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assrender: Proxy buffer allocation on video sinkpad to the srcpad

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...and add getcaps function to the video sinkpad.
This commit is contained in:
Sebastian Dröge 2009-12-09 09:55:32 +01:00
parent 44aba00375
commit 876cfb3d26
1 changed files with 30 additions and 0 deletions
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30
ext/assrender/gstassrender.c
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@ -107,6 +107,9 @@ static gboolean gst_ass_render_event_video (GstPad * pad, GstEvent * event);
static gboolean gst_ass_render_event_text (GstPad * pad, GstEvent * event);
static gboolean gst_ass_render_event_src (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_ass_render_bufferalloc_video (GstPad * pad,
guint64 offset, guint size, GstCaps * caps, GstBuffer ** buffer);
static void
gst_ass_render_base_init (gpointer gclass)
{
@ -190,6 +193,8 @@ gst_ass_render_init (GstAssRender * render, GstAssRenderClass * gclass)
gst_pad_set_getcaps_function (render->srcpad,
GST_DEBUG_FUNCPTR (gst_ass_render_getcaps));
gst_pad_set_getcaps_function (render->video_sinkpad,
GST_DEBUG_FUNCPTR (gst_ass_render_getcaps));
gst_pad_set_chain_function (render->video_sinkpad,
GST_DEBUG_FUNCPTR (gst_ass_render_chain_video));
@ -203,6 +208,9 @@ gst_ass_render_init (GstAssRender * render, GstAssRenderClass * gclass)
gst_pad_set_event_function (render->srcpad,
GST_DEBUG_FUNCPTR (gst_ass_render_event_src));
gst_pad_set_bufferalloc_function (render->video_sinkpad,
GST_DEBUG_FUNCPTR (gst_ass_render_bufferalloc_video));
gst_element_add_pad (GST_ELEMENT (render), render->srcpad);
gst_element_add_pad (GST_ELEMENT (render), render->video_sinkpad);
gst_element_add_pad (GST_ELEMENT (render), render->text_sinkpad);
@ -858,6 +866,28 @@ gst_ass_render_process_text (GstAssRender * render, GstBuffer * buffer,
gst_buffer_unref (buffer);
}
static GstFlowReturn
gst_ass_render_bufferalloc_video (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buffer)
{
GstAssRender *render = GST_ASS_RENDER (gst_pad_get_parent (pad));
GstFlowReturn ret = GST_FLOW_WRONG_STATE;
GstPad *allocpad;
GST_OBJECT_LOCK (render);
allocpad = render->srcpad ? gst_object_ref (render->srcpad) : NULL;
GST_OBJECT_UNLOCK (render);
if (allocpad) {
ret = gst_pad_alloc_buffer (allocpad, offset, size, caps, buffer);
gst_object_unref (allocpad);
}
gst_object_unref (render);
return ret;
}
static GstFlowReturn
gst_ass_render_chain_video (GstPad * pad, GstBuffer * buffer)
{