mirror of
https://gitee.com/openharmony/third_party_alsa-lib
synced 2024-11-22 23:20:11 +00:00
217 lines
7.3 KiB
C
217 lines
7.3 KiB
C
/**
|
|
* \file include/pcm_plugin.h
|
|
* \brief Common PCM plugin code
|
|
* \author Abramo Bagnara <abramo@alsa-project.org>
|
|
* \author Jaroslav Kysela <perex@perex.cz>
|
|
* \date 2000-2001
|
|
*
|
|
* Application interface library for the ALSA driver.
|
|
* See the \ref pcm_plugins page for more details.
|
|
*
|
|
* \warning Using of contents of this header file might be dangerous
|
|
* in the sense of compatibility reasons. The contents might be
|
|
* freely changed in future.
|
|
*/
|
|
/*
|
|
* This library is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as
|
|
* published by the Free Software Foundation; either version 2.1 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#ifndef __ALSA_PCM_PLUGIN_H
|
|
#define __ALSA_PCM_PLUGIN_H
|
|
|
|
/**
|
|
* \defgroup PCM_Plugins PCM Plugins
|
|
* \ingroup PCM
|
|
* See the \ref pcm_plugins page for more details.
|
|
* \{
|
|
*/
|
|
|
|
#define SND_PCM_PLUGIN_RATE_MIN 4000 /**< minimal rate for the rate plugin */
|
|
#define SND_PCM_PLUGIN_RATE_MAX 768000 /**< maximal rate for the rate plugin */
|
|
|
|
/* ROUTE_FLOAT should be set to 0 for machines without FP unit - like iPAQ */
|
|
#ifdef HAVE_SOFT_FLOAT
|
|
#define SND_PCM_PLUGIN_ROUTE_FLOAT 0 /**< use integers for route plugin */
|
|
#else
|
|
#define SND_PCM_PLUGIN_ROUTE_FLOAT 1 /**< use floats for route plugin */
|
|
#endif
|
|
|
|
#define SND_PCM_PLUGIN_ROUTE_RESOLUTION 16 /**< integer resolution for route plugin */
|
|
|
|
#if SND_PCM_PLUGIN_ROUTE_FLOAT
|
|
/** route ttable entry type */
|
|
typedef float snd_pcm_route_ttable_entry_t;
|
|
#define SND_PCM_PLUGIN_ROUTE_HALF 0.5 /**< half value */
|
|
#define SND_PCM_PLUGIN_ROUTE_FULL 1.0 /**< full value */
|
|
#else
|
|
/** route ttable entry type */
|
|
typedef int snd_pcm_route_ttable_entry_t;
|
|
#define SND_PCM_PLUGIN_ROUTE_HALF (SND_PCM_PLUGIN_ROUTE_RESOLUTION / 2) /**< half value */
|
|
#define SND_PCM_PLUGIN_ROUTE_FULL SND_PCM_PLUGIN_ROUTE_RESOLUTION /**< full value */
|
|
#endif
|
|
|
|
/*
|
|
* Hardware plugin
|
|
*/
|
|
int snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
|
|
int card, int device, int subdevice,
|
|
snd_pcm_stream_t stream, int mode,
|
|
int mmap_emulation, int sync_ptr_ioctl);
|
|
int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root ATTRIBUTE_UNUSED, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Copy plugin
|
|
*/
|
|
int snd_pcm_copy_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_t *slave, int close_slave);
|
|
int _snd_pcm_copy_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Linear conversion plugin
|
|
*/
|
|
int snd_pcm_linear_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, snd_pcm_t *slave,
|
|
int close_slave);
|
|
int _snd_pcm_linear_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Linear<->Float conversion plugin
|
|
*/
|
|
int snd_pcm_lfloat_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, snd_pcm_t *slave,
|
|
int close_slave);
|
|
int _snd_pcm_lfloat_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Linear<->mu-Law conversion plugin
|
|
*/
|
|
int snd_pcm_mulaw_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, snd_pcm_t *slave,
|
|
int close_slave);
|
|
int _snd_pcm_mulaw_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Linear<->a-Law conversion plugin
|
|
*/
|
|
int snd_pcm_alaw_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, snd_pcm_t *slave,
|
|
int close_slave);
|
|
int _snd_pcm_alaw_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Linear<->Ima-ADPCM conversion plugin
|
|
*/
|
|
int snd_pcm_adpcm_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, snd_pcm_t *slave,
|
|
int close_slave);
|
|
int _snd_pcm_adpcm_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* IEC958 subframe conversion plugin
|
|
*/
|
|
int snd_pcm_iec958_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, snd_pcm_t *slave,
|
|
int close_slave,
|
|
const unsigned char *status_bits,
|
|
const unsigned char *preamble_vals,
|
|
int hdmi_mode);
|
|
int _snd_pcm_iec958_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Route plugin for linear formats
|
|
*/
|
|
int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable,
|
|
unsigned int tt_csize, unsigned int tt_ssize,
|
|
unsigned int *tt_cused, unsigned int *tt_sused,
|
|
int schannels);
|
|
int snd_pcm_route_determine_ttable(snd_config_t *tt,
|
|
unsigned int *tt_csize,
|
|
unsigned int *tt_ssize);
|
|
int snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, int schannels,
|
|
snd_pcm_route_ttable_entry_t *ttable,
|
|
unsigned int tt_ssize,
|
|
unsigned int tt_cused, unsigned int tt_sused,
|
|
snd_pcm_t *slave, int close_slave);
|
|
int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Rate plugin for linear formats
|
|
*/
|
|
int snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_format_t sformat, unsigned int srate,
|
|
const snd_config_t *converter,
|
|
snd_pcm_t *slave, int close_slave);
|
|
int _snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Hooks plugin
|
|
*/
|
|
int snd_pcm_hooks_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_pcm_t *slave, int close_slave);
|
|
int _snd_pcm_hooks_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* LADSPA plugin
|
|
*/
|
|
int snd_pcm_ladspa_open(snd_pcm_t **pcmp, const char *name,
|
|
const char *ladspa_path,
|
|
unsigned int channels,
|
|
snd_config_t *ladspa_pplugins,
|
|
snd_config_t *ladspa_cplugins,
|
|
snd_pcm_t *slave, int close_slave);
|
|
int _snd_pcm_ladspa_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
/*
|
|
* Jack plugin
|
|
*/
|
|
int snd_pcm_jack_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *playback_conf,
|
|
snd_config_t *capture_conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
int _snd_pcm_jack_open(snd_pcm_t **pcmp, const char *name,
|
|
snd_config_t *root, snd_config_t *conf,
|
|
snd_pcm_stream_t stream, int mode);
|
|
|
|
|
|
/** \} */
|
|
|
|
#endif /* __ALSA_PCM_PLUGIN_H */
|