1 files changed, 65 insertions, 0 deletions
diff --git a/src/vu-concat.c b/src/vu-concat.c
new file mode 100644
index 0000000..3ad9222
--- /dev/null
+++ b/src/vu-concat.c
@@ -0,0 +1,65 @@
+/* See LICENSE file for copyright and license details. */
+#include "arg.h"
+#include "stream.h"
+#include "util.h"
+
+#include <fcntl.h>
+#include <inttypes.h>
+#include <string.h>
+#include <unistd.h>
+
+static void
+usage(void)
+{
+	eprintf("usage: %s first-stream ... last-stream\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	struct stream stream, refstream;
+	size_t ptr;
+	ssize_t r;
+	int i;
+
+	ARGBEGIN {
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc < 2)
+		usage();
+
+	for (i = 0; i < argc; i++) {
+		stream.file = argv[i];
+		stream.fd = open(stream.file, O_RDONLY);
+		if (stream.fd < 0)
+			eprintf("open %s:", stream.file);
+		einit_stream(&stream);
+
+		if (!i) {
+			memcpy(&refstream, &stream, sizeof(stream));
+			fprint_stream_head(stdout, &stream);
+			fflush(stdout);
+			if (ferror(stdout))
+				eprintf("<stdout>:");
+		} else {
+			if (stream.width != refstream.width || stream.height != refstream.height)
+				eprintf("videos do not have the same geometry\n");
+			if (strcmp(stream.pixfmt, refstream.pixfmt))
+				eprintf("videos use incompatible pixel formats\n");
+		}
+
+		for (; eread_stream(&stream, SIZE_MAX); stream.ptr = 0) {
+			for (ptr = 0;; ptr += (size_t)r) {
+				r = write(STDOUT_FILENO, stream.buf + ptr, stream.ptr - ptr);
+				if (r < 0)
+					eprintf("write <stdout>");
+			}
+		}
+
+		close(stream.fd);
+	}
+
+	return 0;
+}