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/* See LICENSE file for copyright and license details. */
#include "stream.h"
#include "util.h"
#include <string.h>
USAGE("pixel-format ...")
static void (*outconv)(double x, double y, double z, double a);
#define INCONV(TYPE)\
do {\
TYPE *pixel, x, y, z, a;\
size_t n;\
do {\
pixel = (TYPE *)stream->buf;\
for (n = stream->ptr / stream->pixel_size; n--; pixel += 4) {\
x = (TYPE)(pixel[0]);\
y = (TYPE)(pixel[1]);\
z = (TYPE)(pixel[2]);\
a = (TYPE)(pixel[3]);\
outconv(x, y, z, a);\
}\
n = stream->ptr - (stream->ptr % 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 pixel[4];\
pixel[0] = (TYPE)x;\
pixel[1] = (TYPE)y;\
pixel[2] = (TYPE)z;\
pixel[3] = (TYPE)a;\
ewriteall(STDOUT_FILENO, pixel, sizeof(pixel), "<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 x, double y, double z, double a) {OUTCONV(double);}
static void outconv_xyzaf(double x, double y, double z, double a) {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;
}
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