read_frames()

std::vector< Kakshya::DataVariant > MayaFlux::IO::SoundFileReader::read_frames	(	uint64_t	num_frames,
		uint64_t	offset = 0
	)

Read a specific number of frames from the file.

Parameters

num_frames	Number of frames to read.
offset	Frame offset from beginning.

Returns

DataVariant containing std::vector<double>.

Definition at line 515 of file SoundFileReader.cpp.

{
    std::shared_lock<std::shared_mutex> lock(m_context_mutex);
 
    if (!m_context || !m_context->is_valid()) {
        set_error("File not open");
        return {};
    }
 
    auto ctx = m_context;
 
    if (offset != m_current_frame_position.load()) {
        lock.unlock();
        std::unique_lock<std::shared_mutex> write_lock(m_context_mutex);
 
        if (!m_context || !m_context->is_valid()) {
            set_error("File closed during operation");
            return {};
        }
 
        ctx = m_context;
        if (!seek_internal(ctx, offset)) {
            return {};
        }
 
        write_lock.unlock();
        lock.lock();
 
        if (!m_context || !m_context->is_valid()) {
            set_error("File closed during operation");
            return {};
        }
 
        ctx = m_context;
    }
 
    return decode_frames(ctx, num_frames, offset);
}

References decode_frames(), m_context, m_context_mutex, m_current_frame_position, seek_internal(), and set_error().

Referenced by read_all(), and read_region().

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