/usr/include/OpenImageIO/imagebufalgo_util.h is in libopenimageio-dev 1.6.17~dfsg0-1+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 | /*
Copyright 2013 Larry Gritz and the other authors and contributors.
All Rights Reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the software's owners nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
(This is the Modified BSD License)
*/
#ifndef OPENIMAGEIO_IMAGEBUFALGO_UTIL_H
#define OPENIMAGEIO_IMAGEBUFALGO_UTIL_H
#include <OpenImageIO/platform.h>
#include <OpenImageIO/imagebufalgo.h>
#include <OpenImageIO/thread.h>
#if OIIO_CPLUSPLUS_VERSION >= 11
# include <functional>
#else
# include <boost/bind.hpp>
#endif
OIIO_NAMESPACE_BEGIN
#if OIIO_CPLUSPLUS_VERSION >= 11
using std::bind;
using std::ref;
using std::cref;
using namespace std::placeholders;
using std::placeholders::_1;
#else
using boost::bind;
using boost::ref;
using boost::cref;
using boost::this_thread::get_id;
#endif
namespace ImageBufAlgo {
/// Helper template for generalized multithreading for image processing
/// functions. Some function/functor f is applied to every pixel the
/// region of interest roi, dividing the region into multiple threads if
/// threads != 1. Note that threads == 0 indicates that the number of
/// threads should be as set by the global OIIO "threads" attribute.
///
/// Most image operations will require additional arguments, including
/// additional input and output images or other parameters. The
/// parallel_image template can still be used by employing the
/// std::bind (or boost::bind, for C++ < 11). For example, suppose you
/// have an image operation defined as:
/// void my_image_op (ImageBuf &out, const ImageBuf &in,
/// float scale, ROI roi);
/// Then you can parallelize it as follows:
/// ImageBuf R /*result*/, A /*input*/;
/// ROI roi = get_roi (R.spec());
/// parallel_image (bind(my_image_op,ref(R), cref(A),3.14,_1),
/// roi);
///
template <class Func>
void
parallel_image (Func f, ROI roi, int nthreads=0)
{
// Special case: threads <= 0 means to use the "threads" attribute
if (nthreads <= 0)
OIIO::getattribute ("threads", nthreads);
if (nthreads <= 1 || roi.npixels() < 1000) {
// Just one thread, or a small image region: use this thread only
f (roi);
} else {
// Spawn threads by dividing the region into y bands.
OIIO::thread_group threads;
int blocksize = std::max (1, (roi.height() + nthreads - 1) / nthreads);
int roi_ybegin = roi.ybegin;
int roi_yend = roi.yend;
for (int i = 0; i < nthreads; i++) {
roi.ybegin = roi_ybegin + i * blocksize;
roi.yend = std::min (roi.ybegin + blocksize, roi_yend);
if (roi.ybegin >= roi.yend)
break; // no more work to dole out
threads.add_thread (new OIIO::thread (f, roi));
}
threads.join_all ();
}
}
/// Common preparation for IBA functions: Given an ROI (which may or may not
/// be the default ROI::All()), destination image (which may or may not yet
/// be allocated), and optional input images, adjust roi if necessary and
/// allocate pixels for dst if necessary. If dst is already initialized, it
/// will keep its "full" (aka display) window, otherwise its full/display
/// window will be set to the union of A's and B's full/display windows. If
/// dst is uninitialized and force_spec is not NULL, use *force_spec as
/// dst's new spec rather than using A's. Also, if A or B inputs are
/// specified but not initialized or broken, it's an error so return false.
/// If all is ok, return true. Some additional checks and behaviors may be
/// specified by the 'prepflags', which is a bit field defined by
/// IBAprep_flags.
bool OIIO_API IBAprep (ROI &roi, ImageBuf *dst, const ImageBuf *A=NULL,
const ImageBuf *B=NULL, const ImageBuf *C=NULL,
ImageSpec *force_spec=NULL, int prepflags=0);
inline bool IBAprep (ROI &roi, ImageBuf *dst, const ImageBuf *A,
const ImageBuf *B, ImageSpec *force_spec,
int prepflags=0) {
return IBAprep (roi, dst, A, B, NULL, force_spec, prepflags);
}
inline bool IBAprep (ROI &roi, ImageBuf *dst,
const ImageBuf *A, int prepflags) {
return IBAprep (roi, dst, A, NULL, NULL, NULL, prepflags);
}
enum IBAprep_flags {
IBAprep_DEFAULT = 0,
IBAprep_REQUIRE_ALPHA = 1,
IBAprep_REQUIRE_Z = 2,
IBAprep_REQUIRE_SAME_NCHANNELS = 4,
IBAprep_NO_COPY_ROI_FULL = 8, // Don't copy the src's roi_full
IBAprep_NO_SUPPORT_VOLUME = 16, // Don't know how to do volumes
IBAprep_NO_COPY_METADATA = 256, // N.B. default copies all metadata
IBAprep_COPY_ALL_METADATA = 512, // Even unsafe things
IBAprep_CLAMP_MUTUAL_NCHANNELS = 1<<10, // Clamp roi.chend to max of inputs
IBAprep_SUPPORT_DEEP = 1<<11, // Operation allows deep images
IBAprep_DEEP_MIXED = 1<<12, // Allow deep & non-deep combinations
};
/// Given data types a and b, return a type that is a best guess for one
/// that can handle both without any loss of range or precision.
TypeDesc::BASETYPE OIIO_API type_merge (TypeDesc::BASETYPE a, TypeDesc::BASETYPE b);
inline TypeDesc::BASETYPE
type_merge (TypeDesc::BASETYPE a, TypeDesc::BASETYPE b, TypeDesc::BASETYPE c)
{
return type_merge (type_merge(a,b), c);
}
inline TypeDesc type_merge (TypeDesc a, TypeDesc b) {
return type_merge (TypeDesc::BASETYPE(a.basetype), TypeDesc::BASETYPE(b.basetype));
}
inline TypeDesc type_merge (TypeDesc a, TypeDesc b, TypeDesc c)
{
return type_merge (type_merge(a,b), c);
}
// Macro to call a type-specialzed version func<type>(R,...)
#define OIIO_DISPATCH_TYPES(ret,name,func,type,R,...) \
switch (type.basetype) { \
case TypeDesc::FLOAT : \
ret = func<float> (R, __VA_ARGS__); break; \
case TypeDesc::UINT8 : \
ret = func<unsigned char> (R, __VA_ARGS__); break; \
case TypeDesc::HALF : \
ret = func<half> (R, __VA_ARGS__); break; \
case TypeDesc::UINT16: \
ret = func<unsigned short> (R, __VA_ARGS__); break; \
case TypeDesc::INT8 : \
ret = func<char> (R, __VA_ARGS__); break; \
case TypeDesc::INT16 : \
ret = func<short> (R, __VA_ARGS__); break; \
case TypeDesc::UINT : \
ret = func<unsigned int> (R, __VA_ARGS__); break; \
case TypeDesc::INT : \
ret = func<int> (R, __VA_ARGS__); break; \
case TypeDesc::DOUBLE: \
ret = func<double> (R, __VA_ARGS__); break; \
default: \
(R).error ("%s: Unsupported pixel data format '%s'", name, type); \
ret = false; \
}
// Helper, do not call from the outside world.
#define OIIO_DISPATCH_TYPES2_HELP(ret,name,func,Rtype,Atype,R,...) \
switch (Atype.basetype) { \
case TypeDesc::FLOAT : \
ret = func<Rtype,float> (R, __VA_ARGS__); break; \
case TypeDesc::UINT8 : \
ret = func<Rtype,unsigned char> (R, __VA_ARGS__); break; \
case TypeDesc::HALF : \
ret = func<Rtype,half> (R, __VA_ARGS__); break; \
case TypeDesc::UINT16: \
ret = func<Rtype,unsigned short> (R, __VA_ARGS__); break; \
case TypeDesc::INT8 : \
ret = func<Rtype,char> (R, __VA_ARGS__); break; \
case TypeDesc::INT16 : \
ret = func<Rtype,short> (R, __VA_ARGS__); break; \
case TypeDesc::UINT : \
ret = func<Rtype,unsigned int> (R, __VA_ARGS__); break; \
case TypeDesc::INT : \
ret = func<Rtype,int> (R, __VA_ARGS__); break; \
case TypeDesc::DOUBLE : \
ret = func<Rtype,double> (R, __VA_ARGS__); break; \
default: \
(R).error ("%s: Unsupported pixel data format '%s'", name, Atype); \
ret = false; \
}
// Macro to call a type-specialzed version func<Rtype,Atype>(R,...).
#define OIIO_DISPATCH_TYPES2(ret,name,func,Rtype,Atype,R,...) \
switch (Rtype.basetype) { \
case TypeDesc::FLOAT : \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,float,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::UINT8 : \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,unsigned char,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::HALF : \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,half,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::UINT16: \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,unsigned short,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::INT8: \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,char,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::INT16: \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,short,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::UINT: \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,unsigned int,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::INT: \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,int,Atype,R,__VA_ARGS__); \
break; \
case TypeDesc::DOUBLE: \
OIIO_DISPATCH_TYPES2_HELP(ret,name,func,double,Atype,R,__VA_ARGS__);\
break; \
default: \
(R).error ("%s: Unsupported pixel data format '%s'", name, Rtype); \
ret = false; \
}
// Macro to call a type-specialzed version func<type>(R,...) for
// the most common types, will auto-convert the rest to float.
#define OIIO_DISPATCH_COMMON_TYPES(ret,name,func,type,R,...) \
switch (type.basetype) { \
case TypeDesc::FLOAT : \
ret = func<float> (R, __VA_ARGS__); break; \
case TypeDesc::UINT8 : \
ret = func<unsigned char> (R, __VA_ARGS__); break; \
case TypeDesc::HALF : \
ret = func<half> (R, __VA_ARGS__); break; \
case TypeDesc::UINT16: \
ret = func<unsigned short> (R, __VA_ARGS__); break; \
default: { \
/* other types: punt and convert to float, then copy back */ \
ImageBuf Rtmp; \
if ((R).initialized()) \
Rtmp.copy (R, TypeDesc::FLOAT); \
ret = func<float> (Rtmp, __VA_ARGS__); \
if (ret) \
(R).copy (Rtmp); \
else \
(R).error ("%s", Rtmp.geterror()); \
} \
}
// Helper, do not call from the outside world.
#define OIIO_DISPATCH_COMMON_TYPES2_HELP(ret,name,func,Rtype,Atype,R,A,...) \
switch (Atype.basetype) { \
case TypeDesc::FLOAT : \
ret = func<Rtype,float> (R, A, __VA_ARGS__); break; \
case TypeDesc::UINT8 : \
ret = func<Rtype,unsigned char> (R, A, __VA_ARGS__); break; \
case TypeDesc::HALF : \
ret = func<Rtype,half> (R, A, __VA_ARGS__); break; \
case TypeDesc::UINT16: \
ret = func<Rtype,unsigned short> (R, A, __VA_ARGS__); break; \
default: { \
/* other types: punt and convert to float, then copy back */ \
ImageBuf Atmp; \
Atmp.copy (A, TypeDesc::FLOAT); \
ret = func<Rtype,float> (R, Atmp, __VA_ARGS__); \
} \
}
// Macro to call a type-specialzed version func<Rtype,Atype>(R,A,...) for
// the most common types, will auto-convert the rest to float.
#define OIIO_DISPATCH_COMMON_TYPES2(ret,name,func,Rtype,Atype,R,A,...) \
switch (Rtype.basetype) { \
case TypeDesc::FLOAT : \
OIIO_DISPATCH_COMMON_TYPES2_HELP(ret,name,func,float,Atype,R,A,__VA_ARGS__); \
break; \
case TypeDesc::UINT8 : \
OIIO_DISPATCH_COMMON_TYPES2_HELP(ret,name,func,unsigned char,Atype,R,A,__VA_ARGS__); \
break; \
case TypeDesc::HALF : \
OIIO_DISPATCH_COMMON_TYPES2_HELP(ret,name,func,half,Atype,R,A,__VA_ARGS__); \
break; \
case TypeDesc::UINT16: \
OIIO_DISPATCH_COMMON_TYPES2_HELP(ret,name,func,unsigned short,Atype,R,A,__VA_ARGS__); \
break; \
default: { \
/* other types: punt and convert to float, then copy back */ \
ImageBuf Rtmp; \
if ((R).initialized()) \
Rtmp.copy (R, TypeDesc::FLOAT); \
OIIO_DISPATCH_COMMON_TYPES2_HELP(ret,name,func,float,Atype,Rtmp,A,__VA_ARGS__); \
if (ret) \
(R).copy (Rtmp); \
else \
(R).error ("%s", Rtmp.geterror()); \
} \
}
// Helper, do not call from the outside world.
#define OIIO_DISPATCH_COMMON_TYPES3_HELP2(ret,name,func,Rtype,Atype,Btype,R,A,B,...) \
switch (Rtype.basetype) { \
case TypeDesc::FLOAT : \
ret = func<float,Atype,Btype> (R,A,B,__VA_ARGS__); break; \
case TypeDesc::UINT8 : \
ret = func<unsigned char,Atype,Btype> (R,A,B,__VA_ARGS__); break; \
case TypeDesc::HALF : \
ret = func<half,Atype,Btype> (R,A,B,__VA_ARGS__); break; \
case TypeDesc::UINT16: \
ret = func<unsigned short,Atype,Btype> (R,A,B,__VA_ARGS__); break; \
default: { \
/* other types: punt and convert to float, then copy back */ \
ImageBuf Rtmp; \
if ((R).initialized()) \
Rtmp.copy (R, TypeDesc::FLOAT); \
ret = func<float,Atype,Btype> (R,A,B,__VA_ARGS__); \
if (ret) \
(R).copy (Rtmp); \
else \
(R).error ("%s", Rtmp.geterror()); \
} \
}
// Helper, do not call from the outside world.
#define OIIO_DISPATCH_COMMON_TYPES3_HELP(ret,name,func,Rtype,Atype,Btype,R,A,B,...) \
switch (Btype.basetype) { \
case TypeDesc::FLOAT : \
OIIO_DISPATCH_COMMON_TYPES3_HELP2(ret,name,func,Rtype,Atype,float,R,A,B,__VA_ARGS__); \
break; \
case TypeDesc::UINT8 : \
OIIO_DISPATCH_COMMON_TYPES3_HELP2(ret,name,func,Rtype,Atype,unsigned char,R,A,B,__VA_ARGS__); \
break; \
case TypeDesc::HALF : \
OIIO_DISPATCH_COMMON_TYPES3_HELP2(ret,name,func,Rtype,Atype,half,R,A,B,__VA_ARGS__); \
break; \
case TypeDesc::UINT16 : \
OIIO_DISPATCH_COMMON_TYPES3_HELP2(ret,name,func,Rtype,Atype,unsigned short,R,A,B,__VA_ARGS__); \
break; \
default: { \
/* other types: punt and convert to float */ \
ImageBuf Btmp; \
Btmp.copy (B, TypeDesc::FLOAT); \
OIIO_DISPATCH_COMMON_TYPES3_HELP2(ret,name,func,Rtype,Atype,float,R,A,Btmp,__VA_ARGS__); \
} \
}
// Macro to call a type-specialzed version func<Rtype,Atype,Btype>(R,A,B,...)
// the most common types, will auto-convert the rest to float.
#define OIIO_DISPATCH_COMMON_TYPES3(ret,name,func,Rtype,Atype,Btype,R,A,B,...) \
switch (Atype.basetype) { \
case TypeDesc::FLOAT : \
OIIO_DISPATCH_COMMON_TYPES3_HELP(ret,name,func,Rtype,float,Btype,R,A,B,__VA_ARGS__); \
break; \
case TypeDesc::UINT8 : \
OIIO_DISPATCH_COMMON_TYPES3_HELP(ret,name,func,Rtype,unsigned char,Btype,R,A,B,__VA_ARGS__); \
break; \
case TypeDesc::HALF : \
OIIO_DISPATCH_COMMON_TYPES3_HELP(ret,name,func,Rtype,half,Btype,R,A,B,__VA_ARGS__); \
break; \
case TypeDesc::UINT16: \
OIIO_DISPATCH_COMMON_TYPES3_HELP(ret,name,func,Rtype,unsigned short,Btype,R,A,B,__VA_ARGS__); \
break; \
default: \
/* other types: punt and convert to float */ \
ImageBuf Atmp; \
Atmp.copy (A, TypeDesc::FLOAT); \
OIIO_DISPATCH_COMMON_TYPES3_HELP(ret,name,func,Rtype,float,Btype,R,Atmp,B,__VA_ARGS__); \
}
} // end namespace ImageBufAlgo
OIIO_NAMESPACE_END
#endif // OPENIMAGEIO_IMAGEBUFALGO_UTIL_H
|