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/* See LICENSE file for copyright and license details. */
#include "common.h"
USAGE("[-f frames | -f 'inf'] [-F pixel-format] -w width -h height")
static struct stream stream = { .width = 0, .height = 0, .frames = 1 };
static int inf = 0;
#define PROCESS(TYPE)\
do {\
TYPE buf[4] = {0, 0, 0, 0};\
size_t x, y;\
\
while (inf || stream.frames--) {\
for (y = 0; y < stream.height; y++) {\
buf[1] = (TYPE)y;\
for (x = 0; x < stream.width; x++) {\
buf[0] = (TYPE)x;\
if (write(STDOUT_FILENO, buf, sizeof(buf)) < 0)\
eprintf("write <stdout>:");\
}\
}\
}\
} while (0)
static void process_lf(void) {PROCESS(double);}
static void process_f(void) {PROCESS(float);}
int
main(int argc, char *argv[])
{
char *arg;
const char *pixfmt = "xyza";
void (*process)(void);
ARGBEGIN {
case 'f':
arg = UARGF();
if (!strcmp(arg, "inf"))
inf = 1, stream.frames = 0;
else
stream.frames = etozu_flag('f', arg, 1, SIZE_MAX);
break;
case 'F':
pixfmt = UARGF();
break;
case 'w':
stream.width = etozu_flag('w', UARGF(), 1, SIZE_MAX);
break;
case 'h':
stream.height = etozu_flag('h', UARGF(), 1, SIZE_MAX);
break;
default:
usage();
} ARGEND;
if (!stream.width || !stream.height || argc)
usage();
if (inf)
einf_check_fd(STDOUT_FILENO, "<stdout>");
pixfmt = get_pixel_format(pixfmt, "xyza");
if (!strcmp(pixfmt, "xyza"))
process = process_lf;
else if (!strcmp(pixfmt, "xyza f"))
process = process_f;
else
eprintf("pixel format %s is not supported, try xyza\n", pixfmt);
strcpy(stream.pixfmt, pixfmt);
fprint_stream_head(stdout, &stream);
efflush(stdout, "<stdout>");
process();
return 0;
}
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