/* * Copyright (C) 2017 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 * 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 "SharedRingBufferStorage.h" #if USE(MEDIATOOLBOX) namespace WebKit { void SharedRingBufferStorage::setStorage(RefPtr<SharedMemory>&& storage) { ASSERT(storage || !m_readOnly); m_storage = WTFMove(storage); if (m_client) m_client->storageChanged(m_storage.get()); } void SharedRingBufferStorage::setReadOnly(bool readOnly) { ASSERT(m_storage || !readOnly); m_readOnly = readOnly; } void SharedRingBufferStorage::allocate(size_t byteCount) { if (!m_readOnly) setStorage(SharedMemory::allocate(byteCount)); } void SharedRingBufferStorage::deallocate() { if (!m_readOnly) setStorage(nullptr); } void* SharedRingBufferStorage::data() { return m_storage ? m_storage->data() : nullptr; } } #endif