static int32_t getFPS( demux_t *p_demux, block_t * p_block )
{
demux_sys_t *p_sys = p_demux->p_sys;
bs_t bs;
uint8_t * p_decoded_nal;
int i_decoded_nal;
if( p_block->i_buffer < 5 )
return -1;
p_decoded_nal = CreateDecodedNAL(&i_decoded_nal,
p_block->p_buffer+4, p_block->i_buffer-4);
if( !p_decoded_nal )
return -1;
bs_init( &bs, p_decoded_nal, i_decoded_nal );
bs_skip( &bs, 12 );
int32_t max_sub_layer_minus1 = bs_read( &bs, 3 );
bs_skip( &bs, 17 );
hevc_skip_profile_tiers_level( &bs, max_sub_layer_minus1 );
int32_t vps_sub_layer_ordering_info_present_flag = bs_read1( &bs );
int32_t i = vps_sub_layer_ordering_info_present_flag? 0 : max_sub_layer_minus1;
for( ; i <= max_sub_layer_minus1; i++ )
{
bs_read_ue( &bs );
bs_read_ue( &bs );
bs_read_ue( &bs );
}
uint32_t vps_max_layer_id = bs_read( &bs, 6);
uint32_t vps_num_layer_sets_minus1 = bs_read_ue( &bs );
bs_skip( &bs, vps_max_layer_id * vps_num_layer_sets_minus1 );
if( bs_read1( &bs ))
{
uint32_t num_units_in_tick = bs_read( &bs, 32 );
uint32_t time_scale = bs_read( &bs, 32 );
if( num_units_in_tick )
{
p_sys->f_fps = ( (float) time_scale )/( (float) num_units_in_tick );
msg_Dbg(p_demux,"Using framerate %f fps from VPS",
(double) p_sys->f_fps);
}
else
{
msg_Err( p_demux, "vps_num_units_in_tick null defaulting to 25 fps");
p_sys->f_fps = 25.0f;
}
}
else
{
msg_Err( p_demux, "No timing info in VPS defaulting to 25 fps");
p_sys->f_fps = 25.0f;
}
free(p_decoded_nal);
return 0;
}
static block_t *PacketizeParse(void *p_private, bool *pb_ts_used, block_t *p_block)
{
decoder_t *p_dec = p_private;
decoder_sys_t *p_sys = p_dec->p_sys;
block_t * p_nal = NULL;
while (p_block->i_buffer > 5 && p_block->p_buffer[p_block->i_buffer-1] == 0x00 )
p_block->i_buffer--;
bs_t bs;
bs_init(&bs, p_block->p_buffer+3, p_block->i_buffer-3);
/* Get NALU type */
uint32_t forbidden_zero_bit = bs_read1(&bs);
if (forbidden_zero_bit)
{
msg_Err(p_dec,"Forbidden zero bit not null, corrupted NAL");
p_sys->p_frame = NULL;
p_sys->b_vcl = false;
return NULL;
}
uint32_t nalu_type = bs_read(&bs,6);
bs_skip(&bs, 9);
if (nalu_type < VPS)
{
/* NAL is a VCL NAL */
p_sys->b_vcl = true;
uint32_t first_slice_in_pic = bs_read1(&bs);
if (first_slice_in_pic && p_sys->p_frame)
{
p_nal = block_ChainGather(p_sys->p_frame);
p_sys->p_frame = NULL;
}
block_ChainAppend(&p_sys->p_frame, p_block);
}
else
{
if (p_sys->b_vcl)
{
p_nal = block_ChainGather(p_sys->p_frame);
p_nal->p_next = p_block;
p_sys->p_frame = NULL;
p_sys->b_vcl =false;
}
else
p_nal = p_block;
}
*pb_ts_used = false;
return p_nal;
}
static bool hevc_parse_scaling_list_rbsp( bs_t *p_bs )
{
if( bs_remain( p_bs ) < 16 )
return false;
for( int i=0; i<4; i++ )
{
for( int j=0; j<6; j += (i == 3) ? 3 : 1 )
{
if( bs_read1( p_bs ) == 0 )
bs_read_ue( p_bs );
else
{
unsigned nextCoef = 8;
unsigned coefNum = __MIN( 64, (1 << (4 + (i << 1))));
if( i > 1 )
{
nextCoef = bs_read_se( p_bs ) + 8;
}
for( unsigned k=0; k<coefNum; k++ )
{
nextCoef = ( nextCoef + bs_read_se( p_bs ) + 256 ) % 256;
}
}
}
}
return true;
}
static inline int bs_read_ue( bs_t *s )
{
int i = 0;
while( bs_read1( s ) == 0 && s->p < s->p_end && i < 32 )
{
i++;
}
return( ( 1 << i) - 1 + bs_read( s, i ) );
}
static int ParseVOP( decoder_t *p_dec, block_t *p_vop )
{
decoder_sys_t *p_sys = p_dec->p_sys;
int64_t i_time_increment, i_time_ref;
int i_modulo_time_base = 0, i_time_increment_bits;
bs_t s;
bs_init( &s, &p_vop->p_buffer[4], p_vop->i_buffer - 4 );
switch( bs_read( &s, 2 ) )
{
case 0:
p_sys->i_flags = BLOCK_FLAG_TYPE_I;
break;
case 1:
p_sys->i_flags = BLOCK_FLAG_TYPE_P;
break;
case 2:
p_sys->i_flags = BLOCK_FLAG_TYPE_B;
p_sys->b_frame = true;
break;
case 3: /* gni ? */
p_sys->i_flags = BLOCK_FLAG_TYPE_PB;
break;
}
while( bs_read( &s, 1 ) ) i_modulo_time_base++;
if( !bs_read1( &s ) ) return VLC_EGENERIC; /* Marker */
/* VOP time increment */
i_time_increment_bits = vlc_log2(p_dec->p_sys->i_fps_num - 1) + 1;
if( i_time_increment_bits < 1 ) i_time_increment_bits = 1;
i_time_increment = bs_read( &s, i_time_increment_bits );
/* Interpolate PTS/DTS */
if( !(p_sys->i_flags & BLOCK_FLAG_TYPE_B) )
{
p_sys->i_last_time_ref = p_sys->i_time_ref;
p_sys->i_time_ref +=
(i_modulo_time_base * p_dec->p_sys->i_fps_num);
i_time_ref = p_sys->i_time_ref;
}
else
{
i_time_ref = p_sys->i_last_time_ref +
(i_modulo_time_base * p_dec->p_sys->i_fps_num);
}
#if 0
msg_Err( p_dec, "interp pts/dts (%lli,%lli), pts/dts (%lli,%lli)",
p_sys->i_interpolated_pts, p_sys->i_interpolated_dts,
p_vop->i_pts, p_vop->i_dts );
#endif
if( p_dec->p_sys->i_fps_num < 5 && /* Work-around buggy streams */
p_dec->fmt_in.video.i_frame_rate > 0 &&
p_dec->fmt_in.video.i_frame_rate_base > 0 )
{
p_sys->i_interpolated_pts += INT64_C(1000000) *
p_dec->fmt_in.video.i_frame_rate_base /
p_dec->fmt_in.video.i_frame_rate;
}
else if( p_dec->p_sys->i_fps_num )
p_sys->i_interpolated_pts +=
( INT64_C(1000000) * (i_time_ref + i_time_increment -
p_sys->i_last_time - p_sys->i_last_timeincr) /
p_dec->p_sys->i_fps_num );
p_sys->i_last_time = i_time_ref;
p_sys->i_last_timeincr = i_time_increment;
/* Correct interpolated dts when we receive a new pts/dts */
if( p_vop->i_pts > VLC_TS_INVALID )
p_sys->i_interpolated_pts = p_vop->i_pts;
if( p_vop->i_dts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_vop->i_dts;
if( (p_sys->i_flags & BLOCK_FLAG_TYPE_B) || !p_sys->b_frame )
{
/* Trivial case (DTS == PTS) */
p_sys->i_interpolated_dts = p_sys->i_interpolated_pts;
if( p_vop->i_pts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_vop->i_pts;
if( p_vop->i_dts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_vop->i_dts;
p_sys->i_interpolated_pts = p_sys->i_interpolated_dts;
}
else
{
if( p_sys->i_last_ref_pts > VLC_TS_INVALID )
p_sys->i_interpolated_dts = p_sys->i_last_ref_pts;
p_sys->i_last_ref_pts = p_sys->i_interpolated_pts;
}
return VLC_SUCCESS;
}
/* ParseVOL:
* TODO:
* - support aspect ratio
*/
static int ParseVOL( decoder_t *p_dec, es_format_t *fmt,
uint8_t *p_vol, int i_vol )
{
decoder_sys_t *p_sys = p_dec->p_sys;
int i_vo_type, i_vo_ver_id, i_ar, i_shape;
bs_t s;
for( ;; )
{
if( p_vol[0] == 0x00 && p_vol[1] == 0x00 && p_vol[2] == 0x01 &&
p_vol[3] >= 0x20 && p_vol[3] <= 0x2f ) break;
p_vol++; i_vol--;
if( i_vol <= 4 ) return VLC_EGENERIC;
}
bs_init( &s, &p_vol[4], i_vol - 4 );
bs_skip( &s, 1 ); /* random access */
i_vo_type = bs_read( &s, 8 );
if( bs_read1( &s ) )
{
i_vo_ver_id = bs_read( &s, 4 );
bs_skip( &s, 3 );
}
else
{
i_vo_ver_id = 1;
}
i_ar = bs_read( &s, 4 );
if( i_ar == 0xf )
{
int i_ar_width, i_ar_height;
i_ar_width = bs_read( &s, 8 );
i_ar_height= bs_read( &s, 8 );
}
if( bs_read1( &s ) )
{
int i_chroma_format;
int i_low_delay;
/* vol control parameter */
i_chroma_format = bs_read( &s, 2 );
i_low_delay = bs_read1( &s );
if( bs_read1( &s ) ) /* vbv parameters */
{
unsigned int i_bitrate, i_vbv_buffer_size, i_vbv_occupancy;
i_bitrate = bs_read( &s, 15 ) << 15;
bs_skip( &s, 1 );
i_bitrate += bs_read( &s, 15 );
bs_skip( &s, 1 );
i_vbv_buffer_size = bs_read( &s, 15 ) << 3;
bs_skip( &s, 1 );
i_vbv_buffer_size += bs_read( &s, 3 );
i_vbv_occupancy = bs_read( &s, 11 ) << 15;
bs_skip( &s, 1 );
i_vbv_occupancy += bs_read( &s, 15 );
bs_skip( &s, 1 );
p_dec->fmt_out.i_bitrate = i_bitrate * 400;
p_dec->fmt_out.video.i_cpb_buffer = i_vbv_buffer_size * 16384;
p_dec->p_sys->i_vbv_occupancy = i_vbv_occupancy * 64;
}
}
/* shape 0->RECT, 1->BIN, 2->BIN_ONLY, 3->GRAY */
i_shape = bs_read( &s, 2 );
if( i_shape == 3 && i_vo_ver_id != 1 )
{
bs_skip( &s, 4 );
}
if( !bs_read1( &s ) ) return VLC_EGENERIC; /* Marker */
p_sys->i_fps_num = bs_read( &s, 16 ); /* Time increment resolution*/
if( !p_sys->i_fps_num ) p_sys->i_fps_num = 1;
if( !bs_read1( &s ) ) return VLC_EGENERIC; /* Marker */
if( bs_read1( &s ) )
{
int i_time_increment_bits = vlc_log2( p_sys->i_fps_num - 1 ) + 1;
if( i_time_increment_bits < 1 ) i_time_increment_bits = 1;
p_sys->i_fps_den = bs_read( &s, i_time_increment_bits );
}
if( i_shape == 0 )
{
bs_skip( &s, 1 );
fmt->video.i_width = bs_read( &s, 13 );
bs_skip( &s, 1 );
fmt->video.i_height= bs_read( &s, 13 );
bs_skip( &s, 1 );
}
return VLC_SUCCESS;
}
static bool h264_parse_sequence_parameter_set_rbsp( bs_t *p_bs,
h264_sequence_parameter_set_t *p_sps )
{
int i_tmp;
int i_profile_idc = bs_read( p_bs, 8 );
p_sps->i_profile = i_profile_idc;
p_sps->i_constraint_set_flags = bs_read( p_bs, 8 );
p_sps->i_level = bs_read( p_bs, 8 );
/* sps id */
uint32_t i_sps_id = bs_read_ue( p_bs );
if( i_sps_id > H264_SPS_ID_MAX )
return false;
p_sps->i_id = i_sps_id;
if( i_profile_idc == PROFILE_H264_HIGH ||
i_profile_idc == PROFILE_H264_HIGH_10 ||
i_profile_idc == PROFILE_H264_HIGH_422 ||
i_profile_idc == PROFILE_H264_HIGH_444 || /* Old one, no longer on spec */
i_profile_idc == PROFILE_H264_HIGH_444_PREDICTIVE ||
i_profile_idc == PROFILE_H264_CAVLC_INTRA ||
i_profile_idc == PROFILE_H264_SVC_BASELINE ||
i_profile_idc == PROFILE_H264_SVC_HIGH ||
i_profile_idc == PROFILE_H264_MVC_MULTIVIEW_HIGH ||
i_profile_idc == PROFILE_H264_MVC_STEREO_HIGH ||
i_profile_idc == PROFILE_H264_MVC_MULTIVIEW_DEPTH_HIGH ||
i_profile_idc == PROFILE_H264_MVC_ENHANCED_MULTIVIEW_DEPTH_HIGH ||
i_profile_idc == PROFILE_H264_MFC_HIGH )
{
/* chroma_format_idc */
p_sps->i_chroma_idc = bs_read_ue( p_bs );
if( p_sps->i_chroma_idc == 3 )
bs_skip( p_bs, 1 ); /* separate_colour_plane_flag */
/* bit_depth_luma_minus8 */
p_sps->i_bit_depth_luma = bs_read_ue( p_bs ) + 8;
/* bit_depth_chroma_minus8 */
p_sps->i_bit_depth_chroma = bs_read_ue( p_bs ) + 8;
/* qpprime_y_zero_transform_bypass_flag */
bs_skip( p_bs, 1 );
/* seq_scaling_matrix_present_flag */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
for( int i = 0; i < ((3 != p_sps->i_chroma_idc) ? 8 : 12); i++ )
{
/* seq_scaling_list_present_flag[i] */
i_tmp = bs_read( p_bs, 1 );
if( !i_tmp )
continue;
const int i_size_of_scaling_list = (i < 6 ) ? 16 : 64;
/* scaling_list (...) */
int i_lastscale = 8;
int i_nextscale = 8;
for( int j = 0; j < i_size_of_scaling_list; j++ )
{
if( i_nextscale != 0 )
{
/* delta_scale */
i_tmp = bs_read_se( p_bs );
i_nextscale = ( i_lastscale + i_tmp + 256 ) % 256;
/* useDefaultScalingMatrixFlag = ... */
}
/* scalinglist[j] */
i_lastscale = ( i_nextscale == 0 ) ? i_lastscale : i_nextscale;
}
}
}
}
/* Skip i_log2_max_frame_num */
p_sps->i_log2_max_frame_num = bs_read_ue( p_bs );
if( p_sps->i_log2_max_frame_num > 12)
p_sps->i_log2_max_frame_num = 12;
/* Read poc_type */
p_sps->i_pic_order_cnt_type = bs_read_ue( p_bs );
if( p_sps->i_pic_order_cnt_type == 0 )
{
/* skip i_log2_max_poc_lsb */
p_sps->i_log2_max_pic_order_cnt_lsb = bs_read_ue( p_bs );
if( p_sps->i_log2_max_pic_order_cnt_lsb > 12 )
p_sps->i_log2_max_pic_order_cnt_lsb = 12;
}
else if( p_sps->i_pic_order_cnt_type == 1 )
{
int i_cycle;
/* skip b_delta_pic_order_always_zero */
p_sps->i_delta_pic_order_always_zero_flag = bs_read( p_bs, 1 );
/* skip i_offset_for_non_ref_pic */
bs_read_se( p_bs );
/* skip i_offset_for_top_to_bottom_field */
bs_read_se( p_bs );
/* read i_num_ref_frames_in_poc_cycle */
i_cycle = bs_read_ue( p_bs );
if( i_cycle > 256 ) i_cycle = 256;
while( i_cycle > 0 )
{
/* skip i_offset_for_ref_frame */
bs_read_se(p_bs );
i_cycle--;
}
}
/* i_num_ref_frames */
bs_read_ue( p_bs );
/* b_gaps_in_frame_num_value_allowed */
bs_skip( p_bs, 1 );
/* Read size */
p_sps->pic_width_in_mbs_minus1 = bs_read_ue( p_bs );
p_sps->pic_height_in_map_units_minus1 = bs_read_ue( p_bs );
/* b_frame_mbs_only */
p_sps->frame_mbs_only_flag = bs_read( p_bs, 1 );
if( !p_sps->frame_mbs_only_flag )
bs_skip( p_bs, 1 );
/* b_direct8x8_inference */
bs_skip( p_bs, 1 );
/* crop */
if( bs_read1( p_bs ) ) /* frame_cropping_flag */
{
p_sps->frame_crop.left_offset = bs_read_ue( p_bs );
p_sps->frame_crop.right_offset = bs_read_ue( p_bs );
p_sps->frame_crop.right_offset = bs_read_ue( p_bs );
p_sps->frame_crop.bottom_offset = bs_read_ue( p_bs );
}
/* vui */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
p_sps->vui.b_valid = true;
/* read the aspect ratio part if any */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
static const struct { int w, h; } sar[17] =
{
{ 0, 0 }, { 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 },
};
int i_sar = bs_read( p_bs, 8 );
int w, h;
if( i_sar < 17 )
{
w = sar[i_sar].w;
h = sar[i_sar].h;
}
else if( i_sar == 255 )
{
w = bs_read( p_bs, 16 );
h = bs_read( p_bs, 16 );
}
else
{
w = 0;
h = 0;
}
if( w != 0 && h != 0 )
{
p_sps->vui.i_sar_num = w;
p_sps->vui.i_sar_den = h;
}
else
{
p_sps->vui.i_sar_num = 1;
p_sps->vui.i_sar_den = 1;
}
}
/* overscan */
i_tmp = bs_read( p_bs, 1 );
if ( i_tmp )
bs_read( p_bs, 1 );
/* video signal type */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
bs_read( p_bs, 3 );
p_sps->vui.colour.b_full_range = bs_read( p_bs, 1 );
/* colour desc */
i_tmp = bs_read( p_bs, 1 );
if ( i_tmp )
{
p_sps->vui.colour.i_colour_primaries = bs_read( p_bs, 8 );
p_sps->vui.colour.i_transfer_characteristics = bs_read( p_bs, 8 );
p_sps->vui.colour.i_matrix_coefficients = bs_read( p_bs, 8 );
}
else
{
p_sps->vui.colour.i_colour_primaries = HXXX_PRIMARIES_UNSPECIFIED;
p_sps->vui.colour.i_transfer_characteristics = HXXX_TRANSFER_UNSPECIFIED;
p_sps->vui.colour.i_matrix_coefficients = HXXX_MATRIX_UNSPECIFIED;
}
}
/* chroma loc info */
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
bs_read_ue( p_bs );
bs_read_ue( p_bs );
}
/* timing info */
p_sps->vui.b_timing_info_present_flag = bs_read( p_bs, 1 );
if( p_sps->vui.b_timing_info_present_flag )
{
p_sps->vui.i_num_units_in_tick = bs_read( p_bs, 32 );
p_sps->vui.i_time_scale = bs_read( p_bs, 32 );
p_sps->vui.b_fixed_frame_rate = bs_read( p_bs, 1 );
}
/* Nal hrd & VC1 hrd parameters */
p_sps->vui.b_hrd_parameters_present_flag = false;
for ( int i=0; i<2; i++ )
{
i_tmp = bs_read( p_bs, 1 );
if( i_tmp )
{
p_sps->vui.b_hrd_parameters_present_flag = true;
uint32_t count = bs_read_ue( p_bs ) + 1;
if( count > 31 )
return false;
bs_read( p_bs, 4 );
bs_read( p_bs, 4 );
for( uint32_t i=0; i<count; i++ )
{
if( bs_remain( p_bs ) < 23 )
return false;
bs_read_ue( p_bs );
bs_read_ue( p_bs );
bs_read( p_bs, 1 );
}
bs_read( p_bs, 5 );
p_sps->vui.i_cpb_removal_delay_length_minus1 = bs_read( p_bs, 5 );
p_sps->vui.i_dpb_output_delay_length_minus1 = bs_read( p_bs, 5 );
bs_read( p_bs, 5 );
}
}
if( p_sps->vui.b_hrd_parameters_present_flag )
bs_read( p_bs, 1 );
/* pic struct info */
p_sps->vui.b_pic_struct_present_flag = bs_read( p_bs, 1 );
/* + unparsed remains */
}
return true;
}
static bool hevc_parse_inner_profile_tier_level_rbsp( bs_t *p_bs,
hevc_inner_profile_tier_level_t *p_in )
{
if( bs_remain( p_bs ) < 88 )
return false;
p_in->profile_space = bs_read( p_bs, 2 );
p_in->tier_flag = bs_read1( p_bs );
p_in->profile_idc = bs_read( p_bs, 5 );
p_in->profile_compatibility_flag = bs_read( p_bs, 32 );
p_in->progressive_source_flag = bs_read1( p_bs );
p_in->interlaced_source_flag = bs_read1( p_bs );
p_in->non_packed_constraint_flag = bs_read1( p_bs );
p_in->frame_only_constraint_flag = bs_read1( p_bs );
if( ( p_in->profile_idc >= 4 && p_in->profile_idc <= 7 ) ||
( p_in->profile_compatibility_flag & 0x0F000000 ) )
{
p_in->idc4to7.max_12bit_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.max_10bit_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.max_8bit_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.max_422chroma_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.max_420chroma_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.max_monochrome_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.intra_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.one_picture_only_constraint_flag = bs_read1( p_bs );
p_in->idc4to7.lower_bit_rate_constraint_flag = bs_read1( p_bs );
(void) bs_read( p_bs, 2 );
}
else
{
(void) bs_read( p_bs, 11 );
}
(void) bs_read( p_bs, 32 );
if( ( p_in->profile_idc >= 1 && p_in->profile_idc <= 5 ) ||
( p_in->profile_compatibility_flag & 0x7C000000 ) )
p_in->idc1to5.inbld_flag = bs_read1( p_bs );
else
(void) bs_read1( p_bs );
return true;
}
static bool hevc_parse_vui_parameters_rbsp( bs_t *p_bs, hevc_vui_parameters_t *p_vui )
{
if( bs_remain( p_bs ) < 10 )
return false;
p_vui->aspect_ratio_info_present_flag = bs_read1( p_bs );
if( p_vui->aspect_ratio_info_present_flag )
{
p_vui->ar.aspect_ratio_idc = bs_read( p_bs, 8 );
if( p_vui->ar.aspect_ratio_idc == 0xFF ) //HEVC_SAR__IDC_EXTENDED_SAR )
{
p_vui->ar.sar_width = bs_read( p_bs, 16 );
p_vui->ar.sar_height = bs_read( p_bs, 16 );
}
}
p_vui->overscan_info_present_flag = bs_read1( p_bs );
if( p_vui->overscan_info_present_flag )
p_vui->overscan_appropriate_flag = bs_read1( p_bs );
p_vui->video_signal_type_present_flag = bs_read1( p_bs );
if( p_vui->video_signal_type_present_flag )
{
p_vui->vs.video_format = bs_read( p_bs, 3 );
p_vui->vs.video_full_range_flag = bs_read1( p_bs );
p_vui->vs.colour_description_present_flag = bs_read1( p_bs );
if( p_vui->vs.colour_description_present_flag )
{
p_vui->vs.colour.colour_primaries = bs_read( p_bs, 8 );
p_vui->vs.colour.transfer_characteristics = bs_read( p_bs, 8 );
p_vui->vs.colour.matrix_coeffs = bs_read( p_bs, 8 );
}
}
p_vui->chroma_loc_info_present_flag = bs_read1( p_bs );
if( p_vui->chroma_loc_info_present_flag )
{
p_vui->chroma.sample_loc_type_top_field = bs_read_ue( p_bs );
p_vui->chroma.sample_loc_type_bottom_field = bs_read_ue( p_bs );
}
p_vui->neutral_chroma_indication_flag = bs_read1( p_bs );
p_vui->field_seq_flag = bs_read1( p_bs );
p_vui->frame_field_info_present_flag = bs_read1( p_bs );
p_vui->default_display_window_flag = bs_read1( p_bs );
if( p_vui->default_display_window_flag )
{
p_vui->def_disp.win_left_offset = bs_read_ue( p_bs );
p_vui->def_disp.win_right_offset = bs_read_ue( p_bs );
p_vui->def_disp.win_top_offset = bs_read_ue( p_bs );
p_vui->def_disp.win_bottom_offset = bs_read_ue( p_bs );
}
p_vui->vui_timing_info_present_flag = bs_read1( p_bs );
if( p_vui->vui_timing_info_present_flag )
{
p_vui->timing.vui_num_units_in_tick = bs_read( p_bs, 32 );
p_vui->timing.vui_time_scale = bs_read( p_bs, 32 );
if( bs_remain( p_bs ) < 3 )
return false;
}
/* incomplete */
if( bs_remain( p_bs ) < 1 ) /* late fail */
return false;
return true;
}