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ec71e08cf2
Differential Revision: https://phabricator.services.mozilla.com/D41113 --HG-- extra : moz-landing-system : lando
76 lines
2.4 KiB
C++
76 lines
2.4 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 "PlatformDecoderModule.h"
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# include "mozilla/Maybe.h"
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# include "nsAutoPtr.h"
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# include "nsTArray.h"
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struct OpusMSDecoder;
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namespace mozilla {
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class OpusParser;
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DDLoggedTypeDeclNameAndBase(OpusDataDecoder, MediaDataDecoder);
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class OpusDataDecoder : public MediaDataDecoder,
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public DecoderDoctorLifeLogger<OpusDataDecoder> {
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public:
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explicit OpusDataDecoder(const CreateDecoderParams& aParams);
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~OpusDataDecoder();
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RefPtr<InitPromise> Init() override;
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RefPtr<DecodePromise> Decode(MediaRawData* aSample) override;
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RefPtr<DecodePromise> Drain() override;
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RefPtr<FlushPromise> Flush() override;
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RefPtr<ShutdownPromise> Shutdown() override;
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nsCString GetDescriptionName() const override {
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return NS_LITERAL_CSTRING("opus audio decoder");
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}
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// Return true if mimetype is Opus
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static bool IsOpus(const nsACString& aMimeType);
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// Pack pre-skip/CodecDelay, given in microseconds, into a
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// MediaByteBuffer. The decoder expects this value to come
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// from the container (if any) and to precede the OpusHead
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// block in the CodecSpecificConfig buffer to verify the
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// values match.
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static void AppendCodecDelay(MediaByteBuffer* config, uint64_t codecDelayUS);
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private:
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nsresult DecodeHeader(const unsigned char* aData, size_t aLength);
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RefPtr<DecodePromise> ProcessDecode(MediaRawData* aSample);
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const AudioInfo& mInfo;
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const RefPtr<TaskQueue> mTaskQueue;
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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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Maybe<int64_t> mLastFrameTime;
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AutoTArray<uint8_t, 8> mMappingTable;
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AudioConfig::ChannelLayout::ChannelMap mChannelMap;
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bool mDefaultPlaybackDeviceMono;
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};
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} // namespace mozilla
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#endif
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