kopia lustrzana https://github.com/kierank/libmpegts
Add DVB code.
Kieran Kunhya
rodzic
353a7ea1af
commit
08cba957ea
221
dvb/dvb.c
221
dvb/dvb.c
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@ -22,6 +22,26 @@
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#include "dvb.h"
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/**** PMT Second Loop Descriptors ****/
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void write_aac_descriptor( bs_t *s, ts_int_stream_t *stream )
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{
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bs_write( s, 8, DVB_AAC_DESCRIPTOR_TAG ); // descriptor_tag
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bs_write( s, 8, 1 ); // descriptor_length
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bs_write( s, 8, stream->aac_profile ); // profile_and_level
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}
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void write_adaptation_field_data_descriptor( bs_t *s, uint8_t identifier )
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{
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bs_write( s, 8, DVB_ADAPTATION_FIELD_DATA_DESCRIPTOR ); // descriptor_tag
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bs_write( s, 8, 1 ); // descriptor_length
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bs_write( s, 8, identifier ); // adaptation_field_data_identifier
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}
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void write_dvb_subtitling_descriptor( bs_t *s )
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{
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bs_write( s, 8, DVB_SUBTITLING_DESCRIPTOR_TAG ); // descriptor_tag
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bs_write( s, 8, 0 ); // descriptor_length FIXME
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}
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void write_stream_identifier_descriptor( bs_t *s, uint8_t stream_identifier )
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{
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bs_write( s, 8, DVB_STREAM_IDENTIFIER_DESCRIPTOR_TAG ); // descriptor_tag
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@ -29,7 +49,188 @@ void write_stream_identifier_descriptor( bs_t *s, uint8_t stream_identifier )
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bs_write( s, 8, stream_identifier ); // component_tag
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}
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void write_dvb_au_information( ts_writer_t *w, bs_t *s, ts_int_stream_t *stream, ts_int_frame_t *frame )
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void write_teletext_descriptor( bs_t *s )
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{
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bs_write( s, 8, DVB_TELETEXT_DESCRIPTOR_TAG ); // descriptor_tag
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bs_write( s, 8, 0 ); // descriptor_length
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// FIXME
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}
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/*
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static void write_service_descriptor( bs_t *s )
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{
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bs_write( s, 8, DVB_SERVICE_DESCRIPTOR_TAG ); // descriptor_tag
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bs_write( s, 8, 0 ); // descriptor_length
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bs_write( s, 8, 0 ); // service_type
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bs_write( s, 8, 0 ); // service_provider_name_length
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// TODO support more character codes
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while( *provider_name != '\0' )
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bs_write( s, 8, *provider_name++ );
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bs_write( s, 8, name_len ); // service_name_length
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while( *name != '\0' )
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bs_write( s, 8, *name++ );
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}
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*/
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/* DVB Service Information */
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void write_nit( ts_writer_t *w )
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{
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int start;
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bs_t *s = &w->out.bs;
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write_packet_header( w, 1, w->network_pid, PAYLOAD_ONLY, &w->nit->cc );
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bs_write( s, 8, 0 ); // pointer field
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start = bs_pos( s );
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bs_write( s, 8, NIT_TID ); // table_id = network_information_section
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bs_write1( s, 1 ); // section_syntax_indicator
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bs_write1( s, 1 ); // reserved_future_use
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bs_write( s, 2, 0x03 ); // reserved
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bs_write( s, 12, 0x13 ); // section_length
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bs_write( s, 16, w->network_id ); // network_id
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bs_write( s, 2, 0x02 ); // reserved
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bs_write( s, 5, 0 ); // version_number
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bs_write1( s, 1 ); // current_next_indicator
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bs_write(s, 8, 0 ); // section_number
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bs_write(s, 8, 0 ); // last_section_number
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bs_write(s, 4, 0xf ); // reserved_future_use
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bs_write(s, 12, 0 ); // network_descriptors_length
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// network descriptor(s) here
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bs_write(s, 4, 0xf ); // reserved_future_use
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bs_write(s, 12, 0 ); // transport_stream_loop_length
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bs_write( s, 16, w->ts_id ); // transport_stream_id
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bs_write( s, 16, w->network_id ); // original_network_id
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bs_write( s, 4, 0xf ); // reserved_future_use
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bs_write(s, 12, 0 ); // transport_descriptors_length
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// transport descriptor(s) here
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bs_flush( s );
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write_crc( s, start );
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// -40 to include header and pointer field
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write_padding( s, start - 40 );
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increase_pcr( w, 1 );
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}
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#if 0
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/* "The SDT contains data describing the services in the system e.g. names of services, the service provider, etc" */
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void write_sdt( ts_writer_t *w )
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{
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uint64_t start;
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int i;
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bs_t *s = &w->out.bs;
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write_packet_header( w, 1, SDT_PID, PAYLOAD_ONLY, &w->sdt->cc );
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bs_write( s, 8, 0 ); // pointer field
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start = bs_pos( s );
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bs_write( s, 8, SDT_TID ); // table_id
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bs_write1( s, 1 ); // section_syntax_indicator
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bs_write1( s, 1 ); // reserved_future_use
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bs_write1( s, 1 ); // reserved
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// TODO temp
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bs_write( s, 12, len ); // section_length
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bs_write( s, 16, w->ts_id ); // transport_stream_id
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bs_write( s, 2, 0x03 ); // reserved
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bs_write( s, 5, 0 ); // version_number
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bs_write1( s, 1 ); // current_next_indicator
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bs_write( s, 8, 0 ); // section_number
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bs_write( s, 8, 0 ); // last_section_number
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bs_write( s, 8, w->nid ); // original_network_id
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bs_write( s, 8, 0xff ); // reserved_future_use
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for( i = 0; i < w->num_programs; i++ )
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{
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bs_write( s, 16, w->programs[i]->program_num & 0xffff ); // service_id (equivalent to program_number)
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bs_write( s, 6, 0x7f ); // reserved_future_use
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bs_write1( s, 0 ); // EIT_schedule_flag
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bs_write1( s, 1 ); // EIT_present_following_flag
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bs_write( s, 3, 0 ); // running_status
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bs_write1( s, 1 ); // free_CA_mode
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int provider_name_len = strlen( w->programs[i]->sdt_ctx->provider_name );
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int name_len = strlen( w->programs[i]->sdt_ctx->service_name );
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char *provider_name = w->programs[i]->sdt_ctx->provider_name;
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char *name = w->programs[i]->sdt_ctx->service_name;
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int descriptors_len = 5 + provider_name_len + name_len;
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bs_write( s, 12, descriptors_len ); // descriptors_loop_length
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// service descriptor (mandatory for DVB)
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// other descriptor(s) here
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}
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bs_flush( s );
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write_crc( s, start );
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// -40 to include header and pointer field
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write_padding( s, start - 40 );
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increase_pcr( w, 1 );
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}
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// FIXME
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// "the EIT contains data concerning events or programmes such as event name, start time, duration, etc.; "
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void write_eit( ts_writer_t *w )
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{
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uint64_t start;
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bs_t *s = &w->out.bs;
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write_packet_header( w, 1, EIT_PID, PAYLOAD_ONLY, &w->eit->cc );
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bs_write( s, 8, 0 ); // pointer field
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start = bs_pos( s );
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bs_write( s, 8, EIT_TID ); // table_id
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bs_write1( s, 0 ); // section_syntax_indicator CHECKME
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bs_write1( s, 1 ); // reserved_future_use
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bs_write( s, 2, 0x03); // reserved
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bs_write( s, 12, len ); // section_length
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}
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// "the TDT gives information relating to the present time and date. This information is given in a separate
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// table due to the frequent updating of this information. "
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void write_tdt( ts_writer_t *w )
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{
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uint64_t start;
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bs_t *s = &w->out.bs;
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write_packet_header( w, 1, TDT_PID, PAYLOAD_ONLY, &w->tdt->cc );
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bs_write( s, 8, 0 ); // pointer field
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start = bs_pos( s );
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bs_write( s, 8, TDT_TID ); // table_id
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bs_write1( s, 0 ); // section_syntax_indicator
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bs_write1( s, 1 ); // reserved_future_use
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bs_write( s, 2, 0x03); // reserved
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bs_write( s, 12, 0x05); // section_length
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// FIXME
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bs_write( s, 4, & 0x0f ); //
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increase_pcr( w, 1 );
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}
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#endif
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// TODO TOT
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void write_dvb_au_information( bs_t *s, ts_int_pes_t *pes )
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{
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bs_t q;
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@ -42,7 +243,7 @@ void write_dvb_au_information( bs_t *s, ts_int_pes_t *pes )
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if( stream->stream_format == LIBMPEGTS_VIDEO_MPEG2 )
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bs_write( &q, 4, 1 ); // AU_coding_format
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else if( stream->stream_format == LIBMPEGTS_VIDEO_H264 )
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else if( stream->stream_format == LIBMPEGTS_VIDEO_AVC )
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bs_write( &q, 4, 0x2 ); // AU_coding_format
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bs_write( &q, 4, pes->frame_type ); // AU_coding_type_information
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@ -61,16 +262,16 @@ void write_dvb_au_information( bs_t *s, ts_int_pes_t *pes )
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bs_write( &q, 8, stream->mpegvideo_ctx->profile & 0xff ); // profile_idc
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if( stream->stream_format == LIBMPEGTS_VIDEO_H264 )
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if( stream->stream_format == LIBMPEGTS_VIDEO_AVC )
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{
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bs_write1( &q, stream->mpegvideo_ctx->profile == H264_BASELINE ); // constraint_set0_flag
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bs_write1( &q, stream->mpegvideo_ctx->profile <= H264_MAIN ); // constraint_set1_flag
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bs_write1( &q, stream->mpegvideo_ctx->profile == AVC_BASELINE ); // constraint_set0_flag
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bs_write1( &q, stream->mpegvideo_ctx->profile <= AVC_MAIN ); // constraint_set1_flag
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bs_write1( &q, 0 ); // constraint_set2_flag
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if( stream->mpegvideo_ctx->level == 9 && stream->mpegvideo_ctx->profile <= H264_MAIN ) // level 1b
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if( stream->mpegvideo_ctx->level == 9 && stream->mpegvideo_ctx->profile <= AVC_MAIN ) // level 1b
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bs_write1( &q, 1 ); // constraint_set3_flag
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else if( stream->mpegvideo_ctx->profile == H264_HIGH_10_INTRA ||
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stream->mpegvideo_ctx->profile == H264_CAVLC_444_INTRA ||
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stream->mpegvideo_ctx->profile == H264_HIGH_444_INTRA )
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else if( stream->mpegvideo_ctx->profile == AVC_HIGH_10_INTRA ||
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stream->mpegvideo_ctx->profile == AVC_CAVLC_444_INTRA ||
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stream->mpegvideo_ctx->profile == AVC_HIGH_444_INTRA )
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bs_write1( &q, 1 ); // constraint_set3_flag
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else
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bs_write1( &q, 0 ); // constraint_set3_flag
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@ -99,3 +300,5 @@ void write_dvb_au_information( bs_t *s, ts_int_pes_t *pes )
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bs_write( s, 8, bs_pos( &q ) >> 3 ); // data_field_length
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write_bytes( s, temp, bs_pos( &q ) >> 3 );
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}
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21
dvb/dvb.h
21
dvb/dvb.h
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@ -22,10 +22,12 @@
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#define LIBMPEGTS_DVB_H
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/* Descriptor Tags */
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#define DVB_SERVICE_DESCRIPTOR_TAG 0x48
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#define DVB_SERVICE_DESCRIPTOR_TAG 0x48
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#define DVB_STREAM_IDENTIFIER_DESCRIPTOR_TAG 0x52
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#define DVB_TELETEXT_DESCRIPTOR_TAG 0x56
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#define DVB_TELETEXT_DESCRIPTOR_TAG 0x56
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#define DVB_SUBTITLING_DESCRIPTOR_TAG 0x59
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#define DVB_AC3_DESCRIPTOR_TAG 0x6a
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#define DVB_ADAPTATION_FIELD_DATA_DESCRIPTOR 0x70
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#define DVB_EAC3_DESCRIPTOR_TAG 0x7a
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#define DVB_AAC_DESCRIPTOR_TAG 0x7c
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@ -42,15 +44,24 @@
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/* Default Retransmit times (ms) */
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#define EIT_MAX_RETRANS_TIME 2000
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#define EIT_OTHER_TS_MAX_RETRANS_TIME 10000
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#define TDT_MAX_RETRANS_TIME 25000
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#define TOT_MAX_RETRANS_TIME 25000
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#define TDT_MAX_RETRANS_TIME 25000
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#define TOT_MAX_RETRANS_TIME 25000
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/* Private Data Bytes data_field_tags */
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#define ANNOUNCEMENT_SWITCHING_DATA_FIELD 0x01
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#define AU_INFORMATION_DATA_FIELD 0x02
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#define PVR_ASSIST_INFORMATION_DATA_FIELD 0x03
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void write_aac_descriptor( bs_t *s, ts_int_stream_t *stream );
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void write_adaptation_field_data_descriptor( bs_t *s, uint8_t identifier );
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void write_stream_identifier_descriptor( bs_t *s, uint8_t stream_identifier );
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void write_dvb_au_information( ts_writer_t *w, bs_t *s, ts_int_stream_t *stream, ts_int_frame_t *frame );
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void write_teletext_descriptor( bs_t *s );
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void write_nit( ts_writer_t *w );
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//void write_sdt( ts_writer_t *w );
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//void write_eit( ts_writer_t *w );
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//void write_tdt( ts_writer_t *w );
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void write_dvb_au_information( bs_t *s, ts_int_pes_t *pes );
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#endif
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