X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=qrencode-3.1.0%2Ftests%2Fcreate_frame_pattern.c;fp=qrencode-3.1.0%2Ftests%2Fcreate_frame_pattern.c;h=786309fe52732eb7af9062d7470e382bfdccc4f2;hb=39f4c44e000d410b4f63ab1fcdc4b04273ff0a83;hp=0000000000000000000000000000000000000000;hpb=afa4a2a62381d2502254a8928216f11509aa1b7d;p=glabels

diff --git a/qrencode-3.1.0/tests/create_frame_pattern.c b/qrencode-3.1.0/tests/create_frame_pattern.c
new file mode 100644
index 00000000..786309fe
--- /dev/null
+++ b/qrencode-3.1.0/tests/create_frame_pattern.c
@@ -0,0 +1,170 @@
+/*
+ * This tool creates a frame pattern data for debug purpose used by
+ * test_qrspec. test_qrspec and create_frame_pattern uses the same function
+ * of libqrencode. This means the test is meaningless if test_qrspec is run
+ * with a pattern data created by create_frame_pattern of the same version.
+ * In order to test it correctly, create a pattern data by the tool of the
+ * previous version, or use the frame data attached to the package.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <png.h>
+#include "common.h"
+#include "../qrspec.h"
+
+void append_pattern(int version, FILE *fp)
+{
+	int width;
+	unsigned char *frame;
+
+	frame = QRspec_newFrame(version);
+	width = QRspec_getWidth(version);
+	fwrite(frame, 1, width * width, fp);
+	free(frame);
+}
+
+static int writePNG(unsigned char *frame, int width, const char *outfile)
+{
+	static FILE *fp;
+	png_structp png_ptr;
+	png_infop info_ptr;
+	unsigned char *row, *p, *q;
+	int x, y, xx, yy, bit;
+	int realwidth;
+	const int margin = 0;
+	const int size = 1;
+
+	realwidth = (width + margin * 2) * size;
+	row = (unsigned char *)malloc((realwidth + 7) / 8);
+	if(row == NULL) {
+		fprintf(stderr, "Failed to allocate memory.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if(outfile[0] == '-' && outfile[1] == '\0') {
+		fp = stdout;
+	} else {
+		fp = fopen(outfile, "wb");
+		if(fp == NULL) {
+			fprintf(stderr, "Failed to create file: %s\n", outfile);
+			perror(NULL);
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+	if(png_ptr == NULL) {
+		fclose(fp);
+		fprintf(stderr, "Failed to initialize PNG writer.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	info_ptr = png_create_info_struct(png_ptr);
+	if(info_ptr == NULL) {
+		fclose(fp);
+		fprintf(stderr, "Failed to initialize PNG write.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if(setjmp(png_jmpbuf(png_ptr))) {
+		png_destroy_write_struct(&png_ptr, &info_ptr);
+		fclose(fp);
+		fprintf(stderr, "Failed to write PNG image.\n");
+		exit(EXIT_FAILURE);
+	}
+
+	png_init_io(png_ptr, fp);
+	png_set_IHDR(png_ptr, info_ptr,
+			realwidth, realwidth,
+			1,
+			PNG_COLOR_TYPE_GRAY,
+			PNG_INTERLACE_NONE,
+			PNG_COMPRESSION_TYPE_DEFAULT,
+			PNG_FILTER_TYPE_DEFAULT);
+	png_write_info(png_ptr, info_ptr);
+
+	/* top margin */
+	memset(row, 0xff, (realwidth + 7) / 8);
+	for(y=0; y<margin * size; y++) {
+		png_write_row(png_ptr, row);
+	}
+
+	/* data */
+	p = frame;
+	for(y=0; y<width; y++) {
+		bit = 7;
+		memset(row, 0xff, (realwidth + 7) / 8);
+		q = row;
+		q += margin * size / 8;
+		bit = 7 - (margin * size % 8);
+		for(x=0; x<width; x++) {
+			for(xx=0; xx<size; xx++) {
+				*q ^= (*p & 1) << bit;
+				bit--;
+				if(bit < 0) {
+					q++;
+					bit = 7;
+				}
+			}
+			p++;
+		}
+		for(yy=0; yy<size; yy++) {
+			png_write_row(png_ptr, row);
+		}
+	}
+	/* bottom margin */
+	memset(row, 0xff, (realwidth + 7) / 8);
+	for(y=0; y<margin * size; y++) {
+		png_write_row(png_ptr, row);
+	}
+
+	png_write_end(png_ptr, info_ptr);
+	png_destroy_write_struct(&png_ptr, &info_ptr);
+
+	fclose(fp);
+	free(row);
+
+	return 0;
+}
+
+void write_pattern_image(int version, const char *filename)
+{
+	int width;
+	unsigned char *frame;
+	static char str[256];
+
+	frame = QRspec_newFrame(version);
+	width = QRspec_getWidth(version);
+
+	snprintf(str, 256, "%s-%d.png", filename, version);
+	writePNG(frame, width, str);
+	free(frame);
+}
+
+void write_pattern(const char *filename)
+{
+	FILE *fp;
+	int i;
+
+	fp = fopen(filename, "wb");
+	if(fp == NULL) {
+		perror("Failed to open a file to write:");
+		abort();
+	}
+	for(i=1; i<=QRSPEC_VERSION_MAX; i++) {
+		append_pattern(i, fp);
+		write_pattern_image(i, filename);
+	}
+	fclose(fp);
+}
+
+int main(int argc, char **argv)
+{
+	if(argc < 2) {
+		printf("Create empty frame patterns.\nUsage: %s FILENAME\n", argv[0]);
+		exit(0);
+	}
+	write_pattern(argv[1]);
+	return 0;
+}