yv12config.h 2.72 KB
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/*
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 *  Copyright (c) 2010 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
 *  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 VPX_SCALE_YV12CONFIG_H_
#define VPX_SCALE_YV12CONFIG_H_
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#ifdef __cplusplus
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extern "C" {
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#endif

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#include "vpx/vpx_external_frame_buffer.h"
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#include "vpx/vpx_integer.h"

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#define VP8BORDERINPIXELS       32
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#define VP9INNERBORDERINPIXELS  96
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#define VP9BORDERINPIXELS      160
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#define VP9_INTERP_EXTEND        4
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  typedef struct yv12_buffer_config {
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    int   y_width;
    int   y_height;
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    int   y_crop_width;
    int   y_crop_height;
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    int   y_stride;
    /*    int   yinternal_width; */
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    int   uv_width;
    int   uv_height;
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    int   uv_crop_width;
    int   uv_crop_height;
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    int   uv_stride;
    /*    int   uvinternal_width; */
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    int   alpha_width;
    int   alpha_height;
    int   alpha_stride;

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    uint8_t *y_buffer;
    uint8_t *u_buffer;
    uint8_t *v_buffer;
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    uint8_t *alpha_buffer;
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    uint8_t *buffer_alloc;
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    int buffer_alloc_sz;
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    int border;
    int frame_size;
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    int corrupted;
    int flags;
  } YV12_BUFFER_CONFIG;
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  int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                                  int width, int height, int border);
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  int vp8_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                                    int width, int height, int border);
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  int vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
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  int vp9_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                             int width, int height, int ss_x, int ss_y,
                             int border);
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  // Updates the yv12 buffer config with the frame buffer. If ext_fb is not
  // NULL then libvpx is using external frame buffers. The function will
  // check if the frame buffer is big enough to fit the decoded frame and
  // try to reallocate the frame buffer. If ext_fb is not NULL and the frame
  // buffer is not big enough libvpx will call cb with minimum size in bytes.
  //
  // Returns 0 on success. Returns < 0 on failure.
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  int vp9_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
                               int width, int height, int ss_x, int ss_y,
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                               int border,
                               vpx_codec_frame_buffer_t *ext_fb,
                               vpx_realloc_frame_buffer_cb_fn_t cb,
                               void *user_priv);
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  int vp9_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);

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#ifdef __cplusplus
}
#endif

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#endif  // VPX_SCALE_YV12CONFIG_H_