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/* See LICENSE file for copyright and license details. */
#ifndef TYPE
#include "common.h"
USAGE("[-e] [theta0-stream]")
static int equal = 0;
#define FILE "blind-sinc-wave.c"
#include "define-functions.h"
int
main(int argc, char *argv[])
{
struct stream stream, theta0;
int have_theta0;
void (*process)(struct stream *grad, struct stream *theta0);
ARGBEGIN {
case 'e':
equal = 1;
break;
default:
usage();
} ARGEND;
if (argc > 1)
usage();
eopen_stream(&stream, NULL);
if ((have_theta0 = argc == 1)) {
eopen_stream(&theta0, argv[0]);
if (theta0.width != 1 || theta0.height != 1)
eprintf("theta0-stream must be of dimension 1x1\n");
}
SELECT_PROCESS_FUNCTION(&stream);
CHECK_CHANS(&stream, == 3, == 1);
CHECK_N_CHAN(&stream, 4, 4);
if (have_theta0 && strcmp(stream.pixfmt, theta0.pixfmt))
eprintf("videos use incompatible pixel formats\n");
echeck_dimensions(&stream, WIDTH | HEIGHT, NULL);
fprint_stream_head(stdout, &stream);
efflush(stdout, "<stdout>");
process(&stream, have_theta0 ? &theta0 : NULL);
return 0;
}
#else
static void
PROCESS(struct stream *grad, struct stream *theta0)
{
size_t i, n, m = 0;
TYPE *theta0xyza;
TYPE x, theta0x = 0;
TYPE y, theta0y = 0;
TYPE z, theta0z = 0;
TYPE a, theta0a = 0;
do {
if (!m) {
m = grad->frame_size;
if (theta0) {
while (theta0->ptr < theta0->frame_size)
if (!eread_stream(theta0, theta0->frame_size - theta0->ptr))
return;
theta0xyza = (TYPE *)theta0->buf;
theta0x = (theta0xyza)[0];
theta0y = (theta0xyza)[1];
theta0z = (theta0xyza)[2];
theta0a = (theta0xyza)[3];
memmove(theta0->buf, theta0->buf + theta0->frame_size,
theta0->ptr -= theta0->frame_size);
}
}
n = MIN(grad->ptr, m) / grad->pixel_size;
if (equal) {
for (i = 0; i < n; i++) {
a = ((TYPE *)(grad->buf))[4 * i + 3];
a = (a ? sin(a + theta0y) / a : sin(a + theta0y)) / 2 + (TYPE)0.5;
((TYPE *)(grad->buf))[4 * i + 0] = a;
((TYPE *)(grad->buf))[4 * i + 1] = a;
((TYPE *)(grad->buf))[4 * i + 2] = a;
((TYPE *)(grad->buf))[4 * i + 3] = a;
}
} else {
for (i = 0; i < n; i++) {
x = ((TYPE *)(grad->buf))[4 * i + 0];
y = ((TYPE *)(grad->buf))[4 * i + 1];
z = ((TYPE *)(grad->buf))[4 * i + 2];
a = ((TYPE *)(grad->buf))[4 * i + 3];
x = (x ? sin(x + theta0x) / x : sin(x + theta0x)) / 2 + (TYPE)0.5;
y = (y ? sin(y + theta0y) / y : sin(y + theta0y)) / 2 + (TYPE)0.5;
z = (z ? sin(z + theta0z) / z : sin(z + theta0z)) / 2 + (TYPE)0.5;
a = (a ? sin(a + theta0a) / a : sin(a + theta0a)) / 2 + (TYPE)0.5;
((TYPE *)(grad->buf))[4 * i + 0] = x;
((TYPE *)(grad->buf))[4 * i + 1] = y;
((TYPE *)(grad->buf))[4 * i + 2] = z;
((TYPE *)(grad->buf))[4 * i + 3] = a;
}
}
n *= grad->pixel_size;
m -= n;
ewriteall(STDOUT_FILENO, grad->buf, n, "<stdout>");
memmove(grad->buf, grad->buf + n, grad->ptr -= n);
} while (eread_stream(grad, SIZE_MAX));
if (grad->ptr)
eprintf("%s: incomplete frame\n", grad->file);
}
#endif
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