/* External Volume Control */
/* SPDX-FileCopyrightText: Copyright © 2026 Arun Raghavan */
/* SPDX-FileCopyrightText: Copyright © 2026 Julian Bouzas */
/* SPDX-License-Identifier: MIT */

#ifndef ACP_EXT_VOLUME_H
#define ACP_EXT_VOLUME_H

#include <stdint.h>

#include <spa/param/audio/volume.h>
#include <spa/pod/event.h>

#define MAX_PORTS 256

typedef struct pa_cvolume pa_cvolume;

typedef void (*ext_volume_notifier_t) (void *data, struct spa_event *event);

struct caps_reply {
	int res;
	enum spa_audio_volume_control_flags caps;
};

struct mute_reply {
	int res;
	bool mute;
};

struct vols_reply {
	int res;
	uint32_t channels;
	double values[SPA_AUDIO_MAX_CHANNELS];
};

struct spa_acp_ext_volume {
	bool initialized;
	enum spa_audio_volume_control_flags flags;

	ext_volume_notifier_t notifier_cb;
	void *notifier_data;

	struct caps_reply caps_reply;
	struct mute_reply mute_replies[MAX_PORTS];
	struct vols_reply vols_replies[MAX_PORTS];
};

int spa_acp_ext_volume_init(struct spa_acp_ext_volume *ext_volume, const char *device,
		ext_volume_notifier_t notifier_cb, void *notifier_data);

int spa_acp_ext_volume_read_volume(struct spa_acp_ext_volume *ext_volume,
		const char *device, const char *port_name, uint32_t port_index, pa_cvolume *cvol);

int spa_acp_ext_volume_write_volume_absolute(struct spa_acp_ext_volume *ext_volume,
		const char *device, const char *port_name, uint32_t port_index, pa_cvolume *cvol);

int spa_acp_ext_volume_write_volume_relative(struct spa_acp_ext_volume *ext_volume,
		const char *device, const char *port_name, uint32_t port_index, float step);

int spa_acp_ext_volume_read_mute(struct spa_acp_ext_volume *ext_volume,
		const char *device, const char *port_name, uint32_t port_index, bool *mute);

int spa_acp_ext_volume_write_mute_value(struct spa_acp_ext_volume *ext_volume,
		const char *device, const char *port_name, uint32_t port_index, bool mute);

int spa_acp_ext_volume_write_mute_toggle(struct spa_acp_ext_volume *ext_volume,
		const char *device, const char *port_name, uint32_t port_index);

#endif /* ACP_EXT_VOLUME_H */