yv12config.h 3.13 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_config.h"
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#include "vpx/vpx_codec.h"
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#include "vpx/vpx_frame_buffer.h"
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#include "vpx/vpx_integer.h"

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#define VP8BORDERINPIXELS           32
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#define VPXINNERBORDERINPIXELS      96
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#define VPX_INTERP_EXTEND           4
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#define VPX_ENC_BORDER_IN_PIXELS    160
#define VPX_DEC_BORDER_IN_PIXELS    32
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typedef struct yv12_buffer_config {
  int   y_width;
  int   y_height;
  int   y_crop_width;
  int   y_crop_height;
  int   y_stride;
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  int   uv_width;
  int   uv_height;
  int   uv_crop_width;
  int   uv_crop_height;
  int   uv_stride;
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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;
  uint8_t *alpha_buffer;
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  uint8_t *buffer_alloc;
  int buffer_alloc_sz;
  int border;
  int frame_size;
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  int subsampling_x;
  int subsampling_y;
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  unsigned int bit_depth;
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  vpx_color_space_t color_space;
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  vpx_color_range_t color_range;
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  int render_width;
  int render_height;
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  int corrupted;
  int flags;
} YV12_BUFFER_CONFIG;
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#define YV12_FLAG_HIGHBITDEPTH 8
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int vpx_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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                                int width, int height, int border);
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int vpx_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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                                  int width, int height, int border);
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int vpx_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
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int vpx_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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                           int width, int height, int ss_x, int ss_y,
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#if CONFIG_VPX_HIGHBITDEPTH
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                           int use_highbitdepth,
#endif
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                           int border, int byte_alignment);
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// Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
// be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
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// NULL, then libvpx is using the frame buffer callbacks to handle memory.
// If cb is not NULL, libvpx will call cb with minimum size in bytes needed
// to decode the current frame. If cb is NULL, libvpx will allocate memory
// internally to decode the current frame. Returns 0 on success. Returns < 0
// on failure.
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int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
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                             int width, int height, int ss_x, int ss_y,
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#if CONFIG_VPX_HIGHBITDEPTH
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                             int use_highbitdepth,
#endif
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                             int border,
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                             int byte_alignment,
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                             vpx_codec_frame_buffer_t *fb,
                             vpx_get_frame_buffer_cb_fn_t cb,
                             void *cb_priv);
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int vpx_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
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#ifdef __cplusplus
}
#endif

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#endif  // VPX_SCALE_YV12CONFIG_H_