Java example source code file (cmsio0.c)
The cmsio0.c Java example source code/*
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// This file is available under and governed by the GNU General Public
// License version 2 only, as published by the Free Software Foundation.
// However, the following notice accompanied the original version of this
// file:
//
//---------------------------------------------------------------------------------
//
// 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"
// Generic I/O, tag dictionary management, profile struct
// IOhandlers are abstractions used by littleCMS to read from whatever file, stream,
// memory block or any storage. Each IOhandler provides implementations for read,
// write, seek and tell functions. LittleCMS code deals with IO across those objects.
// In this way, is easier to add support for new storage media.
// NULL stream, for taking care of used space -------------------------------------
// NULL IOhandler basically does nothing but keep track on how many bytes have been
// written. This is handy when creating profiles, where the file size is needed in the
// header. Then, whole profile is serialized across NULL IOhandler and a second pass
// writes the bytes to the pertinent IOhandler.
typedef struct {
cmsUInt32Number Pointer; // Points to current location
} FILENULL;
static
cmsUInt32Number NULLRead(cmsIOHANDLER* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
{
FILENULL* ResData = (FILENULL*) iohandler ->stream;
cmsUInt32Number len = size * count;
ResData -> Pointer += len;
return count;
cmsUNUSED_PARAMETER(Buffer);
}
static
cmsBool NULLSeek(cmsIOHANDLER* iohandler, cmsUInt32Number offset)
{
FILENULL* ResData = (FILENULL*) iohandler ->stream;
ResData ->Pointer = offset;
return TRUE;
}
static
cmsUInt32Number NULLTell(cmsIOHANDLER* iohandler)
{
FILENULL* ResData = (FILENULL*) iohandler ->stream;
return ResData -> Pointer;
}
static
cmsBool NULLWrite(cmsIOHANDLER* iohandler, cmsUInt32Number size, const void *Ptr)
{
FILENULL* ResData = (FILENULL*) iohandler ->stream;
ResData ->Pointer += size;
if (ResData ->Pointer > iohandler->UsedSpace)
iohandler->UsedSpace = ResData ->Pointer;
return TRUE;
cmsUNUSED_PARAMETER(Ptr);
}
static
cmsBool NULLClose(cmsIOHANDLER* iohandler)
{
FILENULL* ResData = (FILENULL*) iohandler ->stream;
_cmsFree(iohandler ->ContextID, ResData);
_cmsFree(iohandler ->ContextID, iohandler);
return TRUE;
}
// The NULL IOhandler creator
cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromNULL(cmsContext ContextID)
{
struct _cms_io_handler* iohandler = NULL;
FILENULL* fm = NULL;
iohandler = (struct _cms_io_handler*) _cmsMallocZero(ContextID, sizeof(struct _cms_io_handler));
if (iohandler == NULL) return NULL;
fm = (FILENULL*) _cmsMallocZero(ContextID, sizeof(FILENULL));
if (fm == NULL) goto Error;
fm ->Pointer = 0;
iohandler ->ContextID = ContextID;
iohandler ->stream = (void*) fm;
iohandler ->UsedSpace = 0;
iohandler ->ReportedSize = 0;
iohandler ->PhysicalFile[0] = 0;
iohandler ->Read = NULLRead;
iohandler ->Seek = NULLSeek;
iohandler ->Close = NULLClose;
iohandler ->Tell = NULLTell;
iohandler ->Write = NULLWrite;
return iohandler;
Error:
if (fm) _cmsFree(ContextID, fm);
if (iohandler) _cmsFree(ContextID, iohandler);
return NULL;
}
// Memory-based stream --------------------------------------------------------------
// Those functions implements an iohandler which takes a block of memory as storage medium.
typedef struct {
cmsUInt8Number* Block; // Points to allocated memory
cmsUInt32Number Size; // Size of allocated memory
cmsUInt32Number Pointer; // Points to current location
int FreeBlockOnClose; // As title
} FILEMEM;
static
cmsUInt32Number MemoryRead(struct _cms_io_handler* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
{
FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
cmsUInt8Number* Ptr;
cmsUInt32Number len = size * count;
if (ResData -> Pointer + len > ResData -> Size){
len = (ResData -> Size - ResData -> Pointer);
cmsSignalError(iohandler ->ContextID, cmsERROR_READ, "Read from memory error. Got %d bytes, block should be of %d bytes", len, count * size);
return 0;
}
Ptr = ResData -> Block;
Ptr += ResData -> Pointer;
memmove(Buffer, Ptr, len);
ResData -> Pointer += len;
return count;
}
// SEEK_CUR is assumed
static
cmsBool MemorySeek(struct _cms_io_handler* iohandler, cmsUInt32Number offset)
{
FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
if (offset > ResData ->Size) {
cmsSignalError(iohandler ->ContextID, cmsERROR_SEEK, "Too few data; probably corrupted profile");
return FALSE;
}
ResData ->Pointer = offset;
return TRUE;
}
// Tell for memory
static
cmsUInt32Number MemoryTell(struct _cms_io_handler* iohandler)
{
FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
if (ResData == NULL) return 0;
return ResData -> Pointer;
}
// Writes data to memory, also keeps used space for further reference.
static
cmsBool MemoryWrite(struct _cms_io_handler* iohandler, cmsUInt32Number size, const void *Ptr)
{
FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
if (ResData == NULL) return FALSE; // Housekeeping
if (size == 0) return TRUE; // Write zero bytes is ok, but does nothing
memmove(ResData ->Block + ResData ->Pointer, Ptr, size);
ResData ->Pointer += size;
iohandler->UsedSpace += size;
if (ResData ->Pointer > iohandler->UsedSpace)
iohandler->UsedSpace = ResData ->Pointer;
return TRUE;
}
static
cmsBool MemoryClose(struct _cms_io_handler* iohandler)
{
FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
if (ResData ->FreeBlockOnClose) {
if (ResData ->Block) _cmsFree(iohandler ->ContextID, ResData ->Block);
}
_cmsFree(iohandler ->ContextID, ResData);
_cmsFree(iohandler ->ContextID, iohandler);
return TRUE;
}
// Create a iohandler for memory block. AccessMode=='r' assumes the iohandler is going to read, and makes
// a copy of the memory block for letting user to free the memory after invoking open profile. In write
// mode ("w"), Buffere points to the begin of memory block to be written.
cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromMem(cmsContext ContextID, void *Buffer, cmsUInt32Number size, const char* AccessMode)
{
cmsIOHANDLER* iohandler = NULL;
FILEMEM* fm = NULL;
_cmsAssert(AccessMode != NULL);
iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
if (iohandler == NULL) return NULL;
switch (*AccessMode) {
case 'r':
fm = (FILEMEM*) _cmsMallocZero(ContextID, sizeof(FILEMEM));
if (fm == NULL) goto Error;
if (Buffer == NULL) {
cmsSignalError(ContextID, cmsERROR_READ, "Couldn't read profile from NULL pointer");
goto Error;
}
fm ->Block = (cmsUInt8Number*) _cmsMalloc(ContextID, size);
if (fm ->Block == NULL) {
_cmsFree(ContextID, fm);
_cmsFree(ContextID, iohandler);
cmsSignalError(ContextID, cmsERROR_READ, "Couldn't allocate %ld bytes for profile", size);
return NULL;
}
memmove(fm->Block, Buffer, size);
fm ->FreeBlockOnClose = TRUE;
fm ->Size = size;
fm ->Pointer = 0;
iohandler -> ReportedSize = size;
break;
case 'w':
fm = (FILEMEM*) _cmsMallocZero(ContextID, sizeof(FILEMEM));
if (fm == NULL) goto Error;
fm ->Block = (cmsUInt8Number*) Buffer;
fm ->FreeBlockOnClose = FALSE;
fm ->Size = size;
fm ->Pointer = 0;
iohandler -> ReportedSize = 0;
break;
default:
cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unknown access mode '%c'", *AccessMode);
return NULL;
}
iohandler ->ContextID = ContextID;
iohandler ->stream = (void*) fm;
iohandler ->UsedSpace = 0;
iohandler ->PhysicalFile[0] = 0;
iohandler ->Read = MemoryRead;
iohandler ->Seek = MemorySeek;
iohandler ->Close = MemoryClose;
iohandler ->Tell = MemoryTell;
iohandler ->Write = MemoryWrite;
return iohandler;
Error:
if (fm) _cmsFree(ContextID, fm);
if (iohandler) _cmsFree(ContextID, iohandler);
return NULL;
}
// File-based stream -------------------------------------------------------
// Read count elements of size bytes each. Return number of elements read
static
cmsUInt32Number FileRead(cmsIOHANDLER* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
{
cmsUInt32Number nReaded = (cmsUInt32Number) fread(Buffer, size, count, (FILE*) iohandler->stream);
if (nReaded != count) {
cmsSignalError(iohandler ->ContextID, cmsERROR_FILE, "Read error. Got %d bytes, block should be of %d bytes", nReaded * size, count * size);
return 0;
}
return nReaded;
}
// Position file pointer in the file
static
cmsBool FileSeek(cmsIOHANDLER* iohandler, cmsUInt32Number offset)
{
if (fseek((FILE*) iohandler ->stream, (long) offset, SEEK_SET) != 0) {
cmsSignalError(iohandler ->ContextID, cmsERROR_FILE, "Seek error; probably corrupted file");
return FALSE;
}
return TRUE;
}
// Returns file pointer position
static
cmsUInt32Number FileTell(cmsIOHANDLER* iohandler)
{
return ftell((FILE*)iohandler ->stream);
}
// Writes data to stream, also keeps used space for further reference. Returns TRUE on success, FALSE on error
static
cmsBool FileWrite(cmsIOHANDLER* iohandler, cmsUInt32Number size, const void* Buffer)
{
if (size == 0) return TRUE; // We allow to write 0 bytes, but nothing is written
iohandler->UsedSpace += size;
return (fwrite(Buffer, size, 1, (FILE*) iohandler->stream) == 1);
}
// Closes the file
static
cmsBool FileClose(cmsIOHANDLER* iohandler)
{
if (fclose((FILE*) iohandler ->stream) != 0) return FALSE;
_cmsFree(iohandler ->ContextID, iohandler);
return TRUE;
}
// Create a iohandler for disk based files. if FileName is NULL, then 'stream' member is also set
// to NULL and no real writting is performed. This only happens in writting access mode
cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromFile(cmsContext ContextID, const char* FileName, const char* AccessMode)
{
cmsIOHANDLER* iohandler = NULL;
FILE* fm = NULL;
iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
if (iohandler == NULL) return NULL;
switch (*AccessMode) {
case 'r':
fm = fopen(FileName, "rb");
if (fm == NULL) {
_cmsFree(ContextID, iohandler);
cmsSignalError(ContextID, cmsERROR_FILE, "File '%s' not found", FileName);
return NULL;
}
iohandler -> ReportedSize = cmsfilelength(fm);
break;
case 'w':
fm = fopen(FileName, "wb");
if (fm == NULL) {
_cmsFree(ContextID, iohandler);
cmsSignalError(ContextID, cmsERROR_FILE, "Couldn't create '%s'", FileName);
return NULL;
}
iohandler -> ReportedSize = 0;
break;
default:
_cmsFree(ContextID, iohandler);
cmsSignalError(ContextID, cmsERROR_FILE, "Unknown access mode '%c'", *AccessMode);
return NULL;
}
iohandler ->ContextID = ContextID;
iohandler ->stream = (void*) fm;
iohandler ->UsedSpace = 0;
// Keep track of the original file
if (FileName != NULL) {
strncpy(iohandler -> PhysicalFile, FileName, sizeof(iohandler -> PhysicalFile)-1);
iohandler -> PhysicalFile[sizeof(iohandler -> PhysicalFile)-1] = 0;
}
iohandler ->Read = FileRead;
iohandler ->Seek = FileSeek;
iohandler ->Close = FileClose;
iohandler ->Tell = FileTell;
iohandler ->Write = FileWrite;
return iohandler;
}
// Create a iohandler for stream based files
cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromStream(cmsContext ContextID, FILE* Stream)
{
cmsIOHANDLER* iohandler = NULL;
iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
if (iohandler == NULL) return NULL;
iohandler -> ContextID = ContextID;
iohandler -> stream = (void*) Stream;
iohandler -> UsedSpace = 0;
iohandler -> ReportedSize = cmsfilelength(Stream);
iohandler -> PhysicalFile[0] = 0;
iohandler ->Read = FileRead;
iohandler ->Seek = FileSeek;
iohandler ->Close = FileClose;
iohandler ->Tell = FileTell;
iohandler ->Write = FileWrite;
return iohandler;
}
// Close an open IO handler
cmsBool CMSEXPORT cmsCloseIOhandler(cmsIOHANDLER* io)
{
return io -> Close(io);
}
// -------------------------------------------------------------------------------------------------------
// Creates an empty structure holding all required parameters
cmsHPROFILE CMSEXPORT cmsCreateProfilePlaceholder(cmsContext ContextID)
{
time_t now = time(NULL);
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) _cmsMallocZero(ContextID, sizeof(_cmsICCPROFILE));
if (Icc == NULL) return NULL;
Icc ->ContextID = ContextID;
// Set it to empty
Icc -> TagCount = 0;
// Set default version
Icc ->Version = 0x02100000;
// Set creation date/time
memmove(&Icc ->Created, gmtime(&now), sizeof(Icc ->Created));
// Return the handle
return (cmsHPROFILE) Icc;
}
cmsContext CMSEXPORT cmsGetProfileContextID(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
if (Icc == NULL) return NULL;
return Icc -> ContextID;
}
// Return the number of tags
cmsInt32Number CMSEXPORT cmsGetTagCount(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
if (Icc == NULL) return -1;
return Icc->TagCount;
}
// Return the tag signature of a given tag number
cmsTagSignature CMSEXPORT cmsGetTagSignature(cmsHPROFILE hProfile, cmsUInt32Number n)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
if (n > Icc->TagCount) return (cmsTagSignature) 0; // Mark as not available
if (n >= MAX_TABLE_TAG) return (cmsTagSignature) 0; // As double check
return Icc ->TagNames[n];
}
static
int SearchOneTag(_cmsICCPROFILE* Profile, cmsTagSignature sig)
{
cmsUInt32Number i;
for (i=0; i < Profile -> TagCount; i++) {
if (sig == Profile -> TagNames[i])
return i;
}
return -1;
}
// Search for a specific tag in tag dictionary. Returns position or -1 if tag not found.
// If followlinks is turned on, then the position of the linked tag is returned
int _cmsSearchTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, cmsBool lFollowLinks)
{
int n;
cmsTagSignature LinkedSig;
do {
// Search for given tag in ICC profile directory
n = SearchOneTag(Icc, sig);
if (n < 0)
return -1; // Not found
if (!lFollowLinks)
return n; // Found, don't follow links
// Is this a linked tag?
LinkedSig = Icc ->TagLinked[n];
// Yes, follow link
if (LinkedSig != (cmsTagSignature) 0) {
sig = LinkedSig;
}
} while (LinkedSig != (cmsTagSignature) 0);
return n;
}
// Create a new tag entry
static
cmsBool _cmsNewTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, int* NewPos)
{
int i;
// Search for the tag
i = _cmsSearchTag(Icc, sig, FALSE);
// Now let's do it easy. If the tag has been already written, that's an error
if (i >= 0) {
cmsSignalError(Icc ->ContextID, cmsERROR_ALREADY_DEFINED, "Tag '%x' already exists", sig);
return FALSE;
}
else {
// New one
if (Icc -> TagCount >= MAX_TABLE_TAG) {
cmsSignalError(Icc ->ContextID, cmsERROR_RANGE, "Too many tags (%d)", MAX_TABLE_TAG);
return FALSE;
}
*NewPos = Icc ->TagCount;
Icc -> TagCount++;
}
return TRUE;
}
// Check existance
cmsBool CMSEXPORT cmsIsTag(cmsHPROFILE hProfile, cmsTagSignature sig)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) (void*) hProfile;
return _cmsSearchTag(Icc, sig, FALSE) >= 0;
}
// Read profile header and validate it
cmsBool _cmsReadHeader(_cmsICCPROFILE* Icc)
{
cmsTagEntry Tag;
cmsICCHeader Header;
cmsUInt32Number i, j;
cmsUInt32Number HeaderSize;
cmsIOHANDLER* io = Icc ->IOhandler;
cmsUInt32Number TagCount;
// Read the header
if (io -> Read(io, &Header, sizeof(cmsICCHeader), 1) != 1) {
return FALSE;
}
// Validate file as an ICC profile
if (_cmsAdjustEndianess32(Header.magic) != cmsMagicNumber) {
cmsSignalError(Icc ->ContextID, cmsERROR_BAD_SIGNATURE, "not an ICC profile, invalid signature");
return FALSE;
}
// Adjust endianess of the used parameters
Icc -> DeviceClass = (cmsProfileClassSignature) _cmsAdjustEndianess32(Header.deviceClass);
Icc -> ColorSpace = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Header.colorSpace);
Icc -> PCS = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Header.pcs);
Icc -> RenderingIntent = _cmsAdjustEndianess32(Header.renderingIntent);
Icc -> flags = _cmsAdjustEndianess32(Header.flags);
Icc -> manufacturer = _cmsAdjustEndianess32(Header.manufacturer);
Icc -> model = _cmsAdjustEndianess32(Header.model);
_cmsAdjustEndianess64(&Icc -> attributes, &Header.attributes);
Icc -> Version = _cmsAdjustEndianess32(Header.version);
// Get size as reported in header
HeaderSize = _cmsAdjustEndianess32(Header.size);
// Make sure HeaderSize is lower than profile size
if (HeaderSize >= Icc ->IOhandler ->ReportedSize)
HeaderSize = Icc ->IOhandler ->ReportedSize;
// Get creation date/time
_cmsDecodeDateTimeNumber(&Header.date, &Icc ->Created);
// The profile ID are 32 raw bytes
memmove(Icc ->ProfileID.ID32, Header.profileID.ID32, 16);
// Read tag directory
if (!_cmsReadUInt32Number(io, &TagCount)) return FALSE;
if (TagCount > MAX_TABLE_TAG) {
cmsSignalError(Icc ->ContextID, cmsERROR_RANGE, "Too many tags (%d)", TagCount);
return FALSE;
}
// Read tag directory
Icc -> TagCount = 0;
for (i=0; i < TagCount; i++) {
if (!_cmsReadUInt32Number(io, (cmsUInt32Number *) &Tag.sig)) return FALSE;
if (!_cmsReadUInt32Number(io, &Tag.offset)) return FALSE;
if (!_cmsReadUInt32Number(io, &Tag.size)) return FALSE;
// Perform some sanity check. Offset + size should fall inside file.
if (Tag.offset + Tag.size > HeaderSize ||
Tag.offset + Tag.size < Tag.offset)
continue;
Icc -> TagNames[Icc ->TagCount] = Tag.sig;
Icc -> TagOffsets[Icc ->TagCount] = Tag.offset;
Icc -> TagSizes[Icc ->TagCount] = Tag.size;
// Search for links
for (j=0; j < Icc ->TagCount; j++) {
if ((Icc ->TagOffsets[j] == Tag.offset) &&
(Icc ->TagSizes[j] == Tag.size)) {
Icc ->TagLinked[Icc ->TagCount] = Icc ->TagNames[j];
}
}
Icc ->TagCount++;
}
return TRUE;
}
// Saves profile header
cmsBool _cmsWriteHeader(_cmsICCPROFILE* Icc, cmsUInt32Number UsedSpace)
{
cmsICCHeader Header;
cmsUInt32Number i;
cmsTagEntry Tag;
cmsInt32Number Count = 0;
Header.size = _cmsAdjustEndianess32(UsedSpace);
Header.cmmId = _cmsAdjustEndianess32(lcmsSignature);
Header.version = _cmsAdjustEndianess32(Icc ->Version);
Header.deviceClass = (cmsProfileClassSignature) _cmsAdjustEndianess32(Icc -> DeviceClass);
Header.colorSpace = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Icc -> ColorSpace);
Header.pcs = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Icc -> PCS);
// NOTE: in v4 Timestamp must be in UTC rather than in local time
_cmsEncodeDateTimeNumber(&Header.date, &Icc ->Created);
Header.magic = _cmsAdjustEndianess32(cmsMagicNumber);
#ifdef CMS_IS_WINDOWS_
Header.platform = (cmsPlatformSignature) _cmsAdjustEndianess32(cmsSigMicrosoft);
#else
Header.platform = (cmsPlatformSignature) _cmsAdjustEndianess32(cmsSigMacintosh);
#endif
Header.flags = _cmsAdjustEndianess32(Icc -> flags);
Header.manufacturer = _cmsAdjustEndianess32(Icc -> manufacturer);
Header.model = _cmsAdjustEndianess32(Icc -> model);
_cmsAdjustEndianess64(&Header.attributes, &Icc -> attributes);
// Rendering intent in the header (for embedded profiles)
Header.renderingIntent = _cmsAdjustEndianess32(Icc -> RenderingIntent);
// Illuminant is always D50
Header.illuminant.X = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(cmsD50_XYZ()->X));
Header.illuminant.Y = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(cmsD50_XYZ()->Y));
Header.illuminant.Z = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(cmsD50_XYZ()->Z));
// Created by LittleCMS (that's me!)
Header.creator = _cmsAdjustEndianess32(lcmsSignature);
memset(&Header.reserved, 0, sizeof(Header.reserved));
// Set profile ID. Endianess is always big endian
memmove(&Header.profileID, &Icc ->ProfileID, 16);
// Dump the header
if (!Icc -> IOhandler->Write(Icc->IOhandler, sizeof(cmsICCHeader), &Header)) return FALSE;
// Saves Tag directory
// Get true count
for (i=0; i < Icc -> TagCount; i++) {
if (Icc ->TagNames[i] != 0)
Count++;
}
// Store number of tags
if (!_cmsWriteUInt32Number(Icc ->IOhandler, Count)) return FALSE;
for (i=0; i < Icc -> TagCount; i++) {
if (Icc ->TagNames[i] == 0) continue; // It is just a placeholder
Tag.sig = (cmsTagSignature) _cmsAdjustEndianess32((cmsInt32Number) Icc -> TagNames[i]);
Tag.offset = _cmsAdjustEndianess32((cmsInt32Number) Icc -> TagOffsets[i]);
Tag.size = _cmsAdjustEndianess32((cmsInt32Number) Icc -> TagSizes[i]);
if (!Icc ->IOhandler -> Write(Icc-> IOhandler, sizeof(cmsTagEntry), &Tag)) return FALSE;
}
return TRUE;
}
// ----------------------------------------------------------------------- Set/Get several struct members
cmsUInt32Number CMSEXPORT cmsGetHeaderRenderingIntent(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return Icc -> RenderingIntent;
}
void CMSEXPORT cmsSetHeaderRenderingIntent(cmsHPROFILE hProfile, cmsUInt32Number RenderingIntent)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> RenderingIntent = RenderingIntent;
}
cmsUInt32Number CMSEXPORT cmsGetHeaderFlags(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return (cmsUInt32Number) Icc -> flags;
}
void CMSEXPORT cmsSetHeaderFlags(cmsHPROFILE hProfile, cmsUInt32Number Flags)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> flags = (cmsUInt32Number) Flags;
}
cmsUInt32Number CMSEXPORT cmsGetHeaderManufacturer(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return (cmsUInt32Number) Icc ->manufacturer;
}
void CMSEXPORT cmsSetHeaderManufacturer(cmsHPROFILE hProfile, cmsUInt32Number manufacturer)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> manufacturer = (cmsUInt32Number) manufacturer;
}
cmsUInt32Number CMSEXPORT cmsGetHeaderModel(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return (cmsUInt32Number) Icc ->model;
}
void CMSEXPORT cmsSetHeaderModel(cmsHPROFILE hProfile, cmsUInt32Number model)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> model = (cmsUInt32Number) model;
}
void CMSEXPORT cmsGetHeaderAttributes(cmsHPROFILE hProfile, cmsUInt64Number* Flags)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
memmove(Flags, &Icc -> attributes, sizeof(cmsUInt64Number));
}
void CMSEXPORT cmsSetHeaderAttributes(cmsHPROFILE hProfile, cmsUInt64Number Flags)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
memmove(&Icc -> attributes, &Flags, sizeof(cmsUInt64Number));
}
void CMSEXPORT cmsGetHeaderProfileID(cmsHPROFILE hProfile, cmsUInt8Number* ProfileID)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
memmove(ProfileID, Icc ->ProfileID.ID8, 16);
}
void CMSEXPORT cmsSetHeaderProfileID(cmsHPROFILE hProfile, cmsUInt8Number* ProfileID)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
memmove(&Icc -> ProfileID, ProfileID, 16);
}
cmsBool CMSEXPORT cmsGetHeaderCreationDateTime(cmsHPROFILE hProfile, struct tm *Dest)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
memmove(Dest, &Icc ->Created, sizeof(struct tm));
return TRUE;
}
cmsColorSpaceSignature CMSEXPORT cmsGetPCS(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return Icc -> PCS;
}
void CMSEXPORT cmsSetPCS(cmsHPROFILE hProfile, cmsColorSpaceSignature pcs)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> PCS = pcs;
}
cmsColorSpaceSignature CMSEXPORT cmsGetColorSpace(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return Icc -> ColorSpace;
}
void CMSEXPORT cmsSetColorSpace(cmsHPROFILE hProfile, cmsColorSpaceSignature sig)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> ColorSpace = sig;
}
cmsProfileClassSignature CMSEXPORT cmsGetDeviceClass(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return Icc -> DeviceClass;
}
void CMSEXPORT cmsSetDeviceClass(cmsHPROFILE hProfile, cmsProfileClassSignature sig)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> DeviceClass = sig;
}
cmsUInt32Number CMSEXPORT cmsGetEncodedICCversion(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
return Icc -> Version;
}
void CMSEXPORT cmsSetEncodedICCversion(cmsHPROFILE hProfile, cmsUInt32Number Version)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
Icc -> Version = Version;
}
// Get an hexadecimal number with same digits as v
static
cmsUInt32Number BaseToBase(cmsUInt32Number in, int BaseIn, int BaseOut)
{
char Buff[100];
int i, len;
cmsUInt32Number out;
for (len=0; in > 0 && len < 100; len++) {
Buff[len] = (char) (in % BaseIn);
in /= BaseIn;
}
for (i=len-1, out=0; i >= 0; --i) {
out = out * BaseOut + Buff[i];
}
return out;
}
void CMSEXPORT cmsSetProfileVersion(cmsHPROFILE hProfile, cmsFloat64Number Version)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
// 4.2 -> 0x4200000
Icc -> Version = BaseToBase((cmsUInt32Number) floor(Version * 100.0), 10, 16) << 16;
}
cmsFloat64Number CMSEXPORT cmsGetProfileVersion(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
cmsUInt32Number n = Icc -> Version >> 16;
return BaseToBase(n, 16, 10) / 100.0;
}
// --------------------------------------------------------------------------------------------------------------
// Create profile from IOhandler
cmsHPROFILE CMSEXPORT cmsOpenProfileFromIOhandlerTHR(cmsContext ContextID, cmsIOHANDLER* io)
{
_cmsICCPROFILE* NewIcc;
cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
if (hEmpty == NULL) return NULL;
NewIcc = (_cmsICCPROFILE*) hEmpty;
NewIcc ->IOhandler = io;
if (!_cmsReadHeader(NewIcc)) goto Error;
return hEmpty;
Error:
cmsCloseProfile(hEmpty);
return NULL;
}
// Create profile from disk file
cmsHPROFILE CMSEXPORT cmsOpenProfileFromFileTHR(cmsContext ContextID, const char *lpFileName, const char *sAccess)
{
_cmsICCPROFILE* NewIcc;
cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
if (hEmpty == NULL) return NULL;
NewIcc = (_cmsICCPROFILE*) hEmpty;
NewIcc ->IOhandler = cmsOpenIOhandlerFromFile(ContextID, lpFileName, sAccess);
if (NewIcc ->IOhandler == NULL) goto Error;
if (*sAccess == 'W' || *sAccess == 'w') {
NewIcc -> IsWrite = TRUE;
return hEmpty;
}
if (!_cmsReadHeader(NewIcc)) goto Error;
return hEmpty;
Error:
cmsCloseProfile(hEmpty);
return NULL;
}
cmsHPROFILE CMSEXPORT cmsOpenProfileFromFile(const char *ICCProfile, const char *sAccess)
{
return cmsOpenProfileFromFileTHR(NULL, ICCProfile, sAccess);
}
cmsHPROFILE CMSEXPORT cmsOpenProfileFromStreamTHR(cmsContext ContextID, FILE* ICCProfile, const char *sAccess)
{
_cmsICCPROFILE* NewIcc;
cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
if (hEmpty == NULL) return NULL;
NewIcc = (_cmsICCPROFILE*) hEmpty;
NewIcc ->IOhandler = cmsOpenIOhandlerFromStream(ContextID, ICCProfile);
if (NewIcc ->IOhandler == NULL) goto Error;
if (*sAccess == 'w') {
NewIcc -> IsWrite = TRUE;
return hEmpty;
}
if (!_cmsReadHeader(NewIcc)) goto Error;
return hEmpty;
Error:
cmsCloseProfile(hEmpty);
return NULL;
}
cmsHPROFILE CMSEXPORT cmsOpenProfileFromStream(FILE* ICCProfile, const char *sAccess)
{
return cmsOpenProfileFromStreamTHR(NULL, ICCProfile, sAccess);
}
// Open from memory block
cmsHPROFILE CMSEXPORT cmsOpenProfileFromMemTHR(cmsContext ContextID, const void* MemPtr, cmsUInt32Number dwSize)
{
_cmsICCPROFILE* NewIcc;
cmsHPROFILE hEmpty;
hEmpty = cmsCreateProfilePlaceholder(ContextID);
if (hEmpty == NULL) return NULL;
NewIcc = (_cmsICCPROFILE*) hEmpty;
// Ok, in this case const void* is casted to void* just because open IO handler
// shares read and writting modes. Don't abuse this feature!
NewIcc ->IOhandler = cmsOpenIOhandlerFromMem(ContextID, (void*) MemPtr, dwSize, "r");
if (NewIcc ->IOhandler == NULL) goto Error;
if (!_cmsReadHeader(NewIcc)) goto Error;
return hEmpty;
Error:
cmsCloseProfile(hEmpty);
return NULL;
}
cmsHPROFILE CMSEXPORT cmsOpenProfileFromMem(const void* MemPtr, cmsUInt32Number dwSize)
{
return cmsOpenProfileFromMemTHR(NULL, MemPtr, dwSize);
}
static
cmsBool SanityCheck(_cmsICCPROFILE* profile)
{
cmsIOHANDLER* io;
if (!profile) {
return FALSE;
}
io = profile->IOhandler;
if (!io) {
return FALSE;
}
if (!io->Seek ||
!(io->Seek==NULLSeek || io->Seek==MemorySeek || io->Seek==FileSeek))
{
return FALSE;
}
if (!io->Read ||
!(io->Read==NULLRead || io->Read==MemoryRead || io->Read==FileRead))
{
return FALSE;
}
return TRUE;
}
// Dump tag contents. If the profile is being modified, untouched tags are copied from FileOrig
static
cmsBool SaveTags(_cmsICCPROFILE* Icc, _cmsICCPROFILE* FileOrig)
{
cmsUInt8Number* Data;
cmsUInt32Number i;
cmsUInt32Number Begin;
cmsIOHANDLER* io = Icc ->IOhandler;
cmsTagDescriptor* TagDescriptor;
cmsTagTypeSignature TypeBase;
cmsTagTypeHandler* TypeHandler;
for (i=0; i < Icc -> TagCount; i++) {
if (Icc ->TagNames[i] == 0) continue;
// Linked tags are not written
if (Icc ->TagLinked[i] != (cmsTagSignature) 0) continue;
Icc -> TagOffsets[i] = Begin = io ->UsedSpace;
Data = (cmsUInt8Number*) Icc -> TagPtrs[i];
if (!Data) {
// Reach here if we are copying a tag from a disk-based ICC profile which has not been modified by user.
// In this case a blind copy of the block data is performed
if (SanityCheck(FileOrig) && Icc -> TagOffsets[i]) {
cmsUInt32Number TagSize = FileOrig -> TagSizes[i];
cmsUInt32Number TagOffset = FileOrig -> TagOffsets[i];
void* Mem;
if (!FileOrig ->IOhandler->Seek(FileOrig ->IOhandler, TagOffset)) return FALSE;
Mem = _cmsMalloc(Icc ->ContextID, TagSize);
if (Mem == NULL) return FALSE;
if (FileOrig ->IOhandler->Read(FileOrig->IOhandler, Mem, TagSize, 1) != 1) return FALSE;
if (!io ->Write(io, TagSize, Mem)) return FALSE;
_cmsFree(Icc ->ContextID, Mem);
Icc -> TagSizes[i] = (io ->UsedSpace - Begin);
// Align to 32 bit boundary.
if (! _cmsWriteAlignment(io))
return FALSE;
}
continue;
}
// Should this tag be saved as RAW? If so, tagsizes should be specified in advance (no further cooking is done)
if (Icc ->TagSaveAsRaw[i]) {
if (io -> Write(io, Icc ->TagSizes[i], Data) != 1) return FALSE;
}
else {
// Search for support on this tag
TagDescriptor = _cmsGetTagDescriptor(Icc -> TagNames[i]);
if (TagDescriptor == NULL) continue; // Unsupported, ignore it
TypeHandler = Icc ->TagTypeHandlers[i];
if (TypeHandler == NULL) {
cmsSignalError(Icc ->ContextID, cmsERROR_INTERNAL, "(Internal) no handler for tag %x", Icc -> TagNames[i]);
continue;
}
TypeBase = TypeHandler ->Signature;
if (!_cmsWriteTypeBase(io, TypeBase))
return FALSE;
TypeHandler ->ContextID = Icc ->ContextID;
TypeHandler ->ICCVersion = Icc ->Version;
if (!TypeHandler ->WritePtr(TypeHandler, io, Data, TagDescriptor ->ElemCount)) {
char String[5];
_cmsTagSignature2String(String, (cmsTagSignature) TypeBase);
cmsSignalError(Icc ->ContextID, cmsERROR_WRITE, "Couldn't write type '%s'", String);
return FALSE;
}
}
Icc -> TagSizes[i] = (io ->UsedSpace - Begin);
// Align to 32 bit boundary.
if (! _cmsWriteAlignment(io))
return FALSE;
}
return TRUE;
}
// Fill the offset and size fields for all linked tags
static
cmsBool SetLinks( _cmsICCPROFILE* Icc)
{
cmsUInt32Number i;
for (i=0; i < Icc -> TagCount; i++) {
cmsTagSignature lnk = Icc ->TagLinked[i];
if (lnk != (cmsTagSignature) 0) {
int j = _cmsSearchTag(Icc, lnk, FALSE);
if (j >= 0) {
Icc ->TagOffsets[i] = Icc ->TagOffsets[j];
Icc ->TagSizes[i] = Icc ->TagSizes[j];
}
}
}
return TRUE;
}
// Low-level save to IOHANDLER. It returns the number of bytes used to
// store the profile, or zero on error. io may be NULL and in this case
// no data is written--only sizes are calculated
cmsUInt32Number CMSEXPORT cmsSaveProfileToIOhandler(cmsHPROFILE hProfile, cmsIOHANDLER* io)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
_cmsICCPROFILE Keep;
cmsIOHANDLER* PrevIO;
cmsUInt32Number UsedSpace;
cmsContext ContextID;
memmove(&Keep, Icc, sizeof(_cmsICCPROFILE));
ContextID = cmsGetProfileContextID(hProfile);
PrevIO = Icc ->IOhandler = cmsOpenIOhandlerFromNULL(ContextID);
if (PrevIO == NULL) return 0;
// Pass #1 does compute offsets
if (!_cmsWriteHeader(Icc, 0)) return 0;
if (!SaveTags(Icc, &Keep)) return 0;
UsedSpace = PrevIO ->UsedSpace;
// Pass #2 does save to iohandler
if (io != NULL) {
Icc ->IOhandler = io;
if (!SetLinks(Icc)) goto CleanUp;
if (!_cmsWriteHeader(Icc, UsedSpace)) goto CleanUp;
if (!SaveTags(Icc, &Keep)) goto CleanUp;
}
memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
if (!cmsCloseIOhandler(PrevIO)) return 0;
return UsedSpace;
CleanUp:
cmsCloseIOhandler(PrevIO);
memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
return 0;
}
// Low-level save to disk.
cmsBool CMSEXPORT cmsSaveProfileToFile(cmsHPROFILE hProfile, const char* FileName)
{
cmsContext ContextID = cmsGetProfileContextID(hProfile);
cmsIOHANDLER* io = cmsOpenIOhandlerFromFile(ContextID, FileName, "w");
cmsBool rc;
if (io == NULL) return FALSE;
rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
rc &= cmsCloseIOhandler(io);
if (rc == FALSE) { // remove() is C99 per 7.19.4.1
remove(FileName); // We have to IGNORE return value in this case
}
return rc;
}
// Same as anterior, but for streams
cmsBool CMSEXPORT cmsSaveProfileToStream(cmsHPROFILE hProfile, FILE* Stream)
{
cmsBool rc;
cmsContext ContextID = cmsGetProfileContextID(hProfile);
cmsIOHANDLER* io = cmsOpenIOhandlerFromStream(ContextID, Stream);
if (io == NULL) return FALSE;
rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
rc &= cmsCloseIOhandler(io);
return rc;
}
// Same as anterior, but for memory blocks. In this case, a NULL as MemPtr means calculate needed space only
cmsBool CMSEXPORT cmsSaveProfileToMem(cmsHPROFILE hProfile, void *MemPtr, cmsUInt32Number* BytesNeeded)
{
cmsBool rc;
cmsIOHANDLER* io;
cmsContext ContextID = cmsGetProfileContextID(hProfile);
// Should we just calculate the needed space?
if (MemPtr == NULL) {
*BytesNeeded = cmsSaveProfileToIOhandler(hProfile, NULL);
return (*BytesNeeded == 0 ? FALSE : TRUE);
}
// That is a real write operation
io = cmsOpenIOhandlerFromMem(ContextID, MemPtr, *BytesNeeded, "w");
if (io == NULL) return FALSE;
rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
rc &= cmsCloseIOhandler(io);
return rc;
}
// Closes a profile freeing any involved resources
cmsBool CMSEXPORT cmsCloseProfile(cmsHPROFILE hProfile)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
cmsBool rc = TRUE;
cmsUInt32Number i;
if (!Icc) return FALSE;
// Was open in write mode?
if (Icc ->IsWrite) {
Icc ->IsWrite = FALSE; // Assure no further writting
rc &= cmsSaveProfileToFile(hProfile, Icc ->IOhandler->PhysicalFile);
}
for (i=0; i < Icc -> TagCount; i++) {
if (Icc -> TagPtrs[i]) {
cmsTagTypeHandler* TypeHandler = Icc ->TagTypeHandlers[i];
if (TypeHandler != NULL) {
TypeHandler ->ContextID = Icc ->ContextID; // As an additional parameters
TypeHandler ->ICCVersion = Icc ->Version;
TypeHandler ->FreePtr(TypeHandler, Icc -> TagPtrs[i]);
}
else
_cmsFree(Icc ->ContextID, Icc ->TagPtrs[i]);
}
}
if (Icc ->IOhandler != NULL) {
rc &= cmsCloseIOhandler(Icc->IOhandler);
}
_cmsFree(Icc ->ContextID, Icc); // Free placeholder memory
return rc;
}
// -------------------------------------------------------------------------------------------------------------------
// Returns TRUE if a given tag is supported by a plug-in
static
cmsBool IsTypeSupported(cmsTagDescriptor* TagDescriptor, cmsTagTypeSignature Type)
{
cmsUInt32Number i, nMaxTypes;
nMaxTypes = TagDescriptor->nSupportedTypes;
if (nMaxTypes >= MAX_TYPES_IN_LCMS_PLUGIN)
nMaxTypes = MAX_TYPES_IN_LCMS_PLUGIN;
for (i=0; i < nMaxTypes; i++) {
if (Type == TagDescriptor ->SupportedTypes[i]) return TRUE;
}
return FALSE;
}
// That's the main read function
void* CMSEXPORT cmsReadTag(cmsHPROFILE hProfile, cmsTagSignature sig)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
cmsIOHANDLER* io = Icc ->IOhandler;
cmsTagTypeHandler* TypeHandler;
cmsTagDescriptor* TagDescriptor;
cmsTagTypeSignature BaseType;
cmsUInt32Number Offset, TagSize;
cmsUInt32Number ElemCount;
int n;
n = _cmsSearchTag(Icc, sig, TRUE);
if (n < 0) return NULL; // Not found, return NULL
// If the element is already in memory, return the pointer
if (Icc -> TagPtrs[n]) {
if (Icc ->TagSaveAsRaw[n]) return NULL; // We don't support read raw tags as cooked
return Icc -> TagPtrs[n];
}
// We need to read it. Get the offset and size to the file
Offset = Icc -> TagOffsets[n];
TagSize = Icc -> TagSizes[n];
// Seek to its location
if (!io -> Seek(io, Offset))
return NULL;
// Search for support on this tag
TagDescriptor = _cmsGetTagDescriptor(sig);
if (TagDescriptor == NULL) return NULL; // Unsupported.
// if supported, get type and check if in list
BaseType = _cmsReadTypeBase(io);
if (BaseType == 0) return NULL;
if (!IsTypeSupported(TagDescriptor, BaseType)) return NULL;
TagSize -= 8; // Alredy read by the type base logic
// Get type handler
TypeHandler = _cmsGetTagTypeHandler(BaseType);
if (TypeHandler == NULL) return NULL;
// Read the tag
Icc -> TagTypeHandlers[n] = TypeHandler;
TypeHandler ->ContextID = Icc ->ContextID;
TypeHandler ->ICCVersion = Icc ->Version;
Icc -> TagPtrs[n] = TypeHandler ->ReadPtr(TypeHandler, io, &ElemCount, TagSize);
// The tag type is supported, but something wrong happend and we cannot read the tag.
// let know the user about this (although it is just a warning)
if (Icc -> TagPtrs[n] == NULL) {
char String[5];
_cmsTagSignature2String(String, sig);
cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "Corrupted tag '%s'", String);
return NULL;
}
// This is a weird error that may be a symptom of something more serious, the number of
// stored item is actually less than the number of required elements.
if (ElemCount < TagDescriptor ->ElemCount) {
char String[5];
_cmsTagSignature2String(String, sig);
cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "'%s' Inconsistent number of items: expected %d, got %d",
String, TagDescriptor ->ElemCount, ElemCount);
}
// Return the data
return Icc -> TagPtrs[n];
}
// Get true type of data
cmsTagTypeSignature _cmsGetTagTrueType(cmsHPROFILE hProfile, cmsTagSignature sig)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
cmsTagTypeHandler* TypeHandler;
int n;
// Search for given tag in ICC profile directory
n = _cmsSearchTag(Icc, sig, TRUE);
if (n < 0) return (cmsTagTypeSignature) 0; // Not found, return NULL
// Get the handler. The true type is there
TypeHandler = Icc -> TagTypeHandlers[n];
return TypeHandler ->Signature;
}
// Write a single tag. This just keeps track of the tak into a list of "to be written". If the tag is already
// in that list, the previous version is deleted.
cmsBool CMSEXPORT cmsWriteTag(cmsHPROFILE hProfile, cmsTagSignature sig, const void* data)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
cmsTagTypeHandler* TypeHandler = NULL;
cmsTagDescriptor* TagDescriptor = NULL;
cmsTagTypeSignature Type;
int i;
cmsFloat64Number Version;
char TypeString[5], SigString[5];
if (data == NULL) {
i = _cmsSearchTag(Icc, sig, FALSE);
if (i >= 0)
Icc ->TagNames[i] = (cmsTagSignature) 0;
// Unsupported by now, reserved for future ampliations (delete)
return FALSE;
}
i = _cmsSearchTag(Icc, sig, FALSE);
if (i >=0) {
if (Icc -> TagPtrs[i] != NULL) {
// Already exists. Free previous version
if (Icc ->TagSaveAsRaw[i]) {
_cmsFree(Icc ->ContextID, Icc ->TagPtrs[i]);
}
else {
TypeHandler = Icc ->TagTypeHandlers[i];
if (TypeHandler != NULL) {
TypeHandler ->ContextID = Icc ->ContextID; // As an additional parameter
TypeHandler ->ICCVersion = Icc ->Version;
TypeHandler->FreePtr(TypeHandler, Icc -> TagPtrs[i]);
}
}
}
}
else {
// New one
i = Icc -> TagCount;
if (i >= MAX_TABLE_TAG) {
cmsSignalError(Icc ->ContextID, cmsERROR_RANGE, "Too many tags (%d)", MAX_TABLE_TAG);
return FALSE;
}
Icc -> TagCount++;
}
// This is not raw
Icc ->TagSaveAsRaw[i] = FALSE;
// This is not a link
Icc ->TagLinked[i] = (cmsTagSignature) 0;
// Get information about the TAG.
TagDescriptor = _cmsGetTagDescriptor(sig);
if (TagDescriptor == NULL){
cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported tag '%x'", sig);
return FALSE;
}
// Now we need to know which type to use. It depends on the version.
Version = cmsGetProfileVersion(hProfile);
if (TagDescriptor ->DecideType != NULL) {
// Let the tag descriptor to decide the type base on depending on
// the data. This is useful for example on parametric curves, where
// curves specified by a table cannot be saved as parametric and needs
// to be revented to single v2-curves, even on v4 profiles.
Type = TagDescriptor ->DecideType(Version, data);
}
else {
Type = TagDescriptor ->SupportedTypes[0];
}
// Does the tag support this type?
if (!IsTypeSupported(TagDescriptor, Type)) {
_cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
_cmsTagSignature2String(SigString, sig);
cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported type '%s' for tag '%s'", TypeString, SigString);
return FALSE;
}
// Does we have a handler for this type?
TypeHandler = _cmsGetTagTypeHandler(Type);
if (TypeHandler == NULL) {
_cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
_cmsTagSignature2String(SigString, sig);
cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported type '%s' for tag '%s'", TypeString, SigString);
return FALSE; // Should never happen
}
// Fill fields on icc structure
Icc ->TagTypeHandlers[i] = TypeHandler;
Icc ->TagNames[i] = sig;
Icc ->TagSizes[i] = 0;
Icc ->TagOffsets[i] = 0;
TypeHandler ->ContextID = Icc ->ContextID;
TypeHandler ->ICCVersion = Icc ->Version;
Icc ->TagPtrs[i] = TypeHandler ->DupPtr(TypeHandler, data, TagDescriptor ->ElemCount);
if (Icc ->TagPtrs[i] == NULL) {
_cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
_cmsTagSignature2String(SigString, sig);
cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "Malformed struct in type '%s' for tag '%s'", TypeString, SigString);
return FALSE;
}
return TRUE;
}
// Read and write raw data. The only way those function would work and keep consistence with normal read and write
// is to do an additional step of serialization. That means, readRaw would issue a normal read and then convert the obtained
// data to raw bytes by using the "write" serialization logic. And vice-versa. I know this may end in situations where
// raw data written does not exactly correspond with the raw data proposed to cmsWriteRaw data, but this approach allows
// to write a tag as raw data and the read it as handled.
cmsInt32Number CMSEXPORT cmsReadRawTag(cmsHPROFILE hProfile, cmsTagSignature sig, void* data, cmsUInt32Number BufferSize)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
void *Object;
int i;
cmsIOHANDLER* MemIO;
cmsTagTypeHandler* TypeHandler = NULL;
cmsTagDescriptor* TagDescriptor = NULL;
cmsUInt32Number rc;
cmsUInt32Number Offset, TagSize;
// Search for given tag in ICC profile directory
i = _cmsSearchTag(Icc, sig, TRUE);
if (i < 0) return 0; // Not found, return 0
// It is already read?
if (Icc -> TagPtrs[i] == NULL) {
// No yet, get original position
Offset = Icc ->TagOffsets[i];
TagSize = Icc ->TagSizes[i];
// read the data directly, don't keep copy
if (data != NULL) {
if (BufferSize < TagSize)
TagSize = BufferSize;
if (!Icc ->IOhandler ->Seek(Icc ->IOhandler, Offset)) return 0;
if (!Icc ->IOhandler ->Read(Icc ->IOhandler, data, 1, TagSize)) return 0;
}
return Icc ->TagSizes[i];
}
// The data has been already read, or written. But wait!, maybe the user choosed to save as
// raw data. In this case, return the raw data directly
if (Icc ->TagSaveAsRaw[i]) {
if (data != NULL) {
TagSize = Icc ->TagSizes[i];
if (BufferSize < TagSize)
TagSize = BufferSize;
memmove(data, Icc ->TagPtrs[i], TagSize);
}
return Icc ->TagSizes[i];
}
// Already readed, or previously set by cmsWriteTag(). We need to serialize that
// data to raw in order to maintain consistency.
Object = cmsReadTag(hProfile, sig);
if (Object == NULL) return 0;
// Now we need to serialize to a memory block: just use a memory iohandler
if (data == NULL) {
MemIO = cmsOpenIOhandlerFromNULL(cmsGetProfileContextID(hProfile));
} else{
MemIO = cmsOpenIOhandlerFromMem(cmsGetProfileContextID(hProfile), data, BufferSize, "w");
}
if (MemIO == NULL) return 0;
// Obtain type handling for the tag
TypeHandler = Icc ->TagTypeHandlers[i];
TagDescriptor = _cmsGetTagDescriptor(sig);
if (TagDescriptor == NULL) {
cmsCloseIOhandler(MemIO);
return 0;
}
// Serialize
TypeHandler ->ContextID = Icc ->ContextID;
TypeHandler ->ICCVersion = Icc ->Version;
if (!_cmsWriteTypeBase(MemIO, TypeHandler ->Signature)) {
cmsCloseIOhandler(MemIO);
return 0;
}
if (!TypeHandler ->WritePtr(TypeHandler, MemIO, Object, TagDescriptor ->ElemCount)) {
cmsCloseIOhandler(MemIO);
return 0;
}
// Get Size and close
rc = MemIO ->Tell(MemIO);
cmsCloseIOhandler(MemIO); // Ignore return code this time
return rc;
}
// Similar to the anterior. This function allows to write directly to the ICC profile any data, without
// checking anything. As a rule, mixing Raw with cooked doesn't work, so writting a tag as raw and then reading
// it as cooked without serializing does result into an error. If that is wha you want, you will need to dump
// the profile to memry or disk and then reopen it.
cmsBool CMSEXPORT cmsWriteRawTag(cmsHPROFILE hProfile, cmsTagSignature sig, const void* data, cmsUInt32Number Size)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
int i;
if (!_cmsNewTag(Icc, sig, &i)) return FALSE;
// Mark the tag as being written as RAW
Icc ->TagSaveAsRaw[i] = TRUE;
Icc ->TagNames[i] = sig;
Icc ->TagLinked[i] = (cmsTagSignature) 0;
// Keep a copy of the block
Icc ->TagPtrs[i] = _cmsDupMem(Icc ->ContextID, data, Size);
Icc ->TagSizes[i] = Size;
return TRUE;
}
// Using this function you can collapse several tag entries to the same block in the profile
cmsBool CMSEXPORT cmsLinkTag(cmsHPROFILE hProfile, cmsTagSignature sig, cmsTagSignature dest)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
int i;
if (!_cmsNewTag(Icc, sig, &i)) return FALSE;
// Keep necessary information
Icc ->TagSaveAsRaw[i] = FALSE;
Icc ->TagNames[i] = sig;
Icc ->TagLinked[i] = dest;
Icc ->TagPtrs[i] = NULL;
Icc ->TagSizes[i] = 0;
Icc ->TagOffsets[i] = 0;
return TRUE;
}
// Returns the tag linked to sig, in the case two tags are sharing same resource
cmsTagSignature CMSEXPORT cmsTagLinkedTo(cmsHPROFILE hProfile, cmsTagSignature sig)
{
_cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
int i;
// Search for given tag in ICC profile directory
i = _cmsSearchTag(Icc, sig, FALSE);
if (i < 0) return (cmsTagSignature) 0; // Not found, return 0
return Icc -> TagLinked[i];
}
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