blob: aad71b8431ec8dc51cb6cd8dc2f2ae56114f5a29 [file] [log] [blame]
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "media/base/audio_renderer_sink.h"
namespace base {
class SingleThreadTaskRunner;
namespace media {
class AudioBus;
class ClocklessAudioSinkThread;
class OutputDevice;
// Implementation of an AudioRendererSink that consumes the audio as fast as
// possible. This class does not support multiple Play()/Pause() events.
class MEDIA_EXPORT ClocklessAudioSink
: NON_EXPORTED_BASE(public AudioRendererSink) {
// AudioRendererSink implementation.
void Initialize(const AudioParameters& params,
RenderCallback* callback) override;
void Start() override;
void Stop() override;
void Pause() override;
void Play() override;
bool SetVolume(double volume) override;
OutputDevice* GetOutputDevice() override;
// Returns the time taken to consume all the audio.
base::TimeDelta render_time() { return playback_time_; }
// Enables audio frame hashing. Must be called prior to Initialize().
void StartAudioHashForTesting();
// Returns the hash of all audio frames seen since construction.
std::string GetAudioHashForTesting();
~ClocklessAudioSink() override;
scoped_ptr<ClocklessAudioSinkThread> thread_;
bool initialized_;
bool playing_;
bool hashing_;
// Time taken in last set of Render() calls.
base::TimeDelta playback_time_;
} // namespace media