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-disperse.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/blind-disperse.c (limited to 'src/blind-disperse.c') diff --git a/src/blind-disperse.c b/src/blind-disperse.c new file mode 100644 index 0000000..b42e53c --- /dev/null +++ b/src/blind-disperse.c @@ -0,0 +1,48 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + +USAGE("(file frames) ...") + +int +main(int argc, char *argv[]) +{ + struct stream stream; + size_t *frames, *framecount, period = 0, parts, i, n; + int *fds; + + UNOFLAGS(argc % 2 || !argc); + + eopen_stream(&stream, NULL); + + parts = (size_t)argc / 2; + frames = alloca(parts * sizeof(*frames)); + framecount = alloca(parts * sizeof(*framecount)); + fds = alloca(parts * sizeof(*fds)); + + for (i = 0; i < parts; i++) { + fds[i] = eopen(argv[i * 2], O_WRONLY | O_CREAT | O_TRUNC, 0666); + frames[i] = etozu_arg("frames", argv[i * 2 + 1], 1, SIZE_MAX); + } + for (i = 0; i < parts; i++) { + if (frames[i] > SIZE_MAX - period) + eprintf("the sum of selected frame intervals exceeds %zu\n", SIZE_MAX); + period += frames[i]; + } + for (n = stream.frames / period, i = 0; i < parts; i++) + framecount[i] = n * frames[i]; + for (n = stream.frames % period, i = 0; i < parts; i++) { + framecount[i] += MIN(n, frames[i]); + n -= MIN(n, frames[i]); + } + + for (i = 0; i < parts; i++) + if (DPRINTF_HEAD(fds[i], framecount[i], stream.width, stream.height, stream.pixfmt) < 0) + eprintf("dprintf %s:", argv[i * 2]); + for (i = 0; i < parts; i++, i = i == parts ? 0 : i) + if (esend_frames(&stream, fds[i], frames[i], argv[i * 2]) != frames[i]) + break; + for (i = 0; i < parts; i++) + close(fds[i]); + + return 0; +} -- cgit v1.2.3-70-g09d2