int opt;
char filename[FILENAME_MAX] = {0};
- int image_fd = -1;
+ int image_fd;
+ struct stat st;
am7xxx_device dev;
int format = AM7XXX_IMAGE_FORMAT_JPEG;
int width = 800;
int height = 480;
- uint8_t *image = NULL;
- unsigned int size = 59475;
+ uint8_t *image;
+ unsigned int size;
while ((opt = getopt(argc, argv, "f:F:W:H:h")) != -1) {
switch (opt) {
}
}
- if (filename[0] != '\0') {
- struct stat st;
-
- image_fd = open(filename, O_RDONLY);
- if (image_fd < 0) {
- perror("open");
- exit_code = EXIT_FAILURE;
- goto out;
- }
- if (fstat(image_fd, &st) < 0) {
- perror("fstat");
- exit_code = EXIT_FAILURE;
- goto out_close_image_fd;
- }
- size = st.st_size;
+ if (filename[0] == '\0') {
+ fprintf(stderr, "An image file MUST be specified.\n");
+ exit_code = EXIT_FAILURE;
+ goto out;
+ }
- image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
- if (image == NULL) {
- perror("mmap");
- exit_code = EXIT_FAILURE;
- goto out_close_image_fd;
- }
+ image_fd = open(filename, O_RDONLY);
+ if (image_fd < 0) {
+ perror("open");
+ exit_code = EXIT_FAILURE;
+ goto out;
+ }
+ if (fstat(image_fd, &st) < 0) {
+ perror("fstat");
+ exit_code = EXIT_FAILURE;
+ goto out_close_image_fd;
+ }
+ size = st.st_size;
+
+ image = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, image_fd, 0);
+ if (image == NULL) {
+ perror("mmap");
+ exit_code = EXIT_FAILURE;
+ goto out_close_image_fd;
}
dev = am7xxx_init();
am7xxx_shutdown(dev);
out_munmap:
- if (image != NULL) {
- ret = munmap(image, size);
- if (ret < 0)
- perror("munmap");
- }
+ ret = munmap(image, size);
+ if (ret < 0)
+ perror("munmap");
out_close_image_fd:
- if (image_fd >= 0) {
- ret = close(image_fd);
- if (ret < 0)
- perror("close");
- }
+ ret = close(image_fd);
+ if (ret < 0)
+ perror("close");
out:
exit(exit_code);