Method copyWithSampleAccurateGainValuesFrom

src/core/AudioBus.cpp:644–676

}

void AudioBus::copyWithSampleAccurateGainValuesFrom(const AudioBus & sourceBus, float * gainValues, int numberOfGainValues)
{
    // Make sure we're processing from the same type of bus.
    // We *are* able to process from mono -> stereo
    if (sourceBus.numberOfChannels() != Channels::Mono && !topologyMatches(sourceBus))
    {
        ASSERT_NOT_REACHED();
        return;
    }

    if (!gainValues || numberOfGainValues > sourceBus.length())
    {
        ASSERT_NOT_REACHED();
        return;
    }

    if (sourceBus.length() == numberOfGainValues && sourceBus.length() == length() && sourceBus.isSilent())
    {
        zero();
        return;
    }

    // We handle both the 1 -> N and N -> N case here.
    const float * source = sourceBus.channel(0)->data();
    for (int channelIndex = 0; channelIndex < numberOfChannels(); ++channelIndex)
    {
        if (sourceBus.numberOfChannels() == numberOfChannels())
        {
            source = sourceBus.channel(channelIndex)->data();
        }
        vmul(source, 1, gainValues, 1, channel(channelIndex)->mutableData(), 1, numberOfGainValues);
    }
}

std::unique_ptr<AudioBus> AudioBus::createBySampleRateConverting(const AudioBus * sourceBus, bool mixToMono, float newSampleRate)
{