Source/WebCore/Modules/speech/SpeechRecognitionCaptureSource.cpp

/*
 * Copyright (C) 2020 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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#include "config.h"
#include "SpeechRecognitionCaptureSource.h"

#if ENABLE(MEDIA_STREAM)
#include "CaptureDeviceManager.h"
#include "RealtimeMediaSourceCenter.h"
#include "SpeechRecognitionUpdate.h"
#endif

namespace WebCore {

SpeechRecognitionCaptureSource::SpeechRecognitionCaptureSource(SpeechRecognitionConnectionClientIdentifier clientIdentifier, DataCallback&& dataCallback, StateUpdateCallback&& stateUpdateCallback)
{
#if ENABLE(MEDIA_STREAM)
    Optional<CaptureDevice> captureDevice;
    auto devices = RealtimeMediaSourceCenter::singleton().audioCaptureFactory().audioCaptureDeviceManager().captureDevices();
    for (auto device : devices) {
        if (!device.enabled())
            continue;

        if (!captureDevice)
            captureDevice = device;

        if (device.isDefault()) {
            captureDevice = device;
            break;
        }
    }

    if (!captureDevice) {
        auto error = SpeechRecognitionError { SpeechRecognitionErrorType::AudioCapture, "No device is available for capture" };
        stateUpdateCallback(SpeechRecognitionUpdate::createError(clientIdentifier, error));
        return;
    }

    auto result = RealtimeMediaSourceCenter::singleton().audioCaptureFactory().createAudioCaptureSource(*captureDevice, { }, { });
    if (!result) {
        auto error = SpeechRecognitionError { SpeechRecognitionErrorType::AudioCapture, result.errorMessage };
        stateUpdateCallback(SpeechRecognitionUpdate::createError(clientIdentifier, error));
        return;
    }

    m_impl = makeUnique<SpeechRecognitionCaptureSourceImpl>(clientIdentifier, WTFMove(dataCallback), WTFMove(stateUpdateCallback), result.source());
#else
    UNUSED_PARAM(clientIdentifier);
    UNUSED_PARAM(dataCallback);
    UNUSED_PARAM(stateUpdateCallback);
#endif
}

} // namespace WebCore