Source/WebKit/WebProcess/cocoa/UserMediaCaptureManager.cpp

/*
 * Copyright (C) 2017-2018 Apple Inc. All rights reserved.
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 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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#include "config.h"
#include "UserMediaCaptureManager.h"

#if PLATFORM(COCOA) && ENABLE(MEDIA_STREAM)

#include "AudioMediaStreamTrackRendererInternalUnitManager.h"
#include "GPUProcessConnection.h"
#include "RemoteRealtimeAudioSource.h"
#include "RemoteRealtimeVideoSource.h"
#include "UserMediaCaptureManagerMessages.h"
#include "WebCoreArgumentCoders.h"
#include "WebProcess.h"
#include <WebCore/AudioMediaStreamTrackRendererUnit.h>
#include <WebCore/DeprecatedGlobalSettings.h>
#include <WebCore/MockRealtimeMediaSourceCenter.h>
#include <WebCore/RealtimeMediaSourceCenter.h>
#include <WebCore/RealtimeVideoSource.h>
#include <wtf/Assertions.h>

namespace WebKit {
using namespace PAL;
using namespace WebCore;

UserMediaCaptureManager::UserMediaCaptureManager(WebProcess& process)
    : m_process(process)
    , m_audioFactory(*this)
    , m_videoFactory(*this)
    , m_displayFactory(*this)
{
    m_process.addMessageReceiver(Messages::UserMediaCaptureManager::messageReceiverName(), *this);
}

UserMediaCaptureManager::~UserMediaCaptureManager()
{
    RealtimeMediaSourceCenter::singleton().unsetAudioCaptureFactory(m_audioFactory);
    RealtimeMediaSourceCenter::singleton().unsetDisplayCaptureFactory(m_displayFactory);
    RealtimeMediaSourceCenter::singleton().unsetVideoCaptureFactory(m_videoFactory);
    m_process.removeMessageReceiver(Messages::UserMediaCaptureManager::messageReceiverName());
    m_remoteCaptureSampleManager.stopListeningForIPC();
}

const char* UserMediaCaptureManager::supplementName()
{
    return "UserMediaCaptureManager";
}

void UserMediaCaptureManager::setupCaptureProcesses(bool shouldCaptureAudioInUIProcess, bool shouldCaptureAudioInGPUProcess, bool shouldCaptureVideoInUIProcess, bool shouldCaptureVideoInGPUProcess, bool shouldCaptureDisplayInUIProcess)
{
    MockRealtimeMediaSourceCenter::singleton().setMockAudioCaptureEnabled(!shouldCaptureAudioInUIProcess && !shouldCaptureAudioInGPUProcess);
    MockRealtimeMediaSourceCenter::singleton().setMockVideoCaptureEnabled(!shouldCaptureVideoInUIProcess && !shouldCaptureVideoInGPUProcess);
    MockRealtimeMediaSourceCenter::singleton().setMockDisplayCaptureEnabled(!shouldCaptureDisplayInUIProcess);

    m_audioFactory.setShouldCaptureInGPUProcess(shouldCaptureAudioInGPUProcess);
    m_videoFactory.setShouldCaptureInGPUProcess(shouldCaptureVideoInGPUProcess);

    if (shouldCaptureAudioInGPUProcess) {
        WebCore::AudioMediaStreamTrackRendererUnit::setCreateInternalUnitFunction([](auto&& renderCallback) {
            return WebProcess::singleton().audioMediaStreamTrackRendererInternalUnitManager().createRemoteInternalUnit(WTFMove(renderCallback));
        });
    }

    if (shouldCaptureAudioInUIProcess || shouldCaptureAudioInGPUProcess)
        RealtimeMediaSourceCenter::singleton().setAudioCaptureFactory(m_audioFactory);
    if (shouldCaptureVideoInUIProcess || shouldCaptureVideoInGPUProcess)
        RealtimeMediaSourceCenter::singleton().setVideoCaptureFactory(m_videoFactory);
    if (shouldCaptureDisplayInUIProcess)
        RealtimeMediaSourceCenter::singleton().setDisplayCaptureFactory(m_displayFactory);
}

void UserMediaCaptureManager::addAudioSource(Ref<RemoteRealtimeAudioSource>&& source)
{
    auto identifier = source->identifier();
    ASSERT(!m_audioSources.contains(identifier));
    m_audioSources.add(identifier, WTFMove(source));
}

void UserMediaCaptureManager::removeAudioSource(RealtimeMediaSourceIdentifier identifier)
{
    ASSERT(m_audioSources.contains(identifier));
    m_audioSources.remove(identifier);
}

void UserMediaCaptureManager::addVideoSource(Ref<RemoteRealtimeVideoSource>&& source)
{
    auto identifier = source->identifier();
    ASSERT(!m_videoSources.contains(identifier));
    m_videoSources.add(identifier, WTFMove(source));
}

void UserMediaCaptureManager::removeVideoSource(RealtimeMediaSourceIdentifier identifier)
{
    ASSERT(m_videoSources.contains(identifier));
    m_videoSources.remove(identifier);
}

void UserMediaCaptureManager::sourceStopped(RealtimeMediaSourceIdentifier identifier)
{
    if (auto source = m_audioSources.get(identifier))
        source->captureStopped();
    else if (auto source = m_videoSources.get(identifier))
        source->captureStopped();
}

void UserMediaCaptureManager::captureFailed(RealtimeMediaSourceIdentifier id)
{
    if (auto source = m_audioSources.get(id))
        source->captureFailed();
    else if (auto source = m_videoSources.get(id))
        source->captureFailed();
}

void UserMediaCaptureManager::sourceMutedChanged(RealtimeMediaSourceIdentifier id, bool muted)
{
    if (auto source = m_audioSources.get(id))
        source->sourceMutedChanged(muted);
    else if (auto source = m_videoSources.get(id))
        source->sourceMutedChanged(muted);
}

void UserMediaCaptureManager::sourceSettingsChanged(RealtimeMediaSourceIdentifier id, RealtimeMediaSourceSettings&& settings)
{
    if (auto source = m_audioSources.get(id))
        source->setSettings(WTFMove(settings));
    else if (auto source = m_videoSources.get(id))
        source->setSettings(WTFMove(settings));
}

void UserMediaCaptureManager::applyConstraintsSucceeded(RealtimeMediaSourceIdentifier id, RealtimeMediaSourceSettings&& settings)
{
    if (auto source = m_audioSources.get(id))
        source->applyConstraintsSucceeded(WTFMove(settings));
}

void UserMediaCaptureManager::applyConstraintsFailed(RealtimeMediaSourceIdentifier id, String&& failedConstraint, String&& message)
{
    if (auto source = m_audioSources.get(id))
        source->applyConstraintsFailed(WTFMove(failedConstraint), WTFMove(message));
}

CaptureSourceOrError UserMediaCaptureManager::AudioFactory::createAudioCaptureSource(const CaptureDevice& device, String&& hashSalt, const MediaConstraints* constraints)
{
#if !ENABLE(GPU_PROCESS)
    if (m_shouldCaptureInGPUProcess)
        return CaptureSourceOrError { "Audio capture in GPUProcess is not implemented"_s };
#endif

#if PLATFORM(IOS_FAMILY) || ENABLE(ROUTING_ARBITRATION)
    // FIXME: Remove disabling of the audio session category management once we move all media playing to GPUProcess.
    if (m_shouldCaptureInGPUProcess)
        DeprecatedGlobalSettings::setShouldManageAudioSessionCategory(true);
#endif

    return RemoteRealtimeAudioSource::create(device, constraints, { }, WTFMove(hashSalt), m_manager, m_shouldCaptureInGPUProcess);
}

void UserMediaCaptureManager::AudioFactory::setShouldCaptureInGPUProcess(bool value)
{
    m_shouldCaptureInGPUProcess = value;
}

CaptureSourceOrError UserMediaCaptureManager::VideoFactory::createVideoCaptureSource(const CaptureDevice& device, String&& hashSalt, const MediaConstraints* constraints)
{
#if !ENABLE(GPU_PROCESS)
    if (m_shouldCaptureInGPUProcess)
        return CaptureSourceOrError { "Video capture in GPUProcess is not implemented"_s };
#endif

    return CaptureSourceOrError(RealtimeVideoSource::create(RemoteRealtimeVideoSource::create(device, constraints, { }, WTFMove(hashSalt), m_manager, m_shouldCaptureInGPUProcess)));
}

CaptureSourceOrError UserMediaCaptureManager::DisplayFactory::createDisplayCaptureSource(const CaptureDevice& device, const MediaConstraints* constraints)
{
    return CaptureSourceOrError(RealtimeVideoSource::create(RemoteRealtimeVideoSource::create(device, constraints, { }, { }, m_manager, false)));
}

}

#endif