#define min(a, b) a < b ? a : b
-typedef enum { hb_stream_type_unknown = 0, hb_stream_type_transport, hb_stream_type_program } hb_stream_type_t;
-
-#define kMaxNumberDecodeStreams 8
-#define kMaxNumberVideoPIDS 16
-#define kMaxNumberAudioPIDS 32
-//#define kVideoStream 0
-//#define kAudioStream 1
-#define kNumDecodeBuffers 2
-
-#define CLOCKRATE ((int64_t)27000000) // MPEG System clock rate
-#define STREAMRATE ((int64_t)2401587) // Original HD stream rate 19.2 Mbps
-#define DEMUX (((int)STREAMRATE * 8) / 50)// Demux value for HD content STREAMRATE / 50
+typedef enum {
+ hb_stream_type_unknown = 0,
+ hb_stream_type_transport,
+ hb_stream_type_program
+} hb_stream_type_t;
+
+#define kMaxNumberVideoPIDS 1
+#define kMaxNumberAudioPIDS 15
+#define kMaxNumberDecodeStreams (kMaxNumberVideoPIDS+kMaxNumberAudioPIDS)
+#define kMaxNumberPMTStreams 32
+
struct hb_stream_s
{
- char * path;
- FILE * file_handle;
- hb_stream_type_t stream_type;
-
- int ps_current_write_buffer_index;
- int ps_current_read_buffer_index;
-
- struct {
- int size;
- int len;
- int read_pos;
- int write_pos;
- unsigned char * data;
- } ps_decode_buffer[kNumDecodeBuffers];
-
- struct {
- int lang_code;
- int flags;
- int rate;
- int bitrate;
- } a52_info[kMaxNumberAudioPIDS];
-
- int ts_video_pids[kMaxNumberVideoPIDS];
- int ts_audio_pids[kMaxNumberAudioPIDS];
-
- int ts_number_video_pids;
- int ts_number_audio_pids;
- int ts_selected_audio_pid_index;
-
- unsigned char* ts_packetbuf[kMaxNumberDecodeStreams];
- int ts_packetpos[kMaxNumberDecodeStreams];
-// int ts_bufpackets[kMaxNumberDecodeStreams];
- int ts_foundfirst[kMaxNumberDecodeStreams];
- int ts_skipbad[kMaxNumberDecodeStreams];
- int ts_streamcont[kMaxNumberDecodeStreams];
- int ts_streamid[kMaxNumberDecodeStreams];
- int ts_audio_stream_type[kMaxNumberAudioPIDS];
-
- FILE *debug_output;
+ int frames; /* video frames so far */
+ int errors; /* total errors so far */
+ int last_error_frame; /* frame # at last error message */
+ int last_error_count; /* # errors at last error message */
+
+ int64_t ts_lastpcr; /* the last pcr we found in the TS stream */
+ int64_t ts_nextpcr; /* the next pcr to put in a PS packet */
+
+ uint8_t *ts_buf[kMaxNumberDecodeStreams];
+ int ts_pos[kMaxNumberDecodeStreams];
+ int8_t ts_foundfirst[kMaxNumberDecodeStreams];
+ int8_t ts_skipbad[kMaxNumberDecodeStreams];
+ int8_t ts_streamcont[kMaxNumberDecodeStreams];
+ int8_t ts_start[kMaxNumberDecodeStreams];
+
+ uint8_t *fwrite_buf; /* PS buffer (set by hb_ts_stream_decode) */
+ uint8_t *fwrite_buf_orig; /* PS buffer start (set by hb_ts_stream_decode) */
+
+ /*
+ * Stuff before this point is dynamic state updated as we read the
+ * stream. Stuff after this point is stream description state that
+ * we learn during the initial scan but cache so it can be
+ * reused during the conversion read.
+ */
+ int16_t ts_video_pids[kMaxNumberVideoPIDS];
+ int16_t ts_audio_pids[kMaxNumberAudioPIDS];
+
+ uint8_t ts_number_video_pids;
+ uint8_t ts_number_audio_pids;
+
+ uint8_t ts_streamid[kMaxNumberDecodeStreams];
+ uint8_t ts_video_stream_type[kMaxNumberDecodeStreams];
+ uint8_t ts_audio_stream_type[kMaxNumberDecodeStreams];
+
+ char *path;
+ FILE *file_handle;
+ hb_stream_type_t stream_type;
+ int opentype;
+
+ struct {
+ int lang_code;
+ int flags;
+ int rate;
+ int bitrate;
+ } a52_info[kMaxNumberAudioPIDS];
+
+ struct
+ {
+ unsigned short program_number;
+ unsigned short program_map_PID;
+ } pat_info[kMaxNumberPMTStreams];
+ int ts_number_pat_entries;
+
+ struct
+ {
+ int reading;
+ unsigned char *tablebuf;
+ unsigned int tablepos;
+ unsigned char current_continuity_counter;
+
+ int section_length;
+ int program_number;
+ unsigned int PCR_PID;
+ int program_info_length;
+ unsigned char *progam_info_descriptor_data;
+ struct
+ {
+ unsigned char stream_type;
+ unsigned short elementary_PID;
+ unsigned short ES_info_length;
+ unsigned char *es_info_descriptor_data;
+ } pmt_stream_info[kMaxNumberPMTStreams];
+ } pmt_info;
};
/***********************************************************************
static void hb_stream_duration(hb_stream_t *stream, hb_title_t *inTitle);
static void hb_ts_stream_init(hb_stream_t *stream);
static void hb_ts_stream_find_pids(hb_stream_t *stream);
-static void hb_ts_stream_decode(hb_stream_t *stream);
+static int hb_ts_stream_decode(hb_stream_t *stream, uint8_t *obuf);
static void hb_ts_stream_reset(hb_stream_t *stream);
-static void hb_stream_put_back(hb_stream_t *stream, int i);
-static void hb_stream_set_audio_id_and_codec(hb_stream_t *stream, hb_audio_t *audio);
+static hb_audio_t *hb_ts_stream_set_audio_id_and_codec(hb_stream_t *stream,
+ int aud_pid_index);
+static void hb_ps_stream_find_audio_ids(hb_stream_t *stream, hb_title_t *title);
+static off_t align_to_next_packet(FILE* f);
+
+/*
+ * streams have a bunch of state that's learned during the scan. We don't
+ * want to throw away the state when scan does a close then relearn
+ * everything when reader does an open. So we save the stream state on
+ * the close following a scan and reuse it when 'reader' does an open.
+ */
+static hb_list_t *stream_state_list;
+
+static hb_stream_t *hb_stream_lookup( const char *path )
+{
+ if ( stream_state_list == NULL )
+ return NULL;
+
+ hb_stream_t *ss;
+ int i = 0;
-int hb_stream_is_stream_type( char * path )
+ while ( ( ss = hb_list_item( stream_state_list, i++ ) ) != NULL )
+ {
+ if ( strcmp( path, ss->path ) == 0 )
+ {
+ break;
+ }
+ }
+ return ss;
+}
+
+static void hb_stream_state_delete( hb_stream_t *ss )
{
- if ((strstr(path,".mpg") != NULL) ||
- (strstr(path,".vob") != NULL) ||
- (strstr(path, ".VOB") != NULL) ||
- (strstr(path, ".mpeg") != NULL) ||
- (strstr(path,".ts") != NULL) ||
- (strstr(path, ".m2t") != NULL) ||
- (strstr(path, ".TS") != NULL))
- {
- return 1;
- }
- else
+ hb_list_rem( stream_state_list, ss );
+ free( ss->path );
+ free( ss );
+}
+
+static inline int check_ps_sync(const uint8_t *buf)
+{
+ // a legal MPEG program stream must start with a Pack header in the
+ // first four bytes.
+ return (buf[0] == 0x00) && (buf[1] == 0x00) &&
+ (buf[2] == 0x01) && (buf[3] == 0xba);
+}
+
+static inline int check_ts_sync(const uint8_t *buf)
+{
+ // must have initial sync byte, no scrambling & a legal adaptation ctrl
+ return (buf[0] == 0x47) && ((buf[3] >> 6) == 0) && ((buf[3] >> 4) > 0);
+}
+
+static inline int have_ts_sync(const uint8_t *buf)
+{
+ return check_ts_sync(&buf[0*188]) && check_ts_sync(&buf[1*188]) &&
+ check_ts_sync(&buf[2*188]) && check_ts_sync(&buf[3*188]) &&
+ check_ts_sync(&buf[4*188]) && check_ts_sync(&buf[5*188]) &&
+ check_ts_sync(&buf[6*188]) && check_ts_sync(&buf[7*188]);
+}
+
+static int hb_stream_check_for_ts(const uint8_t *buf)
+{
+ // transport streams should have a sync byte every 188 bytes.
+ // search the first KB of buf looking for at least 8 consecutive
+ // correctly located sync patterns.
+ int offset = 0;
+
+ for ( offset = 0; offset < 1024; ++offset )
+ {
+ if ( have_ts_sync( &buf[offset]) )
+ return 1;
+ }
return 0;
}
+static int hb_stream_check_for_ps(const uint8_t *buf)
+{
+ // program streams should have a Pack header every 2048 bytes.
+ // check that we have 4 of these.
+ return check_ps_sync(&buf[0*2048]) && check_ps_sync(&buf[1*2048]) &&
+ check_ps_sync(&buf[2*2048]) && check_ps_sync(&buf[3*2048]);
+}
+
+static int hb_stream_get_type(hb_stream_t *stream)
+{
+ uint8_t buf[2048*4];
+
+ if ( fread(buf, 1, sizeof(buf), stream->file_handle) == sizeof(buf) )
+ {
+ if ( hb_stream_check_for_ts(buf) != 0 )
+ {
+ hb_log("file is MPEG Transport Stream");
+ stream->stream_type = hb_stream_type_transport;
+ hb_ts_stream_init(stream);
+ return 1;
+ }
+ if ( hb_stream_check_for_ps(buf) != 0 )
+ {
+ hb_log("file is MPEG Program Stream");
+ stream->stream_type = hb_stream_type_program;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static void hb_stream_delete_dynamic( hb_stream_t *d )
+{
+ if( d->file_handle )
+ {
+ fclose( d->file_handle );
+ d->file_handle = NULL;
+ }
+
+ int i=0;
+
+ for (i = 0; i < kMaxNumberDecodeStreams; i++)
+ {
+ if (d->ts_buf[i])
+ {
+ free(d->ts_buf[i]);
+ d->ts_buf[i] = NULL;
+ }
+ }
+}
+
+static void hb_stream_delete( hb_stream_t *d )
+{
+ hb_stream_delete_dynamic( d );
+ free( d->path );
+ free( d );
+}
+
/***********************************************************************
* hb_stream_open
***********************************************************************
*
**********************************************************************/
-hb_stream_t * hb_stream_open( char * path )
+hb_stream_t * hb_stream_open( char *path, int opentype )
{
- hb_stream_t * d;
- d = calloc( sizeof( hb_stream_t ), 1 );
+ FILE *f = fopen( path, "r" );
+ if ( f == NULL )
+ {
+ hb_log( "hb_stream_open: open %s failed", path );
+ return NULL;
+ }
- /* Open device */
- if( !( d->file_handle = fopen( path, "rb" ) ) )
+ hb_stream_t *d = calloc( sizeof( hb_stream_t ), 1 );
+ if ( d == NULL )
{
- hb_log( "hb_stream_open: fopen failed (%s)", path );
- goto fail;
+ fclose( f );
+ hb_log( "hb_stream_open: can't allocate space for %s stream state", path );
+ return NULL;
}
- d->path = strdup( path );
+ /*
+ * if we're opening the stream to read & convert, we need
+ * the state we saved when we scanned the stream. if we're
+ * opening the stream to scan it we want to rebuild the state
+ * (even if we have saved state, the stream may have changed).
+ */
+ hb_stream_t *ss = hb_stream_lookup( path );
+ if ( opentype == 1 )
+ {
+ /* opening to read - we must have saved state */
+ if ( ss == NULL )
+ {
+ hb_log( "hb_stream_open: error: re-opening %s but no scan state", path );
+ fclose( f );
+ free( d );
+ return NULL;
+ }
+ /*
+ * copy the saved state since we might be encoding the same stream
+ * multiple times.
+ */
+ memcpy( d, ss, sizeof(*d) );
+ d->file_handle = f;
+ d->opentype = opentype;
+ d->path = strdup( path );
+
+ if ( d->stream_type == hb_stream_type_transport )
+ {
+ int i = 0;
+ for ( ; i < d->ts_number_video_pids + d->ts_number_audio_pids; i++)
+ {
+ d->ts_buf[i] = malloc( HB_DVD_READ_BUFFER_SIZE );
+ }
+ hb_stream_seek( d, 0. );
+ }
+ return d;
+ }
- if ( ( strstr(d->path,".ts") != NULL) || ( strstr(d->path,".m2t") != NULL) || ( strstr(d->path,".TS") != NULL) )
- {
- d->stream_type = hb_stream_type_transport;
- hb_ts_stream_init(d);
- }
- else if (( strstr(d->path,".mpg") != NULL) || ( strstr(d->path,".vob") != NULL) || ( strstr(d->path,".mpeg") != NULL) || ( strstr(d->path,".VOB") != NULL))
- {
- d->stream_type = hb_stream_type_program;
- }
-
- return d;
+ /*
+ * opening for scan - delete any saved state then (re)scan the stream.
+ * If it's something we can deal with (MPEG2 PS or TS) return a stream
+ * reference structure & null otherwise.
+ */
-fail:
+ if ( ss != NULL )
+ {
+ hb_stream_state_delete( ss );
+ }
+ d->file_handle = f;
+ d->opentype = opentype;
+ d->path = strdup( path );
+ if (d->path != NULL && hb_stream_get_type( d ) != 0 )
+ {
+ return d;
+ }
+ fclose( d->file_handle );
+ if (d->path)
+ {
+ free( d->path );
+ }
+ hb_log( "hb_stream_open: open %s failed", path );
free( d );
return NULL;
}
**********************************************************************/
void hb_stream_close( hb_stream_t ** _d )
{
- hb_stream_t * d = *_d;
+ hb_stream_t *stream = * _d;
+ if ( stream->frames )
+ {
+ hb_log( "stream: %d good frames, %d errors (%.0f%%)", stream->frames,
+ stream->errors, (double)stream->errors * 100. /
+ (double)stream->frames );
+ }
+ /*
+ * if the stream was opened for a scan, cache the result, otherwise delete
+ * the state.
+ */
+ if ( stream->opentype == 0 )
+ {
+ hb_stream_delete_dynamic( stream );
+ if ( stream_state_list == NULL )
+ {
+ stream_state_list = hb_list_init();
+ }
+ hb_list_add( stream_state_list, stream );
+ }
+ else
+ {
+ hb_stream_delete( stream );
+ }
+ *_d = NULL;
+}
+
+/* when the file was first opened we made entries for all the audio elementary
+ * streams we found in it. Streams that were later found during the preview scan
+ * now have an audio codec, type, rate, etc., associated with them. At the end
+ * of the scan we delete all the audio entries that weren't found by the scan
+ * or don't have a format we support. This routine deletes audio entry 'indx'
+ * by copying all later entries down one slot. */
+static void hb_stream_delete_audio_entry(hb_stream_t *stream, int indx)
+{
+ int i;
- if( d->file_handle )
+ for (i = indx+1; i < stream->ts_number_audio_pids; ++i)
{
- fclose( d->file_handle );
- d->file_handle = NULL;
+ stream->ts_audio_pids[indx] = stream->ts_audio_pids[i];
+ stream->ts_audio_stream_type[1 + indx] = stream->ts_audio_stream_type[1+i];
+ stream->ts_streamid[1 + indx] = stream->ts_streamid[1 + i];
+ ++indx;
}
+ --stream->ts_number_audio_pids;
+}
- if (d->debug_output)
- {
- fclose(d->debug_output);
- d->debug_output = NULL;
- }
-
- int i=0;
- for (i = 0; i < kNumDecodeBuffers; i++)
- {
- if (d->ps_decode_buffer[i].data)
- {
- free(d->ps_decode_buffer[i].data);
- d->ps_decode_buffer[i].data = NULL;
- }
- }
-
- for (i = 0; i < kMaxNumberDecodeStreams; i++)
- {
- if (d->ts_packetbuf[i])
- {
- free(d->ts_packetbuf[i]);
- d->ts_packetbuf[i] = NULL;
- }
- }
-
- free( d );
- *_d = NULL;
+static int index_of_pid(int pid, hb_stream_t *stream)
+{
+ int i;
+
+ if ( pid == stream->ts_video_pids[0] )
+ return 0;
+
+ for ( i = 0; i < stream->ts_number_audio_pids; ++i )
+ if ( pid == stream->ts_audio_pids[i] )
+ return i + 1;
+
+ return -1;
}
/***********************************************************************
{
// 'Barebones Title'
hb_title_t *aTitle = hb_title_init( stream->path, 0 );
+ aTitle->index = 1;
// Copy part of the stream path to the title name
char *sep = strrchr(stream->path, '/');
char *dot_term = strrchr(aTitle->name, '.');
if (dot_term)
*dot_term = '\0';
-
+
// Height, width, rate and aspect ratio information is filled in when the previews are built
hb_stream_duration(stream, aTitle);
-
+
// One Chapter
hb_chapter_t * chapter;
chapter = calloc( sizeof( hb_chapter_t ), 1 );
chapter->minutes = aTitle->minutes;
chapter->seconds = aTitle->seconds;
hb_list_add( aTitle->list_chapter, chapter );
-
- int i=0, num_audio_tracks = 1;
-
+
+ // Figure out how many audio streams we really have:
+ // - For transport streams, for each PID listed in the PMT (whether
+ // or not it was an audio stream type) read the bitstream until we
+ // find an packet from that PID containing a PES header and see if
+ // the elementary stream is an audio type.
+ // - For program streams read the first 4MB and take every unique
+ // audio stream we find.
if (stream->stream_type == hb_stream_type_transport)
{
- num_audio_tracks = stream->ts_number_audio_pids;
- }
-
- for (i=0; i < num_audio_tracks ; i++)
- {
- // Basic AC-3 Audio track
- hb_audio_t * audio;
- audio = calloc( sizeof( hb_audio_t ), 1 );
-
- audio->source_pid = stream->ts_audio_pids[i];
-
- hb_stream_set_audio_id_and_codec(stream, audio);
-
- hb_list_add( aTitle->list_audio, audio );
+ int i;
+
+ for (i=0; i < stream->ts_number_audio_pids; i++)
+ {
+ hb_audio_t *audio = hb_ts_stream_set_audio_id_and_codec(stream, i);
+ if (audio->config.in.codec)
+ hb_list_add( aTitle->list_audio, audio );
+ else
+ {
+ free(audio);
+ hb_stream_delete_audio_entry(stream, i);
+ --i;
+ }
+ }
+
+ // add the PCR PID if we don't already have it
+ if ( index_of_pid( stream->pmt_info.PCR_PID, stream ) < 0 )
+ {
+ stream->ts_audio_pids[stream->ts_number_audio_pids++] =
+ stream->pmt_info.PCR_PID;
+ }
}
-
+ else
+ {
+ hb_ps_stream_find_audio_ids(stream, aTitle);
+ }
+
return aTitle;
}
+/*
+ * scan the next MB of 'stream' to find the next start packet for
+ * the Packetized Elementary Stream associated with TS PID 'pid'.
+ */
+static const uint8_t *hb_ts_stream_getPEStype(hb_stream_t *stream, uint32_t pid)
+{
+ static uint8_t buf[188];
+ int npack = 100000; // max packets to read
+
+ while (--npack >= 0)
+ {
+ if (fread(buf, 1, 188, stream->file_handle) != 188)
+ {
+ hb_log("hb_ts_stream_getPEStype: EOF while searching for PID 0x%x", pid);
+ return 0;
+ }
+ if (buf[0] != 0x47)
+ {
+ hb_log("hb_ts_stream_getPEStype: lost sync while searching for PID 0x%x", pid);
+ align_to_next_packet(stream->file_handle);
+ continue;
+ }
+
+ /*
+ * The PES header is only in TS packets with 'start' set so we check
+ * that first then check for the right PID.
+ */
+ if ((buf[1] & 0x40) == 0 || (buf[1] & 0x1f) != (pid >> 8) ||
+ buf[2] != (pid & 0xff))
+ {
+ // not a start packet or not the pid we want
+ continue;
+ }
+
+ /* skip over the TS hdr to return a pointer to the PES hdr */
+ int udata = 4;
+ switch (buf[3] & 0x30)
+ {
+ case 0x00: // illegal
+ case 0x20: // fill packet
+ continue;
+
+ case 0x30: // adaptation
+ if (buf[4] > 182)
+ {
+ hb_log("hb_ts_stream_getPEStype: invalid adaptation field length %d for PID 0x%x", buf[4], pid);
+ continue;
+ }
+ udata += buf[4] + 1;
+ break;
+ }
+ return &buf[udata];
+ }
+
+ /* didn't find it */
+ return 0;
+}
+
+static uint64_t hb_ps_stream_getVideoPTS(hb_stream_t *stream)
+{
+ hb_buffer_t *buf = hb_buffer_init(HB_DVD_READ_BUFFER_SIZE);
+ hb_list_t *list = hb_list_init();
+ // how many blocks we read while searching for a video PES header
+ int blksleft = 1024;
+ uint64_t pts = 0;
+
+ while (--blksleft >= 0 && hb_stream_read(stream, buf) == 1)
+ {
+ hb_buffer_t *es;
+
+ // 'buf' contains an MPEG2 PACK - get a list of all it's elementary streams
+ hb_demux_ps(buf, list);
+
+ while ( ( es = hb_list_item( list, 0 ) ) )
+ {
+ hb_list_rem( list, es );
+ if ( es->id == 0xe0 )
+ {
+ // this PES contains video - if there's a PTS we're done
+ // hb_demux_ps left the PTS in buf_es->start.
+ if ( es->start != ~0 )
+ {
+ pts = es->start;
+ blksleft = 0;
+ break;
+ }
+ }
+ hb_buffer_close( &es );
+ }
+ }
+ hb_list_empty( &list );
+ hb_buffer_close(&buf);
+ return pts;
+}
+
/***********************************************************************
* hb_stream_duration
***********************************************************************
*
+ * Finding stream duration is difficult. One issue is that the video file
+ * may have chunks from several different program fragments (main feature,
+ * commercials, station id, trailers, etc.) all with their own base pts
+ * value. We can't find the piece boundaries without reading the entire
+ * file but if we compute a rate based on time stamps from two different
+ * pieces the result will be meaningless. The second issue is that the
+ * data rate of compressed video normally varies by 5-10x over the length
+ * of the video. This says that we want to compute the rate over relatively
+ * long segments to get a representative average but long segments increase
+ * the likelihood that we'll cross a piece boundary.
+ *
+ * What we do is take time stamp samples at several places in the file
+ * (currently 16) then compute the average rate (i.e., ticks of video per
+ * byte of the file) for all pairs of samples (N^2 rates computed for N
+ * samples). Some of those rates will be absurd because the samples came
+ * from different segments. Some will be way low or high because the
+ * samples came from a low or high motion part of the segment. But given
+ * that we're comparing *all* pairs the majority of the computed rates
+ * should be near the overall average. So we median filter the computed
+ * rates to pick the most representative value.
+ *
**********************************************************************/
-void hb_stream_duration(hb_stream_t *stream, hb_title_t *inTitle)
+struct pts_pos {
+ uint64_t pos; /* file position of this PTS sample */
+ uint64_t pts; /* PTS from video stream */
+};
+
+#define NDURSAMPLES 16
+
+// get one (position, timestamp) sampple from a transport or program
+// stream.
+static struct pts_pos hb_sample_pts(hb_stream_t *stream, uint64_t fpos)
{
- // VOB Files often have exceedingly unusual PTS values in them - they will progress for a while
- // and then reset without warning !
- if (strstr(stream->path,".vob") != NULL)
- {
- // So we'll use a 'fake duration' that should give enough time !
- int64_t duration = 4 * 3600 * 90000;
- inTitle->duration = duration; //90LL * dvdtime2msec( &d->pgc->playback_time );
- inTitle->hours = inTitle->duration / 90000 / 3600;
- inTitle->minutes = ( ( inTitle->duration / 90000 ) % 3600 ) / 60;
- inTitle->seconds = ( inTitle->duration / 90000 ) % 60;
- return;
- }
+ struct pts_pos pp = { 0, 0 };
- unsigned char *buf = (unsigned char *) malloc(4096);
- int done = 0;
- off_t cur_pos;
- int64_t first_pts = 0, last_pts = 0;
-
- // To calculate the duration we look for the first and last presentation time stamps in the stream for video data
- // and then use the delta
- while (!done)
+ if ( stream->stream_type == hb_stream_type_program )
+ {
+ // round address down to nearest dvd sector start
+ fpos &=~ ( HB_DVD_READ_BUFFER_SIZE - 1 );
+ fseeko( stream->file_handle, fpos, SEEK_SET );
+ pp.pts = hb_ps_stream_getVideoPTS( stream );
+ }
+ else
{
- cur_pos = ftello(stream->file_handle);
- if (fread(buf, 4096, 1, stream->file_handle) == 1)
- {
- int i=0;
- for (i=0; (i <= 4092) && !done; i++)
+ const uint8_t *buf;
+ fseeko( stream->file_handle, fpos, SEEK_SET );
+ align_to_next_packet( stream->file_handle );
+ buf = hb_ts_stream_getPEStype( stream, stream->ts_video_pids[0] );
+ if ( buf == NULL )
{
- if ((buf[i] == 0x00) && (buf[i+1] == 0x00) && (buf[i+2] == 0x01) && (buf[i+3] == 0xe0)) // Found a Video Stream
- {
- // Now look for a PTS field - we need to make sure we have enough space so we back up a little and read
- // some more data
- fseeko(stream->file_handle, cur_pos + i, SEEK_SET);
- if (fread(buf, 4096, 1, stream->file_handle) == 1)
- {
- int has_pts = ( ( buf[7] >> 6 ) & 0x2 ) ? 1 : 0;
- if (has_pts)
- {
- first_pts = ( ( ( (uint64_t) buf[9] >> 1 ) & 0x7 ) << 30 ) +
- ( buf[10] << 22 ) +
- ( ( buf[11] >> 1 ) << 15 ) +
- ( buf[12] << 7 ) +
- ( buf[13] >> 1 );
- done = 1;
- }
- else
- {
- fseeko(stream->file_handle, cur_pos, SEEK_SET);
- fread(buf, 4096, 1, stream->file_handle);
- }
- }
- }
+ hb_log("hb_sample_pts: couldn't find video packet near %llu", fpos);
+ return pp;
+ }
+ if ( ( buf[7] >> 7 ) != 1 )
+ {
+ hb_log("hb_sample_pts: no PTS in video packet near %llu", fpos);
+ return pp;
}
- }
- else
- done = 1; // End of data;
+ pp.pts = ( ( (uint64_t)buf[9] >> 1 ) & 7 << 30 ) |
+ ( (uint64_t)buf[10] << 22 ) |
+ ( ( (uint64_t)buf[11] >> 1 ) << 15 ) |
+ ( (uint64_t)buf[12] << 7 ) |
+ ( (uint64_t)buf[13] >> 1 );
}
+ pp.pos = ftello(stream->file_handle);
+ hb_log("hb_sample_pts: pts %lld at %llu", pp.pts, pp.pos );
+ return pp;
+}
- // Now work back from the end of the stream
- fseeko(stream->file_handle,0 ,SEEK_END);
-
- done = 0;
- while (!done)
+static int dur_compare( const void *a, const void *b )
+{
+ const double *aval = a, *bval = b;
+ return ( *aval < *bval ? -1 : ( *aval == *bval ? 0 : 1 ) );
+}
+
+// given an array of (position, time) samples, compute a max-likelihood
+// estimate of the average rate by computing the rate between all pairs
+// of samples then taking the median of those rates.
+static double compute_stream_rate( struct pts_pos *pp, int n )
+{
+ int i, j;
+ double rates[NDURSAMPLES * NDURSAMPLES / 2];
+ double *rp = rates;
+
+ // the following nested loops compute the rates between all pairs.
+ *rp = 0;
+ for ( i = 0; i < n-1; ++i )
{
- // Back up a little
- if (fseeko(stream->file_handle, -4096, SEEK_CUR) < 0)
- {
- done = 1;
- break;
- }
-
- cur_pos = ftello(stream->file_handle);
- if (fread(buf, 4096, 1, stream->file_handle) == 1)
- {
- int i=0;
- for (i=4092; (i >= 0) && !done; i--)
+ // Bias the median filter by not including pairs that are "far"
+ // from one another. This is to handle cases where the file is
+ // made of roughly equal size pieces where a symmetric choice of
+ // pairs results in having the same number of intra-piece &
+ // inter-piece rate estimates. This would mean that the median
+ // could easily fall in the inter-piece part of the data which
+ // would give a bogus estimate. The 'ns' index creates an
+ // asymmetry that favors locality.
+ int ns = i + ( n >> 1 );
+ if ( ns > n )
+ ns = n;
+ for ( j = i+1; j < ns; ++j )
{
- if ((buf[i] == 0x00) && (buf[i+1] == 0x00) && (buf[i+2] == 0x01) && (buf[i+3] == 0xe0)) // Found a Video Stream
- {
- // Now look for a PTS field - we need to make sure we have enough space so we back up a little and read
- // some more data
- fseeko(stream->file_handle, cur_pos + i, SEEK_SET);
- fread(buf, 1, 4096, stream->file_handle);
-
- unsigned char pts_dts_flag = buf[7];
-
- int has_pts = ( ( buf[7] >> 6 ) & 0x2 ) ? 1 : 0;
- if (has_pts)
- {
- last_pts = ( ( ( (uint64_t) buf[9] >> 1 ) & 0x7 ) << 30 ) +
- ( buf[10] << 22 ) +
- ( ( buf[11] >> 1 ) << 15 ) +
- ( buf[12] << 7 ) +
- ( buf[13] >> 1 );
-
- done = 1;
- }
- else
- {
- // Re Read the original data and carry on (i is still valid in the old buffer)
- fseeko(stream->file_handle, cur_pos, SEEK_SET);
- fread(buf, 4096, 1, stream->file_handle);
- }
- }
+ if ( pp[j].pts != pp[i].pts && pp[j].pos > pp[i].pos )
+ {
+ *rp = ((double)( pp[j].pts - pp[i].pts )) /
+ ((double)( pp[j].pos - pp[i].pos ));
+ ++rp;
+ }
}
- fseeko(stream->file_handle, -4096, SEEK_CUR); // 'Undo' the last read
- }
- else
- done = 1; // End of data;
}
- free(buf);
-
- int64_t duration = last_pts - first_pts;
- inTitle->duration = duration; //90LL * dvdtime2msec( &d->pgc->playback_time );
- inTitle->hours = inTitle->duration / 90000 / 3600;
- inTitle->minutes = ( ( inTitle->duration / 90000 ) % 3600 ) / 60;
- inTitle->seconds = ( inTitle->duration / 90000 ) % 60;
-
+ // now compute and return the median of all the (n*n/2) rates we computed
+ // above.
+ int nrates = rp - rates;
+ qsort( rates, nrates, sizeof (rates[0] ), dur_compare );
+ return rates[nrates >> 1];
+}
+
+static void hb_stream_duration(hb_stream_t *stream, hb_title_t *inTitle)
+{
+ struct pts_pos ptspos[NDURSAMPLES];
+ struct pts_pos *pp = ptspos;
+ int i;
+
+ fseeko(stream->file_handle, 0, SEEK_END);
+ uint64_t fsize = ftello(stream->file_handle);
+ uint64_t fincr = fsize / NDURSAMPLES;
+ uint64_t fpos = fincr / 2;
+ for ( i = NDURSAMPLES; --i >= 0; fpos += fincr )
+ {
+ *pp++ = hb_sample_pts(stream, fpos);
+ }
+ uint64_t dur = compute_stream_rate( ptspos, pp - ptspos ) * (double)fsize;
+ inTitle->duration = dur;
+ dur /= 90000;
+ inTitle->hours = dur / 3600;
+ inTitle->minutes = ( dur % 3600 ) / 60;
+ inTitle->seconds = dur % 60;
+
+ rewind(stream->file_handle);
}
/***********************************************************************
**********************************************************************/
int hb_stream_read( hb_stream_t * src_stream, hb_buffer_t * b )
{
- if (src_stream->stream_type == hb_stream_type_program)
- {
- size_t amt_read;
- amt_read = fread(b->data, HB_DVD_READ_BUFFER_SIZE, 1, src_stream->file_handle);
- if (amt_read > 0)
- return 1;
- else
- return 0;
- }
- else if (src_stream->stream_type == hb_stream_type_transport)
- {
- int read_buffer_index = src_stream->ps_current_read_buffer_index;
-
- // Transport streams are a little more complex - we might be able to just
- // read from the transport stream conversion buffer (if there's enough data)
- // or we may need to transfer what's left and fill it again.
- if (src_stream->ps_decode_buffer[read_buffer_index].len - src_stream->ps_decode_buffer[read_buffer_index].read_pos > HB_DVD_READ_BUFFER_SIZE)
- {
- memcpy(b->data, src_stream->ps_decode_buffer[read_buffer_index].data + src_stream->ps_decode_buffer[read_buffer_index].read_pos,HB_DVD_READ_BUFFER_SIZE);
- src_stream->ps_decode_buffer[read_buffer_index].read_pos += HB_DVD_READ_BUFFER_SIZE;
- return 1;
- }
- else
- {
- // Not quite enough data in the buffer - transfer what is present, fill the buffer and then
- // transfer what's still needed.
- int transfer_size = HB_DVD_READ_BUFFER_SIZE;
- int amt_avail_to_transfer = src_stream->ps_decode_buffer[read_buffer_index].len - src_stream->ps_decode_buffer[read_buffer_index].read_pos;
- memcpy(b->data, src_stream->ps_decode_buffer[read_buffer_index].data + src_stream->ps_decode_buffer[read_buffer_index].read_pos, amt_avail_to_transfer);
- transfer_size -= amt_avail_to_transfer;
- src_stream->ps_decode_buffer[read_buffer_index].read_pos += amt_avail_to_transfer;
-
- // Give up this buffer - decoding may well need it, and we're done
- src_stream->ps_decode_buffer[read_buffer_index].write_pos = 0;
- src_stream->ps_decode_buffer[read_buffer_index].len = 0;
-
- // Fill the buffer
- hb_ts_stream_decode(src_stream);
-
- // Decoding will almost certainly have changed the current read buffer index
- read_buffer_index = src_stream->ps_current_read_buffer_index;
-
- if (src_stream->ps_decode_buffer[read_buffer_index].len == 0)
- {
- hb_log("hb_stream_read - buffer after decode has zero length data");
- return 0;
- }
-
- // Read the bit we still need
- memcpy(b->data+amt_avail_to_transfer, src_stream->ps_decode_buffer[read_buffer_index].data + src_stream->ps_decode_buffer[read_buffer_index].read_pos,transfer_size);
- src_stream->ps_decode_buffer[read_buffer_index].read_pos += transfer_size;
-
- return 1;
- }
- }
- else
- return 0;
+ if ( src_stream->stream_type == hb_stream_type_program )
+ {
+ size_t amt_read = fread(b->data, HB_DVD_READ_BUFFER_SIZE, 1,
+ src_stream->file_handle);
+ return (amt_read > 0);
+ }
+ return hb_ts_stream_decode( src_stream, b->data );
}
/***********************************************************************
fseeko(src_stream->file_handle,0 ,SEEK_END);
stream_size = ftello(src_stream->file_handle);
new_pos = (off_t) ((double) (stream_size) * pos_ratio);
+ new_pos &=~ (HB_DVD_READ_BUFFER_SIZE - 1);
int r = fseeko(src_stream->file_handle, new_pos, SEEK_SET);
-
+
if (r == -1)
{
fseeko(src_stream->file_handle, cur_pos, SEEK_SET);
return 0;
}
-
+
if (src_stream->stream_type == hb_stream_type_transport)
{
// We need to drop the current decoder output and move
// forwards to the next transport stream packet.
hb_ts_stream_reset(src_stream);
}
-
- // Now we must scan forwards for a valid start code (0x000001BA)
- int done = 0;
- hb_buffer_t *buf = hb_buffer_init(HB_DVD_READ_BUFFER_SIZE);
- while (!done)
- {
- if (hb_stream_read(src_stream,buf) == 1)
+
+ return 1;
+}
+
+static void set_audio_description( hb_audio_t *audio, iso639_lang_t *lang )
+{
+ /* XXX
+ * This is a duplicate of code in dvd.c - it should get factored out
+ * into a common routine. We probably should only be putting the lang
+ * code or a lang pointer into the audio config & let the common description
+ * formatting routine in scan.c do all the stuff below.
+ */
+ snprintf( audio->config.lang.description,
+ sizeof( audio->config.lang.description ), "%s (%s)",
+ strlen(lang->native_name) ? lang->native_name : lang->eng_name,
+ audio->config.in.codec == HB_ACODEC_AC3 ? "AC3" :
+ audio->config.in.codec == HB_ACODEC_DCA ? "DTS" :
+ audio->config.in.codec == HB_ACODEC_MPGA ? "MPEG" : "LPCM" );
+ snprintf( audio->config.lang.simple, sizeof( audio->config.lang.simple ), "%s",
+ strlen(lang->native_name) ? lang->native_name : lang->eng_name );
+ snprintf( audio->config.lang.iso639_2, sizeof( audio->config.lang.iso639_2 ),
+ "%s", lang->iso639_2);
+}
+
+static hb_audio_t *hb_ts_stream_set_audio_id_and_codec(hb_stream_t *stream,
+ int aud_pid_index)
+{
+ off_t cur_pos = ftello(stream->file_handle);
+ hb_audio_t *audio = calloc( sizeof( hb_audio_t ), 1 );
+ const uint8_t *buf;
+
+ fseeko(stream->file_handle, 0, SEEK_SET);
+ align_to_next_packet(stream->file_handle);
+ buf = hb_ts_stream_getPEStype(stream, stream->ts_audio_pids[aud_pid_index]);
+
+ /* check that we found a PES header */
+ if (buf && buf[0] == 0x00 && buf[1] == 0x00 && buf[2] == 0x01)
{
- int i=0;
- for (i=0; (i <= HB_DVD_READ_BUFFER_SIZE-4) && (!done); i++)
- {
- if ((buf->data[i] == 0x00) && (buf->data[i+1] == 0x00) && (buf->data[i+2] == 0x01) && (buf->data[i+3] == 0xba))
+ if (buf[3] == 0xbd)
+ {
+ audio->id = 0x80bd | (aud_pid_index << 8);
+ audio->config.in.codec = HB_ACODEC_AC3;
+ hb_log("transport stream pid 0x%x (type 0x%x) is AC-3 audio id 0x%x",
+ stream->ts_audio_pids[aud_pid_index],
+ stream->ts_audio_stream_type[1 + aud_pid_index],
+ audio->id);
+ stream->ts_audio_stream_type[1 + aud_pid_index] = 0x81;
+ stream->ts_streamid[1 + aud_pid_index] = buf[3];
+ }
+ else if ((buf[3] & 0xe0) == 0xc0)
{
- done = 1;
- // 'Put Back' the data we've just read (up to this point)
- hb_stream_put_back(src_stream, i);
+ audio->id = buf[3] | aud_pid_index;
+ audio->config.in.codec = HB_ACODEC_MPGA;
+ hb_log("transport stream pid 0x%x (type 0x%x) is MPEG audio id 0x%x",
+ stream->ts_audio_pids[aud_pid_index],
+ stream->ts_audio_stream_type[1 + aud_pid_index],
+ audio->id);
+ stream->ts_audio_stream_type[1 + aud_pid_index] = 0x03;
+ stream->ts_streamid[1 + aud_pid_index] = buf[3];
}
- }
+ }
+ fseeko(stream->file_handle, cur_pos, SEEK_SET);
+ if ( audio->config.in.codec )
+ {
+ set_audio_description( audio,
+ lang_for_code( stream->a52_info[aud_pid_index].lang_code ) );
}
else
- done = 1; // End of data;
- }
- hb_buffer_close(&buf);
- return 1;
+ {
+ hb_log("transport stream pid 0x%x (type 0x%x) isn't audio",
+ stream->ts_audio_pids[aud_pid_index],
+ stream->ts_audio_stream_type[1 + aud_pid_index]);
+ }
+ return audio;
}
-/***********************************************************************
- * hb_stream_set_audio_id_and_codec
- ***********************************************************************
- *
- **********************************************************************/
-void hb_stream_set_audio_id_and_codec(hb_stream_t *stream, hb_audio_t *audio)
+static void add_audio_to_title(hb_title_t *title, int id)
{
- off_t cur_pos;
- cur_pos = ftello(stream->file_handle);
- int done = 0;
- hb_buffer_t *buf = NULL;
+ hb_audio_t *audio = calloc( sizeof( hb_audio_t ), 1 );
- int cur_audio_pid_index = stream->ts_selected_audio_pid_index;
+ audio->id = id;
+ switch ( id >> 12 )
+ {
+ case 0x0:
+ audio->config.in.codec = HB_ACODEC_MPGA;
+ hb_log("add_audio_to_title: added MPEG audio stream 0x%x", id);
+ break;
+ case 0x2:
+ // type 2 is a DVD subtitle stream - just ignore it */
+ free( audio );
+ return;
+ case 0x8:
+ audio->config.in.codec = HB_ACODEC_AC3;
+ hb_log("add_audio_to_title: added AC3 audio stream 0x%x", id);
+ break;
+ case 0xa:
+ audio->config.in.codec = HB_ACODEC_LPCM;
+ hb_log("add_audio_to_title: added LPCM audio stream 0x%x", id);
+ break;
+ default:
+ hb_log("add_audio_to_title: unknown audio stream type 0x%x", id);
+ free( audio );
+ return;
- if (stream->stream_type == hb_stream_type_transport)
- {
- int i=0;
- for (i=0; i < stream->ts_number_audio_pids; i++)
- {
- if (stream->ts_audio_pids[i] == audio->source_pid)
- {
- stream->ts_selected_audio_pid_index = i;
- break;
- }
- }
- }
-
- //Start at the beginning of the stream
- hb_stream_seek(stream, 0.0f);
-// fseeko(stream->file_handle,0 ,SEEK_SET);
-
- // Now we must scan forwards for a valid audio start code (0x000001xx)
- buf = hb_buffer_init(HB_DVD_READ_BUFFER_SIZE);
- while (!done)
- {
-// if (fread(buf->data,4096,1,stream->file_handle) == 1)
- if (hb_stream_read(stream, buf) == 1)
- {
- int i=0;
- for (i=0; (i <= HB_DVD_READ_BUFFER_SIZE-4) && (!done); i++)
- {
- if ((buf->data[i] == 0x00) && (buf->data[i+1] == 0x00) && (buf->data[i+2] == 0x01))
- {
- if (buf->data[i+3] == 0xbd)
- {
- audio->id = 0x80bd;
- audio->codec = HB_ACODEC_AC3;
- done = 1;
- }
- else if ((buf->data[i+3] & 0xe0) == 0xc0)
- {
- audio->id = buf->data[i+3];
- audio->codec = HB_ACODEC_MPGA;
- done = 1;
- }
- }
- }
- }
- else
- done = 1; // End of data;
- }
- hb_buffer_close(&buf);
-
- fseeko(stream->file_handle, cur_pos, SEEK_SET);
-
- stream->ts_selected_audio_pid_index = cur_audio_pid_index;
+ }
+ set_audio_description( audio, lang_for_code( 0 ) );
+ hb_list_add( title->list_audio, audio );
}
-/***********************************************************************
- * hb_stream_update_audio
- ***********************************************************************
- *
- **********************************************************************/
-void hb_stream_update_audio(hb_stream_t *stream, hb_audio_t *audio)
+static void hb_ps_stream_find_audio_ids(hb_stream_t *stream, hb_title_t *title)
{
- iso639_lang_t *lang;
-
- if (stream->stream_type == hb_stream_type_program)
- {
- lang = lang_for_code(0x0000);
- }
- else if (stream->stream_type == hb_stream_type_transport)
- {
- // Find the audio stream info for this PID
- int i=0;
- for (i=0; i < stream->ts_number_audio_pids; i++)
- {
- if (stream->ts_audio_pids[i] == audio->source_pid)
- break;
- }
- if (i == stream->ts_number_audio_pids)
- {
- hb_log("hb_stream_update_audio - cannot find PID 0x%x (%d) in ts_audio_pids list !", audio->source_pid, audio->source_pid);
- return;
- }
-
- lang = lang_for_code(stream->a52_info[i].lang_code);
- audio->rate = stream->a52_info[i].rate;
- audio->bitrate = stream->a52_info[i].bitrate;
- audio->config.a52.ac3flags = audio->ac3flags = stream->a52_info[i].flags;
-
- }
-
- switch( audio->ac3flags & A52_CHANNEL_MASK )
- {
- /* mono sources */
- case A52_MONO:
- case A52_CHANNEL1:
- case A52_CHANNEL2:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_MONO;
- break;
- /* stereo input */
- case A52_CHANNEL:
- case A52_STEREO:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_STEREO;
- break;
- /* dolby (DPL1 aka Dolby Surround = 4.0 matrix-encoded) input */
- case A52_DOLBY:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_DOLBY;
- break;
- /* 3F/2R input */
- case A52_3F2R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_3F2R;
- break;
- /* 3F/1R input */
- case A52_3F1R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_3F1R;
- break;
- /* other inputs */
- case A52_3F:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_3F;
- break;
- case A52_2F1R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_2F1R;
- break;
- case A52_2F2R:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_2F2R;
- break;
- /* unknown */
- default:
- audio->input_channel_layout = HB_INPUT_CH_LAYOUT_STEREO;
- }
-
- /* add in our own LFE flag if the source has LFE */
- if (audio->ac3flags & A52_LFE)
- {
- audio->input_channel_layout = audio->input_channel_layout | HB_INPUT_CH_LAYOUT_HAS_LFE;
- }
-
- snprintf( audio->lang, sizeof( audio->lang ), "%s (%s)", strlen(lang->native_name) ? lang->native_name : lang->eng_name,
- audio->codec == HB_ACODEC_AC3 ? "AC3" : ( audio->codec == HB_ACODEC_MPGA ? "MPEG" : "LPCM" ) );
- snprintf( audio->lang_simple, sizeof( audio->lang_simple ), "%s", strlen(lang->native_name) ? lang->native_name : lang->eng_name );
- snprintf( audio->iso639_2, sizeof( audio->iso639_2 ), "%s", lang->iso639_2);
-
- if ( (audio->ac3flags & A52_CHANNEL_MASK) == A52_DOLBY ) {
- sprintf( audio->lang + strlen( audio->lang ),
- " (Dolby Surround)" );
- } else {
- sprintf( audio->lang + strlen( audio->lang ),
- " (%d.%d ch)",
- HB_INPUT_CH_LAYOUT_GET_DISCRETE_FRONT_COUNT(audio->input_channel_layout) +
- HB_INPUT_CH_LAYOUT_GET_DISCRETE_REAR_COUNT(audio->input_channel_layout),
- HB_INPUT_CH_LAYOUT_GET_DISCRETE_LFE_COUNT(audio->input_channel_layout));
- }
-
- hb_log( "hb_stream_update_audio: id=%x, lang=%s, 3cc=%s, rate = %d, bitrate = %d, flags = 0x%x (%d)", audio->id, audio->lang, audio->iso639_2, audio->rate, audio->bitrate, audio->ac3flags, audio->ac3flags );
-
-}
+ off_t cur_pos = ftello(stream->file_handle);
+ hb_buffer_t *buf = hb_buffer_init(HB_DVD_READ_BUFFER_SIZE);
+ hb_list_t *list = hb_list_init();
+ // how many blocks we read while searching for audio streams
+ int blksleft = 4096;
+ // there can be at most 16 unique streams in an MPEG PS (8 in a DVD)
+ // so we use a bitmap to keep track of the ones we've already seen.
+ // Bit 'i' of smap is set if we've already added the audio for
+ // audio substream id 'i' to the title's audio list.
+ uint32_t smap = 0;
+
+ // start looking 20% into the file since there's occasionally no
+ // audio at the beginning (particularly for vobs).
+ hb_stream_seek(stream, 0.2f);
+
+ while (--blksleft >= 0 && hb_stream_read(stream, buf) == 1)
+ {
+ hb_buffer_t *es;
-void hb_stream_set_selected_audio_pid_index(hb_stream_t *stream, int i)
-{
- stream->ts_selected_audio_pid_index = i;
-}
+ // 'buf' contains an MPEG2 PACK - get a list of all it's elementary streams
+ hb_demux_ps(buf, list);
-/***********************************************************************
- * hb_stream_put_back
- ***********************************************************************
- *
- **********************************************************************/
-static void hb_stream_put_back(hb_stream_t *stream, int i)
-{
- if (stream->stream_type == hb_stream_type_program)
- {
- // Program streams are pretty easy - we just reposition the source file
- // pointer
- fseeko(stream->file_handle, -(HB_DVD_READ_BUFFER_SIZE-i), SEEK_CUR);
- }
- else if (stream->stream_type == hb_stream_type_transport)
- {
- int read_buffer_index = stream->ps_current_read_buffer_index;
-
- // Transport streams are a little more tricky - so long as the
- // amount to back up is still within the current decode buffer
- // we can just adjust the read pos.
- if (stream->ps_decode_buffer[read_buffer_index].read_pos - i > 0)
- {
- stream->ps_decode_buffer[read_buffer_index].read_pos -= i;
- }
- else
- hb_error("hb_stream_put_back - trying to step beyond the start of the buffer, read_pos = %d amt to put back = %d\n", stream->ps_decode_buffer[read_buffer_index].read_pos, i);
- }
+ while ( ( es = hb_list_item( list, 0 ) ) )
+ {
+ hb_list_rem( list, es );
+ if ( (es->id & 0xff) == 0xbd || (es->id & 0xe0) == 0xc0 )
+ {
+ // this PES contains some kind of audio - get the substream id
+ // and check if we've seen it already.
+ int ssid = (es->id > 0xff ? es->id >> 8 : es->id) & 0xf;
+ if ( (smap & (1 << ssid)) == 0 )
+ {
+ // we haven't seen this stream before - add it to the
+ // title's list of audio streams.
+ smap |= (1 << ssid);
+ add_audio_to_title(title, es->id);
+ }
+ }
+ hb_buffer_close( &es );
+ }
+ }
+ hb_list_empty( &list );
+ hb_buffer_close(&buf);
+ fseeko(stream->file_handle, cur_pos, SEEK_SET);
}
-
/***********************************************************************
* hb_ts_stream_init
***********************************************************************
*
**********************************************************************/
- #define PS_DECODE_BUFFER_SIZE ( 1024 * 1024 * 4)
-
+
static void hb_ts_stream_init(hb_stream_t *stream)
{
- // Output Program Stream
- int i=0;
- for (i=0; i < kNumDecodeBuffers; i++)
- {
- stream->ps_decode_buffer[i].data = (unsigned char *) malloc(PS_DECODE_BUFFER_SIZE);
- stream->ps_decode_buffer[i].read_pos = 0;
- stream->ps_decode_buffer[i].size = PS_DECODE_BUFFER_SIZE;
- stream->ps_decode_buffer[i].len = 0;
- stream->ps_decode_buffer[i].write_pos = 0;
- }
-
+ int i;
+
for (i=0; i < kMaxNumberDecodeStreams; i++)
{
stream->ts_streamcont[i] = -1;
}
-
- stream->ps_current_write_buffer_index = 0;
- stream->ps_current_read_buffer_index = 1;
-
- // This is the index (in ts_audio_pids) of the selected
- // output stream. It should not be set until after all the
- // pids in the stream have been discovered.
- stream->ts_selected_audio_pid_index = -1;
-
- stream->debug_output = fopen("/Users/awk/Desktop/hb_debug.mpg", "wb");
-
+ stream->ts_video_pids[0] = -1;
+ for ( i = 0; i < stream->ts_number_audio_pids; i++ )
+ {
+ stream-> ts_audio_pids[i] = -1;
+ }
+
// Find the audio and video pids in the stream
hb_ts_stream_find_pids(stream);
-
- for (i=0; i < stream->ts_number_video_pids; i++)
- {
- // In progress audio/video data during the transport stream -> program stream processing
- stream->ts_packetbuf[i] = (unsigned char *) malloc(1024 * 1024);
- stream->ts_streamid[i] = 0xE0; // Stream is Video
- }
-
- for (i = stream->ts_number_video_pids; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
+
+ stream->ts_streamid[0] = 0xE0; // stream 0 must be video
+
+ for (i = 0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
{
- stream->ts_packetbuf[i] = (unsigned char *) malloc(1024 * 1024);
- stream->ts_streamid[i] = 0xBD; // Stream 1 is AC-3 Audio
+ // demuxing buffer for TS to PS conversion
+ stream->ts_buf[i] = malloc( HB_DVD_READ_BUFFER_SIZE );
}
}
// ------------------------------------------------------------------------------------
-off_t align_to_next_packet(FILE* f)
+static off_t align_to_next_packet(FILE* f)
{
unsigned char buf[188*20];
if (pos == 188)
pos = 0; // failed to find anything!!!!!?
- fseek(f, start+pos, SEEK_SET);
+ fseeko(f, start+pos, SEEK_SET);
return pos;
}
-// ------------------------------------------------------------------------------------
-int bitpos = 0;
-unsigned int bitval = 0;
-unsigned char* bitbuf = NULL;
-unsigned int bitmask[] = {
+typedef struct {
+ uint8_t *buf;
+ uint32_t val;
+ int pos;
+} bitbuf_t;
+
+static const unsigned int bitmask[] = {
0x0,0x1,0x3,0x7,0xf,0x1f,0x3f,0x7f,0xff,
0x1ff,0x3ff,0x7ff,0xfff,0x1fff,0x3fff,0x7fff,0xffff,
0x1ffff,0x3ffff,0x7ffff,0xfffff,0x1fffff,0x3fffff,0x7fffff,0xffffff,
0x1ffffff,0x3ffffff,0x7ffffff,0xfffffff,0x1fffffff,0x3fffffff,0x7fffffff,0xffffffff};
-static inline void set_buf(unsigned char* buf, int bufsize, int clear)
+static inline void set_buf(bitbuf_t *bb, uint8_t* buf, int bufsize, int clear)
{
- bitpos = 0;
- bitbuf = buf;
- bitval = (bitbuf[0] << 24) | (bitbuf[1] << 16) | (bitbuf[2] << 8) | bitbuf[3];
+ bb->pos = 0;
+ bb->buf = buf;
+ bb->val = (bb->buf[0] << 24) | (bb->buf[1] << 16) |
+ (bb->buf[2] << 8) | bb->buf[3];
if (clear)
- memset(bitbuf, 0, bufsize);
-}
-
-static inline int buf_size()
-{
- return bitpos >> 3;
+ memset(bb->buf, 0, bufsize);
}
-static inline void set_bits(unsigned int val, int bits)
+static inline int buf_size(bitbuf_t *bb)
{
- val &= bitmask[bits];
-
- while (bits > 0)
- {
- int bitsleft = (8 - (bitpos & 7));
- if (bits >= bitsleft)
- {
- bitbuf[bitpos >> 3] |= val >> (bits - bitsleft);
- bitpos += bitsleft;
- bits -= bitsleft;
- val &= bitmask[bits];
- }
- else
- {
- bitbuf[bitpos >> 3] |= val << (bitsleft - bits);
- bitpos += bits;
- bits = 0;
- }
- }
+ return bb->pos >> 3;
}
-static inline unsigned int get_bits(int bits)
+static inline unsigned int get_bits(bitbuf_t *bb, int bits)
{
unsigned int val;
- int left = 32 - (bitpos & 31);
+ int left = 32 - (bb->pos & 31);
if (bits < left)
{
- val = (bitval >> (left - bits)) & bitmask[bits];
- bitpos += bits;
+ val = (bb->val >> (left - bits)) & bitmask[bits];
+ bb->pos += bits;
}
else
{
- val = (bitval & bitmask[left]) << (bits - left);
- bitpos += left;
+ val = (bb->val & bitmask[left]) << (bits - left);
+ bb->pos += left;
bits -= left;
- int pos = bitpos >> 3;
- bitval = (bitbuf[pos] << 24) | (bitbuf[pos + 1] << 16) | (bitbuf[pos + 2] << 8) | bitbuf[pos + 3];
-
+ int pos = bb->pos >> 3;
+ bb->val = (bb->buf[pos] << 24) | (bb->buf[pos + 1] << 16) | (bb->buf[pos + 2] << 8) | bb->buf[pos + 3];
+
if (bits > 0)
{
- val |= (bitval >> (32 - bits)) & bitmask[bits];
- bitpos += bits;
+ val |= (bb->val >> (32 - bits)) & bitmask[bits];
+ bb->pos += bits;
}
}
return val;
}
-// ------------------------------------------------------------------------------------
+// extract what useful information we can from the elementary stream
+// descriptor list at 'dp' and add it to the stream at 'esindx'.
+// Descriptors with info we don't currently use are ignored.
+// The descriptor list & descriptor item formats are defined in
+// ISO 13818-1 (2000E) section 2.6 (pg. 62).
+static void decode_element_descriptors(hb_stream_t* stream, int esindx,
+ const uint8_t *dp, uint8_t dlen)
+{
+ const uint8_t *ep = dp + dlen;
+
+ while (dp < ep)
+ {
+ switch (dp[0])
+ {
+ case 10: // ISO_639_language descriptor
+ stream->a52_info[esindx].lang_code = lang_to_code(lang_for_code2((const char *)&dp[2]));
+ break;
+
+ default:
+ break;
+ }
+ dp += dp[1] + 2;
+ }
+}
-int decode_program_map(unsigned char *buf, hb_stream_t *stream)
+/*
+ * Get the name of the stream from the type - thanks to VLC for this.
+ */
+static const char *get_stream_name (unsigned char stream_type)
{
- unsigned char tablebuf[1024];
- unsigned int tablepos = 0;
-
- int reading = 0;
+ switch( stream_type )
+ {
+ case 0x01: /* MPEG-1 video */
+ case 0x02: /* MPEG-2 video */
+ case 0x80: /* MPEG-2 MOTO video */
+ return("MPEG 1/2 Video");
+ break;
+ case 0x03: /* MPEG-1 audio */
+ case 0x04: /* MPEG-2 audio */
+ return("MPEG Audio");
+ break;
+ case 0x11: /* MPEG4 (audio) */
+ case 0x0f: /* ISO/IEC 13818-7 Audio with ADTS transport syntax */
+ return("MPEG-4 Audio");
+ break;
+ case 0x10: /* MPEG4 (video) */
+ return("MPEG-4 Video");
+ break;
+ case 0x1B: /* H264 <- check transport syntax/needed descriptor */
+ return("H.264 Video");
+ break;
+
+ case 0x81: /* A52 (audio) */
+ return("A52/AC-3 Audio");
+ break;
+ case 0x82: /* DVD_SPU (sub) */
+ return("Subtitle");
+ break;
+ case 0x83: /* LPCM (audio) */
+ return("LPCM Audio");
+ break;
+ case 0x84: /* SDDS (audio) */
+ return("SDDS Audio");
+ break;
+ case 0x85: /* DTS (audio) */
+ return("DTS Audio");
+ break;
+
+ case 0x91: /* A52 vls (audio) */
+ return("A52b/AC-3 Audio");
+ break;
+ case 0x92: /* DVD_SPU vls (sub) */
+ return("Subtitle");
+ break;
+
+ case 0x94: /* SDDS (audio) */
+ return("SDDS Audio");
+ break;
+
+ case 0xa0: /* MSCODEC vlc (video) (fixed later) */
+ return("MSCODEC Video");
+ break;
+
+ case 0x06: /* PES_PRIVATE (fixed later) */
+ case 0x12: /* MPEG-4 generic (sub/scene/...) (fixed later) */
+ case 0xEA: /* Privately managed ES (VC-1) (fixed later */
+ default:
+ return("Other");
+ break;
+ }
+}
+
+int decode_program_map(hb_stream_t* stream)
+{
+ bitbuf_t bb;
+ set_buf(&bb, stream->pmt_info.tablebuf, stream->pmt_info.tablepos, 0);
+
+ get_bits(&bb, 8); // table_id
+ get_bits(&bb, 4);
+ unsigned int section_length = get_bits(&bb, 12);
+ stream->pmt_info.section_length = section_length;
+
+ unsigned int program_number = get_bits(&bb, 16);
+ stream->pmt_info.program_number = program_number;
+ get_bits(&bb, 2);
+ get_bits(&bb, 5); // version_number
+ get_bits(&bb, 1);
+ get_bits(&bb, 8); // section_number
+ get_bits(&bb, 8); // last_section_number
+ get_bits(&bb, 3);
+ unsigned int PCR_PID = get_bits(&bb, 13);
+ stream->pmt_info.PCR_PID = PCR_PID;
+ get_bits(&bb, 4);
+ unsigned int program_info_length = get_bits(&bb, 12);
+ stream->pmt_info.program_info_length = program_info_length;
+
+ int i=0;
+ unsigned char *descriptor_buf = (unsigned char *) malloc(program_info_length);
+ for (i = 0; i < program_info_length; i++)
+ {
+ descriptor_buf[i] = get_bits(&bb, 8);
+ }
+
+ int cur_pos = 9 /* data after the section length field*/ + program_info_length;
+ int done_reading_stream_types = 0;
+ while (!done_reading_stream_types)
+ {
+ unsigned char stream_type = get_bits(&bb, 8);
+ get_bits(&bb, 3);
+ unsigned int elementary_PID = get_bits(&bb, 13);
+ get_bits(&bb, 4);
+ unsigned int ES_info_length = get_bits(&bb, 12);
+
+ int i=0;
+ unsigned char *ES_info_buf = (unsigned char *) malloc(ES_info_length);
+ for (i=0; i < ES_info_length; i++)
+ {
+ ES_info_buf[i] = get_bits(&bb, 8);
+ }
+
+
+ if (stream_type == 0x02 || stream_type == 0x10 || stream_type == 0x1B)
+ {
+ /* MPEG-2/MPEG-4/H.264 */
+ if (stream->ts_number_video_pids <= kMaxNumberVideoPIDS)
+ stream->ts_number_video_pids++;
+ stream->ts_video_pids[stream->ts_number_video_pids-1] = elementary_PID;
+ stream->ts_video_stream_type[stream->ts_number_video_pids-1] = stream_type;
+ }
+ else
+ {
+ // Defined audio stream types are 0x81 for AC-3/A52 audio and 0x03
+ // for mpeg audio. But content producers seem to use other
+ // values (0x04 and 0x06 have both been observed) so at this point
+ // we say everything that isn't a video pid is audio then at the end
+ // of hb_stream_title_scan we'll figure out which are really audio
+ // by looking at the PES headers.
+ i = stream->ts_number_audio_pids;
+ if (i < kMaxNumberAudioPIDS)
+ stream->ts_number_audio_pids++;
+ stream->ts_audio_pids[i] = elementary_PID;
+ stream->ts_audio_stream_type[1 + i] = stream_type;
+
+ if (ES_info_length > 0)
+ {
+ decode_element_descriptors(stream, i, ES_info_buf, ES_info_length);
+ }
+ }
+
+ cur_pos += 5 /* stream header */ + ES_info_length;
+
+ free(ES_info_buf);
+
+ if (cur_pos >= section_length - 4 /* stop before the CRC */)
+ done_reading_stream_types = 1;
+ }
+
+ free(descriptor_buf);
+ return 1;
+}
+// ------------------------------------------------------------------------------------
+int build_program_map(unsigned char *buf, hb_stream_t *stream)
+{
// Get adaption header info
int adapt_len = 0;
int adaption = (buf[3] & 0x30) >> 4;
if (adapt_len > 184)
return 0;
- // Get pointer length
- int pointer_len = buf[4 + adapt_len] + 1;
-
// Get payload start indicator
int start;
start = (buf[1] & 0x40) != 0;
- if (start)
- reading = 1;
+ // Get pointer length - only valid in packets with a start flag
+ int pointer_len = 0;
+ if (start && stream->pmt_info.reading)
+ {
+ // We just finished a bunch of packets - parse the program map details
+ int decode_ok = 0;
+ if (stream->pmt_info.tablebuf[0] == 0x02)
+ decode_ok = decode_program_map(stream);
+ free(stream->pmt_info.tablebuf);
+ stream->pmt_info.tablebuf = NULL;
+ stream->pmt_info.tablepos = 0;
+ stream->pmt_info.reading = 0;
+ if (decode_ok)
+ return decode_ok;
+ }
- // Add the payload for this packet to the current buffer
- if (reading && (184 - adapt_len) > 0)
- {
- if (tablepos + 184 - adapt_len - pointer_len > 1024)
- {
- hb_log("decode_program_map - Bad program section length (> 1024)");
- return 0;
- }
- memcpy(tablebuf + tablepos, buf + 4 + adapt_len + pointer_len, 184 - adapt_len - pointer_len);
- tablepos += 184 - adapt_len - pointer_len;
- }
+ if (start)
+ {
+ pointer_len = buf[4 + adapt_len] + 1;
+ stream->pmt_info.tablepos = 0;
+ }
+ // Get Continuity Counter
+ int continuity_counter = buf[3] & 0x0f;
+ if (!start && (stream->pmt_info.current_continuity_counter + 1 != continuity_counter))
+ {
+ hb_log("build_program_map - Continuity Counter %d out of sequence - expected %d", continuity_counter, stream->pmt_info.current_continuity_counter+1);
+ return 0;
+ }
+ stream->pmt_info.current_continuity_counter = continuity_counter;
+ stream->pmt_info.reading |= start;
- if (start && reading)
+ // Add the payload for this packet to the current buffer
+ int amount_to_copy = 184 - adapt_len - pointer_len;
+ if (stream->pmt_info.reading && (amount_to_copy > 0))
{
- int done_reading_stream_types = 0;
-
- memcpy(tablebuf + tablepos, buf + 4 + adapt_len + 1, pointer_len - 1);
-
- unsigned int pos = 0;
- set_buf(tablebuf + pos, tablepos - pos, 0);
-
- unsigned char section_id = get_bits(8);
- get_bits(4);
- unsigned int section_length = get_bits(12);
- unsigned int program_number = get_bits(16);
- get_bits(2);
- unsigned char version_number = get_bits(5);
- get_bits(1);
- unsigned char section_number = get_bits(8);
- unsigned char last_section_number = get_bits(8);
- get_bits(3);
- unsigned int PCR_PID = get_bits(13);
- get_bits(4);
- unsigned int program_info_length = get_bits(12);
- int i=0;
- unsigned char *descriptor_buf = (unsigned char *) malloc(program_info_length);
- for (i = 0; i < program_info_length; i++)
- {
- descriptor_buf[i] = get_bits(8);
- }
-
- int cur_pos = 9 /* data so far */ + program_info_length;
- done_reading_stream_types = 0;
- while (!done_reading_stream_types)
- {
- unsigned char stream_type = get_bits(8);
- get_bits(3);
- unsigned int elementary_PID = get_bits(13);
- get_bits(4);
- unsigned int ES_info_length = get_bits(12);
-
- int i=0;
- unsigned char *ES_info_buf = (unsigned char *) malloc(ES_info_length);
- for (i=0; i < ES_info_length; i++)
- {
- ES_info_buf[i] = get_bits(8);
- }
-
- if (stream_type == 0x02)
- {
- if (stream->ts_number_video_pids <= kMaxNumberVideoPIDS)
- stream->ts_number_video_pids++;
- stream->ts_video_pids[stream->ts_number_video_pids-1] = elementary_PID;
- }
- if ((stream_type == 0x04) || (stream_type == 0x81) || (stream_type == 0x03) || (stream_type == 0x06)) // ATSC Defines stream type 0x81 for AC-3/A52 audio, there's also some evidence of streams using type 6 for AC-3 audio too
- {
- if (stream->ts_number_audio_pids <= kMaxNumberAudioPIDS)
- stream->ts_number_audio_pids++;
- stream->ts_audio_pids[stream->ts_number_audio_pids-1] = elementary_PID;
-
- stream->a52_info[stream->ts_number_audio_pids-1].lang_code = 'e' << 8 | 'n';
- stream->ts_audio_stream_type[stream->ts_number_audio_pids-1] = stream_type;
-
- if (ES_info_length > 0)
- {
- hb_log("decode_program_map - Elementary Stream Info Present, decode language codes ?");
- }
-
- }
+ stream->pmt_info.tablebuf = realloc(stream->pmt_info.tablebuf, stream->pmt_info.tablepos + amount_to_copy);
- cur_pos += 5 /* stream header */ + ES_info_length;
-
- free(ES_info_buf);
-
- if (cur_pos >= section_length - 4 /* stop before the CRC */)
- done_reading_stream_types = 1;
- }
-
- free(descriptor_buf);
+ memcpy(stream->pmt_info.tablebuf + stream->pmt_info.tablepos, buf + 4 + adapt_len + pointer_len, amount_to_copy);
+ stream->pmt_info.tablepos += amount_to_copy;
}
-
- return 1;
+
+ return 0;
}
-int decode_PAT(unsigned char *buf, unsigned int *program_num, unsigned int *network_PID, unsigned int *program_map_PID)
+int decode_PAT(unsigned char *buf, hb_stream_t *stream)
{
-// int maxchannels = 8;
-// static ATSC_CHANNEL_INFO* channels;
-//
-// if (channels == NULL)
-// channels = (ATSC_CHANNEL_INFO*) malloc(maxchannels * sizeof(ATSC_CHANNEL_INFO));
-//
-// int numchannels;
-
unsigned char tablebuf[1024];
unsigned int tablepos = 0;
-
+
int reading = 0;
{
memcpy(tablebuf + tablepos, buf + 4 + adapt_len + 1, pointer_len - 1);
+
unsigned int pos = 0;
//while (pos < tablepos)
{
- set_buf(tablebuf + pos, tablepos - pos, 0);
-
- unsigned char section_id = get_bits(8);
- get_bits(4);
- unsigned int section_len = get_bits(12);
- unsigned int transport_id = get_bits(16);
- get_bits(2);
- unsigned int version_num = get_bits(5);
- unsigned int current_next = get_bits(1);
- unsigned int section_num = get_bits(8);
- unsigned int last_section = get_bits(8);
-// unsigned int protocol_ver = get_bits(8);
+ bitbuf_t bb;
+ set_buf(&bb, tablebuf + pos, tablepos - pos, 0);
+
+ unsigned char section_id = get_bits(&bb, 8);
+ get_bits(&bb, 4);
+ unsigned int section_len = get_bits(&bb, 12);
+ get_bits(&bb, 16); // transport_id
+ get_bits(&bb, 2);
+ get_bits(&bb, 5); // version_num
+ get_bits(&bb, 1); // current_next
+ get_bits(&bb, 8); // section_num
+ get_bits(&bb, 8); // last_section
switch (section_id)
{
section_len -= 5; // Already read transport stream ID, version num, section num, and last section num
section_len -= 4; // Ignore the CRC
int curr_pos = 0;
- while (curr_pos < section_len)
+ stream->ts_number_pat_entries = 0;
+ while ((curr_pos < section_len) && (stream->ts_number_pat_entries < kMaxNumberPMTStreams))
{
- unsigned int pkt_program_num = get_bits(16);
- if (program_num)
- *program_num = pkt_program_num;
-
- get_bits(3); // Reserved
+ unsigned int pkt_program_num = get_bits(&bb, 16);
+ stream->pat_info[stream->ts_number_pat_entries].program_number = pkt_program_num;
+
+ get_bits(&bb, 3); // Reserved
if (pkt_program_num == 0)
{
- unsigned int pkt_network_PID = get_bits(13);
-// printf("PAT - Transport ID = 0x%x (%d) program_num 0x%x (%d) network_PID = 0x%x (%d)\n", transport_id, transport_id, pkt_program_num, pkt_program_num, pkt_network_PID, pkt_network_PID);
- if (network_PID)
- *network_PID = pkt_network_PID;
-
+ get_bits(&bb, 13); // pkt_network_id
}
else
{
- unsigned int pkt_program_map_PID = get_bits(13);
-// printf("PAT - Transport ID = 0x%x (%d) program_num 0x%x (%d) program_map_PID = 0x%x (%d)\n", transport_id, transport_id, pkt_program_num, pkt_program_num, pkt_program_map_PID, pkt_program_map_PID);
- if (program_map_PID)
- *program_map_PID = pkt_program_map_PID;
+ unsigned int pkt_program_map_PID = get_bits(&bb, 13);
+ stream->pat_info[stream->ts_number_pat_entries].program_map_PID = pkt_program_map_PID;
}
curr_pos += 4;
+ stream->ts_number_pat_entries++;
}
}
break;
return 1;
}
-static int flushbuf(hb_stream_t *stream)
+static void hb_ts_stream_find_pids(hb_stream_t *stream)
{
- int old_write_index = stream->ps_current_write_buffer_index;
+ unsigned char buf[188];
- if (stream->debug_output)
- {
- fwrite(stream->ps_decode_buffer[stream->ps_current_write_buffer_index].data, stream->ps_decode_buffer[stream->ps_current_write_buffer_index].len, 1, stream->debug_output);
- }
-
- // Flip the buffers and start moving on to the next
- stream->ps_current_write_buffer_index++;
- if (stream->ps_current_write_buffer_index > kNumDecodeBuffers-1)
- stream->ps_current_write_buffer_index = 0;
-
- if ( (stream->ps_decode_buffer[stream->ps_current_write_buffer_index].len != 0) || (stream->ps_decode_buffer[stream->ps_current_write_buffer_index].write_pos != 0) )
- {
- hb_log("flushbuf - new buffer (index %d) has non zero length and write position !", stream->ps_current_write_buffer_index);
- return 0;
- }
-
- stream->ps_current_read_buffer_index = old_write_index;
- stream->ps_decode_buffer[stream->ps_current_read_buffer_index].read_pos = 0;
-
- return 1;
-}
+ // align to first packet
+ align_to_next_packet(stream->file_handle);
-static int fwrite64(void* buf, int elsize, int elnum, hb_stream_t* stream)
-{
- int size = elsize;
- if (elnum > 1)
- size *= elnum;
-
- int written = 0;
- int current_write_index = stream->ps_current_write_buffer_index;
-
- if (size <= stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos)
- {
- memcpy(stream->ps_decode_buffer[current_write_index].data + stream->ps_decode_buffer[current_write_index].write_pos, buf, size);
- stream->ps_decode_buffer[current_write_index].write_pos += size;
- stream->ps_decode_buffer[current_write_index].len = stream->ps_decode_buffer[current_write_index].write_pos;
- written = size;
- }
- else
+ // Read the Transport Stream Packets (188 bytes each) looking at first for PID 0 (the PAT PID), then decode that
+ // to find the program map PID and then decode that to get the list of audio and video PIDs
+
+ int bytesReadInPacket = 0;
+ for (;;)
{
- memcpy(stream->ps_decode_buffer[current_write_index].data + stream->ps_decode_buffer[current_write_index].write_pos, buf, stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos);
- written += stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos;
- stream->ps_decode_buffer[current_write_index].write_pos += stream->ps_decode_buffer[current_write_index].size - stream->ps_decode_buffer[current_write_index].write_pos;
- stream->ps_decode_buffer[current_write_index].len = stream->ps_decode_buffer[current_write_index].write_pos;
+ // Try to read packet..
+ int bytesRead;
+ if ((bytesRead = fread(buf+bytesReadInPacket, 1, 188-bytesReadInPacket, stream->file_handle)) != 188-bytesReadInPacket)
+ {
+ if (bytesRead < 0)
+ bytesRead = 0;
+ bytesReadInPacket += bytesRead;
- if (flushbuf(stream))
+ hb_log("hb_ts_stream_find_pids - end of file");
+ break;
+ }
+ else
{
- // FLushing the buffer will have change the current write buffer
- current_write_index = stream->ps_current_write_buffer_index;
-
- memcpy(stream->ps_decode_buffer[current_write_index].data, (unsigned char*)buf + written, size - written);
- stream->ps_decode_buffer[current_write_index].write_pos += size - written;
- stream->ps_decode_buffer[current_write_index].len = stream->ps_decode_buffer[current_write_index].write_pos;
- written += size - written;
+ bytesReadInPacket = 0;
}
- }
-
-
- if (elnum == 1 && written == size)
- return 1;
- else
- return written / elsize;
-}
-static int write_pack(hb_stream_t* stream, int64_t time)
-{
- unsigned char buf[64];
- set_buf(buf, 64, 1); // clear buffer
-
- int64_t ext_time = time % 300;
- time = time / 300;
-
- set_bits(0x000001ba, 32); // pack id 32
- set_bits(1, 2); // 0x01 2
- set_bits((unsigned int)(time >> 30), 3); // system_clock_reference_base 3
- set_bits(1, 1); // marker_bit 1
- set_bits((unsigned int)(time >> 15), 15); // system_clock_reference_base 15
- set_bits(1, 1); // marker_bit 1
- set_bits((unsigned int)time, 15); // system_clock_reference_base1 15
- set_bits(1, 1); // marker_bit 1
- set_bits((unsigned int)ext_time, 9); // system_clock_reference_extension 9
- set_bits(1, 1); // marker_bit 1
- set_bits(DEMUX, 22); // program_mux_rate 22
- set_bits(1, 1); // marker_bit 1
- set_bits(1, 1); // marker_bit 1
- set_bits(31, 5); // reserved 5
- set_bits(0, 3); // pack_stuffing_length 3
-
- return fwrite64(buf, buf_size(), 1, stream) == 1;
-}
+ // Check sync byte
+ if ((buf[0] != 0x47) && (buf[0] != 0x72) && (buf[0] != 0x29))
+ {
+ off_t pos = ftello(stream->file_handle) - 188;
+ off_t pos2 = align_to_next_packet(stream->file_handle);
+ if ( pos2 == 0 )
+ {
+ hb_log( "hb_ts_stream_find_pids: eof while re-establishing sync @ %lld",
+ pos );
+ break;
+ }
+ hb_log("hb_ts_stream_decode: sync lost @%lld, regained after %lld bytes",
+ pos, pos2 );
+ continue;
+ }
-static int pad_buffer(hb_stream_t *stream, int pad)
-{
- pad -= 6;
+ // Get pid
+ int pid = (((buf[1] & 0x1F) << 8) | buf[2]) & 0x1FFF;
- char buf[6];
- buf[0] = '\x0'; buf[1] = '\x0'; buf[2] = '\x1'; buf[3] = '\xbe';
- buf[4] = pad >> 8; buf[5] = pad & 0xff;
+ if ((pid == 0x0000) && (stream->ts_number_pat_entries == 0))
+ {
+ decode_PAT(buf, stream);
+ continue;
+ }
- if (fwrite64(buf, 6, 1, stream) != 1)
- return 0;
+ int pat_index = 0;
+ for (pat_index = 0; pat_index < stream->ts_number_pat_entries; pat_index++)
+ {
+ // There are some streams where the PAT table has multiple entries as if their are
+ // multiple programs in the same transport stream, and yet there's actually only one
+ // program really in the stream. This seems to be true for transport streams that
+ // originate in the HDHomeRun but have been output by EyeTV's export utility. What I think
+ // is happening is that the HDHomeRun is sending the entire transport stream as broadcast,
+ // but the EyeTV is only recording a single (selected) program number and not rewriting the
+ // PAT info on export to match what's actually on the stream.
+ // Until we have a way of handling multiple programs per transport stream elegantly we'll match
+ // on the first pat entry for which we find a matching program map PID. The ideal solution would
+ // be to build a title choice popup from the PAT program number details and then select from
+ // their - but right now the API's not capable of that.
+ if (pid == stream->pat_info[pat_index].program_map_PID)
+ {
+ if (build_program_map(buf, stream) > 0)
+ break;
+ }
+ }
+ // Keep going until we have a complete set of PIDs
+ if ((stream->ts_number_video_pids > 0) && (stream->ts_number_audio_pids > 0))
+ break;
+ }
- unsigned char padbyte = 0xff;
+ hb_log("hb_ts_stream_find_pids - found the following PIDS");
+ hb_log(" Video PIDS : ");
int i=0;
- for (i = 0; i < pad; i++)
+ for (i=0; i < stream->ts_number_video_pids; i++)
{
- if (fwrite64(&padbyte, 1, 1, stream) != 1)
- return 0;
+ hb_log(" 0x%x (%d) [Type %s (0x%x)]",
+ stream->ts_video_pids[i], stream->ts_video_pids[i],
+ get_stream_name(stream->ts_video_stream_type[i]),
+ stream->ts_video_stream_type[i]);
}
-
- return 1;
-}
-
-int make_pes_header(unsigned char* buf, int streamid, int len, int64_t PTS, int64_t DTS)
-{
- int hdrlen = 0;
- int PTS_DTS_flags = 0;
- if (PTS != -1)
+ hb_log(" Audio PIDS : ");
+ for (i = 0; i < stream->ts_number_audio_pids; i++)
{
- if (DTS != -1)
- {
- PTS_DTS_flags = 3;
- hdrlen += 10;
- }
- else
- {
- PTS_DTS_flags = 2;
- hdrlen += 5;
- }
+ hb_log(" 0x%x (%d) [Type %s (0x%x)]",
+ stream->ts_audio_pids[i], stream->ts_audio_pids[i],
+ get_stream_name(stream->ts_audio_stream_type[i]),
+ stream->ts_audio_stream_type[i] );
}
+ }
- set_buf(buf, 9 + hdrlen, 1); // clear the buffer
-
- set_bits(0x000001, 24); // packet_start_code_prefix 24
- set_bits((unsigned int)streamid, 8); // directory_stream_id 8
- set_bits(len, 16); // PES_packet_length 16
- set_bits(0x2, 2); // '10' 2
- set_bits(0, 2); // PES_scrambling_control 2
- set_bits(1, 1); // PES_priority 1
- set_bits(0, 1); // data_alignment_indicator 1
- set_bits(0, 1); // copyright 1
- set_bits(0, 1); // original_or_copy 1
- set_bits(PTS_DTS_flags, 2); // PTS_DTS_flags 2
- set_bits(0, 1); // ESCR_flag 1
- set_bits(0, 1); // ES_rate_flag 1
- set_bits(0, 1); // DSM_trick_mode_flag 1
- set_bits(0, 1); // additional_copy_info_flag 1
- set_bits(0, 1); // PES_CRC_flag 1
- set_bits(0, 1); // PES_extension_flag 1
- set_bits(hdrlen, 8); // PES_header_data_length 8
-
- if (PTS_DTS_flags == 2)
- {
- set_bits(2, 4); // '0010' 4
- set_bits((unsigned int)(PTS >> 30), 3); // PTS [32..30] 3
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)(PTS >> 15), 15); // PTS [29..15] 15
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)PTS, 15); // PTS [14..0] 15
- set_bits(1, 1); // marker bit 1
- }
- else if (PTS_DTS_flags == 3)
- {
- set_bits(3, 4); // '0011' 4
- set_bits((unsigned int)(PTS >> 30), 3); // PTS [32..30] 3
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)(PTS >> 15), 15); // PTS [29..15] 15
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)PTS, 15); // PTS [14..0] 15
- set_bits(1, 1); // marker bit 1
- set_bits(1, 4); // '0001' 4
- set_bits((unsigned int)(DTS >> 30), 3); // DTS [32..30] 3
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)(DTS >> 15), 15); // DTS [29..15] 15
- set_bits(1, 1); // marker bit 1
- set_bits((unsigned int)DTS, 15); // DTS [14..0] 15
- set_bits(1, 1); // marker bit 1
- }
- return buf_size();
+static void fwrite64( hb_stream_t *stream, void *buf, int size )
+{
+ if ( (stream->fwrite_buf - stream->fwrite_buf_orig) + size > 2048 )
+ {
+ hb_log( "steam fwrite64 buffer overflow - writing %d with %d already",
+ size, stream->fwrite_buf - stream->fwrite_buf_orig );
+ return;
+ }
+ memcpy( stream->fwrite_buf, buf, size );
+ stream->fwrite_buf += size;
}
-int generate_output_data(hb_stream_t *stream, int write_ac3, int curstream, int pid)
+static void write_pack(hb_stream_t* stream, uint64_t time, int stuffing)
{
- unsigned char ac3_substream_id[4];
- int ac3len = 0;
-
- if (write_ac3)
- {
- // Make a four byte ac3 streamid
- ac3_substream_id[0] = 0x80; // Four byte AC3 CODE??
- ac3_substream_id[1] = 0x01;
- ac3_substream_id[2] = 0x00; // WHY??? OH WHY??
- ac3_substream_id[3] = 0x02;
- ac3len = 4;
- }
-
- int written = 0; // Bytes we've written to output file
- int pos = 0; // Position in PES packet buffer
-
- for (;;)
- {
-// int64_t fpos = ftell64(fout);
- if ((stream->ps_decode_buffer[stream->ps_current_write_buffer_index].len % HB_DVD_READ_BUFFER_SIZE) != 0)
- {
- hb_log("write_output_stream - Packet's not falling on read buffer size boundries!");
- return 1;
- }
-
- // Get total length of this pack
- int len = min(14 + ac3len + stream->ts_packetpos[curstream] - pos, HB_DVD_READ_BUFFER_SIZE);
-
- // Figure out stuffing (if we have less than 16 bytes left)
- int stuffing = 0;
- if (len < HB_DVD_READ_BUFFER_SIZE && HB_DVD_READ_BUFFER_SIZE - len < 16)
- {
- stuffing = HB_DVD_READ_BUFFER_SIZE - len;
- len += stuffing;
- }
+ uint8_t buf[24];
- // Write out pack header
- off_t file_offset = ftello(stream->file_handle);
- int64_t packet_time = (file_offset * CLOCKRATE / STREAMRATE) + 0 /*file_time*/;
- if (!write_pack(stream, packet_time))
- {
- hb_log("write_output_stream - Couldn't write pack header!");
- return 1;
- }
+ buf[0] = 0x00; // pack id
+ buf[1] = 0x00;
+ buf[2] = 0x01;
+ buf[3] = 0xba;
-// if (pid == stream->ts_audio_pids[0])
-// stream->ts_packetbuf[curstream][pos + 3] = stream->ts_streamid[kAudioStream];
-// else
-// stream->ts_packetbuf[curstream][pos + 3] = stream->ts_streamid[kVideoStream];
- int index_of_selected_pid = -1;
- if ((index_of_selected_pid = index_of_video_pid(pid,stream)) < 0)
- {
- if ((index_of_selected_pid = index_of_audio_pid(pid,stream)) < 0)
- {
- hb_log("generate_output_data - cannot find pid 0x%x (%d) in selected audio or video pids", pid, pid);
- return 0;
- }
- else
- {
- stream->ts_packetbuf[curstream][pos + 3] = stream->ts_streamid[stream->ts_number_video_pids + index_of_selected_pid];
- }
- }
- else
- stream->ts_packetbuf[curstream][pos + 3] = stream->ts_streamid[index_of_selected_pid];
+ buf[4] = 0x44 | // SCR
+ ( ( ( time >> 30 ) & 7 ) << 3 ) |
+ ( ( time >> 28 ) & 3 );
+ buf[5] = time >> 20;
+ buf[6] = 0x04 |
+ ( ( ( time >> 15 ) & 0x1f ) << 3 ) |
+ ( ( time >> 13 ) & 3 );
+ buf[7] = time >> 5;
+ buf[8] = 0x04 | ( time << 3 );
- // Packet length..
- // Subtract pack size (14) and pes id and len (6) from lenth
- stream->ts_packetbuf[curstream][pos + 4] = (len - 6 - 14) >> 8; stream->ts_packetbuf[curstream][pos + 5] = (len - 6 - 14) & 0xFF;
-
- // Add any stuffing bytes to header extra len
- int hdrsize = 9 + stream->ts_packetbuf[curstream][pos + 8];
- stream->ts_packetbuf[curstream][pos + 8] += stuffing; // Add stuffing to header bytes
-
- // Write out id, streamid, len
- if (fwrite64(stream->ts_packetbuf[curstream] + pos, hdrsize, 1, stream) != 1) // Write pes id, streamid, and len
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
-
- // Write stuffing
- int i=0;
- for (i = 0; i < stuffing; i++) // Write any stuffing bytes
- {
- unsigned char stuff = 0xff;
- if (fwrite64(&stuff, 1, 1, stream) != 1)
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
- }
+ buf[9] = 0x01; // SCR extension
- // Write ac3 streamid
- if (ac3len != 0)
- {
- if (fwrite64(ac3_substream_id, ac3len, 1, stream) != 1)
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
- }
+ buf[10] = 384000 >> (22 - 8); // program mux rate
+ buf[11] = (uint8_t)( 384000 >> (22 - 16) );
+ buf[12] = (uint8_t)( 384000 << 2 ) | 0x03;
- // Write rest of data len minus headersize (9) stuffing, and pack size (14)
- if (fwrite64(stream->ts_packetbuf[curstream] + pos + hdrsize, len - hdrsize - 14 - stuffing - ac3len, 1, stream) != 1) // Write data bytes
- {
- hb_log("write_output_stream - Failed to write output file!");
- return 1;
- }
- written += len;
+ buf[13] = 0xf8 | stuffing;
- // Add len minus stuff we added like the pack (14) and the stuffing.
- pos += len - 14 - stuffing - ac3len;
- if (pos == stream->ts_packetpos[curstream])
- break;
+ int i;
+ for (i = 0; i < stuffing; ++i )
+ buf[14+i] = 0xff;
- // Add pes header for next packet
- pos -= 9;
-// make_pes_header(stream->ts_packetbuf[curstream] + pos, (pid == stream->ts_video_pids[0] ? stream->ts_streamid[kVideoStream] : stream->ts_streamid[kAudioStream]), 0, -1, -1);
- make_pes_header(stream->ts_packetbuf[curstream] + pos, stream->ts_streamid[curstream], 0, -1, -1);
- }
+ fwrite64(stream, buf, 14 + stuffing );
+}
- // Write padding
- if ((written % HB_DVD_READ_BUFFER_SIZE) != 0)
- {
- int left = HB_DVD_READ_BUFFER_SIZE - (written % HB_DVD_READ_BUFFER_SIZE);
+static void pad_buffer(hb_stream_t* stream, int pad)
+{
+ pad -= 6;
- // Pad out to HB_DVD_READ_BUFFER_SIZE bytes
- if (!pad_buffer(stream, left))
- {
- hb_log("write_output_stream - Couldn't write pad buffer!");
- return 1;
- }
- }
+ uint8_t buf[6];
+ buf[0] = 0;
+ buf[1] = 0;
+ buf[2] = 0;
+ buf[3] = 0xbe;
+ buf[4] = pad >> 8;
+ buf[5] = pad;
- stream->ts_packetpos[curstream] = 0;
- stream->ts_streamcont[curstream] = -1;
+ fwrite64(stream, buf, 6);
- return 0;
+ buf[0] = 0xff;
+ while ( --pad >= 0 )
+ {
+ fwrite64(stream, buf, 1);
+ }
}
-static void hb_ts_handle_mpeg_audio(hb_stream_t *stream, int curstream, unsigned char* buf, int adapt_len )
+static void make_pes_header(hb_stream_t* stream, int len, uint8_t streamid)
{
- // Although we don't have AC3/A52 audio here we can still use the same structure to record this useful information.
-
- stream->a52_info[curstream - stream->ts_number_video_pids].flags = A52_STEREO;
- stream->a52_info[curstream - stream->ts_number_video_pids].rate = 48000 /*Hz*/;
- stream->a52_info[curstream - stream->ts_number_video_pids].bitrate = 384000 /*Bps*/;
+ uint8_t buf[9];
+
+ memset(buf, 0, sizeof(buf) );
+ buf[2] = 1;
+ buf[3] = streamid;
+ buf[4] = ( len + 3 ) >> 8;
+ buf[5] = len + 3;
+ buf[6] = 0x88;
+
+ fwrite64(stream, buf, 9);
}
-static int hb_ts_handle_ac3_audio(hb_stream_t *stream, int curstream, unsigned char* buf, int adapt_len )
+static void generate_output_data(hb_stream_t *stream, int curstream)
{
- int spos, dpos;
+ uint8_t *tdat = stream->ts_buf[curstream];
+ int len;
- // Make sure we start with 0x0b77
- if (stream->ts_packetbuf[curstream][9 + stream->ts_packetbuf[curstream][8]] != 0x0b || stream->ts_packetbuf[curstream][9 + stream->ts_packetbuf[curstream][8] + 1] != 0x77)
- {
- spos = 9 + stream->ts_packetbuf[curstream][8];
- dpos = 9 + stream->ts_packetbuf[curstream][8];
- while (spos <= stream->ts_packetpos[curstream] - 2 && !(stream->ts_packetbuf[curstream][spos] == 0x0b && stream->ts_packetbuf[curstream][spos + 1] == 0x77))
- spos++;
+ // we always ship a PACK header plus all the data in our demux buf.
+ // AC3 audio also always needs it substream header.
+ len = 14 + stream->ts_pos[curstream];
+ if ( stream->ts_audio_stream_type[curstream] == 0x81)
+ {
+ len += 4;
+ }
- if (!(stream->ts_packetbuf[curstream][spos] == 0x0b && stream->ts_packetbuf[curstream][spos + 1] == 0x77))
- {
- hb_log("hb_ts_stream_decode - Couldn't sync AC3 packet!");
- stream->ts_skipbad[curstream] = 1;
- return 0;
- }
+ if ( ! stream->ts_start[curstream] )
+ {
+ // we're in the middle of a chunk of PES data - we need to add
+ // a 'continuation' PES header after the PACK header.
+ len += 9;
+ }
- while (spos < stream->ts_packetpos[curstream])
- {
- stream->ts_packetbuf[curstream][dpos] = stream->ts_packetbuf[curstream][spos];
- spos++;
- dpos++;
- }
- stream->ts_packetpos[curstream] = dpos;
- }
+ // Write out pack header
+ // If we don't have 2048 bytes we need to pad to 2048. We can
+ // add a padding frame after our data but we need at least 7
+ // bytes of space to do it (6 bytes of header & 1 of pad). If
+ // we have fewer than 7 bytes left we need to fill the excess
+ // space with stuffing bytes added to the pack header.
+ int stuffing = 0;
+ if ( len > HB_DVD_READ_BUFFER_SIZE )
+ {
+ hb_log( "stream ts length botch %d", len );
+ }
+ if ( HB_DVD_READ_BUFFER_SIZE - len < 8)
+ {
+ stuffing = HB_DVD_READ_BUFFER_SIZE - len;
+ }
+ write_pack(stream, stream->ts_nextpcr, stuffing );
+ stream->ts_nextpcr += 10;
- // Check the next packet to make sure IT starts with a 0x0b77
- int plen = 0;
-// if (buf[4 + adapt_len] == 0 && buf[4 + adapt_len + 1] == 0 && // Starting with an mpeg header?
-// buf[4 + adapt_len + 2] == 1 && buf[4 + adapt_len + 3] == 0xBD)
- plen = 9 + buf[4 + adapt_len + 8];
- int pstart = 4 + adapt_len + plen;
- if (buf[pstart] != 0x0b || buf[pstart + 1] != 0x77)
- {
- spos = pstart;
- while (spos < 188 - 2 && !(buf[spos] == 0x0b && buf[spos + 1] == 0x77))
- {
- stream->ts_packetbuf[curstream][stream->ts_packetpos[curstream]] = buf[spos];
- stream->ts_packetpos[curstream]++;
- spos++;
- }
+ if ( stream->ts_start[curstream] )
+ {
+ // Start frames already have a PES header but we have modify it
+ // to map from TS PID to PS stream id. Also, if the stream is AC3
+ // audio we have to insert an AC3 stream header between the end of
+ // the PES header and the start of the stream data.
- if (!(buf[spos] == 0x0b && buf[spos + 1] == 0x77))
- {
- hb_log("hb_ts_stream_decode - Couldn't sync AC3 packet!");
- stream->ts_skipbad[curstream] = 1;
- return 0;
- }
+ stream->ts_start[curstream] = 0;
+ tdat[3] = stream->ts_streamid[curstream];
- adapt_len = spos - 4 - plen;
+ uint16_t plen = stream->ts_pos[curstream] - 6;
+ if ( stream->ts_audio_stream_type[curstream] == 0x81)
+ {
+ // We have to add an AC3 header in front of the data. Add its
+ // size to the PES packet length.
+ plen += 4;
+ tdat[4] = plen >> 8;
+ tdat[5] = plen;
+
+ // Write out the PES header
+ int hdrsize = 9 + tdat[8];
+ fwrite64(stream, tdat, hdrsize);
+
+ // add a four byte DVD ac3 stream header
+ uint8_t ac3_substream_id[4];
+ int ssid = (curstream - stream->ts_number_video_pids) & 0xf;
+ ac3_substream_id[0] = 0x80 | ssid; // substream id
+ ac3_substream_id[1] = 0x01; // number of sync words
+ ac3_substream_id[2] = 0x00; // first offset (16 bits)
+ ac3_substream_id[3] = 0x02;
+ fwrite64(stream, ac3_substream_id, 4);
+
+ // add the rest of the data
+ fwrite64(stream, tdat + hdrsize, stream->ts_pos[curstream] - hdrsize);
+ }
+ else
+ {
+ // not audio - don't need to modify the stream so write what we've got
+ tdat[4] = plen >> 8;
+ tdat[5] = plen;
+ fwrite64( stream, tdat, stream->ts_pos[curstream] );
+ }
+ }
+ else
+ {
+ // data without a PES start header needs a simple 'continuation'
+ // PES header. AC3 audio also needs its substream header.
+ if ( stream->ts_audio_stream_type[curstream] != 0x81)
+ {
+ make_pes_header(stream, stream->ts_pos[curstream],
+ stream->ts_streamid[curstream]);
+ }
+ else
+ {
+ make_pes_header(stream, stream->ts_pos[curstream] + 4,
+ stream->ts_streamid[curstream]);
+
+ // add a four byte DVD ac3 stream header
+ uint8_t ac3_substream_id[4];
+ int ssid = (curstream - stream->ts_number_video_pids) & 0xf;
+ ac3_substream_id[0] = 0x80 | ssid; // substream id
+ ac3_substream_id[1] = 0x01; // number of sync words
+ ac3_substream_id[2] = 0x00; // first offset (16 bits)
+ ac3_substream_id[3] = 0x02;
+ fwrite64(stream, ac3_substream_id, 4);
+ }
+ fwrite64( stream, tdat, stream->ts_pos[curstream] );
+ }
- dpos = spos - 1;
- spos = pstart - 1;
- while (spos >= pstart - plen)
- {
- buf[dpos] = buf[spos];
- spos--;
- dpos--;
- }
- }
+ // Write padding
+ int left = HB_DVD_READ_BUFFER_SIZE - len;
+ if ( left >= 8 )
+ {
+ pad_buffer(stream, left);
+ }
- int flags, rate, bitrate;
- if( a52_syncinfo( &buf[pstart], &flags, &rate, &bitrate ) )
- {
- stream->a52_info[curstream - stream->ts_number_video_pids].flags = flags;
- stream->a52_info[curstream - stream->ts_number_video_pids].rate = rate;
- stream->a52_info[curstream - stream->ts_number_video_pids].bitrate = bitrate;
- }
- return 1;
+ stream->ts_pos[curstream] = 0;
}
-static void hb_ts_stream_find_pids(hb_stream_t *stream)
+static void ts_warn_helper( hb_stream_t *stream, char *log, va_list args )
{
- unsigned char buf[188];
- int curstream = 0;
-
- // Stream ID info
- unsigned int program_num = 0;
- unsigned int network_PID = 0;
- unsigned int program_map_PID = 0;
-
- // align to first packet
- align_to_next_packet(stream->file_handle);
-
- // Read the Transport Stream Packets (188 bytes each) looking at first for PID 0 (the PAT PID), then decode that
- // to find the program map PID and then decode that to get the list of audio and video PIDs
-
- int bytesReadInPacket = 0;
- for (;;)
- {
- // Try to read packet..
- int bytesRead;
- if ((bytesRead = fread(buf+bytesReadInPacket, 1, 188-bytesReadInPacket, stream->file_handle)) != 188-bytesReadInPacket)
- {
- if (bytesRead < 0)
- bytesRead = 0;
- bytesReadInPacket += bytesRead;
-
- hb_log("hb_ts_stream_find_pids - end of file");
- break;
- }
- else
- {
-// curfilepos += bytesRead;
- bytesReadInPacket = 0;
- }
+ // limit error printing to at most one per minute of video (at 30fps)
+ ++stream->errors;
+ if ( stream->frames - stream->last_error_frame >= 30*60 )
+ {
+ char msg[256];
- // Check sync byte
- if ((buf[0] != 0x47) && (buf[0] != 0x72) && (buf[0] != 0x29))
- {
-// __int64 pos = ftell64(fin);
- hb_log("hb_ts_stream_find_pids - Bad transport packet (no sync byte 0x47)!");
- int i = 0;
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- stream->ts_skipbad[i] = 1;
-// stream->ts_skipbad[kAudioStream] = stream->ts_skipbad[kVideoStream] = 1;
- continue;
- }
+ vsnprintf( msg, sizeof(msg), log, args );
- // Get pid
- int pid = (((buf[1] & 0x1F) << 8) | buf[2]) & 0x1FFF;
-
- if ((pid == 0x0000) && (program_num == 0))
- {
- decode_PAT(buf, &program_num, &network_PID, &program_map_PID);
- continue;
- }
-
- if (pid == 0x1ffb)
- {
- printf("Need to decode PSIP data !\n");
- continue;
- }
-
- if ((network_PID > 0) && (pid == network_PID))
- {
- printf("Need to Decode network PID section !\n");
- continue;
- }
-
- if ((program_map_PID > 0) && (pid == program_map_PID))
- {
- decode_program_map(buf, stream);
- break;;
- }
-
- // Skip until we have a complete set of PIDs
- if ((stream->ts_number_video_pids == 0) || (stream->ts_number_audio_pids == 0))
- continue;
- }
-
- hb_log("hb_ts_stream_find_pids - found the following PIDS");
- hb_log(" Video PIDS : ");
- int i=0;
- for (i=0; i < stream->ts_number_video_pids; i++)
- {
- hb_log(" 0x%x (%d)", stream->ts_video_pids[i], stream->ts_video_pids[i]);
- }
- hb_log(" Audio PIDS : ");
- for (i = 0; i < stream->ts_number_audio_pids; i++)
- {
- hb_log(" 0x%x (%d)", stream->ts_audio_pids[i], stream->ts_audio_pids[i]);
- }
- }
+ if ( stream->errors - stream->last_error_count < 10 )
+ {
+ hb_log( "stream: error near frame %d: %s", stream->frames, msg );
+ }
+ else
+ {
+ int Edelta = stream->errors - stream->last_error_count;
+ double Epcnt = (double)Edelta * 100. /
+ (stream->frames - stream->last_error_frame);
+ hb_log( "stream: %d new errors (%.0f%%) up to frame %d: %s",
+ Edelta, Epcnt, stream->frames, msg );
+ }
+ stream->last_error_frame = stream->frames;
+ stream->last_error_count = stream->errors;
+ }
+}
-int index_of_video_pid(int pid, hb_stream_t *stream)
+static void ts_warn( hb_stream_t *stream, char *log, ... )
{
- int found_pid = -1, i = 0;
-
- for (i = 0; (i < stream->ts_number_video_pids) && (found_pid < 0); i++)
- {
- if (pid == stream->ts_video_pids[i])
- found_pid = i;
- }
- return found_pid;
+ va_list args;
+ va_start( args, log );
+ ts_warn_helper( stream, log, args );
+ va_end( args );
}
-int index_of_audio_pid(int pid, hb_stream_t *stream)
+static void ts_err( hb_stream_t *stream, int curstream, char *log, ... )
{
- int i = 0, found_pid = -1;
-
- // If a selected audio pid index has been set it indicates
- // which of the potential pids we need to output so only return
- // that index for the appropriate pid. Other pids should just
- // be ignored.
- if (stream->ts_selected_audio_pid_index >= 0)
- {
- if (pid == stream->ts_audio_pids[stream->ts_selected_audio_pid_index])
- return stream->ts_selected_audio_pid_index;
- else
- return -1;
- }
-
- // If no specific pid index is set then we're probably just gathering
- // pid and/or stream information (during DecodePreviews for example)
- // so return the appropriate index
- for (i = 0; (i < stream->ts_number_audio_pids) && (found_pid < 0); i++)
- {
- if (pid == stream->ts_audio_pids[i])
- found_pid = i;
- }
- return found_pid;
+ va_list args;
+ va_start( args, log );
+ ts_warn_helper( stream, log, args );
+ va_end( args );
+
+ stream->ts_skipbad[curstream] = 1;
+ stream->ts_pos[curstream] = 0;
+ stream->ts_streamcont[curstream] = -1;
}
-int index_of_pid(int pid, hb_stream_t *stream)
+static int isIframe( const uint8_t *buf, int adapt_len )
{
- int found_pid = -1;
-
- if ((found_pid = index_of_video_pid(pid, stream)) >= 0)
- return found_pid;
-
- if ((found_pid = index_of_audio_pid(pid, stream)) >= 0)
- return found_pid;
-
- return found_pid;
+ // Look for the Group of Pictures packet
+ int i;
+ uint32_t strid = 0;
+
+ for (i = 4 + adapt_len; i < 188; i++)
+ {
+ strid = (strid << 8) | buf[i];
+ switch ( strid )
+ {
+ case 0x000001B8: // group_start_code (GOP header)
+ case 0x000001B3: // sequence_header code
+ return 1;
+
+ case 0x00000100: // picture_start_code
+ // picture_header, let's see if it's an I-frame
+ if (i<185)
+ {
+ // check if picture_coding_type == 1
+ if ((buf[i+2] & (0x7 << 3)) == (1 << 3))
+ {
+ // found an I-frame picture
+ return 1;
+ }
+ }
+ break;
+ }
+ }
+ // didn't find an I frame
+ return 0;
}
/***********************************************************************
***********************************************************************
*
**********************************************************************/
-static void hb_ts_stream_decode(hb_stream_t *stream)
+static int hb_ts_stream_decode( hb_stream_t *stream, uint8_t *obuf )
{
- unsigned char buf[188];
+ int64_t pcr = stream->ts_lastpcr;
int curstream;
- int doing_iframe;
-
- int i = 0;
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
-// stream->ts_skipbad[kAudioStream] = stream->ts_skipbad[kVideoStream] = 0;
- stream->ts_skipbad[i] = 0;
- }
-
- doing_iframe = 0;
-
- if ((stream->ts_number_video_pids == 0) || (stream->ts_number_audio_pids == 0))
- {
- hb_log("hb_ts_stream_decode - no Video or Audio PID selected, cannot decode transport stream");
- return;
- }
-
- int bytesReadInPacket = 0;
- int curr_write_buffer_index = stream->ps_current_write_buffer_index;
-
- // Write output data until a buffer switch occurs.
- while (curr_write_buffer_index == stream->ps_current_write_buffer_index)
- {
- // Try to read packet..
- int bytesRead;
- if ((bytesRead = fread(buf+bytesReadInPacket, 1, 188-bytesReadInPacket, stream->file_handle)) != 188-bytesReadInPacket)
- {
- if (bytesRead < 0)
- bytesRead = 0;
- bytesReadInPacket += bytesRead;
+ uint8_t buf[188];
- // Flush any outstanding output data - we're done here.
- flushbuf(stream);
- break;
- }
- else
+ /*
+ * stash the output buffer pointer in our stream so we don't have to
+ * pass it & its original value to everything we call.
+ */
+ stream->fwrite_buf = obuf;
+ stream->fwrite_buf_orig = obuf;
+
+ // spin until we get a packet of data from some stream or hit eof
+ while ( 1 )
+ {
+ if ((fread(buf, 188, 1, stream->file_handle)) != 1)
{
-// curfilepos += bytesRead;
- bytesReadInPacket = 0;
+ // end of file - we didn't finish filling our ps write buffer
+ // so just discard the remainder (the partial buffer is useless)
+ hb_log("hb_ts_stream_decode - eof");
+ return 0;
}
+ /* This next section validates the packet */
+
// Check sync byte
if ((buf[0] != 0x47) && (buf[0] != 0x72) && (buf[0] != 0x29))
{
-// __int64 pos = ftell64(fin);
- hb_log("hb_ts_stream_decode - Bad transport packet (no sync byte 0x47)!");
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- // stream->ts_skipbad[kAudioStream] = stream->ts_skipbad[kVideoStream] = 1;
- stream->ts_skipbad[i] = 1;
- }
+ // lost sync - back up to where we started then try to
+ // re-establish sync.
+ off_t pos = ftello(stream->file_handle) - 188;
+ off_t pos2 = align_to_next_packet(stream->file_handle);
+ if ( pos2 == 0 )
+ {
+ hb_log( "hb_ts_stream_decode: eof while re-establishing sync @ %lld",
+ pos );
+ return 0;
+ }
+ ts_warn( stream, "hb_ts_stream_decode: sync lost @%lld, "
+ "regained after %lld bytes", pos, pos2 );
continue;
}
- // Get pid
- int pid = (((buf[1] & 0x1F) << 8) | buf[2]) & 0x1FFF;
-
- // Skip this block
- if (index_of_pid(pid, stream) < 0)
- continue;
-// if (pid != stream->ts_audio_pids[0] && pid != stream->ts_video_pids[0])
-// continue;
-
- // Get the pos and buf - we organize our streams as 'n' video streams then 'm' audio streams
- int index_of_selected_pid = -1;
- if ((index_of_selected_pid = index_of_video_pid(pid,stream)) < 0)
- {
- // Not a video PID perhaps audio ?
- if ((index_of_selected_pid = index_of_audio_pid(pid,stream)) < 0)
- {
- hb_log("hb_ts_stream_decode - Unknown pid 0x%x (%d)", pid, pid);
- continue;
- }
- else
- {
- curstream = stream->ts_number_video_pids + index_of_selected_pid;
- if (curstream > kMaxNumberDecodeStreams)
- {
- hb_log("hb_ts_stream_decode - Too many streams %d", curstream);
- continue;
- }
- }
- }
- else
- curstream = index_of_selected_pid;
-
-// if (pid == stream->ts_video_pids[0])
-// curstream = 0;
-// else
-// curstream = 1;
-
- // Get start code
- int start;
- start = (buf[1] & 0x40) != 0;
-
- if (!start && stream->ts_skipbad[curstream])
- continue;
+ // Get pid and use it to find stream state.
+ int pid = ((buf[1] & 0x1F) << 8) | buf[2];
+ if ( ( curstream = index_of_pid( pid, stream ) ) < 0 )
+ continue;
// Get error
int errorbit = (buf[1] & 0x80) != 0;
if (errorbit)
{
- hb_log("hb_ts_stream_decode - Error bit set in packet");
- stream->ts_skipbad[curstream] = 1;
+ ts_err( stream, curstream, "packet error bit set");
continue;
}
// Get adaption header info
int adaption = (buf[3] & 0x30) >> 4;
int adapt_len = 0;
-
- // Get continuity
- int continuity = (buf[3] & 0xF);
- if ((stream->ts_streamcont[curstream] != -1) && (adaption & 0x01 == 0x01)) // Continuity only increments for adaption values of 0x3 or 0x01
- {
- if (continuity != ((stream->ts_streamcont[curstream] + 1) & 0xF))
- {
- hb_log("hb_ts_stream_decode - Bad continuity code in packet");
- stream->ts_skipbad[curstream] = 1;
- continue;
- }
- stream->ts_streamcont[curstream] = continuity;
- }
-
- // Get adaption header size
if (adaption == 0)
{
- hb_log("hb_ts_stream_decode - Bad adaption code (code was 0)!");
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- stream->ts_skipbad[i] = 1;
- }
- // stream->ts_skipbad[kAudioStream] = stream->ts_skipbad[kVideoStream] = 1;
+ ts_err( stream, curstream, "adaptation code 0");
continue;
}
else if (adaption == 0x2)
adapt_len = buf[4] + 1;
if (adapt_len > 184)
{
- hb_log("hb_ts_stream_decode - Invalid adapt len (was > 183)!");
- for (i=0; i < stream->ts_number_video_pids + stream->ts_number_audio_pids; i++)
- {
- stream->ts_skipbad[i] = 1;
- }
-// stream->ts_skipbad[kAudioStream] = stream->ts_skipbad[kVideoStream] = 1;
+ ts_err( stream, curstream, "invalid adapt len %d", adapt_len);
+ continue;
}
}
- // HBO is slick, it doesn't bother to sync AC3 packets with PES elementary stream packets.. so
- // we have to swizzle them together! (ARGHH!)
-// if (pid == stream->ts_audio_pids[0] && start)
- if ((index_of_audio_pid(pid, stream) >= 0) && start)
- {
- // Is there an AC3 packet start 0b77 code in this packet??
- int sync_found = 0;
- unsigned char *p = buf + 4 + adapt_len;
- while (p <= buf + 186)
- {
- if (p[0] == 0x0b && p[1] == 0x77)
- {
- sync_found = 1;
- break;
- }
- p++;
- }
-
- // Couldn't find an AC3 sync start in this packet.. don't make a PES packet!
- if (!sync_found)
- {
-// int pos = ftell(fin);
-// error("AC3 packet sync not found in start frame");
-// return 1;
- adapt_len += 9 + buf[4 + adapt_len + 8];
- start = 0;
- }
- }
+ // if there's an adaptation header & PCR_flag is set
+ // get the PCR (Program Clock Reference)
+ if ( adapt_len > 7 && ( buf[5] & 0x10 ) != 0 )
+ {
+ pcr = ( (uint64_t)buf[6] << (33 - 8) ) |
+ ( (uint64_t)buf[7] << (33 - 16) ) |
+ ( (uint64_t)buf[8] << (33 - 24) ) |
+ ( (uint64_t)buf[9] << (33 - 32) ) |
+ ( buf[10] >> 7 );
+ stream->ts_nextpcr = pcr;
+
+ // remember the pcr across calls to this routine
+ stream->ts_lastpcr = pcr;
+ }
- // Get PCR
- if (start && (adaption & 0x2) && (buf[5] & 0x10))
+ if ( pcr == -1 )
{
- int64_t PCR_base = ((int64_t)buf[6] << 25) | ((int64_t)buf[7] << 17) |
- ((int64_t)buf[8] << 9) | ((int64_t)buf[9] << 1) | ((int64_t)buf[10] >> 7);
- int64_t PCR_ext = ((int64_t)(buf[10] & 0x1) << 8) | ((int64_t)buf[11]);
- int64_t PCR = PCR_base * 300 + PCR_ext;
+ // don't accumulate data until we get a pcr
+ continue;
}
- // Get random
-// bool random = false;
-// if (start && (adaption & 0x2))
-// random = (buf[5] & 0x40) != 0; // BUG: SOME TS STREAMS DON'T HAVE THE RANDOM BIT (ABC!! ALIAS)
+ // Get continuity
+ // Continuity only increments for adaption values of 0x3 or 0x01
+ // and is not checked for start packets.
- // Found a random access point (now we can start a frame/audio packet..)
- if (start)
+ int start = (buf[1] & 0x40) != 0;
+
+ if ( (adaption & 0x01) != 0 )
{
- // Check to see if this is an i_frame (group of picture start)
- if (pid == stream->ts_video_pids[0])
- {
-// printf("Found Video Start for pid 0x%x\n", pid);
- // Look for the Group of Pictures packet.. indicates this is an I-Frame packet..
- doing_iframe = 0;
- unsigned int strid = 0;
- int i = 4;
- for (i = 4 + adapt_len; i < 188; i++)
- {
- strid = (strid << 8) | buf[i];
- if (strid == 0x000001B8) // group_start_code
- {
- // found a Group of Pictures header, subsequent picture must be an I-frame
- doing_iframe = 1;
- }
- else if (strid == 0x000001B3) // sequence_header code
- {
- doing_iframe = 1;
- }
- else if (strid == 0x00000100) // picture_start_code
- {
- // picture_header, let's see if it's an I-frame
- if (i<187)
- {
-// int pic_start_code = (buf[i+2] >> 3) & 0x07;
-// hb_log("hb_ts_stream_decode - picture_start_code header value = 0x%x (%d)", pic_start_code, pic_start_code);
- // check if picture_coding_type == 1
- if ((buf[i+2] & (0x7 << 3)) == (1 << 3))
- {
- // found an I-frame picture
- doing_iframe = 1;
- }
- }
- }
-
- if (doing_iframe)
- {
- if (!stream->ts_foundfirst[curstream])
- {
- stream->ts_foundfirst[curstream] = 1;
-// first_video_PCR = PCR;
- }
- break;
- }
- }
- }
- else if (index_of_audio_pid(pid, stream) >= 0)
+ int continuity = (buf[3] & 0xF);
+ if ( continuity == stream->ts_streamcont[curstream] )
+ {
+ // we got a duplicate packet (usually used to introduce
+ // a PCR when one is needed). The only thing that can
+ // change in the dup is the PCR which we grabbed above
+ // so ignore the rest.
+ continue;
+ }
+ if ( !start && (stream->ts_streamcont[curstream] != -1) &&
+ (continuity != ( (stream->ts_streamcont[curstream] + 1) & 0xf ) ) )
{
- if (stream->ts_foundfirst[0]) // Set audio found first ONLY after first video frame found. There's an assumption here that stream '0' is a video stream
- {
- stream->ts_foundfirst[curstream] |= 1;
- }
+ ts_err( stream, curstream, "continuity error: got %d expected %d",
+ (int)continuity,
+ (stream->ts_streamcont[curstream] + 1) & 0xf );
+ stream->ts_streamcont[curstream] = continuity;
+ continue;
}
-
+ stream->ts_streamcont[curstream] = continuity;
+ }
+
+ /* If we get here the packet is valid - process its data */
+
+ if ( start )
+ {
+ // Found a random access point (now we can start a frame/audio packet..)
+
// If we were skipping a bad packet, start fresh on this new PES packet..
if (stream->ts_skipbad[curstream] == 1)
{
+ // video skips to an iframe after a bad packet to minimize
+ // screen corruption
+ if ( curstream == 0 && !isIframe( buf, adapt_len ) )
+ {
+ continue;
+ }
stream->ts_skipbad[curstream] = 0;
- stream->ts_packetpos[curstream] = 0;
}
- // Get the continuity code of this packet
- stream->ts_streamcont[curstream] = continuity;
- }
-
- // Write a 2048 byte program stream packet..
- if (start && stream->ts_packetpos[curstream] > 0 && stream->ts_foundfirst[curstream] && !stream->ts_skipbad[curstream])
- {
- // Save the substream id block so we can added it to subsequent blocks
- int write_ac3 = 0;
-// if (pid == stream->ts_audio_pids[0] /*&& audstreamid == 0xBD*/)
- if (index_of_audio_pid(pid, stream) >= 0)
- {
- if ((stream->ts_audio_stream_type[curstream] == 0x04) || (stream->ts_audio_stream_type[curstream] == 0x81))
- {
- write_ac3 = hb_ts_handle_ac3_audio(stream, curstream, buf, adapt_len);
- }
- else if (stream->ts_audio_stream_type[curstream] == 0x03)
- {
- hb_ts_handle_mpeg_audio(stream, curstream, buf, adapt_len);
- }
- else
- {
- hb_log("hb_ts_stream_decode - Unknown Audio Stream type ! 0x%x (%d)", stream->ts_audio_stream_type[curstream], stream->ts_audio_stream_type[curstream]);
- }
+ // If we don't have video yet, check to see if this is an
+ // i_frame (group of picture start)
+ if ( curstream == 0 )
+ {
+ if ( !stream->ts_foundfirst[0] )
+ {
+ if ( !isIframe( buf, adapt_len ) )
+ {
+ // didn't find an I frame
+ continue;
+ }
+ stream->ts_foundfirst[0] = 1;
+ }
+ ++stream->frames;
+ }
+ else if ( ! stream->ts_foundfirst[curstream] )
+ {
+ // start other streams only after first video frame found.
+ if ( ! stream->ts_foundfirst[0] )
+ {
+ continue;
+ }
+ stream->ts_foundfirst[curstream] = 1;
}
-
- if (generate_output_data(stream, write_ac3, curstream, pid) != 0)
- return ;
- }
+
+ // If we have some data already on this stream, turn it into
+ // a program stream packet. Then add the payload for this
+ // packet to the current pid's buffer.
+ if ( stream->ts_pos[curstream] )
+ {
+ generate_output_data(stream, curstream);
+ stream->ts_start[curstream] = 1;
+ memcpy(stream->ts_buf[curstream],
+ buf + 4 + adapt_len, 184 - adapt_len);
+ stream->ts_pos[curstream] = 184 - adapt_len;
+ return 1;
+ }
+ stream->ts_start[curstream] = 1;
+ }
// Add the payload for this packet to the current buffer
- if (stream->ts_foundfirst[curstream] && (184 - adapt_len) > 0)
+ if (!stream->ts_skipbad[curstream] && stream->ts_foundfirst[curstream] &&
+ (184 - adapt_len) > 0)
{
- memcpy(stream->ts_packetbuf[curstream] + stream->ts_packetpos[curstream], buf + 4 + adapt_len, 184 - adapt_len);
- stream->ts_packetpos[curstream] += 184 - adapt_len;
+ memcpy(stream->ts_buf[curstream] + stream->ts_pos[curstream],
+ buf + 4 + adapt_len, 184 - adapt_len);
+ stream->ts_pos[curstream] += 184 - adapt_len;
+
+ // if the next TS packet could possibly overflow our 2K output buffer
+ // we need to generate a packet now. Overflow would be 184 bytes of
+ // data + the 9 byte PES hdr + the 14 byte PACK hdr = 211 bytes.
+ if ( stream->ts_pos[curstream] >= (HB_DVD_READ_BUFFER_SIZE - 216) )
+ {
+ // we have enough data to make a PS packet
+ generate_output_data(stream, curstream);
+ return 1;
+ }
}
}
}
**********************************************************************/
static void hb_ts_stream_reset(hb_stream_t *stream)
{
- int i=0;
- for (i=0; i < kNumDecodeBuffers; i++)
- {
- stream->ps_decode_buffer[i].read_pos = 0;
- stream->ps_decode_buffer[i].write_pos = 0;
- stream->ps_decode_buffer[i].len = 0;
- }
+ int i;
for (i=0; i < kMaxNumberDecodeStreams; i++)
{
+ stream->ts_pos[i] = 0;
+ stream->ts_foundfirst[i] = 0;
+ stream->ts_skipbad[i] = 0;
stream->ts_streamcont[i] = -1;
+ stream->ts_start[i] = 0;
}
- stream->ps_current_write_buffer_index = 0;
- stream->ps_current_read_buffer_index = 1;
+ stream->ts_lastpcr = -1;
+ stream->ts_nextpcr = -1;
+
+ stream->frames = 0;
+ stream->errors = 0;
+ stream->last_error_frame = -10000;
+ stream->last_error_count = 0;
align_to_next_packet(stream->file_handle);
}
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