/* $Id: sync.c,v 1.38 2005/04/14 21:57:58 titer Exp $
This file is part of the HandBrake source code.
- Homepage: <http://handbrake.m0k.org/>.
+ Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
#include "hb.h"
+#include "hbffmpeg.h"
#include <stdio.h>
-
#include "samplerate.h"
-#include "ffmpeg/avcodec.h"
#ifdef INT64_MIN
#undef INT64_MIN /* Because it isn't defined correctly in Zeta */
int64_t next_start; /* start time of next output frame */
int64_t next_pts; /* start time of next input frame */
- int64_t start_silence; /* if we're inserting silence, the time we started */
int64_t first_drop; /* PTS of first 'went backwards' frame dropped */
int drop_count; /* count of 'time went backwards' drops */
- int inserting_silence;
/* Raw */
SRC_STATE * state;
struct hb_work_private_s
{
hb_job_t * job;
- int done;
-
+ int busy; // bitmask with one bit for each active input
+ // (bit 0 = video; 1 = audio 0, 2 = audio 1, ...
+ // appropriate bit is cleared when input gets
+ // an eof buf. syncWork returns done when all
+ // bits are clear.
/* Video */
- hb_subtitle_t * subtitle;
int64_t pts_offset;
int64_t next_start; /* start time of next output frame */
int64_t next_pts; /* start time of next input frame */
/* Audio */
hb_sync_audio_t sync_audio[8];
+ int64_t audio_passthru_slip;
/* Statistics */
uint64_t st_counts[4];
* Local prototypes
**********************************************************************/
static void InitAudio( hb_work_object_t * w, int i );
-static int SyncVideo( hb_work_object_t * w );
+static void SyncVideo( hb_work_object_t * w );
static void SyncAudio( hb_work_object_t * w, int i );
-static int NeedSilence( hb_work_object_t * w, hb_audio_t *, int i );
static void InsertSilence( hb_work_object_t * w, int i, int64_t d );
static void UpdateState( hb_work_object_t * w );
pv->job = job;
pv->pts_offset = INT64_MIN;
- pv->count_frames = 0;
/* Calculate how many video frames we are expecting */
- duration = 0;
- for( i = job->chapter_start; i <= job->chapter_end; i++ )
+ if (job->pts_to_stop)
+ {
+ duration = job->pts_to_stop + 90000;
+ }
+ else if( job->frame_to_stop )
{
- chapter = hb_list_item( title->list_chapter, i - 1 );
- duration += chapter->duration;
+ /* Set the duration to a rough estimate */
+ duration = ( job->frame_to_stop / ( job->vrate / job->vrate_base ) ) * 90000;
}
- duration += 90000;
+ else
+ {
+ duration = 0;
+ for( i = job->chapter_start; i <= job->chapter_end; i++ )
+ {
+ chapter = hb_list_item( title->list_chapter, i - 1 );
+ duration += chapter->duration;
+ }
+ duration += 90000;
/* 1 second safety so we're sure we won't miss anything */
+ }
pv->count_frames_max = duration * job->vrate / job->vrate_base / 90000;
hb_log( "sync: expecting %d video frames", pv->count_frames_max );
+ pv->busy |= 1;
/* Initialize libsamplerate for every audio track we have */
- for( i = 0; i < hb_list_count( title->list_audio ); i++ )
+ if ( ! job->indepth_scan )
{
- InitAudio( w, i );
+ for( i = 0; i < hb_list_count( title->list_audio ) && i < 8; i++ )
+ {
+ pv->busy |= ( 1 << (i + 1) );
+ InitAudio( w, i );
+ }
}
- /* Get subtitle info, if any */
- pv->subtitle = hb_list_item( title->list_subtitle, 0 );
-
- pv->video_sequence = 0;
-
return 0;
}
for( i = 0; i < hb_list_count( title->list_audio ); i++ )
{
- if ( pv->sync_audio[i].start_silence )
- {
- hb_log( "sync: added %d ms of silence to audio %d",
- (int)((pv->sync_audio[i].next_pts -
- pv->sync_audio[i].start_silence) / 90), i );
- }
-
audio = hb_list_item( title->list_audio, i );
if( audio->config.out.codec == HB_ACODEC_AC3 )
{
hb_work_private_t * pv = w->private_data;
int i;
- /* If we ever got a video frame, handle audio now */
- if( pv->pts_offset != INT64_MIN )
+ if ( pv->busy & 1 )
+ SyncVideo( w );
+
+ for( i = 0; i < hb_list_count( pv->job->title->list_audio ); i++ )
{
- for( i = 0; i < hb_list_count( pv->job->title->list_audio ); i++ )
- {
+ if ( pv->busy & ( 1 << (i + 1) ) )
SyncAudio( w, i );
- }
}
- /* Handle video */
- return SyncVideo( w );
+ return ( pv->busy? HB_WORK_OK : HB_WORK_DONE );
}
hb_work_object_t hb_sync =
c->sample_rate = sync->audio->config.in.samplerate;
c->channels = HB_INPUT_CH_LAYOUT_GET_DISCRETE_COUNT( sync->audio->config.in.channel_layout );
- if( avcodec_open( c, codec ) < 0 )
+ if( hb_avcodec_open( c, codec ) < 0 )
{
hb_log( "sync: avcodec_open failed" );
return;
}
free( zeros );
- avcodec_close( c );
+ hb_avcodec_close( c );
av_free( c );
}
else
{
/* Initialize libsamplerate */
int error;
- sync->state = src_new( SRC_LINEAR, HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(sync->audio->config.out.mixdown), &error );
+ sync->state = src_new( SRC_SINC_MEDIUM_QUALITY, HB_AMIXDOWN_GET_DISCRETE_CHANNEL_COUNT(sync->audio->config.out.mixdown), &error );
sync->data.end_of_input = 0;
}
}
***********************************************************************
*
**********************************************************************/
-static int SyncVideo( hb_work_object_t * w )
+static void SyncVideo( hb_work_object_t * w )
{
hb_work_private_t * pv = w->private_data;
hb_buffer_t * cur, * next, * sub = NULL;
hb_job_t * job = pv->job;
+ hb_subtitle_t *subtitle;
+ int i;
- if( pv->done )
+ if( !pv->cur && !( pv->cur = hb_fifo_get( job->fifo_raw ) ) )
{
- return HB_WORK_DONE;
+ /* We haven't even got a frame yet */
+ return;
}
-
- if( hb_thread_has_exited( job->reader ) &&
- !hb_fifo_size( job->fifo_mpeg2 ) &&
- !hb_fifo_size( job->fifo_raw ) )
+ cur = pv->cur;
+ if( cur->size == 0 )
{
- pv->done = 1;
+ /* we got an end-of-stream. Feed it downstream & signal that we're done. */
+ hb_fifo_push( job->fifo_sync, hb_buffer_init( 0 ) );
- hb_buffer_t * buf_tmp;
-
- // Drop an empty buffer into our output to ensure that things
- // get flushed all the way out.
- buf_tmp = hb_buffer_init(0); // Empty end buffer
- hb_fifo_push( job->fifo_sync, buf_tmp );
-
- return HB_WORK_DONE;
- }
+ /*
+ * Push through any subtitle EOFs in case they were not synced through.
+ */
+ for( i = 0; i < hb_list_count( job->list_subtitle ); i++)
+ {
+ subtitle = hb_list_item( job->list_subtitle, i );
+ if( subtitle->dest == PASSTHRUSUB )
+ {
+ hb_fifo_push( subtitle->fifo_out, hb_buffer_init( 0 ) );
+ }
+ }
- if( !pv->cur && !( pv->cur = hb_fifo_get( job->fifo_raw ) ) )
- {
- /* We haven't even got a frame yet */
- return HB_WORK_OK;
+ pv->busy &=~ 1;
+ return;
}
- cur = pv->cur;
/* At this point we have a frame to process. Let's check
1) if we will be able to push into the fifo ahead
{
hb_buffer_t * buf_tmp;
+ if( next->size == 0 )
+ {
+ /* we got an end-of-stream. Feed it downstream & signal that
+ * we're done. Note that this means we drop the final frame of
+ * video (we don't know its duration). On DVDs the final frame
+ * is often strange and dropping it seems to be a good idea. */
+ hb_fifo_push( job->fifo_sync, hb_buffer_init( 0 ) );
+
+ /*
+ * Push through any subtitle EOFs in case they were not synced through.
+ */
+ for( i = 0; i < hb_list_count( job->list_subtitle ); i++)
+ {
+ subtitle = hb_list_item( job->list_subtitle, i );
+ if( subtitle->dest == PASSTHRUSUB )
+ {
+ hb_fifo_push( subtitle->fifo_out, hb_buffer_init( 0 ) );
+ }
+ }
+ pv->busy &=~ 1;
+ return;
+ }
if( pv->pts_offset == INT64_MIN )
{
/* This is our first frame */
}
}
+ if( cur->new_chap ) {
+ hb_log("sync got new chapter %d", cur->new_chap );
+ }
+
/*
* since the first frame is always 0 and the upstream reader code
* is taking care of adjusting for pts discontinuities, we just have
* can deal with overlaps of up to a frame time but anything larger
* we handle by dropping frames here.
*/
- if ( (int64_t)( next->start - pv->next_pts ) <= 0 )
+ if ( (int64_t)( next->start - cur->start ) <= 0 ||
+ (int64_t)( (cur->start - pv->audio_passthru_slip ) - pv->next_pts ) < 0 )
{
if ( pv->first_drop == 0 )
{
if ( pv->first_drop )
{
hb_log( "sync: video time didn't advance - dropped %d frames "
- "(delta %d ms, current %lld, next %lld)",
- pv->drop_count, (int)( pv->next_pts - pv->first_drop ) / 90,
- pv->next_pts, pv->first_drop );
+ "(delta %d ms, current %lld, next %lld, dur %d)",
+ pv->drop_count, (int)( cur->start - pv->first_drop ) / 90,
+ cur->start, next->start, (int)( next->start - cur->start ) );
pv->first_drop = 0;
pv->drop_count = 0;
}
*/
pv->video_sequence = cur->sequence;
- /* Look for a subtitle for this frame */
- if( pv->subtitle )
+ /*
+ * Look for a subtitle for this frame.
+ *
+ * If found then it will be tagged onto a video buffer of the correct time and
+ * sent in to the render pipeline. This only needs to be done for VOBSUBs which
+ * get rendered, other types of subtitles can just sit in their raw_queue until
+ * delt with at muxing.
+ */
+ for( i = 0; i < hb_list_count( job->list_subtitle ); i++)
{
- hb_buffer_t * sub2;
- while( ( sub = hb_fifo_see( pv->subtitle->fifo_raw ) ) )
- {
- /* If two subtitles overlap, make the first one stop
- when the second one starts */
- sub2 = hb_fifo_see2( pv->subtitle->fifo_raw );
- if( sub2 && sub->stop > sub2->start )
- sub->stop = sub2->start;
-
- // hb_log("0x%x: video seq: %lld subtitle sequence: %lld",
- // sub, cur->sequence, sub->sequence);
-
- if( sub->sequence > cur->sequence )
- {
- /*
- * The video is behind where we are, so wait until
- * it catches up to the same reader point on the
- * DVD. Then our PTS should be in the same region
- * as the video.
- */
- sub = NULL;
- break;
- }
-
- if( sub->stop > cur->start ) {
- /*
- * The stop time is in the future, so fall through
- * and we'll deal with it in the next block of
- * code.
- */
- break;
- }
-
- /*
- * The subtitle is older than this picture, trash it
- */
- sub = hb_fifo_get( pv->subtitle->fifo_raw );
- hb_buffer_close( &sub );
- }
+ subtitle = hb_list_item( job->list_subtitle, i );
/*
- * There is a valid subtitle, is it time to display it?
+ * Rewrite timestamps on subtitles that need it (on raw queue).
*/
- if( sub )
+ if( subtitle->source == CC608SUB ||
+ subtitle->source == CC708SUB )
{
- if( sub->stop > sub->start)
+ /*
+ * Rewrite timestamps on subtitles that came from Closed Captions
+ * since they are using the MPEG2 timestamps.
+ */
+ while( ( sub = hb_fifo_see( subtitle->fifo_raw ) ) )
{
/*
- * Normal subtitle which ends after it starts, check to
- * see that the current video is between the start and end.
+ * Rewrite the timestamps as and when the video
+ * (cur->start) reaches the same timestamp as a
+ * closed caption (sub->start).
+ *
+ * What about discontinuity boundaries - not delt
+ * with here - Van?
+ *
+ * Bypass the sync fifo altogether.
*/
- if( cur->start > sub->start &&
- cur->start < sub->stop )
+ if( sub->size <= 0 )
{
+ sub = hb_fifo_get( subtitle->fifo_raw );
+ hb_fifo_push( subtitle->fifo_out, sub );
+ sub = NULL;
+ break;
+ } else {
/*
- * We should be playing this, so leave the
- * subtitle in place.
+ * Sync the subtitles to the incoming video, and use
+ * the matching converted video timestamp.
+ *
+ * Note that it doesn't appear that we need to convert
+ * timestamps, I guess that they were already correct,
+ * so just push them through for rendering.
*
- * fall through to display
*/
- if( ( sub->stop - sub->start ) < ( 3 * 90000 ) )
+ if( sub->start < cur->start )
{
- /*
- * Subtitle is on for less than three seconds, extend
- * the time that it is displayed to make it easier
- * to read. Make it 3 seconds or until the next
- * subtitle is displayed.
- *
- * This is in response to Indochine which only
- * displays subs for 1 second - too fast to read.
- */
- sub->stop = sub->start + ( 3 * 90000 );
-
- sub2 = hb_fifo_see2( pv->subtitle->fifo_raw );
-
- if( sub2 && sub->stop > sub2->start )
- {
- sub->stop = sub2->start;
- }
+ uint64_t duration;
+ duration = sub->stop - sub->start;
+ sub = hb_fifo_get( subtitle->fifo_raw );
+ hb_fifo_push( subtitle->fifo_out, sub );
+ } else {
+ sub = NULL;
+ break;
}
}
- else
+ }
+ }
+
+ if( subtitle->source == VOBSUB )
+ {
+ hb_buffer_t * sub2;
+ while( ( sub = hb_fifo_see( subtitle->fifo_raw ) ) )
+ {
+ if( sub->size == 0 )
{
/*
- * Defer until the play point is within the subtitle
+ * EOF, pass it through immediately.
+ */
+ break;
+ }
+
+ /* If two subtitles overlap, make the first one stop
+ when the second one starts */
+ sub2 = hb_fifo_see2( subtitle->fifo_raw );
+ if( sub2 && sub->stop > sub2->start )
+ sub->stop = sub2->start;
+
+ // hb_log("0x%x: video seq: %lld subtitle sequence: %lld",
+ // sub, cur->sequence, sub->sequence);
+
+ if( sub->sequence > cur->sequence )
+ {
+ /*
+ * The video is behind where we are, so wait until
+ * it catches up to the same reader point on the
+ * DVD. Then our PTS should be in the same region
+ * as the video.
*/
sub = NULL;
+ break;
}
+
+ if( sub->stop > cur->start ) {
+ /*
+ * The stop time is in the future, so fall through
+ * and we'll deal with it in the next block of
+ * code.
+ */
+ break;
+ }
+
+ /*
+ * The subtitle is older than this picture, trash it
+ */
+ sub = hb_fifo_get( subtitle->fifo_raw );
+ hb_buffer_close( &sub );
}
- else
+
+ if( sub && sub->size == 0 )
{
- /*
- * The end of the subtitle is less than the start, this is a
- * sign of a PTS discontinuity.
+ /*
+ * Continue immediately on subtitle EOF
*/
- if( sub->start > cur->start )
+ break;
+ }
+
+ /*
+ * There is a valid subtitle, is it time to display it?
+ */
+ if( sub )
+ {
+ if( sub->stop > sub->start)
{
/*
- * we haven't reached the start time yet, or
- * we have jumped backwards after having
- * already started this subtitle.
+ * Normal subtitle which ends after it starts, check to
+ * see that the current video is between the start and end.
*/
- if( cur->start < sub->stop )
+ if( cur->start > sub->start &&
+ cur->start < sub->stop )
{
/*
- * We have jumped backwards and so should
- * continue displaying this subtitle.
+ * We should be playing this, so leave the
+ * subtitle in place.
*
- * fall through to display.
+ * fall through to display
*/
+ if( ( sub->stop - sub->start ) < ( 3 * 90000 ) )
+ {
+ /*
+ * Subtitle is on for less than three seconds, extend
+ * the time that it is displayed to make it easier
+ * to read. Make it 3 seconds or until the next
+ * subtitle is displayed.
+ *
+ * This is in response to Indochine which only
+ * displays subs for 1 second - too fast to read.
+ */
+ sub->stop = sub->start + ( 3 * 90000 );
+
+ sub2 = hb_fifo_see2( subtitle->fifo_raw );
+
+ if( sub2 && sub->stop > sub2->start )
+ {
+ sub->stop = sub2->start;
+ }
+ }
}
else
{
*/
sub = NULL;
}
- } else {
+ }
+ else
+ {
/*
- * Play this subtitle as the start is greater than our
- * video point.
- *
- * fall through to display/
+ * The end of the subtitle is less than the start, this is a
+ * sign of a PTS discontinuity.
*/
+ if( sub->start > cur->start )
+ {
+ /*
+ * we haven't reached the start time yet, or
+ * we have jumped backwards after having
+ * already started this subtitle.
+ */
+ if( cur->start < sub->stop )
+ {
+ /*
+ * We have jumped backwards and so should
+ * continue displaying this subtitle.
+ *
+ * fall through to display.
+ */
+ }
+ else
+ {
+ /*
+ * Defer until the play point is within the subtitle
+ */
+ sub = NULL;
+ }
+ } else {
+ /*
+ * Play this subtitle as the start is greater than our
+ * video point.
+ *
+ * fall through to display/
+ */
+ }
}
}
}
- }
-
- int64_t duration;
- if ( job->mux & HB_MUX_AVI )
- {
- /*
- * The concept of variable frame rate video was a bit too advanced
- * for Microsoft so AVI doesn't support it. Since almost all dvd
- * video is VFR we have to convert it to constant frame rate to
- * put it in an AVI container. So here we duplicate, drop and
- * otherwise trash video frames to appease the gods of Redmond.
- */
-
- /* mpeg durations are exact when expressed in ticks of the
- * 27MHz System clock but not in HB's 90KHz PTS clock. To avoid
- * a truncation bias that will eventually cause the audio to desync
- * we compute the duration of the next frame using 27MHz ticks
- * then truncate it to 90KHz. */
- duration = ( (int64_t)(pv->count_frames + 1 ) * job->vrate_base ) / 300 -
- pv->next_start;
-
- /* We don't want the input & output clocks to be exactly in phase
- * otherwise small variations in the time will cause us to think
- * we're a full frame off & there will be lots of drops and dups.
- * We offset the input clock by half the duration so it's maximally
- * out of phase with the output clock. */
- if( cur->start < pv->next_start - ( duration >> 1 ) )
+ if( sub )
{
- /* current frame too old - drop it */
- if ( cur->new_chap )
- {
- pv->chap_mark = cur->new_chap;
- }
- hb_buffer_close( &cur );
- pv->cur = cur = hb_fifo_get( job->fifo_raw );
- pv->next_pts = next->start;
- ++pv->drops;
- continue;
+ /*
+ * Got a sub to display...
+ */
+ break;
}
+ } // end subtitles
- if( next->start > pv->next_start + duration + ( duration >> 1 ) )
- {
- /* next frame too far ahead - dup current frame */
- buf_tmp = hb_buffer_init( cur->size );
- hb_buffer_copy_settings( buf_tmp, cur );
- memcpy( buf_tmp->data, cur->data, cur->size );
- buf_tmp->sequence = cur->sequence;
- ++pv->dups;
- }
- else
- {
- /* this frame in our time window & doesn't need to be duped */
- buf_tmp = cur;
- pv->cur = cur = hb_fifo_get( job->fifo_raw );
- pv->next_pts = next->start;
- }
- }
- else
+ /*
+ * Adjust the pts of the current frame so that it's contiguous
+ * with the previous frame. The start time of the current frame
+ * has to be the end time of the previous frame and the stop
+ * time has to be the start of the next frame. We don't
+ * make any adjustments to the source timestamps other than removing
+ * the clock offsets (which also removes pts discontinuities).
+ * This means we automatically encode at the source's frame rate.
+ * MP2 uses an implicit duration (frames end when the next frame
+ * starts) but more advanced containers like MP4 use an explicit
+ * duration. Since we're looking ahead one frame we set the
+ * explicit stop time from the start time of the next frame.
+ */
+ buf_tmp = cur;
+ pv->cur = cur = hb_fifo_get( job->fifo_raw );
+ pv->next_pts = cur->start;
+ int64_t duration = cur->start - buf_tmp->start;
+ if ( duration <= 0 )
{
- /*
- * Adjust the pts of the current frame so that it's contiguous
- * with the previous frame. The start time of the current frame
- * has to be the end time of the previous frame and the stop
- * time has to be the start of the next frame. We don't
- * make any adjustments to the source timestamps other than removing
- * the clock offsets (which also removes pts discontinuities).
- * This means we automatically encode at the source's frame rate.
- * MP2 uses an implicit duration (frames end when the next frame
- * starts) but more advanced containers like MP4 use an explicit
- * duration. Since we're looking ahead one frame we set the
- * explicit stop time from the start time of the next frame.
- */
- buf_tmp = cur;
- pv->cur = cur = hb_fifo_get( job->fifo_raw );
- pv->next_pts = next->start;
- duration = next->start - buf_tmp->start;
- if ( duration <= 0 )
- {
- hb_log( "sync: invalid video duration %lld, start %lld, next %lld",
- duration, buf_tmp->start, next->start );
- }
+ hb_log( "sync: invalid video duration %lld, start %lld, next %lld",
+ duration, buf_tmp->start, next->start );
}
buf_tmp->start = pv->next_start;
/* If we have a subtitle for this picture, copy it */
/* FIXME: we should avoid this memcpy */
- if( sub )
+ if( sub && subtitle &&
+ subtitle->format == PICTURESUB )
{
- buf_tmp->sub = hb_buffer_init( sub->size );
- buf_tmp->sub->x = sub->x;
- buf_tmp->sub->y = sub->y;
- buf_tmp->sub->width = sub->width;
- buf_tmp->sub->height = sub->height;
- memcpy( buf_tmp->sub->data, sub->data, sub->size );
+ if( sub->size > 0 )
+ {
+ if( subtitle->dest == RENDERSUB )
+ {
+ /*
+ * Tack onto the video buffer for rendering
+ */
+ buf_tmp->sub = hb_buffer_init( sub->size );
+ buf_tmp->sub->x = sub->x;
+ buf_tmp->sub->y = sub->y;
+ buf_tmp->sub->width = sub->width;
+ buf_tmp->sub->height = sub->height;
+ memcpy( buf_tmp->sub->data, sub->data, sub->size );
+ } else {
+ /*
+ * Pass-Through, pop it off of the raw queue, rewrite times and
+ * make it available to be reencoded.
+ */
+ uint64_t sub_duration;
+ sub = hb_fifo_get( subtitle->fifo_raw );
+ sub_duration = sub->stop - sub->start;
+ sub->start = buf_tmp->start;
+ sub->stop = sub->start + duration;
+ hb_fifo_push( subtitle->fifo_sync, sub );
+ }
+ } else {
+ /*
+ * EOF - consume for rendered, else pass through
+ */
+ if( subtitle->dest == RENDERSUB )
+ {
+ sub = hb_fifo_get( subtitle->fifo_raw );
+ hb_buffer_close( &sub );
+ } else {
+ sub = hb_fifo_get( subtitle->fifo_raw );
+ hb_fifo_push( subtitle->fifo_out, sub );
+ }
+ }
}
/* Push the frame to the renderer */
/* Update UI */
UpdateState( w );
+
+ if( job->frame_to_stop && pv->count_frames > job->frame_to_stop )
+ {
+ // Drop an empty buffer into our output to ensure that things
+ // get flushed all the way out.
+ hb_fifo_push( job->fifo_sync, hb_buffer_init( 0 ) );
+ pv->busy &=~ 1;
+ hb_log( "sync: reached %d frames, exiting early (%i busy)",
+ pv->count_frames, pv->busy );
+ return;
+ }
/* Make sure we won't get more frames then expected */
if( pv->count_frames >= pv->count_frames_max * 2)
{
- hb_log( "sync: got too many frames (%d), exiting early", pv->count_frames );
- pv->done = 1;
+ hb_log( "sync: got too many frames (%d), exiting early",
+ pv->count_frames );
- // Drop an empty buffer into our output to ensure that things
- // get flushed all the way out.
- buf_tmp = hb_buffer_init(0); // Empty end buffer
- hb_fifo_push( job->fifo_sync, buf_tmp );
-
- break;
+ // Drop an empty buffer into our output to ensure that things
+ // get flushed all the way out.
+ hb_fifo_push( job->fifo_sync, hb_buffer_init( 0 ) );
+ pv->busy &=~ 1;
+ return;
}
}
-
- return HB_WORK_OK;
}
static void OutputAudioFrame( hb_job_t *job, hb_audio_t *audio, hb_buffer_t *buf,
buf->start = start;
buf->stop = start + duration;
sync->next_start = start + duration;
- while( hb_fifo_is_full( fifo ) )
- {
- hb_snooze( 50 );
- if ( job->done && hb_fifo_is_full( fifo ) )
- {
- /* don't block here if the job's finished */
- hb_buffer_close( &buf );
- return;
- }
- }
hb_fifo_push( fifo, buf );
}
hb_audio_t * audio = sync->audio;
hb_buffer_t * buf;
hb_fifo_t * fifo;
+ int64_t start;
- if( audio->config.out.codec == HB_ACODEC_AC3 )
+ if( audio->config.out.codec == HB_ACODEC_AC3 ||
+ audio->config.out.codec == HB_ACODEC_DCA )
{
fifo = audio->priv.fifo_out;
}
while( !hb_fifo_is_full( fifo ) && ( buf = hb_fifo_see( audio->priv.fifo_raw ) ) )
{
- if ( (int64_t)( buf->start - sync->next_pts ) < 0 )
+ start = buf->start - pv->audio_passthru_slip;
+ /* if the next buffer is an eof send it downstream */
+ if ( buf->size <= 0 )
{
- /*
- * audio time went backwards by more than a frame time (this can
- * happen when we reset the PTS because of lost data).
- * Discard data that's in the past.
- */
- if ( sync->first_drop == 0 )
+ buf = hb_fifo_get( audio->priv.fifo_raw );
+ hb_fifo_push( fifo, buf );
+ pv->busy &=~ (1 << (i + 1) );
+ return;
+ }
+ if( job->frame_to_stop && pv->count_frames >= job->frame_to_stop )
+ {
+ hb_fifo_push( fifo, hb_buffer_init(0) );
+ pv->busy &=~ (1 << (i + 1) );
+ return;
+ }
+ if ( (int64_t)( start - sync->next_pts ) < 0 )
+ {
+ // audio time went backwards.
+ // If our output clock is more than a half frame ahead of the
+ // input clock drop this frame to move closer to sync.
+ // Otherwise drop frames until the input clock matches the output clock.
+ if ( sync->first_drop || sync->next_start - start > 90*15 )
{
- sync->first_drop = buf->start;
+ // Discard data that's in the past.
+ if ( sync->first_drop == 0 )
+ {
+ sync->first_drop = sync->next_pts;
+ }
+ ++sync->drop_count;
+ buf = hb_fifo_get( audio->priv.fifo_raw );
+ hb_buffer_close( &buf );
+ continue;
}
- ++sync->drop_count;
- buf = hb_fifo_get( audio->priv.fifo_raw );
- hb_buffer_close( &buf );
- continue;
+ sync->next_pts = start;
}
if ( sync->first_drop )
{
+ // we were dropping old data but input buf time is now current
hb_log( "sync: audio %d time went backwards %d ms, dropped %d frames "
"(next %lld, current %lld)", i,
(int)( sync->next_pts - sync->first_drop ) / 90,
sync->drop_count, sync->first_drop, sync->next_pts );
sync->first_drop = 0;
sync->drop_count = 0;
+ sync->next_pts = start;
}
-
- if ( sync->inserting_silence && (int64_t)(buf->start - sync->next_pts) > 0 )
+ if ( start - sync->next_pts >= (90 * 70) )
{
- /*
- * if we're within one frame time of the amount of silence
- * we need, insert just what we need otherwise insert a frame time.
- */
- int64_t framedur = buf->stop - buf->start;
- if ( buf->start - sync->next_pts <= framedur )
- {
- InsertSilence( w, i, buf->start - sync->next_pts );
- sync->inserting_silence = 0;
- }
- else
+ if ( start - sync->next_pts > (90000LL * 60) )
{
- InsertSilence( w, i, framedur );
+ // there's a gap of more than a minute between the last
+ // frame and this. assume we got a corrupted timestamp
+ // and just drop the next buf.
+ hb_log( "sync: %d minute time gap in audio %d - dropping buf"
+ " start %lld, next %lld",
+ (int)((start - sync->next_pts) / (90000*60)),
+ i, start, sync->next_pts );
+ buf = hb_fifo_get( audio->priv.fifo_raw );
+ hb_buffer_close( &buf );
+ continue;
}
- continue;
- }
- if ( buf->start - sync->next_pts >= (90 * 70) )
- {
/*
* there's a gap of at least 70ms between the last
* frame we processed & the next. Fill it with silence.
+ * Or in the case of DCA, skip some frames from the
+ * other streams.
*/
- if ( ! sync->inserting_silence )
+ if( sync->audio->config.out.codec == HB_ACODEC_DCA )
{
- hb_log( "sync: adding %d ms of silence to audio %d"
+ hb_log( "sync: audio gap %d ms. Skipping frames. Audio %d"
" start %lld, next %lld",
- (int)((buf->start - sync->next_pts) / 90),
- i, buf->start, sync->next_pts );
- sync->inserting_silence = 1;
+ (int)((start - sync->next_pts) / 90),
+ i, start, sync->next_pts );
+ pv->audio_passthru_slip += (start - sync->next_pts);
+ return;
}
- InsertSilence( w, i, buf->start - sync->next_pts );
- continue;
+ hb_log( "sync: adding %d ms of silence to audio %d"
+ " start %lld, next %lld",
+ (int)((start - sync->next_pts) / 90),
+ i, start, sync->next_pts );
+ InsertSilence( w, i, start - sync->next_pts );
+ return;
}
/*
buf = hb_fifo_get( audio->priv.fifo_raw );
OutputAudioFrame( job, audio, buf, sync, fifo, i );
}
-
- if( NeedSilence( w, audio, i ) )
- {
- InsertSilence( w, i, (90000 * AC3_SAMPLES_PER_FRAME) /
- sync->audio->config.in.samplerate );
- }
-}
-
-static int NeedSilence( hb_work_object_t * w, hb_audio_t * audio, int i )
-{
- hb_work_private_t * pv = w->private_data;
- hb_job_t * job = pv->job;
- hb_sync_audio_t * sync = &pv->sync_audio[i];
-
- if( hb_fifo_size( audio->priv.fifo_in ) ||
- hb_fifo_size( audio->priv.fifo_raw ) ||
- hb_fifo_size( audio->priv.fifo_sync ) ||
- hb_fifo_size( audio->priv.fifo_out ) )
- {
- /* We have some audio, we are fine */
- return 0;
- }
-
- /* No audio left in fifos */
-
- if( hb_thread_has_exited( job->reader ) )
- {
- /* We might miss some audio to complete encoding and muxing
- the video track */
- if ( sync->start_silence == 0 )
- {
- hb_log("sync: reader has exited, adding silence to audio %d", i);
- sync->start_silence = sync->next_pts;
- }
- return 1;
- }
- return 0;
}
static void InsertSilence( hb_work_object_t * w, int i, int64_t duration )