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/*
* Copyright (C) 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "SkData.h"
#include "SkFlate.h"
#include "SkPDFCatalog.h"
#include "SkPDFStream.h"
#include "SkStream.h"
SkPDFStream::SkPDFStream(SkStream* stream) {
if (SkFlate::HaveFlate())
SkAssertResult(SkFlate::Deflate(stream, &fCompressedData));
if (SkFlate::HaveFlate() &&
fCompressedData.getOffset() < stream->getLength()) {
fLength = fCompressedData.getOffset();
insert("Filter", new SkPDFName("FlateDecode"))->unref();
} else {
fCompressedData.reset();
fPlainData = stream;
fLength = fPlainData->getLength();
}
insertInt("Length", fLength);
}
SkPDFStream::~SkPDFStream() {
}
void SkPDFStream::emitObject(SkWStream* stream, SkPDFCatalog* catalog,
bool indirect) {
if (indirect)
return emitIndirectObject(stream, catalog);
this->INHERITED::emitObject(stream, catalog, false);
stream->writeText(" stream\n");
if (fPlainData.get()) {
stream->write(fPlainData->getMemoryBase(), fLength);
} else {
SkAutoDataUnref data(fCompressedData.copyToData());
stream->write(data.data(), fLength);
}
stream->writeText("\nendstream");
}
size_t SkPDFStream::getOutputSize(SkPDFCatalog* catalog, bool indirect) {
if (indirect)
return getIndirectOutputSize(catalog);
return this->INHERITED::getOutputSize(catalog, false) +
strlen(" stream\n\nendstream") + fLength;
}
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