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comparison CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/alsa/pcm_plugin.h @ 69:33d812a61356

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
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67:0e9998148a16 69:33d812a61356
1 /**
2 * \file include/pcm_plugin.h
3 * \brief Common PCM plugin code
4 * \author Abramo Bagnara <abramo@alsa-project.org>
5 * \author Jaroslav Kysela <perex@perex.cz>
6 * \date 2000-2001
7 *
8 * Application interface library for the ALSA driver.
9 * See the \ref pcm_plugins page for more details.
10 *
11 * \warning Using of contents of this header file might be dangerous
12 * in the sense of compatibility reasons. The contents might be
13 * freely changed in future.
14 */
15 /*
16 * This library is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU Lesser General Public License as
18 * published by the Free Software Foundation; either version 2.1 of
19 * the License, or (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU Lesser General Public License for more details.
25 *
26 * You should have received a copy of the GNU Lesser General Public
27 * License along with this library; if not, write to the Free Software
28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 *
30 */
31
32 #ifndef __ALSA_PCM_PLUGIN_H
33 #define __ALSA_PCM_PLUGIN_H
34
35 /**
36 * \defgroup PCM_Plugins PCM Plugins
37 * \ingroup PCM
38 * See the \ref pcm_plugins page for more details.
39 * \{
40 */
41
42 #define SND_PCM_PLUGIN_RATE_MIN 4000 /**< minimal rate for the rate plugin */
43 #define SND_PCM_PLUGIN_RATE_MAX 768000 /**< maximal rate for the rate plugin */
44
45 /* ROUTE_FLOAT should be set to 0 for machines without FP unit - like iPAQ */
46 #ifdef HAVE_SOFT_FLOAT
47 #define SND_PCM_PLUGIN_ROUTE_FLOAT 0 /**< use integers for route plugin */
48 #else
49 #define SND_PCM_PLUGIN_ROUTE_FLOAT 1 /**< use floats for route plugin */
50 #endif
51
52 #define SND_PCM_PLUGIN_ROUTE_RESOLUTION 16 /**< integer resolution for route plugin */
53
54 #if SND_PCM_PLUGIN_ROUTE_FLOAT
55 /** route ttable entry type */
56 typedef float snd_pcm_route_ttable_entry_t;
57 #define SND_PCM_PLUGIN_ROUTE_HALF 0.5 /**< half value */
58 #define SND_PCM_PLUGIN_ROUTE_FULL 1.0 /**< full value */
59 #else
60 /** route ttable entry type */
61 typedef int snd_pcm_route_ttable_entry_t;
62 #define SND_PCM_PLUGIN_ROUTE_HALF (SND_PCM_PLUGIN_ROUTE_RESOLUTION / 2) /**< half value */
63 #define SND_PCM_PLUGIN_ROUTE_FULL SND_PCM_PLUGIN_ROUTE_RESOLUTION /**< full value */
64 #endif
65
66 /*
67 * Hardware plugin
68 */
69 int snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
70 int card, int device, int subdevice,
71 snd_pcm_stream_t stream, int mode,
72 int mmap_emulation, int sync_ptr_ioctl);
73 int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
74 snd_config_t *root ATTRIBUTE_UNUSED, snd_config_t *conf,
75 snd_pcm_stream_t stream, int mode);
76
77 /*
78 * Copy plugin
79 */
80 int snd_pcm_copy_open(snd_pcm_t **pcmp, const char *name,
81 snd_pcm_t *slave, int close_slave);
82 int _snd_pcm_copy_open(snd_pcm_t **pcmp, const char *name,
83 snd_config_t *root, snd_config_t *conf,
84 snd_pcm_stream_t stream, int mode);
85
86 /*
87 * Linear conversion plugin
88 */
89 int snd_pcm_linear_open(snd_pcm_t **pcmp, const char *name,
90 snd_pcm_format_t sformat, snd_pcm_t *slave,
91 int close_slave);
92 int _snd_pcm_linear_open(snd_pcm_t **pcmp, const char *name,
93 snd_config_t *root, snd_config_t *conf,
94 snd_pcm_stream_t stream, int mode);
95
96 /*
97 * Linear<->Float conversion plugin
98 */
99 int snd_pcm_lfloat_open(snd_pcm_t **pcmp, const char *name,
100 snd_pcm_format_t sformat, snd_pcm_t *slave,
101 int close_slave);
102 int _snd_pcm_lfloat_open(snd_pcm_t **pcmp, const char *name,
103 snd_config_t *root, snd_config_t *conf,
104 snd_pcm_stream_t stream, int mode);
105
106 /*
107 * Linear<->mu-Law conversion plugin
108 */
109 int snd_pcm_mulaw_open(snd_pcm_t **pcmp, const char *name,
110 snd_pcm_format_t sformat, snd_pcm_t *slave,
111 int close_slave);
112 int _snd_pcm_mulaw_open(snd_pcm_t **pcmp, const char *name,
113 snd_config_t *root, snd_config_t *conf,
114 snd_pcm_stream_t stream, int mode);
115
116 /*
117 * Linear<->a-Law conversion plugin
118 */
119 int snd_pcm_alaw_open(snd_pcm_t **pcmp, const char *name,
120 snd_pcm_format_t sformat, snd_pcm_t *slave,
121 int close_slave);
122 int _snd_pcm_alaw_open(snd_pcm_t **pcmp, const char *name,
123 snd_config_t *root, snd_config_t *conf,
124 snd_pcm_stream_t stream, int mode);
125
126 /*
127 * Linear<->Ima-ADPCM conversion plugin
128 */
129 int snd_pcm_adpcm_open(snd_pcm_t **pcmp, const char *name,
130 snd_pcm_format_t sformat, snd_pcm_t *slave,
131 int close_slave);
132 int _snd_pcm_adpcm_open(snd_pcm_t **pcmp, const char *name,
133 snd_config_t *root, snd_config_t *conf,
134 snd_pcm_stream_t stream, int mode);
135
136 /*
137 * Route plugin for linear formats
138 */
139 int snd_pcm_route_load_ttable(snd_config_t *tt, snd_pcm_route_ttable_entry_t *ttable,
140 unsigned int tt_csize, unsigned int tt_ssize,
141 unsigned int *tt_cused, unsigned int *tt_sused,
142 int schannels);
143 int snd_pcm_route_determine_ttable(snd_config_t *tt,
144 unsigned int *tt_csize,
145 unsigned int *tt_ssize);
146 int snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
147 snd_pcm_format_t sformat, int schannels,
148 snd_pcm_route_ttable_entry_t *ttable,
149 unsigned int tt_ssize,
150 unsigned int tt_cused, unsigned int tt_sused,
151 snd_pcm_t *slave, int close_slave);
152 int _snd_pcm_route_open(snd_pcm_t **pcmp, const char *name,
153 snd_config_t *root, snd_config_t *conf,
154 snd_pcm_stream_t stream, int mode);
155
156 /*
157 * Rate plugin for linear formats
158 */
159 int snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
160 snd_pcm_format_t sformat, unsigned int srate,
161 const snd_config_t *converter,
162 snd_pcm_t *slave, int close_slave);
163 int _snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
164 snd_config_t *root, snd_config_t *conf,
165 snd_pcm_stream_t stream, int mode);
166
167 /*
168 * Hooks plugin
169 */
170 int snd_pcm_hooks_open(snd_pcm_t **pcmp, const char *name,
171 snd_pcm_t *slave, int close_slave);
172 int _snd_pcm_hooks_open(snd_pcm_t **pcmp, const char *name,
173 snd_config_t *root, snd_config_t *conf,
174 snd_pcm_stream_t stream, int mode);
175
176 /*
177 * LADSPA plugin
178 */
179 int snd_pcm_ladspa_open(snd_pcm_t **pcmp, const char *name,
180 const char *ladspa_path,
181 unsigned int channels,
182 snd_config_t *ladspa_pplugins,
183 snd_config_t *ladspa_cplugins,
184 snd_pcm_t *slave, int close_slave);
185 int _snd_pcm_ladspa_open(snd_pcm_t **pcmp, const char *name,
186 snd_config_t *root, snd_config_t *conf,
187 snd_pcm_stream_t stream, int mode);
188
189 /*
190 * Jack plugin
191 */
192 int snd_pcm_jack_open(snd_pcm_t **pcmp, const char *name,
193 snd_config_t *playback_conf,
194 snd_config_t *capture_conf,
195 snd_pcm_stream_t stream, int mode);
196 int _snd_pcm_jack_open(snd_pcm_t **pcmp, const char *name,
197 snd_config_t *root, snd_config_t *conf,
198 snd_pcm_stream_t stream, int mode);
199
200
201 /** \} */
202
203 #endif /* __ALSA_PCM_PLUGIN_H */