vpx_image.h

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/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */
 
#ifndef VPX_VPX_VPX_IMAGE_H_
#define VPX_VPX_VPX_IMAGE_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define VPX_IMAGE_ABI_VERSION (5) 
#define VPX_IMG_FMT_PLANAR 0x100       
#define VPX_IMG_FMT_UV_FLIP 0x200      
#define VPX_IMG_FMT_HAS_ALPHA 0x400    
#define VPX_IMG_FMT_HIGHBITDEPTH 0x800 
typedef enum vpx_img_fmt {
  VPX_IMG_FMT_NONE,
  VPX_IMG_FMT_YV12 =
      VPX_IMG_FMT_PLANAR | VPX_IMG_FMT_UV_FLIP | 1, 
  VPX_IMG_FMT_I420 = VPX_IMG_FMT_PLANAR | 2,
  VPX_IMG_FMT_I422 = VPX_IMG_FMT_PLANAR | 5,
  VPX_IMG_FMT_I444 = VPX_IMG_FMT_PLANAR | 6,
  VPX_IMG_FMT_I440 = VPX_IMG_FMT_PLANAR | 7,
  VPX_IMG_FMT_NV12 = VPX_IMG_FMT_PLANAR | 9,
  VPX_IMG_FMT_I42016 = VPX_IMG_FMT_I420 | VPX_IMG_FMT_HIGHBITDEPTH,
  VPX_IMG_FMT_I42216 = VPX_IMG_FMT_I422 | VPX_IMG_FMT_HIGHBITDEPTH,
  VPX_IMG_FMT_I44416 = VPX_IMG_FMT_I444 | VPX_IMG_FMT_HIGHBITDEPTH,
  VPX_IMG_FMT_I44016 = VPX_IMG_FMT_I440 | VPX_IMG_FMT_HIGHBITDEPTH
} vpx_img_fmt_t; 
typedef enum vpx_color_space {
  VPX_CS_UNKNOWN = 0,   
  VPX_CS_BT_601 = 1,    
  VPX_CS_BT_709 = 2,    
  VPX_CS_SMPTE_170 = 3, 
  VPX_CS_SMPTE_240 = 4, 
  VPX_CS_BT_2020 = 5,   
  VPX_CS_RESERVED = 6,  
  VPX_CS_SRGB = 7       
} vpx_color_space_t;    
typedef enum vpx_color_range {
  VPX_CR_STUDIO_RANGE = 0, 
  VPX_CR_FULL_RANGE = 1    
} vpx_color_range_t;       
typedef struct vpx_image {
  vpx_img_fmt_t fmt;       
  vpx_color_space_t cs;    
  vpx_color_range_t range; 
  /* Image storage dimensions */
  unsigned int w;         
  unsigned int h;         
  unsigned int bit_depth; 
  /* Image display dimensions */
  unsigned int d_w; 
  unsigned int d_h; 
  /* Image intended rendering dimensions */
  unsigned int r_w; 
  unsigned int r_h; 
  /* Chroma subsampling info */
  unsigned int x_chroma_shift; 
  unsigned int y_chroma_shift; 
/* Image data pointers. */
#define VPX_PLANE_PACKED 0  
#define VPX_PLANE_Y 0       
#define VPX_PLANE_U 1       
#define VPX_PLANE_V 2       
#define VPX_PLANE_ALPHA 3   
  unsigned char *planes[4]; 
  int stride[4];            
  int bps; 
  void *user_priv;
 
  /* The following members should be treated as private. */
  unsigned char *img_data; 
  int img_data_owner;      
  int self_allocd;         
  void *fb_priv; 
} vpx_image_t;   
typedef struct vpx_image_rect {
  unsigned int x;   
  unsigned int y;   
  unsigned int w;   
  unsigned int h;   
} vpx_image_rect_t; 
vpx_image_t *vpx_img_alloc(vpx_image_t *img, vpx_img_fmt_t fmt,
                           unsigned int d_w, unsigned int d_h,
                           unsigned int align);
 
vpx_image_t *vpx_img_wrap(vpx_image_t *img, vpx_img_fmt_t fmt, unsigned int d_w,
                          unsigned int d_h, unsigned int stride_align,
                          unsigned char *img_data);
 
int vpx_img_set_rect(vpx_image_t *img, unsigned int x, unsigned int y,
                     unsigned int w, unsigned int h);
 
void vpx_img_flip(vpx_image_t *img);
 
void vpx_img_free(vpx_image_t *img);
 
#ifdef __cplusplus
}  // extern "C"
#endif
 
#endif  // VPX_VPX_VPX_IMAGE_H_