X-Git-Url: http://git.osdn.jp/view?a=blobdiff_plain;f=libhb%2Freader.c;h=1dda826d0e2ac34f8937e6c98b1b04b92616cb81;hb=033e32de9c380f54c7d1362a3979da205ebc3a29;hp=0c451334e68e4613be0ff514e618cc609c1935c0;hpb=0884376d3d7ec40f19c3d9f243ccf6560c60c421;p=handbrake-jp%2Fhandbrake-jp-git.git diff --git a/libhb/reader.c b/libhb/reader.c index 0c451334..1dda826d 100644 --- a/libhb/reader.c +++ b/libhb/reader.c @@ -1,23 +1,36 @@ /* $Id: reader.c,v 1.21 2005/11/25 15:05:25 titer Exp $ This file is part of the HandBrake source code. - Homepage: . + Homepage: . It may be used under the terms of the GNU General Public License. */ #include "hb.h" typedef struct { + double average; // average time between packets + int64_t last; // last timestamp seen on this stream + int id; // stream id + int is_audio; // != 0 if this is an audio stream +} stream_timing_t; + +typedef struct +{ hb_job_t * job; hb_title_t * title; volatile int * die; hb_dvd_t * dvd; - hb_buffer_t * ps; hb_stream_t * stream; - - uint sequence; + stream_timing_t *stream_timing; + int64_t scr_offset; + hb_psdemux_t demux; + int scr_changes; + uint32_t sequence; + uint8_t st_slots; // size (in slots) of stream_timing array + uint8_t saw_video; // != 0 if we've seen video + uint8_t saw_audio; // != 0 if we've seen audio } hb_reader_t; /*********************************************************************** @@ -41,11 +54,131 @@ hb_thread_t * hb_reader_init( hb_job_t * job ) r->title = job->title; r->die = job->die; r->sequence = 0; - + + r->st_slots = 4; + r->stream_timing = calloc( sizeof(stream_timing_t), r->st_slots ); + r->stream_timing[0].id = r->title->video_id; + r->stream_timing[0].average = 90000. * (double)job->vrate_base / + (double)job->vrate; + r->stream_timing[0].last = -r->stream_timing[0].average; + r->stream_timing[1].id = -1; + return hb_thread_init( "reader", ReaderFunc, r, HB_NORMAL_PRIORITY ); } +static void push_buf( const hb_reader_t *r, hb_fifo_t *fifo, hb_buffer_t *buf ) +{ + while( !*r->die && !r->job->done && hb_fifo_is_full( fifo ) ) + { + /* + * Loop until the incoming fifo is ready to receive + * this buffer. + */ + hb_snooze( 50 ); + } + hb_fifo_push( fifo, buf ); +} + +static int is_audio( hb_reader_t *r, int id ) +{ + int i; + hb_audio_t *audio; + + for( i = 0; ( audio = hb_list_item( r->title->list_audio, i ) ); ++i ) + { + if ( audio->id == id ) + { + return 1; + } + } + return 0; +} + +// The MPEG STD (Standard Target Decoder) essentially requires that we keep +// per-stream timing so that when there's a timing discontinuity we can +// seemlessly join packets on either side of the discontinuity. This join +// requires that we know the timestamp of the previous packet and the +// average inter-packet time (since we position the new packet at the end +// of the previous packet). The next four routines keep track of this +// per-stream timing. + +// find the per-stream timing state for 'buf' + +static stream_timing_t *find_st( hb_reader_t *r, const hb_buffer_t *buf ) +{ + stream_timing_t *st = r->stream_timing; + for ( ; st->id != -1; ++st ) + { + if ( st->id == buf->id ) + return st; + } + return NULL; +} + +// find or create the per-stream timing state for 'buf' + +static stream_timing_t *id_to_st( hb_reader_t *r, const hb_buffer_t *buf ) +{ + stream_timing_t *st = r->stream_timing; + while ( st->id != buf->id && st->id != -1) + { + ++st; + } + // if we haven't seen this stream add it. + if ( st->id == -1 ) + { + // we keep the steam timing info in an array with some power-of-two + // number of slots. If we don't have two slots left (one for our new + // entry plus one for the "-1" eol) we need to expand the array. + int slot = st - r->stream_timing; + if ( slot + 1 >= r->st_slots ) + { + r->st_slots *= 2; + r->stream_timing = realloc( r->stream_timing, r->st_slots * + sizeof(*r->stream_timing) ); + st = r->stream_timing + slot; + } + st->id = buf->id; + st->average = 30.*90.; + if ( r->saw_video ) + st->last = buf->renderOffset - st->average; + else + st->last = -st->average; + if ( ( st->is_audio = is_audio( r, buf->id ) ) != 0 ) + { + r->saw_audio = 1; + } + st[1].id = -1; + } + return st; +} + +// update the average inter-packet time of the stream associated with 'buf' +// using a recursive low-pass filter with a 16 packet time constant. + +static void update_ipt( hb_reader_t *r, const hb_buffer_t *buf ) +{ + stream_timing_t *st = id_to_st( r, buf ); + double dt = buf->renderOffset - st->last; + st->average += ( dt - st->average ) * (1./32.); + st->last = buf->renderOffset; +} + +// use the per-stream state associated with 'buf' to compute a new scr_offset +// such that 'buf' will follow the previous packet of this stream separated +// by the average packet time of the stream. + +static void new_scr_offset( hb_reader_t *r, hb_buffer_t *buf ) +{ + stream_timing_t *st = id_to_st( r, buf ); + int64_t nxt = st->last + st->average; + r->scr_offset = buf->renderOffset - nxt; + buf->renderOffset = nxt; + r->scr_changes = r->demux.scr_changes; + st->last = buf->renderOffset; +} + /*********************************************************************** * ReaderFunc *********************************************************************** @@ -56,7 +189,6 @@ static void ReaderFunc( void * _r ) hb_reader_t * r = _r; hb_fifo_t ** fifos; hb_buffer_t * buf; - hb_buffer_t * buf_old; hb_list_t * list; int n; int chapter = -1; @@ -64,7 +196,7 @@ static void ReaderFunc( void * _r ) if( !( r->dvd = hb_dvd_init( r->title->dvd ) ) ) { - if ( !(r->stream = hb_stream_open(r->title->dvd) ) ) + if ( !( r->stream = hb_stream_open( r->title->dvd, r->title ) ) ) { return; } @@ -72,42 +204,82 @@ static void ReaderFunc( void * _r ) if (r->dvd) { - /* - * XXX this code is a temporary hack that should go away if/when - * chapter merging goes away in libhb/dvd.c - * map the start and end chapter numbers to on-media chapter - * numbers since chapter merging could cause the handbrake numbers - * to diverge from the media numbers and, if our chapter_end is after - * a media chapter that got merged, we'll stop ripping too early. - */ - int start = r->job->chapter_start; - hb_chapter_t * chap = hb_list_item( r->title->list_chapter, chapter_end - 1 ); - - chapter_end = chap->index; - if (start > 1) - { - chap = hb_list_item( r->title->list_chapter, start - 1 ); - start = chap->index; - } - /* end chapter mapping XXX */ - - if( !hb_dvd_start( r->dvd, r->title->index, start ) ) - { - hb_dvd_close( &r->dvd ); - return; - } + /* + * XXX this code is a temporary hack that should go away if/when + * chapter merging goes away in libhb/dvd.c + * map the start and end chapter numbers to on-media chapter + * numbers since chapter merging could cause the handbrake numbers + * to diverge from the media numbers and, if our chapter_end is after + * a media chapter that got merged, we'll stop ripping too early. + */ + int start = r->job->chapter_start; + hb_chapter_t *chap = hb_list_item( r->title->list_chapter, chapter_end - 1 ); + + chapter_end = chap->index; + if (start > 1) + { + chap = hb_list_item( r->title->list_chapter, start - 1 ); + start = chap->index; + } + /* end chapter mapping XXX */ + + if( !hb_dvd_start( r->dvd, r->title, start ) ) + { + hb_dvd_close( &r->dvd ); + return; + } + if (r->job->angle) + { + hb_dvd_set_angle( r->dvd, r->job->angle ); + } + + if ( r->job->start_at_preview ) + { + // XXX code from DecodePreviews - should go into its own routine + hb_dvd_seek( r->dvd, (float)r->job->start_at_preview / + ( r->job->seek_points ? ( r->job->seek_points + 1.0 ) : 11.0 ) ); + } } - + else if ( r->stream && r->job->start_at_preview ) + { + + // XXX code from DecodePreviews - should go into its own routine + hb_stream_seek( r->stream, (float)( r->job->start_at_preview - 1 ) / + ( r->job->seek_points ? ( r->job->seek_points + 1.0 ) : 11.0 ) ); + + } + else if( r->stream ) + { + /* + * Standard stream, seek to the starting chapter, if set, and track the + * end chapter so that we end at the right time. + */ + int start = r->job->chapter_start; + hb_chapter_t *chap = hb_list_item( r->title->list_chapter, chapter_end - 1 ); + + chapter_end = chap->index; + if (start > 1) + { + chap = hb_list_item( r->title->list_chapter, start - 1 ); + start = chap->index; + } + + /* + * Seek to the start chapter. + */ + hb_stream_seek_chapter( r->stream, start ); + } + list = hb_list_init(); - r->ps = hb_buffer_init( HB_DVD_READ_BUFFER_SIZE ); + hb_buffer_t *ps = hb_buffer_init( HB_DVD_READ_BUFFER_SIZE ); while( !*r->die && !r->job->done ) { if (r->dvd) - chapter = hb_dvd_chapter( r->dvd ); + chapter = hb_dvd_chapter( r->dvd ); else if (r->stream) - chapter = 1; - + chapter = hb_stream_chapter( r->stream ); + if( chapter < 0 ) { hb_log( "reader: end of the title reached" ); @@ -122,14 +294,14 @@ static void ReaderFunc( void * _r ) if (r->dvd) { - if( !hb_dvd_read( r->dvd, r->ps ) ) + if( !hb_dvd_read( r->dvd, ps ) ) { break; } } else if (r->stream) { - if ( !hb_stream_read( r->stream, r->ps ) ) + if ( !hb_stream_read( r->stream, ps ) ) { break; } @@ -145,11 +317,11 @@ static void ReaderFunc( void * _r ) #define p state.param.working state.state = HB_STATE_WORKING; - p.progress = (float)chapter / (float)r->job->chapter_end; + p.progress = (double)chapter / (double)r->job->chapter_end; if( p.progress > 1.0 ) { p.progress = 1.0; - } + } p.rate_avg = 0.0; p.hours = -1; p.minutes = -1; @@ -157,41 +329,125 @@ static void ReaderFunc( void * _r ) hb_set_state( r->job->h, &state ); } - hb_demux_ps( r->ps, list ); + (hb_demux[r->title->demuxer])( ps, list, &r->demux ); while( ( buf = hb_list_item( list, 0 ) ) ) { hb_list_rem( list, buf ); fifos = GetFifoForId( r->job, buf->id ); + + if ( fifos && ! r->saw_video ) + { + // The first data packet with a PTS from an audio or video stream + // that we're decoding defines 'time zero'. Discard packets until + // we get one. + if ( buf->start != -1 && buf->renderOffset != -1 && + ( buf->id == r->title->video_id || is_audio( r, buf->id ) ) ) + { + // force a new scr offset computation + r->scr_changes = r->demux.scr_changes - 1; + // create a stream state if we don't have one so the + // offset will get computed correctly. + id_to_st( r, buf ); + r->saw_video = 1; + hb_log( "reader: first SCR %"PRId64" id %d DTS %"PRId64, + r->demux.last_scr, buf->id, buf->renderOffset ); + } + else + { + fifos = NULL; + } + } if( fifos ) - { - buf->sequence = r->sequence++; - for( n = 0; fifos[n] != NULL; n++) + { + if ( buf->renderOffset != -1 ) { - if( n != 0 ) + if ( r->scr_changes == r->demux.scr_changes ) { - /* - * Replace the buffer with a new copy of itself for when - * it is being sent down multiple fifos. - */ - buf_old = buf; - buf = hb_buffer_init(buf_old->size); - memcpy( buf->data, buf_old->data, buf->size ); - hb_buffer_copy_settings( buf, buf_old ); + // This packet is referenced to the same SCR as the last. + // Adjust timestamp to remove the System Clock Reference + // offset then update the average inter-packet time + // for this stream. + buf->renderOffset -= r->scr_offset; + update_ipt( r, buf ); } - - while( !*r->die && !r->job->done && - hb_fifo_is_full( fifos[n] ) ) + else { - /* - * Loop until the incoming fifo is reaqdy to receive - * this buffer. - */ - hb_snooze( 50 ); + // This is the first audio or video packet after an SCR + // change. Compute a new scr offset that would make this + // packet follow the last of this stream with the correct + // average spacing. + stream_timing_t *st = find_st( r, buf ); + + if ( st ) + { + // if this is the video stream and we don't have + // audio yet or this is an audio stream + // generate a new scr + if ( st->is_audio || + ( st == r->stream_timing && !r->saw_audio ) ) + { + new_scr_offset( r, buf ); + } + else + { + // defer the scr change until we get some + // audio since audio has a timestamp per + // frame but video & subtitles don't. Clear + // the timestamps so the decoder will generate + // them from the frame durations. + if ( st != r->stream_timing ) + { + // not a video stream so it's probably + // subtitles - the best we can do is to + // line it up with the last video packet. + buf->start = r->stream_timing->last; + } + else + { + buf->start = -1; + buf->renderOffset = -1; + } + } + } + else + { + // we got a new scr at the same time as the first + // packet of a stream we've never seen before. We + // have no idea what the timing should be so toss + // this buffer & wait for a stream we've already seen. + // add stream to list of streams we have seen + id_to_st( r, buf ); + hb_buffer_close( &buf ); + continue; + } } + } + if ( buf->start != -1 ) + { + buf->start -= r->scr_offset; + if ( r->job->pts_to_stop && buf->start > r->job->pts_to_stop ) + { + // we're doing a subset of the input and we've hit the + // stopping point. + hb_buffer_close( &buf ); + goto done; + } + } - hb_fifo_push( fifos[n], buf ); + buf->sequence = r->sequence++; + /* if there are mutiple output fifos, send a copy of the + * buffer down all but the first (we have to not ship the + * original buffer or we'll race with the thread that's + * consuming the buffer & inject garbage into the data stream). */ + for( n = 1; fifos[n] != NULL; n++) + { + hb_buffer_t *buf_copy = hb_buffer_init( buf->size ); + hb_buffer_copy_settings( buf_copy, buf ); + memcpy( buf_copy->data, buf->data, buf->size ); + push_buf( r, fifos[n], buf_copy ); } + push_buf( r, fifos[0], buf ); } else { @@ -200,22 +456,49 @@ static void ReaderFunc( void * _r ) } } + done: + // send empty buffers downstream to video & audio decoders to signal we're done. + push_buf( r, r->job->fifo_mpeg2, hb_buffer_init(0) ); + + hb_audio_t *audio; + for( n = 0; ( audio = hb_list_item( r->job->title->list_audio, n ) ); ++n ) + { + if ( audio->priv.fifo_in ) + push_buf( r, audio->priv.fifo_in, hb_buffer_init(0) ); + } + + hb_subtitle_t *subtitle; + for( n = 0; ( subtitle = hb_list_item( r->job->title->list_subtitle, n ) ); ++n ) + { + if ( subtitle->fifo_in && subtitle->source == VOBSUB) + push_buf( r, subtitle->fifo_in, hb_buffer_init(0) ); + } + hb_list_empty( &list ); - hb_buffer_close( &r->ps ); + hb_buffer_close( &ps ); if (r->dvd) { - hb_dvd_stop( r->dvd ); - hb_dvd_close( &r->dvd ); + hb_dvd_stop( r->dvd ); + hb_dvd_close( &r->dvd ); } else if (r->stream) { - hb_stream_close(&r->stream); + hb_stream_close(&r->stream); } - + + if ( r->stream_timing ) + { + free( r->stream_timing ); + } + + hb_log( "reader: done. %d scr changes", r->demux.scr_changes ); + if ( r->demux.dts_drops ) + { + hb_log( "reader: %d drops because DTS out of range", r->demux.dts_drops ); + } + free( r ); _r = NULL; - - hb_log( "reader: done" ); } /*********************************************************************** @@ -228,60 +511,52 @@ static hb_fifo_t ** GetFifoForId( hb_job_t * job, int id ) hb_title_t * title = job->title; hb_audio_t * audio; hb_subtitle_t * subtitle; - int i, n; - static hb_fifo_t * fifos[8]; + int i, n, count; + static hb_fifo_t * fifos[100]; memset(fifos, 0, sizeof(fifos)); - if( id == 0xE0 ) + if( id == title->video_id ) { - if( job->indepth_scan ) + if( job->indepth_scan ) { /* * Ditch the video here during the indepth scan until * we can improve the MPEG2 decode performance. */ return NULL; - } - else + } + else { fifos[0] = job->fifo_mpeg2; return fifos; } } - if( job->indepth_scan ) { - /* - * Count the occurances of the subtitles, don't actually - * return any to encode unless we are looking fro forced - * subtitles in which case we need to look in the sub picture - * to see if it has the forced flag enabled. - */ - for (i=0; i < hb_list_count(title->list_subtitle); i++) { - subtitle = hb_list_item( title->list_subtitle, i); - if (id == subtitle->id) { + n = 0; + count = hb_list_count( title->list_subtitle ); + count = count > 99 ? 99 : count; + for( i=0; i < count; i++ ) { + subtitle = hb_list_item( title->list_subtitle, i ); + if (id == subtitle->id) { + subtitle->hits++; + if( !job->indepth_scan || job->select_subtitle_config.force ) + { /* - * A hit, count it. + * Pass the subtitles to be processed if we are not scanning, or if + * we are scanning and looking for forced subs, then pass them up + * to decode whether the sub is a forced one. */ - subtitle->hits++; - if( job->subtitle_force ) - { - - fifos[0] = subtitle->fifo_in; - return fifos; - } - break; + fifos[n++] = subtitle->fifo_in; } } - } else { - if( ( subtitle = hb_list_item( title->list_subtitle, 0 ) ) && - id == subtitle->id ) - { - fifos[0] = subtitle->fifo_in; - return fifos; - } } - if( !job->indepth_scan ) + if ( n != 0 ) + { + return fifos; + } + + if( !job->indepth_scan ) { n = 0; for( i = 0; i < hb_list_count( title->list_audio ); i++ ) @@ -289,7 +564,7 @@ static hb_fifo_t ** GetFifoForId( hb_job_t * job, int id ) audio = hb_list_item( title->list_audio, i ); if( id == audio->id ) { - fifos[n++] = audio->fifo_in; + fifos[n++] = audio->priv.fifo_in; } }