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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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69 /** | 69 /** |
70 * Encode bitmap 'bm' in the desired format, writing results to | 70 * Encode bitmap 'bm' in the desired format, writing results to |
71 * stream 'stream', at quality level 'quality' (which can be in | 71 * stream 'stream', at quality level 'quality' (which can be in |
72 * range 0-100). | 72 * range 0-100). |
73 * | 73 * |
74 * This must be overridden by each SkImageEncoder implementation. | 74 * This must be overridden by each SkImageEncoder implementation. |
75 */ | 75 */ |
76 virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) =
0; | 76 virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) =
0; |
77 }; | 77 }; |
78 | 78 |
79 // This macro declares a global (i.e., non-class owned) creation entry point | |
80 // for each encoder (e.g., CreateJPEGImageEncoder) | |
81 #define DECLARE_ENCODER_CREATOR(codec) \ | |
82 SkImageEncoder *Create ## codec (); | |
83 | |
84 // This macro defines the global creation entry point for each encoder. Each | |
85 // encoder implementation that registers with the encoder factory must call it. | |
86 #define DEFINE_ENCODER_CREATOR(codec) \ | |
87 SkImageEncoder *Create ## codec () { \ | |
88 return SkNEW( Sk ## codec ); \ | |
89 } | |
90 | |
91 // All the encoders known by Skia. Note that, depending on the compiler settings
, | |
92 // not all of these will be available | |
93 /** An ARGBImageEncoder will always write out | |
94 * bitmap.width() * bitmap.height() * 4 | |
95 * bytes. | |
96 */ | |
97 DECLARE_ENCODER_CREATOR(ARGBImageEncoder); | |
98 DECLARE_ENCODER_CREATOR(JPEGImageEncoder); | |
99 DECLARE_ENCODER_CREATOR(PNGImageEncoder); | |
100 DECLARE_ENCODER_CREATOR(KTXImageEncoder); | |
101 DECLARE_ENCODER_CREATOR(WEBPImageEncoder); | |
102 | |
103 #ifdef SK_BUILD_FOR_IOS | |
104 DECLARE_ENCODER_CREATOR(PNGImageEncoder_IOS); | |
105 #endif | 79 #endif |
106 | |
107 // Typedef to make registering encoder callback easier | |
108 // This has to be defined outside SkImageEncoder. :( | |
109 typedef SkTRegistry<SkImageEncoder*(*)(SkImageEncoder::Type)> SkImageEncoder_Enc
odeReg; | |
110 #endif | |
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