plugins: add support for dma_buf exports (v4l2src).

Allow v4l2src element to connected to vaapipostproc or vaapisink when
"io-mode" is set to "dmabuf-import". In practice, this is a more likely
operational mode with uvcvideo. Supporting v4lsrc with "io-mode" set
to "dmabuf" could work, but with more demanding driver or kernel reqs.

Note: with GStreamer 1.4, v4l2src (gst-plugins-good) needs to be built
with --without-libv4l2.

https://bugzilla.gnome.org/show_bug.cgi?id=743635

1 files changed, 33 insertions, 0 deletions

diff --git a/gst/vaapi/gstvaapivideomemory.h b/gst/vaapi/gstvaapivideomemory.h
index ba29564a..d3c6151a 100644
--- a/gst/vaapi/gstvaapivideomemory.h
+++ b/gst/vaapi/gstvaapivideomemory.h
@@ -28,6 +28,9 @@
 #include <gst/vaapi/gstvaapidisplay.h>
 #include <gst/vaapi/gstvaapivideopool.h>
 #include "gstvaapivideometa.h"
+#if GST_CHECK_VERSION(1,1,0)
+#include <gst/allocators/allocators.h>
+#endif
 
 G_BEGIN_DECLS
 
@@ -114,6 +117,10 @@ struct _GstVaapiVideoMemory
 };
 
 G_GNUC_INTERNAL
+GQuark
+gst_vaapi_video_memory_quark_get (void);
+
+G_GNUC_INTERNAL
 GstMemory *
 gst_vaapi_video_memory_new (GstAllocator * allocator, GstVaapiVideoMeta * meta);
 
@@ -189,6 +196,32 @@ GstAllocator *
 gst_vaapi_video_allocator_new (GstVaapiDisplay * display,
     const GstVideoInfo * vip, guint flags);
 
+/* ------------------------------------------------------------------------ */
+/* --- GstVaapiDmaBufMemory                                             --- */
+/* ------------------------------------------------------------------------ */
+
+G_GNUC_INTERNAL
+GstMemory *
+gst_vaapi_dmabuf_memory_new (GstAllocator * allocator,
+    GstVaapiVideoMeta * meta);
+
+/* ------------------------------------------------------------------------ */
+/* --- GstVaapiDmaBufAllocator                                          --- */
+/* ------------------------------------------------------------------------ */
+
+G_GNUC_INTERNAL
+GstAllocator *
+gst_vaapi_dmabuf_allocator_new (GstVaapiDisplay * display,
+    const GstVideoInfo * vip, guint flags);
+
+const GstVideoInfo *
+gst_allocator_get_vaapi_video_info (GstAllocator * allocator,
+    guint * out_flags_ptr);
+
+gboolean
+gst_allocator_set_vaapi_video_info (GstAllocator * allocator,
+    const GstVideoInfo * vip, guint flags);
+
 G_END_DECLS
 
 #endif /* GST_VAAPI_VIDEO_MEMORY_H */