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
|
/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*
* Almost LGPL.
*/
#ifndef MPLAYER_MP_IMAGE_H
#define MPLAYER_MP_IMAGE_H
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "common/common.h"
#include "common/msg.h"
#include "csputils.h"
#include "video/img_format.h"
#define MP_PALETTE_SIZE (256 * 4)
#define MP_IMGFIELD_TOP_FIRST 0x02
#define MP_IMGFIELD_REPEAT_FIRST 0x04
#define MP_IMGFIELD_INTERLACED 0x20
// Describes image parameters that usually stay constant.
// New fields can be added in the future. Code changing the parameters should
// usually copy the whole struct, so that fields added later will be preserved.
struct mp_image_params {
enum mp_imgfmt imgfmt; // pixel format
enum mp_imgfmt hw_subfmt; // underlying format for some hwaccel pixfmts
int w, h; // image dimensions
int p_w, p_h; // define pixel aspect ratio (undefined: 0/0)
struct mp_colorspace color;
enum mp_chroma_location chroma_location;
// The image should be rotated clockwise (0-359 degrees).
int rotate;
enum mp_stereo3d_mode stereo_in; // image is encoded with this mode
enum mp_stereo3d_mode stereo_out; // should be displayed with this mode
};
/* Memory management:
* - mp_image is a light-weight reference to the actual image data (pixels).
* The actual image data is reference counted and can outlive mp_image
* allocations. mp_image references can be created with mp_image_new_ref()
* and free'd with talloc_free() (the helpers mp_image_setrefp() and
* mp_image_unrefp() can also be used). The actual image data is free'd when
* the last mp_image reference to it is free'd.
* - Each mp_image has a clear owner. The owner can do anything with it, such
* as changing mp_image fields. Instead of making ownership ambiguous by
* sharing a mp_image reference, new references should be created.
* - Write access to the actual image data is allowed only after calling
* mp_image_make_writeable(), or if mp_image_is_writeable() returns true.
* Conceptually, images can be changed by their owner only, and copy-on-write
* is used to ensure that other references do not see any changes to the
* image data. mp_image_make_writeable() will do that copy if required.
*/
typedef struct mp_image {
int w, h; // visible dimensions (redundant with params.w/h)
struct mp_image_params params;
// fields redundant to params.imgfmt, for convenience or compatibility
struct mp_imgfmt_desc fmt;
enum mp_imgfmt imgfmt;
int num_planes;
uint8_t *planes[MP_MAX_PLANES];
int stride[MP_MAX_PLANES];
int pict_type; // 0->unknown, 1->I, 2->P, 3->B
int fields;
/* only inside filter chain */
double pts;
/* only after decoder */
double dts, pkt_duration;
/* for private use */
void* priv;
// Reference-counted data references.
// These do not necessarily map directly to planes[]. They can have
// different order or count. There shouldn't be more buffers than planes.
// If bufs[n] is NULL, bufs[n+1] must also be NULL.
// All mp_* functions manage this automatically; do not mess with it.
// (See also AVFrame.buf.)
struct AVBufferRef *bufs[MP_MAX_PLANES];
// Points to AVHWFramesContext* (same as AVFrame.hw_frames_ctx)
struct AVBufferRef *hwctx;
// Embedded ICC profile, if any
struct AVBufferRef *icc_profile;
} mp_image_t;
int mp_chroma_div_up(int size, int shift);
int mp_image_get_alloc_size(int imgfmt, int w, int h, int stride_align);
struct mp_image *mp_image_from_buffer(int imgfmt, int w, int h, int stride_align,
uint8_t *buffer, int buffer_size,
void *free_opaque,
void (*free)(void *opaque, uint8_t *data));
struct mp_image *mp_image_alloc(int fmt, int w, int h);
void mp_image_copy(struct mp_image *dmpi, struct mp_image *mpi);
void mp_image_copy_gpu(struct mp_image *dst, struct mp_image *src);
void mp_image_copy_attributes(struct mp_image *dmpi, struct mp_image *mpi);
struct mp_image *mp_image_new_copy(struct mp_image *img);
struct mp_image *mp_image_new_ref(struct mp_image *img);
bool mp_image_is_writeable(struct mp_image *img);
bool mp_image_make_writeable(struct mp_image *img);
void mp_image_setrefp(struct mp_image **p_img, struct mp_image *new_value);
void mp_image_unrefp(struct mp_image **p_img);
void mp_image_clear(struct mp_image *mpi, int x0, int y0, int x1, int y1);
void mp_image_crop(struct mp_image *img, int x0, int y0, int x1, int y1);
void mp_image_crop_rc(struct mp_image *img, struct mp_rect rc);
void mp_image_vflip(struct mp_image *img);
void mp_image_set_size(struct mp_image *mpi, int w, int h);
int mp_image_plane_w(struct mp_image *mpi, int plane);
int mp_image_plane_h(struct mp_image *mpi, int plane);
void mp_image_setfmt(mp_image_t* mpi, int out_fmt);
void mp_image_steal_data(struct mp_image *dst, struct mp_image *src);
void mp_image_unref_data(struct mp_image *img);
struct mp_image *mp_image_new_dummy_ref(struct mp_image *img);
struct mp_image *mp_image_new_custom_ref(struct mp_image *img, void *arg,
void (*free)(void *arg));
void mp_image_params_guess_csp(struct mp_image_params *params);
char *mp_image_params_to_str_buf(char *b, size_t bs,
const struct mp_image_params *p);
#define mp_image_params_to_str(p) mp_image_params_to_str_buf((char[99]){0}, 99, p)
bool mp_image_params_valid(const struct mp_image_params *p);
bool mp_image_params_equal(const struct mp_image_params *p1,
const struct mp_image_params *p2);
void mp_image_params_get_dsize(const struct mp_image_params *p,
int *d_w, int *d_h);
void mp_image_params_set_dsize(struct mp_image_params *p, int d_w, int d_h);
void mp_image_set_params(struct mp_image *image,
const struct mp_image_params *params);
void mp_image_set_attributes(struct mp_image *image,
const struct mp_image_params *params);
struct AVFrame;
struct mp_image *mp_image_from_av_frame(struct AVFrame *av_frame);
struct AVFrame *mp_image_to_av_frame(struct mp_image *img);
struct AVFrame *mp_image_to_av_frame_and_unref(struct mp_image *img);
void memcpy_pic(void *dst, const void *src, int bytesPerLine, int height,
int dstStride, int srcStride);
void memset_pic(void *dst, int fill, int bytesPerLine, int height, int stride);
void memset16_pic(void *dst, int fill, int unitsPerLine, int height, int stride);
void mp_check_gpu_memcpy(struct mp_log *log, bool *once);
#endif /* MPLAYER_MP_IMAGE_H */
|
