| /* |
| * 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. |
| */ |
| |
| #import "config.h" |
| #import "AVAssetTrackUtilities.h" |
| |
| #if ENABLE(VIDEO) && USE(AVFOUNDATION) |
| |
| #import "FourCC.h" |
| #import <AVFoundation/AVAssetTrack.h> |
| #import <pal/spi/cocoa/IOPSLibSPI.h> |
| |
| #import <pal/cf/CoreMediaSoftLink.h> |
| #import "VideoToolboxSoftLink.h" |
| |
| namespace WebCore { |
| |
| static bool systemHasBattery() |
| { |
| RetainPtr<CFTypeRef> powerSourcesInfo = adoptCF(IOPSCopyPowerSourcesInfo()); |
| if (!powerSourcesInfo) |
| return false; |
| RetainPtr<CFArrayRef> powerSourcesList = adoptCF(IOPSCopyPowerSourcesList(powerSourcesInfo.get())); |
| if (!powerSourcesList) |
| return false; |
| for (CFIndex i = 0, count = CFArrayGetCount(powerSourcesList.get()); i < count; ++i) { |
| CFDictionaryRef description = IOPSGetPowerSourceDescription(powerSourcesInfo.get(), CFArrayGetValueAtIndex(powerSourcesList.get(), i)); |
| CFTypeRef value = CFDictionaryGetValue(description, CFSTR(kIOPSTypeKey)); |
| if (!value || CFEqual(value, CFSTR(kIOPSInternalBatteryType))) |
| return true; |
| } |
| return false; |
| } |
| |
| static Vector<FourCC> contentTypesToCodecs(const Vector<ContentType>& contentTypes) |
| { |
| Vector<FourCC> codecs; |
| for (auto& contentType : contentTypes) { |
| auto codecStrings = contentType.codecs(); |
| for (auto& codecString : codecStrings) { |
| // https://tools.ietf.org/html/rfc6381 |
| // Within a 'codecs' parameter value, "." is reserved as a hierarchy delimiter |
| auto firstPeriod = codecString.find('.'); |
| if (firstPeriod != notFound) |
| codecString.truncate(firstPeriod); |
| |
| auto codecIdentifier = FourCC::fromString(codecString.left(4)); |
| if (codecIdentifier) |
| codecs.append(codecIdentifier.value()); |
| } |
| } |
| return codecs; |
| } |
| |
| bool codecsMeetHardwareDecodeRequirements(const Vector<FourCC>& codecs, const Vector<ContentType>& contentTypesRequiringHardwareDecode) |
| { |
| static bool hasBattery = systemHasBattery(); |
| |
| // If the system is exclusively wall-powered, do not require hardware support. |
| if (!hasBattery) |
| return true; |
| |
| // If we can't determine whether a codec has hardware support or not, default to true. |
| if (!canLoad_VideoToolbox_VTIsHardwareDecodeSupported()) |
| return true; |
| |
| if (contentTypesRequiringHardwareDecode.isEmpty()) |
| return true; |
| |
| Vector<FourCC> hardwareCodecs = contentTypesToCodecs(contentTypesRequiringHardwareDecode); |
| |
| for (auto& codec : codecs) { |
| if (hardwareCodecs.contains(codec) && !VTIsHardwareDecodeSupported(codec.value)) |
| return false; |
| } |
| return true; |
| } |
| |
| bool contentTypeMeetsHardwareDecodeRequirements(const ContentType& contentType, const Vector<ContentType>& contentTypesRequiringHardwareDecode) |
| { |
| Vector<FourCC> codecs = contentTypesToCodecs({ contentType }); |
| return codecsMeetHardwareDecodeRequirements(codecs, contentTypesRequiringHardwareDecode); |
| } |
| |
| bool assetTrackMeetsHardwareDecodeRequirements(AVAssetTrack *track, const Vector<ContentType>& contentTypesRequiringHardwareDecode) |
| { |
| Vector<FourCC> codecs; |
| for (NSUInteger i = 0, count = track.formatDescriptions.count; i < count; ++i) { |
| CMFormatDescriptionRef description = (__bridge CMFormatDescriptionRef)track.formatDescriptions[i]; |
| if (PAL::CMFormatDescriptionGetMediaType(description) == kCMMediaType_Video) |
| codecs.append(FourCC(PAL::CMFormatDescriptionGetMediaSubType(description))); |
| } |
| return codecsMeetHardwareDecodeRequirements(codecs, contentTypesRequiringHardwareDecode); |
| } |
| |
| |
| } |
| |
| #endif |