// license:BSD-3-Clause // copyright-holders:Derrick Renaud, Couriersud #ifndef MAME_SOUND_FLT_VOL_H #define MAME_SOUND_FLT_VOL_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> filter_volume_device class filter_volume_device : public device_t, public device_sound_interface { public: filter_volume_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); filter_volume_device &set_gain(float gain); // also may be used in mcfg to set initial value (default is 1.0) float gain() { return m_gain; } protected: // device-level overrides virtual void device_start() override ATTR_COLD; // sound stream update overrides virtual void sound_stream_update(sound_stream &stream) override; private: sound_stream* m_stream; float m_gain; }; DECLARE_DEVICE_TYPE(FILTER_VOLUME, filter_volume_device) #endif // MAME_SOUND_FLT_VOL_H