+ hb_list_getbytes( pv->list, pv->frame, pv->size, &upts, &upos );
+ pts = (int64_t)upts;
+ pos = (int64_t)upos;
+
+ 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;
+ }
+
+ // mkv files typically use a 1ms timebase which results in a lot of
+ // truncation error in their timestamps. Also, TSMuxer or something
+ // in the m2ts-to-mkv toolchain seems to take a very casual attitude
+ // 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 == -1 || ( pv->next_pts && fabs( pts - pv->next_pts ) < 50.*90. ) )
+ {
+ pts = pv->next_pts;
+ }
+
+ double frame_dur = (double)(pv->frame_length & ~0xFF) / (double)pv->rate * 90000.;
+
+ /* DCA passthrough: don't decode the DCA frame */
+ if( audio->config.out.codec == HB_ACODEC_DCA )
+ {
+ buf = hb_buffer_init( pv->size );
+ memcpy( buf->data, pv->frame, pv->size );
+ buf->start = pts;
+ pv->next_pts = pts + frame_dur;
+ buf->stop = pv->next_pts;
+ pv->sync = 0;
+ return buf;
+ }