From 4440801ace8533d7e6a092c10ff974b2abf1065c Mon Sep 17 00:00:00 2001
From: Wim Taymans <wim.taymans@collabora.co.uk>
Date: Fri, 15 Jul 2011 16:55:50 +0200
Subject: [PATCH] v4l2: implement setup_allocation

Implement the setup_allocation vmethod, we'll hopefully do something clever in
there later.
---
 sys/v4l2/gstv4l2src.c | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/sys/v4l2/gstv4l2src.c b/sys/v4l2/gstv4l2src.c
index dac2d6a711..d4e159bafc 100644
--- a/sys/v4l2/gstv4l2src.c
+++ b/sys/v4l2/gstv4l2src.c
@@ -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);