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v4l2videodec: Proxy getcaps

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Replace the sink_query with new getcaps() virtual and use the proxy
helper with the probed caps. This allow upstream element taking decision
base on what is supported downstream.
This commit is contained in:
Nicolas Dufresne 2015-01-13 16:49:34 -05:00
parent dc2251a664
commit f3f4bdd676
1 changed files with 9 additions and 34 deletions
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43
sys/v4l2/gstv4l2videodec.c
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@ -670,43 +670,18 @@ gst_v4l2_video_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
return ret;
}
static gboolean
gst_v4l2_video_dec_sink_query (GstVideoDecoder * decoder, GstQuery * query)
static GstCaps *
gst_v4l2_video_dec_sink_getcaps (GstVideoDecoder * decoder, GstCaps * filter)
{
gboolean ret = TRUE;
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
GstCaps *result;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:{
GstCaps *filter, *result = NULL;
GstPad *pad = GST_VIDEO_DECODER_SINK_PAD (decoder);
gst_query_parse_caps (query, &filter);
result = gst_video_decoder_proxy_getcaps (decoder, self->probed_sinkcaps,
filter);
if (self->probed_sinkcaps)
result = gst_caps_ref (self->probed_sinkcaps);
else
result = gst_pad_get_pad_template_caps (pad);
GST_DEBUG_OBJECT (self, "Returning sink caps %" GST_PTR_FORMAT, result);
if (filter) {
GstCaps *tmp = result;
result =
gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (tmp);
}
GST_DEBUG_OBJECT (self, "Returning sink caps %" GST_PTR_FORMAT, result);
gst_query_set_caps_result (query, result);
gst_caps_unref (result);
break;
}
default:
ret = GST_VIDEO_DECODER_CLASS (parent_class)->sink_query (decoder, query);
break;
}
return ret;
return result;
}
static gboolean
@ -851,8 +826,8 @@ gst_v4l2_video_dec_class_init (GstV4l2VideoDecClass * klass)
/* FIXME propose_allocation or not ? */
video_decoder_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_handle_frame);
video_decoder_class->sink_query =
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_sink_query);
video_decoder_class->getcaps =
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_sink_getcaps);
video_decoder_class->src_query =
GST_DEBUG_FUNCPTR (gst_v4l2_video_dec_src_query);
video_decoder_class->sink_event =