asset pipeline

1 files changed, 73 insertions, 0 deletions

diff --git a/utl/rearrange.c b/utl/rearrange.c
new file mode 100644
index 0000000..1d82029
--- /dev/null
+++ b/utl/rearrange.c
@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <libplum.h>
+
+int main(int const argc, char *const *const argv) {
+	if (argc < 3) {
+		fprintf(stderr, "usage: %s <OUT.png> <IN.png>...\n", argv[0]);
+		return 1;
+	}
+	unsigned error;
+	struct plum_image *outimage = plum_new_image();
+	outimage->type = PLUM_IMAGE_PNG;
+	outimage->color_format = PLUM_COLOR_32;
+	outimage->frames = 1;
+	outimage->width = 128;
+	if (argc == 3) {
+		struct plum_image *inimage = plum_load_image(argv[2], PLUM_MODE_FILENAME, PLUM_COLOR_32, &error);
+		if (inimage == NULL) {
+			printf("%s: read error (%s)\n", argv[2], plum_get_error_text(error));
+			return 1;
+		}
+		outimage->height = inimage->height / 4;
+		outimage->data = plum_malloc(outimage, plum_pixel_buffer_size(outimage));
+		for (int i = 0; i < inimage->height / 32; i++) {
+			int const toy = i * outimage->width * 8;
+			for (int j = 0; j < 16; j++) {
+				int const tox = j * 8;
+				int const tiy = ((int [16]) {0, 0, 1, 3, 3, 3, 0, 2, 0, 2, 1, 1, 1, 3, 2, 2}[j]) * 8 + inimage->width * 32 * i;
+				int const tix = ((int [16]) {0, 3, 0, 3, 0, 1, 2, 3, 1, 0, 3, 2, 1, 2, 1, 2}[j]) * 8 * inimage->width;
+				for (int py = 0; py < 8; py++) {
+					int const poy = py * outimage->width;
+					int const piy = py * inimage->width;
+					for (int px = 0; px < 8; px++) {
+						outimage->data32[toy + tox + poy + px] = inimage->data32[tiy + tix + piy + px];
+					}
+				}
+			}
+		}
+		plum_destroy_image(inimage);
+		
+	} else {
+		outimage->height = (argc - 2) * 8;
+		outimage->data = plum_malloc(outimage, plum_pixel_buffer_size(outimage));
+		
+		for (int i = 2; i < argc; i++) {
+			struct plum_image *inimage = plum_load_image(argv[i], PLUM_MODE_FILENAME, PLUM_COLOR_32, &error);
+			if (inimage == NULL) {
+				printf("%s: read error (%s)\n", argv[i], plum_get_error_text(error));
+				return 1;
+			}
+			int const toy = (i - 2) * outimage->width * 8;
+			for (int j = 0; j < 16; j++) {
+				int const tox = j * 8;
+				int const tiy = ((int [16]) {0, 0, 1, 3, 3, 3, 0, 2, 0, 2, 1, 1, 1, 3, 2, 2}[j]) * 8;
+				int const tix = ((int [16]) {0, 3, 0, 3, 0, 1, 2, 3, 1, 0, 3, 2, 1, 2, 1, 2}[j]) * 8 * inimage->width;
+				for (int py = 0; py < 8; py++) {
+					int const poy = py * outimage->width;
+					int const piy = py * inimage->width;
+					for (int px = 0; px < 8; px++) {
+						outimage->data32[toy + tox + poy + px] = inimage->data32[tiy + tix + piy + px];
+					}
+				}
+			}
+			plum_destroy_image(inimage);
+		}
+	}
+	plum_store_image(outimage, argv[1], PLUM_MODE_FILENAME, &error);
+	if (error) {
+		printf("%s: write error (%s)\n", argv[1], plum_get_error_text(error));
+		return 1;
+	}
+	plum_destroy_image(outimage);
+	return 0;
+}