get_channel_frames() [2/2]

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

Get the fixed capacity of the circular buffer if enabled.

Returns

Capacity in frames if circular mode is active, 0 otherwise

Definition at line 221 of file DynamicSoundStream.cpp.

{
    if (channel >= get_num_channels())
        return {};
 
    if (m_structure.organization == OrganizationStrategy::INTERLEAVED) {
        MF_WARN(Journal::Component::Kakshya, Journal::Context::ContainerProcessing,
            "Direct span access not supported for interleaved data. "
            "Use get_frames() or Kakshya::extract_channel_data() instead.");
        return {};
    }
 
    std::span<const double> result;
    seqlock_read_void(m_data_lock, 8, [&] {
        if (channel >= m_data.size())
            return;
        const auto& channel_data = std::get<std::vector<double>>(m_data[channel]);
        if (start_frame >= channel_data.size())
            return;
        uint64_t available_frames = channel_data.size() - start_frame;
        uint64_t actual_frames = std::min(num_frames, available_frames);
        result = { channel_data.data() + start_frame, actual_frames };
    });
    return result;
}

References MayaFlux::Kakshya::SoundStreamContainer::channel_data(), MayaFlux::Journal::ContainerProcessing, MayaFlux::Kakshya::SoundStreamContainer::get_num_channels(), MayaFlux::Kakshya::INTERLEAVED, MayaFlux::Journal::Kakshya, MayaFlux::Kakshya::SoundStreamContainer::m_data, MayaFlux::Kakshya::SoundStreamContainer::m_data_lock, MayaFlux::Kakshya::SoundStreamContainer::m_structure, MF_WARN, and MayaFlux::Kakshya::ContainerDataStructure::organization.

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