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| 1 /* |
| 2 * Copyright 2015 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef SkWebpCodec_DEFINED |
| 9 #define SkWebpCodec_DEFINED |
| 10 |
| 11 #include "SkCodec.h" |
| 12 #include "SkEncodedFormat.h" |
| 13 #include "SkImageInfo.h" |
| 14 #include "SkTypes.h" |
| 15 |
| 16 class SkStream; |
| 17 |
| 18 class SkWebpCodec final : public SkCodec { |
| 19 public: |
| 20 // Assumes IsWebp was called and returned true. |
| 21 static SkCodec* NewFromStream(SkStream*); |
| 22 static bool IsWebp(SkStream*); |
| 23 protected: |
| 24 Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMCo
lor*, int*) |
| 25 override; |
| 26 SkEncodedFormat onGetEncodedFormat() const override { return kWEBP_SkEncoded
Format; } |
| 27 |
| 28 bool onReallyHasAlpha() const override { |
| 29 return this->getInfo().alphaType() != kOpaque_SkAlphaType; |
| 30 } |
| 31 |
| 32 SkISize onGetScaledDimensions(float desiredScale) const override; |
| 33 private: |
| 34 SkWebpCodec(const SkImageInfo&, SkStream*); |
| 35 |
| 36 typedef SkCodec INHERITED; |
| 37 }; |
| 38 #endif // SkWebpCodec_DEFINED |
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