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/* -*- 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(WMFAudioOutputSource_h_)
#define WMFAudioOutputSource_h_
#include "WMF.h"
#include "MFTDecoder.h"
#include "mozilla/RefPtr.h"
#include "WMFMediaDataDecoder.h"
extern const GUID CLSID_WebmMfVpxDec;
namespace mozilla {
class WMFAudioMFTManager : public MFTManager {
public:
WMFAudioMFTManager(const AudioInfo& aConfig);
~WMFAudioMFTManager();
bool Init();
HRESULT Input(MediaRawData* aSample) override;
// Note WMF's AAC decoder sometimes output negatively timestamped samples,
// presumably they're the preroll samples, and we strip them. We may return
// a null aOutput in this case.
HRESULT Output(int64_t aStreamOffset,
RefPtr<MediaData>& aOutput) override;
void Shutdown() override;
TrackInfo::TrackType GetType() override {
return TrackInfo::kAudioTrack;
}
const char* GetDescriptionName() const override
{
return "wmf audio decoder";
}
private:
HRESULT UpdateOutputType();
uint32_t mAudioChannels;
uint32_t mChannelsMap;
uint32_t mAudioRate;
nsTArray<BYTE> mUserData;
// The offset, at which playback started since the
// last discontinuity.
media::TimeUnit mAudioTimeOffset;
// The number of audio frames that we've played since the last
// discontinuity.
int64_t mAudioFrameSum;
enum StreamType {
Unknown,
AAC,
MP3
};
StreamType mStreamType;
const GUID& GetMFTGUID();
const GUID& GetMediaSubtypeGUID();
// True if we need to re-initialize mAudioTimeOffset and mAudioFrameSum
// from the next audio packet we decode. This happens after a seek, since
// WMF doesn't mark a stream as having a discontinuity after a seek(0).
bool mMustRecaptureAudioPosition;
};
} // namespace mozilla
#endif // WMFAudioOutputSource_h_
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