// D.1 SEI payload syntax
void write_sei_payload(h264_stream_t* h, bs_t* b, int payloadType, int payloadSize)
{
sei_t* s = h->sei;
int i;
for ( i = 0; i < s->payloadSize; i++ )
bs_write_u(b, 8, s->payload[i]);
}
//This function assumes the values are set elsewhere.
static void write_sei_type_0(h264_stream_t* h, sei_t* s, bs_t* b) {
int sched_sel_idx;
sps_t *sps = h->sps;
sei_type_0 *bp = s->sei_type_struct;
if(sps->vui.nal_hrd_parameters_present_flag) {
for (sched_sel_idx = 0; sched_sel_idx < sps->hrd.cpb_cnt_minus1 + 1; sched_sel_idx++) {
bs_write_u(b, bp->initial_cbp_removal_delay[sched_sel_idx], h->sps->hrd.initial_cpb_removal_delay_length_minus1 + 1);
bs_write_u(b, bp->initial_cbp_removal_delay_offset[sched_sel_idx], sps->hrd.initial_cpb_removal_delay_length_minus1 + 1);
}
}
if (sps->vui.vcl_hrd_parameters_present_flag) {
for (sched_sel_idx = 0; sched_sel_idx < sps->hrd.cpb_cnt_minus1 + 1; sched_sel_idx++) {
bs_write_u(b, bp->initial_cbp_removal_delay[sched_sel_idx], h->sps->hrd.initial_cpb_removal_delay_length_minus1 + 1);
bs_write_u(b, bp->initial_cbp_removal_delay_offset[sched_sel_idx], sps->hrd.initial_cpb_removal_delay_length_minus1 + 1);
}
}
}
int write_avcc(avcc_t* avcc, h264_stream_t* h, bs_t* b)
{
bs_write_u8(b, 1); // configurationVersion = 1;
bs_write_u8(b, avcc->AVCProfileIndication);
bs_write_u8(b, avcc->profile_compatibility);
bs_write_u8(b, avcc->AVCLevelIndication);
bs_write_u(b, 6, 0x3F); // reserved = '111111'b;
bs_write_u(b, 2, avcc->lengthSizeMinusOne);
bs_write_u(b, 3, 0x07); // reserved = '111'b;
bs_write_u(b, 5, avcc->numOfSequenceParameterSets);
int i;
for (i = 0; i < avcc->numOfSequenceParameterSets; i++)
{
int max_len = 1024; // FIXME
uint8_t* buf = (uint8_t*)malloc(max_len);
h->nal->nal_ref_idc = 3; // NAL_REF_IDC_PRIORITY_HIGHEST;
h->nal->nal_unit_type = NAL_UNIT_TYPE_SPS;
h->sps = avcc->sps_table[i];
int len = write_nal_unit(h, buf, max_len);
if (len < 0) { free(buf); continue; } // TODO report errors
int sequenceParameterSetLength = len;
bs_write_u(b, 16, sequenceParameterSetLength);
bs_write_bytes(b, buf, len);
free(buf);
}
bs_write_u(b, 8, avcc->numOfPictureParameterSets);
for (i = 0; i < avcc->numOfPictureParameterSets; i++)
{
int max_len = 1024; // FIXME
uint8_t* buf = (uint8_t*)malloc(max_len);
h->nal->nal_ref_idc = 3; // NAL_REF_IDC_PRIORITY_HIGHEST;
h->nal->nal_unit_type = NAL_UNIT_TYPE_PPS;
h->pps = avcc->pps_table[i];
int len = write_nal_unit(h, buf, max_len);
if (len < 0) { free(buf); continue; } // TODO report errors
int pictureParameterSetLength = len;
bs_write_u(b, 16, pictureParameterSetLength);
bs_write_bytes(b, buf, len);
free(buf);
}
if (bs_overrun(b)) { return -1; }
return bs_pos(b);
}
// D.1 SEI payload syntax
void write_sei_payload( h264_stream_t* h, bs_t* b, int payloadType, int payloadSize)
{
sei_t* s = h->sei;
int i;
switch (payloadType) {
case SEI_TYPE_BUFFERING_PERIOD:
write_sei_type_0(h, s, b);
break;
case SEI_TYPE_PIC_TIMING:
//payloadSize = sizeof(sei_type_1)
write_sei_type_1(h, s, b);
break;
default:
for( i = 0; i < payloadSize; i++ )
{
bs_write_u(b, 8, s->payload[i]);
}
//Not implemented
break;
}
}
void bs_write_u8(bs_t* b, uint32_t v) { bs_write_u(b, 8, v); }
void bs_write_f(bs_t* b, int n, uint32_t v) { bs_write_u(b, n, v); }
int pes_header_write(pes_header_t *ph, bs_t *b) {
// TODO: add support for PES-level stuffing
int start_pos = bs_pos(b);
bs_write_u24(b, PES_PACKET_START_CODE_PREFIX);
bs_write_u8(b, ph->stream_id);
bs_write_u16(b, ph->PES_packet_length);
if (HAS_PES_HEADER(ph->stream_id)) {
bs_write_u(b, 2, 0x02);
bs_write_u(b, 2, ph->PES_scrambling_control);
bs_write_u1(b, ph->PES_priority);
bs_write_u1(b, ph->data_alignment_indicator);
bs_write_u1(b, ph->copyright);
bs_write_u1(b, ph->original_or_copy);
bs_write_u(b, 2, ph->PTS_DTS_flags);
bs_write_u1(b, ph->ESCR_flag);
bs_write_u1(b, ph->ES_rate_flag);
bs_write_u1(b, ph->DSM_trick_mode_flag);
bs_write_u1(b, ph->additional_copy_info_flag);
bs_write_u1(b, ph->PES_CRC_flag);
bs_write_u1(b, ph->PES_extension_flag);
bs_write_u8(b, ph->PES_header_data_length);
if (ph->PTS_DTS_flags & PES_PTS_FLAG) {
bs_write_u(b, 4, 0x02);
bs_write_90khz_timestamp(b, ph->PTS);
}
if (ph->PTS_DTS_flags & PES_DTS_FLAG) {
bs_write_u(b, 4, 0x01);
bs_write_90khz_timestamp(b, ph->DTS);
}
if (ph->ESCR_flag) {
bs_write_reserved(b, 2);
bs_write_90khz_timestamp(b, ph->ESCR_base);
bs_write_u(b, 9, ph->ESCR_extension);
bs_write_marker_bit(b);
}
if (ph->ES_rate_flag) {
bs_write_marker_bit(b);
bs_write_u(b, 22, ph->ES_rate);
bs_write_marker_bit(b);
}
if (ph->DSM_trick_mode_flag) {
bs_write_u(b, 3, ph->trick_mode_control);
switch (ph->trick_mode_control) {
case PES_DSM_TRICK_MODE_CTL_FAST_FORWARD:
case PES_DSM_TRICK_MODE_CTL_FAST_REVERSE:
bs_write_u(b, 2, ph->field_id);
bs_write_u1(b, ph->intra_slice_refresh);
bs_write_u(b, 2, ph->frequency_truncation);
break;
case PES_DSM_TRICK_MODE_CTL_SLOW_MOTION:
case PES_DSM_TRICK_MODE_CTL_SLOW_REVERSE:
bs_write_u(b, 5, ph->rep_cntrl);
break;
case PES_DSM_TRICK_MODE_CTL_FREEZE_FRAME:
bs_write_u(b, 2, ph->field_id);
bs_write_reserved(b, 3);
break;
default:
bs_write_reserved(b, 5);
break;
}
}
if (ph->additional_copy_info_flag) {
bs_write_marker_bit(b);
bs_write_u(b, 7, ph->additional_copy_info);
}
if (ph->PES_CRC_flag) {
bs_write_u16(b, ph->previous_PES_packet_CRC);
}
if (ph->PES_extension_flag) {
bs_write_u1(b, ph->PES_private_data_flag);
bs_write_u1(b, 0); // pack_header not supported
bs_write_u1(b, ph->program_packet_sequence_counter_flag);
bs_write_u1(b, ph->PSTD_buffer_flag);
bs_write_reserved(b, 3);
bs_write_u1(b, ph->PES_extension_flag_2);
if (ph->PES_private_data_flag) {
bs_write_bytes(b, ph->PES_private_data, 16);
}
if (ph->program_packet_sequence_counter_flag) {
bs_write_marker_bit(b);
bs_write_u(b, 7, ph->program_packet_sequence_counter);
bs_write_marker_bit(b);
bs_write_u1(b, ph->MPEG1_MPEG2_identifier);
bs_write_u(b, 6, ph->original_stuff_length);
}
if (ph->PSTD_buffer_flag) {
bs_write_u(b, 2, 0x01);
bs_write_u1(b, ph->PSTD_buffer_scale);
bs_write_u(b, 13, ph->PSTD_buffer_size);
}
if (ph->PES_extension_flag_2) {
bs_write_marker_bit(b);
bs_write_u(b, 7, ph->PES_extension_field_length);
bs_write_u1(b, ph->stream_id_extension_flag);
if (!ph->stream_id_extension_flag) {
bs_write_u(b, 7, ph->stream_id_extension);
} else {
bs_write_reserved(b, 6);
bs_write_u1(b, ph->tref_extension_flag);
if (ph->tref_extension_flag) {
bs_write_reserved(b, 4);
bs_write_90khz_timestamp(b, ph->TREF);
}
}
}
}
}
return (bs_pos(b) - start_pos);
}
// Appendix G.13.1.1 Scalability information SEI message syntax
void write_sei_scalability_info( h264_stream_t* h, bs_t* b )
{
sei_scalability_info_t* sei_svc = h->sei->sei_svc;
bs_write_u1(b, sei_svc->temporal_id_nesting_flag);
bs_write_u1(b, sei_svc->priority_layer_info_present_flag);
bs_write_u1(b, sei_svc->priority_id_setting_flag);
bs_write_ue(b, sei_svc->num_layers_minus1);
for( int i = 0; i <= sei_svc->num_layers_minus1; i++ ) {
bs_write_ue(b, sei_svc->layers[i].layer_id);
bs_write_u(b, 6, sei_svc->layers[i].priority_id);
bs_write_u1(b, sei_svc->layers[i].discardable_flag);
bs_write_u(b, 3, sei_svc->layers[i].dependency_id);
bs_write_u(b, 4, sei_svc->layers[i].quality_id);
bs_write_u(b, 3, sei_svc->layers[i].temporal_id);
bs_write_u1(b, sei_svc->layers[i].sub_pic_layer_flag);
bs_write_u1(b, sei_svc->layers[i].sub_region_layer_flag);
bs_write_u1(b, sei_svc->layers[i].iroi_division_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].profile_level_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].bitrate_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].frm_rate_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].frm_size_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].layer_dependency_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].parameter_sets_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].bitstream_restriction_info_present_flag);
bs_write_u1(b, sei_svc->layers[i].exact_inter_layer_pred_flag);
if( sei_svc->layers[i].sub_pic_layer_flag ||
sei_svc->layers[i].iroi_division_info_present_flag )
{
bs_write_u1(b, sei_svc->layers[i].exact_sample_value_match_flag);
}
bs_write_u1(b, sei_svc->layers[i].layer_conversion_flag);
bs_write_u1(b, sei_svc->layers[i].layer_output_flag);
if( sei_svc->layers[i].profile_level_info_present_flag )
{
bs_write_u(b, 24, sei_svc->layers[i].layer_profile_level_idc);
}
if( sei_svc->layers[i].bitrate_info_present_flag )
{
bs_write_u(b, 16, sei_svc->layers[i].avg_bitrate);
bs_write_u(b, 16, sei_svc->layers[i].max_bitrate_layer);
bs_write_u(b, 16, sei_svc->layers[i].max_bitrate_layer_representation);
bs_write_u(b, 16, sei_svc->layers[i].max_bitrate_calc_window);
}
if( sei_svc->layers[i].frm_rate_info_present_flag )
{
bs_write_u(b, 2, sei_svc->layers[i].constant_frm_rate_idc);
bs_write_u(b, 16, sei_svc->layers[i].avg_frm_rate);
}
if( sei_svc->layers[i].frm_size_info_present_flag ||
sei_svc->layers[i].iroi_division_info_present_flag )
{
bs_write_ue(b, sei_svc->layers[i].frm_width_in_mbs_minus1);
bs_write_ue(b, sei_svc->layers[i].frm_height_in_mbs_minus1);
}
if( sei_svc->layers[i].sub_region_layer_flag )
{
bs_write_ue(b, sei_svc->layers[i].base_region_layer_id);
bs_write_u1(b, sei_svc->layers[i].dynamic_rect_flag);
if( sei_svc->layers[i].dynamic_rect_flag )
{
bs_write_u(b, 16, sei_svc->layers[i].horizontal_offset);
bs_write_u(b, 16, sei_svc->layers[i].vertical_offset);
bs_write_u(b, 16, sei_svc->layers[i].region_width);
bs_write_u(b, 16, sei_svc->layers[i].region_height);
}
}
if( sei_svc->layers[i].sub_pic_layer_flag )
{
bs_write_ue(b, sei_svc->layers[i].roi_id);
}
if( sei_svc->layers[i].iroi_division_info_present_flag )
{
bs_write_u1(b, sei_svc->layers[i].iroi_grid_flag);
if( sei_svc->layers[i].iroi_grid_flag )
{
bs_write_ue(b, sei_svc->layers[i].grid_width_in_mbs_minus1);
bs_write_ue(b, sei_svc->layers[i].grid_height_in_mbs_minus1);
}
else
{
bs_write_ue(b, sei_svc->layers[i].num_rois_minus1);
for( int j = 0; j <= sei_svc->layers[i].num_rois_minus1; j++ )
{
bs_write_ue(b, sei_svc->layers[i].roi[j].first_mb_in_roi);
bs_write_ue(b, sei_svc->layers[i].roi[j].roi_width_in_mbs_minus1);
bs_write_ue(b, sei_svc->layers[i].roi[j].roi_height_in_mbs_minus1);
}
}
}
if( sei_svc->layers[i].layer_dependency_info_present_flag )
{
bs_write_ue(b, sei_svc->layers[i].num_directly_dependent_layers);
for( int j = 0; j < sei_svc->layers[i].num_directly_dependent_layers; j++ )
{
bs_write_ue(b, sei_svc->layers[i].directly_dependent_layer_id_delta_minus1[j]);
}
}
else
{
bs_write_ue(b, sei_svc->layers[i].layer_dependency_info_src_layer_id_delta);
}
if( sei_svc->layers[i].parameter_sets_info_present_flag )
{
bs_write_ue(b, sei_svc->layers[i].num_seq_parameter_sets);
for( int j = 0; j < sei_svc->layers[i].num_seq_parameter_sets; j++ )
{
bs_write_ue(b, sei_svc->layers[i].seq_parameter_set_id_delta[j]);
}
bs_write_ue(b, sei_svc->layers[i].num_subset_seq_parameter_sets);
for( int j = 0; j < sei_svc->layers[i].num_subset_seq_parameter_sets; j++ )
{
bs_write_ue(b, sei_svc->layers[i].subset_seq_parameter_set_id_delta[j]);
}
bs_write_ue(b, sei_svc->layers[i].num_pic_parameter_sets_minus1);
for( int j = 0; j < sei_svc->layers[i].num_pic_parameter_sets_minus1; j++ )
{
bs_write_ue(b, sei_svc->layers[i].pic_parameter_set_id_delta[j]);
}
}
else
{
bs_write_ue(b, sei_svc->layers[i].parameter_sets_info_src_layer_id_delta);
}
if( sei_svc->layers[i].bitstream_restriction_info_present_flag )
{
bs_write_u1(b, sei_svc->layers[i].motion_vectors_over_pic_boundaries_flag);
bs_write_ue(b, sei_svc->layers[i].max_bytes_per_pic_denom);
bs_write_ue(b, sei_svc->layers[i].max_bits_per_mb_denom);
bs_write_ue(b, sei_svc->layers[i].log2_max_mv_length_horizontal);
bs_write_ue(b, sei_svc->layers[i].log2_max_mv_length_vertical);
bs_write_ue(b, sei_svc->layers[i].max_num_reorder_frames);
bs_write_ue(b, sei_svc->layers[i].max_dec_frame_buffering);
}
if( sei_svc->layers[i].layer_conversion_flag )
{
bs_write_ue(b, sei_svc->layers[i].conversion_type_idc);
for( int j = 0; j < 2; j++ )
{
bs_write_u(b, 1, sei_svc->layers[i].rewriting_info_flag[j]);
if( sei_svc->layers[i].rewriting_info_flag[j] )
{
bs_write_u(b, 24, sei_svc->layers[i].rewriting_profile_level_idc[j]);
bs_write_u(b, 16, sei_svc->layers[i].rewriting_avg_bitrate[j]);
bs_write_u(b, 16, sei_svc->layers[i].rewriting_max_bitrate[j]);
}
}
}
}
if( sei_svc->priority_layer_info_present_flag )
{
bs_write_ue(b, sei_svc->pr_num_dIds_minus1);
for( int i = 0; i <= sei_svc->pr_num_dIds_minus1; i++ ) {
bs_write_u(b, 3, sei_svc->pr[i].pr_dependency_id);
bs_write_ue(b, sei_svc->pr[i].pr_num_minus1);
for( int j = 0; j <= sei_svc->pr[i].pr_num_minus1; j++ )
{
bs_write_ue(b, sei_svc->pr[i].pr_info[j].pr_id);
bs_write_u(b, 24, sei_svc->pr[i].pr_info[j].pr_profile_level_idc);
bs_write_u(b, 16, sei_svc->pr[i].pr_info[j].pr_avg_bitrate);
bs_write_u(b, 16, sei_svc->pr[i].pr_info[j].pr_max_bitrate);
}
}
}
}
static void write_sei_type_1(h264_stream_t* h, sei_t* s, bs_t* b) {
bs_t bs;
sps_t *sps = h->sps;
sei_type_1 *pt_struct = s->sei_type_struct;
if(sps->vui.nal_hrd_parameters_present_flag || sps->vui.vcl_hrd_parameters_present_flag) {
bs_write_u(b, pt_struct->cpb_removal_delay, sps->hrd.cpb_removal_delay_length_minus1 + 1);
bs_write_u(b, pt_struct->dpb_output_delay, sps->hrd.cpb_removal_delay_length_minus1 + 1);
}
if (sps->vui.pic_struct_present_flag) {
if (pt_struct->pic_struct > SEI_PIC_STRUCT_FRAME_TRIPLING) {
return;
}
bs_write_u(&bs, pt_struct->pic_struct, 4);
for (int i = 0; i < pt_struct->NumClockTS; i++) {
sei_type_1_pic_timing *pt = &pt_struct->timings[i];
bs_write_u(&bs, pt->clock_timestamp_flag, 1);
if (pt->clock_timestamp_flag) {
bs_write_u(&bs, pt->ct_type, 2);
bs_write_u(&bs, pt->nuit_field_based_flag, 1);
bs_write_u(&bs, pt->counting_type, 5);
bs_write_u(&bs, pt->full_timestamp_flag, 1);
bs_write_u(&bs, pt->discontinuity_flag, 1);
bs_write_u(&bs, pt->cnt_dropped_flag, 1);
bs_write_u(&bs, pt->n_frames, 8);
if (pt->full_timestamp_flag) {
bs_write_u(&bs, pt->seconds_value, 6);
bs_write_u(&bs, pt->minutes_value, 6);
bs_write_u(&bs, pt->hours_flag, 5);
}else {
bs_write_u(&bs, pt->seconds_flag, 1);
if (pt->seconds_flag) {
bs_write_u(&bs, pt->seconds_value, 6);
bs_write_u(&bs, pt->minutes_flag, 1);
if(pt->minutes_flag) {
bs_write_u(&bs, pt->minutes_value, 6);
bs_write_u(&bs, pt->hours_flag, 1);
if (pt->hours_flag) {
bs_write_u(&bs, pt->hours_value, 5);
}
}
}
}
if (sps->hrd.time_offset_length > 0) {
bs_write_u(&bs, pt->time_offset, sps->hrd.time_offset_length);
}
}
}
}
s->sei_type_struct = pt_struct;
}
