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/**
* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
*
* This source file is released under GPL v2 license (no other versions).
* See the COPYING file included in the main directory of this source
* distribution for the license terms and conditions.
*
* @File ctmixer.h
*
* @Brief
* This file contains the definition of the mixer device functions.
*
* @Author Liu Chun
* @Date Mar 28 2008
*
*/
#ifndef CTMIXER_H
#define CTMIXER_H
#include "ctatc.h"
#include "ctresource.h"
#define INIT_VOL 0x1c00
enum MIXER_PORT_T {
MIX_WAVE_FRONT,
MIX_WAVE_REAR,
MIX_WAVE_CENTLFE,
MIX_WAVE_SURROUND,
MIX_SPDIF_OUT,
MIX_PCMO_FRONT,
MIX_MIC_IN,
MIX_LINE_IN,
MIX_SPDIF_IN,
MIX_PCMI_FRONT,
MIX_PCMI_REAR,
MIX_PCMI_CENTLFE,
MIX_PCMI_SURROUND,
NUM_MIX_PORTS
};
/* alsa mixer descriptor */
struct ct_mixer {
struct ct_atc *atc;
void **amixers; /* amixer resources for volume control */
void **sums; /* sum resources for signal collection */
unsigned int switch_state; /* A bit-map to indicate state of switches */
int (*get_output_ports)(struct ct_mixer *mixer, enum MIXER_PORT_T type,
struct rsc **rleft, struct rsc **rright);
int (*set_input_left)(struct ct_mixer *mixer,
enum MIXER_PORT_T type, struct rsc *rsc);
int (*set_input_right)(struct ct_mixer *mixer,
enum MIXER_PORT_T type, struct rsc *rsc);
};
int ct_alsa_mix_create(struct ct_atc *atc,
enum CTALSADEVS device,
const char *device_name);
int ct_mixer_create(struct ct_atc *atc, struct ct_mixer **rmixer);
int ct_mixer_destroy(struct ct_mixer *mixer);
#endif /* CTMIXER_H */
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