100 строки
2.9 KiB
C
100 строки
2.9 KiB
C
/**
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* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
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*
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* This source file is released under GPL v2 license (no other versions).
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* See the COPYING file included in the main directory of this source
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* distribution for the license terms and conditions.
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*
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* @File ctamixer.h
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*
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* @Brief
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* This file contains the definition of the Audio Mixer
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* resource management object.
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*
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* @Author Liu Chun
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* @Date May 21 2008
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*
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*/
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#ifndef CTAMIXER_H
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#define CTAMIXER_H
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#include "ctresource.h"
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#include <linux/spinlock.h>
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#include <sound/core.h>
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/* Define the descriptor of a summation node resource */
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struct sum {
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struct rsc rsc; /* Basic resource info */
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unsigned char idx[8];
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};
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/* Define sum resource request description info */
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struct sum_desc {
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unsigned int msr;
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};
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struct sum_mgr {
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struct rsc_mgr mgr; /* Basic resource manager info */
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struct snd_card *card; /* pointer to this card */
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spinlock_t mgr_lock;
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/* request one sum resource */
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int (*get_sum)(struct sum_mgr *mgr,
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const struct sum_desc *desc, struct sum **rsum);
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/* return one sum resource */
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int (*put_sum)(struct sum_mgr *mgr, struct sum *sum);
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};
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/* Constructor and destructor of daio resource manager */
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int sum_mgr_create(struct hw *hw, struct sum_mgr **rsum_mgr);
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int sum_mgr_destroy(struct sum_mgr *sum_mgr);
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/* Define the descriptor of a amixer resource */
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struct amixer_rsc_ops;
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struct amixer {
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struct rsc rsc; /* Basic resource info */
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unsigned char idx[8];
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struct rsc *input; /* pointer to a resource acting as source */
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struct sum *sum; /* Put amixer output to this summation node */
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const struct amixer_rsc_ops *ops; /* AMixer specific operations */
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};
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struct amixer_rsc_ops {
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int (*set_input)(struct amixer *amixer, struct rsc *rsc);
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int (*set_scale)(struct amixer *amixer, unsigned int scale);
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int (*set_invalid_squash)(struct amixer *amixer, unsigned int iv);
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int (*set_sum)(struct amixer *amixer, struct sum *sum);
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int (*commit_write)(struct amixer *amixer);
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/* Only for interleaved recording */
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int (*commit_raw_write)(struct amixer *amixer);
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int (*setup)(struct amixer *amixer, struct rsc *input,
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unsigned int scale, struct sum *sum);
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int (*get_scale)(struct amixer *amixer);
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};
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/* Define amixer resource request description info */
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struct amixer_desc {
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unsigned int msr;
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};
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struct amixer_mgr {
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struct rsc_mgr mgr; /* Basic resource manager info */
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struct snd_card *card; /* pointer to this card */
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spinlock_t mgr_lock;
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/* request one amixer resource */
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int (*get_amixer)(struct amixer_mgr *mgr,
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const struct amixer_desc *desc,
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struct amixer **ramixer);
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/* return one amixer resource */
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int (*put_amixer)(struct amixer_mgr *mgr, struct amixer *amixer);
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};
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/* Constructor and destructor of amixer resource manager */
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int amixer_mgr_create(struct hw *hw, struct amixer_mgr **ramixer_mgr);
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int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
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#endif /* CTAMIXER_H */
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