frame_buffers.h - mozsearch

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/*

 * Copyright (c) 2016, Alliance for Open Media. All rights reserved.

 * This source code is subject to the terms of the BSD 2 Clause License and

 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License

 * was not distributed with this source code in the LICENSE file, you can

 * obtain it at www.aomedia.org/license/software. If the Alliance for Open

 * Media Patent License 1.0 was not distributed with this source code in the

 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.

*/

#ifndef AOM_AV1_COMMON_FRAME_BUFFERS_H_

#define AOM_AV1_COMMON_FRAME_BUFFERS_H_

#include "aom/aom_frame_buffer.h"

#include "aom/aom_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 av1_alloc_internal_frame_buffers(InternalFrameBufferList *list);

// Free any data allocated to the frame buffers.

void av1_free_internal_frame_buffers(InternalFrameBufferList *list);

// Zeros all unused internal frame buffers. In particular, this zeros the

// frame borders. Call this function after a sequence header change to

// re-initialize the frame borders for the different width, height, or bit

// depth.

void av1_zero_unused_internal_frame_buffers(InternalFrameBufferList *list);

// Callback used by libaom 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 av1_get_frame_buffer(void *cb_priv, size_t min_size,

                         aom_codec_frame_buffer_t *fb);

// Callback used by libaom when there are no references to the frame buffer.

// |cb_priv| is not used. |fb| pointer to the frame buffer.

int av1_release_frame_buffer(void *cb_priv, aom_codec_frame_buffer_t *fb);

#ifdef __cplusplus

}  // extern "C"

#endif

#endif  // AOM_AV1_COMMON_FRAME_BUFFERS_H_