blind

commit 928a74635987d41b0f5d2fedfc1b8dc06014766c
parent a60aa945f2f443b0acf5d1db5bf344023b483c65
Author: Mattias Andrée <maandree@kth.se>
Date:   Thu, 12 Jan 2017 08:30:57 +0100

Add vu-to-text

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

Diffstat:
M
Makefile
 | 
1
+
M
TODO
 | 
1
-
A
src/vu-to-text.c
 | 
51
+++++++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 52 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
@@ -26,6 +26,7 @@ BIN =\
 	vu-split\
 	vu-stack\
 	vu-to-image\
+	vu-to-text\
 	vu-transpose\
 	vu-write-head
 
diff --git a/TODO b/TODO
@@ -4,7 +4,6 @@ vu-chroma-key		replace a chroma with transparency
 vu-primary-key		replace a primary with transparency, -g for greyscaled images
 vu-from-video		use ffmpeg to convert from another format
 vu-to-video		use ffmpeg to convert to another format
-vu-to-text		convert each pixel to text
 vu-from-text		convert each pixel from text
 vu-primaries		given three selectable primaries split the video into three side-by-side which
 				only one primary active
diff --git a/src/vu-to-text.c b/src/vu-to-text.c
@@ -0,0 +1,51 @@
+/* See LICENSE file for copyright and license details. */
+#include "stream.h"
+#include "util.h"
+
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+USAGE("")
+
+static void
+process_xyza(struct stream *stream, size_t n)
+{
+	size_t i;
+	for (i = 0; i < n; i += stream->pixel_size)
+		printf("%lf %lf %lf %lf\n",
+		       ((double *)(stream->buf + i))[0],
+		       ((double *)(stream->buf + i))[1],
+		       ((double *)(stream->buf + i))[2],
+		       ((double *)(stream->buf + i))[3]);
+}
+
+int
+main(int argc, char *argv[])
+{
+	struct stream stream;
+	size_t n;
+	void (*process)(struct stream *stream, size_t n) = NULL;
+
+	ENOFLAGS(argc);
+
+	stream.file = "<stdin>";
+	stream.fd = STDIN_FILENO;
+	einit_stream(&stream);
+
+	if (!strcmp(stream.pixfmt, "xyza"))
+		process = process_xyza;
+	else
+		eprintf("pixel format %s is not supported, try xyza\n", stream.pixfmt);
+
+	printf("%zu %zu %zu %s", stream.frames, stream.width, stream.height, stream.pixfmt);
+
+	while ((n = eread_stream(&stream, SIZE_MAX))) {
+		n -= n % stream.pixel_size;
+		process(&stream, n);
+		memmove(stream.buf, stream.buf + n, stream.ptr -= n);
+	}
+
+	efshut(stdout, "<stdout>");
+	return 0;
+}