get_feature_report()

int MayaFlux::Core::HIDBackend::get_feature_report	(	uint32_t	device_id,
		uint8_t	report_id,
		std::span< uint8_t >	buffer
	)

Get a feature report from a device.

Parameters

device_id	Target device
report_id	Report ID to get
buffer	Buffer to receive data

Returns

Number of bytes received, or -1 on error

Definition at line 359 of file HIDBackend.cpp.

{
    std::lock_guard lock(m_devices_mutex);
    auto it = m_open_devices.find(device_id);
    if (it == m_open_devices.end() || !it->second->handle) {
        return -1;
    }
    buffer[0] = report_id;
    return hid_get_feature_report(it->second->handle, buffer.data(), buffer.size());
}

References buffer, m_devices_mutex, m_open_devices, and report_id.