_value_minus1 */ - get_bits1(&s->gb); /* cbr_flag */ - } - sps->initial_cpb_removal_delay_length = get_bits(&s->gb, 5) + 1; - sps->cpb_removal_delay_length = get_bits(&s->gb, 5) + 1; - sps->dpb_output_delay_length = get_bits(&s->gb, 5) + 1; - sps->time_offset_length = get_bits(&s->gb, 5); - sps->cpb_cnt = cpb_count; - return 0; -} - -static inline int decode_vui_parameters(H264Context *h, SPS *sps){ - MpegEncContext * const s = &h->s; - int aspect_ratio_info_present_flag; - unsigned int aspect_ratio_idc; - - aspect_ratio_info_present_flag= get_bits1(&s->gb); - - if( aspect_ratio_info_present_flag ) { - aspect_ratio_idc= get_bits(&s->gb, 8); - if( aspect_ratio_idc == EXTENDED_SAR ) { - sps->sar.num= get_bits(&s->gb, 16); - sps->sar.den= get_bits(&s->gb, 16); - }else if(aspect_ratio_idc < FF_ARRAY_ELEMS(pixel_aspect)){ - sps->sar= pixel_aspect[aspect_ratio_idc]; - }else{ - av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n"); - return -1; - } - }else{ - sps->sar.num= - sps->sar.den= 0; - } -// s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height); - - if(get_bits1(&s->gb)){ /* overscan_info_present_flag */ - get_bits1(&s->gb); /* overscan_appropriate_flag */ - } - - sps->video_signal_type_present_flag = get_bits1(&s->gb); - if(sps->video_signal_type_present_flag){ - get_bits(&s->gb, 3); /* video_format */ - sps->full_range = get_bits1(&s->gb); /* video_full_range_flag */ - - sps->colour_description_present_flag = get_bits1(&s->gb); - if(sps->colour_description_present_flag){ - sps->color_primaries = get_bits(&s->gb, 8); /* colour_primaries */ - sps->color_trc = get_bits(&s->gb, 8); /* transfer_characteristics */ - sps->colorspace = get_bits(&s->gb, 8); /* matrix_coefficients */ - if (sps->color_primaries >= AVCOL_PRI_NB) - sps->color_primaries = AVCOL_PRI_UNSPECIFIED; - if (sps->color_trc >= AVCOL_TRC_NB) - sps->color_trc = AVCOL_TRC_UNSPECIFIED; - if (sps->colorspace >= AVCOL_SPC_NB) - sps->colorspace = AVCOL_SPC_UNSPECIFIED; - } - } - - if(get_bits1(&s->gb)){ /* chroma_location_info_present_flag */ - s->avctx->chroma_sample_location = get_ue_golomb(&s->gb)+1; /* chroma_sample_location_type_top_field */ - get_ue_golomb(&s->gb); /* chroma_sample_location_type_bottom_field */ - } - - sps->timing_info_present_flag = get_bits1(&s->gb); - if(sps->timing_info_present_flag){ - sps->num_units_in_tick = get_bits_long(&s->gb, 32); - sps->time_scale = get_bits_long(&s->gb, 32); - if(sps->num_units_in_tick-1 > 0x7FFFFFFEU || sps->time_scale-1 > 0x7FFFFFFEU){ - av_log(h->s.avctx, AV_LOG_ERROR, "time_scale/num_units_in_tick invalid or unsupported (%d/%d)\n", sps->time_scale, sps->num_units_in_tick); - return -1; - } - sps->fixed_frame_rate_flag = get_bits1(&s->gb); - } - - sps->nal_hrd_parameters_present_flag = get_bits1(&s->gb); - if(sps->nal_hrd_parameters_present_flag) - if(decode_hrd_parameters(h, sps) < 0) - return -1; - sps->vcl_hrd_parameters_present_flag = get_bits1(&s->gb); - if(sps->vcl_hrd_parameters_present_flag) - if(decode_hrd_parameters(h, sps) < 0) - return -1; - if(sps->nal_hrd_parameters_present_flag || sps->vcl_hrd_parameters_present_flag) - get_bits1(&s->gb); /* low_delay_hrd_flag */ - sps->pic_struct_present_flag = get_bits1(&s->gb); - - sps->bitstream_restriction_flag = get_bits1(&s->gb); - if(sps->bitstream_restriction_flag){ - get_bits1(&s->gb); /* motion_vectors_over_pic_boundaries_flag */ - get_ue_golomb(&s->gb); /* max_bytes_per_pic_denom */ - get_ue_golomb(&s->gb); /* max_bits_per_mb_denom */ - get_ue_golomb(&s->gb); /* log2_max_mv_length_horizontal */ - get_ue_golomb(&s->gb); /* log2_max_mv_length_vertical */ - sps->num_reorder_frames= get_ue_golomb(&s->gb); - get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/ - - if(sps->num_reorder_frames > 16U /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){ - av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames); - return -1; - } - } - - return 0; -} - -static void decode_scaling_list(H264Context *h, uint8_t *factors, int size, - const uint8_t *jvt_list, const uint8_t *fallback_list){ - MpegEncContext * const s = &h->s; - int i, last = 8, next = 8; - const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct; - if(!get_bits1(&s->gb)) /* matrix not written, we use the predicted one */ - memcpy(factors, fallback_list, size*sizeof(uint8_t)); - else - for(i=0;i<size;i++){ - if(next) - next = (last + get_se_golomb(&s->gb)) & 0xff; - if(!i && !next){ /* matrix not written, we use the preset one */ - memcpy(factors, jvt_list, size*sizeof(uint8_t)); - break; - } - last = factors[scan[i]] = next ? next : last; - } -} - -static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps, - uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){ - MpegEncContext * const s = &h->s; - int fallback_sps = !is_sps && sps->scaling_matrix_present; - const uint8_t *fallback[4] = { - fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0], - fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1], - fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0], - fallback_sps ? sps->scaling_matrix8[1] : default_scaling8[1] - }; - if(get_bits1(&s->gb)){ - sps->scaling_matrix_present |= is_sps; - decode_scaling_list(h,scaling_matrix4[0],16,default_scaling4[0],fallback[0]); // Intra, Y - decode_scaling_list(h,scaling_matrix4[1],16,default_scaling4[0],scaling_matrix4[0]); // Intra, Cr - decode_scaling_list(h,scaling_matrix4[2],16,default_scaling4[0],scaling_matrix4[1]); // Intra, Cb - decode_scaling_list(h,scaling_matrix4[3],16,default_scaling4[1],fallback[1]); // Inter, Y - decode_scaling_list(h,scaling_matrix4[4],16,default_scaling4[1],scaling_matrix4[3]); // Inter, Cr - decode_scaling_list(h,scaling_matrix4[5],16,default_scaling4[1],scaling_matrix4[4]); // Inter, Cb - if(is_sps || pps->transform_8x8_mode){ - decode_scaling_list(h,scaling_matrix8[0],64,default_scaling8[0],fallback[2]); // Intra, Y - decode_scaling_list(h,scaling_matrix8[1],64,default_scaling8[1],fallback[3]); // Inter, Y - } - } -} - -int ff_h264_decode_seq_parameter_set(H264Context *h){ - MpegEncContext * const s = &h->s; - int profile_idc, level_idc; - unsigned int sps_id; - int i; - SPS *sps; - - profile_idc= get_bits(&s->gb, 8); - get_bits1(&s->gb); //constraint_set0_flag - get_bits1(&s->gb); //constraint_set1_flag - get_bits1(&s->gb); //constraint_set2_flag - get_bits1(&s->gb); //constraint_set3_flag - get_bits(&s->gb, 4); // reserved - level_idc= get_bits(&s->gb, 8); - sps_id= get_ue_golomb_31(&s->gb); - - if(sps_id >= MAX_SPS_COUNT) { - av_log(h->s.avctx, AV_LOG_ERROR, "sps_id (%d) out of range\n", sps_id); - return -1; - } - sps= av_mallocz(sizeof(SPS)); - if(sps == NULL) - return -1; - - sps->profile_idc= profile_idc; - sps->level_idc= level_idc; - - memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4)); - memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8)); - sps->scaling_matrix_present = 0; - - if(sps->profile_idc >= 100){ //high profile - sps->chroma_format_idc= get_ue_golomb_31(&s->gb); - if(sps->chroma_format_idc == 3) - sps->residual_color_transform_flag = get_bits1(&s->gb); - sps->bit_depth_luma = get_ue_golomb(&s->gb) + 8; - sps->bit_depth_chroma = get_ue_golomb(&s->gb) + 8; - sps->transform_bypass = get_bits1(&s->gb); - decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8); - }else{ - sps->chroma_format_idc= 1; - sps->bit_depth_luma = 8; - sps->bit_depth_chroma = 8; - } - - sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4; - sps->poc_type= get_ue_golomb_31(&s->gb); - - if(sps->poc_type == 0){ //FIXME #define - sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4; - } else if(sps->poc_type == 1){//FIXME #define - sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb); - sps->offset_for_non_ref_pic= get_se_golomb(&s->gb); - sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb); - sps->poc_cycle_length = get_ue_golomb(&s->gb); - - if((unsigned)sps->poc_cycle_length >= FF_ARRAY_ELEMS(sps->offset_for_ref_frame)){ - av_log(h->s.avctx, AV_LOG_ERROR, "poc_cycle_length overflow %u\n", sps->poc_cycle_length); - goto fail; - } - - for(i=0; i<sps->poc_cycle_length; i++) - sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb); - }else if(sps->poc_type != 2){ - av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type); - goto fail; - } - - sps->ref_frame_count= get_ue_golomb_31(&s->gb); - if(sps->ref_frame_count > MAX_PICTURE_COUNT-2 || sps->ref_frame_count >= 32U){ - av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n"); - goto fail; - } - sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb); - sps->mb_width = get_ue_golomb(&s->gb) + 1; - sps->mb_height= get_ue_golomb(&s->gb) + 1; - if((unsigned)sps->mb_width >= INT_MAX/16 || (unsigned)sps->mb_height >= INT_MAX/16 || - avcodec_check_dimensions(NULL, 16*sps->mb_width, 16*sps->mb_height)){ - av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n"); - goto fail; - } - - sps->frame_mbs_only_flag= get_bits1(&s->gb); - if(!sps->frame_mbs_only_flag) - sps->mb_aff= get_bits1(&s->gb); - else - sps->mb_aff= 0; - - sps->direct_8x8_inference_flag= get_bits1(&s->gb); - -#ifndef ALLOW_INTERLACE - if(sps->mb_aff) - av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n"); -#endif - sps->crop= get_bits1(&s->gb); - if(sps->crop){ - sps->crop_left = get_ue_golomb(&s->gb); - sps->crop_right = get_ue_golomb(&s->gb); - sps->crop_top = get_ue_golomb(&s->gb); - sps->crop_bottom= get_ue_golomb(&s->gb); - if(sps->crop_left || sps->crop_top){ - av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n"); - } - if(sps->crop_right >= 8 || sps->crop_bottom >= (8>> !sps->frame_mbs_only_flag)){ - av_log(h->s.avctx, AV_LOG_ERROR, "brainfart cropping not supported, this could look slightly wrong ...\n"); - } - }else{ - sps->crop_left = - sps->crop_right = - sps->crop_top = - sps->crop_bottom= 0; - } - - sps->vui_parameters_present_flag= get_bits1(&s->gb); - if( sps->vui_parameters_present_flag ) - if (decode_vui_parameters(h, sps) < 0) - goto fail; - - if(s->avctx->debug&FF_DEBUG_PICT_INFO){ - av_log(h->s.avctx, AV_LOG_DEBUG, "sps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%d/%d/%d/%d %s %s %d/%d\n", - sps_id, sps->profile_idc, sps->level_idc, - sps->poc_type, - sps->ref_frame_count, - sps->mb_width, sps->mb_height, - sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"), - sps->direct_8x8_inference_flag ? "8B8" : "", - sps->crop_left, sps->crop_right, - sps->crop_top, sps->crop_bottom, - sps->vui_parameters_present_flag ? "VUI" : "", - ((const char*[]){"Gray","420","422","444"})[sps->chroma_format_idc], - sps->timing_info_present_flag ? sps->num_units_in_tick : 0, - sps->timing_info_present_flag ? sps->time_scale : 0 - ); - } - - av_free(h->sps_buffers[sps_id]); - h->sps_buffers[sps_id]= sps; - h->sps = *sps; - return 0; -fail: - av_free(sps); - return -1; -} - -static void -build_qp_table(PPS *pps, int t, int index) -{ - int i; - for(i = 0; i < 52; i++) - pps->chroma_qp_table[t][i] = chroma_qp[av_clip(i + index, 0, 51)]; -} - -int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){ - MpegEncContext * const s = &h->s; - unsigned int pps_id= get_ue_golomb(&s->gb); - PPS *pps; - - if(pps_id >= MAX_PPS_COUNT) { - av_log(h->s.avctx, AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id); - return -1; - } - - pps= av_mallocz(sizeof(PPS)); - if(pps == NULL) - return -1; - pps->sps_id= get_ue_golomb_31(&s->gb); - if((unsigned)pps->sps_id>=MAX_SPS_COUNT || h->sps_buffers[pps->sps_id] == NULL){ - av_log(h->s.avctx, AV_LOG_ERROR, "sps_id out of range\n"); - goto fail; - } - - pps->cabac= get_bits1(&s->gb); - pps->pic_order_present= get_bits1(&s->gb); - pps->slice_group_count= get_ue_golomb(&s->gb) + 1; - if(pps->slice_group_count > 1 ){ - pps->mb_slice_group_map_type= get_ue_golomb(&s->gb); - av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n"); - switch(pps->mb_slice_group_map_type){ - case 0: -#if 0 -| for( i = 0; i <= num_slice_groups_minus1; i++ ) | | | -| run_length[ i ] |1 |ue(v) | -#endif - break; - case 2: -#if 0 -| for( i = 0; i < num_slice_groups_minus1; i++ ) | | | -|{ | | | -| top_left_mb[ i ] |1 |ue(v) | -| bottom_right_mb[ i ] |1 |ue(v) | -| } | | | -#endif - break; - case 3: - case 4: - case 5: -#if 0 -| slice_group_change_direction_flag |1 |u(1) | -| slice_group_change_rate_minus1 |1 |ue(v) | -#endif - break; - case 6: -#if 0 -| slice_group_id_cnt_minus1 |1 |ue(v) | -| for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | | -|) | | | -| slice_group_id[ i ] |1 |u(v) | -#endif - break; - } - } - pps->ref_count[0]= get_ue_golomb(&s->gb) + 1; - pps->ref_count[1]= get_ue_golomb(&s->gb) + 1; - if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){ - av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n"); - goto fail; - } - - pps->weighted_pred= get_bits1(&s->gb); - pps->weighted_bipred_idc= get_bits(&s->gb, 2); - pps->init_qp= get_se_golomb(&s->gb) + 26; - pps->init_qs= get_se_golomb(&s->gb) + 26; - pps->chroma_qp_index_offset[0]= get_se_golomb(&s->gb); - pps->deblocking_filter_parameters_present= get_bits1(&s->gb); - pps->constrained_intra_pred= get_bits1(&s->gb); - pps->redundant_pic_cnt_present = get_bits1(&s->gb); - - pps->transform_8x8_mode= 0; - h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit - memcpy(pps->scaling_matrix4, h->sps_buffers[pps->sps_id]->scaling_matrix4, sizeof(pps->scaling_matrix4)); - memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8)); - - if(get_bits_count(&s->gb) < bit_length){ - pps->transform_8x8_mode= get_bits1(&s->gb); - decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8); - pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset - } else { - pps->chroma_qp_index_offset[1]= pps->chroma_qp_index_offset[0]; - } - - build_qp_table(pps, 0, pps->chroma_qp_index_offset[0]); - build_qp_table(pps, 1, pps->chroma_qp_index_offset[1]); - if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1]) - h->pps.chroma_qp_diff= 1; - - if(s->avctx->debug&FF_DEBUG_PICT_INFO){ - av_log(h->s.avctx, AV_LOG_DEBUG, "pps:%u sps:%u %s slice_groups:%d ref:%d/%d %s qp:%d/%d/%d/%d %s %s %s %s\n", - pps_id, pps->sps_id, - pps->cabac ? "CABAC" : "CAVLC", - pps->slice_group_count, - pps->ref_count[0], pps->ref_count[1], - pps->weighted_pred ? "weighted" : "", - pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1], - pps->deblocking_filter_parameters_present ? "LPAR" : "", - pps->constrained_intra_pred ? "CONSTR" : "", - pps->redundant_pic_cnt_present ? "REDU" : "", - pps->transform_8x8_mode ? "8x8DCT" : "" - ); - } - - av_free(h->pps_buffers[pps_id]); - h->pps_buffers[pps_id]= pps; - return 0; -fail: - av_free(pps); - return -1; -} - /** * Call decode_slice() for each context. * |