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62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_image_decoders_nsJXLDecoder_h
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#define mozilla_image_decoders_nsJXLDecoder_h
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#include "Decoder.h"
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#include "SurfacePipe.h"
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#include "jxl/decode_cxx.h"
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#include "jxl/thread_parallel_runner_cxx.h"
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namespace mozilla {
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namespace image {
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class RasterImage;
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class nsJXLDecoder final : public Decoder {
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public:
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virtual ~nsJXLDecoder();
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protected:
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LexerResult DoDecode(SourceBufferIterator& aIterator,
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IResumable* aOnResume) override;
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private:
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friend class DecoderFactory;
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// Decoders should only be instantiated via DecoderFactory.
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explicit nsJXLDecoder(RasterImage* aImage);
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size_t PreferredThreadCount();
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enum class State { JXL_DATA, FINISHED_JXL_DATA };
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// Copied from nsPNGDecoder with the same name. Handles R&B channels
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// as well as alpha premultiplication for us. See Issue #2057.
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NextPixel<uint32_t> PackRGBAPixelAndAdvance(uint8_t*& aRawPixelInOut);
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LexerTransition<State> ReadJXLData(const char* aData, size_t aLength);
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LexerTransition<State> FinishedJXLData();
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StreamingLexer<State> mLexer;
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JxlDecoderPtr mDecoder;
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JxlThreadParallelRunnerPtr mParallelRunner;
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Vector<uint8_t> mBuffer;
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Vector<uint8_t> mOutBuffer;
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JxlBasicInfo mInfo{};
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JxlFrameHeader mFrameHeader;
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uint32_t mNumFrames;
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FrameTimeout mTimeout;
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SurfacePipe mPipe;
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bool mContinue;
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};
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_decoders_nsJXLDecoder_h
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