AOMedia AV1 Codec: aom_scale/yv12config.h Source File

| AOMedia AV1 Codec

yv12config.h
1/*
2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12#ifndef AOM_AOM_SCALE_YV12CONFIG_H_
13#define AOM_AOM_SCALE_YV12CONFIG_H_
14
15#ifdef __cplusplus
16extern "C" {
17#endif
18
19#include "config/aom_config.h"
20
21#include "aom/aom_codec.h"
22#include "aom/aom_frame_buffer.h"
23#include "aom/aom_integer.h"
24#include "aom/internal/aom_image_internal.h"
25
28#define AOMINNERBORDERINPIXELS 160
29#define AOM_INTERP_EXTEND 4
30#define AOM_BORDER_IN_PIXELS 288
31#define AOM_ENC_NO_SCALE_BORDER 160
32#define AOM_ENC_ALLINTRA_BORDER 64
33#define AOM_DEC_BORDER_IN_PIXELS 64
34
39 typedef struct yv12_buffer_config {
41 union {
42 struct {
43 int y_width;
44 int uv_width;
45 };
46 int widths[2];
47 };
48 union {
49 struct {
50 int y_height;
51 int uv_height;
52 };
53 int heights[2];
54 };
55 union {
56 struct {
57 int y_crop_width;
58 int uv_crop_width;
59 };
60 int crop_widths[2];
61 };
62 union {
63 struct {
64 int y_crop_height;
65 int uv_crop_height;
66 };
67 int crop_heights[2];
68 };
69 union {
70 struct {
71 int y_stride;
72 int uv_stride;
73 };
74 int strides[2];
75 };
76 union {
77 struct {
78 uint8_t *y_buffer;
79 uint8_t *u_buffer;
80 uint8_t *v_buffer;
81 };
82 uint8_t *buffers[3];
83 };
84
85 // Indicate whether y_buffer, u_buffer, and v_buffer points to the internally
86 // allocated memory or external buffers.
87 int use_external_reference_buffers;
88 // This is needed to store y_buffer, u_buffer, and v_buffer when set reference
89 // uses an external refernece, and restore those buffer pointers after the
90 // external reference frame is no longer used.
91 uint8_t *store_buf_adr[3];
92
93 // If the frame is stored in a 16-bit buffer, this stores an 8-bit version
94 // for use in global motion detection. It is allocated on-demand.
95 uint8_t *y_buffer_8bit;
96 int buf_8bit_valid;
97
98 uint8_t *buffer_alloc;
99 size_t buffer_alloc_sz;
100 int border;
101 size_t frame_size;
102 int subsampling_x;
103 int subsampling_y;
104 unsigned int bit_depth;
105 aom_color_primaries_t color_primaries;
106 aom_transfer_characteristics_t transfer_characteristics;
107 aom_matrix_coefficients_t matrix_coefficients;
108 uint8_t monochrome;
109 aom_chroma_sample_position_t chroma_sample_position;
110 aom_color_range_t color_range;
111 int render_width;
112 int render_height;
113
114 int corrupted;
115 int flags;
116 aom_metadata_array_t *metadata;
118} YV12_BUFFER_CONFIG;
119
122#define YV12_FLAG_HIGHBITDEPTH 8
123
124int aom_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
125 int ss_x, int ss_y, int use_highbitdepth, int border,
126 int byte_alignment, int alloc_y_plane_only);
127
128// Updates the yv12 buffer config with the frame buffer. |byte_alignment| must
129// be a power of 2, from 32 to 1024. 0 sets legacy alignment. If cb is not
130// NULL, then libaom is using the frame buffer callbacks to handle memory.
131// If cb is not NULL, libaom will call cb with minimum size in bytes needed
132// to decode the current frame. If cb is NULL, libaom will allocate memory
133// internally to decode the current frame. Returns 0 on success. Returns < 0
134// on failure.
135int aom_realloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height,
136 int ss_x, int ss_y, int use_highbitdepth,
137 int border, int byte_alignment,
138 aom_codec_frame_buffer_t *fb,
139 aom_get_frame_buffer_cb_fn_t cb, void *cb_priv,
140 int alloc_y_buffer_8bit, int alloc_y_plane_only);
141
142int aom_free_frame_buffer(YV12_BUFFER_CONFIG *ybf);
143
152void aom_remove_metadata_from_frame_buffer(YV12_BUFFER_CONFIG *ybf);
153
167int aom_copy_metadata_to_frame_buffer(YV12_BUFFER_CONFIG *ybf,
168 const aom_metadata_array_t *arr);
169
178static AOM_INLINE int aom_calc_y_stride(int aligned_width, int border) {
179 return ((aligned_width + 2 * border) + 31) & ~31;
180}
181
182#ifdef __cplusplus
183}
184#endif
185
186#endif // AOM_AOM_SCALE_YV12CONFIG_H_
aom_codec.h
Describes the codec algorithm interface to applications.
aom_frame_buffer.h
Describes the decoder external frame buffer interface.
aom_get_frame_buffer_cb_fn_t
int(* aom_get_frame_buffer_cb_fn_t)(void *priv, size_t min_size, aom_codec_frame_buffer_t *fb)
get frame buffer callback prototype
Definition: aom_frame_buffer.h:64
aom_chroma_sample_position_t
enum aom_chroma_sample_position aom_chroma_sample_position_t
List of chroma sample positions.
aom_metadata_array_t
struct aom_metadata_array aom_metadata_array_t
Array of aom_metadata structs for an image.
Definition: aom_image.h:169
aom_transfer_characteristics_t
enum aom_transfer_characteristics aom_transfer_characteristics_t
List of supported transfer functions.
aom_color_range_t
enum aom_color_range aom_color_range_t
List of supported color range.
aom_color_primaries_t
enum aom_color_primaries aom_color_primaries_t
List of supported color primaries.
aom_matrix_coefficients_t
enum aom_matrix_coefficients aom_matrix_coefficients_t
List of supported matrix coefficients.
aom_codec_frame_buffer
External frame buffer.
Definition: aom_frame_buffer.h:40
yv12_buffer_config
YV12 frame buffer data structure.
Definition: yv12config.h:39