mirror of https://github.com/FFmpeg/FFmpeg.git
no speedloss meassured, also its really not touching anything that is speed relevant. Originally committed as revision 21169 to svn://svn.ffmpeg.org/ffmpeg/trunkrelease/0.6
Michael Niedermayer
15 years ago
parent
28b2866f45
commit
889fce8e30
5 changed files with 534 additions and 494 deletions
@ -0,0 +1,527 @@ |
||||
/*
|
||||
* H.26L/H.264/AVC/JVT/14496-10/... parameter set decoding |
||||
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
||||
* |
||||
* 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 libavcodec/h264_ps.c |
||||
* H.264 / AVC / MPEG4 part10 parameter set decoding. |
||||
* @author Michael Niedermayer <michaelni@gmx.at> |
||||
*/ |
||||
|
||||
#include "internal.h" |
||||
#include "dsputil.h" |
||||
#include "avcodec.h" |
||||
#include "h264.h" |
||||
#include "h264data.h" //FIXME FIXME FIXME (just for zigzag_scan) |
||||
#include "golomb.h" |
||||
|
||||
|
||||
//#undef NDEBUG
|
||||
#include <assert.h> |
||||
|
||||
static const AVRational pixel_aspect[17]={ |
||||
{0, 1}, |
||||
{1, 1}, |
||||
{12, 11}, |
||||
{10, 11}, |
||||
{16, 11}, |
||||
{40, 33}, |
||||
{24, 11}, |
||||
{20, 11}, |
||||
{32, 11}, |
||||
{80, 33}, |
||||
{18, 11}, |
||||
{15, 11}, |
||||
{64, 33}, |
||||
{160,99}, |
||||
{4, 3}, |
||||
{3, 2}, |
||||
{2, 1}, |
||||
}; |
||||
|
||||
const uint8_t ff_h264_chroma_qp[52]={ |
||||
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11, |
||||
12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27, |
||||
28,29,29,30,31,32,32,33,34,34,35,35,36,36,37,37, |
||||
37,38,38,38,39,39,39,39 |
||||
}; |
||||
|
||||
static const uint8_t default_scaling4[2][16]={ |
||||
{ 6,13,20,28, |
||||
13,20,28,32, |
||||
20,28,32,37, |
||||
28,32,37,42 |
||||
},{ |
||||
10,14,20,24, |
||||
14,20,24,27, |
||||
20,24,27,30, |
||||
24,27,30,34 |
||||
}}; |
||||
|
||||
static const uint8_t default_scaling8[2][64]={ |
||||
{ 6,10,13,16,18,23,25,27, |
||||
10,11,16,18,23,25,27,29, |
||||
13,16,18,23,25,27,29,31, |
||||
16,18,23,25,27,29,31,33, |
||||
18,23,25,27,29,31,33,36, |
||||
23,25,27,29,31,33,36,38, |
||||
25,27,29,31,33,36,38,40, |
||||
27,29,31,33,36,38,40,42 |
||||
},{ |
||||
9,13,15,17,19,21,22,24, |
||||
13,13,17,19,21,22,24,25, |
||||
15,17,19,21,22,24,25,27, |
||||
17,19,21,22,24,25,27,28, |
||||
19,21,22,24,25,27,28,30, |
||||
21,22,24,25,27,28,30,32, |
||||
22,24,25,27,28,30,32,33, |
||||
24,25,27,28,30,32,33,35 |
||||
}}; |
||||
|
||||
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] = ff_h264_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; |
||||
} |
||||
Loading…
Reference in new issue