} hb_stream_type_t;
#define kMaxNumberVideoPIDS 1
-#define kMaxNumberAudioPIDS 15
+#define kMaxNumberAudioPIDS 31
#define kMaxNumberDecodeStreams (kMaxNumberVideoPIDS+kMaxNumberAudioPIDS)
#define kMaxNumberPMTStreams 32
int ts_pos[kMaxNumberDecodeStreams];
int8_t ts_skipbad[kMaxNumberDecodeStreams];
int8_t ts_streamcont[kMaxNumberDecodeStreams];
+ uint8_t ts_pkt_summary[kMaxNumberDecodeStreams][8];
hb_buffer_t *fwrite_buf; /* PS buffer (set by hb_ts_stream_decode) */
int chapter; /* Chapter that we are currently in */
- uint64_t chapter_end; /* HB time that the current chapter ends */
+ int64_t chapter_end; /* HB time that the current chapter ends */
/*
* Stuff before this point is dynamic state updated as we read the
}
}
+static void ts_warn( hb_stream_t*, char*, ... ) HB_WPRINTF(2,3);
+static void ts_err( hb_stream_t*, int, char*, ... ) HB_WPRINTF(3,4);
+
static void ts_warn( hb_stream_t *stream, char *log, ... )
{
- va_list args;
+ va_list args;
va_start( args, log );
ts_warn_helper( stream, log, args );
va_end( args );
static void ts_err( hb_stream_t *stream, int curstream, char *log, ... )
{
- va_list args;
+ va_list args;
va_start( args, log );
ts_warn_helper( stream, log, args );
va_end( args );
**********************************************************************/
hb_stream_t * hb_stream_open( char *path, hb_title_t *title )
{
- FILE *f = fopen( path, "r" );
+ FILE *f = fopen( path, "rb" );
if ( f == NULL )
{
hb_log( "hb_stream_open: open %s failed", path );
off_t pos2 = align_to_next_packet(stream);
if ( pos2 == 0 )
{
- hb_log( "next_packet: eof while re-establishing sync @ %lld", pos );
+ hb_log( "next_packet: eof while re-establishing sync @ %"PRId64, pos );
return NULL;
}
- ts_warn( stream, "next_packet: sync lost @ %lld, regained after %lld bytes",
+ ts_warn( stream, "next_packet: sync lost @ %"PRId64", regained after %"PRId64" bytes",
pos, pos2 );
}
}
buf = hb_ts_stream_getPEStype( stream, stream->ts_video_pids[0] );
if ( buf == NULL )
{
- hb_log("hb_sample_pts: couldn't find video packet near %llu", fpos);
+ hb_log("hb_sample_pts: couldn't find video packet near %"PRIu64, fpos);
return pp;
}
if ( ( buf[7] >> 7 ) != 1 )
{
- hb_log("hb_sample_pts: no PTS in video packet near %llu", fpos);
+ hb_log("hb_sample_pts: no PTS in video packet near %"PRIu64, fpos);
return pp;
}
pp.pts = ( ( (uint64_t)buf[9] >> 1 ) & 7 << 30 ) |
return hb_ts_stream_decode( src_stream, b );
}
-/***********************************************************************
- * hb_stream_seek_chapter
- ***********************************************************************
- *
- **********************************************************************/
int hb_stream_seek_chapter( hb_stream_t * stream, int chapter_num )
{
- AVFormatContext *ic = stream->ffmpeg_ic;
- uint64_t end_offset = 0;
- uint64_t start_offset = 0;
- uint64_t pos = 0;
- hb_chapter_t *chapter = NULL;
- int i;
- if( !stream || !stream->title )
- {
- return 0;
- }
if ( stream->hb_stream_type != ffmpeg )
{
// currently meaningliess for transport and program streams
return 1;
}
-
- for( i = 0; i < chapter_num; i++)
+ if ( !stream || !stream->title ||
+ chapter_num > hb_list_count( stream->title->list_chapter ) )
{
- chapter = hb_list_item( stream->title->list_chapter,
- i );
-
- if( chapter )
- {
- /*
- * Seeking to a chapter means that we are in that chapter,
- * so track which chapter we are in so that we can output
- * the correct chapter numbers in buf->new_chap
- */
- start_offset = end_offset;
- end_offset += chapter->duration;
- stream->chapter = i;
- stream->chapter_end = end_offset;
- } else {
- return 0;
- }
+ return 0;
}
- /*
- * Is the the correct way to convert timebases? It seems to get it pretty
- * much right - plus a few seconds, which is odd.
- */
- pos = ((start_offset * AV_TIME_BASE) / 90000);
+ int64_t sum_dur = 0;
+ hb_chapter_t *chapter = NULL;
+ int i;
+ for ( i = 0; i < chapter_num; ++i)
+ {
+ chapter = hb_list_item( stream->title->list_chapter, i );
+ sum_dur += chapter->duration;
+ }
+ stream->chapter = chapter_num - 1;
+ stream->chapter_end = sum_dur;
- hb_deep_log( 2, "Seeking to chapter %d time (starts: %lld ends %lld) AV pos %lld", chapter_num-1, start_offset, end_offset, pos);
+ int64_t pos = ( ( ( sum_dur - chapter->duration ) * AV_TIME_BASE ) / 90000 );
- av_seek_frame( ic, -1, pos, 0);
+ hb_deep_log( 2, "Seeking to chapter %d: starts %"PRId64", ends %"PRId64", AV pos %"PRId64,
+ chapter_num, sum_dur - chapter->duration, sum_dur, pos);
+ if ( chapter_num > 1 && pos > 0 )
+ {
+ av_seek_frame( stream->ffmpeg_ic, -1, pos, 0);
+ }
return 1;
}
switch (dp[0])
{
case 5: // Registration descriptor
- stream->ts_format_id[esindx] = (dp[2] << 24) | (dp[3] << 16) |
+ stream->ts_format_id[esindx+1] = (dp[2] << 24) | (dp[3] << 16) |
(dp[4] << 8) | dp[5];
break;
stream->a52_info[esindx].lang_code = lang_to_code(lang_for_code2((const char *)&dp[2]));
break;
+ case 0x6a: // DVB AC-3 descriptor
+ stream->ts_stream_type[esindx+1] = 0x81;
+ break;
+
default:
break;
}
if ( index_of_pid( elementary_PID, stream ) < 0 )
{
- // already have this pid - do nothing
- }
- if (stream->ts_number_video_pids == 0 && st2codec[stream_type].kind == V )
- {
- stream->ts_video_pids[0] = elementary_PID;
- stream->ts_stream_type[0] = stream_type;
- stream->ts_number_video_pids = 1;
- }
- 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)
+ // don't have this pid yet
+ if (stream->ts_number_video_pids == 0 &&
+ st2codec[stream_type].kind == V )
{
- stream->ts_audio_pids[i] = elementary_PID;
- stream->ts_stream_type[1 + i] = stream_type;
- if (ES_info_length > 0)
+ stream->ts_video_pids[0] = elementary_PID;
+ stream->ts_stream_type[0] = stream_type;
+ stream->ts_number_video_pids = 1;
+ }
+ 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)
{
- decode_element_descriptors(stream, i, ES_info_buf,
- ES_info_length);
+ stream->ts_audio_pids[i] = elementary_PID;
+ stream->ts_stream_type[1 + i] = stream_type;
+ if (ES_info_length > 0)
+ {
+ decode_element_descriptors(stream, i, ES_info_buf,
+ ES_info_length);
+ }
+ ++stream->ts_number_audio_pids;
}
- ++stream->ts_number_audio_pids;
}
}
free(ES_info_buf);
if (cur_pos >= section_length - 4 /* stop before the CRC */)
- done_reading_stream_types = 1;
+ done_reading_stream_types = 1;
}
free(descriptor_buf);
static void hb_ts_stream_find_pids(hb_stream_t *stream)
{
- // align to first packet
+ // To be different from every other broadcaster in the world, New Zealand TV
+ // changes PMTs (and thus video & audio PIDs) when 'programs' change. Since
+ // we may have the tail of the previous program at the beginning of this
+ // file, take our PMT from the middle of the file.
+ fseeko(stream->file_handle, 0, SEEK_END);
+ uint64_t fsize = ftello(stream->file_handle);
+ fseeko(stream->file_handle, fsize >> 1, SEEK_SET);
align_to_next_packet(stream);
// Read the Transport Stream Packets (188 bytes each) looking at first for PID 0 (the PAT PID), then decode that
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;
+ // Spliced transport streams can have duplicate
+ // continuity counts at the splice boundary.
+ // Test to see if the packet is really a duplicate
+ // by comparing packet summaries to see if they
+ // match.
+ uint8_t summary[8];
+
+ summary[0] = adaption;
+ summary[1] = adapt_len;
+ if (adapt_len + 4 + 6 + 9 <= 188)
+ {
+ memcpy(&summary[2], buf+4+adapt_len+9, 6);
+ }
+ else
+ {
+ memset(&summary[2], 0, 6);
+ }
+ if ( memcmp( summary, stream->ts_pkt_summary[curstream], 8 ) == 0 )
+ {
+ // 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) &&
!stream->ts_skipbad[curstream] &&
(int)continuity,
(stream->ts_streamcont[curstream] + 1) & 0xf );
stream->ts_streamcont[curstream] = continuity;
- continue;
- }
- stream->ts_streamcont[curstream] = continuity;
- }
+ continue;
+ }
+ stream->ts_streamcont[curstream] = continuity;
+
+ // Save a summary of this packet for later duplicate
+ // testing. The summary includes some header information
+ // and payload bytes. Should be enough to detect
+ // non-duplicates.
+ stream->ts_pkt_summary[curstream][0] = adaption;
+ stream->ts_pkt_summary[curstream][1] = adapt_len;
+ if (adapt_len + 4 + 6 + 9 <= 188)
+ {
+ memcpy(&stream->ts_pkt_summary[curstream][2],
+ buf+4+adapt_len+9, 6);
+ }
+ else
+ {
+ memset(&stream->ts_pkt_summary[curstream][2], 0, 6);
+ }
+ }
/* If we get here the packet is valid - process its data */
// (the original scan stream was closed and no longer exists).
static void ffmpeg_remap_stream( hb_stream_t *stream, hb_title_t *title )
{
- // tell ffmpeg we want a pts on every frame it returns
- stream->ffmpeg_ic->flags |= AVFMT_FLAG_GENPTS;
-
// all the video & audio came from the same stream so remapping
// the video's stream slot takes care of everything.
int slot = title->video_codec_param & (ffmpeg_sl_size - 1);
stream->hb_stream_type = ffmpeg;
stream->ffmpeg_pkt = malloc(sizeof(*stream->ffmpeg_pkt));
av_init_packet( stream->ffmpeg_pkt );
+ stream->chapter_end = INT64_MAX;
if ( title )
{
AVChapter *m;
uint64_t duration_sum = 0;
for( i = 0; i < ic->nb_chapters; i++ )
- if( m = ic->chapters[i] )
+ if( ( m = ic->chapters[i] ) != NULL )
{
hb_chapter_t * chapter;
chapter = calloc( sizeof( hb_chapter_t ), 1 );
chapter->minutes = ( ( chapter->duration / 90000 ) % 3600 ) / 60;
chapter->seconds = ( chapter->duration / 90000 ) % 60;
strcpy( chapter->title, m->title );
- hb_deep_log( 2, "Added chapter %i, name='%s', dur=%llu, (%02i:%02i:%02i)",
+ hb_deep_log( 2, "Added chapter %i, name='%s', dur=%"PRIu64", (%02i:%02i:%02i)",
chapter->index, chapter->title,
chapter->duration, chapter->hours,
chapter->minutes, chapter->seconds );
// we do it ourselves here. The decoder gets messed up if it
// doesn't get a SEQ header first so we consider that to be a key frame.
pkt = stream->ffmpeg_pkt->data;
- if ( pkt[0] && pkt[1] && pkt[2] == 1 && pkt[3] == 0x0f )
+ if ( !pkt[0] && !pkt[1] && pkt[2] == 1 && pkt[3] == 0x0f )
return 1;
return 0;
/*
* Check to see whether this video buffer is on a chapter
- * boundary, if so mark it as such in the buffer. The chapters for
- * a stream have a simple duration for each chapter. So we keep
- * track of what chapter we are in currently, and when it is due
- * to end.
+ * boundary, if so mark it as such in the buffer then advance
+ * chapter_end to the end of the next chapter.
+ * If there are no chapters, chapter_end is always initialized to INT64_MAX
+ * (roughly 3 million years at our 90KHz clock rate) so the test
+ * below handles both the chapters & no chapters case.
*/
- hb_deep_log( 3, "title=0x%x, job=0x%x, chapter_markers=%d, time=%lld, chapter=%d, end_chapter=%lld",
- stream->title,
- stream->title ? (stream->title->job ? stream->title->job : 0x0) : 0x0,
- stream->title ? (stream->title->job ? stream->title->job->chapter_markers : 2) : 0x0,
- buf->start, stream->chapter, stream->chapter_end);
-
- if( stream->title &&
- stream->title->job &&
- stream->title->job->chapter_markers &&
- buf->id == stream->ffmpeg_video_id &&
- buf->start >= stream->chapter_end )
+ if ( buf->id == stream->ffmpeg_video_id && buf->start >= stream->chapter_end )
{
- hb_chapter_t *chapter = NULL;
-
- /*
- * Store when this chapter ends using HB time.
- */
- chapter = hb_list_item( stream->title->list_chapter,
- stream->chapter );
-
+ hb_chapter_t *chapter = hb_list_item( stream->title->list_chapter,
+ stream->chapter+1 );
if( chapter )
{
- buf->new_chap = stream->chapter + 2;
-
- hb_deep_log( 2, "Starting chapter %i at %lld", buf->new_chap, buf->start);
- hb_chapter_t *nextChapter = NULL;
- nextChapter = hb_list_item( stream->title->list_chapter,
- stream->chapter + 1 );
- if( nextChapter )
- stream->chapter_end += nextChapter->duration;
stream->chapter++;
- hb_deep_log( 2, "Looking for chapter %i at %lld", stream->chapter + 2, stream->chapter_end );
+ stream->chapter_end += chapter->duration;
+ buf->new_chap = stream->chapter + 1;
+ hb_deep_log( 2, "ffmpeg_read starting chapter %i at %"PRId64,
+ buf->new_chap, buf->start);
} else {
- /*
- * Must have run out of chapters, stop looking.
- */
- stream->chapter_end = -1;
+ // Must have run out of chapters, stop looking.
+ stream->chapter_end = INT64_MAX;
}
} else {
buf->new_chap = 0;
if ( frac > 0. )
{
int64_t pos = (double)ic->duration * (double)frac;
- if ( ic->start_time != AV_NOPTS_VALUE )
+ if ( ic->start_time != AV_NOPTS_VALUE && ic->start_time > 0 )
{
pos += ic->start_time;
}
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