2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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.
11 #ifndef VPX_SCALE_YV12CONFIG_H_
12 #define VPX_SCALE_YV12CONFIG_H_
18 #include "./vpx_config.h"
19 #include "vpx/vpx_codec.h"
20 #include "vpx/vpx_frame_buffer.h"
21 #include "vpx/vpx_integer.h"
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
29 typedef struct yv12_buffer_config {
49 uint8_t *alpha_buffer;
51 uint8_t *buffer_alloc;
57 unsigned int bit_depth;
58 vpx_color_space_t color_space;
65 #define YV12_FLAG_HIGHBITDEPTH 8
67 int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
68 int width, int height, int border);
69 int vp8_yv12_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
70 int width, int height, int border);
71 int vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf);
73 int vpx_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
74 int width, int height, int ss_x, int ss_y,
75 #if CONFIG_VP9_HIGHBITDEPTH
78 int border, int byte_alignment);
80 // Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
81 // be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
82 // NULL, then libvpx is using the frame buffer callbacks to handle memory.
83 // If cb is not NULL, libvpx will call cb with minimum size in bytes needed
84 // to decode the current frame. If cb is NULL, libvpx will allocate memory
85 // internally to decode the current frame. Returns 0 on success. Returns < 0
87 int vpx_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf,
88 int width, int height, int ss_x, int ss_y,
89 #if CONFIG_VP9_HIGHBITDEPTH
94 vpx_codec_frame_buffer_t *fb,
95 vpx_get_frame_buffer_cb_fn_t cb,
97 int vpx_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
103 #endif // VPX_SCALE_YV12CONFIG_H_