juce_AudioBlock.h

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/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   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 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-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.
 
  ==============================================================================
*/
 
namespace juce
{
namespace dsp
{
 
#ifndef DOXYGEN
namespace SampleTypeHelpers // Internal classes needed for handling sample type classes
{
    template <typename T, bool = std::is_floating_point<T>::value>
    struct ElementType
    {
        using Type = T;
    };
 
    template <typename T>
    struct ElementType<const T, false>
    {
        using Type = const typename T::value_type;
    };
 
    template <typename T>
    struct ElementType<T, false>
    {
        using Type = typename T::value_type;
    };
}
#endif
 
//==============================================================================
template <typename SampleType>
class AudioBlock
{
private:
    template <typename OtherSampleType>
    using MayUseConvertingConstructor =
        std::enable_if_t<std::is_same<std::remove_const_t<SampleType>,
                                      std::remove_const_t<OtherSampleType>>::value
                             && std::is_const<SampleType>::value
                             && ! std::is_const<OtherSampleType>::value,
                         int>;
 
public:
    //==============================================================================
    using NumericType = typename SampleTypeHelpers::ElementType<SampleType>::Type;
 
    //==============================================================================
    AudioBlock() noexcept = default;

    constexpr AudioBlock (SampleType* const* channelData,
                          size_t numberOfChannels, size_t numberOfSamples) noexcept
        : channels (channelData),
          numChannels (static_cast<ChannelCountType> (numberOfChannels)),
          numSamples (numberOfSamples)
    {
    }

    constexpr AudioBlock (SampleType* const* channelData, size_t numberOfChannels,
                          size_t startSampleIndex, size_t numberOfSamples) noexcept
        : channels (channelData),
          numChannels (static_cast<ChannelCountType> (numberOfChannels)),
          startSample (startSampleIndex),
          numSamples (numberOfSamples)
    {
    }

    AudioBlock (HeapBlock<char>& heapBlockToUseForAllocation,
                size_t numberOfChannels, size_t numberOfSamples,
                size_t alignmentInBytes = defaultAlignment) noexcept
        : numChannels (static_cast<ChannelCountType> (numberOfChannels)),
          numSamples (numberOfSamples)
    {
        auto roundedUpNumSamples = (numberOfSamples + elementMask) & ~elementMask;
        auto channelSize = sizeof (SampleType) * roundedUpNumSamples;
        auto channelListBytes = sizeof (SampleType*) * numberOfChannels;
        auto extraBytes = alignmentInBytes - 1;
 
        heapBlockToUseForAllocation.malloc (channelListBytes + extraBytes + channelSize * numberOfChannels);
 
        auto* chanArray = unalignedPointerCast<SampleType**> (heapBlockToUseForAllocation.getData());
        channels = chanArray;
 
        auto* data = unalignedPointerCast<SampleType*> (addBytesToPointer (chanArray, channelListBytes));
        data = snapPointerToAlignment (data, alignmentInBytes);
 
        for (ChannelCountType i = 0; i < numChannels; ++i)
        {
            chanArray[i] = data;
            data += roundedUpNumSamples;
        }
    }

    template <typename OtherSampleType>
    constexpr AudioBlock (AudioBuffer<OtherSampleType>& buffer) noexcept
        : channels (buffer.getArrayOfWritePointers()),
          numChannels (static_cast<ChannelCountType> (buffer.getNumChannels())),
          numSamples (static_cast<size_t> (buffer.getNumSamples()))
    {
    }

    template <typename OtherSampleType>
    constexpr AudioBlock (const AudioBuffer<OtherSampleType>& buffer) noexcept
        : channels (buffer.getArrayOfReadPointers()),
          numChannels (static_cast<ChannelCountType> (buffer.getNumChannels())),
          numSamples (static_cast<size_t> (buffer.getNumSamples()))
    {
    }

    template <typename OtherSampleType>
    AudioBlock (AudioBuffer<OtherSampleType>& buffer, size_t startSampleIndex) noexcept
        : channels (buffer.getArrayOfWritePointers()),
          numChannels (static_cast<ChannelCountType> (buffer.getNumChannels())),
          startSample (startSampleIndex),
          numSamples (static_cast<size_t> (buffer.getNumSamples()) - startSampleIndex)
    {
        jassert (startSample < static_cast<size_t> (buffer.getNumSamples()));
    }
 
    AudioBlock (const AudioBlock& other) noexcept = default;
    AudioBlock& operator= (const AudioBlock& other) noexcept = default;
 
    template <typename OtherSampleType, MayUseConvertingConstructor<OtherSampleType> = 0>
    AudioBlock (const AudioBlock<OtherSampleType>& other) noexcept
        : channels { other.channels },
          numChannels { other.numChannels },
          startSample { other.startSample },
          numSamples { other.numSamples }
    {
    }
 
    template <typename OtherSampleType, MayUseConvertingConstructor<OtherSampleType> = 0>
    AudioBlock& operator= (const AudioBlock<OtherSampleType>& other) noexcept
    {
        AudioBlock blockCopy { other };
        swap (blockCopy);
        return *this;
    }
 
    void swap (AudioBlock& other) noexcept
    {
        std::swap (other.channels, channels);
        std::swap (other.numChannels, numChannels);
        std::swap (other.startSample, startSample);
        std::swap (other.numSamples, numSamples);
    }
 
    //==============================================================================
    template <typename OtherSampleType>
    constexpr bool operator== (const AudioBlock<OtherSampleType>& other) const noexcept
    {
        return std::equal (channels,
                           channels + numChannels,
                           other.channels,
                           other.channels + other.numChannels)
               && startSample == other.startSample
               && numSamples == other.numSamples;
    }
 
    template <typename OtherSampleType>
    constexpr bool operator!= (const AudioBlock<OtherSampleType>& other) const noexcept
    {
        return ! (*this == other);
    }
 
    //==============================================================================
    constexpr size_t getNumChannels() const noexcept          { return static_cast<size_t> (numChannels); }

    constexpr size_t getNumSamples()  const noexcept          { return numSamples; }

    SampleType* getChannelPointer (size_t channel) const noexcept
    {
        jassert (channel < numChannels);
        jassert (numSamples > 0);
        return channels[channel] + startSample;
    }

    AudioBlock getSingleChannelBlock (size_t channel) const noexcept
    {
        jassert (channel < numChannels);
        return AudioBlock (channels + channel, 1, startSample, numSamples);
    }

    AudioBlock getSubsetChannelBlock (size_t channelStart, size_t numChannelsToUse) const noexcept
    {
        jassert (channelStart < numChannels);
        jassert ((channelStart + numChannelsToUse) <= numChannels);
 
        return AudioBlock (channels + channelStart, numChannelsToUse, startSample, numSamples);
    }

    SampleType getSample (int channel, int sampleIndex) const noexcept
    {
        jassert (isPositiveAndBelow (channel, numChannels));
        jassert (isPositiveAndBelow (sampleIndex, numSamples));
        return channels[channel][(size_t) startSample + (size_t) sampleIndex];
    }

    void setSample (int destChannel, int destSample, SampleType newValue) const noexcept
    {
        jassert (isPositiveAndBelow (destChannel, numChannels));
        jassert (isPositiveAndBelow (destSample, numSamples));
        channels[destChannel][(size_t) startSample + (size_t) destSample] = newValue;
    }

    void addSample (int destChannel, int destSample, SampleType valueToAdd) const noexcept
    {
        jassert (isPositiveAndBelow (destChannel, numChannels));
        jassert (isPositiveAndBelow (destSample, numSamples));
        channels[destChannel][(size_t) startSample + (size_t) destSample] += valueToAdd;
    }
 
    //==============================================================================
    AudioBlock&       clear()       noexcept   { clearInternal(); return *this; }
    const AudioBlock& clear() const noexcept   { clearInternal(); return *this; }

    AudioBlock&       JUCE_VECTOR_CALLTYPE fill (NumericType value)       noexcept   { fillInternal (value); return *this; }
    const AudioBlock& JUCE_VECTOR_CALLTYPE fill (NumericType value) const noexcept   { fillInternal (value); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       copyFrom (const AudioBlock<OtherSampleType>& src)       noexcept   { copyFromInternal (src); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& copyFrom (const AudioBlock<OtherSampleType>& src) const noexcept   { copyFromInternal (src); return *this; }

    template <typename OtherNumericType>
    AudioBlock&       copyFrom (const AudioBuffer<OtherNumericType>& src,
                                size_t srcPos = 0, size_t dstPos = 0,
                                size_t numElements = std::numeric_limits<size_t>::max())         { copyFromInternal (src, srcPos, dstPos, numElements); return *this; }
    template <typename OtherNumericType>
    const AudioBlock& copyFrom (const AudioBuffer<OtherNumericType>& src,
                                size_t srcPos = 0, size_t dstPos = 0,
                                size_t numElements = std::numeric_limits<size_t>::max()) const   { copyFromInternal (src, srcPos, dstPos, numElements); return *this; }
 

    void copyTo (AudioBuffer<typename std::remove_const<NumericType>::type>& dst, size_t srcPos = 0, size_t dstPos = 0,
                 size_t numElements = std::numeric_limits<size_t>::max()) const
    {
        auto dstlen = static_cast<size_t> (dst.getNumSamples()) / sizeFactor;
        auto n = jmin (numSamples - srcPos, dstlen - dstPos, numElements) * sizeFactor;
        auto maxChannels = jmin (static_cast<size_t> (dst.getNumChannels()), static_cast<size_t> (numChannels));
 
        for (size_t ch = 0; ch < maxChannels; ++ch)
            FloatVectorOperations::copy (dst.getWritePointer ((int) ch, (int) (dstPos * sizeFactor)),
                                         getDataPointer (ch) + (srcPos * sizeFactor),
                                         n);
    }

    AudioBlock&       move (size_t srcPos, size_t dstPos,
                            size_t numElements = std::numeric_limits<size_t>::max())       noexcept   { moveInternal (srcPos, dstPos, numElements); return *this; }
    const AudioBlock& move (size_t srcPos, size_t dstPos,
                            size_t numElements = std::numeric_limits<size_t>::max()) const noexcept   { moveInternal (srcPos, dstPos, numElements); return *this; }
 
    //==============================================================================
    AudioBlock getSubBlock (size_t newOffset, size_t newLength) const noexcept
    {
        jassert (newOffset < numSamples);
        jassert (newOffset + newLength <= numSamples);
 
        return AudioBlock (channels, numChannels, startSample + newOffset, newLength);
    }

    AudioBlock getSubBlock (size_t newOffset) const noexcept
    {
        return getSubBlock (newOffset, getNumSamples() - newOffset);
    }
 
    //==============================================================================
    AudioBlock&       JUCE_VECTOR_CALLTYPE add (NumericType value)       noexcept   { addInternal (value); return *this; }
    const AudioBlock& JUCE_VECTOR_CALLTYPE add (NumericType value) const noexcept   { addInternal (value); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       add (AudioBlock<OtherSampleType> src)       noexcept   { addInternal (src); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& add (AudioBlock<OtherSampleType> src) const noexcept   { addInternal (src); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       JUCE_VECTOR_CALLTYPE replaceWithSumOf (AudioBlock<OtherSampleType> src, NumericType value)      noexcept    { replaceWithSumOfInternal (src, value); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& JUCE_VECTOR_CALLTYPE replaceWithSumOf (AudioBlock<OtherSampleType> src, NumericType value) const noexcept   { replaceWithSumOfInternal (src, value); return *this; }

    template <typename Src1SampleType, typename Src2SampleType>
    AudioBlock&       replaceWithSumOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2)       noexcept   { replaceWithSumOfInternal (src1, src2); return *this; }
    template <typename Src1SampleType, typename Src2SampleType>
    const AudioBlock& replaceWithSumOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept   { replaceWithSumOfInternal (src1, src2); return *this; }
 
    //==============================================================================
    AudioBlock&       JUCE_VECTOR_CALLTYPE subtract (NumericType value)       noexcept   { subtractInternal (value); return *this; }
    const AudioBlock& JUCE_VECTOR_CALLTYPE subtract (NumericType value) const noexcept   { subtractInternal (value); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       subtract (AudioBlock<OtherSampleType> src)       noexcept   { subtractInternal (src); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& subtract (AudioBlock<OtherSampleType> src) const noexcept   { subtractInternal (src); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       JUCE_VECTOR_CALLTYPE replaceWithDifferenceOf (AudioBlock<OtherSampleType> src, NumericType value)       noexcept   { replaceWithDifferenceOfInternal (src, value); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& JUCE_VECTOR_CALLTYPE replaceWithDifferenceOf (AudioBlock<OtherSampleType> src, NumericType value) const noexcept   { replaceWithDifferenceOfInternal (src, value); return *this; }

    template <typename Src1SampleType, typename Src2SampleType>
    AudioBlock&       replaceWithDifferenceOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2)       noexcept   { replaceWithDifferenceOfInternal (src1, src2); return *this; }
    template <typename Src1SampleType, typename Src2SampleType>
    const AudioBlock& replaceWithDifferenceOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept   { replaceWithDifferenceOfInternal (src1, src2); return *this; }
 
    //==============================================================================
    AudioBlock&       JUCE_VECTOR_CALLTYPE multiplyBy (NumericType value)       noexcept   { multiplyByInternal (value); return *this; }
    const AudioBlock& JUCE_VECTOR_CALLTYPE multiplyBy (NumericType value) const noexcept   { multiplyByInternal (value); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       multiplyBy (AudioBlock<OtherSampleType> src)       noexcept   { multiplyByInternal (src); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& multiplyBy (AudioBlock<OtherSampleType> src) const noexcept   { multiplyByInternal (src); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       JUCE_VECTOR_CALLTYPE replaceWithProductOf (AudioBlock<OtherSampleType> src, NumericType value)       noexcept   { replaceWithProductOfInternal (src, value); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& JUCE_VECTOR_CALLTYPE replaceWithProductOf (AudioBlock<OtherSampleType> src, NumericType value) const noexcept   { replaceWithProductOfInternal (src, value); return *this; }

    template <typename Src1SampleType, typename Src2SampleType>
    AudioBlock&       replaceWithProductOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2)       noexcept   { replaceWithProductOfInternal (src1, src2); return *this; }
    template <typename Src1SampleType, typename Src2SampleType>
    const AudioBlock& replaceWithProductOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept   { replaceWithProductOfInternal (src1, src2); return *this; }
 
    //==============================================================================
    template <typename OtherSampleType, typename SmoothingType>
    AudioBlock&       multiplyBy (SmoothedValue<OtherSampleType, SmoothingType>& value)       noexcept   { multiplyByInternal (value); return *this; }
    template <typename OtherSampleType, typename SmoothingType>
    const AudioBlock& multiplyBy (SmoothedValue<OtherSampleType, SmoothingType>& value) const noexcept   { multiplyByInternal (value); return *this; }

    template <typename BlockSampleType, typename SmootherSampleType, typename SmoothingType>
    AudioBlock&       replaceWithProductOf (AudioBlock<BlockSampleType> src, SmoothedValue<SmootherSampleType, SmoothingType>& value)       noexcept   { replaceWithProductOfInternal (src, value); return *this; }
    template <typename BlockSampleType, typename SmootherSampleType, typename SmoothingType>
    const AudioBlock& replaceWithProductOf (AudioBlock<BlockSampleType> src, SmoothedValue<SmootherSampleType, SmoothingType>& value) const noexcept   { replaceWithProductOfInternal (src, value); return *this; }
 
    //==============================================================================
    template <typename OtherSampleType>
    AudioBlock&       JUCE_VECTOR_CALLTYPE addProductOf (AudioBlock<OtherSampleType> src, NumericType factor)       noexcept   { addProductOfInternal (src, factor); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& JUCE_VECTOR_CALLTYPE addProductOf (AudioBlock<OtherSampleType> src, NumericType factor) const noexcept   { addProductOfInternal (src, factor); return *this; }

    template <typename Src1SampleType, typename Src2SampleType>
    AudioBlock&       addProductOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2)       noexcept   { addProductOfInternal (src1, src2); return *this; }
    template <typename Src1SampleType, typename Src2SampleType>
    const AudioBlock& addProductOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept   { addProductOfInternal (src1, src2); return *this; }
 
    //==============================================================================
    AudioBlock&       negate()       noexcept   { negateInternal(); return *this; }
    const AudioBlock& negate() const noexcept   { negateInternal(); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       replaceWithNegativeOf (AudioBlock<OtherSampleType> src)       noexcept   { replaceWithNegativeOfInternal (src); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& replaceWithNegativeOf (AudioBlock<OtherSampleType> src) const noexcept   { replaceWithNegativeOfInternal (src); return *this; }

    template <typename OtherSampleType>
    AudioBlock&       replaceWithAbsoluteValueOf (AudioBlock<OtherSampleType> src)       noexcept   { replaceWithAbsoluteValueOfInternal (src); return *this; }
    template <typename OtherSampleType>
    const AudioBlock& replaceWithAbsoluteValueOf (AudioBlock<OtherSampleType> src) const noexcept   { replaceWithAbsoluteValueOfInternal (src); return *this; }
 
    //==============================================================================
    template <typename Src1SampleType, typename Src2SampleType>
    AudioBlock&       replaceWithMinOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2)       noexcept   { replaceWithMinOfInternal (src1, src2); return *this; }
    template <typename Src1SampleType, typename Src2SampleType>
    const AudioBlock& replaceWithMinOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept   { replaceWithMinOfInternal (src1, src2); return *this; }

    template <typename Src1SampleType, typename Src2SampleType>
    AudioBlock&       replaceWithMaxOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2)       noexcept   { replaceWithMaxOfInternal (src1, src2); return *this; }
    template <typename Src1SampleType, typename Src2SampleType>
    const AudioBlock& replaceWithMaxOf (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept   { replaceWithMaxOfInternal (src1, src2); return *this; }
 
    //==============================================================================
    Range<typename std::remove_const<NumericType>::type> findMinAndMax() const noexcept
    {
        if (numChannels == 0)
            return {};
 
        auto n = numSamples * sizeFactor;
        auto minmax = FloatVectorOperations::findMinAndMax (getDataPointer (0), n);
 
        for (size_t ch = 1; ch < numChannels; ++ch)
            minmax = minmax.getUnionWith (FloatVectorOperations::findMinAndMax (getDataPointer (ch), n));
 
        return minmax;
    }
 
    //==============================================================================
    // Convenient operator wrappers.
    AudioBlock&       JUCE_VECTOR_CALLTYPE operator+= (NumericType value)       noexcept   { return add (value); }
    const AudioBlock& JUCE_VECTOR_CALLTYPE operator+= (NumericType value) const noexcept   { return add (value); }
 
    AudioBlock&                            operator+= (AudioBlock src)         noexcept   { return add (src); }
    const AudioBlock&                      operator+= (AudioBlock src)   const noexcept   { return add (src); }
 
    AudioBlock&       JUCE_VECTOR_CALLTYPE operator-= (NumericType value)       noexcept   { return subtract (value); }
    const AudioBlock& JUCE_VECTOR_CALLTYPE operator-= (NumericType value) const noexcept   { return subtract (value); }
 
    AudioBlock&                            operator-= (AudioBlock src)         noexcept   { return subtract (src); }
    const AudioBlock&                      operator-= (AudioBlock src)   const noexcept   { return subtract (src); }
 
    AudioBlock&       JUCE_VECTOR_CALLTYPE operator*= (NumericType value)       noexcept   { return multiplyBy (value); }
    const AudioBlock& JUCE_VECTOR_CALLTYPE operator*= (NumericType value) const noexcept   { return multiplyBy (value); }
 
    AudioBlock&                            operator*= (AudioBlock src)         noexcept   { return multiplyBy (src); }
    const AudioBlock&                      operator*= (AudioBlock src)   const noexcept   { return multiplyBy (src); }
 
    template <typename OtherSampleType, typename SmoothingType>
    AudioBlock&       operator*= (SmoothedValue<OtherSampleType, SmoothingType>& value)       noexcept   { return multiplyBy (value); }
    template <typename OtherSampleType, typename SmoothingType>
    const AudioBlock& operator*= (SmoothedValue<OtherSampleType, SmoothingType>& value) const noexcept   { return multiplyBy (value); }
 
    //==============================================================================
    // This class can only be used with floating point types
    static_assert (std::is_same<std::remove_const_t<SampleType>, float>::value
                    || std::is_same<std::remove_const_t<SampleType>, double>::value
                  #if JUCE_USE_SIMD
                    || std::is_same<std::remove_const_t<SampleType>, SIMDRegister<float>>::value
                    || std::is_same<std::remove_const_t<SampleType>, SIMDRegister<double>>::value
                  #endif
                   , "AudioBlock only supports single or double precision floating point types");
 
    //==============================================================================
    template <typename Src1SampleType, typename Src2SampleType, typename FunctionType>
    static void process (AudioBlock<Src1SampleType> inBlock, AudioBlock<Src2SampleType> outBlock, FunctionType&& function)
    {
        auto len = inBlock.getNumSamples();
        auto numChans = inBlock.getNumChannels();
 
        jassert (len == outBlock.getNumSamples());
        jassert (numChans == outBlock.getNumChannels());
 
        for (ChannelCountType c = 0; c < numChans; ++c)
        {
            auto* src = inBlock.getChannelPointer (c);
            auto* dst = outBlock.getChannelPointer (c);
 
            for (size_t i = 0; i < len; ++i)
                dst[i] = function (src[i]);
        }
    }
 
private:
    NumericType* getDataPointer (size_t channel) const noexcept
    {
        return reinterpret_cast<NumericType*> (getChannelPointer (channel));
    }
 
    //==============================================================================
    void JUCE_VECTOR_CALLTYPE clearInternal() const noexcept
    {
        auto n = numSamples * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::clear (getDataPointer (ch), n);
    }
 
    void JUCE_VECTOR_CALLTYPE fillInternal (NumericType value) const noexcept
    {
        auto n = numSamples * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::fill (getDataPointer (ch), value, n);
    }
 
    template <typename OtherSampleType>
    void copyFromInternal (const AudioBlock<OtherSampleType>& src) const noexcept
    {
        auto maxChannels = jmin (src.numChannels, numChannels);
        auto n = jmin (src.numSamples * src.sizeFactor, numSamples * sizeFactor);
 
        for (size_t ch = 0; ch < maxChannels; ++ch)
            FloatVectorOperations::copy (getDataPointer (ch), src.getDataPointer (ch), n);
    }
 
    template <typename OtherNumericType>
    void copyFromInternal (const AudioBuffer<OtherNumericType>& src, size_t srcPos, size_t dstPos, size_t numElements) const
    {
        auto srclen = static_cast<size_t> (src.getNumSamples()) / sizeFactor;
        auto n = jmin (srclen - srcPos, numSamples - dstPos, numElements) * sizeFactor;
        auto maxChannels = jmin (static_cast<size_t> (src.getNumChannels()), static_cast<size_t> (numChannels));
 
        for (size_t ch = 0; ch < maxChannels; ++ch)
            FloatVectorOperations::copy (getDataPointer (ch) + (dstPos * sizeFactor),
                                         src.getReadPointer ((int) ch, (int) (srcPos * sizeFactor)),
                                         n);
    }
 
    void moveInternal (size_t srcPos, size_t dstPos,
                       size_t numElements = std::numeric_limits<size_t>::max()) const noexcept
    {
        jassert (srcPos <= numSamples && dstPos <= numSamples);
        auto len = jmin (numSamples - srcPos, numSamples - dstPos, numElements) * sizeof (SampleType);
 
        if (len != 0)
            for (size_t ch = 0; ch < numChannels; ++ch)
                ::memmove (getChannelPointer (ch) + dstPos,
                           getChannelPointer (ch) + srcPos, len);
    }
 
    //==============================================================================
    void JUCE_VECTOR_CALLTYPE addInternal (NumericType value) const noexcept
    {
        auto n = numSamples * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::add (getDataPointer (ch), value, n);
    }
 
    template <typename OtherSampleType>
    void addInternal (AudioBlock<OtherSampleType> src) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::add (getDataPointer (ch), src.getDataPointer (ch), n);
    }
 
    template <typename OtherSampleType>
    void JUCE_VECTOR_CALLTYPE replaceWithSumOfInternal (AudioBlock<OtherSampleType> src, NumericType value) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::add (getDataPointer (ch), src.getDataPointer (ch), value, n);
    }
 
    template <typename Src1SampleType, typename Src2SampleType>
    void replaceWithSumOfInternal (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept
    {
        jassert (numChannels == src1.numChannels && src1.numChannels == src2.numChannels);
        auto n = jmin (numSamples, src1.numSamples, src2.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::add (getDataPointer (ch), src1.getDataPointer (ch), src2.getDataPointer (ch), n);
    }
 
    //==============================================================================
    constexpr void JUCE_VECTOR_CALLTYPE subtractInternal (NumericType value) const noexcept
    {
        addInternal (value * static_cast<NumericType> (-1.0));
    }
 
    template <typename OtherSampleType>
    void subtractInternal (AudioBlock<OtherSampleType> src) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::subtract (getDataPointer (ch), src.getDataPointer (ch), n);
    }
 
    template <typename OtherSampleType>
    void JUCE_VECTOR_CALLTYPE replaceWithDifferenceOfInternal (AudioBlock<OtherSampleType> src, NumericType value) const noexcept
    {
        replaceWithSumOfInternal (src, static_cast<NumericType> (-1.0) * value);
    }
 
    template <typename Src1SampleType, typename Src2SampleType>
    void replaceWithDifferenceOfInternal (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept
    {
        jassert (numChannels == src1.numChannels && src1.numChannels == src2.numChannels);
        auto n = jmin (numSamples, src1.numSamples, src2.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::subtract (getDataPointer (ch), src1.getDataPointer (ch), src2.getDataPointer (ch), n);
    }
 
    //==============================================================================
    void JUCE_VECTOR_CALLTYPE multiplyByInternal (NumericType value) const noexcept
    {
        auto n = numSamples * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::multiply (getDataPointer (ch), value, n);
    }
 
    template <typename OtherSampleType>
    void multiplyByInternal (AudioBlock<OtherSampleType> src) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::multiply (getDataPointer (ch), src.getDataPointer (ch), n);
    }
 
    template <typename OtherSampleType>
    void JUCE_VECTOR_CALLTYPE replaceWithProductOfInternal (AudioBlock<OtherSampleType> src, NumericType value) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::multiply (getDataPointer (ch), src.getDataPointer (ch), value, n);
    }
 
    template <typename Src1SampleType, typename Src2SampleType>
    void replaceWithProductOfInternal (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept
    {
        jassert (numChannels == src1.numChannels && src1.numChannels == src2.numChannels);
        auto n = jmin (numSamples, src1.numSamples, src2.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::multiply (getDataPointer (ch), src1.getDataPointer (ch), src2.getDataPointer (ch), n);
    }
 
    template <typename OtherSampleType, typename SmoothingType>
    void multiplyByInternal (SmoothedValue<OtherSampleType, SmoothingType>& value) const noexcept
    {
        if (! value.isSmoothing())
        {
            multiplyByInternal ((NumericType) value.getTargetValue());
        }
        else
        {
            for (size_t i = 0; i < numSamples; ++i)
            {
                const auto scaler = (NumericType) value.getNextValue();
 
                for (size_t ch = 0; ch < numChannels; ++ch)
                    getDataPointer (ch)[i] *= scaler;
            }
        }
    }
 
    template <typename BlockSampleType, typename SmootherSampleType, typename SmoothingType>
    void replaceWithProductOfInternal (AudioBlock<BlockSampleType> src, SmoothedValue<SmootherSampleType, SmoothingType>& value) const noexcept
    {
        jassert (numChannels == src.numChannels);
 
        if (! value.isSmoothing())
        {
            replaceWithProductOfInternal (src, (NumericType) value.getTargetValue());
        }
        else
        {
            auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
            for (size_t i = 0; i < n; ++i)
            {
                const auto scaler = (NumericType) value.getNextValue();
 
                for (size_t ch = 0; ch < numChannels; ++ch)
                    getDataPointer (ch)[i] = scaler * src.getChannelPointer (ch)[i];
            }
        }
    }
 
    //==============================================================================
    template <typename OtherSampleType>
    void JUCE_VECTOR_CALLTYPE addProductOfInternal (AudioBlock<OtherSampleType> src, NumericType factor) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::addWithMultiply (getDataPointer (ch), src.getDataPointer (ch), factor, n);
    }
 
    template <typename Src1SampleType, typename Src2SampleType>
    void addProductOfInternal (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept
    {
        jassert (numChannels == src1.numChannels && src1.numChannels == src2.numChannels);
        auto n = jmin (numSamples, src1.numSamples, src2.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::addWithMultiply (getDataPointer (ch), src1.getDataPointer (ch), src2.getDataPointer (ch), n);
    }
 
    //==============================================================================
    constexpr void negateInternal() const noexcept
    {
        multiplyByInternal (static_cast<NumericType> (-1.0));
    }
 
    template <typename OtherSampleType>
    void replaceWithNegativeOfInternal (AudioBlock<OtherSampleType> src) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::negate (getDataPointer (ch), src.getDataPointer (ch), n);
    }
 
    template <typename OtherSampleType>
    void replaceWithAbsoluteValueOfInternal (AudioBlock<OtherSampleType> src) const noexcept
    {
        jassert (numChannels == src.numChannels);
        auto n = jmin (numSamples, src.numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::abs (getDataPointer (ch), src.getDataPointer (ch), n);
    }
 
    //==============================================================================
    template <typename Src1SampleType, typename Src2SampleType>
    void replaceWithMinOfInternal (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept
    {
        jassert (numChannels == src1.numChannels && src1.numChannels == src2.numChannels);
        auto n = jmin (src1.numSamples, src2.numSamples, numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::min (getDataPointer (ch), src1.getDataPointer (ch), src2.getDataPointer (ch), n);
    }
 
    template <typename Src1SampleType, typename Src2SampleType>
    void replaceWithMaxOfInternal (AudioBlock<Src1SampleType> src1, AudioBlock<Src2SampleType> src2) const noexcept
    {
        jassert (numChannels == src1.numChannels && src1.numChannels == src2.numChannels);
        auto n = jmin (src1.numSamples, src2.numSamples, numSamples) * sizeFactor;
 
        for (size_t ch = 0; ch < numChannels; ++ch)
            FloatVectorOperations::max (getDataPointer (ch), src1.getDataPointer (ch), src2.getDataPointer (ch), n);
    }
 
    //==============================================================================
    using ChannelCountType = unsigned int;
 
    //==============================================================================
    static constexpr size_t sizeFactor    = sizeof (SampleType) / sizeof (NumericType);
    static constexpr size_t elementMask   = sizeFactor - 1;
    static constexpr size_t byteMask      = (sizeFactor * sizeof (NumericType)) - 1;
 
   #if JUCE_USE_SIMD
    static constexpr size_t defaultAlignment = sizeof (SIMDRegister<NumericType>);
   #else
    static constexpr size_t defaultAlignment = sizeof (NumericType);
   #endif
 
    SampleType* const* channels;
    ChannelCountType numChannels = 0;
    size_t startSample = 0, numSamples = 0;
 
    template <typename OtherSampleType>
    friend class AudioBlock;
};
 
} // namespace dsp
} // namespace juce