Add blind-repeat-tessellation

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 52 insertions, 0 deletions

diff --git a/src/blind-repeat-tessellation.c b/src/blind-repeat-tessellation.c
new file mode 100644
index 0000000..4e4fc60
--- /dev/null
+++ b/src/blind-repeat-tessellation.c
@@ -0,0 +1,52 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("-w width -h height")
+
+int
+main(int argc, char *argv[])
+{
+	struct stream stream;
+	size_t width = 0;
+	size_t height = 0;
+	size_t x, y, p, w;
+	char *buf;
+
+	ARGBEGIN {
+	case 'w':
+		width = etozu_flag('w', UARGF(), 1, SIZE_MAX);
+		break;
+	case 'h':
+		height = etozu_flag('h', UARGF(), 1, SIZE_MAX);
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (!width || !height || argc)
+		usage();
+
+	eopen_stream(&stream, NULL);
+	echeck_dimensions(&stream, WIDTH | HEIGHT, NULL);
+	x = stream.width,  stream.width = width;
+	y = stream.height, stream.height = height;
+	fprint_stream_head(stdout, &stream);
+	efflush(stdout, "<stdout>");
+	stream.width  = x;
+	stream.height = y;
+	buf = emalloc(stream.frame_size);
+
+	w = width % stream.width;
+	while (eread_frame(&stream, buf)) {
+		for (y = 0; y < height; y++) {
+			p = (y % stream.height) * stream.row_size;
+			for (x = 0; x < width / stream.width; x++)
+				ewriteall(STDOUT_FILENO, buf + p, stream.row_size, "<stdout>");
+			if (w)
+				ewriteall(STDOUT_FILENO, buf + p, w * stream.pixel_size, "<stdout>");
+		}
+	}
+
+	free(buf);
+	return 0;
+}