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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,97 @@ | ||
| #pragma once | ||
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| #include <optional> | ||
| #include <functional> | ||
| #include <memory> | ||
| #include <algorithm> | ||
| #include <adm/adm.hpp> | ||
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| namespace adm { | ||
| namespace helpers { | ||
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| std::optional<adm::AudioBlockFormatDirectSpeakers const> static_ds_block(adm::AudioChannelFormat const& cf) { | ||
| using namespace adm; | ||
| if (cf.get<TypeDescriptor>() == TypeDefinition::DIRECT_SPEAKERS) { | ||
| auto blocks = cf.getElements<AudioBlockFormatDirectSpeakers>(); | ||
| if (blocks.size() == 1) { | ||
| return blocks.front(); | ||
| } | ||
| } | ||
| return {}; | ||
| } | ||
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| namespace equality { | ||
| using namespace adm; | ||
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| enum class CompareHasResult { Neither, Both, Mismatch }; | ||
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| template<typename Property, typename Parent> CompareHasResult compareHas(Parent const& lhs, Parent const& rhs) { | ||
| bool hasProp = lhs.template has<Property>(); | ||
| if (hasProp != rhs.template has<Property>()) | ||
| return CompareHasResult::Mismatch; | ||
| if (hasProp) | ||
| return CompareHasResult::Both; | ||
| return CompareHasResult::Neither; | ||
| } | ||
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| template<typename T> bool equals(T const& lhs, T const& rhs) { | ||
| return std::equal_to<T>{}(lhs, rhs); | ||
| } | ||
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| template<typename Property, typename Parent> bool propertyMatch(Parent const& lhs, Parent const& rhs) { | ||
| switch (compareHas<Property>(lhs, rhs)) { | ||
| case CompareHasResult::Mismatch: | ||
| return false; | ||
| case CompareHasResult::Neither: | ||
| return true; | ||
| case CompareHasResult::Both: | ||
| return equals(lhs.template get<Property>(), rhs.template get<Property>()); | ||
| default: | ||
| return false; // just to keep compiler warnings away | ||
| } | ||
| } | ||
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| template<typename... Properties, typename Parent> bool propertiesMatch(Parent const& lhs, Parent const& rhs) { | ||
| return (propertyMatch<Properties, Parent>(lhs, rhs) && ...); | ||
| } | ||
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| template<> bool equals(Gain const& lhs, Gain const& rhs) { | ||
| return lhs.get() == rhs.get(); | ||
| } | ||
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| template<> bool equals(SpeakerLabels const& lhs, SpeakerLabels const& rhs) { | ||
| return std::equal(lhs.begin(), lhs.end(), rhs.begin(), rhs.end()); | ||
| } | ||
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| template<> bool equals(HeadphoneVirtualise const& lhs, HeadphoneVirtualise const& rhs) { | ||
| return propertiesMatch<Bypass, DirectToReverberantRatio>(lhs, rhs); | ||
| } | ||
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| template<> bool equals(ScreenEdgeLock const& lhs, ScreenEdgeLock const& rhs) { | ||
| return propertiesMatch<HorizontalEdge, VerticalEdge>(lhs, rhs); | ||
| } | ||
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| template<> bool equals(SphericalSpeakerPosition const& lhs, SphericalSpeakerPosition const& rhs) { | ||
| return propertiesMatch<Azimuth, AzimuthMin, AzimuthMax, Elevation, ElevationMin, ElevationMax, Distance, DistanceMin, DistanceMax, ScreenEdgeLock>(lhs, rhs); | ||
| } | ||
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| template<> bool equals(CartesianSpeakerPosition const& lhs, CartesianSpeakerPosition const& rhs) { | ||
| return propertiesMatch<X, XMin, XMax, Y, YMin, YMax, Z, ZMin, ZMax, ScreenEdgeLock>(lhs, rhs); | ||
| } | ||
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| bool isEquivalentByProperties(std::shared_ptr<const adm::AudioChannelFormat> cfA, std::shared_ptr<const adm::AudioChannelFormat> cfB) { | ||
| if (compareHas<TypeDescriptor>(*cfA, *cfB) != CompareHasResult::Both) { | ||
| return false; | ||
| } | ||
| // TODO: only support matching up DS AudioChannelFormats for now | ||
| auto bfA = adm::helpers::static_ds_block(*cfA); | ||
| auto bfB = adm::helpers::static_ds_block(*cfB); | ||
| if(bfA && bfB) { | ||
| return propertiesMatch<SpeakerLabels, Importance, HeadLocked, Gain, HeadphoneVirtualise, SphericalSpeakerPosition, CartesianSpeakerPosition>(*bfA, *bfB); | ||
| } | ||
| return false; | ||
| } | ||
| } | ||
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| } | ||
| } |
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