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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 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 #ifndef SkImageEncoder_DEFINED | 8 #ifndef SkImageEncoder_DEFINED |
9 #define SkImageEncoder_DEFINED | 9 #define SkImageEncoder_DEFINED |
10 | 10 |
11 #include "SkImageInfo.h" | 11 #include "SkImageInfo.h" |
12 #include "SkTRegistry.h" | 12 #include "SkTRegistry.h" |
13 | 13 |
14 class SkBitmap; | 14 class SkBitmap; |
15 class SkPixelSerializer; | |
16 class SkPixmap; | |
17 class SkData; | 15 class SkData; |
18 class SkWStream; | 16 class SkWStream; |
19 | 17 |
20 class SkImageEncoder { | 18 class SkImageEncoder { |
21 public: | 19 public: |
22 // TODO (scroggo): Merge with SkEncodedFormat. | 20 // TODO (scroggo): Merge with SkEncodedFormat. |
23 enum Type { | 21 enum Type { |
24 kUnknown_Type, | 22 kUnknown_Type, |
25 kBMP_Type, | 23 kBMP_Type, |
26 kGIF_Type, | 24 kGIF_Type, |
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59 * Encode bitmap 'bm' in the desired format, writing results to | 57 * Encode bitmap 'bm' in the desired format, writing results to |
60 * stream 'stream', at quality level 'quality' (which can be in | 58 * stream 'stream', at quality level 'quality' (which can be in |
61 * range 0-100). Returns false on failure. | 59 * range 0-100). Returns false on failure. |
62 */ | 60 */ |
63 bool encodeStream(SkWStream* stream, const SkBitmap& bm, int quality); | 61 bool encodeStream(SkWStream* stream, const SkBitmap& bm, int quality); |
64 | 62 |
65 static SkData* EncodeData(const SkImageInfo&, const void* pixels, size_t row
Bytes, | 63 static SkData* EncodeData(const SkImageInfo&, const void* pixels, size_t row
Bytes, |
66 Type, int quality); | 64 Type, int quality); |
67 static SkData* EncodeData(const SkBitmap&, Type, int quality); | 65 static SkData* EncodeData(const SkBitmap&, Type, int quality); |
68 | 66 |
69 static SkData* EncodeData(const SkPixmap&, Type, int quality); | |
70 | |
71 static bool EncodeFile(const char file[], const SkBitmap&, Type, | 67 static bool EncodeFile(const char file[], const SkBitmap&, Type, |
72 int quality); | 68 int quality); |
73 static bool EncodeStream(SkWStream*, const SkBitmap&, Type, | 69 static bool EncodeStream(SkWStream*, const SkBitmap&, Type, |
74 int quality); | 70 int quality); |
75 | 71 |
76 /** Uses SkImageEncoder to serialize images that are not already | |
77 encoded as SkImageEncoder::kPNG_Type images. */ | |
78 static SkPixelSerializer* CreatePixelSerializer(); | |
79 | |
80 protected: | 72 protected: |
81 /** | 73 /** |
82 * Encode bitmap 'bm' in the desired format, writing results to | 74 * Encode bitmap 'bm' in the desired format, writing results to |
83 * stream 'stream', at quality level 'quality' (which can be in | 75 * stream 'stream', at quality level 'quality' (which can be in |
84 * range 0-100). | 76 * range 0-100). |
85 * | 77 * |
86 * This must be overridden by each SkImageEncoder implementation. | 78 * This must be overridden by each SkImageEncoder implementation. |
87 */ | 79 */ |
88 virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) =
0; | 80 virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) =
0; |
89 }; | 81 }; |
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111 DECLARE_ENCODER_CREATOR(WEBPImageEncoder); | 103 DECLARE_ENCODER_CREATOR(WEBPImageEncoder); |
112 | 104 |
113 #ifdef SK_BUILD_FOR_IOS | 105 #ifdef SK_BUILD_FOR_IOS |
114 DECLARE_ENCODER_CREATOR(PNGImageEncoder_IOS); | 106 DECLARE_ENCODER_CREATOR(PNGImageEncoder_IOS); |
115 #endif | 107 #endif |
116 | 108 |
117 // Typedef to make registering encoder callback easier | 109 // Typedef to make registering encoder callback easier |
118 // This has to be defined outside SkImageEncoder. :( | 110 // This has to be defined outside SkImageEncoder. :( |
119 typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_Enc
odeReg; | 111 typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_Enc
odeReg; |
120 #endif | 112 #endif |
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