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/* See LICENSE file for copyright and license details. */
#include "common.h"
USAGE("right-hand-stream")
#define PROCESS(TYPE, SUFFIX)\
static void\
process_##SUFFIX(struct stream *left, struct stream *right, size_t n)\
{\
size_t i;\
TYPE *lx, *ly, *lz, *la, *rx, *ry, *rz, *ra, x, y, z, a;\
for (i = 0; i < n; i += 4 * sizeof(TYPE)) {\
lx = ((TYPE *)(left->buf + i)) + 0, rx = ((TYPE *)(right->buf + i)) + 0;\
ly = ((TYPE *)(left->buf + i)) + 1, ry = ((TYPE *)(right->buf + i)) + 1;\
lz = ((TYPE *)(left->buf + i)) + 2, rz = ((TYPE *)(right->buf + i)) + 2;\
la = ((TYPE *)(left->buf + i)) + 3, ra = ((TYPE *)(right->buf + i)) + 3;\
x = *ly * *rz - *lz * *ry;\
y = *lz * *rx - *lx * *rz;\
z = *lx * *ry - *ly * *rx;\
a = *la * *ra;\
*lx = x;\
*ly = y;\
*lz = z;\
*la = a;\
}\
}
PROCESS(double, lf)
PROCESS(float, f)
int
main(int argc, char *argv[])
{
struct stream left, right;
void (*process)(struct stream *left, struct stream *right, size_t n);
UNOFLAGS(argc != 1);
eopen_stream(&left, NULL);
eopen_stream(&right, argv[0]);
if (!strcmp(left.pixfmt, "xyza"))
process = process_lf;
else if (!strcmp(left.pixfmt, "xyza f"))
process = process_f;
else
eprintf("pixel format %s is not supported, try xyza\n", left.pixfmt);
fprint_stream_head(stdout, &left);
efflush(stdout, "<stdout>");
process_two_streams(&left, &right, STDOUT_FILENO, "<stdout>", process);
return 0;
}
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