From b518ce8977c0b97dd2236fc8cbc7dad1dd70511b Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 2 Jun 2017 21:00:47 +0200 Subject: Add blind-disperse, blind-split-rows, and blind-split-cols MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/blind-split-rows.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 src/blind-split-rows.c (limited to 'src/blind-split-rows.c') diff --git a/src/blind-split-rows.c b/src/blind-split-rows.c new file mode 100644 index 0000000..3ad1e3d --- /dev/null +++ b/src/blind-split-rows.c @@ -0,0 +1,47 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + +USAGE("(file rows) ...") + +int +main(int argc, char *argv[]) +{ + struct stream stream; + size_t *rows, period = 0, parts, i; + int *fds; + + UNOFLAGS(argc % 2 || !argc); + + eopen_stream(&stream, NULL); + + parts = (size_t)argc / 2; + rows = alloca(parts * sizeof(*rows)); + fds = alloca(parts * sizeof(*fds)); + + for (i = 0; i < parts; i++) { + fds[i] = eopen(argv[i * 2], O_WRONLY | O_CREAT | O_TRUNC, 0666); + rows[i] = etozu_arg("rows", argv[i * 2 + 1], 1, SIZE_MAX); + } + for (i = 0; i < parts; i++) { + if (rows[i] > SIZE_MAX - period) + goto bad_row_count; + period += rows[i]; + } + if (period != stream.height) + goto bad_row_count; + + for (i = 0; i < parts; i++) + if (DPRINTF_HEAD(fds[i], stream.frames, stream.width, rows[i], stream.pixfmt) < 0) + eprintf("dprintf %s:", argv[i * 2]); + for (i = 0; i < parts; i++, i = i == parts ? 0 : i) + if (esend_rows(&stream, fds[i], rows[i], argv[i * 2]) != rows[i]) + break; + for (i = 0; i < parts; i++) + close(fds[i]); + + return 0; + +bad_row_count: + eprintf("the sum of all rows must add up to the height of the input video\n"); + return 1; +} -- cgit v1.2.3-70-g09d2