get_channel_frames() [1/2]

void MayaFlux::Kakshya::DynamicSoundStream::get_channel_frames	(	std::span< double >	output,
		uint32_t	channel,
		uint64_t	start_frame
	)		const

Definition at line 260 of file DynamicSoundStream.cpp.

{
    if (channel >= get_num_channels() || output.empty()) {
        return;
    }
 
    uint64_t num_frames = output.size();
 
    if (m_structure.organization == OrganizationStrategy::INTERLEAVED) {
        std::shared_lock lock(m_data_mutex);
 
        if (m_data.empty()) {
            std::ranges::fill(output, 0.0);
            return;
        }
 
        const auto& interleaved_data = std::get<std::vector<double>>(m_data[0]);
        uint32_t num_channels = get_num_channels();
 
        for (uint64_t frame = 0; frame < num_frames; ++frame) {
            uint64_t interleaved_index = (start_frame + frame) * num_channels + channel;
            if (interleaved_index < interleaved_data.size()) {
                output[frame] = interleaved_data[interleaved_index];
            } else {
                output[frame] = 0.0;
            }
        }
    } else {
        std::shared_lock lock(m_data_mutex);
 
        if (channel >= m_data.size()) {
            std::ranges::fill(output, 0.0);
            return;
        }
 
        const auto& channel_data = std::get<std::vector<double>>(m_data[channel]);
 
        for (uint64_t frame = 0; frame < num_frames; ++frame) {
            uint64_t data_index = start_frame + frame;
            if (data_index < channel_data.size()) {
                output[frame] = channel_data[data_index];
            } else {
                output[frame] = 0.0;
            }
        }
    }
}

References MayaFlux::Kakshya::SoundStreamContainer::channel_data(), MayaFlux::Kakshya::SoundStreamContainer::get_num_channels(), MayaFlux::Kakshya::INTERLEAVED, MayaFlux::Kakshya::SoundStreamContainer::lock(), MayaFlux::Kakshya::SoundStreamContainer::m_data, MayaFlux::Kakshya::SoundStreamContainer::m_data_mutex, MayaFlux::Kakshya::SoundStreamContainer::m_structure, and MayaFlux::Kakshya::ContainerDataStructure::organization.

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