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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 #ifndef VPX_VPX_SCALE_YV12CONFIG_H_
12 #define VPX_VPX_SCALE_YV12CONFIG_H_
13 
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17 
18 #include "./vpx_config.h"
19 #include "vpx/vpx_codec.h"
20 #include "vpx/vpx_frame_buffer.h"
21 #include "vpx/vpx_integer.h"
22 
23 #define VP8BORDERINPIXELS 32
24 #define VP9INNERBORDERINPIXELS 96
25 #define VP9_INTERP_EXTEND 4
26 #define VP9_ENC_BORDER_IN_PIXELS 160
27 #define VP9_DEC_BORDER_IN_PIXELS 32
28 
29 typedef struct yv12_buffer_config {
30   int y_width;
31   int y_height;
32   int y_crop_width;
33   int y_crop_height;
34   int y_stride;
35 
36   int uv_width;
37   int uv_height;
38   int uv_crop_width;
39   int uv_crop_height;
40   int uv_stride;
41 
42   int alpha_width;
43   int alpha_height;
44   int alpha_stride;
45 
46   uint8_t *y_buffer;
47   uint8_t *u_buffer;
48   uint8_t *v_buffer;
49   uint8_t *alpha_buffer;
50 
51   uint8_t *buffer_alloc;
52   size_t buffer_alloc_sz;
53   int border;
54   size_t frame_size;
55   int subsampling_x;
56   int subsampling_y;
57   unsigned int bit_depth;
58   vpx_color_space_t color_space;
59   vpx_color_range_t color_range;
60   int render_width;
61   int render_height;
62 
63   int corrupted;
64   int flags;
65 } YV12_BUFFER_CONFIG;
66 
67 #define YV12_FLAG_HIGHBITDEPTH 8
68 
69 int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
70                                 int border);
71 int vp8_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width,
72                                   int height, int border);
73 int vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
74 
75 int vpx_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
76                            int ss_x, int ss_y,
77 #if CONFIG_VP9_HIGHBITDEPTH
78                            int use_highbitdepth,
79 #endif
80                            int border, int byte_alignment);
81 
82 // Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
83 // be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
84 // NULL, then libvpx is using the frame buffer callbacks to handle memory.
85 // If cb is not NULL, libvpx will call cb with minimum size in bytes needed
86 // to decode the current frame. If cb is NULL, libvpx will allocate memory
87 // internally to decode the current frame. Returns 0 on success. Returns < 0
88 // on failure.
89 int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
90                              int ss_x, int ss_y,
91 #if CONFIG_VP9_HIGHBITDEPTH
92                              int use_highbitdepth,
93 #endif
94                              int border, int byte_alignment,
95                              vpx_codec_frame_buffer_t *fb,
96                              vpx_get_frame_buffer_cb_fn_t cb, void *cb_priv);
97 int vpx_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
98 
99 #ifdef __cplusplus
100 }
101 #endif
102 
103 #endif  // VPX_VPX_SCALE_YV12CONFIG_H_
104