1 /*
2 * Copyright (C) 2022 Rockchip Electronics Co., Ltd.
3 * Authors:
4 * YuQiaowei <cerf.yu@rock-chips.com>
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 #define LOG_NDEBUG 0
20 #undef LOG_TAG
21 #define LOG_TAG "rga_cvtcolor_gray256_demo"
22
23 #include <stdint.h>
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <string.h>
27 #include <errno.h>
28 #include <time.h>
29 #include <sys/types.h>
30 #include <sys/time.h>
31 #include <sys/mman.h>
32 #include <math.h>
33 #include <fcntl.h>
34 #include <signal.h>
35 #include <unistd.h>
36 #include <linux/stddef.h>
37
38 #include "RgaUtils.h"
39 #include "im2d.hpp"
40
41 #include "utils.h"
42
43 #define LOCAL_FILE_PATH "/data"
44
main()45 int main() {
46 int ret = 0;
47 int src_width, src_height, src_format;
48 int dst_width, dst_height, dst_format;
49 char *src_buf, *dst_buf;
50 int src_buf_size, dst_buf_size;
51
52 rga_buffer_t src_img, dst_img;
53 rga_buffer_handle_t src_handle, dst_handle;
54
55 memset(&src_img, 0, sizeof(src_img));
56 memset(&dst_img, 0, sizeof(dst_img));
57
58 src_width = 1280;
59 src_height = 720;
60 src_format = RK_FORMAT_RGBA_8888;
61
62 dst_width = 1280;
63 dst_height = 720;
64 dst_format = RK_FORMAT_YCbCr_400;
65
66 src_buf_size = src_width * src_height * get_bpp_from_format(src_format);
67 dst_buf_size = dst_width * dst_height * get_bpp_from_format(dst_format);
68
69 src_buf = (char *)malloc(src_buf_size);
70 dst_buf = (char *)malloc(dst_buf_size);
71
72 /* fill image data */
73 if (0 != read_image_from_file(src_buf, LOCAL_FILE_PATH, src_width, src_height, src_format, 0)) {
74 printf("src image read err\n");
75 draw_rgba(src_buf, src_width, src_height);
76 }
77 memset(dst_buf, 0x80, dst_buf_size);
78
79 src_handle = importbuffer_virtualaddr(src_buf, src_buf_size);
80 dst_handle = importbuffer_virtualaddr(dst_buf, dst_buf_size);
81 if (src_handle == 0 || dst_handle == 0) {
82 printf("importbuffer failed!\n");
83 goto release_buffer;
84 }
85
86 src_img = wrapbuffer_handle(src_handle, src_width, src_height, src_format);
87 dst_img = wrapbuffer_handle(dst_handle, dst_width, dst_height, dst_format);
88
89 ret = imcheck(src_img, dst_img, {}, {});
90 if (IM_STATUS_NOERROR != ret) {
91 printf("%d, check error! %s", __LINE__, imStrError((IM_STATUS)ret));
92 return -1;
93 }
94
95 /*
96 * By converting the RGBA image to a YUV image, the Y channel is used as
97 * a 256-level grayscale image.
98 * Since the RGB->YUV csc is introduced here, it is necessary to use the
99 * BT 601 full range to obtain the complete Y channel data, otherwise the
100 * Y channel data obtained by the limit range is clipped.
101 */
102 ret = imcvtcolor(src_img, dst_img, src_format, dst_format, IM_RGB_TO_YUV_BT601_FULL);
103 if (ret == IM_STATUS_SUCCESS) {
104 printf("%s running success!\n", LOG_TAG);
105 } else {
106 printf("%s running failed, %s\n", LOG_TAG, imStrError((IM_STATUS)ret));
107 goto release_buffer;
108 }
109
110 write_image_to_file(dst_buf, LOCAL_FILE_PATH, dst_width, dst_height, dst_format, 0);
111
112 release_buffer:
113 if (src_handle)
114 releasebuffer_handle(src_handle);
115 if (dst_handle)
116 releasebuffer_handle(dst_handle);
117
118 if (src_buf)
119 free(src_buf);
120 if (dst_buf)
121 free(dst_buf);
122
123 return ret;
124 }
125