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| 1 /* | 1 /* |
| 2 * Copyright 2010, The Android Open Source Project | 2 * Copyright 2010, The Android Open Source Project |
| 3 * | 3 * |
| 4 * Licensed under the Apache License, Version 2.0 (the "License"); | 4 * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 * you may not use this file except in compliance with the License. | 5 * you may not use this file except in compliance with the License. |
| 6 * You may obtain a copy of the License at | 6 * You may obtain a copy of the License at |
| 7 * | 7 * |
| 8 * http://www.apache.org/licenses/LICENSE-2.0 | 8 * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 * | 9 * |
| 10 * Unless required by applicable law or agreed to in writing, software | 10 * Unless required by applicable law or agreed to in writing, software |
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| 91 } | 91 } |
| 92 | 92 |
| 93 class SkWEBPImageDecoder: public SkImageDecoder { | 93 class SkWEBPImageDecoder: public SkImageDecoder { |
| 94 public: | 94 public: |
| 95 SkWEBPImageDecoder() { | 95 SkWEBPImageDecoder() { |
| 96 fOrigWidth = 0; | 96 fOrigWidth = 0; |
| 97 fOrigHeight = 0; | 97 fOrigHeight = 0; |
| 98 fHasAlpha = 0; | 98 fHasAlpha = 0; |
| 99 } | 99 } |
| 100 | 100 |
| 101 Format getFormat() const SK_OVERRIDE { | 101 Format getFormat() const override { |
| 102 return kWEBP_Format; | 102 return kWEBP_Format; |
| 103 } | 103 } |
| 104 | 104 |
| 105 protected: | 105 protected: |
| 106 bool onBuildTileIndex(SkStreamRewindable *stream, int *width, int *height) S
K_OVERRIDE; | 106 bool onBuildTileIndex(SkStreamRewindable *stream, int *width, int *height) o
verride; |
| 107 bool onDecodeSubset(SkBitmap* bitmap, const SkIRect& rect) SK_OVERRIDE; | 107 bool onDecodeSubset(SkBitmap* bitmap, const SkIRect& rect) override; |
| 108 Result onDecode(SkStream* stream, SkBitmap* bm, Mode) SK_OVERRIDE; | 108 Result onDecode(SkStream* stream, SkBitmap* bm, Mode) override; |
| 109 | 109 |
| 110 private: | 110 private: |
| 111 /** | 111 /** |
| 112 * Called when determining the output config to request to webp. | 112 * Called when determining the output config to request to webp. |
| 113 * If the image does not have alpha, there is no need to premultiply. | 113 * If the image does not have alpha, there is no need to premultiply. |
| 114 * If the caller wants unpremultiplied colors, that is respected. | 114 * If the caller wants unpremultiplied colors, that is respected. |
| 115 */ | 115 */ |
| 116 bool shouldPremultiply() const { | 116 bool shouldPremultiply() const { |
| 117 return SkToBool(fHasAlpha) && !this->getRequireUnpremultipliedColors(); | 117 return SkToBool(fHasAlpha) && !this->getRequireUnpremultipliedColors(); |
| 118 } | 118 } |
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| 576 } | 576 } |
| 577 | 577 |
| 578 static int stream_writer(const uint8_t* data, size_t data_size, | 578 static int stream_writer(const uint8_t* data, size_t data_size, |
| 579 const WebPPicture* const picture) { | 579 const WebPPicture* const picture) { |
| 580 SkWStream* const stream = (SkWStream*)picture->custom_ptr; | 580 SkWStream* const stream = (SkWStream*)picture->custom_ptr; |
| 581 return stream->write(data, data_size) ? 1 : 0; | 581 return stream->write(data, data_size) ? 1 : 0; |
| 582 } | 582 } |
| 583 | 583 |
| 584 class SkWEBPImageEncoder : public SkImageEncoder { | 584 class SkWEBPImageEncoder : public SkImageEncoder { |
| 585 protected: | 585 protected: |
| 586 bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) SK_OVERRID
E; | 586 bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) override; |
| 587 | 587 |
| 588 private: | 588 private: |
| 589 typedef SkImageEncoder INHERITED; | 589 typedef SkImageEncoder INHERITED; |
| 590 }; | 590 }; |
| 591 | 591 |
| 592 bool SkWEBPImageEncoder::onEncode(SkWStream* stream, const SkBitmap& bm, | 592 bool SkWEBPImageEncoder::onEncode(SkWStream* stream, const SkBitmap& bm, |
| 593 int quality) { | 593 int quality) { |
| 594 const bool hasAlpha = !bm.isOpaque(); | 594 const bool hasAlpha = !bm.isOpaque(); |
| 595 int bpp = -1; | 595 int bpp = -1; |
| 596 const ScanlineImporter scanline_import = ChooseImporter(bm.colorType(), hasA
lpha, &bpp); | 596 const ScanlineImporter scanline_import = ChooseImporter(bm.colorType(), hasA
lpha, &bpp); |
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| 668 return SkImageDecoder::kUnknown_Format; | 668 return SkImageDecoder::kUnknown_Format; |
| 669 } | 669 } |
| 670 | 670 |
| 671 static SkImageEncoder* sk_libwebp_efactory(SkImageEncoder::Type t) { | 671 static SkImageEncoder* sk_libwebp_efactory(SkImageEncoder::Type t) { |
| 672 return (SkImageEncoder::kWEBP_Type == t) ? SkNEW(SkWEBPImageEncoder) : NUL
L; | 672 return (SkImageEncoder::kWEBP_Type == t) ? SkNEW(SkWEBPImageEncoder) : NUL
L; |
| 673 } | 673 } |
| 674 | 674 |
| 675 static SkImageDecoder_DecodeReg gDReg(sk_libwebp_dfactory); | 675 static SkImageDecoder_DecodeReg gDReg(sk_libwebp_dfactory); |
| 676 static SkImageDecoder_FormatReg gFormatReg(get_format_webp); | 676 static SkImageDecoder_FormatReg gFormatReg(get_format_webp); |
| 677 static SkImageEncoder_EncodeReg gEReg(sk_libwebp_efactory); | 677 static SkImageEncoder_EncodeReg gEReg(sk_libwebp_efactory); |
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