| /* |
| * 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 "MIMETypeCache.h" |
| |
| #include "ContentType.h" |
| |
| namespace WebCore { |
| |
| HashSet<String, ASCIICaseInsensitiveHash>& MIMETypeCache::supportedTypes() |
| { |
| if (!m_supportedTypes) { |
| m_supportedTypes = HashSet<String, ASCIICaseInsensitiveHash> { }; |
| initializeCache(*m_supportedTypes); |
| } |
| |
| return *m_supportedTypes; |
| } |
| |
| bool MIMETypeCache::supportsContainerType(const String& containerType) |
| { |
| if (!isAvailable() || containerType.isEmpty()) |
| return false; |
| |
| if (isUnsupportedContainerType(containerType)) |
| return false; |
| |
| if (staticContainerTypeList().contains(containerType)) |
| return true; |
| |
| return supportedTypes().contains(containerType); |
| } |
| |
| MediaPlayerEnums::SupportsType MIMETypeCache::canDecodeType(const String& mimeType) |
| { |
| if (mimeType.isEmpty()) |
| return MediaPlayerEnums::SupportsType::IsNotSupported; |
| |
| if (m_cachedResults) { |
| auto it = m_cachedResults->find(mimeType); |
| if (it != m_cachedResults->end()) |
| return it->value; |
| } |
| |
| auto result = MediaPlayerEnums::SupportsType::IsNotSupported; |
| do { |
| if (!isAvailable() || mimeType.isEmpty()) |
| break; |
| |
| auto contentType = ContentType { mimeType }; |
| auto containerType = contentType.containerType(); |
| if (!supportsContainerType(containerType)) |
| break; |
| |
| result = MediaPlayerEnums::SupportsType::MayBeSupported; |
| if (contentType.codecs().isEmpty()) |
| break; |
| |
| if (canDecodeExtendedType(contentType)) |
| result = MediaPlayerEnums::SupportsType::IsSupported; |
| } while (0); |
| |
| if (!m_cachedResults) |
| m_cachedResults = HashMap<String, MediaPlayerEnums::SupportsType, ASCIICaseInsensitiveHash>(); |
| m_cachedResults->add(mimeType, result); |
| |
| return result; |
| } |
| |
| void MIMETypeCache::addSupportedTypes(const Vector<String>& newTypes) |
| { |
| if (!m_supportedTypes) |
| m_supportedTypes = HashSet<String, ASCIICaseInsensitiveHash> { }; |
| |
| for (auto& type : newTypes) |
| m_supportedTypes->add(type); |
| } |
| |
| const HashSet<String, ASCIICaseInsensitiveHash>& MIMETypeCache::staticContainerTypeList() |
| { |
| static const auto cache = makeNeverDestroyed(HashSet<String, ASCIICaseInsensitiveHash> { }); |
| return cache; |
| } |
| |
| bool MIMETypeCache::isUnsupportedContainerType(const String&) |
| { |
| return false; |
| } |
| |
| bool MIMETypeCache::isAvailable() const |
| { |
| return true; |
| } |
| |
| bool MIMETypeCache::isEmpty() const |
| { |
| return m_supportedTypes && m_supportedTypes->isEmpty(); |
| } |
| |
| void MIMETypeCache::initializeCache(HashSet<String, ASCIICaseInsensitiveHash>&) |
| { |
| } |
| |
| bool MIMETypeCache::canDecodeExtendedType(const ContentType&) |
| { |
| return false; |
| } |
| |
| } |
| |