libvpx: Add VP9 decoder.

source/libvpx/vpx/vpx_image.h

 /*
  *  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.
  */
 
 
 /*!\file
  * \brief Describes the vpx image descriptor and associated operations
  *
  */
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #ifndef VPX_IMAGE_H
 #define VPX_IMAGE_H
 
-    /*!\brief Current ABI version number
-     *
-     * \internal
-     * If this file is altered in any way that changes the ABI, this value
-     * must be bumped.  Examples include, but are not limited to, changing
-     * types, removing or reassigning enums, adding/removing/rearranging
-     * fields to structures
-     */
+  /*!\brief Current ABI version number
+   *
+   * \internal
+   * If this file is altered in any way that changes the ABI, this value
+   * must be bumped.  Examples include, but are not limited to, changing
+   * types, removing or reassigning enums, adding/removing/rearranging
+   * fields to structures
+   */
 #define VPX_IMAGE_ABI_VERSION (1) /**<\hideinitializer*/
 
 
 #define VPX_IMG_FMT_PLANAR     0x100  /**< Image is a planar format */
 #define VPX_IMG_FMT_UV_FLIP    0x200  /**< V plane precedes U plane in memory */
 #define VPX_IMG_FMT_HAS_ALPHA  0x400  /**< Image has an alpha channel component */
 
 
-    /*!\brief List of supported image formats */
-    typedef enum vpx_img_fmt {
-        VPX_IMG_FMT_NONE,
-        VPX_IMG_FMT_RGB24,   /**< 24 bit per pixel packed RGB */
-        VPX_IMG_FMT_RGB32,   /**< 32 bit per pixel packed 0RGB */
-        VPX_IMG_FMT_RGB565,  /**< 16 bit per pixel, 565 */
-        VPX_IMG_FMT_RGB555,  /**< 16 bit per pixel, 555 */
-        VPX_IMG_FMT_UYVY,    /**< UYVY packed YUV */
-        VPX_IMG_FMT_YUY2,    /**< YUYV packed YUV */
-        VPX_IMG_FMT_YVYU,    /**< YVYU packed YUV */
-        VPX_IMG_FMT_BGR24,   /**< 24 bit per pixel packed BGR */
-        VPX_IMG_FMT_RGB32_LE, /**< 32 bit packed BGR0 */
-        VPX_IMG_FMT_ARGB,     /**< 32 bit packed ARGB, alpha=255 */
-        VPX_IMG_FMT_ARGB_LE,  /**< 32 bit packed BGRA, alpha=255 */
-        VPX_IMG_FMT_RGB565_LE,  /**< 16 bit per pixel, gggbbbbb rrrrrggg */
-        VPX_IMG_FMT_RGB555_LE,  /**< 16 bit per pixel, gggbbbbb 0rrrrrgg */
-        VPX_IMG_FMT_YV12    = VPX_IMG_FMT_PLANAR | VPX_IMG_FMT_UV_FLIP | 1, /**< planar YVU */
-        VPX_IMG_FMT_I420    = VPX_IMG_FMT_PLANAR | 2,
-        VPX_IMG_FMT_VPXYV12 = VPX_IMG_FMT_PLANAR | VPX_IMG_FMT_UV_FLIP | 3, /** < planar 4:2:0 format with vpx color space */
-        VPX_IMG_FMT_VPXI420 = VPX_IMG_FMT_PLANAR | 4   /** < planar 4:2:0 format with vpx color space */
-    }
-    vpx_img_fmt_t; /**< alias for enum vpx_img_fmt */
+  /*!\brief List of supported image formats */
+  typedef enum vpx_img_fmt {
+    VPX_IMG_FMT_NONE,
+    VPX_IMG_FMT_RGB24,   /**< 24 bit per pixel packed RGB */
+    VPX_IMG_FMT_RGB32,   /**< 32 bit per pixel packed 0RGB */
+    VPX_IMG_FMT_RGB565,  /**< 16 bit per pixel, 565 */
+    VPX_IMG_FMT_RGB555,  /**< 16 bit per pixel, 555 */
+    VPX_IMG_FMT_UYVY,    /**< UYVY packed YUV */
+    VPX_IMG_FMT_YUY2,    /**< YUYV packed YUV */
+    VPX_IMG_FMT_YVYU,    /**< YVYU packed YUV */
+    VPX_IMG_FMT_BGR24,   /**< 24 bit per pixel packed BGR */
+    VPX_IMG_FMT_RGB32_LE, /**< 32 bit packed BGR0 */
+    VPX_IMG_FMT_ARGB,     /**< 32 bit packed ARGB, alpha=255 */
+    VPX_IMG_FMT_ARGB_LE,  /**< 32 bit packed BGRA, alpha=255 */
+    VPX_IMG_FMT_RGB565_LE,  /**< 16 bit per pixel, gggbbbbb rrrrrggg */
+    VPX_IMG_FMT_RGB555_LE,  /**< 16 bit per pixel, gggbbbbb 0rrrrrgg */
+    VPX_IMG_FMT_YV12    = VPX_IMG_FMT_PLANAR | VPX_IMG_FMT_UV_FLIP | 1, /**< planar YVU */
+    VPX_IMG_FMT_I420    = VPX_IMG_FMT_PLANAR | 2,
+    VPX_IMG_FMT_VPXYV12 = VPX_IMG_FMT_PLANAR | VPX_IMG_FMT_UV_FLIP | 3, /** < planar 4:2:0 format with vpx color space */
+    VPX_IMG_FMT_VPXI420 = VPX_IMG_FMT_PLANAR | 4   /** < planar 4:2:0 format with vpx color space */
+  }
+                        vpx_img_fmt_t; /**< alias for enum vpx_img_fmt */
 
 #if !defined(VPX_CODEC_DISABLE_COMPAT) || !VPX_CODEC_DISABLE_COMPAT
 #define IMG_FMT_PLANAR         VPX_IMG_FMT_PLANAR     /**< \deprecated Use #VPX_IMG_FMT_PLANAR */
 #define IMG_FMT_UV_FLIP        VPX_IMG_FMT_UV_FLIP    /**< \deprecated Use #VPX_IMG_FMT_UV_FLIP */
 #define IMG_FMT_HAS_ALPHA      VPX_IMG_FMT_HAS_ALPHA  /**< \deprecated Use #VPX_IMG_FMT_HAS_ALPHA */
 
-    /*!\brief Deprecated list of supported image formats
-     * \deprecated New code should use #vpx_img_fmt
-     */
+  /*!\brief Deprecated list of supported image formats
+   * \deprecated New code should use #vpx_img_fmt
+   */
 #define img_fmt   vpx_img_fmt
-    /*!\brief alias for enum img_fmt.
-     * \deprecated New code should use #vpx_img_fmt_t
-     */
+  /*!\brief alias for enum img_fmt.
+   * \deprecated New code should use #vpx_img_fmt_t
+   */
 #define img_fmt_t vpx_img_fmt_t
 
 #define IMG_FMT_NONE       VPX_IMG_FMT_NONE       /**< \deprecated Use #VPX_IMG_FMT_NONE */
 #define IMG_FMT_RGB24      VPX_IMG_FMT_RGB24      /**< \deprecated Use #VPX_IMG_FMT_RGB24 */
 #define IMG_FMT_RGB32      VPX_IMG_FMT_RGB32      /**< \deprecated Use #VPX_IMG_FMT_RGB32 */
 #define IMG_FMT_RGB565     VPX_IMG_FMT_RGB565     /**< \deprecated Use #VPX_IMG_FMT_RGB565 */
 #define IMG_FMT_RGB555     VPX_IMG_FMT_RGB555     /**< \deprecated Use #VPX_IMG_FMT_RGB555 */
 #define IMG_FMT_UYVY       VPX_IMG_FMT_UYVY       /**< \deprecated Use #VPX_IMG_FMT_UYVY */
 #define IMG_FMT_YUY2       VPX_IMG_FMT_YUY2       /**< \deprecated Use #VPX_IMG_FMT_YUY2 */
 #define IMG_FMT_YVYU       VPX_IMG_FMT_YVYU       /**< \deprecated Use #VPX_IMG_FMT_YVYU */
 #define IMG_FMT_BGR24      VPX_IMG_FMT_BGR24      /**< \deprecated Use #VPX_IMG_FMT_BGR24 */
 #define IMG_FMT_RGB32_LE   VPX_IMG_FMT_RGB32_LE   /**< \deprecated Use #VPX_IMG_FMT_RGB32_LE */
 #define IMG_FMT_ARGB       VPX_IMG_FMT_ARGB       /**< \deprecated Use #VPX_IMG_FMT_ARGB */
 #define IMG_FMT_ARGB_LE    VPX_IMG_FMT_ARGB_LE    /**< \deprecated Use #VPX_IMG_FMT_ARGB_LE */
 #define IMG_FMT_RGB565_LE  VPX_IMG_FMT_RGB565_LE  /**< \deprecated Use #VPX_IMG_FMT_RGB565_LE */
 #define IMG_FMT_RGB555_LE  VPX_IMG_FMT_RGB555_LE  /**< \deprecated Use #VPX_IMG_FMT_RGB555_LE */
 #define IMG_FMT_YV12       VPX_IMG_FMT_YV12       /**< \deprecated Use #VPX_IMG_FMT_YV12 */
 #define IMG_FMT_I420       VPX_IMG_FMT_I420       /**< \deprecated Use #VPX_IMG_FMT_I420 */
 #define IMG_FMT_VPXYV12    VPX_IMG_FMT_VPXYV12    /**< \deprecated Use #VPX_IMG_FMT_VPXYV12 */
 #define IMG_FMT_VPXI420    VPX_IMG_FMT_VPXI420    /**< \deprecated Use #VPX_IMG_FMT_VPXI420 */
 #endif /* VPX_CODEC_DISABLE_COMPAT */
 
-    /**\brief Image Descriptor */
-    typedef struct vpx_image
-    {
-        vpx_img_fmt_t fmt; /**< Image Format */
+  /**\brief Image Descriptor */
+  typedef struct vpx_image {
+    vpx_img_fmt_t fmt; /**< Image Format */
 
-        /* Image storage dimensions */
-        unsigned int  w;   /**< Stored image width */
-        unsigned int  h;   /**< Stored image height */
+    /* Image storage dimensions */
+    unsigned int  w;   /**< Stored image width */
+    unsigned int  h;   /**< Stored image height */
 
-        /* Image display dimensions */
-        unsigned int  d_w;   /**< Displayed image width */
-        unsigned int  d_h;   /**< Displayed image height */
+    /* Image display dimensions */
+    unsigned int  d_w;   /**< Displayed image width */
+    unsigned int  d_h;   /**< Displayed image height */
 
-        /* Chroma subsampling info */
-        unsigned int  x_chroma_shift;   /**< subsampling order, X */
-        unsigned int  y_chroma_shift;   /**< subsampling order, Y */
+    /* Chroma subsampling info */
+    unsigned int  x_chroma_shift;   /**< subsampling order, X */
+    unsigned int  y_chroma_shift;   /**< subsampling order, Y */
 
-        /* Image data pointers. */
+    /* Image data pointers. */
 #define VPX_PLANE_PACKED 0   /**< To be used for all packed formats */
 #define VPX_PLANE_Y      0   /**< Y (Luminance) plane */
 #define VPX_PLANE_U      1   /**< U (Chroma) plane */
 #define VPX_PLANE_V      2   /**< V (Chroma) plane */
 #define VPX_PLANE_ALPHA  3   /**< A (Transparency) plane */
 #if !defined(VPX_CODEC_DISABLE_COMPAT) || !VPX_CODEC_DISABLE_COMPAT
 #define PLANE_PACKED     VPX_PLANE_PACKED
 #define PLANE_Y          VPX_PLANE_Y
 #define PLANE_U          VPX_PLANE_U
 #define PLANE_V          VPX_PLANE_V
 #define PLANE_ALPHA      VPX_PLANE_ALPHA
 #endif
-        unsigned char *planes[4];  /**< pointer to the top left pixel for each plane */
-        int      stride[4];  /**< stride between rows for each plane */
+    unsigned char *planes[4];  /**< pointer to the top left pixel for each plane */
+    int      stride[4];  /**< stride between rows for each plane */
 
-        int     bps; /**< bits per sample (for packed formats) */
+    int     bps; /**< bits per sample (for packed formats) */
 
-        /* The following member may be set by the application to associate data
-         * with this image.
-         */
-        void    *user_priv; /**< may be set by the application to associate data
+    /* The following member may be set by the application to associate data
+     * with this image.
+     */
+    void    *user_priv; /**< may be set by the application to associate data
                          *   with this image. */
 
-        /* The following members should be treated as private. */
-        unsigned char *img_data;       /**< private */
-        int      img_data_owner; /**< private */
-        int      self_allocd;    /**< private */
-    } vpx_image_t; /**< alias for struct vpx_image */
+    /* The following members should be treated as private. */
+    unsigned char *img_data;       /**< private */
+    int      img_data_owner; /**< private */
+    int      self_allocd;    /**< private */
+  } vpx_image_t; /**< alias for struct vpx_image */
 
-    /**\brief Representation of a rectangle on a surface */
-    typedef struct vpx_image_rect
-    {
-        unsigned int x; /**< leftmost column */
-        unsigned int y; /**< topmost row */
-        unsigned int w; /**< width */
-        unsigned int h; /**< height */
-    } vpx_image_rect_t; /**< alias for struct vpx_image_rect */
+  /**\brief Representation of a rectangle on a surface */
+  typedef struct vpx_image_rect {
+    unsigned int x; /**< leftmost column */
+    unsigned int y; /**< topmost row */
+    unsigned int w; /**< width */
+    unsigned int h; /**< height */
+  } vpx_image_rect_t; /**< alias for struct vpx_image_rect */
 
-    /*!\brief Open a descriptor, allocating storage for the underlying image
-     *
-     * Returns a descriptor for storing an image of the given format. The
-     * storage for the descriptor is allocated on the heap.
-     *
-     * \param[in]    img       Pointer to storage for descriptor. If this parameter
-     *                         is NULL, the storage for the descriptor will be
-     *                         allocated on the heap.
-     * \param[in]    fmt       Format for the image
-     * \param[in]    d_w       Width of the image
-     * \param[in]    d_h       Height of the image
-     * \param[in]    align     Alignment, in bytes, of the image buffer and
-     *                         each row in the image(stride).
-     *
-     * \return Returns a pointer to the initialized image descriptor. If the img
-     *         parameter is non-null, the value of the img parameter will be
-     *         returned.
-     */
-    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);
+  /*!\brief Open a descriptor, allocating storage for the underlying image
+   *
+   * Returns a descriptor for storing an image of the given format. The
+   * storage for the descriptor is allocated on the heap.
+   *
+   * \param[in]    img       Pointer to storage for descriptor. If this parameter
+   *                         is NULL, the storage for the descriptor will be
+   *                         allocated on the heap.
+   * \param[in]    fmt       Format for the image
+   * \param[in]    d_w       Width of the image
+   * \param[in]    d_h       Height of the image
+   * \param[in]    align     Alignment, in bytes, of the image buffer and
+   *                         each row in the image(stride).
+   *
+   * \return Returns a pointer to the initialized image descriptor. If the img
+   *         parameter is non-null, the value of the img parameter will be
+   *         returned.
+   */
+  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);
 
-    /*!\brief Open a descriptor, using existing storage for the underlying image
-     *
-     * Returns a descriptor for storing an image of the given format. The
-     * storage for descriptor has been allocated elsewhere, and a descriptor is
-     * desired to "wrap" that storage.
-     *
-     * \param[in]    img       Pointer to storage for descriptor. If this parameter
-     *                         is NULL, the storage for the descriptor will be
-     *                         allocated on the heap.
-     * \param[in]    fmt       Format for the image
-     * \param[in]    d_w       Width of the image
-     * \param[in]    d_h       Height of the image
-     * \param[in]    align     Alignment, in bytes, of each row in the image.
-     * \param[in]    img_data  Storage to use for the image
-     *
-     * \return Returns a pointer to the initialized image descriptor. If the img
-     *         parameter is non-null, the value of the img parameter will be
-     *         returned.
-     */
-    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 align,
-                              unsigned char      *img_data);
+  /*!\brief Open a descriptor, using existing storage for the underlying image
+   *
+   * Returns a descriptor for storing an image of the given format. The
+   * storage for descriptor has been allocated elsewhere, and a descriptor is
+   * desired to "wrap" that storage.
+   *
+   * \param[in]    img       Pointer to storage for descriptor. If this parameter
+   *                         is NULL, the storage for the descriptor will be
+   *                         allocated on the heap.
+   * \param[in]    fmt       Format for the image
+   * \param[in]    d_w       Width of the image
+   * \param[in]    d_h       Height of the image
+   * \param[in]    align     Alignment, in bytes, of each row in the image.
+   * \param[in]    img_data  Storage to use for the image
+   *
+   * \return Returns a pointer to the initialized image descriptor. If the img
+   *         parameter is non-null, the value of the img parameter will be
+   *         returned.
+   */
+  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 align,
+                            unsigned char      *img_data);
 
 
-    /*!\brief Set the rectangle identifying the displayed portion of the image
-     *
-     * Updates the displayed rectangle (aka viewport) on the image surface to
-     * match the specified coordinates and size.
-     *
-     * \param[in]    img       Image descriptor
-     * \param[in]    x         leftmost column
-     * \param[in]    y         topmost row
-     * \param[in]    w         width
-     * \param[in]    h         height
-     *
-     * \return 0 if the requested rectangle is valid, nonzero otherwise.
-     */
-    int vpx_img_set_rect(vpx_image_t  *img,
-                         unsigned int  x,
-                         unsigned int  y,
-                         unsigned int  w,
-                         unsigned int  h);
+  /*!\brief Set the rectangle identifying the displayed portion of the image
+   *
+   * Updates the displayed rectangle (aka viewport) on the image surface to
+   * match the specified coordinates and size.
+   *
+   * \param[in]    img       Image descriptor
+   * \param[in]    x         leftmost column
+   * \param[in]    y         topmost row
+   * \param[in]    w         width
+   * \param[in]    h         height
+   *
+   * \return 0 if the requested rectangle is valid, nonzero otherwise.
+   */
+  int vpx_img_set_rect(vpx_image_t  *img,
+                       unsigned int  x,
+                       unsigned int  y,
+                       unsigned int  w,
+                       unsigned int  h);
 
 
-    /*!\brief Flip the image vertically (top for bottom)
-     *
-     * Adjusts the image descriptor's pointers and strides to make the image
-     * be referenced upside-down.
-     *
-     * \param[in]    img       Image descriptor
-     */
-    void vpx_img_flip(vpx_image_t *img);
+  /*!\brief Flip the image vertically (top for bottom)
+   *
+   * Adjusts the image descriptor's pointers and strides to make the image
+   * be referenced upside-down.
+   *
+   * \param[in]    img       Image descriptor
+   */
+  void vpx_img_flip(vpx_image_t *img);
 
-    /*!\brief Close an image descriptor
-     *
-     * Frees all allocated storage associated with an image descriptor.
-     *
-     * \param[in]    img       Image descriptor
-     */
-    void vpx_img_free(vpx_image_t *img);
+  /*!\brief Close an image descriptor
+   *
+   * Frees all allocated storage associated with an image descriptor.
+   *
+   * \param[in]    img       Image descriptor
+   */
+  void vpx_img_free(vpx_image_t *img);
 
 #endif
 #ifdef __cplusplus
 }
 #endif