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audio/videodecoder: use gst_pad_peer_query_caps to make output caps

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gst_pad_get_allowed_caps() will return NULL if the srcpad has no peer.
In that case, use gst_pad_peer_query_caps() with template caps as filter
to have negotiated output caps properly before forwarding GAP event.

https://bugzilla.gnome.org/show_bug.cgi?id=761218
This commit is contained in:
HoonHee Lee 2016-01-28 18:06:44 +09:00 committed by Sebastian Dröge
parent 135c612550
commit 15df3c812b
2 changed files with 26 additions and 4 deletions
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15
gst-libs/gst/audio/gstaudiodecoder.c
View file

@ -1950,7 +1950,7 @@ gst_audio_decoder_do_byte (GstAudioDecoder * dec)
static gboolean
gst_audio_decoder_negotiate_default_caps (GstAudioDecoder * dec)
{
GstCaps *caps;
GstCaps *caps, *templcaps;
gint i;
gint channels = 0;
gint rate;
@ -1958,10 +1958,21 @@ gst_audio_decoder_negotiate_default_caps (GstAudioDecoder * dec)
gint caps_size;
GstStructure *structure;
caps = gst_pad_get_allowed_caps (dec->srcpad);
templcaps = gst_pad_get_pad_template_caps (dec->srcpad);
caps = gst_pad_peer_query_caps (dec->srcpad, templcaps);
if (caps) {
gst_caps_unref (templcaps);
templcaps = NULL;
} else {
caps = templcaps;
templcaps = NULL;
}
if (!caps || gst_caps_is_empty (caps) || gst_caps_is_any (caps))
goto caps_error;
GST_LOG_OBJECT (dec, "peer caps %" GST_PTR_FORMAT, caps);
/* before fixating, try to use whatever upstream provided */
caps = gst_caps_make_writable (caps);
caps_size = gst_caps_get_size (caps);

15
gst-libs/gst/video/gstvideodecoder.c
View file

@ -1089,17 +1089,28 @@ _flush_events (GstPad * pad, GList * events)
static gboolean
gst_video_decoder_negotiate_default_caps (GstVideoDecoder * decoder)
{
GstCaps *caps;
GstCaps *caps, *templcaps;
GstVideoCodecState *state;
GstVideoInfo info;
gint i;
gint caps_size;
GstStructure *structure;
caps = gst_pad_get_allowed_caps (decoder->srcpad);
templcaps = gst_pad_get_pad_template_caps (decoder->srcpad);
caps = gst_pad_peer_query_caps (decoder->srcpad, templcaps);
if (caps) {
gst_caps_unref (templcaps);
templcaps = NULL;
} else {
caps = templcaps;
templcaps = NULL;
}
if (!caps || gst_caps_is_empty (caps) || gst_caps_is_any (caps))
goto caps_error;
GST_LOG_OBJECT (decoder, "peer caps %" GST_PTR_FORMAT, caps);
/* before fixating, try to use whatever upstream provided */
caps = gst_caps_make_writable (caps);
caps_size = gst_caps_get_size (caps);