e8e152799b
This CL changes libvpx to call a function when a frame buffer is needed for decode. Libvpx will call a release callback when no other frames reference the frame buffer. This CL adds a default implementation of the frame buffer callbacks. Currently only VP9 is supported. A future CL will add support for applications to supply their own frame buffer callbacks. Change-Id: I1405a320118f1cdd95f80c670d52b085a62cb10d
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_COMMON_VP9_FRAME_BUFFERS_H_
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#define VP9_COMMON_VP9_FRAME_BUFFERS_H_
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#include "vpx/vpx_frame_buffer.h"
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#include "vpx/vpx_integer.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct InternalFrameBuffer {
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uint8_t *data;
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size_t size;
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int in_use;
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} InternalFrameBuffer;
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typedef struct InternalFrameBufferList {
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int num_internal_frame_buffers;
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InternalFrameBuffer *int_fb;
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} InternalFrameBufferList;
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// Initializes |list|. Returns 0 on success.
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int vp9_alloc_internal_frame_buffers(InternalFrameBufferList *list);
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// Free any data allocated to the frame buffers.
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void vp9_free_internal_frame_buffers(InternalFrameBufferList *list);
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// Callback used by libvpx to request an external frame buffer. |cb_priv|
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// Callback private data, which points to an InternalFrameBufferList.
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// |min_size| is the minimum size in bytes needed to decode the next frame.
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// |fb| pointer to the frame buffer.
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int vp9_get_frame_buffer(void *cb_priv, size_t min_size,
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vpx_codec_frame_buffer_t *fb);
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// Callback used by libvpx when there are no references to the frame buffer.
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// |cb_priv| is not used. |fb| pointer to the frame buffer.
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int vp9_release_frame_buffer(void *cb_priv, vpx_codec_frame_buffer_t *fb);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_COMMON_VP9_FRAME_BUFFERS_H_
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