--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/alsa/pcm_plugin.h	Tue Mar 18 17:55:14 2025 -0400
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+/**
+ * \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);
+
+/*
+ *  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 */