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| 1 /* | 1 /* |
| 2 * Copyright 2010 Google Inc. | 2 * Copyright 2010 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 | 8 |
| 9 #include "SkData.h" | 9 #include "SkData.h" |
| 10 #include "SkDeflate.h" | 10 #include "SkDeflate.h" |
| (...skipping 15 matching lines...) Expand all Loading... |
| 26 this->INHERITED::emitObject(stream, objNumMap, substitutes); | 26 this->INHERITED::emitObject(stream, objNumMap, substitutes); |
| 27 // duplicate (a cheap operation) preserves const on fCompressedData. | 27 // duplicate (a cheap operation) preserves const on fCompressedData. |
| 28 std::unique_ptr<SkStreamRewindable> dup(fCompressedData->duplicate()); | 28 std::unique_ptr<SkStreamRewindable> dup(fCompressedData->duplicate()); |
| 29 SkASSERT(dup); | 29 SkASSERT(dup); |
| 30 SkASSERT(dup->hasLength()); | 30 SkASSERT(dup->hasLength()); |
| 31 stream->writeText(" stream\n"); | 31 stream->writeText(" stream\n"); |
| 32 stream->writeStream(dup.get(), dup->getLength()); | 32 stream->writeStream(dup.get(), dup->getLength()); |
| 33 stream->writeText("\nendstream"); | 33 stream->writeText("\nendstream"); |
| 34 } | 34 } |
| 35 | 35 |
| 36 |
| 36 void SkPDFStream::setData(SkStream* stream) { | 37 void SkPDFStream::setData(SkStream* stream) { |
| 37 SkASSERT(!fCompressedData); // Only call this function once. | 38 SkASSERT(!fCompressedData); // Only call this function once. |
| 38 SkASSERT(stream); | 39 SkASSERT(stream); |
| 39 // Code assumes that the stream starts at the beginning. | 40 // Code assumes that the stream starts at the beginning. |
| 40 | 41 |
| 42 #ifdef SK_PDF_LESS_COMPRESSION |
| 43 std::unique_ptr<SkStreamRewindable> duplicate(stream->duplicate()); |
| 44 if (duplicate && duplicate->hasLength()) { |
| 45 this->insertInt("Length", duplicate->getLength()); |
| 46 fCompressedData.reset(duplicate.release()); |
| 47 return; |
| 48 } |
| 49 #endif |
| 50 |
| 41 SkDynamicMemoryWStream compressedData; | 51 SkDynamicMemoryWStream compressedData; |
| 42 SkDeflateWStream deflateWStream(&compressedData); | 52 SkDeflateWStream deflateWStream(&compressedData); |
| 43 SkStreamCopy(&deflateWStream, stream); | 53 SkStreamCopy(&deflateWStream, stream); |
| 44 deflateWStream.finalize(); | 54 deflateWStream.finalize(); |
| 45 size_t length = compressedData.bytesWritten(); | 55 size_t length = compressedData.bytesWritten(); |
| 46 | 56 |
| 47 if (stream->hasLength()) { | 57 if (stream->hasLength()) { |
| 48 std::unique_ptr<SkStreamRewindable> dup(stream->duplicate()); | 58 std::unique_ptr<SkStreamRewindable> dup(stream->duplicate()); |
| 49 if (dup && dup->hasLength() && | 59 if (dup && dup->hasLength() && |
| 50 dup->getLength() <= length + strlen("/Filter_/FlateDecode_")) { | 60 dup->getLength() <= length + strlen("/Filter_/FlateDecode_")) { |
| 51 this->insertInt("Length", dup->getLength()); | 61 this->insertInt("Length", dup->getLength()); |
| 52 fCompressedData.reset(dup.release()); | 62 fCompressedData.reset(dup.release()); |
| 53 return; | 63 return; |
| 54 } | 64 } |
| 55 } | 65 } |
| 56 fCompressedData.reset(compressedData.detachAsStream()); | 66 fCompressedData.reset(compressedData.detachAsStream()); |
| 57 this->insertName("Filter", "FlateDecode"); | 67 this->insertName("Filter", "FlateDecode"); |
| 58 this->insertInt("Length", length); | 68 this->insertInt("Length", length); |
| 59 } | 69 } |
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