static void optimize_image(MagickWand *mw, const char *src, const char *dst,
size_t size_in, unsigned char *blob_in,
const struct imgmin_options *opt)
{
MagickWand *tmp;
size_t size_out = size_in + 1;
report_before(mw, size_in);
#ifdef IMGMIN_STANDALONE
/*
* NOTE: for now only allow use of external PNG tools in a standalone cmdline app,
* not the built-in apache -- it's slower and less trustworthy.
*/
if (strcmp("-", src) && !strcmp("PNG", MagickGetImageFormat(mw)))
{
do_png(mw, src, dst, opt);
return;
} else {
#endif
tmp = search_quality(mw, dst, opt);
#ifdef IMGMIN_STANDALONE
}
#endif
size_out = blob_write(blob_in, size_in, tmp, dst);
report_after(tmp, size_in, size_out);
DestroyMagickWand(tmp);
}
static void doit(const char *src, const char *dst, size_t oldsize,
const struct imgmin_options *opt)
{
MagickWand *mw, *tmp;
MagickBooleanType status;
double ks;
size_t newsize = oldsize + 1;
MagickWandGenesis();
mw = NewMagickWand();
/* load image... */
if (0 == strcmp("-", src))
{
/* ...from stdin */
# define BIGBUF (16 * 1024 * 1024)
char *blob = malloc(BIGBUF);
oldsize = read(STDIN_FILENO, blob, BIGBUF);
if (BIGBUF == oldsize)
{
fprintf(stderr, "Image too large for hardcoded imgmin stdin buffer\n");
exit(1);
}
MagickReadImageBlob(mw, blob, oldsize);
free(blob);
} else {
/* ...from disk */
status = MagickReadImage(mw, src);
if (status == MagickFalse)
ThrowWandException(mw);
}
ks = oldsize / 1024.;
fprintf(stderr,
"Before quality:%lu colors:%lu size:%5.1fkB type:%s ",
quality(mw),
(unsigned long)unique_colors(mw),
ks, type2str(MagickGetImageType(mw)));
tmp = search_quality(mw, dst, opt);
/* output image... */
{
unsigned char *blob = MagickGetImageBlob(tmp, &newsize);
/* if resulting image is larger than original, use original instead */
if (newsize > oldsize)
{
(void) MagickRelinquishMemory(blob);
blob = MagickGetImageBlob(mw, &newsize);
}
{
int fd;
if (0 == strcmp("-", dst))
{
fd = STDOUT_FILENO;
} else {
fd = open(dst, O_WRONLY | O_CREAT, 0644);
if (-1 == fd)
{
perror("open");
exit(1);
}
}
if ((ssize_t)newsize != write(fd, blob, newsize))
{
perror("write");
exit(1);
}
(void) MagickRelinquishMemory(blob);
if (fd != STDOUT_FILENO)
close(fd);
}
}
{
double kd = newsize / 1024.;
double ksave = ks - kd;
double kpct = ksave * 100. / ks;
fprintf(stderr,
"After quality:%lu colors:%lu size:%5.1fkB saved:%5.1fkB (%.1f%%)\n",
(unsigned long)quality(tmp),
(unsigned long)unique_colors(tmp),
kd, ksave, kpct);
}
/* tear it down */
DestroyMagickWand(tmp);
DestroyMagickWand(mw);
MagickWandTerminus();
}
