Java example source code file (LCMS.c)
The LCMS.c Java example source code
/*
* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include "sun_java2d_cmm_lcms_LCMS.h"
#include "jni_util.h"
#include "Trace.h"
#include "Disposer.h"
#include "lcms2.h"
#include "jlong.h"
#define ALIGNLONG(x) (((x)+3) & ~(3)) // Aligns to DWORD boundary
#ifdef USE_BIG_ENDIAN
#define AdjustEndianess32(a)
#else
static
void AdjustEndianess32(cmsUInt8Number *pByte)
{
cmsUInt8Number temp1;
cmsUInt8Number temp2;
temp1 = *pByte++;
temp2 = *pByte++;
*(pByte-1) = *pByte;
*pByte++ = temp2;
*(pByte-3) = *pByte;
*pByte = temp1;
}
#endif
// Transports to properly encoded values - note that icc profiles does use
// big endian notation.
static
cmsInt32Number TransportValue32(cmsInt32Number Value)
{
cmsInt32Number Temp = Value;
AdjustEndianess32((cmsUInt8Number*) &Temp);
return Temp;
}
#define SigMake(a,b,c,d) \
( ( ((int) ((unsigned char) (a))) << 24) | \
( ((int) ((unsigned char) (b))) << 16) | \
( ((int) ((unsigned char) (c))) << 8) | \
(int) ((unsigned char) (d)))
#define TagIdConst(a, b, c, d) \
((int) SigMake ((a), (b), (c), (d)))
#define SigHead TagIdConst('h','e','a','d')
#define DT_BYTE 0
#define DT_SHORT 1
#define DT_INT 2
#define DT_DOUBLE 3
/* Default temp profile list size */
#define DF_ICC_BUF_SIZE 32
#define ERR_MSG_SIZE 256
#ifdef _MSC_VER
# ifndef snprintf
# define snprintf _snprintf
# endif
#endif
typedef struct lcmsProfile_s {
cmsHPROFILE pf;
} lcmsProfile_t, *lcmsProfile_p;
typedef union {
cmsTagSignature cms;
jint j;
} TagSignature_t, *TagSignature_p;
static jfieldID Trans_renderType_fID;
static jfieldID Trans_ID_fID;
static jfieldID IL_isIntPacked_fID;
static jfieldID IL_dataType_fID;
static jfieldID IL_pixelType_fID;
static jfieldID IL_dataArray_fID;
static jfieldID IL_offset_fID;
static jfieldID IL_nextRowOffset_fID;
static jfieldID IL_width_fID;
static jfieldID IL_height_fID;
static jfieldID IL_imageAtOnce_fID;
JavaVM *javaVM;
void errorHandler(cmsContext ContextID, cmsUInt32Number errorCode,
const char *errorText) {
JNIEnv *env;
char errMsg[ERR_MSG_SIZE];
int count = snprintf(errMsg, ERR_MSG_SIZE,
"LCMS error %d: %s", errorCode, errorText);
if (count < 0 || count >= ERR_MSG_SIZE) {
count = ERR_MSG_SIZE - 1;
}
errMsg[count] = 0;
(*javaVM)->AttachCurrentThread(javaVM, (void**)&env, NULL);
JNU_ThrowByName(env, "java/awt/color/CMMException", errMsg);
}
JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
javaVM = jvm;
cmsSetLogErrorHandler(errorHandler);
return JNI_VERSION_1_6;
}
void LCMS_freeProfile(JNIEnv *env, jlong ptr) {
lcmsProfile_p p = (lcmsProfile_p)jlong_to_ptr(ptr);
if (p != NULL) {
if (p->pf != NULL) {
cmsCloseProfile(p->pf);
}
free(p);
}
}
void LCMS_freeTransform(JNIEnv *env, jlong ID)
{
cmsHTRANSFORM sTrans = jlong_to_ptr(ID);
/* Passed ID is always valid native ref so there is no check for zero */
cmsDeleteTransform(sTrans);
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: createNativeTransform
* Signature: ([JI)J
*/
JNIEXPORT jlong JNICALL Java_sun_java2d_cmm_lcms_LCMS_createNativeTransform
(JNIEnv *env, jclass cls, jlongArray profileIDs, jint renderType,
jint inFormatter, jboolean isInIntPacked,
jint outFormatter, jboolean isOutIntPacked, jobject disposerRef)
{
cmsHPROFILE _iccArray[DF_ICC_BUF_SIZE];
cmsHPROFILE *iccArray = &_iccArray[0];
cmsHTRANSFORM sTrans = NULL;
int i, j, size;
jlong* ids;
size = (*env)->GetArrayLength (env, profileIDs);
ids = (*env)->GetLongArrayElements(env, profileIDs, 0);
if (ids == NULL) {
// An exception should have already been thrown.
return 0L;
}
#ifdef _LITTLE_ENDIAN
/* Reversing data packed into int for LE archs */
if (isInIntPacked) {
inFormatter ^= DOSWAP_SH(1);
}
if (isOutIntPacked) {
outFormatter ^= DOSWAP_SH(1);
}
#endif
if (DF_ICC_BUF_SIZE < size*2) {
iccArray = (cmsHPROFILE*) malloc(
size*2*sizeof(cmsHPROFILE));
if (iccArray == NULL) {
(*env)->ReleaseLongArrayElements(env, profileIDs, ids, 0);
J2dRlsTraceLn(J2D_TRACE_ERROR, "getXForm: iccArray == NULL");
return 0L;
}
}
j = 0;
for (i = 0; i < size; i++) {
cmsColorSpaceSignature cs;
lcmsProfile_p profilePtr = (lcmsProfile_p)jlong_to_ptr(ids[i]);
cmsHPROFILE icc = profilePtr->pf;
iccArray[j++] = icc;
/* Middle non-abstract profiles should be doubled before passing to
* the cmsCreateMultiprofileTransform function
*/
cs = cmsGetColorSpace(icc);
if (size > 2 && i != 0 && i != size - 1 &&
cs != cmsSigXYZData && cs != cmsSigLabData)
{
iccArray[j++] = icc;
}
}
sTrans = cmsCreateMultiprofileTransform(iccArray, j,
inFormatter, outFormatter, renderType, 0);
(*env)->ReleaseLongArrayElements(env, profileIDs, ids, 0);
if (sTrans == NULL) {
J2dRlsTraceLn(J2D_TRACE_ERROR, "LCMS_createNativeTransform: "
"sTrans == NULL");
if ((*env)->ExceptionOccurred(env) == NULL) {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"Cannot get color transform");
}
} else {
Disposer_AddRecord(env, disposerRef, LCMS_freeTransform, ptr_to_jlong(sTrans));
}
if (iccArray != &_iccArray[0]) {
free(iccArray);
}
return ptr_to_jlong(sTrans);
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: loadProfile
* Signature: ([B,Lsun/java2d/cmm/lcms/LCMSProfile;)V
*/
JNIEXPORT jlong JNICALL Java_sun_java2d_cmm_lcms_LCMS_loadProfileNative
(JNIEnv *env, jobject obj, jbyteArray data, jobject disposerRef)
{
jbyte* dataArray;
jint dataSize;
lcmsProfile_p sProf = NULL;
cmsHPROFILE pf;
if (JNU_IsNull(env, data)) {
JNU_ThrowIllegalArgumentException(env, "Invalid profile data");
return 0L;
}
dataArray = (*env)->GetByteArrayElements (env, data, 0);
if (dataArray == NULL) {
// An exception should have already been thrown.
return 0L;
}
dataSize = (*env)->GetArrayLength (env, data);
pf = cmsOpenProfileFromMem((const void *)dataArray,
(cmsUInt32Number) dataSize);
(*env)->ReleaseByteArrayElements (env, data, dataArray, 0);
if (pf == NULL) {
JNU_ThrowIllegalArgumentException(env, "Invalid profile data");
} else {
/* Sanity check: try to save the profile in order
* to force basic validation.
*/
cmsUInt32Number pfSize = 0;
if (!cmsSaveProfileToMem(pf, NULL, &pfSize) ||
pfSize < sizeof(cmsICCHeader))
{
JNU_ThrowIllegalArgumentException(env, "Invalid profile data");
cmsCloseProfile(pf);
pf = NULL;
}
}
if (pf != NULL) {
// create profile holder
sProf = (lcmsProfile_p)malloc(sizeof(lcmsProfile_t));
if (sProf != NULL) {
// register the disposer record
sProf->pf = pf;
Disposer_AddRecord(env, disposerRef, LCMS_freeProfile, ptr_to_jlong(sProf));
} else {
cmsCloseProfile(pf);
}
}
return ptr_to_jlong(sProf);
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: getProfileSizeNative
* Signature: (J)I
*/
JNIEXPORT jint JNICALL Java_sun_java2d_cmm_lcms_LCMS_getProfileSizeNative
(JNIEnv *env, jobject obj, jlong id)
{
lcmsProfile_p sProf = (lcmsProfile_p)jlong_to_ptr(id);
cmsUInt32Number pfSize = 0;
if (cmsSaveProfileToMem(sProf->pf, NULL, &pfSize) && ((jint)pfSize > 0)) {
return (jint)pfSize;
} else {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"Can not access specified profile.");
return -1;
}
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: getProfileDataNative
* Signature: (J[B)V
*/
JNIEXPORT void JNICALL Java_sun_java2d_cmm_lcms_LCMS_getProfileDataNative
(JNIEnv *env, jobject obj, jlong id, jbyteArray data)
{
lcmsProfile_p sProf = (lcmsProfile_p)jlong_to_ptr(id);
jint size;
jbyte* dataArray;
cmsUInt32Number pfSize = 0;
cmsBool status;
// determine actual profile size
if (!cmsSaveProfileToMem(sProf->pf, NULL, &pfSize)) {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"Can not access specified profile.");
return;
}
// verify java buffer capacity
size = (*env)->GetArrayLength(env, data);
if (0 >= size || pfSize > (cmsUInt32Number)size) {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"Insufficient buffer capacity.");
return;
}
dataArray = (*env)->GetByteArrayElements (env, data, 0);
if (dataArray == NULL) {
// An exception should have already been thrown.
return;
}
status = cmsSaveProfileToMem(sProf->pf, dataArray, &pfSize);
(*env)->ReleaseByteArrayElements (env, data, dataArray, 0);
if (!status) {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"Can not access specified profile.");
return;
}
}
/* Get profile header info */
static cmsBool _getHeaderInfo(cmsHPROFILE pf, jbyte* pBuffer, jint bufferSize);
static cmsBool _setHeaderInfo(cmsHPROFILE pf, jbyte* pBuffer, jint bufferSize);
static cmsHPROFILE _writeCookedTag(cmsHPROFILE pfTarget, cmsTagSignature sig, jbyte *pData, jint size);
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: getTagData
* Signature: (JI[B)V
*/
JNIEXPORT jbyteArray JNICALL Java_sun_java2d_cmm_lcms_LCMS_getTagNative
(JNIEnv *env, jobject obj, jlong id, jint tagSig)
{
lcmsProfile_p sProf = (lcmsProfile_p)jlong_to_ptr(id);
TagSignature_t sig;
cmsInt32Number tagSize;
jbyte* dataArray = NULL;
jbyteArray data = NULL;
jint bufSize;
sig.j = tagSig;
if (tagSig == SigHead) {
cmsBool status;
// allocate java array
bufSize = sizeof(cmsICCHeader);
data = (*env)->NewByteArray(env, bufSize);
if (data == NULL) {
// An exception should have already been thrown.
return NULL;
}
dataArray = (*env)->GetByteArrayElements (env, data, 0);
if (dataArray == NULL) {
// An exception should have already been thrown.
return NULL;
}
status = _getHeaderInfo(sProf->pf, dataArray, bufSize);
(*env)->ReleaseByteArrayElements (env, data, dataArray, 0);
if (!status) {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"ICC Profile header not found");
return NULL;
}
return data;
}
if (cmsIsTag(sProf->pf, sig.cms)) {
tagSize = cmsReadRawTag(sProf->pf, sig.cms, NULL, 0);
} else {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"ICC profile tag not found");
return NULL;
}
// allocate java array
data = (*env)->NewByteArray(env, tagSize);
if (data == NULL) {
// An exception should have already been thrown.
return NULL;
}
dataArray = (*env)->GetByteArrayElements (env, data, 0);
if (dataArray == NULL) {
// An exception should have already been thrown.
return NULL;
}
bufSize = cmsReadRawTag(sProf->pf, sig.cms, dataArray, tagSize);
(*env)->ReleaseByteArrayElements (env, data, dataArray, 0);
if (bufSize != tagSize) {
JNU_ThrowByName(env, "java/awt/color/CMMException",
"Can not get tag data.");
return NULL;
}
return data;
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: setTagData
* Signature: (JI[B)V
*/
JNIEXPORT void JNICALL Java_sun_java2d_cmm_lcms_LCMS_setTagDataNative
(JNIEnv *env, jobject obj, jlong id, jint tagSig, jbyteArray data)
{
lcmsProfile_p sProf = (lcmsProfile_p)jlong_to_ptr(id);
cmsHPROFILE pfReplace = NULL;
TagSignature_t sig;
cmsBool status = FALSE;
jbyte* dataArray;
int tagSize;
sig.j = tagSig;
if (JNU_IsNull(env, data)) {
JNU_ThrowIllegalArgumentException(env, "Can not write tag data.");
return;
}
tagSize =(*env)->GetArrayLength(env, data);
dataArray = (*env)->GetByteArrayElements(env, data, 0);
if (dataArray == NULL) {
// An exception should have already been thrown.
return;
}
if (tagSig == SigHead) {
status = _setHeaderInfo(sProf->pf, dataArray, tagSize);
} else {
/*
* New strategy for generic tags: create a place holder,
* dump all existing tags there, dump externally supplied
* tag, and return the new profile to the java.
*/
pfReplace = _writeCookedTag(sProf->pf, sig.cms, dataArray, tagSize);
status = (pfReplace != NULL);
}
(*env)->ReleaseByteArrayElements(env, data, dataArray, 0);
if (!status) {
JNU_ThrowIllegalArgumentException(env, "Can not write tag data.");
} else if (pfReplace != NULL) {
cmsCloseProfile(sProf->pf);
sProf->pf = pfReplace;
}
}
void* getILData (JNIEnv *env, jobject img, jint* pDataType,
jobject* pDataObject) {
void* result = NULL;
*pDataType = (*env)->GetIntField (env, img, IL_dataType_fID);
*pDataObject = (*env)->GetObjectField(env, img, IL_dataArray_fID);
switch (*pDataType) {
case DT_BYTE:
result = (*env)->GetByteArrayElements (env, *pDataObject, 0);
break;
case DT_SHORT:
result = (*env)->GetShortArrayElements (env, *pDataObject, 0);
break;
case DT_INT:
result = (*env)->GetIntArrayElements (env, *pDataObject, 0);
break;
case DT_DOUBLE:
result = (*env)->GetDoubleArrayElements (env, *pDataObject, 0);
break;
}
return result;
}
void releaseILData (JNIEnv *env, void* pData, jint dataType,
jobject dataObject) {
switch (dataType) {
case DT_BYTE:
(*env)->ReleaseByteArrayElements(env,dataObject,(jbyte*)pData,0);
break;
case DT_SHORT:
(*env)->ReleaseShortArrayElements(env,dataObject,(jshort*)pData, 0);
break;
case DT_INT:
(*env)->ReleaseIntArrayElements(env,dataObject,(jint*)pData,0);
break;
case DT_DOUBLE:
(*env)->ReleaseDoubleArrayElements(env,dataObject,(jdouble*)pData,
0);
break;
}
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: colorConvert
* Signature: (Lsun/java2d/cmm/lcms/LCMSTransform;Lsun/java2d/cmm/lcms/LCMSImageLayout;Lsun/java2d/cmm/lcms/LCMSImageLayout;)V
*/
JNIEXPORT void JNICALL Java_sun_java2d_cmm_lcms_LCMS_colorConvert
(JNIEnv *env, jclass obj, jobject trans, jobject src, jobject dst)
{
cmsHTRANSFORM sTrans = NULL;
int srcDType, dstDType;
int srcOffset, srcNextRowOffset, dstOffset, dstNextRowOffset;
int width, height, i;
void* inputBuffer;
void* outputBuffer;
char* inputRow;
char* outputRow;
jobject srcData, dstData;
jboolean srcAtOnce = JNI_FALSE, dstAtOnce = JNI_FALSE;
srcOffset = (*env)->GetIntField (env, src, IL_offset_fID);
srcNextRowOffset = (*env)->GetIntField (env, src, IL_nextRowOffset_fID);
dstOffset = (*env)->GetIntField (env, dst, IL_offset_fID);
dstNextRowOffset = (*env)->GetIntField (env, dst, IL_nextRowOffset_fID);
width = (*env)->GetIntField (env, src, IL_width_fID);
height = (*env)->GetIntField (env, src, IL_height_fID);
srcAtOnce = (*env)->GetBooleanField(env, src, IL_imageAtOnce_fID);
dstAtOnce = (*env)->GetBooleanField(env, dst, IL_imageAtOnce_fID);
sTrans = jlong_to_ptr((*env)->GetLongField (env, trans, Trans_ID_fID));
if (sTrans == NULL) {
J2dRlsTraceLn(J2D_TRACE_ERROR, "LCMS_colorConvert: transform == NULL");
JNU_ThrowByName(env, "java/awt/color/CMMException",
"Cannot get color transform");
return;
}
inputBuffer = getILData (env, src, &srcDType, &srcData);
if (inputBuffer == NULL) {
J2dRlsTraceLn(J2D_TRACE_ERROR, "");
// An exception should have already been thrown.
return;
}
outputBuffer = getILData (env, dst, &dstDType, &dstData);
if (outputBuffer == NULL) {
releaseILData(env, inputBuffer, srcDType, srcData);
// An exception should have already been thrown.
return;
}
inputRow = (char*)inputBuffer + srcOffset;
outputRow = (char*)outputBuffer + dstOffset;
if (srcAtOnce && dstAtOnce) {
cmsDoTransform(sTrans, inputRow, outputRow, width * height);
} else {
for (i = 0; i < height; i++) {
cmsDoTransform(sTrans, inputRow, outputRow, width);
inputRow += srcNextRowOffset;
outputRow += dstNextRowOffset;
}
}
releaseILData(env, inputBuffer, srcDType, srcData);
releaseILData(env, outputBuffer, dstDType, dstData);
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: getProfileID
* Signature: (Ljava/awt/color/ICC_Profile;)Lsun/java2d/cmm/lcms/LCMSProfile
*/
JNIEXPORT jobject JNICALL Java_sun_java2d_cmm_lcms_LCMS_getProfileID
(JNIEnv *env, jclass cls, jobject pf)
{
jclass clsLcmsProfile;
jobject cmmProfile;
jfieldID fid = (*env)->GetFieldID (env,
(*env)->GetObjectClass(env, pf),
"cmmProfile", "Lsun/java2d/cmm/Profile;");
if (fid == NULL) {
return NULL;
}
clsLcmsProfile = (*env)->FindClass(env,
"sun/java2d/cmm/lcms/LCMSProfile");
if (clsLcmsProfile == NULL) {
return NULL;
}
cmmProfile = (*env)->GetObjectField (env, pf, fid);
if (JNU_IsNull(env, cmmProfile)) {
return NULL;
}
if ((*env)->IsInstanceOf(env, cmmProfile, clsLcmsProfile)) {
return cmmProfile;
}
return NULL;
}
/*
* Class: sun_java2d_cmm_lcms_LCMS
* Method: initLCMS
* Signature: (Ljava/lang/Class;Ljava/lang/Class;Ljava/lang/Class;)V
*/
JNIEXPORT void JNICALL Java_sun_java2d_cmm_lcms_LCMS_initLCMS
(JNIEnv *env, jclass cls, jclass Trans, jclass IL, jclass Pf)
{
/* TODO: move initialization of the IDs to the static blocks of
* corresponding classes to avoid problems with invalidating ids by class
* unloading
*/
Trans_renderType_fID = (*env)->GetFieldID (env, Trans, "renderType", "I");
if (Trans_renderType_fID == NULL) {
return;
}
Trans_ID_fID = (*env)->GetFieldID (env, Trans, "ID", "J");
if (Trans_ID_fID == NULL) {
return;
}
IL_isIntPacked_fID = (*env)->GetFieldID (env, IL, "isIntPacked", "Z");
if (IL_isIntPacked_fID == NULL) {
return;
}
IL_dataType_fID = (*env)->GetFieldID (env, IL, "dataType", "I");
if (IL_dataType_fID == NULL) {
return;
}
IL_pixelType_fID = (*env)->GetFieldID (env, IL, "pixelType", "I");
if (IL_pixelType_fID == NULL) {
return;
}
IL_dataArray_fID = (*env)->GetFieldID(env, IL, "dataArray",
"Ljava/lang/Object;");
if (IL_dataArray_fID == NULL) {
return;
}
IL_width_fID = (*env)->GetFieldID (env, IL, "width", "I");
if (IL_width_fID == NULL) {
return;
}
IL_height_fID = (*env)->GetFieldID (env, IL, "height", "I");
if (IL_height_fID == NULL) {
return;
}
IL_offset_fID = (*env)->GetFieldID (env, IL, "offset", "I");
if (IL_offset_fID == NULL) {
return;
}
IL_imageAtOnce_fID = (*env)->GetFieldID (env, IL, "imageAtOnce", "Z");
if (IL_imageAtOnce_fID == NULL) {
return;
}
IL_nextRowOffset_fID = (*env)->GetFieldID (env, IL, "nextRowOffset", "I");
if (IL_nextRowOffset_fID == NULL) {
return;
}
}
static cmsBool _getHeaderInfo(cmsHPROFILE pf, jbyte* pBuffer, jint bufferSize)
{
cmsUInt32Number pfSize = 0;
cmsUInt8Number* pfBuffer = NULL;
cmsBool status = FALSE;
if (!cmsSaveProfileToMem(pf, NULL, &pfSize) ||
pfSize < sizeof(cmsICCHeader) ||
bufferSize < (jint)sizeof(cmsICCHeader))
{
return FALSE;
}
pfBuffer = malloc(pfSize);
if (pfBuffer == NULL) {
return FALSE;
}
// load raw profile data into the buffer
if (cmsSaveProfileToMem(pf, pfBuffer, &pfSize)) {
memcpy(pBuffer, pfBuffer, sizeof(cmsICCHeader));
status = TRUE;
}
free(pfBuffer);
return status;
}
static cmsBool _setHeaderInfo(cmsHPROFILE pf, jbyte* pBuffer, jint bufferSize)
{
cmsICCHeader pfHeader;
if (pBuffer == NULL || bufferSize < (jint)sizeof(cmsICCHeader)) {
return FALSE;
}
memcpy(&pfHeader, pBuffer, sizeof(cmsICCHeader));
// now set header fields, which we can access using the lcms2 public API
cmsSetHeaderFlags(pf, pfHeader.flags);
cmsSetHeaderManufacturer(pf, pfHeader.manufacturer);
cmsSetHeaderModel(pf, pfHeader.model);
cmsSetHeaderAttributes(pf, pfHeader.attributes);
cmsSetHeaderProfileID(pf, (cmsUInt8Number*)&(pfHeader.profileID));
cmsSetHeaderRenderingIntent(pf, pfHeader.renderingIntent);
cmsSetPCS(pf, pfHeader.pcs);
cmsSetColorSpace(pf, pfHeader.colorSpace);
cmsSetDeviceClass(pf, pfHeader.deviceClass);
cmsSetEncodedICCversion(pf, pfHeader.version);
return TRUE;
}
/* Returns new profile handler, if it was created successfully,
NULL otherwise.
*/
static cmsHPROFILE _writeCookedTag(const cmsHPROFILE pfTarget,
const cmsTagSignature sig,
jbyte *pData, jint size)
{
cmsUInt32Number pfSize = 0;
const cmsInt32Number tagCount = cmsGetTagCount(pfTarget);
cmsInt32Number i;
cmsHPROFILE pfSanity = NULL;
cmsICCHeader hdr;
cmsHPROFILE p = cmsCreateProfilePlaceholder(NULL);
if (NULL == p) {
return NULL;
}
memset(&hdr, 0, sizeof(cmsICCHeader));
// Populate the placeholder's header according to target profile
hdr.flags = cmsGetHeaderFlags(pfTarget);
hdr.renderingIntent = cmsGetHeaderRenderingIntent(pfTarget);
hdr.manufacturer = cmsGetHeaderManufacturer(pfTarget);
hdr.model = cmsGetHeaderModel(pfTarget);
hdr.pcs = cmsGetPCS(pfTarget);
hdr.colorSpace = cmsGetColorSpace(pfTarget);
hdr.deviceClass = cmsGetDeviceClass(pfTarget);
hdr.version = cmsGetEncodedICCversion(pfTarget);
cmsGetHeaderAttributes(pfTarget, &hdr.attributes);
cmsGetHeaderProfileID(pfTarget, (cmsUInt8Number*)&hdr.profileID);
cmsSetHeaderFlags(p, hdr.flags);
cmsSetHeaderManufacturer(p, hdr.manufacturer);
cmsSetHeaderModel(p, hdr.model);
cmsSetHeaderAttributes(p, hdr.attributes);
cmsSetHeaderProfileID(p, (cmsUInt8Number*)&(hdr.profileID));
cmsSetHeaderRenderingIntent(p, hdr.renderingIntent);
cmsSetPCS(p, hdr.pcs);
cmsSetColorSpace(p, hdr.colorSpace);
cmsSetDeviceClass(p, hdr.deviceClass);
cmsSetEncodedICCversion(p, hdr.version);
// now write the user supplied tag
if (size <= 0 || !cmsWriteRawTag(p, sig, pData, size)) {
cmsCloseProfile(p);
return NULL;
}
// copy tags from the original profile
for (i = 0; i < tagCount; i++) {
cmsBool isTagReady = FALSE;
const cmsTagSignature s = cmsGetTagSignature(pfTarget, i);
const cmsInt32Number tagSize = cmsReadRawTag(pfTarget, s, NULL, 0);
if (s == sig) {
// skip the user supplied tag
continue;
}
// read raw tag from the original profile
if (tagSize > 0) {
cmsUInt8Number* buf = (cmsUInt8Number*)malloc(tagSize);
if (buf != NULL) {
if (tagSize == cmsReadRawTag(pfTarget, s, buf, tagSize)) {
// now we are ready to write the tag
isTagReady = cmsWriteRawTag(p, s, buf, tagSize);
}
free(buf);
}
}
if (!isTagReady) {
cmsCloseProfile(p);
return NULL;
}
}
// now we have all tags moved to the new profile.
// do some sanity checks: write it to a memory buffer and read again.
if (cmsSaveProfileToMem(p, NULL, &pfSize)) {
void* buf = malloc(pfSize);
if (buf != NULL) {
// load raw profile data into the buffer
if (cmsSaveProfileToMem(p, buf, &pfSize)) {
pfSanity = cmsOpenProfileFromMem(buf, pfSize);
}
free(buf);
}
}
if (pfSanity == NULL) {
// for some reason, we failed to save and read the updated profile
// It likely indicates that the profile is not correct, so we report
// a failure here.
cmsCloseProfile(p);
p = NULL;
} else {
// do final check whether we can read and handle the the target tag.
const void* pTag = cmsReadTag(pfSanity, sig);
if (pTag == NULL) {
// the tag can not be cooked
cmsCloseProfile(p);
p = NULL;
}
cmsCloseProfile(pfSanity);
pfSanity = NULL;
}
return p;
}
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