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// Copyright 2016 The Cobalt Authors. 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_SPEECH_MICROPHONE_FAKE_H_
#define COBALT_SPEECH_MICROPHONE_FAKE_H_
#include "cobalt/speech/speech_configuration.h"
#if defined(ENABLE_FAKE_MICROPHONE)
#include <memory>
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_path.h"
#include "base/threading/thread_checker.h"
#include "cobalt/audio/audio_helpers.h"
#include "cobalt/speech/microphone.h"
namespace cobalt {
namespace speech {
// Fake microphone to mock the speech input by reading from the pre-recorded
// audio.
class MicrophoneFake : public Microphone {
public:
explicit MicrophoneFake(const Options& options);
~MicrophoneFake() override {}
bool Open() override;
int Read(char* out_data, int data_size) override;
bool Close() override;
int MinMicrophoneReadInBytes() override;
bool IsValid() override { return is_valid_; }
const char* Label() override;
private:
THREAD_CHECKER(thread_checker_);
bool read_data_from_file_;
std::vector<base::FilePath> file_paths_;
std::unique_ptr<audio::ShellAudioBus> audio_bus_;
int file_length_;
int read_index_;
bool is_valid_;
};
} // namespace speech
} // namespace cobalt
#endif // defined(ENABLE_FAKE_MICROPHONE)
#endif // COBALT_SPEECH_MICROPHONE_FAKE_H_