1 /*
2  *  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef VP9_COMMON_VP9_FRAME_BUFFERS_H_
12 #define VP9_COMMON_VP9_FRAME_BUFFERS_H_
13 
14 #include "vpx/vpx_frame_buffer.h"
15 #include "vpx/vpx_integer.h"
16 
17 #ifdef __cplusplus
18 extern "C" {
19 #endif
20 
21 typedef struct InternalFrameBuffer {
22   uint8_t *data;
23   size_t size;
24   int in_use;
25 } InternalFrameBuffer;
26 
27 typedef struct InternalFrameBufferList {
28   int num_internal_frame_buffers;
29   InternalFrameBuffer *int_fb;
30 } InternalFrameBufferList;
31 
32 // Initializes |list|. Returns 0 on success.
33 int vp9_alloc_internal_frame_buffers(InternalFrameBufferList *list);
34 
35 // Free any data allocated to the frame buffers.
36 void vp9_free_internal_frame_buffers(InternalFrameBufferList *list);
37 
38 // Callback used by libvpx to request an external frame buffer. |cb_priv|
39 // Callback private data, which points to an InternalFrameBufferList.
40 // |min_size| is the minimum size in bytes needed to decode the next frame.
41 // |fb| pointer to the frame buffer.
42 int vp9_get_frame_buffer(void *cb_priv, size_t min_size,
43                          vpx_codec_frame_buffer_t *fb);
44 
45 // Callback used by libvpx when there are no references to the frame buffer.
46 // |cb_priv| is not used. |fb| pointer to the frame buffer.
47 int vp9_release_frame_buffer(void *cb_priv, vpx_codec_frame_buffer_t *fb);
48 
49 #ifdef __cplusplus
50 }  // extern "C"
51 #endif
52 
53 #endif  // VP9_COMMON_VP9_FRAME_BUFFERS_H_
54