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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_AUDIO_AUDIO_NODE_OUTPUT_H_
#define COBALT_AUDIO_AUDIO_NODE_OUTPUT_H_
#include <set>
#include <vector>
#include "base/memory/ref_counted.h"
#include "cobalt/audio/audio_buffer.h"
#include "cobalt/audio/audio_helpers.h"
#if defined(COBALT_MEDIA_SOURCE_2016)
#include "cobalt/media/base/shell_audio_bus.h"
#else // defined(COBALT_MEDIA_SOURCE_2016)
#include "media/base/shell_audio_bus.h"
#endif // defined(COBALT_MEDIA_SOURCE_2016)
namespace cobalt {
namespace audio {
class AudioNode;
class AudioNodeInput;
// This represents the output coming out of the AudioNode.
// It may be connected to one or more AudioNodeInputs.
class AudioNodeOutput : public base::RefCountedThreadSafe<AudioNodeOutput> {
#if defined(COBALT_MEDIA_SOURCE_2016)
typedef media::ShellAudioBus ShellAudioBus;
#else // defined(COBALT_MEDIA_SOURCE_2016)
typedef ::media::ShellAudioBus ShellAudioBus;
#endif // defined(COBALT_MEDIA_SOURCE_2016)
public:
explicit AudioNodeOutput(AudioNode* owner_node) : owner_node_(owner_node) {}
~AudioNodeOutput();
void AddInput(AudioNodeInput* input);
void RemoveInput(AudioNodeInput* input);
void DisconnectAll();
scoped_ptr<ShellAudioBus> PassAudioBusFromSource(int32 number_of_frames,
SampleType sample_type);
private:
AudioNode* const owner_node_;
std::set<AudioNodeInput*> inputs_;
};
} // namespace audio
} // namespace cobalt
#endif // COBALT_AUDIO_AUDIO_NODE_OUTPUT_H_