1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* 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, j, s = left->n_chan * sizeof(TYPE);\
TYPE v, *l, *r;\
for (i = 0; i < n; i += s) {\
l = (TYPE *)(left->buf + i);\
r = (TYPE *)(right->buf + i);\
v = 0;\
for (j = 0; j < left->n_chan; j++)\
v += l[j] * r[j];\
for (j = 0; j < left->n_chan; j++)\
l[j] = v;\
}\
}
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 (left.encoding == DOUBLE)
process = process_lf;
else if (left.encoding == FLOAT)
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;
}
|
