void x264_sei_pic_timing_write( x264_t *h, bs_t *s )
{
x264_sps_t *sps = h->sps;
bs_t q;
uint8_t tmp_buf[100];
bs_init( &q, tmp_buf, 100 );
bs_realign( &q );
if( sps->vui.b_nal_hrd_parameters_present || sps->vui.b_vcl_hrd_parameters_present )
{
bs_write( &q, sps->vui.hrd.i_cpb_removal_delay_length, h->fenc->i_cpb_delay - h->i_cpb_delay_pir_offset );
bs_write( &q, sps->vui.hrd.i_dpb_output_delay_length, h->fenc->i_dpb_output_delay );
}
if( sps->vui.b_pic_struct_present )
{
bs_write( &q, 4, h->fenc->i_pic_struct-1 ); // We use index 0 for "Auto"
// These clock timestamps are not standardised so we don't set them
// They could be time of origin, capture or alternative ideal display
for( int i = 0; i < num_clock_ts[h->fenc->i_pic_struct]; i++ )
bs_write1( &q, 0 ); // clock_timestamp_flag
}
bs_align_10( &q );
bs_flush( &q );
x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_PIC_TIMING );
}
static int write_rtp_pkt( hnd_t handle, uint8_t *data, int len, int64_t timestamp )
{
obe_rtp_ctx *p_rtp = handle;
uint8_t pkt[RTP_HEADER_SIZE+TS_PACKETS_SIZE];
bs_t s;
bs_init( &s, pkt, RTP_HEADER_SIZE+TS_PACKETS_SIZE );
bs_write( &s, 2, RTP_VERSION ); // version
bs_write1( &s, 0 ); // padding
bs_write1( &s, 0 ); // extension
bs_write( &s, 4, 0 ); // CSRC count
bs_write1( &s, 0 ); // marker
bs_write( &s, 7, MPEG_TS_PAYLOAD_TYPE ); // payload type
bs_write( &s, 16, p_rtp->seq++ ); // sequence number
bs_write32( &s, timestamp / 300 ); // timestamp
bs_write32( &s, p_rtp->ssrc ); // ssrc
bs_flush( &s );
memcpy( &pkt[RTP_HEADER_SIZE], data, len );
if( udp_write( p_rtp->udp_handle, pkt, RTP_HEADER_SIZE+TS_PACKETS_SIZE ) < 0 )
return -1;
p_rtp->pkt_cnt++;
p_rtp->octet_cnt += len;
return 0;
}
void x264_sei_pic_timing_write( x264_t *h, bs_t *s )
{
x264_sps_t *sps = h->sps;
bs_realign( s );
uint8_t *p_start = x264_sei_write_header( s, SEI_PIC_TIMING );
if( sps->vui.b_nal_hrd_parameters_present || sps->vui.b_vcl_hrd_parameters_present )
{
bs_write( s, sps->vui.hrd.i_cpb_removal_delay_length, h->fenc->i_cpb_delay );
bs_write( s, sps->vui.hrd.i_dpb_output_delay_length, h->fenc->i_dpb_output_delay );
}
if( sps->vui.b_pic_struct_present )
{
bs_write( s, 4, h->fenc->i_pic_struct-1 ); // We use index 0 for "Auto"
// These clock timestamps are not standardised so we don't set them
// They could be time of origin, capture or alternative ideal display
for( int i = 0; i < num_clock_ts[h->fenc->i_pic_struct]; i++ )
bs_write1( s, 0 ); // clock_timestamp_flag
}
x264_sei_write( s, p_start );
bs_flush( s );
}
static int write_rtcp_pkt( hnd_t handle )
{
obe_rtp_ctx *p_rtp = handle;
uint64_t ntp_time = obe_ntp_time();
uint8_t pkt[100];
bs_t s;
bs_init( &s, pkt, RTCP_PACKET_SIZE );
bs_write( &s, 2, RTP_VERSION ); // version
bs_write1( &s, 0 ); // padding
bs_write( &s, 5, 0 ); // reception report count
bs_write( &s, 8, RTCP_SR_PACKET_TYPE ); // packet type
bs_write( &s, 8, 6 ); // length (length in words - 1)
bs_write32( &s, p_rtp->ssrc ); // ssrc
bs_write32( &s, ntp_time / 1000000 ); // NTP timestamp, most significant word
bs_write32( &s, ((ntp_time % 1000000) << 32) / 1000000 ); // NTP timestamp, least significant word
bs_write32( &s, 0 ); // RTP timestamp FIXME
bs_write32( &s, p_rtp->pkt_cnt ); // sender's packet count
bs_write32( &s, p_rtp->octet_cnt ); // sender's octet count
bs_flush( &s );
if( udp_write( p_rtp->udp_handle, pkt, RTCP_PACKET_SIZE ) < 0 )
return -1;
return 0;
}
void x264_filler_write( x264_t *h, bs_t *s, int filler )
{
bs_realign( s );
for( int i = 0; i < filler; i++ )
bs_write( s, 8, 0xff );
bs_rbsp_trailing( s );
bs_flush( s );
}
static void x264_sei_write( bs_t *s, uint8_t *p_start )
{
bs_align_10( s );
bs_flush( s );
p_start[0] = s->p - p_start - 1; // -1 for the length byte
bs_realign( s );
bs_rbsp_trailing( s );
}
static void write_bytes( bs_t *s, uint8_t *bytes, int length )
{
bs_flush( s );
uint8_t *p_start = s->p_start;
memcpy( s->p, bytes, length );
s->p += length;
bs_init( s, s->p, s->p_end - s->p );
s->p_start = p_start;
}
static uint8_t *x264_sei_write_header( bs_t *s, int payload_type )
{
bs_write( s, 8, payload_type );
bs_flush( s );
uint8_t *p_start = s->p;
bs_realign( s );
bs_write( s, 8, 0 );
return p_start;
}
void x264_sei_recovery_point_write( x264_t *h, bs_t *s, int recovery_frame_cnt )
{
bs_realign( s );
uint8_t *p_start = x264_sei_write_header( s, SEI_RECOVERY_POINT );
bs_write_ue( s, recovery_frame_cnt ); // recovery_frame_cnt
bs_write( s, 1, 1 ); //exact_match_flag 1
bs_write( s, 1, 0 ); //broken_link_flag 0
bs_write( s, 2, 0 ); //changing_slice_group 0
x264_sei_write( s, p_start );
bs_flush( s );
}
static int write_708_cc( obe_user_data_t *user_data, uint8_t *start, int cc_count )
{
bs_t s;
uint8_t temp[1000];
const char *user_identifier = "GA94";
const int data_type_code = 0x03;
/* TODO: when MPEG-2 is added make this do the right thing */
/* FIXME: enable echostar captions and add more types */
bs_init( &s, temp, 1000 );
/* N.B MPEG-4 only */
write_itu_t_codes( &s );
for( int i = 0; i < 4; i++ )
bs_write( &s, 8, user_identifier[i] ); // user_identifier
bs_write( &s, 8, data_type_code ); // user_data_type_code
// user_data_type_structure (echostar)
// cc_data
bs_write1( &s, 1 ); // reserved
bs_write1( &s, 1 ); // process_cc_data_flag
bs_write1( &s, 0 ); // zero_bit / additional_data_flag
bs_write( &s, 5, cc_count ); // cc_count
bs_write( &s, 8, 0xff ); // reserved
write_bytes( &s, start, cc_count*3 );
bs_write( &s, 8, 0xff ); // marker_bits
bs_flush( &s );
user_data->type = USER_DATA_AVC_REGISTERED_ITU_T35;
user_data->len = bs_pos( &s ) >> 3;
free( user_data->data );
user_data->data = malloc( user_data->len );
if( !user_data->data )
{
syslog( LOG_ERR, "Malloc failed\n" );
return -1;
}
memcpy( user_data->data, temp, user_data->len );
return 0;
}
void x264_pps_write( bs_t *s, x264_pps_t *pps )
{
bs_realign( s );
bs_write_ue( s, pps->i_id );
bs_write_ue( s, pps->i_sps_id );
bs_write1( s, pps->b_cabac );
bs_write1( s, pps->b_pic_order );
bs_write_ue( s, pps->i_num_slice_groups - 1 );
bs_write_ue( s, pps->i_num_ref_idx_l0_default_active - 1 );
bs_write_ue( s, pps->i_num_ref_idx_l1_default_active - 1 );
bs_write1( s, pps->b_weighted_pred );
bs_write( s, 2, pps->b_weighted_bipred );
bs_write_se( s, pps->i_pic_init_qp - 26 - QP_BD_OFFSET );
bs_write_se( s, pps->i_pic_init_qs - 26 - QP_BD_OFFSET );
bs_write_se( s, pps->i_chroma_qp_index_offset );
bs_write1( s, pps->b_deblocking_filter_control );
bs_write1( s, pps->b_constrained_intra_pred );
bs_write1( s, pps->b_redundant_pic_cnt );
if( pps->b_transform_8x8_mode || pps->i_cqm_preset != X264_CQM_FLAT )
{
bs_write1( s, pps->b_transform_8x8_mode );
bs_write1( s, (pps->i_cqm_preset != X264_CQM_FLAT) );
if( pps->i_cqm_preset != X264_CQM_FLAT )
{
scaling_list_write( s, pps, CQM_4IY );
scaling_list_write( s, pps, CQM_4IC );
bs_write1( s, 0 ); // Cr = Cb
scaling_list_write( s, pps, CQM_4PY );
scaling_list_write( s, pps, CQM_4PC );
bs_write1( s, 0 ); // Cr = Cb
if( pps->b_transform_8x8_mode )
{
scaling_list_write( s, pps, CQM_8IY+4 );
scaling_list_write( s, pps, CQM_8PY+4 );
}
}
bs_write_se( s, pps->i_chroma_qp_index_offset );
}
bs_rbsp_trailing( s );
bs_flush( s );
}
void x264_sei_buffering_period_write( x264_t *h, bs_t *s )
{
x264_sps_t *sps = h->sps;
bs_realign( s );
uint8_t *p_start = x264_sei_write_header( s, SEI_BUFFERING_PERIOD );
bs_write_ue( s, sps->i_id );
if( sps->vui.b_nal_hrd_parameters_present )
{
bs_write( s, sps->vui.hrd.i_initial_cpb_removal_delay_length, h->initial_cpb_removal_delay );
bs_write( s, sps->vui.hrd.i_initial_cpb_removal_delay_length, h->initial_cpb_removal_delay_offset );
}
x264_sei_write( s, p_start );
bs_flush( s );
}
int x264_sei_version_write( x264_t *h, bs_t *s )
{
int i;
// random ID number generated according to ISO-11578
static const uint8_t uuid[16] =
{
0xdc, 0x45, 0xe9, 0xbd, 0xe6, 0xd9, 0x48, 0xb7,
0x96, 0x2c, 0xd8, 0x20, 0xd9, 0x23, 0xee, 0xef
};
char *opts = x264_param2string( &h->param, 0 );
char *version;
int length;
if( !opts )
return -1;
CHECKED_MALLOC( version, 200 + strlen( opts ) );
sprintf( version, "x264 - core %d%s - H.264/MPEG-4 AVC codec - "
"Copyleft 2003-2010 - http://www.videolan.org/x264.html - options: %s",
X264_BUILD, X264_VERSION, opts );
length = strlen(version)+1+16;
bs_realign( s );
bs_write( s, 8, SEI_USER_DATA_UNREGISTERED );
// payload_size
for( i = 0; i <= length-255; i += 255 )
bs_write( s, 8, 255 );
bs_write( s, 8, length-i );
for( int j = 0; j < 16; j++ )
bs_write( s, 8, uuid[j] );
for( int j = 0; j < length-16; j++ )
bs_write( s, 8, version[j] );
bs_rbsp_trailing( s );
bs_flush( s );
x264_free( opts );
x264_free( version );
return 0;
fail:
x264_free( opts );
return -1;
}
void x264_sei_recovery_point_write( x264_t *h, bs_t *s, int recovery_frame_cnt )
{
bs_t q;
uint8_t tmp_buf[100];
bs_init( &q, tmp_buf, 100 );
bs_realign( &q );
bs_write_ue( &q, recovery_frame_cnt ); // recovery_frame_cnt
bs_write1( &q, 1 ); //exact_match_flag 1
bs_write1( &q, 0 ); //broken_link_flag 0
bs_write( &q, 2, 0 ); //changing_slice_group 0
bs_align_10( &q );
bs_flush( &q );
x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_RECOVERY_POINT );
}
void x264_sei_write( bs_t *s, uint8_t *payload, int payload_size, int payload_type )
{
int i;
bs_realign( s );
for( i = 0; i <= payload_type-255; i += 255 )
bs_write( s, 8, 255 );
bs_write( s, 8, payload_type-i );
for( i = 0; i <= payload_size-255; i += 255 )
bs_write( s, 8, 255 );
bs_write( s, 8, payload_size-i );
for( i = 0; i < payload_size; i++ )
bs_write( s, 8, payload[i] );
bs_rbsp_trailing( s );
bs_flush( s );
}
void x264_sei_buffering_period_write( x264_t *h, bs_t *s )
{
x264_sps_t *sps = h->sps;
bs_t q;
uint8_t tmp_buf[100];
bs_init( &q, tmp_buf, 100 );
bs_realign( &q );
bs_write_ue( &q, sps->i_id );
if( sps->vui.b_nal_hrd_parameters_present )
{
bs_write( &q, sps->vui.hrd.i_initial_cpb_removal_delay_length, h->initial_cpb_removal_delay );
bs_write( &q, sps->vui.hrd.i_initial_cpb_removal_delay_length, h->initial_cpb_removal_delay_offset );
}
bs_align_10( &q );
bs_flush( &q );
x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_BUFFERING_PERIOD );
}
void x264_sei_frame_packing_write( x264_t *h, bs_t *s )
{
bs_t q;
uint8_t tmp_buf[100];
bs_init( &q, tmp_buf, 100 );
bs_realign( &q );
bs_write_ue( &q, 0 ); // frame_packing_arrangement_id
bs_write1( &q, 0 ); // frame_packing_arrangement_cancel_flag
bs_write ( &q, 7, h->param.i_frame_packing ); // frame_packing_arrangement_type
bs_write1( &q, 0 ); // quincunx_sampling_flag
// 0: views are unrelated, 1: left view is on the left, 2: left view is on the right
bs_write ( &q, 6, 1 ); // content_interpretation_type
bs_write1( &q, 0 ); // spatial_flipping_flag
bs_write1( &q, 0 ); // frame0_flipped_flag
bs_write1( &q, 0 ); // field_views_flag
bs_write1( &q, h->param.i_frame_packing == 5 && !(h->fenc->i_frame&1) ); // current_frame_is_frame0_flag
bs_write1( &q, 0 ); // frame0_self_contained_flag
bs_write1( &q, 0 ); // frame1_self_contained_flag
if ( /* quincunx_sampling_flag == 0 && */ h->param.i_frame_packing != 5 )
{
bs_write( &q, 4, 0 ); // frame0_grid_position_x
bs_write( &q, 4, 0 ); // frame0_grid_position_y
bs_write( &q, 4, 0 ); // frame1_grid_position_x
bs_write( &q, 4, 0 ); // frame1_grid_position_y
}
bs_write( &q, 8, 0 ); // frame_packing_arrangement_reserved_byte
bs_write_ue( &q, 1 ); // frame_packing_arrangement_repetition_period
bs_write1( &q, 0 ); // frame_packing_arrangement_extension_flag
bs_align_10( &q );
bs_flush( &q );
x264_sei_write( s, tmp_buf, bs_pos( &q ) / 8, SEI_FRAME_PACKING );
}
void x264_vp8_slice_header_write( x264_t *h, bs_t *s, x264_slice_header_t *sh )
{
int chroma_qp_delta = h->chroma_qp_table[sh->i_qp] - sh->i_qp;
int filter_level = sh->i_disable_deblocking_filter_idc ? 0 : x264_vp8_deblock_level_table[sh->i_qp];
int keyframe = sh->i_idr_pic_id >= 0;
int header_byte = (!keyframe << 0)
+ (0 /* regular profile */ << 1)
+ (1 /* not invisible */ << 4);
h->vp8.header_ptr = s->p;
/* We go back and fix this later. */
int header_size = 0;
int header = (header_size << 5) + header_byte;
/* Stupid little-endian headers */
bs_write( s, 8, (header>> 0)&0xff );
bs_write( s, 8, (header>> 8)&0xff );
bs_write( s, 8, (header>>16) );
if( keyframe )
{
/* Startcode */
bs_write( s, 24, 0x9d012a );
/* Fixme: make sure to cap resolutions at 0x3fff to avoid hscale/vscale */
bs_write( s, 8, h->param.i_width&0xff );
bs_write( s, 8, h->param.i_width>>8 );
bs_write( s, 8, h->param.i_height&0xff );
bs_write( s, 8, h->param.i_height>>8 );
}
bs_flush( s );
x264_vp8rac_t *cb = &h->vp8.header_rac;
x264_vp8rac_encode_init( cb, s->p, s->p_end );
if( keyframe )
{
x264_vp8rac_encode_bypass( cb, 0 ); /* colorspace */
x264_vp8rac_encode_bypass( cb, 0 ); /* don't skip DSP clamping */
}
x264_vp8rac_encode_bypass( cb, 0 ); /* no segmentation for now */
x264_vp8rac_encode_bypass( cb, 0 ); /* normal filter
* TODO: simple filter */
x264_vp8rac_encode_uint_bypass( cb, filter_level, 6 ); /* filter level */
x264_vp8rac_encode_uint_bypass( cb, 0, 3 ); /* filter sharpness */
x264_vp8rac_encode_bypass( cb, 0 ); /* no lf deltas */
x264_vp8rac_encode_uint_bypass( cb, 0, 2 ); /* No bitstream partitions */
/* TODO: use correct deltas for dc/chroma blocks */
x264_vp8rac_encode_uint_bypass( cb, sh->i_qp, 7 ); /* yac_qi */
x264_vp8rac_encode_sint_bypass( cb, 0, 4 ); /* ydc_delta */
x264_vp8rac_encode_sint_bypass( cb, 0, 4 ); /* y2dc_delta */
x264_vp8rac_encode_sint_bypass( cb, 0, 4 ); /* y2ac_delta */
x264_vp8rac_encode_sint_bypass( cb, chroma_qp_delta, 4 ); /* uvdc_delta */
x264_vp8rac_encode_sint_bypass( cb, chroma_qp_delta, 4 ); /* uvac_delta */
if( !keyframe )
{
x264_vp8rac_encode_bypass( cb, 1 ); /* Update golden with current frame */
x264_vp8rac_encode_bypass( cb, 1 ); /* Update altref with current frame */
x264_vp8rac_encode_bypass( cb, 0 ); /* No golden sign bias */
x264_vp8rac_encode_bypass( cb, 0 ); /* No altref sign bias */
}
x264_vp8rac_encode_bypass( cb, 0 ); /* don't save updated probability tables */
if( !keyframe )
x264_vp8rac_encode_bypass( cb, 1 ); /* This frame is referenced, update the last ref */
/* Let's not update probabilities yet */
for( int i = 0; i < 4; i++ )
for( int j = 0; j < 8; j++ )
for( int k = 0; k < 3; k++ )
for( int l = 0; l < NUM_DCT_TOKENS-1; l++ )
x264_vp8rac_encode_decision( cb, x264_vp8_dct_update_probs[i][j][k][l], 0 );
x264_vp8rac_encode_bypass( cb, 1 ); /* mb skip enabled */
x264_vp8rac_encode_uint_bypass( cb, 0x80, 8 ); /* Just set even probability for now. */
if( !keyframe )
{
x264_vp8rac_encode_uint_bypass( cb, 0x80, 8 ); /* Even intra mb probability */
x264_vp8rac_encode_uint_bypass( cb, 0x80, 8 ); /* Even last ref probability */
x264_vp8rac_encode_uint_bypass( cb, 0x80, 8 ); /* Even golden ref probability */
x264_vp8rac_encode_bypass( cb, 0 ); /* Don't update I16x16 mode probabilities */
x264_vp8rac_encode_bypass( cb, 0 ); /* Don't update chroma intra mode probabilities */
/* Don't update MV probabilities */
for( int i = 0; i < 2; i++ )
for( int j = 0; j < 19; j++ )
x264_vp8rac_encode_decision( cb, x264_vp8_mv_update_probs[i][j], 0 );
}
}
/* TODO: factor shared code out from 608 and 708 */
int write_608_cc( obe_user_data_t *user_data, obe_raw_frame_t *raw_frame )
{
bs_t q, r;
uint8_t temp[1000];
uint8_t temp2[500];
const char *user_identifier = "GA94";
const int data_type_code = 0x03;
int cc_count = 0;
const int echostar_captions = 0;
/* TODO: when MPEG-2 is added make this do the right thing */
/* FIXME: enable echostar captions and add more types */
for( int i = 0; cc_timecode[i].timebase_num != 0; i++ )
{
if( raw_frame->timebase_num == cc_timecode[i].timebase_num && raw_frame->timebase_den == cc_timecode[i].timebase_den )
cc_count = cc_timecode[i].cc_count;
}
if( !cc_count )
{
syslog( LOG_ERR, "[cc]: Unsupported framerate for captions\n" );
return -1;
}
bs_init( &r, temp, 1000 );
/* N.B MPEG-4 only */
write_itu_t_codes( &r );
if( !echostar_captions )
{
for( int i = 0; i < 4; i++ )
bs_write( &r, 8, user_identifier[i] ); // user_identifier
}
bs_write( &r, 8, data_type_code ); // user_data_type_code
bs_init( &q, temp2, 500 );
// user_data_type_structure (echostar)
// cc_data
bs_write1( &q, 1 ); // reserved
bs_write1( &q, 1 ); // process_cc_data_flag
bs_write1( &q, 0 ); // zero_bit / additional_data_flag
bs_write( &q, 5, cc_count ); // cc_count
bs_write( &q, 8, 0xff ); // reserved
for( int i = 0; i < cc_count; i++ )
{
bs_write1( &q, 1 ); // one_bit
bs_write( &q, 4, 0xf ); // reserved
if( i <= 1 && user_data->len >= (i+1)*2 )
{
bs_write1( &q, 1 ); // cc_valid
bs_write( &q, 2, i ); // cc_type
bs_write( &q, 8, user_data->data[2*i] ); // c_data_1
bs_write( &q, 8, user_data->data[2*i+1] ); // c_data_2
}
else /* nothing to write so maintain a constant bitrate */
write_invalid( &q );
}
bs_write( &q, 8, 0xff ); // marker_bits
bs_flush( &q );
if( echostar_captions )
{
// ATSC1_data
bs_write( &r, 8, bs_pos( &q ) >> 3 ); // user_data_code_length
}
write_bytes( &r, temp2, bs_pos( &q ) >> 3 );
bs_flush( &r );
user_data->type = USER_DATA_AVC_REGISTERED_ITU_T35;
user_data->len = bs_pos( &r ) >> 3;
free( user_data->data );
user_data->data = malloc( user_data->len );
if( !user_data->data )
{
syslog( LOG_ERR, "Malloc failed\n" );
return -1;
}
memcpy( user_data->data, temp, user_data->len );
return 0;
}
void x264_sps_write( bs_t *s, x264_sps_t *sps )
{
bs_realign( s );
bs_write( s, 8, sps->i_profile_idc );
bs_write1( s, sps->b_constraint_set0 );
bs_write1( s, sps->b_constraint_set1 );
bs_write1( s, sps->b_constraint_set2 );
bs_write1( s, sps->b_constraint_set3 );
bs_write( s, 4, 0 ); /* reserved */
bs_write( s, 8, sps->i_level_idc );
bs_write_ue( s, sps->i_id );
if( sps->i_profile_idc >= PROFILE_HIGH )
{
bs_write_ue( s, 1 ); // chroma_format_idc = 4:2:0
bs_write_ue( s, BIT_DEPTH-8 ); // bit_depth_luma_minus8
bs_write_ue( s, BIT_DEPTH-8 ); // bit_depth_chroma_minus8
bs_write1( s, sps->b_qpprime_y_zero_transform_bypass );
bs_write1( s, 0 ); // seq_scaling_matrix_present_flag
}
bs_write_ue( s, sps->i_log2_max_frame_num - 4 );
bs_write_ue( s, sps->i_poc_type );
if( sps->i_poc_type == 0 )
{
bs_write_ue( s, sps->i_log2_max_poc_lsb - 4 );
}
else if( sps->i_poc_type == 1 )
{
bs_write1( s, sps->b_delta_pic_order_always_zero );
bs_write_se( s, sps->i_offset_for_non_ref_pic );
bs_write_se( s, sps->i_offset_for_top_to_bottom_field );
bs_write_ue( s, sps->i_num_ref_frames_in_poc_cycle );
for( int i = 0; i < sps->i_num_ref_frames_in_poc_cycle; i++ )
bs_write_se( s, sps->i_offset_for_ref_frame[i] );
}
bs_write_ue( s, sps->i_num_ref_frames );
bs_write1( s, sps->b_gaps_in_frame_num_value_allowed );
bs_write_ue( s, sps->i_mb_width - 1 );
bs_write_ue( s, (sps->i_mb_height >> !sps->b_frame_mbs_only) - 1);
bs_write1( s, sps->b_frame_mbs_only );
if( !sps->b_frame_mbs_only )
bs_write1( s, sps->b_mb_adaptive_frame_field );
bs_write1( s, sps->b_direct8x8_inference );
bs_write1( s, sps->b_crop );
if( sps->b_crop )
{
bs_write_ue( s, sps->crop.i_left / 2 );
bs_write_ue( s, sps->crop.i_right / 2 );
bs_write_ue( s, sps->crop.i_top / 2 );
bs_write_ue( s, sps->crop.i_bottom / 2 );
}
bs_write1( s, sps->b_vui );
if( sps->b_vui )
{
bs_write1( s, sps->vui.b_aspect_ratio_info_present );
if( sps->vui.b_aspect_ratio_info_present )
{
int i;
static const struct { uint8_t w, h, sar; } sar[] =
{
// aspect_ratio_idc = 0 -> unspecified
{ 1, 1, 1 }, { 12, 11, 2 }, { 10, 11, 3 }, { 16, 11, 4 },
{ 40, 33, 5 }, { 24, 11, 6 }, { 20, 11, 7 }, { 32, 11, 8 },
{ 80, 33, 9 }, { 18, 11, 10}, { 15, 11, 11}, { 64, 33, 12},
{160, 99, 13}, { 4, 3, 14}, { 3, 2, 15}, { 2, 1, 16},
// aspect_ratio_idc = [17..254] -> reserved
{ 0, 0, 255 }
};
for( i = 0; sar[i].sar != 255; i++ )
{
if( sar[i].w == sps->vui.i_sar_width &&
sar[i].h == sps->vui.i_sar_height )
break;
}
bs_write( s, 8, sar[i].sar );
if( sar[i].sar == 255 ) /* aspect_ratio_idc (extended) */
{
bs_write( s, 16, sps->vui.i_sar_width );
bs_write( s, 16, sps->vui.i_sar_height );
}
}
bs_write1( s, sps->vui.b_overscan_info_present );
if( sps->vui.b_overscan_info_present )
bs_write1( s, sps->vui.b_overscan_info );
bs_write1( s, sps->vui.b_signal_type_present );
if( sps->vui.b_signal_type_present )
{
bs_write( s, 3, sps->vui.i_vidformat );
bs_write1( s, sps->vui.b_fullrange );
bs_write1( s, sps->vui.b_color_description_present );
if( sps->vui.b_color_description_present )
{
bs_write( s, 8, sps->vui.i_colorprim );
bs_write( s, 8, sps->vui.i_transfer );
bs_write( s, 8, sps->vui.i_colmatrix );
}
}
bs_write1( s, sps->vui.b_chroma_loc_info_present );
if( sps->vui.b_chroma_loc_info_present )
{
bs_write_ue( s, sps->vui.i_chroma_loc_top );
bs_write_ue( s, sps->vui.i_chroma_loc_bottom );
}
bs_write1( s, sps->vui.b_timing_info_present );
if( sps->vui.b_timing_info_present )
{
bs_write32( s, sps->vui.i_num_units_in_tick );
bs_write32( s, sps->vui.i_time_scale );
bs_write1( s, sps->vui.b_fixed_frame_rate );
}
bs_write1( s, sps->vui.b_nal_hrd_parameters_present );
if( sps->vui.b_nal_hrd_parameters_present )
{
bs_write_ue( s, sps->vui.hrd.i_cpb_cnt - 1 );
bs_write( s, 4, sps->vui.hrd.i_bit_rate_scale );
bs_write( s, 4, sps->vui.hrd.i_cpb_size_scale );
bs_write_ue( s, sps->vui.hrd.i_bit_rate_value - 1 );
bs_write_ue( s, sps->vui.hrd.i_cpb_size_value - 1 );
bs_write1( s, sps->vui.hrd.b_cbr_hrd );
bs_write( s, 5, sps->vui.hrd.i_initial_cpb_removal_delay_length - 1 );
bs_write( s, 5, sps->vui.hrd.i_cpb_removal_delay_length - 1 );
bs_write( s, 5, sps->vui.hrd.i_dpb_output_delay_length - 1 );
bs_write( s, 5, sps->vui.hrd.i_time_offset_length );
}
bs_write1( s, sps->vui.b_vcl_hrd_parameters_present );
if( sps->vui.b_nal_hrd_parameters_present || sps->vui.b_vcl_hrd_parameters_present )
bs_write1( s, 0 ); /* low_delay_hrd_flag */
bs_write1( s, sps->vui.b_pic_struct_present );
bs_write1( s, sps->vui.b_bitstream_restriction );
if( sps->vui.b_bitstream_restriction )
{
bs_write1( s, sps->vui.b_motion_vectors_over_pic_boundaries );
bs_write_ue( s, sps->vui.i_max_bytes_per_pic_denom );
bs_write_ue( s, sps->vui.i_max_bits_per_mb_denom );
bs_write_ue( s, sps->vui.i_log2_max_mv_length_horizontal );
bs_write_ue( s, sps->vui.i_log2_max_mv_length_vertical );
bs_write_ue( s, sps->vui.i_num_reorder_frames );
bs_write_ue( s, sps->vui.i_max_dec_frame_buffering );
}
}
bs_rbsp_trailing( s );
bs_flush( s );
}
