/usr/include/lv2dynparam1/lv2dynparam/audiolock.h is in liblv2dynparam1-dev 2-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | /* -*- Mode: C ; c-basic-offset: 2 -*- */
/*****************************************************************************
*
* This file is part of lv2dynparam libraries
*
* Copyright (C) 2006,2007,2008,2009 Nedko Arnaudov <nedko@arnaudov.name>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*****************************************************************************/
/* For supporting philosophy look at article at
* http://nedko.arnaudov.name/wiki/moin.cgi/Accessing_data_from_audio_process_thread_and_UI_thread */
#ifndef AUDIOLOCK_H__E7FF7044_126C_402E_81C6_B6E17A046295__INCLUDED
#define AUDIOLOCK_H__E7FF7044_126C_402E_81C6_B6E17A046295__INCLUDED
typedef struct _audiolock_handle { int unused; } * audiolock_handle;
#define AUDIOLOCK_HANDLE_INVALID_VALUE NULL
/* Creates lock implementing optimistic approach.
*
* Returns AUDIOLOCK_HANDLE_INVALID_VALUE in case of failure.
*/
audiolock_handle audiolock_create_optimistic();
/* Creates lock implementing pessimistic approach.
*
* Returns AUDIOLOCK_HANDLE_INVALID_VALUE in case of failure.
*/
audiolock_handle audiolock_create_pessimistic();
/* Creates lock implementing "Not time critical UI <-> audio thread data
* transfer" approach.
*
* Returns AUDIOLOCK_HANDLE_INVALID_VALUE in case of failure.
*/
audiolock_handle audiolock_create_slow();
/* Returns zero if lock is owned by UI thread.
* For pessimistc and optimistic audiolocks always returns non-zero
*/
int audiolock_enter_audio(audiolock_handle lock);
void audiolock_leave_audio(audiolock_handle lock);
void audiolock_enter_ui(audiolock_handle lock);
void audiolock_leave_ui(audiolock_handle lock);
void audiolock_destroy(audiolock_handle lock);
#endif /* #ifndef AUDIOLOCK_H__E7FF7044_126C_402E_81C6_B6E17A046295__INCLUDED */
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