// ***************************************************************** -*- C++ -*-
/*
* Copyright (C) 2004-2018 Exiv2 authors
* This program is part of the Exiv2 distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
*/
/*
File: psdimage.cpp
Author(s): Marco Piovanelli, Ovolab (marco)
Michael Ulbrich (mul)
History: 05-Mar-2007, marco: created
*/
// *****************************************************************************
// included header files
#include "config.h"
#include "psdimage.hpp"
#include "jpgimage.hpp"
#include "image.hpp"
#include "basicio.hpp"
#include "error.hpp"
#include "futils.hpp"
#include "safe_op.hpp"
#include "enforce.hpp"
// + standard includes
#include <string>
#include <cstring>
#include <iostream>
#include <iomanip>
#include <cassert>
#include <memory>
// Todo: Consolidate with existing code in struct Photoshop (jpgimage.hpp):
// Extend this helper to a proper class with all required functionality,
// then move it here or into a separate file?
//! @cond IGNORE
struct PhotoshopResourceBlock {
uint32_t resourceType; // one of the markers in Photoshop::irbId_[]
uint16_t resourceId;
unsigned char resourceName[2]; // Pascal string (length byte + characters), padded to an even size -- this assumes the empty string
uint32_t resourceDataSize;
};
//! @endcond
// Photoshop resource IDs (Cf. <http://search.cpan.org/~bettelli/Image-MetaData-JPEG-0.15/lib/Image/MetaData/JPEG/TagLists.pod>)
enum {
kPhotoshopResourceID_Photoshop2Info = 0x03e8, // [obsolete -- Photoshop 2.0 only] General information -- contains five 2-byte values: number of channels, rows, columns, depth and mode
kPhotoshopResourceID_MacintoshClassicPrintInfo = 0x03e9, // [optional] Macintosh classic print record (120 bytes)
kPhotoshopResourceID_MacintoshCarbonPrintInfo = 0x03ea, // [optional] Macintosh carbon print info (variable-length XML format)
kPhotoshopResourceID_Photoshop2ColorTable = 0x03eb, // [obsolete -- Photoshop 2.0 only] Indexed color table
kPhotoshopResourceID_ResolutionInfo = 0x03ed, // PhotoshopResolutionInfo structure (see below)
kPhotoshopResourceID_AlphaChannelsNames = 0x03ee, // as a series of Pstrings
kPhotoshopResourceID_DisplayInfo = 0x03ef, // see appendix A in Photoshop SDK
kPhotoshopResourceID_PStringCaption = 0x03f0, // [optional] the caption, as a Pstring
kPhotoshopResourceID_BorderInformation = 0x03f1, // border width and units
kPhotoshopResourceID_BackgroundColor = 0x03f2, // see additional Adobe information
kPhotoshopResourceID_PrintFlags = 0x03f3, // labels, crop marks, colour bars, ecc...
kPhotoshopResourceID_BWHalftoningInfo = 0x03f4, // Gray-scale and multich. half-toning info
kPhotoshopResourceID_ColorHalftoningInfo = 0x03f5, // Colour half-toning information
kPhotoshopResourceID_DuotoneHalftoningInfo = 0x03f6, // Duo-tone half-toning information
kPhotoshopResourceID_BWTransferFunc = 0x03f7, // Gray-scale and multich. transfer function
kPhotoshopResourceID_ColorTransferFuncs = 0x03f8, // Colour transfer function
kPhotoshopResourceID_DuotoneTransferFuncs = 0x03f9, // Duo-tone transfer function
kPhotoshopResourceID_DuotoneImageInfo = 0x03fa, // Duo-tone image information
kPhotoshopResourceID_EffectiveBW = 0x03fb, // two bytes for the effective black and white values
kPhotoshopResourceID_ObsoletePhotoshopTag1 = 0x03fc, // [obsolete]
kPhotoshopResourceID_EPSOptions = 0x03fd, // Encapsulated Postscript options
kPhotoshopResourceID_QuickMaskInfo = 0x03fe, // Quick Mask information. 2 bytes containing Quick Mask channel ID, 1 byte boolean indicating whether the mask was initially empty.
kPhotoshopResourceID_ObsoletePhotoshopTag2 = 0x03ff, // [obsolete]
kPhotoshopResourceID_LayerStateInfo = 0x0400, // index of target layer (0 means bottom)
kPhotoshopResourceID_WorkingPathInfo = 0x0401, // should not be saved to the file
kPhotoshopResourceID_LayersGroupInfo = 0x0402, // for grouping layers together
kPhotoshopResourceID_ObsoletePhotoshopTag3 = 0x0403, // [obsolete] ??
kPhotoshopResourceID_IPTC_NAA = 0x0404, // IPTC/NAA data
kPhotoshopResourceID_RawImageMode = 0x0405, // image mode for raw format files
kPhotoshopResourceID_JPEGQuality = 0x0406, // [private]
kPhotoshopResourceID_GridGuidesInfo = 0x0408, // see additional Adobe information
kPhotoshopResourceID_ThumbnailResource = 0x0409, // see additional Adobe information
kPhotoshopResourceID_CopyrightFlag = 0x040a, // true if image is copyrighted
kPhotoshopResourceID_URL = 0x040b, // text string with a resource locator
kPhotoshopResourceID_ThumbnailResource2 = 0x040c, // see additional Adobe information
kPhotoshopResourceID_GlobalAngle = 0x040d, // global lighting angle for effects layer
kPhotoshopResourceID_ColorSamplersResource = 0x040e, // see additional Adobe information
kPhotoshopResourceID_ICCProfile = 0x040f, // see notes from Internat. Color Consortium
kPhotoshopResourceID_Watermark = 0x0410, // one byte
kPhotoshopResourceID_ICCUntagged = 0x0411, // 1 means intentionally untagged
kPhotoshopResourceID_EffectsVisible = 0x0412, // 1 byte to show/hide all effects layers
kPhotoshopResourceID_SpotHalftone = 0x0413, // version, length and data
kPhotoshopResourceID_IDsBaseValue = 0x0414, // base value for new layers ID's
kPhotoshopResourceID_UnicodeAlphaNames = 0x0415, // length plus Unicode string
kPhotoshopResourceID_IndexedColourTableCount = 0x0416, // [Photoshop 6.0 and later] 2 bytes
kPhotoshopResourceID_TransparentIndex = 0x0417, // [Photoshop 6.0 and later] 2 bytes
kPhotoshopResourceID_GlobalAltitude = 0x0419, // [Photoshop 6.0 and later] 4 bytes
kPhotoshopResourceID_Slices = 0x041a, // [Photoshop 6.0 and later] see additional Adobe info
kPhotoshopResourceID_WorkflowURL = 0x041b, // [Photoshop 6.0 and later] 4 bytes length + Unicode string
kPhotoshopResourceID_JumpToXPEP = 0x041c, // [Photoshop 6.0 and later] see additional Adobe info
kPhotoshopResourceID_AlphaIdentifiers = 0x041d, // [Photoshop 6.0 and later] 4*(n+1) bytes
kPhotoshopResourceID_URLList = 0x041e, // [Photoshop 6.0 and later] structured Unicode URL's
kPhotoshopResourceID_VersionInfo = 0x0421, // [Photoshop 6.0 and later] see additional Adobe info
kPhotoshopResourceID_ExifInfo = 0x0422, // [Photoshop 7.0?] Exif metadata
kPhotoshopResourceID_XMPPacket = 0x0424, // [Photoshop 7.0?] XMP packet -- see http://www.adobe.com/devnet/xmp/pdfs/xmp_specification.pdf
kPhotoshopResourceID_ClippingPathName = 0x0bb7, // [Photoshop 6.0 and later] name of clipping path
kPhotoshopResourceID_MorePrintFlags = 0x2710 // [Photoshop 6.0 and later] Print flags information. 2 bytes version (=1), 1 byte center crop marks, 1 byte (=0), 4 bytes bleed width value, 2 bytes bleed width scale.
};
// *****************************************************************************
// class member definitions
namespace Exiv2 {
PsdImage::PsdImage(BasicIo::AutoPtr io)
: Image(ImageType::psd, mdExif | mdIptc | mdXmp, io)
{
} // PsdImage::PsdImage
std::string PsdImage::mimeType() const
{
return "image/x-photoshop";
}
void PsdImage::setComment(const std::string& /*comment*/)
{
// not supported
throw(Error(kerInvalidSettingForImage, "Image comment", "Photoshop"));
}
void PsdImage::readMetadata()
{
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "Exiv2::PsdImage::readMetadata: Reading Photoshop file " << io_->path() << "\n";
#endif
if (io_->open() != 0)
{
throw Error(kerDataSourceOpenFailed, io_->path(), strError());
}
IoCloser closer(*io_);
// Ensure that this is the correct image type
if (!isPsdType(*io_, false))
{
if (io_->error() || io_->eof()) throw Error(kerFailedToReadImageData);
throw Error(kerNotAnImage, "Photoshop");
}
clearMetadata();
/*
The Photoshop header goes as follows -- all numbers are in big-endian byte order:
offset length name description
====== ======= ========= =========
0 4 bytes signature always '8BPS'
4 2 bytes version always equal to 1
6 6 bytes reserved must be zero
12 2 bytes channels number of channels in the image, including alpha channels (1 to 24)
14 4 bytes rows the height of the image in pixels
18 4 bytes columns the width of the image in pixels
22 2 bytes depth the number of bits per channel
24 2 bytes mode the color mode of the file; Supported values are: Bitmap=0; Grayscale=1; Indexed=2; RGB=3; CMYK=4; Multichannel=7; Duotone=8; Lab=9
*/
byte buf[26];
if (io_->read(buf, 26) != 26)
{
throw Error(kerNotAnImage, "Photoshop");
}
pixelWidth_ = getLong(buf + 18, bigEndian);
pixelHeight_ = getLong(buf + 14, bigEndian);
// immediately following the image header is the color mode data section,
// the first four bytes of which specify the byte size of the whole section
if (io_->read(buf, 4) != 4)
{
throw Error(kerNotAnImage, "Photoshop");
}
// skip it
uint32_t colorDataLength = getULong(buf, bigEndian);
if (io_->seek(colorDataLength, BasicIo::cur))
{
throw Error(kerNotAnImage, "Photoshop");
}
// after the color data section, comes a list of resource blocks, preceded by the total byte size
if (io_->read(buf, 4) != 4)
{
throw Error(kerNotAnImage, "Photoshop");
}
uint32_t resourcesLength = getULong(buf, bigEndian);
enforce(resourcesLength < io_->size(), Exiv2::kerCorruptedMetadata);
while (resourcesLength > 0)
{
enforce(resourcesLength >= 8, Exiv2::kerCorruptedMetadata);
resourcesLength -= 8;
if (io_->read(buf, 8) != 8)
{
throw Error(kerNotAnImage, "Photoshop");
}
if (!Photoshop::isIrb(buf, 4))
{
break; // bad resource type
}
uint16_t resourceId = getUShort(buf + 4, bigEndian);
uint32_t resourceNameLength = buf[6] & ~1;
// skip the resource name, plus any padding
enforce(resourceNameLength <= resourcesLength, Exiv2::kerCorruptedMetadata);
resourcesLength -= resourceNameLength;
io_->seek(resourceNameLength, BasicIo::cur);
// read resource size
enforce(resourcesLength >= 4, Exiv2::kerCorruptedMetadata);
resourcesLength -= 4;
if (io_->read(buf, 4) != 4)
{
throw Error(kerNotAnImage, "Photoshop");
}
uint32_t resourceSize = getULong(buf, bigEndian);
uint32_t curOffset = io_->tell();
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << std::hex << "resourceId: " << resourceId << std::dec << " length: " << resourceSize << std::hex << "\n";
#endif
enforce(resourceSize <= resourcesLength, Exiv2::kerCorruptedMetadata);
readResourceBlock(resourceId, resourceSize);
resourceSize = (resourceSize + 1) & ~1; // pad to even
enforce(resourceSize <= resourcesLength, Exiv2::kerCorruptedMetadata);
resourcesLength -= resourceSize;
io_->seek(curOffset + resourceSize, BasicIo::beg);
}
} // PsdImage::readMetadata
void PsdImage::readResourceBlock(uint16_t resourceId, uint32_t resourceSize)
{
switch(resourceId)
{
case kPhotoshopResourceID_IPTC_NAA:
{
DataBuf rawIPTC(resourceSize);
io_->read(rawIPTC.pData_, rawIPTC.size_);
if (io_->error() || io_->eof()) throw Error(kerFailedToReadImageData);
if (IptcParser::decode(iptcData_, rawIPTC.pData_, rawIPTC.size_)) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "Failed to decode IPTC metadata.\n";
#endif
iptcData_.clear();
}
break;
}
case kPhotoshopResourceID_ExifInfo:
{
DataBuf rawExif(resourceSize);
io_->read(rawExif.pData_, rawExif.size_);
if (io_->error() || io_->eof()) throw Error(kerFailedToReadImageData);
ByteOrder bo = ExifParser::decode(exifData_, rawExif.pData_, rawExif.size_);
setByteOrder(bo);
if (rawExif.size_ > 0 && byteOrder() == invalidByteOrder) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "Failed to decode Exif metadata.\n";
#endif
exifData_.clear();
}
break;
}
case kPhotoshopResourceID_XMPPacket:
{
DataBuf xmpPacket(resourceSize);
io_->read(xmpPacket.pData_, xmpPacket.size_);
if (io_->error() || io_->eof()) throw Error(kerFailedToReadImageData);
xmpPacket_.assign(reinterpret_cast<char *>(xmpPacket.pData_), xmpPacket.size_);
if (xmpPacket_.size() > 0 && XmpParser::decode(xmpData_, xmpPacket_)) {
#ifndef SUPPRESS_WARNINGS
EXV_WARNING << "Failed to decode XMP metadata.\n";
#endif
}
break;
}
// - PS 4.0 preview data is fetched from ThumbnailResource
// - PS >= 5.0 preview data is fetched from ThumbnailResource2
case kPhotoshopResourceID_ThumbnailResource:
case kPhotoshopResourceID_ThumbnailResource2:
{
/*
Photoshop thumbnail resource header
offset length name description
====== ======== ==== ===========
0 4 bytes format = 1 (kJpegRGB). Also supports kRawRGB (0).
4 4 bytes width Width of thumbnail in pixels.
8 4 bytes height Height of thumbnail in pixels.
12 4 bytes widthbytes Padded row bytes as (width * bitspixel + 31) / 32 * 4.
16 4 bytes size Total size as widthbytes * height * planes
20 4 bytes compressedsize Size after compression. Used for consistentcy check.
24 2 bytes bitspixel = 24. Bits per pixel.
26 2 bytes planes = 1. Number of planes.
28 variable data JFIF data in RGB format.
Note: For resource ID 1033 the data is in BGR format.
*/
byte buf[28];
if (io_->read(buf, 28) != 28)
{
throw Error(kerNotAnImage, "Photoshop");
}
NativePreview nativePreview;
nativePreview.position_ = io_->tell();
nativePreview.size_ = getLong(buf + 20, bigEndian); // compressedsize
nativePreview.width_ = getLong(buf + 4, bigEndian);
nativePreview.height_ = getLong(buf + 8, bigEndian);
const uint32_t format = getLong(buf + 0, bigEndian);
if (nativePreview.size_ > 0 && nativePreview.position_ >= 0) {
io_->seek(static_cast<long>(nativePreview.size_), BasicIo::cur);
if (io_->error() || io_->eof()) throw Error(kerFailedToReadImageData);
if (format == 1) {
nativePreview.filter_ = "";
nativePreview.mimeType_ = "image/jpeg";
nativePreviews_.push_back(nativePreview);
} else {
// unsupported format of native preview
}
}
break;
}
default:
{
break;
}
}
} // PsdImage::readResourceBlock
void PsdImage::writeMetadata()
{
if (io_->open() != 0)
{
throw Error(kerDataSourceOpenFailed, io_->path(), strError());
}
IoCloser closer(*io_);
BasicIo::AutoPtr tempIo(new MemIo);
assert (tempIo.get() != 0);
doWriteMetadata(*tempIo); // may throw
io_->close();
io_->transfer(*tempIo); // may throw
} // PsdImage::writeMetadata
void PsdImage::doWriteMetadata(BasicIo& outIo)
{
if (!io_->isopen()) throw Error(kerInputDataReadFailed);
if (!outIo.isopen()) throw Error(kerImageWriteFailed);
#ifdef EXIV2_DEBUG_MESSAGES
std::cout << "Exiv2::PsdImage::doWriteMetadata: Writing PSD file " << io_->path() << "\n";
std::cout << "Exiv2::PsdImage::doWriteMetadata: tmp file created " << outIo.path() << "\n";
#endif
// Ensure that this is the correct image type
if (!isPsdType(*io_, true)) {
if (io_->error() || io_->eof()) throw Error(kerInputDataReadFailed);
throw Error(kerNoImageInInputData);
}
io_->seek(0, BasicIo::beg); // rewind
DataBuf lbuf(4096);
byte buf[8];
// Get Photoshop header from original file
byte psd_head[26];
if (io_->read(psd_head, 26) != 26) throw Error(kerNotAnImage, "Photoshop");
// Write Photoshop header data out to new PSD file
if (outIo.write(psd_head, 26) != 26) throw Error(kerImageWriteFailed);
// Read colorDataLength from original PSD
if (io_->read(buf, 4) != 4) throw Error(kerNotAnImage, "Photoshop");
uint32_t colorDataLength = getULong(buf, bigEndian);
// Write colorDataLength
ul2Data(buf, colorDataLength, bigEndian);
if (outIo.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << std::dec << "colorDataLength: " << colorDataLength << "\n";
#endif
// Copy colorData
uint32_t readTotal = 0;
long toRead = 0;
while (readTotal < colorDataLength) {
toRead = static_cast<long>(colorDataLength - readTotal) < lbuf.size_
? static_cast<long>(colorDataLength - readTotal) : lbuf.size_;
if (io_->read(lbuf.pData_, toRead) != toRead) throw Error(kerNotAnImage, "Photoshop");
readTotal += toRead;
if (outIo.write(lbuf.pData_, toRead) != toRead) throw Error(kerImageWriteFailed);
}
if (outIo.error()) throw Error(kerImageWriteFailed);
uint32_t resLenOffset = io_->tell(); // remember for later update
// Read length of all resource blocks from original PSD
if (io_->read(buf, 4) != 4) throw Error(kerNotAnImage, "Photoshop");
uint32_t oldResLength = getULong(buf, bigEndian);
uint32_t newResLength = 0;
// Write oldResLength (will be updated later)
ul2Data(buf, oldResLength, bigEndian);
if (outIo.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << std::dec << "oldResLength: " << oldResLength << "\n";
#endif
// Iterate over original resource blocks.
// Replace or insert IPTC, EXIF and XMP
// Original resource blocks assumed to be sorted ASC
bool iptcDone = false;
bool exifDone = false;
bool xmpDone = false;
while (oldResLength > 0) {
if (io_->read(buf, 8) != 8) throw Error(kerNotAnImage, "Photoshop");
// read resource type and ID
uint32_t resourceType = getULong(buf, bigEndian);
if (!Photoshop::isIrb(buf, 4))
{
throw Error(kerNotAnImage, "Photoshop"); // bad resource type
}
uint16_t resourceId = getUShort(buf + 4, bigEndian);
uint32_t resourceNameLength = buf[6];
uint32_t adjResourceNameLen = resourceNameLength & ~1;
unsigned char resourceNameFirstChar = buf[7];
// read rest of resource name, plus any padding
DataBuf resName(256);
if ( io_->read(resName.pData_, adjResourceNameLen)
!= static_cast<long>(adjResourceNameLen)) throw Error(kerNotAnImage, "Photoshop");
// read resource size (actual length w/o padding!)
if (io_->read(buf, 4) != 4) throw Error(kerNotAnImage, "Photoshop");
uint32_t resourceSize = getULong(buf, bigEndian);
uint32_t pResourceSize = (resourceSize + 1) & ~1; // padded resource size
uint32_t curOffset = io_->tell();
// Write IPTC_NAA resource block
if ((resourceId == kPhotoshopResourceID_IPTC_NAA ||
resourceId > kPhotoshopResourceID_IPTC_NAA) && iptcDone == false) {
newResLength += writeIptcData(iptcData_, outIo);
iptcDone = true;
}
// Write ExifInfo resource block
else if ((resourceId == kPhotoshopResourceID_ExifInfo ||
resourceId > kPhotoshopResourceID_ExifInfo) && exifDone == false) {
newResLength += writeExifData(exifData_, outIo);
exifDone = true;
}
// Write XMPpacket resource block
else if ((resourceId == kPhotoshopResourceID_XMPPacket ||
resourceId > kPhotoshopResourceID_XMPPacket) && xmpDone == false) {
newResLength += writeXmpData(xmpData_, outIo);
xmpDone = true;
}
// Copy all other resource blocks
if ( resourceId != kPhotoshopResourceID_IPTC_NAA
&& resourceId != kPhotoshopResourceID_ExifInfo
&& resourceId != kPhotoshopResourceID_XMPPacket) {
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << std::hex << "copy : resourceType: " << resourceType << "\n";
std::cerr << std::hex << "copy : resourceId: " << resourceId << "\n";
std::cerr << std::dec;
#endif
// Copy resource block to new PSD file
ul2Data(buf, resourceType, bigEndian);
if (outIo.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
us2Data(buf, resourceId, bigEndian);
if (outIo.write(buf, 2) != 2) throw Error(kerImageWriteFailed);
// Write resource name as Pascal string
buf[0] = resourceNameLength & 0x00ff;
if (outIo.write(buf, 1) != 1) throw Error(kerImageWriteFailed);
buf[0] = resourceNameFirstChar;
if (outIo.write(buf, 1) != 1) throw Error(kerImageWriteFailed);
if ( outIo.write(resName.pData_, adjResourceNameLen)
!= static_cast<long>(adjResourceNameLen)) throw Error(kerImageWriteFailed);
ul2Data(buf, resourceSize, bigEndian);
if (outIo.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
readTotal = 0;
toRead = 0;
while (readTotal < pResourceSize) {
toRead = static_cast<long>(pResourceSize - readTotal) < lbuf.size_
? static_cast<long>(pResourceSize - readTotal) : lbuf.size_;
if (io_->read(lbuf.pData_, toRead) != toRead) {
throw Error(kerNotAnImage, "Photoshop");
}
readTotal += toRead;
if (outIo.write(lbuf.pData_, toRead) != toRead) throw Error(kerImageWriteFailed);
}
if (outIo.error()) throw Error(kerImageWriteFailed);
newResLength += pResourceSize + adjResourceNameLen + 12;
}
io_->seek(curOffset + pResourceSize, BasicIo::beg);
oldResLength -= (12 + adjResourceNameLen + pResourceSize);
}
// Append IPTC_NAA resource block, if not yet written
if (iptcDone == false) {
newResLength += writeIptcData(iptcData_, outIo);
iptcDone = true;
}
// Append ExifInfo resource block, if not yet written
if (exifDone == false) {
newResLength += writeExifData(exifData_, outIo);
exifDone = true;
}
// Append XmpPacket resource block, if not yet written
if (xmpDone == false) {
newResLength += writeXmpData(xmpData_, outIo);
xmpDone = true;
}
// Populate the fake data, only make sense for remoteio, httpio and sshio.
// it avoids allocating memory for parts of the file that contain image-date.
io_->populateFakeData();
// Copy remaining data
long readSize = 0;
while ((readSize=io_->read(lbuf.pData_, lbuf.size_))) {
if (outIo.write(lbuf.pData_, readSize) != readSize) throw Error(kerImageWriteFailed);
}
if (outIo.error()) throw Error(kerImageWriteFailed);
// Update length of resources
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "newResLength: " << newResLength << "\n";
#endif
outIo.seek(resLenOffset, BasicIo::beg);
ul2Data(buf, newResLength, bigEndian);
if (outIo.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
} // PsdImage::doWriteMetadata
uint32_t PsdImage::writeIptcData(const IptcData& iptcData, BasicIo& out) const
{
uint32_t resLength = 0;
byte buf[8];
if (iptcData.count() > 0) {
DataBuf rawIptc = IptcParser::encode(iptcData);
if (rawIptc.size_ > 0) {
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << std::hex << "write: resourceId: " << kPhotoshopResourceID_IPTC_NAA << "\n";
std::cerr << std::dec << "Writing IPTC_NAA: size: " << rawIptc.size_ << "\n";
#endif
if (out.write(reinterpret_cast<const byte*>(Photoshop::irbId_[0]), 4) != 4) throw Error(kerImageWriteFailed);
us2Data(buf, kPhotoshopResourceID_IPTC_NAA, bigEndian);
if (out.write(buf, 2) != 2) throw Error(kerImageWriteFailed);
us2Data(buf, 0, bigEndian); // NULL resource name
if (out.write(buf, 2) != 2) throw Error(kerImageWriteFailed);
ul2Data(buf, rawIptc.size_, bigEndian);
if (out.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
// Write encoded Iptc data
if (out.write(rawIptc.pData_, rawIptc.size_) != rawIptc.size_) throw Error(kerImageWriteFailed);
resLength += rawIptc.size_ + 12;
if (rawIptc.size_ & 1) // even padding
{
buf[0] = 0;
if (out.write(buf, 1) != 1) throw Error(kerImageWriteFailed);
resLength++;
}
}
}
return resLength;
} // PsdImage::writeIptcData
uint32_t PsdImage::writeExifData(const ExifData& exifData, BasicIo& out)
{
uint32_t resLength = 0;
byte buf[8];
if (exifData.count() > 0) {
Blob blob;
ByteOrder bo = byteOrder();
if (bo == invalidByteOrder) {
bo = littleEndian;
setByteOrder(bo);
}
ExifParser::encode(blob, bo, exifData);
if (blob.size() > 0) {
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << std::hex << "write: resourceId: " << kPhotoshopResourceID_ExifInfo << "\n";
std::cerr << std::dec << "Writing ExifInfo: size: " << blob.size() << "\n";
#endif
if (out.write(reinterpret_cast<const byte*>(Photoshop::irbId_[0]), 4) != 4) throw Error(kerImageWriteFailed);
us2Data(buf, kPhotoshopResourceID_ExifInfo, bigEndian);
if (out.write(buf, 2) != 2) throw Error(kerImageWriteFailed);
us2Data(buf, 0, bigEndian); // NULL resource name
if (out.write(buf, 2) != 2) throw Error(kerImageWriteFailed);
ul2Data(buf, static_cast<uint32_t>(blob.size()), bigEndian);
if (out.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
// Write encoded Exif data
if (out.write(&blob[0], static_cast<long>(blob.size())) != static_cast<long>(blob.size())) throw Error(kerImageWriteFailed);
resLength += static_cast<long>(blob.size()) + 12;
if (blob.size() & 1) // even padding
{
buf[0] = 0;
if (out.write(buf, 1) != 1) throw Error(kerImageWriteFailed);
resLength++;
}
}
}
return resLength;
} // PsdImage::writeExifData
uint32_t PsdImage::writeXmpData(const XmpData& xmpData, BasicIo& out) const
{
std::string xmpPacket;
uint32_t resLength = 0;
byte buf[8];
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << "writeXmpFromPacket(): " << writeXmpFromPacket() << "\n";
#endif
// writeXmpFromPacket(true);
if (writeXmpFromPacket() == false) {
if (XmpParser::encode(xmpPacket, xmpData) > 1) {
#ifndef SUPPRESS_WARNINGS
EXV_ERROR << "Failed to encode XMP metadata.\n";
#endif
}
}
if (xmpPacket.size() > 0) {
#ifdef EXIV2_DEBUG_MESSAGES
std::cerr << std::hex << "write: resourceId: " << kPhotoshopResourceID_XMPPacket << "\n";
std::cerr << std::dec << "Writing XMPPacket: size: " << xmpPacket.size() << "\n";
#endif
if (out.write(reinterpret_cast<const byte*>(Photoshop::irbId_[0]), 4) != 4) throw Error(kerImageWriteFailed);
us2Data(buf, kPhotoshopResourceID_XMPPacket, bigEndian);
if (out.write(buf, 2) != 2) throw Error(kerImageWriteFailed);
us2Data(buf, 0, bigEndian); // NULL resource name
if (out.write(buf, 2) != 2) throw Error(kerImageWriteFailed);
ul2Data(buf, static_cast<uint32_t>(xmpPacket.size()), bigEndian);
if (out.write(buf, 4) != 4) throw Error(kerImageWriteFailed);
// Write XMPPacket
if (out.write(reinterpret_cast<const byte*>(xmpPacket.data()), static_cast<long>(xmpPacket.size()))
!= static_cast<long>(xmpPacket.size())) throw Error(kerImageWriteFailed);
if (out.error()) throw Error(kerImageWriteFailed);
resLength += static_cast<uint32_t>(xmpPacket.size()) + 12;
if (xmpPacket.size() & 1) // even padding
{
buf[0] = 0;
if (out.write(buf, 1) != 1) throw Error(kerImageWriteFailed);
resLength++;
}
}
return resLength;
} // PsdImage::writeXmpData
// *************************************************************************
// free functions
Image::AutoPtr newPsdInstance(BasicIo::AutoPtr io, bool /*create*/)
{
Image::AutoPtr image(new PsdImage(io));
if (!image->good())
{
image.reset();
}
return image;
}
bool isPsdType(BasicIo& iIo, bool advance)
{
const int32_t len = 6;
const unsigned char PsdHeader[6] = { '8', 'B', 'P', 'S', 0, 1 };
byte buf[len];
iIo.read(buf, len);
if (iIo.error() || iIo.eof())
{
return false;
}
bool matched = (memcmp(buf, PsdHeader, len) == 0);
if (!advance || !matched)
{
iIo.seek(-len, BasicIo::cur);
}
return matched;
}
} // namespace Exiv2