| /* |
| * Copyright (C) 2019 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. ``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 |
| * 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 CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "BaseAudioSharedUnit.h" |
| |
| #if ENABLE(MEDIA_STREAM) |
| |
| #include "AudioSession.h" |
| #include "CoreAudioCaptureSource.h" |
| #include "Logging.h" |
| #include "PlatformMediaSessionManager.h" |
| |
| namespace WebCore { |
| |
| void BaseAudioSharedUnit::addClient(CoreAudioCaptureSource& client) |
| { |
| auto locker = holdLock(m_clientsLock); |
| m_clients.add(&client); |
| } |
| |
| void BaseAudioSharedUnit::removeClient(CoreAudioCaptureSource& client) |
| { |
| auto locker = holdLock(m_clientsLock); |
| m_clients.remove(&client); |
| } |
| |
| void BaseAudioSharedUnit::forEachClient(const Function<void(CoreAudioCaptureSource&)>& apply) const |
| { |
| Vector<CoreAudioCaptureSource*> clientsCopy; |
| { |
| auto locker = holdLock(m_clientsLock); |
| clientsCopy = copyToVector(m_clients); |
| } |
| for (auto* client : clientsCopy) { |
| auto locker = holdLock(m_clientsLock); |
| // Make sure the client has not been destroyed. |
| if (!m_clients.contains(client)) |
| continue; |
| apply(*client); |
| } |
| } |
| |
| void BaseAudioSharedUnit::clearClients() |
| { |
| auto locker = holdLock(m_clientsLock); |
| m_clients.clear(); |
| } |
| |
| void BaseAudioSharedUnit::startProducingData() |
| { |
| ASSERT(isMainThread()); |
| |
| if (++m_producingCount != 1) |
| return; |
| |
| if (isProducingData()) |
| return; |
| |
| if (m_suspended) { |
| RELEASE_LOG_INFO(WebRTC, "BaseAudioSharedUnit::startProducingData - exiting early as suspended"); |
| return; |
| } |
| |
| if (hasAudioUnit()) { |
| cleanupAudioUnit(); |
| ASSERT(!hasAudioUnit()); |
| } |
| startUnit(); |
| } |
| |
| OSStatus BaseAudioSharedUnit::startUnit() |
| { |
| #if PLATFORM(IOS_FAMILY) |
| if (!m_disableAudioSessionCheck) { |
| PlatformMediaSessionManager::sharedManager().sessionCanProduceAudioChanged(); |
| ASSERT(AudioSession::sharedSession().category() == AudioSession::PlayAndRecord); |
| } |
| #endif |
| |
| if (auto error = startInternal()) { |
| captureFailed(); |
| return error; |
| } |
| return 0; |
| } |
| |
| void BaseAudioSharedUnit::prepareForNewCapture() |
| { |
| if (!m_suspended) |
| return; |
| m_suspended = false; |
| |
| if (!m_producingCount) |
| return; |
| |
| RELEASE_LOG_ERROR(WebRTC, "CoreAudioSharedUnit::prepareForNewCapture, notifying suspended sources of capture failure"); |
| captureFailed(); |
| } |
| |
| void BaseAudioSharedUnit::captureFailed() |
| { |
| RELEASE_LOG_ERROR(WebRTC, "CoreAudioSharedUnit::captureFailed - capture failed"); |
| forEachClient([](auto& client) { |
| client.captureFailed(); |
| }); |
| |
| m_producingCount = 0; |
| |
| clearClients(); |
| |
| stopInternal(); |
| cleanupAudioUnit(); |
| } |
| |
| void BaseAudioSharedUnit::stopProducingData() |
| { |
| ASSERT(isMainThread()); |
| ASSERT(m_producingCount); |
| |
| if (m_producingCount && --m_producingCount) |
| return; |
| |
| stopInternal(); |
| cleanupAudioUnit(); |
| } |
| |
| void BaseAudioSharedUnit::reconfigure() |
| { |
| ASSERT(isMainThread()); |
| if (m_suspended) { |
| m_needsReconfiguration = true; |
| return; |
| } |
| reconfigureAudioUnit(); |
| } |
| |
| OSStatus BaseAudioSharedUnit::resume() |
| { |
| ASSERT(isMainThread()); |
| ASSERT(m_suspended); |
| ASSERT(!isProducingData()); |
| |
| RELEASE_LOG_INFO(WebRTC, "BaseAudioSharedUnit::resume"); |
| |
| m_suspended = false; |
| |
| if (m_needsReconfiguration) { |
| m_needsReconfiguration = false; |
| reconfigure(); |
| } |
| |
| if (!hasAudioUnit()) |
| return 0; |
| |
| if (m_producingCount) { |
| if (auto error = startUnit()) |
| return error; |
| } |
| |
| forEachClient([](auto& client) { |
| client.notifyMutedChange(false); |
| }); |
| |
| return 0; |
| } |
| |
| OSStatus BaseAudioSharedUnit::suspend() |
| { |
| ASSERT(isMainThread()); |
| |
| RELEASE_LOG_INFO(WebRTC, "BaseAudioSharedUnit::suspend"); |
| |
| m_suspended = true; |
| stopInternal(); |
| |
| forEachClient([](auto& client) { |
| client.notifyMutedChange(true); |
| }); |
| |
| return 0; |
| } |
| |
| void BaseAudioSharedUnit::audioSamplesAvailable(const MediaTime& time, const PlatformAudioData& data, const AudioStreamDescription& description, size_t numberOfFrames) |
| { |
| forEachClient([&](auto& client) { |
| if (client.isProducingData()) |
| client.audioSamplesAvailable(time, data, description, numberOfFrames); |
| }); |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(MEDIA_STREAM) |