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comparison: image/decoders/nsGIFDecoder2.h
image/decoders/nsGIFDecoder2.h
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- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:d2143c6f7fa4 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef _nsGIFDecoder2_h | |
| 8 #define _nsGIFDecoder2_h | |
| 9 | |
| 10 #include "nsCOMPtr.h" | |
| 11 #include "Decoder.h" | |
| 12 | |
| 13 #include "GIF2.h" | |
| 14 | |
| 15 namespace mozilla { | |
| 16 namespace image { | |
| 17 class RasterImage; | |
| 18 | |
| 19 ////////////////////////////////////////////////////////////////////// | |
| 20 // nsGIFDecoder2 Definition | |
| 21 | |
| 22 class nsGIFDecoder2 : public Decoder | |
| 23 { | |
| 24 public: | |
| 25 | |
| 26 nsGIFDecoder2(RasterImage &aImage); | |
| 27 ~nsGIFDecoder2(); | |
| 28 | |
| 29 virtual void WriteInternal(const char* aBuffer, uint32_t aCount, DecodeStrategy aStrategy); | |
| 30 virtual void FinishInternal(); | |
| 31 virtual Telemetry::ID SpeedHistogram(); | |
| 32 | |
| 33 private: | |
| 34 /* These functions will be called when the decoder has a decoded row, | |
| 35 * frame size information, etc. */ | |
| 36 | |
| 37 void BeginGIF(); | |
| 38 void BeginImageFrame(uint16_t aDepth); | |
| 39 void EndImageFrame(); | |
| 40 void FlushImageData(); | |
| 41 void FlushImageData(uint32_t fromRow, uint32_t rows); | |
| 42 | |
| 43 nsresult GifWrite(const uint8_t * buf, uint32_t numbytes); | |
| 44 uint32_t OutputRow(); | |
| 45 bool DoLzw(const uint8_t *q); | |
| 46 bool SetHold(const uint8_t* buf, uint32_t count, | |
| 47 const uint8_t* buf2 = nullptr, uint32_t count2 = 0); | |
| 48 | |
| 49 inline int ClearCode() const { return 1 << mGIFStruct.datasize; } | |
| 50 | |
| 51 int32_t mCurrentRow; | |
| 52 int32_t mLastFlushedRow; | |
| 53 | |
| 54 uint32_t mOldColor; // The old value of the transparent pixel | |
| 55 | |
| 56 // The frame number of the currently-decoding frame when we're in the middle | |
| 57 // of decoding it, and -1 otherwise. | |
| 58 int32_t mCurrentFrame; | |
| 59 | |
| 60 uint8_t mCurrentPass; | |
| 61 uint8_t mLastFlushedPass; | |
| 62 uint8_t mColorMask; // Apply this to the pixel to keep within colormap | |
| 63 bool mGIFOpen; | |
| 64 bool mSawTransparency; | |
| 65 | |
| 66 gif_struct mGIFStruct; | |
| 67 }; | |
| 68 | |
| 69 } // namespace image | |
| 70 } // namespace mozilla | |
| 71 | |
| 72 #endif |
