mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-15 00:24:19 +00:00
114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2017 - ROLI Ltd.
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
|
|
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
|
|
27th April 2017).
|
|
|
|
End User License Agreement: www.juce.com/juce-5-licence
|
|
Privacy Policy: www.juce.com/juce-5-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
|
|
#ifndef DOXYGEN
|
|
namespace ProcessorHelpers // Internal helper classes used in building the ProcessorChain
|
|
{
|
|
template <int arg>
|
|
struct GetterHelper
|
|
{
|
|
template <typename ProcessorType>
|
|
static auto& get (ProcessorType& a) noexcept { return GetterHelper<arg - 1>::get (a.processors); }
|
|
};
|
|
|
|
template <>
|
|
struct GetterHelper<0>
|
|
{
|
|
template <typename ProcessorType>
|
|
static auto& get (ProcessorType& a) noexcept { return a.getProcessor(); }
|
|
};
|
|
|
|
template <typename Processor, typename Subclass>
|
|
struct ChainBase
|
|
{
|
|
Processor processor;
|
|
|
|
Processor& getProcessor() noexcept { return processor; }
|
|
Subclass& getThis() noexcept { return *static_cast<Subclass*> (this); }
|
|
|
|
template <int arg> auto& get() noexcept { return GetterHelper<arg>::get (getThis()); }
|
|
};
|
|
|
|
template <typename FirstProcessor, typename... SubsequentProcessors>
|
|
struct Chain : public ChainBase<FirstProcessor, Chain<FirstProcessor, SubsequentProcessors...>>
|
|
{
|
|
using Base = ChainBase<FirstProcessor, Chain<FirstProcessor, SubsequentProcessors...>>;
|
|
|
|
void prepare (const ProcessSpec& spec)
|
|
{
|
|
Base::processor.prepare (spec);
|
|
processors.prepare (spec);
|
|
}
|
|
|
|
template <typename ProcessContext>
|
|
void process (ProcessContext& context) noexcept
|
|
{
|
|
Base::processor.process (context);
|
|
processors.process (context);
|
|
}
|
|
|
|
void reset()
|
|
{
|
|
Base::processor.reset();
|
|
processors.reset();
|
|
}
|
|
|
|
Chain<SubsequentProcessors...> processors;
|
|
};
|
|
|
|
template <typename ProcessorType>
|
|
struct Chain<ProcessorType> : public ChainBase<ProcessorType, Chain<ProcessorType>>
|
|
{
|
|
using Base = ChainBase<ProcessorType, Chain<ProcessorType>>;
|
|
|
|
template <typename ProcessContext>
|
|
void process (ProcessContext& context) noexcept
|
|
{
|
|
Base::processor.process (context);
|
|
}
|
|
|
|
void prepare (const ProcessSpec& spec)
|
|
{
|
|
Base::processor.prepare (spec);
|
|
}
|
|
|
|
void reset()
|
|
{
|
|
Base::processor.reset();
|
|
}
|
|
};
|
|
}
|
|
#endif
|
|
|
|
|
|
//==============================================================================
|
|
/**
|
|
This variadically-templated class lets you join together any number of processor
|
|
classes into a single processor which will call process() on them all in sequence.
|
|
*/
|
|
template <typename... Processors>
|
|
using ProcessorChain = ProcessorHelpers::Chain<Processors...>;
|