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/* See LICENSE file for copyright and license details. */
#ifndef TYPE
#include "common.h"
USAGE("[-d] frame-rate ffmpeg-arguments ...")
static int draft = 0;
static int fd;
#define FILE "blind-to-video.c"
#include "define-functions.h"
int
main(int argc, char *argv[])
{
struct stream stream;
char geometry[2 * INTSTRLEN(size_t) + 2];
char *frame_rate;
const char **cmd;
size_t n = 0;
int status, pipe_rw[2];
pid_t pid;
void (*process)(struct stream *stream, size_t n);
ARGBEGIN {
case 'd':
draft = 1;
break;
default:
usage();
} ARGEND;
if (argc < 2)
usage();
frame_rate = *argv++, argc--;
cmd = ecalloc((size_t)argc + 12, sizeof(*cmd));
cmd[n++] = "ffmpeg";
cmd[n++] = "-f", cmd[n++] = "rawvideo";
cmd[n++] = "-pix_fmt", cmd[n++] = "ayuv64le";
cmd[n++] = "-r", cmd[n++] = frame_rate;
cmd[n++] = "-s:v", cmd[n++] = geometry;
cmd[n++] = "-i", cmd[n++] = "-";
memcpy(cmd + n, argv, (size_t)argc * sizeof(*cmd));
eopen_stream(&stream, NULL);
sprintf(geometry, "%zux%zu", stream.width, stream.height);
if (!strcmp(stream.pixfmt, "xyza"))
process = process_lf;
else if (!strcmp(stream.pixfmt, "xyza f"))
process = process_f;
else
eprintf("pixel format %s is not supported, try xyza\n", stream.pixfmt);
epipe(pipe_rw);
pid = efork();
if (!pid) {
pdeath(SIGKILL);
close(pipe_rw[1]);
edup2(pipe_rw[0], STDIN_FILENO);
close(pipe_rw[0]);
eexecvp("ffmpeg", (char **)(void *)cmd);
}
free(cmd);
close(pipe_rw[0]);
fd = pipe_rw[1];
process_stream(&stream, process);
close(fd);
ewaitpid(pid, &status, 0);
return !!status;
}
#else
static void
PROCESS(struct stream *stream, size_t n)
{
char *buf = stream->buf;
TYPE *pixel, r, g, b;
uint16_t *pixels, *end;
uint16_t pixbuf[BUFSIZ / sizeof(uint16_t)];
long int a, y, u, v;
size_t ptr;
pixels = pixbuf;
end = pixbuf + ELEMENTSOF(pixbuf);
if (draft) {
for (ptr = 0; ptr < n; ptr += 4 * sizeof(TYPE)) {
pixel = (TYPE *)(buf + ptr);
ciexyz_to_scaled_yuv(pixel[0], pixel[1], pixel[2], &r, &g, &b);
y = (long int)r + 16L * 256L;
u = (long int)g + 128L * 256L;
v = (long int)b + 128L * 256L;
*pixels++ = 0xFFFFU;
*pixels++ = htole((uint16_t)CLIP(0, y, 0xFFFFL));
*pixels++ = htole((uint16_t)CLIP(0, u, 0xFFFFL));
*pixels++ = htole((uint16_t)CLIP(0, v, 0xFFFFL));
if (pixels == end)
ewriteall(fd, pixels = pixbuf, sizeof(pixbuf), "<subprocess>");
}
} else {
for (ptr = 0; ptr < n; ptr += 4 * sizeof(TYPE)) {
pixel = (TYPE *)(buf + ptr);
a = (long int)(pixel[3] * 0xFFFFL);
ciexyz_to_srgb(pixel[0], pixel[1], pixel[2], &r, &g, &b);
r = srgb_encode(r);
g = srgb_encode(g);
b = srgb_encode(b);
srgb_to_yuv(r, g, b, pixel + 0, pixel + 1, pixel + 2);
y = (long int)(pixel[0] * 0xFFFFL) + 16L * 256L;
u = (long int)(pixel[1] * 0xFFFFL) + 128L * 256L;
v = (long int)(pixel[2] * 0xFFFFL) + 128L * 256L;
*pixels++ = htole((uint16_t)CLIP(0, a, 0xFFFFL));
*pixels++ = htole((uint16_t)CLIP(0, y, 0xFFFFL));
*pixels++ = htole((uint16_t)CLIP(0, u, 0xFFFFL));
*pixels++ = htole((uint16_t)CLIP(0, v, 0xFFFFL));
if (pixels == end)
ewriteall(fd, pixels = pixbuf, sizeof(pixbuf), "<subprocess>");
}
}
ewriteall(fd, pixbuf, (size_t)(pixels - pixbuf) * sizeof(*pixels), "<subprocess>");
}
#endif
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