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ffmpegdec: Report latency if B-frames are present

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... and cleanup the query handler while we're at it

https://bugzilla.gnome.org/show_bug.cgi?id=663616
This commit is contained in:
Edward Hervey 2011-11-08 18:56:54 +01:00
parent dcd387b313
commit 15ae52392e
1 changed files with 35 additions and 24 deletions
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59
ext/ffmpeg/gstffmpegdec.c
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@ -477,35 +477,43 @@ static gboolean
gst_ffmpegdec_query (GstPad * pad, GstQuery * query)
{
GstFFMpegDec *ffmpegdec;
GstPad *peer;
gboolean res;
gboolean res = FALSE;
ffmpegdec = (GstFFMpegDec *) gst_pad_get_parent (pad);
res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
GST_DEBUG_OBJECT (ffmpegdec, "latency query %d",
ffmpegdec->context->has_b_frames);
if ((res = gst_pad_peer_query (ffmpegdec->sinkpad, query))) {
if (ffmpegdec->context->has_b_frames) {
gboolean live;
GstClockTime min_lat, max_lat, our_lat;
if ((peer = gst_pad_get_peer (ffmpegdec->sinkpad))) {
/* just forward to peer */
res = gst_pad_query (peer, query);
gst_object_unref (peer);
gst_query_parse_latency (query, &live, &min_lat, &max_lat);
if (ffmpegdec->format.video.fps_n > 0)
our_lat =
gst_util_uint64_scale_int (ffmpegdec->context->has_b_frames *
GST_SECOND, ffmpegdec->format.video.fps_d,
ffmpegdec->format.video.fps_n);
else
our_lat =
gst_util_uint64_scale_int (ffmpegdec->context->has_b_frames *
GST_SECOND, 1, 25);
if (min_lat != -1)
min_lat += our_lat;
if (max_lat != -1)
max_lat += our_lat;
gst_query_set_latency (query, live, min_lat, max_lat);
}
}
}
break;
default:
res = gst_pad_query_default (pad, query);
break;
}
#if 0
{
GstFormat bfmt;
bfmt = GST_FORMAT_BYTES;
/* ok, do bitrate calc... */
if ((type != GST_QUERY_POSITION && type != GST_QUERY_TOTAL) ||
*fmt != GST_FORMAT_TIME || ffmpegdec->context->bit_rate == 0 ||
!gst_pad_query (peer, type, &bfmt, value))
return FALSE;
if (ffmpegdec->pcache && type == GST_QUERY_POSITION)
*value -= GST_BUFFER_SIZE (ffmpegdec->pcache);
*value *= GST_SECOND / ffmpegdec->context->bit_rate;
}
#endif
gst_object_unref (ffmpegdec);
@ -1546,6 +1554,9 @@ check_keyframe (GstFFMpegDec * ffmpegdec)
if (!ffmpegdec->has_b_frames && ffmpegdec->picture->pict_type == FF_B_TYPE) {
GST_DEBUG_OBJECT (ffmpegdec, "we have B frames");
ffmpegdec->has_b_frames = TRUE;
/* Emit latency message to recalculate it */
gst_element_post_message (GST_ELEMENT_CAST (ffmpegdec),
gst_message_new_latency (GST_OBJECT_CAST (ffmpegdec)));
}
is_itype = (ffmpegdec->picture->pict_type == FF_I_TYPE);