diff --git a/C/misc/randomJPG/Makefile b/C/misc/randomJPG/Makefile new file mode 100644 index 0000000..cba4536 --- /dev/null +++ b/C/misc/randomJPG/Makefile @@ -0,0 +1,31 @@ +# Compiler +CC = gcc + +# Compiler flags +CFLAGS = -Wall -O3 -march=native -flto -fomit-frame-pointer + +# Libraries +LIBS = -ljpeg + +# Source files +SRCS = generate_jpg.c + +# Output executable +TARGET = generate_images + +# Default target +all: $(TARGET) + +# Link and compile the program +$(TARGET): $(SRCS) + $(CC) $(CFLAGS) -o $(TARGET) $(SRCS) $(LIBS) + +# Clean up build artifacts +clean: + rm -f $(TARGET) + +# Install the program (optional) +install: $(TARGET) + install -m 755 $(TARGET) /usr/local/bin/ + +.PHONY: all clean install diff --git a/C/misc/randomJPG/generate_jpg.c b/C/misc/randomJPG/generate_jpg.c new file mode 100644 index 0000000..f1fa51e --- /dev/null +++ b/C/misc/randomJPG/generate_jpg.c @@ -0,0 +1,238 @@ +#include +#include +#include +#include +#include +#include +#include + +typedef struct { + unsigned char r, g, b; +} RGB; + +void print_usage(const char* program_name) { + printf("Usage: %s [options] ... \n", program_name); + printf("Options:\n"); + printf(" -h, --help Show this help message and exit\n"); + printf("Arguments:\n"); + printf(" Number of images to generate (default: 1)\n"); + printf(" Size of each image (default: 1000)\n"); + printf(" Size of each block (default: 25)\n"); + printf(" Quality of the output image (default: 100)\n"); + printf(" Path to save the output image (default: output.png)\n"); + printf(" ... List of colors in hex format (default: #000000 and #FFFFFF)\n"); +} + +void create_folder_if_not_exists(const char* folder) { + struct stat st = {0}; + if (stat(folder, &st) == -1) { + if (mkdir(folder, 0700) != 0) { + fprintf(stderr, "Error creating directory: %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + } +} + +void generate_image_filename(char* unique_output_path, size_t size, const char* folder, int image_index) { + snprintf(unique_output_path, size, "%s/bloated_image_%d.jpg", folder, image_index); +} + +unsigned char* allocate_image_buffer(int size) { + unsigned char *image_buffer = malloc(size * size * 3); + if (!image_buffer) { + fprintf(stderr, "Error allocating memory\n"); + exit(EXIT_FAILURE); + } + return image_buffer; +} + +void fill_image_with_colors(unsigned char* image_buffer, int size, RGB* color_list, int num_colors, int block_size) { + for (int y = 0; y < size; y += block_size) { + for (int x = 0; x < size; x += block_size) { + RGB color = color_list[rand() % num_colors]; + for (int i = 0; i < block_size; ++i) { + for (int j = 0; j < block_size; ++j) { + int index = ((y + i) * size + (x + j)) * 3; + image_buffer[index] = color.r; + image_buffer[index + 1] = color.g; + image_buffer[index + 2] = color.b; + } + } + } + } +} + + +void handle_error(FILE *outfile, unsigned char *image_buffer) { + if (!outfile) { + fprintf(stderr, "Error opening output file: %s\n", strerror(errno)); + free(image_buffer); + exit(EXIT_FAILURE); + } +} + +void setup_compression(struct jpeg_compress_struct *cinfo, struct jpeg_error_mgr *jerr, FILE *outfile, int size, int quality) { + cinfo->err = jpeg_std_error(jerr); + jpeg_create_compress(cinfo); + jpeg_stdio_dest(cinfo, outfile); + + cinfo->image_width = size; + cinfo->image_height = size; + cinfo->input_components = 3; + cinfo->in_color_space = JCS_RGB; + + jpeg_set_defaults(cinfo); + jpeg_set_quality(cinfo, quality, TRUE); + jpeg_start_compress(cinfo, TRUE); +} + +void write_scanlines(struct jpeg_compress_struct *cinfo, unsigned char *image_buffer, int size) { + JSAMPROW row_pointer; + while (cinfo->next_scanline < cinfo->image_height) { + row_pointer = (JSAMPROW) &image_buffer[cinfo->next_scanline * size * 3]; + jpeg_write_scanlines(cinfo, &row_pointer, 1); + } +} + +void finalize_compression(struct jpeg_compress_struct *cinfo, FILE *outfile) { + jpeg_finish_compress(cinfo); + fclose(outfile); + jpeg_destroy_compress(cinfo); +} + +void save_image_as_jpeg(unsigned char* image_buffer, int size, const char* unique_output_path, int quality) { + struct jpeg_compress_struct cinfo; + struct jpeg_error_mgr jerr; + FILE *outfile = fopen(unique_output_path, "wb"); + + handle_error(outfile, image_buffer); + setup_compression(&cinfo, &jerr, outfile, size, quality); + write_scanlines(&cinfo, image_buffer, size); + finalize_compression(&cinfo, outfile); + + free(image_buffer); +} + +void generate_bloated_jpeg(int size, RGB* color_list, int num_colors, int block_size, const char* output_path, int quality, int image_index, const char* folder) { + if (size % block_size != 0) { + fprintf(stderr, "Size must be divisible by block_size\n"); + exit(EXIT_FAILURE); + } + + create_folder_if_not_exists(folder); + + char unique_output_path[1024]; + generate_image_filename(unique_output_path, sizeof(unique_output_path), folder, image_index); + + unsigned char* image_buffer = allocate_image_buffer(size); + + fill_image_with_colors(image_buffer, size, color_list, num_colors, block_size); + + save_image_as_jpeg(image_buffer, size, unique_output_path, quality); + + printf("Image %d saved to %s\n", image_index, unique_output_path); +} + +void allocate_color_list(int num_colors, RGB** color_list) { + *color_list = malloc(num_colors * sizeof(RGB)); + if (!(*color_list)) { + fprintf(stderr, "Error allocating memory\n"); + exit(EXIT_FAILURE); + } +} + +void parse_single_color(const char* color_str, RGB* color) { + unsigned int r, g, b; + if (sscanf(color_str, "#%02x%02x%02x", &r, &g, &b) != 3) { + fprintf(stderr, "Invalid color format: %s\n", color_str); + exit(EXIT_FAILURE); + } + *color = (RGB){ r, g, b }; +} + +void parse_color_list(int argc, char* argv[], int* num_colors, RGB** color_list) { + *num_colors = argc - 6; + allocate_color_list(*num_colors, color_list); + for (int i = 0; i < *num_colors; ++i) { + parse_single_color(argv[6 + i], &(*color_list)[i]); + } +} + +void parse_default_colors(int* num_colors, RGB** color_list) { + const char* default_colors[] = { "#000000", "#FFFFFF" }; + *num_colors = sizeof(default_colors) / sizeof(default_colors[0]); + allocate_color_list(*num_colors, color_list); + for (int i = 0; i < *num_colors; ++i) { + parse_single_color(default_colors[i], &(*color_list)[i]); + } +} + +void parse_colors(int argc, char* argv[], int* num_colors, RGB** color_list) { + if (argc > 6) { + parse_color_list(argc, argv, num_colors, color_list); + } else { + parse_default_colors(num_colors, color_list); + } +} + +void parse_arguments(int argc, char* argv[], int* num_images, int* size, int* block_size, int* quality, const char** output_path) { + // Default values + *num_images = 1; + *size = 1000; + *block_size = 25; + *quality = 100; + *output_path = "output.png"; + + if (argc > 1) *num_images = atoi(argv[1]); + if (argc > 2) *size = atoi(argv[2]); + if (argc > 3) *block_size = atoi(argv[3]); + if (argc > 4) *quality = atoi(argv[4]); + if (argc > 5) *output_path = argv[5]; +} + +void create_output_folder(char *folder, size_t folder_size) { + time_t now = time(NULL); + struct tm *t = localtime(&now); + strftime(folder, folder_size, "generated_images_%Y%m%d_%H%M%S", t); +} + +int handle_help_option(int argc, char *argv[]) { + if (argc > 1 && (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0)) { + print_usage(argv[0]); + return 1; + } + return 0; +} + +int main(int argc, char *argv[]) { + srand(time(NULL)); + if (handle_help_option(argc, argv)) { + return EXIT_SUCCESS; + } + + // Start time measurement + clock_t start_time = clock(); + + int num_images, size, block_size, quality; + const char *output_path; + parse_arguments(argc, argv, &num_images, &size, &block_size, &quality, &output_path); + + RGB *color_list; + int num_colors; + parse_colors(argc, argv, &num_colors, &color_list); + + char folder[64]; + create_output_folder(folder, sizeof(folder)); + + for (int i = 1; i <= num_images; ++i) { + generate_bloated_jpeg(size, color_list, num_colors, block_size, output_path, quality, i, folder); + } + + free(color_list); + + // End time measurement + clock_t end_time = clock(); + double execution_time = (double)(end_time - start_time) / CLOCKS_PER_SEC; + printf("Generated %d images in %f seconds!\n", num_images, execution_time); + return EXIT_SUCCESS; +}