diff options
Diffstat (limited to 'cqrlogo.c')
| -rw-r--r-- | cqrlogo.c | 80 |
1 files changed, 40 insertions, 40 deletions
@@ -33,16 +33,16 @@ int generate_png (struct bitmap_t *bitmap, const char *uri) { png_infop info_ptr = NULL; png_byte ** row_pointers = NULL; int x, y, depth = 8; - + if ((png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL)) == NULL) return 1; - + if ((info_ptr = png_create_info_struct (png_ptr)) == NULL || (setjmp (png_jmpbuf (png_ptr)))) { png_destroy_write_struct (&png_ptr, &info_ptr); return 1; } - + png_set_IHDR (png_ptr, info_ptr, bitmap->width, bitmap->height, depth, PNG_COLOR_TYPE_GRAY, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT); @@ -80,7 +80,7 @@ int generate_png (struct bitmap_t *bitmap, const char *uri) { *row++ = bitmap->pixel[y * bitmap->width + x]; } } - + png_init_io (png_ptr, stdout); png_set_rows (png_ptr, info_ptr, row_pointers); png_write_png (png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL); @@ -89,7 +89,7 @@ int generate_png (struct bitmap_t *bitmap, const char *uri) { png_free (png_ptr, row_pointers[y]); } png_free (png_ptr, row_pointers); - + return 0; } @@ -121,38 +121,38 @@ void bitmap_free(struct bitmap_t * bitmap) { /*** encode_qrcode ***/ struct bitmap_t * encode_qrcode (const char *text, unsigned int scale, unsigned int border, unsigned int level) { - QRcode *qrcode; - struct bitmap_t *bitmap, *scaled; - int i, j, k, l; - unsigned char *data; - - qrcode = QRcode_encodeString8bit(text, 0, level); - - /* this happens if the string is too long - * possibly we have an URL (referer) that is too long, so the code - * automatically falls back to http_server (see main()) */ - if (qrcode == NULL) - return NULL; - - data = qrcode->data; - - /* wirte QR code to bitmap */ - if ((bitmap = bitmap_new(qrcode->width + border * 2, qrcode->width + border * 2)) == NULL) - return NULL; - for (i = border; i < qrcode->width + border; i++) - for (j = border; j < qrcode->width + border; j++) { - bitmap->pixel[i * (qrcode->width + border * 2) + j] = !(*data & 0x1) * 0xff; - data++; - } - - QRcode_free(qrcode); - - if (scale == 1) - return bitmap; - - /* scale bitmap */ - if ((scaled = bitmap_new(bitmap->width * scale, bitmap->height * scale)) == NULL) - return NULL; + QRcode *qrcode; + struct bitmap_t *bitmap, *scaled; + int i, j, k, l; + unsigned char *data; + + qrcode = QRcode_encodeString8bit(text, 0, level); + + /* this happens if the string is too long + * possibly we have an URL (referer) that is too long, so the code + * automatically falls back to http_server (see main()) */ + if (qrcode == NULL) + return NULL; + + data = qrcode->data; + + /* wirte QR code to bitmap */ + if ((bitmap = bitmap_new(qrcode->width + border * 2, qrcode->width + border * 2)) == NULL) + return NULL; + for (i = border; i < qrcode->width + border; i++) + for (j = border; j < qrcode->width + border; j++) { + bitmap->pixel[i * (qrcode->width + border * 2) + j] = !(*data & 0x1) * 0xff; + data++; + } + + QRcode_free(qrcode); + + if (scale == 1) + return bitmap; + + /* scale bitmap */ + if ((scaled = bitmap_new(bitmap->width * scale, bitmap->height * scale)) == NULL) + return NULL; for (i = 0; i < bitmap->height; i++) for (j = 0; j < bitmap->width; j++) for (k = 0; k < scale; k++) @@ -161,9 +161,9 @@ struct bitmap_t * encode_qrcode (const char *text, unsigned int scale, unsigned bitmap->pixel[i * bitmap->width + j]; - bitmap_free(bitmap); - - return scaled; + bitmap_free(bitmap); + + return scaled; } /*** get_value ***/ |