2 This file is part of GNUnet
3 (C) 2013 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 * @file include/gnunet_microphone_lib.h
23 * @brief API to access an audio microphone; provides access to hardware microphones
24 * @author Simon Dieterle
25 * @author Andreas Fuchs
26 * @author Christian Grothoff
28 #ifndef GNUNET_MICROPHONE_SERVICE_H
29 #define GNUNET_MICROPHONE_SERVICE_H
34 #if 0 /* keep Emacsens' auto-indent happy */
40 * Process recorded audio data.
43 * @param data_size number of bytes in @a data
44 * @param data audio data to play
46 typedef void (*GNUNET_MICROPHONE_RecordedDataCallback)(void *cls,
51 * Enable a microphone.
54 * @param rdc function to call with recorded data
55 * @param rdc_cls closure for @a dc
57 typedef void (*GNUNET_MICROPHONE_EnableCallback)(void *cls,
58 GNUNET_MICROPHONE_RecordedDataCallback rdc,
62 * Function that disables a microphone.
66 typedef void (*GNUNET_MICROPHONE_DisableCallback)(void *cls);
69 * Function to destroy a microphone.
73 typedef void (*GNUNET_MICROPHONE_DestroyCallback)(void *cls);
77 * A microphone is a device that can play or record audio data.
79 struct GNUNET_MICROPHONE_Handle
83 * Turn on the microphone.
85 GNUNET_MICROPHONE_EnableCallback enable_microphone;
88 * Turn the microphone off.
90 GNUNET_MICROPHONE_DisableCallback disable_microphone;
93 * Destroy the microphone. Called by #GNUNET_MICROPHONE_destroy.
95 GNUNET_MICROPHONE_DestroyCallback destroy_microphone;
98 * Closure for the callbacks.
106 * Create a microphone that corresponds to the microphone hardware
109 * @param cfg configuration to use
110 * @return NULL on error
112 struct GNUNET_MICROPHONE_Handle *
113 GNUNET_MICROPHONE_create_from_hardware (const struct GNUNET_CONFIGURATION_Handle *cfg);
117 * Destroy a microphone.
119 * @param microphone microphone to destroy
122 GNUNET_MICROPHONE_destroy (struct GNUNET_MICROPHONE_Handle *microphone);
125 #if 0 /* keep Emacsens' auto-indent happy */
133 /* end of gnunet_microphone_lib.h */