diff options
Diffstat (limited to 'chromium/third_party/pdfium/third_party/lcms/src/cmsplugin.c')
| -rw-r--r-- | chromium/third_party/pdfium/third_party/lcms/src/cmsplugin.c | 954 |
1 files changed, 954 insertions, 0 deletions
diff --git a/chromium/third_party/pdfium/third_party/lcms/src/cmsplugin.c b/chromium/third_party/pdfium/third_party/lcms/src/cmsplugin.c new file mode 100644 index 00000000000..80dd8d48c1f --- /dev/null +++ b/chromium/third_party/pdfium/third_party/lcms/src/cmsplugin.c @@ -0,0 +1,954 @@ +//--------------------------------------------------------------------------------- +// +// Little Color Management System +// Copyright (c) 1998-2016 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" + + +// ---------------------------------------------------------------------------------- +// Encoding & Decoding support functions +// ---------------------------------------------------------------------------------- + +// Little-Endian to Big-Endian + +// Adjust a word value after being readed/ before being written from/to an ICC profile +cmsUInt16Number CMSEXPORT _cmsAdjustEndianess16(cmsUInt16Number Word) +{ +#ifndef CMS_USE_BIG_ENDIAN + + cmsUInt8Number* pByte = (cmsUInt8Number*) &Word; + cmsUInt8Number tmp; + + tmp = pByte[0]; + pByte[0] = pByte[1]; + pByte[1] = tmp; +#endif + + return Word; +} + + +// Transports to properly encoded values - note that icc profiles does use big endian notation. + +// 1 2 3 4 +// 4 3 2 1 + +cmsUInt32Number CMSEXPORT _cmsAdjustEndianess32(cmsUInt32Number DWord) +{ +#ifndef CMS_USE_BIG_ENDIAN + + cmsUInt8Number* pByte = (cmsUInt8Number*) &DWord; + cmsUInt8Number temp1; + cmsUInt8Number temp2; + + temp1 = *pByte++; + temp2 = *pByte++; + *(pByte-1) = *pByte; + *pByte++ = temp2; + *(pByte-3) = *pByte; + *pByte = temp1; +#endif + return DWord; +} + +// 1 2 3 4 5 6 7 8 +// 8 7 6 5 4 3 2 1 + +void CMSEXPORT _cmsAdjustEndianess64(cmsUInt64Number* Result, cmsUInt64Number* QWord) +{ + +#ifndef CMS_USE_BIG_ENDIAN + + cmsUInt8Number* pIn = (cmsUInt8Number*) QWord; + cmsUInt8Number* pOut = (cmsUInt8Number*) Result; + + _cmsAssert(Result != NULL); + + pOut[7] = pIn[0]; + pOut[6] = pIn[1]; + pOut[5] = pIn[2]; + pOut[4] = pIn[3]; + pOut[3] = pIn[4]; + pOut[2] = pIn[5]; + pOut[1] = pIn[6]; + pOut[0] = pIn[7]; + +#else + _cmsAssert(Result != NULL); + +# ifdef CMS_DONT_USE_INT64 + (*Result)[0] = QWord[0]; + (*Result)[1] = QWord[1]; +# else + *Result = *QWord; +# endif +#endif +} + +// Auxiliary -- read 8, 16 and 32-bit numbers +cmsBool CMSEXPORT _cmsReadUInt8Number(cmsIOHANDLER* io, cmsUInt8Number* n) +{ + cmsUInt8Number tmp; + + _cmsAssert(io != NULL); + + if (io -> Read(io, &tmp, sizeof(cmsUInt8Number), 1) != 1) + return FALSE; + + if (n != NULL) *n = tmp; + return TRUE; +} + +cmsBool CMSEXPORT _cmsReadUInt16Number(cmsIOHANDLER* io, cmsUInt16Number* n) +{ + cmsUInt16Number tmp; + + _cmsAssert(io != NULL); + + if (io -> Read(io, &tmp, sizeof(cmsUInt16Number), 1) != 1) + return FALSE; + + if (n != NULL) *n = _cmsAdjustEndianess16(tmp); + return TRUE; +} + +cmsBool CMSEXPORT _cmsReadUInt16Array(cmsIOHANDLER* io, cmsUInt32Number n, cmsUInt16Number* Array) +{ + cmsUInt32Number i; + + _cmsAssert(io != NULL); + + for (i=0; i < n; i++) { + + if (Array != NULL) { + if (!_cmsReadUInt16Number(io, Array + i)) return FALSE; + } + else { + if (!_cmsReadUInt16Number(io, NULL)) return FALSE; + } + + } + return TRUE; +} + +cmsBool CMSEXPORT _cmsReadUInt32Number(cmsIOHANDLER* io, cmsUInt32Number* n) +{ + cmsUInt32Number tmp; + + _cmsAssert(io != NULL); + + if (io -> Read(io, &tmp, sizeof(cmsUInt32Number), 1) != 1) + return FALSE; + + if (n != NULL) *n = _cmsAdjustEndianess32(tmp); + return TRUE; +} + +cmsBool CMSEXPORT _cmsReadFloat32Number(cmsIOHANDLER* io, cmsFloat32Number* n) +{ + cmsUInt32Number tmp; + + _cmsAssert(io != NULL); + + if (io -> Read(io, &tmp, sizeof(cmsUInt32Number), 1) != 1) + return FALSE; + + if (n != NULL) { + + tmp = _cmsAdjustEndianess32(tmp); + *n = *(cmsFloat32Number*) (void*) &tmp; + if (isnan(*n)) + return FALSE; + } + + // fpclassify() required by C99 + return (fpclassify(*n) == FP_ZERO) || (fpclassify(*n) == FP_NORMAL); +} + + +cmsBool CMSEXPORT _cmsReadUInt64Number(cmsIOHANDLER* io, cmsUInt64Number* n) +{ + cmsUInt64Number tmp; + + _cmsAssert(io != NULL); + + if (io -> Read(io, &tmp, sizeof(cmsUInt64Number), 1) != 1) + return FALSE; + + if (n != NULL) _cmsAdjustEndianess64(n, &tmp); + return TRUE; +} + + +cmsBool CMSEXPORT _cmsRead15Fixed16Number(cmsIOHANDLER* io, cmsFloat64Number* n) +{ + cmsUInt32Number tmp; + + _cmsAssert(io != NULL); + + if (io -> Read(io, &tmp, sizeof(cmsUInt32Number), 1) != 1) + return FALSE; + + if (n != NULL) { + *n = _cms15Fixed16toDouble(_cmsAdjustEndianess32(tmp)); + } + + return TRUE; +} + + +cmsBool CMSEXPORT _cmsReadXYZNumber(cmsIOHANDLER* io, cmsCIEXYZ* XYZ) +{ + cmsEncodedXYZNumber xyz; + + _cmsAssert(io != NULL); + + if (io ->Read(io, &xyz, sizeof(cmsEncodedXYZNumber), 1) != 1) return FALSE; + + if (XYZ != NULL) { + + XYZ->X = _cms15Fixed16toDouble(_cmsAdjustEndianess32(xyz.X)); + XYZ->Y = _cms15Fixed16toDouble(_cmsAdjustEndianess32(xyz.Y)); + XYZ->Z = _cms15Fixed16toDouble(_cmsAdjustEndianess32(xyz.Z)); + } + return TRUE; +} + +cmsBool CMSEXPORT _cmsWriteUInt8Number(cmsIOHANDLER* io, cmsUInt8Number n) +{ + _cmsAssert(io != NULL); + + if (io -> Write(io, sizeof(cmsUInt8Number), &n) != 1) + return FALSE; + + return TRUE; +} + +cmsBool CMSEXPORT _cmsWriteUInt16Number(cmsIOHANDLER* io, cmsUInt16Number n) +{ + cmsUInt16Number tmp; + + _cmsAssert(io != NULL); + + tmp = _cmsAdjustEndianess16(n); + if (io -> Write(io, sizeof(cmsUInt16Number), &tmp) != 1) + return FALSE; + + return TRUE; +} + +cmsBool CMSEXPORT _cmsWriteUInt16Array(cmsIOHANDLER* io, cmsUInt32Number n, const cmsUInt16Number* Array) +{ + cmsUInt32Number i; + + _cmsAssert(io != NULL); + _cmsAssert(Array != NULL); + + for (i=0; i < n; i++) { + if (!_cmsWriteUInt16Number(io, Array[i])) return FALSE; + } + + return TRUE; +} + +cmsBool CMSEXPORT _cmsWriteUInt32Number(cmsIOHANDLER* io, cmsUInt32Number n) +{ + cmsUInt32Number tmp; + + _cmsAssert(io != NULL); + + tmp = _cmsAdjustEndianess32(n); + if (io -> Write(io, sizeof(cmsUInt32Number), &tmp) != 1) + return FALSE; + + return TRUE; +} + + +cmsBool CMSEXPORT _cmsWriteFloat32Number(cmsIOHANDLER* io, cmsFloat32Number n) +{ + cmsUInt32Number tmp; + + _cmsAssert(io != NULL); + + tmp = *(cmsUInt32Number*) (void*) &n; + tmp = _cmsAdjustEndianess32(tmp); + if (io -> Write(io, sizeof(cmsUInt32Number), &tmp) != 1) + return FALSE; + + return TRUE; +} + +cmsBool CMSEXPORT _cmsWriteUInt64Number(cmsIOHANDLER* io, cmsUInt64Number* n) +{ + cmsUInt64Number tmp; + + _cmsAssert(io != NULL); + + _cmsAdjustEndianess64(&tmp, n); + if (io -> Write(io, sizeof(cmsUInt64Number), &tmp) != 1) + return FALSE; + + return TRUE; +} + +cmsBool CMSEXPORT _cmsWrite15Fixed16Number(cmsIOHANDLER* io, cmsFloat64Number n) +{ + cmsUInt32Number tmp; + + _cmsAssert(io != NULL); + + tmp = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(n)); + if (io -> Write(io, sizeof(cmsUInt32Number), &tmp) != 1) + return FALSE; + + return TRUE; +} + +cmsBool CMSEXPORT _cmsWriteXYZNumber(cmsIOHANDLER* io, const cmsCIEXYZ* XYZ) +{ + cmsEncodedXYZNumber xyz; + + _cmsAssert(io != NULL); + _cmsAssert(XYZ != NULL); + + xyz.X = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(XYZ->X)); + xyz.Y = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(XYZ->Y)); + xyz.Z = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(XYZ->Z)); + + return io -> Write(io, sizeof(cmsEncodedXYZNumber), &xyz); +} + +// from Fixed point 8.8 to double +cmsFloat64Number CMSEXPORT _cms8Fixed8toDouble(cmsUInt16Number fixed8) +{ + cmsUInt8Number msb, lsb; + + lsb = (cmsUInt8Number) (fixed8 & 0xff); + msb = (cmsUInt8Number) (((cmsUInt16Number) fixed8 >> 8) & 0xff); + + return (cmsFloat64Number) ((cmsFloat64Number) msb + ((cmsFloat64Number) lsb / 256.0)); +} + +cmsUInt16Number CMSEXPORT _cmsDoubleTo8Fixed8(cmsFloat64Number val) +{ + cmsS15Fixed16Number GammaFixed32 = _cmsDoubleTo15Fixed16(val); + return (cmsUInt16Number) ((GammaFixed32 >> 8) & 0xFFFF); +} + +// from Fixed point 15.16 to double +cmsFloat64Number CMSEXPORT _cms15Fixed16toDouble(cmsS15Fixed16Number fix32) +{ + cmsFloat64Number floater, sign, mid; + int Whole, FracPart; + + sign = (fix32 < 0 ? -1 : 1); + fix32 = abs(fix32); + + Whole = (cmsUInt16Number)(fix32 >> 16) & 0xffff; + FracPart = (cmsUInt16Number)(fix32 & 0xffff); + + mid = (cmsFloat64Number) FracPart / 65536.0; + floater = (cmsFloat64Number) Whole + mid; + + return sign * floater; +} + +// from double to Fixed point 15.16 +cmsS15Fixed16Number CMSEXPORT _cmsDoubleTo15Fixed16(cmsFloat64Number v) +{ + return ((cmsS15Fixed16Number) floor((v)*65536.0 + 0.5)); +} + +// Date/Time functions + +void CMSEXPORT _cmsDecodeDateTimeNumber(const cmsDateTimeNumber *Source, struct tm *Dest) +{ + + _cmsAssert(Dest != NULL); + _cmsAssert(Source != NULL); + + Dest->tm_sec = _cmsAdjustEndianess16(Source->seconds); + Dest->tm_min = _cmsAdjustEndianess16(Source->minutes); + Dest->tm_hour = _cmsAdjustEndianess16(Source->hours); + Dest->tm_mday = _cmsAdjustEndianess16(Source->day); + Dest->tm_mon = _cmsAdjustEndianess16(Source->month) - 1; + Dest->tm_year = _cmsAdjustEndianess16(Source->year) - 1900; + Dest->tm_wday = -1; + Dest->tm_yday = -1; + Dest->tm_isdst = 0; +} + +void CMSEXPORT _cmsEncodeDateTimeNumber(cmsDateTimeNumber *Dest, const struct tm *Source) +{ + _cmsAssert(Dest != NULL); + _cmsAssert(Source != NULL); + + Dest->seconds = _cmsAdjustEndianess16((cmsUInt16Number) Source->tm_sec); + Dest->minutes = _cmsAdjustEndianess16((cmsUInt16Number) Source->tm_min); + Dest->hours = _cmsAdjustEndianess16((cmsUInt16Number) Source->tm_hour); + Dest->day = _cmsAdjustEndianess16((cmsUInt16Number) Source->tm_mday); + Dest->month = _cmsAdjustEndianess16((cmsUInt16Number) (Source->tm_mon + 1)); + Dest->year = _cmsAdjustEndianess16((cmsUInt16Number) (Source->tm_year + 1900)); +} + +// Read base and return type base +cmsTagTypeSignature CMSEXPORT _cmsReadTypeBase(cmsIOHANDLER* io) +{ + _cmsTagBase Base; + + _cmsAssert(io != NULL); + + if (io -> Read(io, &Base, sizeof(_cmsTagBase), 1) != 1) + return (cmsTagTypeSignature) 0; + + return (cmsTagTypeSignature) _cmsAdjustEndianess32(Base.sig); +} + +// Setup base marker +cmsBool CMSEXPORT _cmsWriteTypeBase(cmsIOHANDLER* io, cmsTagTypeSignature sig) +{ + _cmsTagBase Base; + + _cmsAssert(io != NULL); + + Base.sig = (cmsTagTypeSignature) _cmsAdjustEndianess32(sig); + memset(&Base.reserved, 0, sizeof(Base.reserved)); + return io -> Write(io, sizeof(_cmsTagBase), &Base); +} + +cmsBool CMSEXPORT _cmsReadAlignment(cmsIOHANDLER* io) +{ + cmsUInt8Number Buffer[4]; + cmsUInt32Number NextAligned, At; + cmsUInt32Number BytesToNextAlignedPos; + + _cmsAssert(io != NULL); + + At = io -> Tell(io); + NextAligned = _cmsALIGNLONG(At); + BytesToNextAlignedPos = NextAligned - At; + if (BytesToNextAlignedPos == 0) return TRUE; + if (BytesToNextAlignedPos > 4) return FALSE; + + return (io ->Read(io, Buffer, BytesToNextAlignedPos, 1) == 1); +} + +cmsBool CMSEXPORT _cmsWriteAlignment(cmsIOHANDLER* io) +{ + cmsUInt8Number Buffer[4]; + cmsUInt32Number NextAligned, At; + cmsUInt32Number BytesToNextAlignedPos; + + _cmsAssert(io != NULL); + + At = io -> Tell(io); + NextAligned = _cmsALIGNLONG(At); + BytesToNextAlignedPos = NextAligned - At; + if (BytesToNextAlignedPos == 0) return TRUE; + if (BytesToNextAlignedPos > 4) return FALSE; + + memset(Buffer, 0, BytesToNextAlignedPos); + return io -> Write(io, BytesToNextAlignedPos, Buffer); +} + + +// To deal with text streams. 2K at most +cmsBool CMSEXPORT _cmsIOPrintf(cmsIOHANDLER* io, const char* frm, ...) +{ + va_list args; + int len; + cmsUInt8Number Buffer[2048]; + cmsBool rc; + + _cmsAssert(io != NULL); + _cmsAssert(frm != NULL); + + va_start(args, frm); + + len = vsnprintf((char*) Buffer, 2047, frm, args); + if (len < 0) { + va_end(args); + return FALSE; // Truncated, which is a fatal error for us + } + + rc = io ->Write(io, len, Buffer); + + va_end(args); + + return rc; +} + + +// Plugin memory management ------------------------------------------------------------------------------------------------- + +// Specialized malloc for plug-ins, that is freed upon exit. +void* _cmsPluginMalloc(cmsContext ContextID, cmsUInt32Number size) +{ + struct _cmsContext_struct* ctx = _cmsGetContext(ContextID); + + if (ctx ->MemPool == NULL) { + + if (ContextID == NULL) { + + ctx->MemPool = _cmsCreateSubAlloc(0, 2*1024); + if (ctx->MemPool == NULL) return NULL; + } + else { + cmsSignalError(ContextID, cmsERROR_CORRUPTION_DETECTED, "NULL memory pool on context"); + return NULL; + } + } + + return _cmsSubAlloc(ctx->MemPool, size); +} + + +// Main plug-in dispatcher +cmsBool CMSEXPORT cmsPlugin(void* Plug_in) +{ + return cmsPluginTHR(NULL, Plug_in); +} + +cmsBool CMSEXPORT cmsPluginTHR(cmsContext id, void* Plug_in) +{ + cmsPluginBase* Plugin; + + for (Plugin = (cmsPluginBase*) Plug_in; + Plugin != NULL; + Plugin = Plugin -> Next) { + + if (Plugin -> Magic != cmsPluginMagicNumber) { + cmsSignalError(id, cmsERROR_UNKNOWN_EXTENSION, "Unrecognized plugin"); + return FALSE; + } + + if (Plugin ->ExpectedVersion > LCMS_VERSION) { + cmsSignalError(id, cmsERROR_UNKNOWN_EXTENSION, "plugin needs Little CMS %d, current version is %d", + Plugin ->ExpectedVersion, LCMS_VERSION); + return FALSE; + } + + switch (Plugin -> Type) { + + case cmsPluginMemHandlerSig: + if (!_cmsRegisterMemHandlerPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginInterpolationSig: + if (!_cmsRegisterInterpPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginTagTypeSig: + if (!_cmsRegisterTagTypePlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginTagSig: + if (!_cmsRegisterTagPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginFormattersSig: + if (!_cmsRegisterFormattersPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginRenderingIntentSig: + if (!_cmsRegisterRenderingIntentPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginParametricCurveSig: + if (!_cmsRegisterParametricCurvesPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginMultiProcessElementSig: + if (!_cmsRegisterMultiProcessElementPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginOptimizationSig: + if (!_cmsRegisterOptimizationPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginTransformSig: + if (!_cmsRegisterTransformPlugin(id, Plugin)) return FALSE; + break; + + case cmsPluginMutexSig: + if (!_cmsRegisterMutexPlugin(id, Plugin)) return FALSE; + break; + + default: + cmsSignalError(id, cmsERROR_UNKNOWN_EXTENSION, "Unrecognized plugin type '%X'", Plugin -> Type); + return FALSE; + } + } + + // Keep a reference to the plug-in + return TRUE; +} + + +// Revert all plug-ins to default +void CMSEXPORT cmsUnregisterPlugins(void) +{ + cmsUnregisterPluginsTHR(NULL); +} + + +// The Global storage for system context. This is the one and only global variable +// pointers structure. All global vars are referenced here. +static struct _cmsContext_struct globalContext = { + + NULL, // Not in the linked list + NULL, // No suballocator + { + NULL, // UserPtr, + &_cmsLogErrorChunk, // Logger, + &_cmsAlarmCodesChunk, // AlarmCodes, + &_cmsAdaptationStateChunk, // AdaptationState, + &_cmsMemPluginChunk, // MemPlugin, + &_cmsInterpPluginChunk, // InterpPlugin, + &_cmsCurvesPluginChunk, // CurvesPlugin, + &_cmsFormattersPluginChunk, // FormattersPlugin, + &_cmsTagTypePluginChunk, // TagTypePlugin, + &_cmsTagPluginChunk, // TagPlugin, + &_cmsIntentsPluginChunk, // IntentPlugin, + &_cmsMPETypePluginChunk, // MPEPlugin, + &_cmsOptimizationPluginChunk, // OptimizationPlugin, + &_cmsTransformPluginChunk, // TransformPlugin, + &_cmsMutexPluginChunk // MutexPlugin + }, + + { NULL, NULL, NULL, NULL, NULL, NULL } // The default memory allocator is not used for context 0 +}; + + +// The context pool (linked list head) +static _cmsMutex _cmsContextPoolHeadMutex = CMS_MUTEX_INITIALIZER; +static struct _cmsContext_struct* _cmsContextPoolHead = NULL; + +// Internal, get associated pointer, with guessing. Never returns NULL. +struct _cmsContext_struct* _cmsGetContext(cmsContext ContextID) +{ + struct _cmsContext_struct* id = (struct _cmsContext_struct*) ContextID; + struct _cmsContext_struct* ctx; + + + // On 0, use global settings + if (id == NULL) + return &globalContext; + + // Search + for (ctx = _cmsContextPoolHead; + ctx != NULL; + ctx = ctx ->Next) { + + // Found it? + if (id == ctx) + return ctx; // New-style context, + } + + return &globalContext; +} + + +// Internal: get the memory area associanted with each context client +// Returns the block assigned to the specific zone. Never return NULL. +void* _cmsContextGetClientChunk(cmsContext ContextID, _cmsMemoryClient mc) +{ + struct _cmsContext_struct* ctx; + void *ptr; + + if ((int) mc < 0 || mc >= MemoryClientMax) { + + cmsSignalError(ContextID, cmsERROR_INTERNAL, "Bad context client -- possible corruption"); + + // This is catastrophic. Should never reach here + _cmsAssert(0); + + // Reverts to global context + return globalContext.chunks[UserPtr]; + } + + ctx = _cmsGetContext(ContextID); + ptr = ctx ->chunks[mc]; + + if (ptr != NULL) + return ptr; + + // A null ptr means no special settings for that context, and this + // reverts to Context0 globals + return globalContext.chunks[mc]; +} + + +// This function returns the given context its default pristine state, +// as no plug-ins were declared. There is no way to unregister a single +// plug-in, as a single call to cmsPluginTHR() function may register +// many different plug-ins simultaneously, then there is no way to +// identify which plug-in to unregister. +void CMSEXPORT cmsUnregisterPluginsTHR(cmsContext ContextID) +{ + _cmsRegisterMemHandlerPlugin(ContextID, NULL); + _cmsRegisterInterpPlugin(ContextID, NULL); + _cmsRegisterTagTypePlugin(ContextID, NULL); + _cmsRegisterTagPlugin(ContextID, NULL); + _cmsRegisterFormattersPlugin(ContextID, NULL); + _cmsRegisterRenderingIntentPlugin(ContextID, NULL); + _cmsRegisterParametricCurvesPlugin(ContextID, NULL); + _cmsRegisterMultiProcessElementPlugin(ContextID, NULL); + _cmsRegisterOptimizationPlugin(ContextID, NULL); + _cmsRegisterTransformPlugin(ContextID, NULL); + _cmsRegisterMutexPlugin(ContextID, NULL); +} + + +// Returns the memory manager plug-in, if any, from the Plug-in bundle +static +cmsPluginMemHandler* _cmsFindMemoryPlugin(void* PluginBundle) +{ + cmsPluginBase* Plugin; + + for (Plugin = (cmsPluginBase*) PluginBundle; + Plugin != NULL; + Plugin = Plugin -> Next) { + + if (Plugin -> Magic == cmsPluginMagicNumber && + Plugin -> ExpectedVersion <= LCMS_VERSION && + Plugin -> Type == cmsPluginMemHandlerSig) { + + // Found! + return (cmsPluginMemHandler*) Plugin; + } + } + + // Nope, revert to defaults + return NULL; +} + + +// Creates a new context with optional associated plug-ins. Caller may also specify an optional pointer to user-defined +// data that will be forwarded to plug-ins and logger. +cmsContext CMSEXPORT cmsCreateContext(void* Plugin, void* UserData) +{ + struct _cmsContext_struct* ctx; + struct _cmsContext_struct fakeContext; + + _cmsInstallAllocFunctions(_cmsFindMemoryPlugin(Plugin), &fakeContext.DefaultMemoryManager); + + fakeContext.chunks[UserPtr] = UserData; + fakeContext.chunks[MemPlugin] = &fakeContext.DefaultMemoryManager; + + // Create the context structure. + ctx = (struct _cmsContext_struct*) _cmsMalloc(&fakeContext, sizeof(struct _cmsContext_struct)); + if (ctx == NULL) + return NULL; // Something very wrong happened! + + // Init the structure and the memory manager + memset(ctx, 0, sizeof(struct _cmsContext_struct)); + + // Keep memory manager + memcpy(&ctx->DefaultMemoryManager, &fakeContext.DefaultMemoryManager, sizeof(_cmsMemPluginChunk)); + + // Maintain the linked list (with proper locking) + _cmsEnterCriticalSectionPrimitive(&_cmsContextPoolHeadMutex); + ctx ->Next = _cmsContextPoolHead; + _cmsContextPoolHead = ctx; + _cmsLeaveCriticalSectionPrimitive(&_cmsContextPoolHeadMutex); + + ctx ->chunks[UserPtr] = UserData; + ctx ->chunks[MemPlugin] = &ctx->DefaultMemoryManager; + + // Now we can allocate the pool by using default memory manager + ctx ->MemPool = _cmsCreateSubAlloc(ctx, 22 * sizeof(void*)); // default size about 32 pointers + if (ctx ->MemPool == NULL) { + + cmsDeleteContext(ctx); + return NULL; + } + + _cmsAllocLogErrorChunk(ctx, NULL); + _cmsAllocAlarmCodesChunk(ctx, NULL); + _cmsAllocAdaptationStateChunk(ctx, NULL); + _cmsAllocMemPluginChunk(ctx, NULL); + _cmsAllocInterpPluginChunk(ctx, NULL); + _cmsAllocCurvesPluginChunk(ctx, NULL); + _cmsAllocFormattersPluginChunk(ctx, NULL); + _cmsAllocTagTypePluginChunk(ctx, NULL); + _cmsAllocMPETypePluginChunk(ctx, NULL); + _cmsAllocTagPluginChunk(ctx, NULL); + _cmsAllocIntentsPluginChunk(ctx, NULL); + _cmsAllocOptimizationPluginChunk(ctx, NULL); + _cmsAllocTransformPluginChunk(ctx, NULL); + _cmsAllocMutexPluginChunk(ctx, NULL); + + // Setup the plug-ins + if (!cmsPluginTHR(ctx, Plugin)) { + + cmsDeleteContext(ctx); + return NULL; + } + + return (cmsContext) ctx; +} + +// Duplicates a context with all associated plug-ins. +// Caller may specify an optional pointer to user-defined +// data that will be forwarded to plug-ins and logger. +cmsContext CMSEXPORT cmsDupContext(cmsContext ContextID, void* NewUserData) +{ + int i; + struct _cmsContext_struct* ctx; + const struct _cmsContext_struct* src = _cmsGetContext(ContextID); + + void* userData = (NewUserData != NULL) ? NewUserData : src -> chunks[UserPtr]; + + + ctx = (struct _cmsContext_struct*) _cmsMalloc(ContextID, sizeof(struct _cmsContext_struct)); + if (ctx == NULL) + return NULL; // Something very wrong happened + + // Setup default memory allocators + memcpy(&ctx->DefaultMemoryManager, &src->DefaultMemoryManager, sizeof(ctx->DefaultMemoryManager)); + + // Maintain the linked list + _cmsEnterCriticalSectionPrimitive(&_cmsContextPoolHeadMutex); + ctx ->Next = _cmsContextPoolHead; + _cmsContextPoolHead = ctx; + _cmsLeaveCriticalSectionPrimitive(&_cmsContextPoolHeadMutex); + + ctx ->chunks[UserPtr] = userData; + ctx ->chunks[MemPlugin] = &ctx->DefaultMemoryManager; + + ctx ->MemPool = _cmsCreateSubAlloc(ctx, 22 * sizeof(void*)); + if (ctx ->MemPool == NULL) { + + cmsDeleteContext(ctx); + return NULL; + } + + // Allocate all required chunks. + _cmsAllocLogErrorChunk(ctx, src); + _cmsAllocAlarmCodesChunk(ctx, src); + _cmsAllocAdaptationStateChunk(ctx, src); + _cmsAllocMemPluginChunk(ctx, src); + _cmsAllocInterpPluginChunk(ctx, src); + _cmsAllocCurvesPluginChunk(ctx, src); + _cmsAllocFormattersPluginChunk(ctx, src); + _cmsAllocTagTypePluginChunk(ctx, src); + _cmsAllocMPETypePluginChunk(ctx, src); + _cmsAllocTagPluginChunk(ctx, src); + _cmsAllocIntentsPluginChunk(ctx, src); + _cmsAllocOptimizationPluginChunk(ctx, src); + _cmsAllocTransformPluginChunk(ctx, src); + _cmsAllocMutexPluginChunk(ctx, src); + + // Make sure no one failed + for (i=Logger; i < MemoryClientMax; i++) { + + if (src ->chunks[i] == NULL) { + cmsDeleteContext((cmsContext) ctx); + return NULL; + } + } + + return (cmsContext) ctx; +} + + +/* +static +struct _cmsContext_struct* FindPrev(struct _cmsContext_struct* id) +{ + struct _cmsContext_struct* prev; + + // Search for previous + for (prev = _cmsContextPoolHead; + prev != NULL; + prev = prev ->Next) + { + if (prev ->Next == id) + return prev; + } + + return NULL; // List is empty or only one element! +} +*/ + +// Frees any resources associated with the given context, +// and destroys the context placeholder. +// The ContextID can no longer be used in any THR operation. +void CMSEXPORT cmsDeleteContext(cmsContext ContextID) +{ + if (ContextID != NULL) { + + struct _cmsContext_struct* ctx = (struct _cmsContext_struct*) ContextID; + struct _cmsContext_struct fakeContext; + struct _cmsContext_struct* prev; + + memcpy(&fakeContext.DefaultMemoryManager, &ctx->DefaultMemoryManager, sizeof(ctx->DefaultMemoryManager)); + + fakeContext.chunks[UserPtr] = ctx ->chunks[UserPtr]; + fakeContext.chunks[MemPlugin] = &fakeContext.DefaultMemoryManager; + + // Get rid of plugins + cmsUnregisterPluginsTHR(ContextID); + + // Since all memory is allocated in the private pool, all what we need to do is destroy the pool + if (ctx -> MemPool != NULL) + _cmsSubAllocDestroy(ctx ->MemPool); + ctx -> MemPool = NULL; + + // Maintain list + _cmsEnterCriticalSectionPrimitive(&_cmsContextPoolHeadMutex); + if (_cmsContextPoolHead == ctx) { + + _cmsContextPoolHead = ctx->Next; + } + else { + + // Search for previous + for (prev = _cmsContextPoolHead; + prev != NULL; + prev = prev ->Next) + { + if (prev -> Next == ctx) { + prev -> Next = ctx ->Next; + break; + } + } + } + _cmsLeaveCriticalSectionPrimitive(&_cmsContextPoolHeadMutex); + + // free the memory block itself + _cmsFree(&fakeContext, ctx); + } +} + +// Returns the user data associated to the given ContextID, or NULL if no user data was attached on context creation +void* CMSEXPORT cmsGetContextUserData(cmsContext ContextID) +{ + return _cmsContextGetClientChunk(ContextID, UserPtr); +} + + |