# include <dvbpsi/tot.h>
#include "../mux/mpeg/dvbpsi_compat.h"
+#include "../mux/mpeg/streams.h"
+#include "../mux/mpeg/tsutil.h"
+#include "../mux/mpeg/tables.h"
#include "../codec/opus_header.h"
ts_es_t **extra_es;
int i_extra_es;
+ struct
+ {
+ vlc_fourcc_t i_fourcc;
+ int i_type;
+ bool b_haspcr;
+ } probed;
} ts_pid_t;
typedef struct
int i_service;
} vdr_info_t;
+#define MIN_ES_PID 32
+#define MAX_ES_PID 8190
+
struct demux_sys_t
{
stream_t *stream;
mtime_t i_first_dts;
} pcrfix;
+ struct
+ {
+ mtime_t i_first_dts; /* first dts encountered for the stream */
+ int i_timesourcepid; /* which pid we saved the dts from */
+ bool b_pat_deadline; /* set if we haven't seen PAT within 140ms */
+ } patfix;
+
vdr_info_t vdr;
/* */
(mtime_t)(p_data[4] >> 1);
}
+static void ProbePES( demux_t *p_demux, ts_pid_t *pid, const uint8_t *p_pesstart, bool b_adaptfield )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ const uint8_t *p_pes = p_pesstart;
+ pid->probed.i_type = -1;
+
+ if( b_adaptfield )
+ {
+ uint8_t len = *p_pes;
+ p_pes++;
+
+ if(len == 0)
+ {
+ p_pes++; /* stuffing */
+ }
+ else
+ {
+ pid->probed.b_haspcr = ( *p_pes >= 7 && (p_pes[1] & 0x10) );
+ p_pes += len;
+ }
+ }
+
+ if( p_pes - p_pesstart >= TS_PACKET_SIZE_188 - 9)
+ return;
+
+ if( p_pes[0] != 0 || p_pes[1] != 0 || p_pes[2] != 1 )
+ return;
+
+ size_t i_pesextoffset = 8;
+ mtime_t i_dts = -1;
+ if( p_pes[7] & 0x80 ) // PTS
+ {
+ i_pesextoffset += 5;
+ i_dts = ExtractPESTimestamp( &p_pes[9] );
+ }
+ if( p_pes[7] & 0x40 ) // DTS
+ {
+ i_pesextoffset += 5;
+ i_dts = ExtractPESTimestamp( &p_pes[14] );
+ }
+ if( p_pes[7] & 0x20 ) // ESCR
+ i_pesextoffset += 6;
+ if( p_pes[7] & 0x10 ) // ESrate
+ i_pesextoffset += 3;
+ if( p_pes[7] & 0x08 ) // DSM
+ i_pesextoffset += 1;
+ if( p_pes[7] & 0x04 ) // CopyInfo
+ i_pesextoffset += 1;
+ if( p_pes[7] & 0x02 ) // PESCRC
+ i_pesextoffset += 2;
+
+ /* HeaderdataLength */
+ const size_t i_payloadoffset = 8 + 1 + p_pes[8];
+ i_pesextoffset += 1;
+
+ if( p_pes[7] & 0x01 ) // PESExt
+ {
+ size_t i_extension2_offset = 1;
+ if ( p_pes[i_pesextoffset] & 0x80 ) // private data
+ i_extension2_offset += 16;
+ if ( p_pes[i_pesextoffset] & 0x40 ) // pack
+ i_extension2_offset += 1;
+ if ( p_pes[i_pesextoffset] & 0x20 ) // seq
+ i_extension2_offset += 2;
+ if ( p_pes[i_pesextoffset] & 0x10 ) // P-STD
+ i_extension2_offset += 2;
+ if ( p_pes[i_pesextoffset] & 0x01 ) // Extension 2
+ {
+ uint8_t i_len = p_pes[i_pesextoffset + i_extension2_offset] & 0x7F;
+ i_extension2_offset += i_len;
+ }
+ }
+ /* (i_payloadoffset - i_pesextoffset) 0xFF stuffing */
+
+ if( &p_pes[i_payloadoffset] - p_pesstart >= TS_PACKET_SIZE_188 - 4)
+ return;
+
+ const uint8_t *p_data = &p_pes[i_payloadoffset];
+ /* AUDIO STREAM */
+ if(p_pes[3] >= 0xC0 && p_pes[3] <= 0xDF)
+ {
+ if( !memcmp( p_data, "\x7F\xFE\x80\x01", 4 ) )
+ {
+ pid->probed.i_type = 0x06;
+ pid->probed.i_fourcc = VLC_CODEC_DTS;
+ }
+ else if( !memcmp( p_data, "\x0B\x77", 2 ) )
+ {
+ pid->probed.i_type = 0x06;
+ pid->probed.i_fourcc = VLC_CODEC_EAC3;
+ }
+ else if( p_data[0] == 0xFF && (p_data[1] & 0xE0) == 0xE0 )
+ {
+ switch(p_data[1] & 18)
+ {
+ /* 10 - MPEG Version 2 (ISO/IEC 13818-3)
+ 11 - MPEG Version 1 (ISO/IEC 11172-3) */
+ case 0x10:
+ pid->probed.i_type = 0x04;
+ break;
+ case 0x18:
+ pid->probed.i_type = 0x03;
+ default:
+ break;
+ }
+
+ switch(p_data[1] & 6)
+ {
+ /* 01 - Layer III
+ 10 - Layer II
+ 11 - Layer I */
+ case 0x06:
+ pid->probed.i_type = 0x04;
+ pid->probed.i_fourcc = VLC_CODEC_MPGA;
+ break;
+ case 0x04:
+ pid->probed.i_type = 0x04;
+ pid->probed.i_fourcc = VLC_CODEC_MP2;
+ break;
+ case 0x02:
+ pid->probed.i_type = 0x04;
+ pid->probed.i_fourcc = VLC_CODEC_MP3;
+ default:
+ break;
+ }
+ }
+ }
+ /* VIDEO STREAM */
+ else if( p_pes[3] >= 0xE0 && p_pes[3] <= 0xEF )
+ {
+ if( !memcmp( p_data, "\x00\x00\x00", 4 ) )
+ {
+ pid->probed.i_type = 0x1b;
+ pid->probed.i_fourcc = VLC_CODEC_H264;
+ }
+ else if( !memcmp( p_data, "\x00\x00\x01", 4 ) )
+ {
+ pid->probed.i_type = 0x02;
+ pid->probed.i_fourcc = VLC_CODEC_MPGV;
+ }
+ }
+
+ /* Track timestamps and flag missing PAT */
+ if( !p_sys->patfix.i_timesourcepid && i_dts > -1 )
+ {
+ p_sys->patfix.i_first_dts = i_dts;
+ p_sys->patfix.i_timesourcepid = pid->i_pid;
+ }
+ else if( p_sys->patfix.i_timesourcepid == pid->i_pid && i_dts > -1 &&
+ !p_sys->patfix.b_pat_deadline )
+ {
+ if( i_dts - p_sys->patfix.i_first_dts > 9 * 140000 / 100 )
+ p_sys->patfix.b_pat_deadline = true;
+ }
+
+}
+
+static void BuildPATCallback( void *p_opaque, block_t *p_block )
+{
+ ts_pid_t *pat_pid = (ts_pid_t *) p_opaque;
+ dvbpsi_PushPacket( pat_pid->psi->handle, p_block->p_buffer );
+}
+
+static void BuildPMTCallback( void *p_opaque, block_t *p_block )
+{
+ ts_pid_t *program_pid = (ts_pid_t *) p_opaque;
+ while( p_block )
+ {
+ for( int i_prg = 0; i_prg < program_pid->psi->i_prg; i_prg++ )
+ {
+ dvbpsi_PushPacket( program_pid->psi->prg[i_prg]->handle,
+ p_block->p_buffer );
+ }
+ p_block = p_block->p_next;
+ }
+}
+
+static void MissingPATPMTFixup( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+ int i_program_number = 1234;
+ int i_program_pid = 1337;
+ int i_pcr_pid = 0x1FFF;
+ int i_num_pes = 0;
+
+ if( p_sys->pid[i_program_pid].b_seen )
+ {
+ /* Find a free one */
+ for( i_program_pid = MIN_ES_PID;
+ i_program_pid < MAX_ES_PID && p_sys->pid[i_program_pid].b_seen;
+ i_program_pid++ );
+ }
+
+ for( int i = MIN_ES_PID; i < MAX_ES_PID; i++ )
+ {
+ if( !p_sys->pid[i].b_seen ||
+ !p_sys->pid[i].probed.i_type )
+ continue;
+
+ if( i_pcr_pid == 0x1FFF && ( p_sys->pid[i].probed.i_type == 0x03 ||
+ p_sys->pid[i].probed.b_haspcr ) )
+ i_pcr_pid = p_sys->pid[i].i_pid;
+
+ i_num_pes++;
+ }
+
+ if( i_num_pes == 0 )
+ return;
+
+ ts_stream_t patstream =
+ {
+ .i_pid = 0,
+ .i_continuity_counter = 0x10,
+ .b_discontinuity = false
+ };
+
+ ts_stream_t pmtprogramstream =
+ {
+ .i_pid = i_program_pid,
+ .i_continuity_counter = 0x0,
+ .b_discontinuity = false
+ };
+
+ BuildPAT( DVBPSI_HANDLE_PARAM(p_sys->pid[0].psi->handle)
+ &p_sys->pid[0], BuildPATCallback,
+ 0, 1,
+ &patstream,
+ 1, &pmtprogramstream, &i_program_number );
+
+ if( !p_sys->pid[i_program_pid].psi )
+ {
+ msg_Err( p_demux, "PAT creation failed" );
+ return;
+ }
+
+ struct esstreams_t
+ {
+ pes_stream_t pes;
+ ts_stream_t ts;
+ };
+ es_format_t esfmt = {0};
+ struct esstreams_t *esstreams = calloc( i_num_pes, sizeof(struct esstreams_t) );
+ pes_mapped_stream_t *mapped = calloc( i_num_pes, sizeof(pes_mapped_stream_t) );
+ if( esstreams && mapped )
+ {
+ int j=0;
+ for( int i = MIN_ES_PID; i < MAX_ES_PID; i++ )
+ {
+ if( !p_sys->pid[i].b_seen ||
+ !p_sys->pid[i].probed.i_type )
+ continue;
+
+ esstreams[j].pes.i_stream_type = p_sys->pid[i].probed.i_type;
+ esstreams[j].pes.i_stream_type = p_sys->pid[i].probed.i_type;
+ esstreams[j].ts.i_pid = p_sys->pid[i].i_pid;
+ mapped[j].pes = &esstreams[j].pes;
+ mapped[j].ts = &esstreams[j].ts;
+ mapped[j].fmt = &esfmt;
+ j++;
+ }
+
+ BuildPMT( DVBPSI_HANDLE_PARAM(p_sys->pid[0].psi->handle) VLC_OBJECT(p_demux),
+ &p_sys->pid[i_program_pid], BuildPMTCallback,
+ 0, 1,
+ i_pcr_pid,
+ NULL,
+ 1, &pmtprogramstream, &i_program_number,
+ i_num_pes, mapped );
+ }
+ free(esstreams);
+ free(mapped);
+}
+
/*****************************************************************************
* Open
*****************************************************************************/
pid->i_pid = i;
pid->b_seen = false;
pid->b_valid = false;
+ pid->probed.i_fourcc = 0;
+ pid->probed.i_type = 0;
}
/* PID 8191 is padding */
p_sys->pid[8191].b_seen = true;
}
}
+ while( p_sys->i_pmt_es <= 0 && vlc_object_alive( p_demux )
+ && (!p_sys->pid[0].b_seen && !p_sys->patfix.b_pat_deadline) )
+ {
+ if( Demux( p_demux ) != 1 )
+ break;
+ }
+
+ /* If we had no PAT within 140ms, create PAT/PMT from probed streams */
+ if( p_sys->i_pmt_es == 0 && !p_sys->pid[0].b_seen )
+ MissingPATPMTFixup( p_demux );
+
while( p_sys->i_pmt_es <= 0 && vlc_object_alive( p_demux ) )
{
if( Demux( p_demux ) != 1 )
/* Parse the TS packet */
ts_pid_t *p_pid = &p_sys->pid[PIDGet( p_pkt )];
+ /* Probe streams to build PAT/PMT after 140ms in case we don't see any PAT */
+ if( !p_sys->pid[0].b_seen &&
+ (p_pid->probed.i_type == 0 || p_pid->i_pid == p_sys->patfix.i_timesourcepid) &&
+ (p_pkt->p_buffer[1] & 0xC0) == 0x40 && /* Payload start but not corrupt */
+ (p_pkt->p_buffer[3] & 0xD0) == 0x10 ) /* Has payload but is not encrypted */
+ {
+ ProbePES( p_demux, p_pid, p_pkt->p_buffer + 4, p_pkt->p_buffer[3] & 0x20 /* Adaptation field */);
+ }
+
if( p_pid->b_valid )
{
if( p_pid->psi )
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