libvpx: Pull from upstream

source/libvpx/vp9/common/vp9_frame_buffers.h

Index: source/libvpx/vp9/common/vp9_frame_buffers.h
===================================================================
--- source/libvpx/vp9/common/vp9_frame_buffers.h	(revision 0)
+++ source/libvpx/vp9/common/vp9_frame_buffers.h	(revision 0)
@@ -0,0 +1,53 @@
+/*
+ *  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VP9_COMMON_VP9_FRAME_BUFFERS_H_
+#define VP9_COMMON_VP9_FRAME_BUFFERS_H_
+
+#include "vpx/vpx_frame_buffer.h"
+#include "vpx/vpx_integer.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct InternalFrameBuffer {
+  uint8_t *data;
+  size_t size;
+  int in_use;
+} InternalFrameBuffer;
+
+typedef struct InternalFrameBufferList {
+  int num_internal_frame_buffers;
+  InternalFrameBuffer *int_fb;
+} InternalFrameBufferList;
+
+// Initializes |list|. Returns 0 on success.
+int vp9_alloc_internal_frame_buffers(InternalFrameBufferList *list);
+
+// Free any data allocated to the frame buffers.
+void vp9_free_internal_frame_buffers(InternalFrameBufferList *list);
+
+// Callback used by libvpx to request an external frame buffer. |cb_priv|
+// Callback private data, which points to an InternalFrameBufferList.
+// |min_size| is the minimum size in bytes needed to decode the next frame.
+// |fb| pointer to the frame buffer.
+int vp9_get_frame_buffer(void *cb_priv, size_t min_size,
+                         vpx_codec_frame_buffer_t *fb);
+
+// Callback used by libvpx when there are no references to the frame buffer.
+// |cb_priv| is not used. |fb| pointer to the frame buffer.
+int vp9_release_frame_buffer(void *cb_priv, vpx_codec_frame_buffer_t *fb);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VP9_COMMON_VP9_FRAME_BUFFERS_H_