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/* See LICENSE file for copyright and license details. */
#include "arg.h"
#include "stream.h"
#include "util.h"
#include <inttypes.h>
#include <string.h>
#include <unistd.h>
#define eprintf(...) enprintf(2, __VA_ARGS__)
static void
usage(void)
{
eprintf("usage: %s width height pixel-format ...\n", argv0);
}
int
main(int argc, char *argv[])
{
struct stream stream;
size_t ptr, n, w;
ssize_t r;
int i, anything = 0;
char *p;
ARGBEGIN {
default:
usage();
} ARGEND;
if (argc < 3)
usage();
stream.frames = 1;
stream.fd = STDIN_FILENO;
stream.file = "<stdin>";
stream.pixfmt[0] = '\0';
if (tozu(argv[0], 1, SIZE_MAX, &stream.width))
eprintf("the width must be an integer in [1, %zu]\n", SIZE_MAX);
if (tozu(argv[1], 1, SIZE_MAX, &stream.height))
eprintf("the height must be an integer in [1, %zu]\n", SIZE_MAX);
argv += 2, argc -= 2;
n = (size_t)argc - 1;
for (i = 0; i < argc; i++)
n += strlen(argv[i]);
if (n < sizeof(stream.pixfmt)) {
p = stpcpy(stream.pixfmt, argv[0]);
for (i = 1; i < argc; i++) {
*p++ = ' ';
p = stpcpy(p, argv[i]);
}
}
eset_pixel_size(&stream);
fprint_stream_head(stdout, &stream);
fflush(stdout);
if (ferror(stdout))
eprintf("<stdout>:");
while (stream.height) {
stream.height--;
for (w = stream.width * stream.pixel_size; w; w -= n) {
stream.ptr = 0;
n = eread_stream(&stream, w);
if (n == 0)
goto done;
anything = 1;
for (ptr = 0; ptr < stream.ptr; ptr += (size_t)r) {
r = write(STDOUT_FILENO, stream.buf + ptr, stream.ptr - ptr);
if (r < 0)
eprintf("write <stdin>:");
}
}
}
done:
if (stream.height || w)
eprintf("incomplete frame\n");
return !anything;
}
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