X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/5003b770a9466d1adefa8bdf4d2cdec1fec333e3..4a66c8b5263166610e11aa2d17e058df7e248ee1:/examples/picoproj.c?ds=inline diff --git a/examples/picoproj.c b/examples/picoproj.c index 54cbedf..9128538 100644 --- a/examples/picoproj.c +++ b/examples/picoproj.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "am7xxx.h" @@ -35,6 +36,7 @@ static void usage(char *name) { printf("usage: %s [OPTIONS]\n\n", name); printf("OPTIONS:\n"); + printf("\t-d \t\tthe device index (default is 0)\n"); printf("\t-f \t\tthe image file to upload\n"); printf("\t-F \t\tthe image format to use (default is JPEG)\n"); printf("\t\t\t\tSUPPORTED FORMATS:\n"); @@ -57,7 +59,6 @@ static void usage(char *name) int main(int argc, char *argv[]) { int ret; - int exit_code = EXIT_SUCCESS; int opt; char filename[FILENAME_MAX] = {0}; @@ -66,17 +67,26 @@ int main(int argc, char *argv[]) am7xxx_context *ctx; am7xxx_device *dev; int log_level = AM7XXX_LOG_INFO; - am7xxx_power_mode power_mode = AM7XXX_POWER_LOW; - am7xxx_zoom_mode zoom = AM7XXX_ZOOM_ORIGINAL; + int device_index = 0; + int power_mode = AM7XXX_POWER_LOW; + int zoom = AM7XXX_ZOOM_ORIGINAL; int format = AM7XXX_IMAGE_FORMAT_JPEG; int width = 800; int height = 480; unsigned char *image; - unsigned int size; + off_t size; am7xxx_device_info device_info; - while ((opt = getopt(argc, argv, "f:F:l:p:z:W:H:h")) != -1) { + while ((opt = getopt(argc, argv, "d:f:F:l:p:z:W:H:h")) != -1) { switch (opt) { + case 'd': + device_index = atoi(optarg); + if (device_index < 0) { + fprintf(stderr, "Unsupported device index\n"); + ret = -EINVAL; + goto out; + } + break; case 'f': if (filename[0] != '\0') fprintf(stderr, "Warning: image file already specified\n"); @@ -93,7 +103,8 @@ int main(int argc, char *argv[]) break; default: fprintf(stderr, "Unsupported format\n"); - exit(EXIT_FAILURE); + ret = -EINVAL; + goto out; } break; case 'l': @@ -116,7 +127,8 @@ int main(int argc, char *argv[]) default: fprintf(stderr, "Invalid power mode value, must be between %d and %d\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO); - exit(EXIT_FAILURE); + ret = -EINVAL; + goto out; } break; case 'z': @@ -131,48 +143,53 @@ int main(int argc, char *argv[]) default: fprintf(stderr, "Invalid zoom mode value, must be between %d and %d\n", AM7XXX_ZOOM_ORIGINAL, AM7XXX_ZOOM_TEST); - exit(EXIT_FAILURE); + ret = -EINVAL; + goto out; } break; case 'W': width = atoi(optarg); if (width < 0) { fprintf(stderr, "Unsupported width\n"); - exit(EXIT_FAILURE); + ret = -EINVAL; + goto out; } break; case 'H': height = atoi(optarg); if (height < 0) { fprintf(stderr, "Unsupported height\n"); - exit(EXIT_FAILURE); + ret = -EINVAL; + goto out; } break; case 'h': usage(argv[0]); - exit(EXIT_SUCCESS); - break; + ret = 0; + goto out; default: /* '?' */ usage(argv[0]); - exit(EXIT_FAILURE); + ret = -EINVAL; + goto out; } } if (filename[0] == '\0') { - fprintf(stderr, "An image file MUST be specified.\n"); - exit_code = EXIT_FAILURE; + fprintf(stderr, "An image file MUST be specified with the -f option.\n\n"); + usage(argv[0]); + ret = -EINVAL; goto out; } image_fp = fopen(filename, "rb"); if (image_fp == NULL) { perror("fopen"); - exit_code = EXIT_FAILURE; + ret = -EINVAL; goto out; } - if (fstat(fileno(image_fp), &st) < 0) { + ret = fstat(fileno(image_fp), &st); + if (ret < 0) { perror("fstat"); - exit_code = EXIT_FAILURE; goto out_close_image_fp; } size = st.st_size; @@ -180,11 +197,11 @@ int main(int argc, char *argv[]) image = malloc(size * sizeof(unsigned char)); if (image == NULL) { perror("malloc"); - exit_code = EXIT_FAILURE; + ret = -ENOMEM; goto out_close_image_fp; } - ret = fread(image, size, 1, image_fp); + ret = (int)fread(image, size, 1, image_fp); if (ret != 1) { if (feof(image_fp)) fprintf(stderr, "Unexpected end of file.\n"); @@ -193,13 +210,14 @@ int main(int argc, char *argv[]) else fprintf(stderr, "Unexpected error condition.\n"); + if (ret >= 0) + ret = -EINVAL; goto out_free_image; } ret = am7xxx_init(&ctx); if (ret < 0) { perror("am7xxx_init"); - exit_code = EXIT_FAILURE; goto out_free_image; } @@ -208,29 +226,24 @@ int main(int argc, char *argv[]) ret = am7xxx_open_device(ctx, &dev, 0); if (ret < 0) { perror("am7xxx_open_device"); - exit_code = EXIT_FAILURE; goto cleanup; } - ret = am7xxx_close_device(dev); if (ret < 0) { perror("am7xxx_close_device"); - exit_code = EXIT_FAILURE; goto cleanup; } - ret = am7xxx_open_device(ctx, &dev, 0); + ret = am7xxx_open_device(ctx, &dev, device_index); if (ret < 0) { perror("am7xxx_open_device"); - exit_code = EXIT_FAILURE; goto cleanup; } ret = am7xxx_get_device_info(dev, &device_info); if (ret < 0) { perror("am7xxx_get_device_info"); - exit_code = EXIT_FAILURE; goto cleanup; } printf("Native resolution: %dx%d\n", @@ -239,34 +252,34 @@ int main(int argc, char *argv[]) ret = am7xxx_set_zoom_mode(dev, zoom); if (ret < 0) { perror("am7xxx_set_zoom_mode"); - exit_code = EXIT_FAILURE; goto cleanup; } ret = am7xxx_set_power_mode(dev, power_mode); if (ret < 0) { perror("am7xxx_set_power_mode"); - exit_code = EXIT_FAILURE; goto cleanup; } /* When setting AM7XXX_ZOOM_TEST don't display the actual image */ - if (zoom == AM7XXX_ZOOM_TEST) + if (zoom == AM7XXX_ZOOM_TEST) { + printf("AM7XXX_ZOOM_TEST requested, not sending actual image.\n"); goto cleanup; - + } if ((unsigned int)width > device_info.native_width || (unsigned int)height > device_info.native_height) - fprintf(stderr, "WARNING: image not fitting the native resolution, it may be displayed wrongly!\n"); + fprintf(stderr, + "WARNING: image is %dx%d, not fitting the native resolution, it may be displayed wrongly!\n", + width, height); - ret = am7xxx_send_image(dev, format, width, height, image, size); + ret = am7xxx_send_image(dev, format, width, height, image, (unsigned int)size); if (ret < 0) { perror("am7xxx_send_image"); - exit_code = EXIT_FAILURE; goto cleanup; } - exit_code = EXIT_SUCCESS; + ret = 0; cleanup: am7xxx_shutdown(ctx); @@ -275,10 +288,9 @@ out_free_image: free(image); out_close_image_fp: - ret = fclose(image_fp); - if (ret == EOF) + if (fclose(image_fp) == EOF) perror("fclose"); out: - exit(exit_code); + return ret; }