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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 #ifndef SkWebpCodec_DEFINED | 8 #ifndef SkWebpCodec_DEFINED |
9 #define SkWebpCodec_DEFINED | 9 #define SkWebpCodec_DEFINED |
10 | 10 |
11 #include "SkCodec.h" | 11 #include "SkCodec.h" |
12 #include "SkColorSpace.h" | 12 #include "SkColorSpace.h" |
13 #include "SkEncodedFormat.h" | 13 #include "SkEncodedFormat.h" |
14 #include "SkImageInfo.h" | 14 #include "SkImageInfo.h" |
15 #include "SkTypes.h" | 15 #include "SkTypes.h" |
16 | 16 |
17 class SkStream; | 17 class SkStream; |
| 18 extern "C" { |
| 19 struct WebPDemuxer; |
| 20 void WebPDemuxDelete(WebPDemuxer* dmux); |
| 21 } |
18 | 22 |
19 static const size_t WEBP_VP8_HEADER_SIZE = 30; | 23 static const size_t WEBP_VP8_HEADER_SIZE = 30; |
20 | 24 |
21 class SkWebpCodec final : public SkCodec { | 25 class SkWebpCodec final : public SkCodec { |
22 public: | 26 public: |
23 // Assumes IsWebp was called and returned true. | 27 // Assumes IsWebp was called and returned true. |
24 static SkCodec* NewFromStream(SkStream*); | 28 static SkCodec* NewFromStream(SkStream*); |
25 static bool IsWebp(const void*, size_t); | 29 static bool IsWebp(const void*, size_t); |
26 protected: | 30 protected: |
27 Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMCo
lor*, int*, int*) | 31 Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMCo
lor*, int*, int*) |
28 override; | 32 override; |
29 SkEncodedFormat onGetEncodedFormat() const override { return kWEBP_SkEncoded
Format; } | 33 SkEncodedFormat onGetEncodedFormat() const override { return kWEBP_SkEncoded
Format; } |
30 | 34 |
31 SkISize onGetScaledDimensions(float desiredScale) const override; | 35 SkISize onGetScaledDimensions(float desiredScale) const override; |
32 | 36 |
33 bool onDimensionsSupported(const SkISize&) override; | 37 bool onDimensionsSupported(const SkISize&) override; |
34 | 38 |
35 bool onGetValidSubset(SkIRect* /* desiredSubset */) const override; | 39 bool onGetValidSubset(SkIRect* /* desiredSubset */) const override; |
36 private: | 40 private: |
37 SkWebpCodec(int width, int height, const SkEncodedInfo&, sk_sp<SkColorSpace>
, SkStream*); | 41 SkWebpCodec(int width, int height, const SkEncodedInfo&, sk_sp<SkColorSpace>
, SkStream*, |
| 42 WebPDemuxer*, sk_sp<SkData>); |
| 43 |
| 44 SkAutoTCallVProc<WebPDemuxer, WebPDemuxDelete> fDemux; |
| 45 |
| 46 // fDemux has a pointer into this data. |
| 47 // This should not be freed until the decode is completed. |
| 48 sk_sp<SkData> fData; |
38 | 49 |
39 typedef SkCodec INHERITED; | 50 typedef SkCodec INHERITED; |
40 }; | 51 }; |
41 #endif // SkWebpCodec_DEFINED | 52 #endif // SkWebpCodec_DEFINED |
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