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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2011 Google Inc. | 3 * Copyright 2011 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 #ifndef SkImageEncoder_DEFINED | 8 #ifndef SkImageEncoder_DEFINED |
9 #define SkImageEncoder_DEFINED | 9 #define SkImageEncoder_DEFINED |
10 | 10 |
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80 /** | 80 /** |
81 * Encode bitmap 'bm' in the desired format, writing results to | 81 * Encode bitmap 'bm' in the desired format, writing results to |
82 * stream 'stream', at quality level 'quality' (which can be in | 82 * stream 'stream', at quality level 'quality' (which can be in |
83 * range 0-100). | 83 * range 0-100). |
84 * | 84 * |
85 * This must be overridden by each SkImageEncoder implementation. | 85 * This must be overridden by each SkImageEncoder implementation. |
86 */ | 86 */ |
87 virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) =
0; | 87 virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) =
0; |
88 }; | 88 }; |
89 | 89 |
90 // This macro declares a global (i.e., non-class owned) creation entry point | |
91 // for each encoder (e.g., CreateJPEGImageEncoder) | |
92 #define DECLARE_ENCODER_CREATOR(codec) \ | |
93 SkImageEncoder *Create ## codec (); | |
94 | |
95 // This macro defines the global creation entry point for each encoder. Each | |
96 // encoder implementation that registers with the encoder factory must call it. | |
97 #define DEFINE_ENCODER_CREATOR(codec) \ | |
98 SkImageEncoder *Create ## codec () { \ | |
99 return SkNEW( Sk ## codec ); \ | |
100 } | |
101 | |
102 // All the encoders known by Skia. Note that, depending on the compiler settings
, | |
103 // not all of these will be available | |
104 /** An ARGBImageEncoder will always write out | |
105 * bitmap.width() * bitmap.height() * 4 | |
106 * bytes. | |
107 */ | |
108 DECLARE_ENCODER_CREATOR(ARGBImageEncoder); | |
109 DECLARE_ENCODER_CREATOR(JPEGImageEncoder); | |
110 DECLARE_ENCODER_CREATOR(PNGImageEncoder); | |
111 DECLARE_ENCODER_CREATOR(KTXImageEncoder); | |
112 DECLARE_ENCODER_CREATOR(WEBPImageEncoder); | |
113 | |
114 #ifdef SK_BUILD_FOR_IOS | |
115 DECLARE_ENCODER_CREATOR(PNGImageEncoder_IOS); | |
116 #endif | 90 #endif |
117 | |
118 // Typedef to make registering encoder callback easier | |
119 // This has to be defined outside SkImageEncoder. :( | |
120 typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_Enc
odeReg; | |
121 #endif | |
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