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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 ctamixer.h
*
* @Brief
* This file contains the definition of the Audio Mixer
* resource management object.
*
* @Author Liu Chun
* @Date May 21 2008
*
*/
#ifndef CTAMIXER_H
#define CTAMIXER_H
#include "ctresource.h"
#include <linux/spinlock.h>
/* Define the descriptor of a summation node resource */
struct sum {
struct rsc rsc; /* Basic resource info */
unsigned char idx[8];
};
/* Define sum resource request description info */
struct sum_desc {
unsigned int msr;
};
struct sum_mgr {
struct rsc_mgr mgr; /* Basic resource manager info */
spinlock_t mgr_lock;
/* request one sum resource */
int (*get_sum)(struct sum_mgr *mgr,
const struct sum_desc *desc, struct sum **rsum);
/* return one sum resource */
int (*put_sum)(struct sum_mgr *mgr, struct sum *sum);
};
/* Constructor and destructor of daio resource manager */
int sum_mgr_create(void *hw, struct sum_mgr **rsum_mgr);
int sum_mgr_destroy(struct sum_mgr *sum_mgr);
/* Define the descriptor of a amixer resource */
struct amixer_rsc_ops;
struct amixer {
struct rsc rsc; /* Basic resource info */
unsigned char idx[8];
struct rsc *input; /* pointer to a resource acting as source */
struct sum *sum; /* Put amixer output to this summation node */
struct amixer_rsc_ops *ops; /* AMixer specific operations */
};
struct amixer_rsc_ops {
int (*set_input)(struct amixer *amixer, struct rsc *rsc);
int (*set_scale)(struct amixer *amixer, unsigned int scale);
int (*set_invalid_squash)(struct amixer *amixer, unsigned int iv);
int (*set_sum)(struct amixer *amixer, struct sum *sum);
int (*commit_write)(struct amixer *amixer);
/* Only for interleaved recording */
int (*commit_raw_write)(struct amixer *amixer);
int (*setup)(struct amixer *amixer, struct rsc *input,
unsigned int scale, struct sum *sum);
int (*get_scale)(struct amixer *amixer);
};
/* Define amixer resource request description info */
struct amixer_desc {
unsigned int msr;
};
struct amixer_mgr {
struct rsc_mgr mgr; /* Basic resource manager info */
spinlock_t mgr_lock;
/* request one amixer resource */
int (*get_amixer)(struct amixer_mgr *mgr,
const struct amixer_desc *desc,
struct amixer **ramixer);
/* return one amixer resource */
int (*put_amixer)(struct amixer_mgr *mgr, struct amixer *amixer);
};
/* Constructor and destructor of amixer resource manager */
int amixer_mgr_create(void *hw, struct amixer_mgr **ramixer_mgr);
int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
#endif /* CTAMIXER_H */
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