85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
#include "app_config.h"
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#include "system/includes.h"
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#include "device/device.h"
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#include "yuv_soft_scalling.h"
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#include "fs/fs.h"
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static void yuv_scalling_test(void)
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{
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FILE *fd = NULL;
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int len;
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int w = 320;//YUV420数据分辨率宽
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int h = 240;//YUV420数据分辨率高
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int scal_w = 168;//480;//YUV420缩放后的宽
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int scal_h = 128;//320;//YUV420缩放后的高
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void *yuv = NULL;
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void *yuv_scanl = NULL;
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int ret;
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extern int storage_device_ready(void);
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while (!storage_device_ready()) {//等待sd文件系统挂载完成
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os_time_dly(2);
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}
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//1.从SD卡打开yuv文件数据到内存中
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fd = fopen(CONFIG_ROOT_PATH"test.yuv", "rb");
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if (fd == NULL) {
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printf("no file\n");
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goto exit;
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}
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len = flen(fd);//读取YUV数据长度
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yuv = malloc(len);
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if (!yuv) {
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printf("yuv buf malloc err \n");
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goto exit;
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}
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if (fread(yuv, 1, len, fd) != len) {//读取YUV数据
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printf("read file len err \n");
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goto exit;
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}
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fclose(fd);
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fd = NULL;
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//2.申请缩放的内存
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yuv_scanl = malloc(scal_w * scal_h * 3 / 2);//YUV420大小：分辨率*1.5
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if (!yuv_scanl) {
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printf("yuv_scanl buf malloc err \n");
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goto exit;
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}
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//3.缩放YUV
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ret = YUV420p_Soft_Scaling(yuv, yuv_scanl, w, h, scal_w, scal_h);//返回值为缩放后的数据量大小
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if (ret) {
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fd = fopen(CONFIG_ROOT_PATH"test_scal.yuv", "w+");//创建文件
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if (fd) {
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fwrite(yuv_scanl, 1, ret, fd);
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fclose(fd);
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fd = NULL;
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printf("YUV420p_Soft write file ok\n");
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}
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}
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exit:
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if (yuv_scanl) {
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free(yuv_scanl);
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yuv_scanl = NULL;
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}
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if (yuv) {
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free(yuv);
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yuv = NULL;
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}
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if (fd) {
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fclose(fd);
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fd = NULL;
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}
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while (1) {//等待被杀（注意：不能自杀）
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os_time_dly(10);
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}
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}
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static int c_main(void)
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{
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os_task_create(yuv_scalling_test, NULL, 12, 1000, 0, "yuv_scalling_test");
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return 0;
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}
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late_initcall(c_main);
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