1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AOM_SCALE_YV12CONFIG_H_
#define AOM_AOM_SCALE_YV12CONFIG_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdbool.h>
#include "config/aom_config.h"
#include "aom/aom_codec.h"
#include "aom/aom_frame_buffer.h"
#include "aom/aom_integer.h"
#include "aom/internal/aom_image_internal.h"
/*!\cond */
#define AOMINNERBORDERINPIXELS 160
#define AOM_INTERP_EXTEND 4
#define AOM_BORDER_IN_PIXELS 288
#define AOM_ENC_NO_SCALE_BORDER 160
#define AOM_ENC_ALLINTRA_BORDER 64
#define AOM_DEC_BORDER_IN_PIXELS 64
#if CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
struct image_pyramid;
struct corner_list;
#endif // CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
/*!\endcond */
/*!
* \brief YV12 frame buffer data structure
*/
typedef struct yv12_buffer_config {
/*!\cond */
union {
struct {
// The aligned frame width of luma.
// It is aligned to a multiple of 8:
// y_width = (y_crop_width + 7) & ~7
int y_width;
// The aligned frame width of chroma.
// uv_width = y_width >> subsampling_x
int uv_width;
};
int widths[2];
};
union {
struct {
// The aligned frame height of luma.
// It is aligned to a multiple of 8:
// y_height = (y_crop_height + 7) & ~7
int y_height;
// The aligned frame height of chroma.
// uv_height = y_height >> subsampling_y
int uv_height;
};
int heights[2];
};
// The frame size en/decoded by AV1
union {
struct {
int y_crop_width;
int uv_crop_width;
};
int crop_widths[2];
};
union {
struct {
int y_crop_height;
int uv_crop_height;
};
int crop_heights[2];
};
union {
struct {
int y_stride;
int uv_stride;
};
int strides[2];
};
union {
struct {
uint8_t *y_buffer;
uint8_t *u_buffer;
uint8_t *v_buffer;
};
uint8_t *buffers[3];
};
// Indicate whether y_buffer, u_buffer, and v_buffer points to the internally
// allocated memory or external buffers.
int use_external_reference_buffers;
// This is needed to store y_buffer, u_buffer, and v_buffer when set reference
// uses an external refernece, and restore those buffer pointers after the
// external reference frame is no longer used.
uint8_t *store_buf_adr[3];
// Global motion search data
#if CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
// 8-bit downsampling pyramid for the Y plane
struct image_pyramid *y_pyramid;
struct corner_list *corners;
#endif // CONFIG_AV1_ENCODER && !CONFIG_REALTIME_ONLY
uint8_t *buffer_alloc;
size_t buffer_alloc_sz;
int border;
size_t frame_size;
int subsampling_x;
int subsampling_y;
unsigned int bit_depth;
aom_color_primaries_t color_primaries;
aom_transfer_characteristics_t transfer_characteristics;
aom_matrix_coefficients_t matrix_coefficients;
uint8_t monochrome;
aom_chroma_sample_position_t chroma_sample_position;
aom_color_range_t color_range;
int render_width;
int render_height;
int corrupted;
int flags;
aom_metadata_array_t *metadata;
/*!\endcond */
} YV12_BUFFER_CONFIG;
/*!\cond */
#define YV12_FLAG_HIGHBITDEPTH 8
// Allocate a frame buffer
//
// If ybf currently contains an image, all associated memory will be freed and
// then reallocated. In contrast, aom_realloc_frame_buffer() will reuse any
// existing allocations where possible. So, if ybf is likely to already be
// set up, please consider aom_realloc_frame_buffer() instead.
//
// See aom_realloc_frame_buffer() for the meanings of the arguments, and
// available return values.
int aom_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
int ss_x, int ss_y, int use_highbitdepth, int border,
int byte_alignment, bool alloc_pyramid,
int alloc_y_plane_only);
// Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
// be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
// NULL, then libaom is using the frame buffer callbacks to handle memory.
// If cb is not NULL, libaom will call cb with minimum size in bytes needed
// to decode the current frame. If cb is NULL, libaom will allocate memory
// internally to decode the current frame.
//
// If alloc_pyramid is true, then an image pyramid will be allocated
// for use in global motion estimation. This is only needed if this frame
// buffer will be used to store a source frame or a reference frame in
// the encoder. Any other framebuffers (eg, intermediates for filtering,
// or any buffer in the decoder) can set alloc_pyramid = false.
//
// Returns 0 on success. Returns < 0 on failure.
int aom_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
int ss_x, int ss_y, int use_highbitdepth,
int border, int byte_alignment,
aom_codec_frame_buffer_t *fb,
aom_get_frame_buffer_cb_fn_t cb, void *cb_priv,
bool alloc_pyramid, int alloc_y_plane_only);
int aom_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
/*!\endcond */
/*!\brief Removes metadata from YUV_BUFFER_CONFIG struct.
*
* Frees metadata in frame buffer.
* Frame buffer metadata pointer will be set to NULL.
*
* \param[in] ybf Frame buffer struct pointer
*/
void aom_remove_metadata_from_frame_buffer(YV12_BUFFER_CONFIG *ybf);
/*!\brief Copy metadata to YUV_BUFFER_CONFIG struct.
*
* Copies metadata to frame buffer.
* Frame buffer will clear any previous metadata and will reallocate the
* metadata array to the new metadata size. Then, it will copy the new metadata
* array into it.
* If arr metadata pointer points to the same address as current metadata in the
* frame buffer, function will do nothing and return 0.
* Returns 0 on success or -1 on failure.
*
* \param[in] ybf Frame buffer struct pointer
* \param[in] arr Metadata array struct pointer
*/
int aom_copy_metadata_to_frame_buffer(YV12_BUFFER_CONFIG *ybf,
const aom_metadata_array_t *arr);
/*!\brief Calculate the stride required for the image.
*
* Calculates the stride value for an image from aligned width and border.
* Returns the y stride value.
*
* \param[in] aligned_width Aligned width of the image
* \param[in] border Border in pixels
*/
static AOM_INLINE int aom_calc_y_stride(int aligned_width, int border) {
return ((aligned_width + 2 * border) + 31) & ~31;
}
#ifdef __cplusplus
}
#endif
#endif // AOM_AOM_SCALE_YV12CONFIG_H_
|
