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
|
/*
* Copyright 2021 Advanced Micro Devices, Inc.
* Copyright 2022 Collabora, Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#pragma once
#include <stdint.h>
#include <pixman.h>
#include "weston-test-assert.h"
/** A collection of basic information extracted from a pixman_image_t */
struct image_header {
int width;
int height;
pixman_format_code_t pixman_format;
int stride_bytes;
unsigned char *data;
};
/** Populate image_header from pixman_image_t */
static inline struct image_header
image_header_from(pixman_image_t *image)
{
struct image_header h;
h.width = pixman_image_get_width(image);
h.height = pixman_image_get_height(image);
h.pixman_format = pixman_image_get_format(image);
h.stride_bytes = pixman_image_get_stride(image);
h.data = (void *)pixman_image_get_data(image);
return h;
}
/** Get pointer to the beginning of the row
*
* \param header Header describing the Pixman image.
* \param y Index of the desired row, starting from zero.
* \return Pointer to the first pixel of the row.
*
* Asserts that y is within image height, and that pixel format uses 32 bits
* per pixel.
*/
static inline uint32_t *
image_header_get_row_u32(const struct image_header *header, int y)
{
test_assert_int_ge(y, 0);
test_assert_int_lt(y, header->height);
test_assert_int_eq(PIXMAN_FORMAT_BPP(header->pixman_format), 32);
return (uint32_t *)(header->data + y * header->stride_bytes);
}
|
