Function alignStream

libhb/sync.c:465–556

}

static void alignStream( sync_common_t * common, sync_stream_t * stream,
                         int64_t pts )
{
    if (hb_list_count(stream->in_queue) <= 0 ||
        stream->type == SYNC_TYPE_SUBTITLE)
    {
        return;
    }

    hb_buffer_t * buf = hb_list_item(stream->in_queue, 0);
    int64_t gap = buf->s.start - pts;

    if (gap == 0)
    {
        return;
    }
    if (gap < 0)
    {
        int ii;

        // Drop frames from other streams
        for (ii = 0; ii < common->stream_count; ii++)
        {
            sync_stream_t * other_stream = &common->streams[ii];
            if (stream == other_stream)
            {
                continue;
            }
            while (hb_list_count(other_stream->in_queue) > 0)
            {
                buf = hb_list_item(other_stream->in_queue, 0);
                if (buf->s.start < pts)
                {
                    if (other_stream->type == SYNC_TYPE_SUBTITLE &&
                        buf->s.stop > pts)
                    {
                        // Subtitle ends after start time, keep sub and
                        // adjust it's start time
                        buf->s.start = pts;
                        break;
                    }
                    else
                    {
                        hb_list_rem(other_stream->in_queue, buf);
                        hb_buffer_close(&buf);
                    }
                }
                else
                {
                    // Fill the partial frame gap left after dropping frames
                    alignStream(common, other_stream, pts);
                    break;
                }
            }
        }
    }
    else
    {