static timezone_t
tzalloc(char const *val)
{
static char **fakeenv;
char **env = fakeenv;
char *env0;
if (! env) {
char **e = environ;
int to;
while (*e++)
continue;
env = malloc(sumsize(sizeof *environ,
(e - environ) * sizeof *environ));
if (! env) {
err(EXIT_FAILURE, "malloc");
}
to = 1;
for (e = environ; (env[to] = *e); e++)
to += strncmp(*e, "TZ=", 3) != 0;
}
env0 = malloc(sumsize(sizeof "TZ=", strlen(val)));
if (! env0) {
err(EXIT_FAILURE, "malloc");
}
env[0] = strcat(strcpy(env0, "TZ="), val);
environ = fakeenv = env;
tzset();
return env;
}
/* Return a time zone abbreviation. If the abbreviation needs to be
saved, use *BUF (of size *BUFALLOC) to save it, and return the
abbreviation in the possibly-reallocated *BUF. Otherwise, just
return the abbreviation. Get the abbreviation from TMP.
Exit on memory allocation failure. */
static char const *
saveabbr(char **buf, size_t *bufalloc, struct tm const *tmp)
{
char const *ab = abbr(tmp);
if (HAVE_LOCALTIME_RZ)
return ab;
else {
size_t ablen = strlen(ab);
if (*bufalloc <= ablen) {
free(*buf);
/* Make the new buffer at least twice as long as the
old, to avoid O(N**2) behavior on repeated calls. */
*bufalloc = sumsize(*bufalloc, ablen + 1);
*buf = xmalloc(*bufalloc);
}
return strcpy(*buf, ab);
}
}
static bool ocl_integral( InputArray _src, OutputArray _sum, OutputArray _sqsum, int sdepth, int sqdepth )
{
bool doubleSupport = ocl::Device::getDefault().doubleFPConfig() > 0;
if ( _src.type() != CV_8UC1 || (!doubleSupport && (sdepth == CV_64F || sqdepth == CV_64F)) )
return false;
static const int tileSize = 16;
String build_opt = format("-D SUM_SQUARE -D sumT=%s -D sumSQT=%s -D LOCAL_SUM_SIZE=%d%s",
ocl::typeToStr(sdepth), ocl::typeToStr(sqdepth),
tileSize,
doubleSupport ? " -D DOUBLE_SUPPORT" : "");
ocl::Kernel kcols("integral_sum_cols", ocl::imgproc::integral_sum_oclsrc, build_opt);
if (kcols.empty())
return false;
UMat src = _src.getUMat();
Size src_size = src.size();
Size bufsize(((src_size.height + tileSize - 1) / tileSize) * tileSize, ((src_size.width + tileSize - 1) / tileSize) * tileSize);
UMat buf(bufsize, sdepth);
UMat buf_sq(bufsize, sqdepth);
kcols.args(ocl::KernelArg::ReadOnly(src), ocl::KernelArg::WriteOnlyNoSize(buf), ocl::KernelArg::WriteOnlyNoSize(buf_sq));
size_t gt = src.cols, lt = tileSize;
if (!kcols.run(1, >, <, false))
return false;
ocl::Kernel krows("integral_sum_rows", ocl::imgproc::integral_sum_oclsrc, build_opt);
if (krows.empty())
return false;
Size sumsize(src_size.width + 1, src_size.height + 1);
_sum.create(sumsize, sdepth);
UMat sum = _sum.getUMat();
_sqsum.create(sumsize, sqdepth);
UMat sum_sq = _sqsum.getUMat();
krows.args(ocl::KernelArg::ReadOnlyNoSize(buf), ocl::KernelArg::ReadOnlyNoSize(buf_sq), ocl::KernelArg::WriteOnly(sum), ocl::KernelArg::WriteOnlyNoSize(sum_sq));
gt = src.rows;
return krows.run(1, >, <, false);
}
/* Show a time transition. */
static void
showtrans(char const *time_fmt, struct tm const *tm, time_t t, char const *ab,
char const *zone_name)
{
if (!tm) {
printf(tformat(), t);
putchar('\n');
} else {
char stackbuf[1000];
size_t size = sizeof stackbuf;
char *buf = stackbuf;
char *bufalloc = NULL;
while (! istrftime(buf, size, time_fmt, tm, t, ab, zone_name)) {
size = sumsize(size, size);
free(bufalloc);
buf = bufalloc = xmalloc(size);
}
puts(buf);
free(bufalloc);
}
}
