| //--------------------------------------------------------------------------------- |
| // |
| // Little Color Management System |
| // Copyright (c) 1998-2017 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; |
| |
| // Safeguard which covers against absurd values |
| if (*n > 1E+20 || *n < -1E+20) return FALSE; |
| |
| #if defined(_MSC_VER) && _MSC_VER < 1800 |
| return TRUE; |
| #elif defined (__BORLANDC__) |
| return TRUE; |
| #else |
| |
| // fpclassify() required by C99 (only provided by MSVC >= 1800, VS2013 onwards) |
| return ((fpclassify(*n) == FP_ZERO) || (fpclassify(*n) == FP_NORMAL)); |
| #endif |
| } |
| |
| return TRUE; |
| } |
| |
| |
| 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((cmsS15Fixed16Number) _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((cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) xyz.X)); |
| XYZ->Y = _cms15Fixed16toDouble((cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) xyz.Y)); |
| XYZ->Z = _cms15Fixed16toDouble((cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) 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((cmsUInt32Number) _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 = (cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) _cmsDoubleTo15Fixed16(XYZ->X)); |
| xyz.Y = (cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) _cmsDoubleTo15Fixed16(XYZ->Y)); |
| xyz.Z = (cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) _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, (cmsUInt32Number) 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; |
| |
| // See the comments regarding locking in lcms2_internal.h |
| // for an explanation of why we need the following code. |
| #ifdef CMS_IS_WINDOWS_ |
| #ifndef CMS_RELY_ON_WINDOWS_STATIC_MUTEX_INIT |
| { |
| static HANDLE _cmsWindowsInitMutex = NULL; |
| static volatile HANDLE* mutex = &_cmsWindowsInitMutex; |
| |
| if (*mutex == NULL) |
| { |
| HANDLE p = CreateMutex(NULL, FALSE, NULL); |
| if (p && InterlockedCompareExchangePointer((void **)mutex, (void*)p, NULL) != NULL) |
| CloseHandle(p); |
| } |
| if (*mutex == NULL || WaitForSingleObject(*mutex, INFINITE) == WAIT_FAILED) |
| return NULL; |
| if (((void **)&_cmsContextPoolHeadMutex)[0] == NULL) |
| InitializeCriticalSection(&_cmsContextPoolHeadMutex); |
| if (*mutex == NULL || !ReleaseMutex(*mutex)) |
| return NULL; |
| } |
| #endif |
| #endif |
| |
| _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 22 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); |
| } |
| |
| |
