diff options
| -rw-r--r-- | libhb/decdca.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/libhb/decdca.c b/libhb/decdca.c index b58a9ef79..9d1bde71c 100644 --- a/libhb/decdca.c +++ b/libhb/decdca.c @@ -15,6 +15,7 @@ struct hb_work_private_s dca_state_t * state; double next_pts; + int64_t last_buf_pts; int flags_in; int flags_out; int rate; @@ -122,6 +123,13 @@ static int decdcaWork( hb_work_object_t * w, hb_buffer_t ** buf_in, return HB_WORK_DONE; } + if ( (*buf_in)->start < -1 && pv->next_pts == 0 ) + { + // discard buffers that start before video time 0 + *buf_out = NULL; + return HB_WORK_OK; + } + hb_list_add( pv->list, *buf_in ); *buf_in = NULL; @@ -190,6 +198,17 @@ static hb_buffer_t * Decode( hb_work_object_t * w ) /* Get the whole frame */ hb_list_getbytes( pv->list, pv->frame, pv->size, &pts, &pos ); + if ( pts != pv->last_buf_pts ) + { + pv->last_buf_pts = pts; + } + else + { + // spec says that the PTS is the start time of the first frame + // that starts in the PES frame so we only use the PTS once then + // get the following frames' PTS from the frame length. + pts = -1; + } /* Feed libdca */ dca_frame( pv->state, pv->frame, &pv->flags_out, &pv->level, 0 ); @@ -207,12 +226,12 @@ static hb_buffer_t * Decode( hb_work_object_t * w ) // about time - timestamps seem to randomly offset by ~40ms for a few // seconds then recover. So, if the pts we got is within 50ms of the // pts computed from the data stream, use the data stream pts. - if ( pts < 0 || fabs( (double)pts - pv->next_pts ) < 50.*90. ) + if ( pts == -1 || ( pv->next_pts && fabs( pts - pv->next_pts ) < 50.*90. ) ) { pts = pv->next_pts; } buf->start = pts; - pv->next_pts += (double)nsamp / (double)pv->rate * 90000.; + pv->next_pts = pts + (double)nsamp / (double)pv->rate * 90000.; buf->stop = pv->next_pts; for( i = 0; i < num_blocks; i++ ) |