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/* See LICENSE file for copyright and license details. */
#ifndef TYPE
#include "common.h"
USAGE("[-cd]")
static int per_channel = 0;
static int in_degrees = 0;
#define FILE "blind-matrix-rotate.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;
case 'd':
in_degrees = 1;
break;
default:
usage();
} ARGEND;
if (argc)
usage();
eopen_stream(&stream, NULL);
SELECT_PROCESS_FUNCTION(&stream);
CHECK_CHANS(&stream, == 3, == 1);
if (stream.width != 1 || stream.height != 1)
eprintf("<stdin>: each frame must contain exactly 1 pixels\n");
stream.width = 3;
stream.height = 3;
fprint_stream_head(stdout, &stream);
efflush(stdout, "<stdout>");
process(&stream);
return 0;
}
#else
static void
PROCESS(struct stream *stream)
{
typedef TYPE pixel_t[4];
pixel_t matrix[9];
pixel_t buf;
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 && in_degrees) {
for (i = 0; i < stream->n_chan; i++) {
matrix[4][i] = matrix[0][i] = degcos(buf[i]);
matrix[3][i] = -(matrix[1][i] = degsin(buf[i]));
}
} else if (per_channel) {
for (i = 0; i < stream->n_chan; i++) {
matrix[4][i] = matrix[0][i] = cos(buf[i]);
matrix[3][i] = -(matrix[1][i] = sin(buf[i]));
}
} else {
buf[1] *= buf[3];
if (in_degrees) {
matrix[4][0] = matrix[0][0] = degcos(buf[1]);
matrix[3][0] = -(matrix[1][0] = degsin(buf[1]));
} else {
matrix[4][0] = matrix[0][0] = cos(buf[1]);
matrix[3][0] = -(matrix[1][0] = sin(buf[1]));
}
for (i = 0; i < stream->n_chan; i++) {
matrix[0][i] = matrix[0][0];
matrix[1][i] = matrix[1][0];
matrix[3][i] = matrix[3][0];
matrix[4][i] = matrix[4][0];
}
}
ewriteall(STDOUT_FILENO, matrix, sizeof(matrix), "<stdout>");
}
}
#endif
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