зеркало из https://github.com/mozilla/gecko-dev.git
60 строки
1.7 KiB
C++
60 строки
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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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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#if !defined(OpusDecoder_h_)
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#define OpusDecoder_h_
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#include "OpusParser.h"
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#include "PlatformDecoderModule.h"
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#include "nsAutoPtr.h"
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namespace mozilla {
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class OpusDataDecoder : public MediaDataDecoder
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{
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public:
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OpusDataDecoder(const AudioInfo& aConfig,
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FlushableTaskQueue* aTaskQueue,
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MediaDataDecoderCallback* aCallback);
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~OpusDataDecoder();
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nsresult Init() override;
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nsresult Input(MediaRawData* aSample) override;
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nsresult Flush() override;
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nsresult Drain() override;
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nsresult Shutdown() override;
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// Return true if mimetype is Opus
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static bool IsOpus(const nsACString& aMimeType);
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private:
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nsresult DecodeHeader(const unsigned char* aData, size_t aLength);
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void Decode (MediaRawData* aSample);
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int DoDecode (MediaRawData* aSample);
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void DoDrain ();
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const AudioInfo& mInfo;
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RefPtr<FlushableTaskQueue> mTaskQueue;
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MediaDataDecoderCallback* mCallback;
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// Opus decoder state
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nsAutoPtr<OpusParser> mOpusParser;
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OpusMSDecoder* mOpusDecoder;
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uint16_t mSkip; // Samples left to trim before playback.
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bool mDecodedHeader;
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// Opus padding should only be discarded on the final packet. Once this
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// is set to true, if the reader attempts to decode any further packets it
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// will raise an error so we can indicate that the file is invalid.
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bool mPaddingDiscarded;
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int64_t mFrames;
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};
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} // namespace mozilla
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#endif
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