Home | History | Annotate | Download | only in vpx_scale
      1 /*
      2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 
     12 #ifndef YV12_CONFIG_H
     13 #define YV12_CONFIG_H
     14 #ifdef __cplusplus
     15 extern "C"
     16 {
     17 #endif
     18 
     19 #define VP7BORDERINPIXELS       48
     20 #define VP8BORDERINPIXELS       32
     21 
     22     /*************************************
     23      For INT_YUV:
     24 
     25      Y = (R+G*2+B)/4;
     26      U = (R-B)/2;
     27      V =  (G*2 - R - B)/4;
     28     And
     29      R = Y+U-V;
     30      G = Y+V;
     31      B = Y-U-V;
     32     ************************************/
     33     typedef enum
     34     {
     35         REG_YUV = 0,    /* Regular yuv */
     36         INT_YUV = 1     /* The type of yuv that can be tranfer to and from RGB through integer transform */
     37               }
     38               YUV_TYPE;
     39 
     40     typedef struct
     41     {
     42         int   y_width;
     43         int   y_height;
     44         int   y_stride;
     45 /*    int   yinternal_width; */
     46 
     47         int   uv_width;
     48         int   uv_height;
     49         int   uv_stride;
     50 /*    int   uvinternal_width; */
     51 
     52         unsigned char *y_buffer;
     53         unsigned char *u_buffer;
     54         unsigned char *v_buffer;
     55 
     56         unsigned char *buffer_alloc;
     57         int border;
     58         int frame_size;
     59         YUV_TYPE clrtype;
     60 
     61         int corrupted;
     62     } YV12_BUFFER_CONFIG;
     63 
     64     int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height, int border);
     65     int vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
     66 
     67 #ifdef __cplusplus
     68 }
     69 #endif
     70 
     71 
     72 #endif /*YV12_CONFIG_H*/
     73