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v4l2: implement setup_allocation

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Implement the setup_allocation vmethod, we'll hopefully do something clever in
there later.
This commit is contained in:
Wim Taymans 2011-07-15 16:55:50 +02:00
parent 3eaecf3aed
commit 4440801ace
1 changed files with 24 additions and 1 deletions
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25
sys/v4l2/gstv4l2src.c
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@ -121,6 +121,8 @@ static gboolean gst_v4l2src_stop (GstBaseSrc * src);
static gboolean gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps);
static GstCaps *gst_v4l2src_get_caps (GstBaseSrc * src, GstCaps * filter);
static gboolean gst_v4l2src_query (GstBaseSrc * bsrc, GstQuery * query);
static gboolean gst_v4l2src_setup_allocation (GstBaseSrc * src,
GstQuery * query);
static GstFlowReturn gst_v4l2src_create (GstPushSrc * src, GstBuffer ** out);
static void gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps);
static gboolean gst_v4l2src_negotiate (GstBaseSrc * basesrc);
@ -193,6 +195,8 @@ gst_v4l2src_class_init (GstV4l2SrcClass * klass)
basesrc_class->query = GST_DEBUG_FUNCPTR (gst_v4l2src_query);
basesrc_class->fixate = GST_DEBUG_FUNCPTR (gst_v4l2src_fixate);
basesrc_class->negotiate = GST_DEBUG_FUNCPTR (gst_v4l2src_negotiate);
basesrc_class->setup_allocation =
GST_DEBUG_FUNCPTR (gst_v4l2src_setup_allocation);
pushsrc_class->create = GST_DEBUG_FUNCPTR (gst_v4l2src_create);
@ -530,11 +534,30 @@ gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps)
return TRUE;
}
static gboolean
gst_v4l2src_setup_allocation (GstBaseSrc * bsrc, GstQuery * query)
{
GstV4l2Src *src;
GstBufferPool *pool;
guint size, min, max, prefix, alignment;
src = GST_V4L2SRC (bsrc);
gst_query_parse_allocation_params (query, &size, &min, &max, &prefix,
&alignment, &pool);
/* do something clever here */
gst_query_set_allocation_params (query, size, min, max, prefix,
alignment, pool);
return TRUE;
}
static gboolean
gst_v4l2src_query (GstBaseSrc * bsrc, GstQuery * query)
{
GstV4l2Src *src;
gboolean res = FALSE;
src = GST_V4L2SRC (bsrc);