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200 lines
6.8 KiB
C
200 lines
6.8 KiB
C
/**
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* \file <alsa/pcm_plugin.h>
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* \brief Common PCM plugin code
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* \author Abramo Bagnara <abramo@alsa-project.org>
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* \author Jaroslav Kysela <perex@suse.cz>
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* \date 2000-2001
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*
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* Application interface library for the ALSA driver.
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* See the \ref pcm_plugins page for more details.
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*
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* \warning Using of contents of this header file might be dangerous
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* in the sense of compatibility reasons. The contents might be
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* freely changed in future.
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*
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __ALSA_PCM_PLUGIN_H
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/**
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* \defgroup PCM_Plugins PCM Plugins
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* \ingroup PCM
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* See the \ref pcm_plugins page for more details.
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* \{
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*/
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#define SND_PCM_PLUGIN_RATE_MIN 4000 /**< minimal rate for the rate plugin */
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#define SND_PCM_PLUGIN_RATE_MAX 192000 /**< maximal rate for the rate plugin */
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/* ROUTE_FLOAT should be set to 0 for machines without FP unit - like iPAQ */
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#ifdef HAVE_SOFT_FLOAT
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#define SND_PCM_PLUGIN_ROUTE_FLOAT 0 /**< use integers for route plugin */
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#else
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#define SND_PCM_PLUGIN_ROUTE_FLOAT 1 /**< use floats for route plugin */
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#endif
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#define SND_PCM_PLUGIN_ROUTE_RESOLUTION 16 /**< integer resolution for route plugin */
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#if SND_PCM_PLUGIN_ROUTE_FLOAT
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/** route ttable entry type */
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typedef float snd_pcm_route_ttable_entry_t;
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#define SND_PCM_PLUGIN_ROUTE_HALF 0.5 /**< half value */
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#define SND_PCM_PLUGIN_ROUTE_FULL 1.0 /**< full value */
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#else
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/** route ttable entry type */
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typedef int snd_pcm_route_ttable_entry_t;
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#define SND_PCM_PLUGIN_ROUTE_HALF (SND_PCM_PLUGIN_ROUTE_RESOLUTION / 2) /**< half value */
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#define SND_PCM_PLUGIN_ROUTE_FULL SND_PCM_PLUGIN_ROUTE_RESOLUTION /**< full value */
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#endif
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/*
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* Hardware plugin
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*/
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int snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
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int card, int device, int subdevice,
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snd_pcm_stream_t stream, int mode,
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int mmap_emulation, int sync_ptr_ioctl);
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int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root ATTRIBUTE_UNUSED, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Copy plugin
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*/
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int snd_pcm_copy_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_t *slave, int close_slave);
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int _snd_pcm_copy_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Linear conversion plugin
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*/
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int snd_pcm_linear_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_format_t sformat, snd_pcm_t *slave,
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int close_slave);
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int _snd_pcm_linear_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Linear<->Float conversion plugin
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*/
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int snd_pcm_lfloat_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_format_t sformat, snd_pcm_t *slave,
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int close_slave);
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int _snd_pcm_lfloat_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Linear<->mu-Law conversion plugin
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*/
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int snd_pcm_mulaw_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_format_t sformat, snd_pcm_t *slave,
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int close_slave);
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int _snd_pcm_mulaw_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Linear<->a-Law conversion plugin
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*/
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int snd_pcm_alaw_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_format_t sformat, snd_pcm_t *slave,
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int close_slave);
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int _snd_pcm_alaw_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Linear<->Ima-ADPCM conversion plugin
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*/
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int snd_pcm_adpcm_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_format_t sformat, snd_pcm_t *slave,
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int close_slave);
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int _snd_pcm_adpcm_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Route plugin for linear formats
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*/
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int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable,
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unsigned int tt_csize, unsigned int tt_ssize,
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unsigned int *tt_cused, unsigned int *tt_sused,
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int schannels);
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int snd_pcm_route_determine_ttable(snd_config_t *tt,
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unsigned int *tt_csize,
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unsigned int *tt_ssize);
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int snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_format_t sformat, int schannels,
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snd_pcm_route_ttable_entry_t *ttable,
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unsigned int tt_ssize,
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unsigned int tt_cused, unsigned int tt_sused,
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snd_pcm_t *slave, int close_slave);
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int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Rate plugin for linear formats
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*/
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int snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_format_t sformat, unsigned int srate,
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snd_pcm_t *slave, int close_slave);
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int _snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Hooks plugin
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*/
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int snd_pcm_hooks_open(snd_pcm_t **pcmp, const char *name,
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snd_pcm_t *slave, int close_slave);
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int _snd_pcm_hooks_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* LADSPA plugin
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*/
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int snd_pcm_ladspa_open(snd_pcm_t **pcmp, const char *name,
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const char *ladspa_path,
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snd_config_t *ladspa_pplugins,
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snd_config_t *ladspa_cplugins,
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snd_pcm_t *slave, int close_slave);
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int _snd_pcm_ladspa_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/*
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* Jack plugin
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*/
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int snd_pcm_jack_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *playback_conf,
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snd_config_t *capture_conf,
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snd_pcm_stream_t stream, int mode);
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int _snd_pcm_jack_open(snd_pcm_t **pcmp, const char *name,
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snd_config_t *root, snd_config_t *conf,
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snd_pcm_stream_t stream, int mode);
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/** \} */
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#endif /* __ALSA_PCM_PLUGIN_H */
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