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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1999-2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* This header file defines the public interfaces for the audio mixer
* sample rate conversion routines. Only the audio mixer and sample rate
* conversion routines may include this header file.
*
* CAUTION: This header file has not gone through a formal review process.
* Thus its commitment level is very low and may change or be removed
* at any time.
*/
#ifndef _SYS_AUDIO_SRC_H
#define _SYS_AUDIO_SRC_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _KERNEL
#define AM_SRC_VERSION AM_SRC_VERSION2
#define AM_SRC_VERSION2 2
/*
* The handle used by the mixer and the sample rate conversion routine.
*/
typedef struct src_handle *srchdl_t;
/*
* am_ad_src_entry_t - Audio Driver sample rate conversion routines
*/
struct am_ad_src_entry {
int ad_version;
size_t (*ad_src_init)(srchdl_t handle, int dir);
void (*ad_src_exit)(srchdl_t handle, int dir);
int (*ad_src_update)(srchdl_t handle,
audio_prinfo_t *ch_prinfo,
audio_prinfo_t *hw_prinfo,
void *src_info, int dir);
int (*ad_src_adjust)(srchdl_t handle, int dir,
int samples);
int *(*ad_src_convert)(srchdl_t handle, int channels,
int dir, int *src, int *ptr1, int *ptr2,
int *samples);
size_t (*ad_src_size)(srchdl_t handle, audio_prinfo_t *prinfo,
int dir, int samples, int hw_channels);
};
typedef struct am_ad_src_entry am_ad_src_entry_t;
/*
* am_ad_sample_rates_t - supported sample rates
*/
struct am_ad_sample_rates {
int ad_limits; /* 0 if sample rates not limits */
uint_t *ad_srs; /* NULL term. list of sample rates */
};
typedef struct am_ad_sample_rates am_ad_sample_rates_t;
/* am_ad_ample_rates.ad_limits */
#define MIXER_SRS_FLAG_SR_NOT_LIMITS 0x00000000u
/* samp rates not limits */
#define MIXER_SRS_FLAG_SR_LIMITS MIXER_SR_LIMITS
/* samp rates set limits */
/*
* Audio Mixer Audio Driver Miscellaneous Routines
*/
void *am_get_src_data(srchdl_t handle, int dir);
void am_set_src_data(srchdl_t handle, int dir, void *data);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_AUDIO_SRC_H */
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