audio_output_resampler.h | Explore in Territory

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_AUDIO_AUDIO_OUTPUT_RESAMPLER_H_
#define MEDIA_AUDIO_AUDIO_OUTPUT_RESAMPLER_H_

#include "base/containers/flat_map.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "media/audio/audio_debug_recording_helper.h"
#include "media/audio/audio_io.h"
#include "media/audio/audio_output_dispatcher.h"
#include "media/base/audio_parameters.h"

namespace media {

class AudioManager;
class AudioOutputDispatcherImpl;
class OnMoreDataConverter;

// AudioOutputResampler is a browser-side resampling and buffering solution
// which ensures audio data is always output at given parameters.  See the
// AudioConverter class for details on the conversion process.
//
// AOR works by intercepting the AudioSourceCallback provided to StartStream()
// and redirecting it through an AudioConverter instance.
//
// AOR will automatically fall back from AUDIO_PCM_LOW_LATENCY to
// AUDIO_PCM_LINEAR if the output device fails to open at the requested output
// parameters. If opening still fails, it will fallback to AUDIO_FAKE.
class MEDIA_EXPORT AudioOutputResampler : public AudioOutputDispatcher { … };

}  // namespace media

#endif  // MEDIA_AUDIO_AUDIO_OUTPUT_RESAMPLER_H_
chromium/media/audio/audio_output_resampler.h
