commit e6c2ad5571e5dedb212287efe238eb450032cd4f
author Benjamin Gaignard <benjamin.gaignard@linaro.org> Fri Nov 21 16:36:15 2014 +0100
committer Nicolas Dufresne <nicolas.dufresne@collabora.co.uk> Fri Nov 21 11:29:04 2014 -0500
tree 2c6f24c3ee473fe802471ff43c2232d3f8dd4e57
parent ec6b8b84af719d828ddd91c724e715c0b4a556bc

v4l2object: allow to automatic selection of dmabuf

If the v4l2 queue support dmabuf select this buffer pool mode
and update the query with allocator.
This patch only concern exporting dmabuf and not importing dmabuf
fd from downstream element.

https://bugzilla.gnome.org/show_bug.cgi?id=699382

sys/v4l2/gstv4l2bufferpool.c

diff --git a/sys/v4l2/gstv4l2bufferpool.c b/sys/v4l2/gstv4l2bufferpool.c
index 2019072..2ea9eb5 100644
--- a/sys/v4l2/gstv4l2bufferpool.c
+++ b/sys/v4l2/gstv4l2bufferpool.c
@@ -517,6 +517,8 @@
     gst_buffer_pool_config_set_params (config, caps, size, min_buffers,
         max_buffers);
 
+  gst_buffer_pool_config_set_allocator (config, pool->allocator, &params);
+
   /* keep a GstVideoInfo with defaults for the when we need to copy */
   gst_video_info_from_caps (&pool->caps_info, caps);
 

sys/v4l2/gstv4l2object.c

diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c
index d70b53d..9746243 100644
--- a/sys/v4l2/gstv4l2object.c
+++ b/sys/v4l2/gstv4l2object.c
@@ -2362,8 +2362,12 @@
     goto method_not_supported;
 
   if (v4l2object->vcap.capabilities & V4L2_CAP_STREAMING) {
-    if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
-      mode = GST_V4L2_IO_MMAP;
+    if (v4l2object->req_mode == GST_V4L2_IO_AUTO) {
+      if (GST_V4L2_OBJECT_CAN_REQUEST (v4l2object, DMABUF))
+        mode = GST_V4L2_IO_DMABUF;
+      else
+        mode = GST_V4L2_IO_MMAP;
+    }
   } else if (v4l2object->req_mode == GST_V4L2_IO_MMAP)
     goto method_not_supported;