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/* See LICENSE file for copyright and license details. */
#ifndef TYPE
#include "common.h"
USAGE("[-c]")
static int per_channel = 0;
#define FILE "blind-matrix-translate.c"
#include "define-functions.h"
int
main(int argc, char *argv[])
{
struct stream stream;
void (*process)(struct stream *stream);
ARGBEGIN {
case 'c':
per_channel = 1;
break;
default:
usage();
} ARGEND;
if (argc)
usage();
eopen_stream(&stream, NULL);
if (stream.width > 2 || stream.height > 2 || stream.width * stream.height != 2)
eprintf("<stdin>: each frame must contain exactly 2 pixels\n");
stream.width = 3;
stream.height = 3;
fprint_stream_head(stdout, &stream);
efflush(stdout, "<stdout>");
if (stream.encoding == DOUBLE)
process = process_lf;
else if (stream.encoding == FLOAT)
process = process_f;
else
eprintf("pixel format %s is not supported, try xyza\n", stream.pixfmt);
process(&stream);
return 0;
}
#else
static void
PROCESS(struct stream *stream)
{
typedef TYPE pixel_t[4];
pixel_t matrix[9];
pixel_t buf[2];
size_t i;
for (i = 0; i < stream->n_chan; i++) {
matrix[0][i] = 1, matrix[1][i] = 0, matrix[2][i] = 0;
matrix[3][i] = 0, matrix[4][i] = 1, matrix[5][i] = 0;
matrix[6][i] = 0, matrix[7][i] = 0, matrix[8][i] = 1;
}
while (eread_frame(stream, buf)) {
if (per_channel) {
for (i = 0; i < stream->n_chan; i++) {
matrix[2][i] = buf[0][i];
matrix[5][i] = buf[1][i];
}
} else {
buf[0][1] *= buf[0][3];
buf[1][1] *= buf[1][3];
for (i = 0; i < stream->n_chan; i++) {
matrix[2][i] = buf[0][1];
matrix[5][i] = buf[1][1];
}
}
ewriteall(STDOUT_FILENO, matrix, sizeof(matrix), "<stdout>");
}
}
#endif
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