зеркало из https://github.com/mozilla/gecko-dev.git
62 строки
1.7 KiB
C++
62 строки
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_nsAVIFDecoder_h
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#define mozilla_image_decoders_nsAVIFDecoder_h
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#include "Decoder.h"
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#include "mp4parse.h"
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#include "SurfacePipe.h"
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#include "aom/aom_decoder.h"
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#include "dav1d/dav1d.h"
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namespace mozilla {
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namespace image {
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class RasterImage;
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class nsAVIFDecoder final : public Decoder {
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public:
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virtual ~nsAVIFDecoder();
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DecoderType GetType() const override { return DecoderType::AVIF; }
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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 nsAVIFDecoder(RasterImage* aImage);
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static intptr_t ReadSource(uint8_t* aDestBuf, uintptr_t aDestBufSize,
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void* aUserData);
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static void FreeDav1dData(const uint8_t* buf, void* cookie);
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bool DecodeWithDav1d(const Mp4parseByteData& aPrimaryItem,
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layers::PlanarYCbCrData& aDecodedData);
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bool DecodeWithAOM(const Mp4parseByteData& aPrimaryItem,
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layers::PlanarYCbCrData& aDecodedData);
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Mp4parseAvifParser* mParser;
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Maybe<Variant<aom_codec_ctx_t, Dav1dContext*>> mCodecContext;
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Maybe<Dav1dPicture> mDav1dPicture;
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Vector<uint8_t> mBufferedData;
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/// Pointer to the next place to read from mBufferedData
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const uint8_t* mReadCursor = nullptr;
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};
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_decoders_nsAVIFDecoder_h
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