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openni2src: Fix negotiation and creation of a video buffer pool

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This commit is contained in:
Sebastian Dröge 2013-12-03 14:35:21 +01:00
parent 034757e936
commit 04e8d63597
1 changed files with 49 additions and 0 deletions
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49
ext/openni2/gstopenni2src.cpp
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@ -97,6 +97,8 @@ static void gst_openni2_src_get_property (GObject * object, guint prop_id,
static gboolean gst_openni2_src_start (GstBaseSrc * bsrc);
static gboolean gst_openni2_src_stop (GstBaseSrc * bsrc);
static GstCaps *gst_openni2_src_get_caps (GstBaseSrc * src, GstCaps * filter);
static gboolean gst_openni2src_decide_allocation (GstBaseSrc * bsrc,
GstQuery * query);
/* element methods */
static GstStateChangeReturn gst_openni2_src_change_state (GstElement * element,
@ -147,6 +149,8 @@ gst_openni2_src_class_init (GstOpenni2SrcClass * klass)
basesrc_class->start = GST_DEBUG_FUNCPTR (gst_openni2_src_start);
basesrc_class->stop = GST_DEBUG_FUNCPTR (gst_openni2_src_stop);
basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_openni2_src_get_caps);
basesrc_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_openni2src_decide_allocation);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&srctemplate));
@ -331,8 +335,11 @@ gst_openni2_src_get_caps (GstBaseSrc * src, GstCaps * filter)
format = GST_VIDEO_FORMAT_GRAY16_LE;
} else if (ni2src->color.isValid () && ni2src->sourcetype == SOURCETYPE_COLOR) {
format = GST_VIDEO_FORMAT_RGB;
} else {
return gst_caps_new_empty ();
}
gst_video_info_init (&info);
gst_video_info_set_format (&info, format, ni2src->width, ni2src->height);
info.fps_n = ni2src->fps;
info.fps_d = 1;
@ -399,6 +406,48 @@ gst_openni2src_fill (GstPushSrc * src, GstBuffer * buf)
return openni2_read_gstbuffer (ni2src, buf);
}
static gboolean
gst_openni2src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
{
GstBufferPool *pool;
guint size, min, max;
gboolean update;
GstStructure *config;
GstCaps *caps;
GstVideoInfo info;
gst_query_parse_allocation (query, &caps, NULL);
gst_video_info_from_caps (&info, caps);
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
update = TRUE;
} else {
pool = NULL;
min = max = 0;
size = info.size;
update = FALSE;
}
GST_DEBUG_OBJECT (bsrc, "allocation: size:%u min:%u max:%u pool:%"
GST_PTR_FORMAT " caps:%" GST_PTR_FORMAT, size, min, max, pool, caps);
if (!pool)
pool = gst_video_buffer_pool_new ();
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_set_config (pool, config);
if (update)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
return GST_BASE_SRC_CLASS (parent_class)->decide_allocation (bsrc, query);
}
gboolean
gst_openni2src_plugin_init (GstPlugin * plugin)
{