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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 ctsrc.h
*
* @Brief
* This file contains the definition of the Sample Rate Convertor
* resource management object.
*
* @Author Liu Chun
* @Date May 13 2008
*
*/
#ifndef CTSRC_H
#define CTSRC_H
#include "ctresource.h"
#include "ctimap.h"
#include <linux/spinlock.h>
#include <linux/list.h>
#include <sound/core.h>
#define SRC_STATE_OFF 0x0
#define SRC_STATE_INIT 0x4
#define SRC_STATE_RUN 0x5
#define SRC_SF_U8 0x0
#define SRC_SF_S16 0x1
#define SRC_SF_S24 0x2
#define SRC_SF_S32 0x3
#define SRC_SF_F32 0x4
/* Define the descriptor of a src resource */
enum SRCMODE {
MEMRD, /* Read data from host memory */
MEMWR, /* Write data to host memory */
ARCRW, /* Read from and write to audio ring channel */
NUM_SRCMODES
};
struct src_rsc_ops;
struct src {
struct rsc rsc; /* Basic resource info */
struct src *intlv; /* Pointer to next interleaved SRC in a series */
const struct src_rsc_ops *ops; /* SRC specific operations */
/* Number of contiguous srcs for interleaved usage */
unsigned char multi;
unsigned char mode; /* Working mode of this SRC resource */
};
struct src_rsc_ops {
int (*set_state)(struct src *src, unsigned int state);
int (*set_bm)(struct src *src, unsigned int bm);
int (*set_sf)(struct src *src, unsigned int sf);
int (*set_pm)(struct src *src, unsigned int pm);
int (*set_rom)(struct src *src, unsigned int rom);
int (*set_vo)(struct src *src, unsigned int vo);
int (*set_st)(struct src *src, unsigned int st);
int (*set_bp)(struct src *src, unsigned int bp);
int (*set_cisz)(struct src *src, unsigned int cisz);
int (*set_ca)(struct src *src, unsigned int ca);
int (*set_sa)(struct src *src, unsigned int sa);
int (*set_la)(struct src *src, unsigned int la);
int (*set_pitch)(struct src *src, unsigned int pitch);
int (*set_clr_zbufs)(struct src *src);
int (*commit_write)(struct src *src);
int (*get_ca)(struct src *src);
int (*init)(struct src *src);
struct src* (*next_interleave)(struct src *src);
};
/* Define src resource request description info */
struct src_desc {
/* Number of contiguous master srcs for interleaved usage */
unsigned char multi;
unsigned char msr;
unsigned char mode; /* Working mode of the requested srcs */
};
/* Define src manager object */
struct src_mgr {
struct rsc_mgr mgr; /* Basic resource manager info */
struct snd_card *card; /* pointer to this card */
spinlock_t mgr_lock;
/* request src resource */
int (*get_src)(struct src_mgr *mgr,
const struct src_desc *desc, struct src **rsrc);
/* return src resource */
int (*put_src)(struct src_mgr *mgr, struct src *src);
int (*src_enable_s)(struct src_mgr *mgr, struct src *src);
int (*src_enable)(struct src_mgr *mgr, struct src *src);
int (*src_disable)(struct src_mgr *mgr, struct src *src);
int (*commit_write)(struct src_mgr *mgr);
};
/* Define the descriptor of a SRC Input Mapper resource */
struct srcimp_mgr;
struct srcimp_rsc_ops;
struct srcimp {
struct rsc rsc;
unsigned char idx[8];
struct imapper *imappers;
unsigned int mapped; /* A bit-map indicating which conj rsc is mapped */
struct srcimp_mgr *mgr;
const struct srcimp_rsc_ops *ops;
};
struct srcimp_rsc_ops {
int (*map)(struct srcimp *srcimp, struct src *user, struct rsc *input);
int (*unmap)(struct srcimp *srcimp);
};
/* Define SRCIMP resource request description info */
struct srcimp_desc {
unsigned int msr;
};
struct srcimp_mgr {
struct rsc_mgr mgr; /* Basic resource manager info */
struct snd_card *card; /* pointer to this card */
spinlock_t mgr_lock;
spinlock_t imap_lock;
struct list_head imappers;
struct imapper *init_imap;
unsigned int init_imap_added;
/* request srcimp resource */
int (*get_srcimp)(struct srcimp_mgr *mgr,
const struct srcimp_desc *desc,
struct srcimp **rsrcimp);
/* return srcimp resource */
int (*put_srcimp)(struct srcimp_mgr *mgr, struct srcimp *srcimp);
int (*imap_add)(struct srcimp_mgr *mgr, struct imapper *entry);
int (*imap_delete)(struct srcimp_mgr *mgr, struct imapper *entry);
};
/* Constructor and destructor of SRC resource manager */
int src_mgr_create(struct hw *hw, struct src_mgr **rsrc_mgr);
int src_mgr_destroy(struct src_mgr *src_mgr);
/* Constructor and destructor of SRCIMP resource manager */
int srcimp_mgr_create(struct hw *hw, struct srcimp_mgr **rsrc_mgr);
int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr);
#endif /* CTSRC_H */
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