зеркало из https://github.com/mozilla/gecko-dev.git
68 строки
2.0 KiB
C++
68 строки
2.0 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(SampleSink_h_)
|
|
#define SampleSink_h_
|
|
|
|
#include "BaseFilter.h"
|
|
#include "DirectShowUtils.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "mozilla/RefPtr.h"
|
|
#include "mozilla/ReentrantMonitor.h"
|
|
|
|
namespace mozilla {
|
|
|
|
class SampleSink {
|
|
public:
|
|
SampleSink();
|
|
virtual ~SampleSink();
|
|
|
|
// Sets the audio format of the incoming samples. The upstream filter
|
|
// calls this. This makes a copy.
|
|
void SetAudioFormat(const WAVEFORMATEX* aInFormat);
|
|
|
|
// Copies the format of incoming audio samples into into *aOutFormat.
|
|
void GetAudioFormat(WAVEFORMATEX* aOutFormat);
|
|
|
|
// Called when a sample is delivered by the DirectShow graph to the sink.
|
|
// The decode thread retrieves the sample by calling WaitForSample().
|
|
// Blocks if there's already a sample waiting to be consumed by the decode
|
|
// thread.
|
|
HRESULT Receive(IMediaSample* aSample);
|
|
|
|
// Retrieves a sample from the sample queue, blocking until one becomes
|
|
// available, or until an error occurs. Returns S_FALSE on EOS.
|
|
HRESULT Extract(RefPtr<IMediaSample>& aOutSample);
|
|
|
|
// Unblocks any threads waiting in GetSample().
|
|
// Clears mSample, which unblocks upstream stream.
|
|
void Flush();
|
|
|
|
// Opens up the sink to receive more samples in PutSample().
|
|
// Clears EOS flag.
|
|
void Reset();
|
|
|
|
// Marks that we've reacehd the end of stream.
|
|
void SetEOS();
|
|
|
|
// Returns whether we're at end of stream.
|
|
bool AtEOS();
|
|
|
|
private:
|
|
// All data in this class is syncronized by mMonitor.
|
|
ReentrantMonitor mMonitor;
|
|
RefPtr<IMediaSample> mSample;
|
|
|
|
// Format of the audio stream we're receiving.
|
|
WAVEFORMATEX mAudioFormat;
|
|
|
|
bool mIsFlushing;
|
|
bool mAtEOS;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
#endif // SampleSink_h_
|