зеркало из https://github.com/mozilla/gecko-dev.git
75 строки
2.4 KiB
C++
75 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim:set ts=2 sw=2 sts=2 et cindent: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
#if !defined(OpusDecoder_h_)
|
|
# define OpusDecoder_h_
|
|
|
|
# include "PlatformDecoderModule.h"
|
|
|
|
# include "mozilla/Maybe.h"
|
|
# include "nsAutoPtr.h"
|
|
# include "nsTArray.h"
|
|
|
|
struct OpusMSDecoder;
|
|
|
|
namespace mozilla {
|
|
|
|
class OpusParser;
|
|
|
|
DDLoggedTypeDeclNameAndBase(OpusDataDecoder, MediaDataDecoder);
|
|
|
|
class OpusDataDecoder : public MediaDataDecoder,
|
|
public DecoderDoctorLifeLogger<OpusDataDecoder> {
|
|
public:
|
|
explicit OpusDataDecoder(const CreateDecoderParams& aParams);
|
|
~OpusDataDecoder();
|
|
|
|
RefPtr<InitPromise> Init() override;
|
|
RefPtr<DecodePromise> Decode(MediaRawData* aSample) override;
|
|
RefPtr<DecodePromise> Drain() override;
|
|
RefPtr<FlushPromise> Flush() override;
|
|
RefPtr<ShutdownPromise> Shutdown() override;
|
|
nsCString GetDescriptionName() const override {
|
|
return NS_LITERAL_CSTRING("opus audio decoder");
|
|
}
|
|
|
|
// Return true if mimetype is Opus
|
|
static bool IsOpus(const nsACString& aMimeType);
|
|
|
|
// Pack pre-skip/CodecDelay, given in microseconds, into a
|
|
// MediaByteBuffer. The decoder expects this value to come
|
|
// from the container (if any) and to precede the OpusHead
|
|
// block in the CodecSpecificConfig buffer to verify the
|
|
// values match.
|
|
static void AppendCodecDelay(MediaByteBuffer* config, uint64_t codecDelayUS);
|
|
|
|
private:
|
|
nsresult DecodeHeader(const unsigned char* aData, size_t aLength);
|
|
|
|
RefPtr<DecodePromise> ProcessDecode(MediaRawData* aSample);
|
|
|
|
const AudioInfo& mInfo;
|
|
const RefPtr<TaskQueue> mTaskQueue;
|
|
|
|
// Opus decoder state
|
|
nsAutoPtr<OpusParser> mOpusParser;
|
|
OpusMSDecoder* mOpusDecoder;
|
|
|
|
uint16_t mSkip; // Samples left to trim before playback.
|
|
bool mDecodedHeader;
|
|
|
|
// Opus padding should only be discarded on the final packet. Once this
|
|
// is set to true, if the reader attempts to decode any further packets it
|
|
// will raise an error so we can indicate that the file is invalid.
|
|
bool mPaddingDiscarded;
|
|
int64_t mFrames;
|
|
Maybe<int64_t> mLastFrameTime;
|
|
AutoTArray<uint8_t, 8> mMappingTable;
|
|
AudioConfig::ChannelLayout::ChannelMap mChannelMap;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
#endif
|