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/* See LICENSE file for copyright and license details. */
#include <arpa/inet.h>
#include <errno.h>
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "util.h"
static void
usage(void)
{
fprintf(stderr, "usage: %s\n", argv0);
exit(1);
}
int
main(int argc, char *argv[])
{
size_t rowlen;
uint32_t width, height, i;
uint16_t *row;
/* arguments */
argv0 = argv[0], argc--, argv++;
if (argc) {
usage();
}
/* prepare */
ff_read_header(&width, &height);
row = ereallocarray(NULL, width, (sizeof("RGBA") - 1) * sizeof(uint16_t));
rowlen = width * (sizeof("RGBA") - 1);
/* write data */
printf("P7\n"
"WIDTH %" PRIu32 "\n"
"HEIGHT %" PRIu32 "\n"
"DEPTH 4\n" /* number of channels */
"MAXVAL 65535\n"
"TUPLTYPE RGB_ALPHA\n"
"ENDHDR\n",
width, height);
for (i = 0; i < height; i++) {
if (fread(row, sizeof(uint16_t), rowlen, stdin) != rowlen) {
if (ferror(stdin)) {
fprintf(stderr, "%s: fread: %s\n", argv0, strerror(errno));
} else {
fprintf(stderr, "%s: unexpected end of file\n", argv0);
}
return 1;
}
if (fwrite(row, sizeof(uint16_t), rowlen, stdout) != rowlen) {
fprintf(stderr, "%s: fwrite: %s\n", argv0, strerror(errno));
return 1;
}
}
return fshut(stdout, "<stdout>");
}
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