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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 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 #include "SkCodec.h" | 8 #include "SkCodec.h" |
9 #include "SkColorTable.h" | 9 #include "SkColorTable.h" |
10 #include "SkEncodedFormat.h" | 10 #include "SkEncodedFormat.h" |
11 #include "SkImageInfo.h" | 11 #include "SkImageInfo.h" |
12 #include "SkRefCnt.h" | 12 #include "SkRefCnt.h" |
13 #include "SkSwizzler.h" | 13 #include "SkSwizzler.h" |
14 | 14 |
15 #ifdef SKIA_PNG_PREFIXED | 15 extern "C" { |
16 // this must proceed png.h | 16 #include "png.h" |
17 #include "pngprefix.h" | 17 } |
18 #endif | |
19 #include "png.h" | |
20 | 18 |
21 class SkScanlineDecoder; | 19 class SkScanlineDecoder; |
22 class SkStream; | 20 class SkStream; |
23 | 21 |
24 class SkPngCodec : public SkCodec { | 22 class SkPngCodec : public SkCodec { |
25 public: | 23 public: |
26 // Assumes IsPng was called and returned true. | 24 // Assumes IsPng was called and returned true. |
27 static SkCodec* NewFromStream(SkStream*); | 25 static SkCodec* NewFromStream(SkStream*); |
28 static bool IsPng(SkStream*); | 26 static bool IsPng(SkStream*); |
29 protected: | 27 protected: |
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50 // Helper to set up swizzler and color table. Also calls png_read_update_inf
o. | 48 // Helper to set up swizzler and color table. Also calls png_read_update_inf
o. |
51 Result initializeSwizzler(const SkImageInfo& requestedInfo, void* dst, | 49 Result initializeSwizzler(const SkImageInfo& requestedInfo, void* dst, |
52 size_t rowBytes, const Options&); | 50 size_t rowBytes, const Options&); |
53 bool decodePalette(bool premultiply); | 51 bool decodePalette(bool premultiply); |
54 void finish(); | 52 void finish(); |
55 | 53 |
56 friend class SkPngScanlineDecoder; | 54 friend class SkPngScanlineDecoder; |
57 | 55 |
58 typedef SkCodec INHERITED; | 56 typedef SkCodec INHERITED; |
59 }; | 57 }; |
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