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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/* See LICENSE file for copyright and license details. */
#include "common.h"
USAGE("pixel-format ...")
static void (*outconv)(double *xyzas, size_t n);
#define INCONV(TYPE)\
do {\
double buf[sizeof(stream->buf) / (4 * sizeof(TYPE)) * 4];\
double *interm;\
TYPE *in;\
size_t n, m;\
do {\
in = (TYPE *)stream->buf;\
interm = buf;\
n = stream->ptr / stream->pixel_size;\
for (m = n; m--; in += 4, interm += 4) { \
interm[0] = (double)(in[0]);\
interm[1] = (double)(in[1]);\
interm[2] = (double)(in[2]);\
interm[3] = (double)(in[3]);\
}\
outconv(buf, n);\
n *= stream->pixel_size;\
memmove(stream->buf, stream->buf + n, stream->ptr -= n);\
} while (eread_stream(stream, SIZE_MAX));\
if (stream->ptr)\
eprintf("%s: incomplete frame\n", stream->file);\
} while (0)
#define OUTCONV(TYPE)\
do {\
TYPE *out = alloca(n * 4 * sizeof(TYPE));\
size_t i, m = n * 4;\
for (i = 0; i < m; i++)\
out[i] = (TYPE)(xyzas[i]);\
ewriteall(STDOUT_FILENO, out, n * 4 * sizeof(TYPE), "<stdout>");\
} while (0)
static void inconv_xyza (struct stream *stream) {INCONV(double);}
static void inconv_xyzaf(struct stream *stream) {INCONV(float);}
static void outconv_xyza (double *xyzas, size_t n) {OUTCONV(double);}
static void outconv_xyzaf(double *xyzas, size_t n) {OUTCONV(float);}
int
main(int argc, char *argv[])
{
struct stream stream;
const char *pixfmt;
void (*inconv)(struct stream *stream);
UNOFLAGS(!argc);
eopen_stream(&stream, NULL);
if (!strcmp(stream.pixfmt, "xyza"))
inconv = inconv_xyza;
else if (!strcmp(stream.pixfmt, "xyza f"))
inconv = inconv_xyzaf;
else
eprintf("input pixel format %s is not supported\n", stream.pixfmt);
pixfmt = stream.pixfmt;
while (*argv)
pixfmt = get_pixel_format(*argv++, pixfmt);
if (!strcmp(pixfmt, "xyza"))
outconv = outconv_xyza;
else if (!strcmp(pixfmt, "xyza f"))
outconv = outconv_xyzaf;
else
eprintf("output pixel format %s is not supported\n", pixfmt);
strcpy(stream.pixfmt, pixfmt);
fprint_stream_head(stdout, &stream);
efflush(stdout, "<stdout>");
inconv(&stream);
return 0;
}
|
