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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" |
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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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