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authorTom Sepez <tsepez@chromium.org>2015-06-17 11:05:02 -0700
committerTom Sepez <tsepez@chromium.org>2015-06-17 11:05:02 -0700
commit8be557542973c786d1024a7bfb300df230f00464 (patch)
tree128ced2e83deea3920b043404336bc7ca9b0d1ef /third_party/lcms2-2.6/src/cmserr.c
parentb7d358b498800e4c240d381fa6f098af17a4d95b (diff)
downloadpdfium-8be557542973c786d1024a7bfb300df230f00464.tar.xz
Merge to XFA: Move lcms2 into third_party
Original Review URL: https://codereview.chromium.org/1181943008. TBR=thestig@chromium.org Review URL: https://codereview.chromium.org/1187273006.
Diffstat (limited to 'third_party/lcms2-2.6/src/cmserr.c')
-rw-r--r--third_party/lcms2-2.6/src/cmserr.c707
1 files changed, 707 insertions, 0 deletions
diff --git a/third_party/lcms2-2.6/src/cmserr.c b/third_party/lcms2-2.6/src/cmserr.c
new file mode 100644
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+++ b/third_party/lcms2-2.6/src/cmserr.c
@@ -0,0 +1,707 @@
+//---------------------------------------------------------------------------------
+//
+// Little Color Management System
+// Copyright (c) 1998-2012 Marti Maria Saguer
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the Software
+// is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+//---------------------------------------------------------------------------------
+
+#include "lcms2_internal.h"
+
+// I am so tired about incompatibilities on those functions that here are some replacements
+// that hopefully would be fully portable.
+
+// compare two strings ignoring case
+int CMSEXPORT cmsstrcasecmp(const char* s1, const char* s2)
+{
+ register const unsigned char *us1 = (const unsigned char *)s1,
+ *us2 = (const unsigned char *)s2;
+
+ while (toupper(*us1) == toupper(*us2++))
+ if (*us1++ == '\0')
+ return 0;
+
+ return (toupper(*us1) - toupper(*--us2));
+}
+
+// long int because C99 specifies ftell in such way (7.19.9.2)
+long int CMSEXPORT cmsfilelength(FILE* f)
+{
+ long int p , n;
+
+ p = ftell(f); // register current file position
+
+ if (fseek(f, 0, SEEK_END) != 0) {
+ return -1;
+ }
+
+ n = ftell(f);
+ fseek(f, p, SEEK_SET); // file position restored
+
+ return n;
+}
+
+#if 0
+// Memory handling ------------------------------------------------------------------
+//
+// This is the interface to low-level memory management routines. By default a simple
+// wrapping to malloc/free/realloc is provided, although there is a limit on the max
+// amount of memoy that can be reclaimed. This is mostly as a safety feature to prevent
+// bogus or evil code to allocate huge blocks that otherwise lcms would never need.
+
+#define MAX_MEMORY_FOR_ALLOC ((cmsUInt32Number)(1024U*1024U*512U))
+
+// User may override this behaviour by using a memory plug-in, which basically replaces
+// the default memory management functions. In this case, no check is performed and it
+// is up to the plug-in writter to keep in the safe side. There are only three functions
+// required to be implemented: malloc, realloc and free, although the user may want to
+// replace the optional mallocZero, calloc and dup as well.
+
+cmsBool _cmsRegisterMemHandlerPlugin(cmsContext ContextID, cmsPluginBase* Plugin);
+
+// *********************************************************************************
+
+// This is the default memory allocation function. It does a very coarse
+// check of amout of memory, just to prevent exploits
+static
+void* _cmsMallocDefaultFn(cmsContext ContextID, cmsUInt32Number size)
+{
+ if (size > MAX_MEMORY_FOR_ALLOC) return NULL; // Never allow over maximum
+
+ return (void*) malloc(size);
+
+ cmsUNUSED_PARAMETER(ContextID);
+}
+
+// Generic allocate & zero
+static
+void* _cmsMallocZeroDefaultFn(cmsContext ContextID, cmsUInt32Number size)
+{
+ void *pt = _cmsMalloc(ContextID, size);
+ if (pt == NULL) return NULL;
+
+ memset(pt, 0, size);
+ return pt;
+}
+
+
+// The default free function. The only check proformed is against NULL pointers
+static
+void _cmsFreeDefaultFn(cmsContext ContextID, void *Ptr)
+{
+ // free(NULL) is defined a no-op by C99, therefore it is safe to
+ // avoid the check, but it is here just in case...
+
+ if (Ptr) free(Ptr);
+
+ cmsUNUSED_PARAMETER(ContextID);
+}
+
+// The default realloc function. Again it checks for exploits. If Ptr is NULL,
+// realloc behaves the same way as malloc and allocates a new block of size bytes.
+static
+void* _cmsReallocDefaultFn(cmsContext ContextID, void* Ptr, cmsUInt32Number size)
+{
+
+ if (size > MAX_MEMORY_FOR_ALLOC) return NULL; // Never realloc over 512Mb
+
+ return realloc(Ptr, size);
+
+ cmsUNUSED_PARAMETER(ContextID);
+}
+
+
+// The default calloc function. Allocates an array of num elements, each one of size bytes
+// all memory is initialized to zero.
+static
+void* _cmsCallocDefaultFn(cmsContext ContextID, cmsUInt32Number num, cmsUInt32Number size)
+{
+ cmsUInt32Number Total = num * size;
+
+ // Preserve calloc behaviour
+ if (Total == 0) return NULL;
+
+ // Safe check for overflow.
+ if (num >= UINT_MAX / size) return NULL;
+
+ // Check for overflow
+ if (Total < num || Total < size) {
+ return NULL;
+ }
+
+ if (Total > MAX_MEMORY_FOR_ALLOC) return NULL; // Never alloc over 512Mb
+
+ return _cmsMallocZero(ContextID, Total);
+}
+
+// Generic block duplication
+static
+void* _cmsDupDefaultFn(cmsContext ContextID, const void* Org, cmsUInt32Number size)
+{
+ void* mem;
+
+ if (size > MAX_MEMORY_FOR_ALLOC) return NULL; // Never dup over 512Mb
+
+ mem = _cmsMalloc(ContextID, size);
+
+ if (mem != NULL && Org != NULL)
+ memmove(mem, Org, size);
+
+ return mem;
+}
+
+
+// Pointers to memory manager functions in Context0
+_cmsMemPluginChunkType _cmsMemPluginChunk = { _cmsMallocDefaultFn, _cmsMallocZeroDefaultFn, _cmsFreeDefaultFn,
+ _cmsReallocDefaultFn, _cmsCallocDefaultFn, _cmsDupDefaultFn
+ };
+
+
+// Reset and duplicate memory manager
+void _cmsAllocMemPluginChunk(struct _cmsContext_struct* ctx, const struct _cmsContext_struct* src)
+{
+ _cmsAssert(ctx != NULL);
+
+ if (src != NULL) {
+
+ // Duplicate
+ ctx ->chunks[MemPlugin] = _cmsSubAllocDup(ctx ->MemPool, src ->chunks[MemPlugin], sizeof(_cmsMemPluginChunkType));
+ }
+ else {
+
+ // To reset it, we use the default allocators, which cannot be overriden
+ ctx ->chunks[MemPlugin] = &ctx ->DefaultMemoryManager;
+ }
+}
+
+// Auxiliar to fill memory management functions from plugin (or context 0 defaults)
+void _cmsInstallAllocFunctions(cmsPluginMemHandler* Plugin, _cmsMemPluginChunkType* ptr)
+{
+ if (Plugin == NULL) {
+
+ memcpy(ptr, &_cmsMemPluginChunk, sizeof(_cmsMemPluginChunk));
+ }
+ else {
+
+ ptr ->MallocPtr = Plugin -> MallocPtr;
+ ptr ->FreePtr = Plugin -> FreePtr;
+ ptr ->ReallocPtr = Plugin -> ReallocPtr;
+
+ // Make sure we revert to defaults
+ ptr ->MallocZeroPtr= _cmsMallocZeroDefaultFn;
+ ptr ->CallocPtr = _cmsCallocDefaultFn;
+ ptr ->DupPtr = _cmsDupDefaultFn;
+
+ if (Plugin ->MallocZeroPtr != NULL) ptr ->MallocZeroPtr = Plugin -> MallocZeroPtr;
+ if (Plugin ->CallocPtr != NULL) ptr ->CallocPtr = Plugin -> CallocPtr;
+ if (Plugin ->DupPtr != NULL) ptr ->DupPtr = Plugin -> DupPtr;
+
+ }
+}
+
+
+// Plug-in replacement entry
+cmsBool _cmsRegisterMemHandlerPlugin(cmsContext ContextID, cmsPluginBase *Data)
+{
+ cmsPluginMemHandler* Plugin = (cmsPluginMemHandler*) Data;
+ _cmsMemPluginChunkType* ptr;
+
+ // NULL forces to reset to defaults. In this special case, the defaults are stored in the context structure.
+ // Remaining plug-ins does NOT have any copy in the context structure, but this is somehow special as the
+ // context internal data should be malloce'd by using those functions.
+ if (Data == NULL) {
+
+ struct _cmsContext_struct* ctx = ( struct _cmsContext_struct*) ContextID;
+
+ // Return to the default allocators
+ if (ContextID != NULL) {
+ ctx->chunks[MemPlugin] = (void*) &ctx->DefaultMemoryManager;
+ }
+ return TRUE;
+ }
+
+ // Check for required callbacks
+ if (Plugin -> MallocPtr == NULL ||
+ Plugin -> FreePtr == NULL ||
+ Plugin -> ReallocPtr == NULL) return FALSE;
+
+ // Set replacement functions
+ ptr = (_cmsMemPluginChunkType*) _cmsContextGetClientChunk(ContextID, MemPlugin);
+ if (ptr == NULL)
+ return FALSE;
+
+ _cmsInstallAllocFunctions(Plugin, ptr);
+ return TRUE;
+}
+#else
+#include "../../../core/include/fxcrt/fx_memory.h"
+#include "../../../core/include/fxcrt/fx_system.h"
+
+cmsBool _cmsRegisterMemHandlerPlugin(cmsContext ContextID, cmsPluginBase* Plugin)
+{
+ return TRUE;
+}
+
+// Generic allocate
+void* CMSEXPORT _cmsMalloc(cmsContext ContextID, cmsUInt32Number size)
+{
+ return FXMEM_DefaultAlloc(size, 1);
+}
+
+// Generic allocate & zero
+void* CMSEXPORT _cmsMallocZero(cmsContext ContextID, cmsUInt32Number size)
+{
+ void* p = FXMEM_DefaultAlloc(size, 1);
+ if (p) FXSYS_memset(p, 0, size);
+ return p;
+}
+
+// Generic calloc
+void* CMSEXPORT _cmsCalloc(cmsContext ContextID, cmsUInt32Number num, cmsUInt32Number size)
+{
+ cmsUInt32Number total = num * size;
+ if (total == 0 || total / size != num || total >= 512 * 1024 * 1024)
+ return NULL;
+
+ return _cmsMallocZero(ContextID, num * size);
+}
+
+// Generic reallocate
+void* CMSEXPORT _cmsRealloc(cmsContext ContextID, void* Ptr, cmsUInt32Number size)
+{
+ return FXMEM_DefaultRealloc(Ptr, size, 1);
+}
+
+// Generic free memory
+void CMSEXPORT _cmsFree(cmsContext ContextID, void* Ptr)
+{
+ if (Ptr != NULL) FXMEM_DefaultFree(Ptr, 0);
+}
+
+// Generic block duplication
+void* CMSEXPORT _cmsDupMem(cmsContext ContextID, const void* Org, cmsUInt32Number size)
+{
+ void* p = FXMEM_DefaultAlloc(size, 1);
+ FXSYS_memmove(p, Org, size);
+ return p;
+}
+
+_cmsMemPluginChunkType _cmsMemPluginChunk = {_cmsMalloc, _cmsMallocZero, _cmsFree,
+ _cmsRealloc, _cmsCalloc, _cmsDupMem
+ };
+
+void _cmsAllocMemPluginChunk(struct _cmsContext_struct* ctx, const struct _cmsContext_struct* src)
+{
+ _cmsAssert(ctx != NULL);
+
+ if (src != NULL) {
+
+ // Duplicate
+ ctx ->chunks[MemPlugin] = _cmsSubAllocDup(ctx ->MemPool, src ->chunks[MemPlugin], sizeof(_cmsMemPluginChunkType));
+ }
+ else {
+
+ // To reset it, we use the default allocators, which cannot be overriden
+ ctx ->chunks[MemPlugin] = &ctx ->DefaultMemoryManager;
+ }
+}
+
+void _cmsInstallAllocFunctions(cmsPluginMemHandler* Plugin, _cmsMemPluginChunkType* ptr)
+{
+ if (Plugin == NULL) {
+
+ memcpy(ptr, &_cmsMemPluginChunk, sizeof(_cmsMemPluginChunk));
+ }
+ else {
+
+ ptr ->MallocPtr = Plugin -> MallocPtr;
+ ptr ->FreePtr = Plugin -> FreePtr;
+ ptr ->ReallocPtr = Plugin -> ReallocPtr;
+
+ // Make sure we revert to defaults
+ ptr ->MallocZeroPtr= _cmsMallocZero;
+ ptr ->CallocPtr = _cmsCalloc;
+ ptr ->DupPtr = _cmsDupMem;
+
+ if (Plugin ->MallocZeroPtr != NULL) ptr ->MallocZeroPtr = Plugin -> MallocZeroPtr;
+ if (Plugin ->CallocPtr != NULL) ptr ->CallocPtr = Plugin -> CallocPtr;
+ if (Plugin ->DupPtr != NULL) ptr ->DupPtr = Plugin -> DupPtr;
+
+ }
+}
+#endif
+
+// ********************************************************************************************
+
+// Sub allocation takes care of many pointers of small size. The memory allocated in
+// this way have be freed at once. Next function allocates a single chunk for linked list
+// I prefer this method over realloc due to the big inpact on xput realloc may have if
+// memory is being swapped to disk. This approach is safer (although that may not be true on all platforms)
+static
+_cmsSubAllocator_chunk* _cmsCreateSubAllocChunk(cmsContext ContextID, cmsUInt32Number Initial)
+{
+ _cmsSubAllocator_chunk* chunk;
+
+ // 20K by default
+ if (Initial == 0)
+ Initial = 20*1024;
+
+ // Create the container
+ chunk = (_cmsSubAllocator_chunk*) _cmsMallocZero(ContextID, sizeof(_cmsSubAllocator_chunk));
+ if (chunk == NULL) return NULL;
+
+ // Initialize values
+ chunk ->Block = (cmsUInt8Number*) _cmsMalloc(ContextID, Initial);
+ if (chunk ->Block == NULL) {
+
+ // Something went wrong
+ _cmsFree(ContextID, chunk);
+ return NULL;
+ }
+
+ chunk ->BlockSize = Initial;
+ chunk ->Used = 0;
+ chunk ->next = NULL;
+
+ return chunk;
+}
+
+// The suballocated is nothing but a pointer to the first element in the list. We also keep
+// the thread ID in this structure.
+_cmsSubAllocator* _cmsCreateSubAlloc(cmsContext ContextID, cmsUInt32Number Initial)
+{
+ _cmsSubAllocator* sub;
+
+ // Create the container
+ sub = (_cmsSubAllocator*) _cmsMallocZero(ContextID, sizeof(_cmsSubAllocator));
+ if (sub == NULL) return NULL;
+
+ sub ->ContextID = ContextID;
+
+ sub ->h = _cmsCreateSubAllocChunk(ContextID, Initial);
+ if (sub ->h == NULL) {
+ _cmsFree(ContextID, sub);
+ return NULL;
+ }
+
+ return sub;
+}
+
+
+// Get rid of whole linked list
+void _cmsSubAllocDestroy(_cmsSubAllocator* sub)
+{
+ _cmsSubAllocator_chunk *chunk, *n;
+
+ for (chunk = sub ->h; chunk != NULL; chunk = n) {
+
+ n = chunk->next;
+ if (chunk->Block != NULL) _cmsFree(sub ->ContextID, chunk->Block);
+ _cmsFree(sub ->ContextID, chunk);
+ }
+
+ // Free the header
+ _cmsFree(sub ->ContextID, sub);
+}
+
+
+// Get a pointer to small memory block.
+void* _cmsSubAlloc(_cmsSubAllocator* sub, cmsUInt32Number size)
+{
+ cmsUInt32Number Free = sub -> h ->BlockSize - sub -> h -> Used;
+ cmsUInt8Number* ptr;
+
+ size = _cmsALIGNMEM(size);
+
+ // Check for memory. If there is no room, allocate a new chunk of double memory size.
+ if (size > Free) {
+
+ _cmsSubAllocator_chunk* chunk;
+ cmsUInt32Number newSize;
+
+ newSize = sub -> h ->BlockSize * 2;
+ if (newSize < size) newSize = size;
+
+ chunk = _cmsCreateSubAllocChunk(sub -> ContextID, newSize);
+ if (chunk == NULL) return NULL;
+
+ // Link list
+ chunk ->next = sub ->h;
+ sub ->h = chunk;
+
+ }
+
+ ptr = sub -> h ->Block + sub -> h ->Used;
+ sub -> h -> Used += size;
+
+ return (void*) ptr;
+}
+
+// Duplicate in pool
+void* _cmsSubAllocDup(_cmsSubAllocator* s, const void *ptr, cmsUInt32Number size)
+{
+ void *NewPtr;
+
+ // Dup of null pointer is also NULL
+ if (ptr == NULL)
+ return NULL;
+
+ NewPtr = _cmsSubAlloc(s, size);
+
+ if (ptr != NULL && NewPtr != NULL) {
+ memcpy(NewPtr, ptr, size);
+ }
+
+ return NewPtr;
+}
+
+
+
+// Error logging ******************************************************************
+
+// There is no error handling at all. When a funtion fails, it returns proper value.
+// For example, all create functions does return NULL on failure. Other return FALSE
+// It may be interesting, for the developer, to know why the function is failing.
+// for that reason, lcms2 does offer a logging function. This function does recive
+// a ENGLISH string with some clues on what is going wrong. You can show this
+// info to the end user, or just create some sort of log.
+// The logging function should NOT terminate the program, as this obviously can leave
+// resources. It is the programmer's responsability to check each function return code
+// to make sure it didn't fail.
+
+// Error messages are limited to MAX_ERROR_MESSAGE_LEN
+
+#define MAX_ERROR_MESSAGE_LEN 1024
+
+// ---------------------------------------------------------------------------------------------------------
+
+// This is our default log error
+static void DefaultLogErrorHandlerFunction(cmsContext ContextID, cmsUInt32Number ErrorCode, const char *Text);
+
+// Context0 storage, which is global
+_cmsLogErrorChunkType _cmsLogErrorChunk = { DefaultLogErrorHandlerFunction };
+
+// Allocates and inits error logger container for a given context. If src is NULL, only initializes the value
+// to the default. Otherwise, it duplicates the value. The interface is standard across all context clients
+void _cmsAllocLogErrorChunk(struct _cmsContext_struct* ctx,
+ const struct _cmsContext_struct* src)
+{
+ static _cmsLogErrorChunkType LogErrorChunk = { DefaultLogErrorHandlerFunction };
+ void* from;
+
+ if (src != NULL) {
+ from = src ->chunks[Logger];
+ }
+ else {
+ from = &LogErrorChunk;
+ }
+
+ ctx ->chunks[Logger] = _cmsSubAllocDup(ctx ->MemPool, from, sizeof(_cmsLogErrorChunkType));
+}
+
+// The default error logger does nothing.
+static
+void DefaultLogErrorHandlerFunction(cmsContext ContextID, cmsUInt32Number ErrorCode, const char *Text)
+{
+ // fprintf(stderr, "[lcms]: %s\n", Text);
+ // fflush(stderr);
+
+ cmsUNUSED_PARAMETER(ContextID);
+ cmsUNUSED_PARAMETER(ErrorCode);
+ cmsUNUSED_PARAMETER(Text);
+}
+
+// Change log error, context based
+void CMSEXPORT cmsSetLogErrorHandlerTHR(cmsContext ContextID, cmsLogErrorHandlerFunction Fn)
+{
+ _cmsLogErrorChunkType* lhg = (_cmsLogErrorChunkType*) _cmsContextGetClientChunk(ContextID, Logger);
+
+ if (lhg != NULL) {
+
+ if (Fn == NULL)
+ lhg -> LogErrorHandler = DefaultLogErrorHandlerFunction;
+ else
+ lhg -> LogErrorHandler = Fn;
+ }
+}
+
+// Change log error, legacy
+void CMSEXPORT cmsSetLogErrorHandler(cmsLogErrorHandlerFunction Fn)
+{
+ cmsSetLogErrorHandlerTHR(NULL, Fn);
+}
+
+// Log an error
+// ErrorText is a text holding an english description of error.
+void CMSEXPORT cmsSignalError(cmsContext ContextID, cmsUInt32Number ErrorCode, const char *ErrorText, ...)
+{
+ va_list args;
+ char Buffer[MAX_ERROR_MESSAGE_LEN];
+ _cmsLogErrorChunkType* lhg;
+
+
+ va_start(args, ErrorText);
+ vsnprintf(Buffer, MAX_ERROR_MESSAGE_LEN-1, ErrorText, args);
+ va_end(args);
+
+ // Check for the context, if specified go there. If not, go for the global
+ lhg = (_cmsLogErrorChunkType*) _cmsContextGetClientChunk(ContextID, Logger);
+ if (lhg ->LogErrorHandler) {
+ lhg ->LogErrorHandler(ContextID, ErrorCode, Buffer);
+ }
+}
+
+// Utility function to print signatures
+void _cmsTagSignature2String(char String[5], cmsTagSignature sig)
+{
+ cmsUInt32Number be;
+
+ // Convert to big endian
+ be = _cmsAdjustEndianess32((cmsUInt32Number) sig);
+
+ // Move chars
+ memmove(String, &be, 4);
+
+ // Make sure of terminator
+ String[4] = 0;
+}
+
+//--------------------------------------------------------------------------------------------------
+
+
+static
+void* defMtxCreate(cmsContext id)
+{
+ _cmsMutex* ptr_mutex = (_cmsMutex*) _cmsMalloc(id, sizeof(_cmsMutex));
+ _cmsInitMutexPrimitive(ptr_mutex);
+ return (void*) ptr_mutex;
+}
+
+static
+void defMtxDestroy(cmsContext id, void* mtx)
+{
+ _cmsDestroyMutexPrimitive((_cmsMutex *) mtx);
+ _cmsFree(id, mtx);
+}
+
+static
+cmsBool defMtxLock(cmsContext id, void* mtx)
+{
+ cmsUNUSED_PARAMETER(id);
+ return _cmsLockPrimitive((_cmsMutex *) mtx) == 0;
+}
+
+static
+void defMtxUnlock(cmsContext id, void* mtx)
+{
+ cmsUNUSED_PARAMETER(id);
+ _cmsUnlockPrimitive((_cmsMutex *) mtx);
+}
+
+
+
+// Pointers to memory manager functions in Context0
+_cmsMutexPluginChunkType _cmsMutexPluginChunk = { defMtxCreate, defMtxDestroy, defMtxLock, defMtxUnlock };
+
+// Allocate and init mutex container.
+void _cmsAllocMutexPluginChunk(struct _cmsContext_struct* ctx,
+ const struct _cmsContext_struct* src)
+{
+ static _cmsMutexPluginChunkType MutexChunk = {defMtxCreate, defMtxDestroy, defMtxLock, defMtxUnlock };
+ void* from;
+
+ if (src != NULL) {
+ from = src ->chunks[MutexPlugin];
+ }
+ else {
+ from = &MutexChunk;
+ }
+
+ ctx ->chunks[MutexPlugin] = _cmsSubAllocDup(ctx ->MemPool, from, sizeof(_cmsMutexPluginChunkType));
+}
+
+// Register new ways to transform
+cmsBool _cmsRegisterMutexPlugin(cmsContext ContextID, cmsPluginBase* Data)
+{
+ cmsPluginMutex* Plugin = (cmsPluginMutex*) Data;
+ _cmsMutexPluginChunkType* ctx = ( _cmsMutexPluginChunkType*) _cmsContextGetClientChunk(ContextID, MutexPlugin);
+
+ if (Data == NULL) {
+
+ // No lock routines
+ ctx->CreateMutexPtr = NULL;
+ ctx->DestroyMutexPtr = NULL;
+ ctx->LockMutexPtr = NULL;
+ ctx ->UnlockMutexPtr = NULL;
+ return TRUE;
+ }
+
+ // Factory callback is required
+ if (Plugin ->CreateMutexPtr == NULL || Plugin ->DestroyMutexPtr == NULL ||
+ Plugin ->LockMutexPtr == NULL || Plugin ->UnlockMutexPtr == NULL) return FALSE;
+
+
+ ctx->CreateMutexPtr = Plugin->CreateMutexPtr;
+ ctx->DestroyMutexPtr = Plugin ->DestroyMutexPtr;
+ ctx ->LockMutexPtr = Plugin ->LockMutexPtr;
+ ctx ->UnlockMutexPtr = Plugin ->UnlockMutexPtr;
+
+ // All is ok
+ return TRUE;
+}
+
+// Generic Mutex fns
+void* CMSEXPORT _cmsCreateMutex(cmsContext ContextID)
+{
+ _cmsMutexPluginChunkType* ptr = (_cmsMutexPluginChunkType*) _cmsContextGetClientChunk(ContextID, MutexPlugin);
+
+ if (ptr ->CreateMutexPtr == NULL) return NULL;
+
+ return ptr ->CreateMutexPtr(ContextID);
+}
+
+void CMSEXPORT _cmsDestroyMutex(cmsContext ContextID, void* mtx)
+{
+ _cmsMutexPluginChunkType* ptr = (_cmsMutexPluginChunkType*) _cmsContextGetClientChunk(ContextID, MutexPlugin);
+
+ if (ptr ->DestroyMutexPtr != NULL) {
+
+ ptr ->DestroyMutexPtr(ContextID, mtx);
+ }
+}
+
+cmsBool CMSEXPORT _cmsLockMutex(cmsContext ContextID, void* mtx)
+{
+ _cmsMutexPluginChunkType* ptr = (_cmsMutexPluginChunkType*) _cmsContextGetClientChunk(ContextID, MutexPlugin);
+
+ if (ptr ->LockMutexPtr == NULL) return TRUE;
+
+ return ptr ->LockMutexPtr(ContextID, mtx);
+}
+
+void CMSEXPORT _cmsUnlockMutex(cmsContext ContextID, void* mtx)
+{
+ _cmsMutexPluginChunkType* ptr = (_cmsMutexPluginChunkType*) _cmsContextGetClientChunk(ContextID, MutexPlugin);
+
+ if (ptr ->UnlockMutexPtr != NULL) {
+
+ ptr ->UnlockMutexPtr(ContextID, mtx);
+ }
+}