blender/intern/audaspace/jack/AUD_JackLibrary.cpp
Sergey Sharybin a4cf8b3779 Supress error message if dlopen for jack.so failed
This is mainly happening when there's no jack installed
in the system and no reason to cause general panic
messages in the terminal about this.
2013-05-07 15:49:23 +00:00

116 lines
2.7 KiB
C++

/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2013 Blender Foundation
*
* This file is part of AudaSpace.
*
* Audaspace 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; either version 2 of the License, or
* (at your option) any later version.
*
* AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file audaspace/jack/AUD_JacLibrary.cpp
* \ingroup audjack
*/
#define AUD_JACK_LIBRARY_IMPL
#include "AUD_JackLibrary.h"
#ifdef WITH_JACK_DYNLOAD
# include <dlfcn.h>
# include <stdio.h>
#endif
#ifdef WITH_JACK_DYNLOAD
static void *jack_handle = NULL;
#endif
static bool jack_supported = false;
void AUD_jack_init(void)
{
#ifdef WITH_JACK_DYNLOAD
jack_handle = dlopen("libjack.so", RTLD_LAZY);
if (!jack_handle) {
return;
}
# define JACK_SYMBOL(sym) \
{ \
char *error; \
*(void **) (&(AUD_##sym)) = dlsym(jack_handle, #sym); \
if ((error = dlerror()) != NULL) { \
fprintf(stderr, "%s\n", error); \
return; \
} \
} (void)0
dlerror(); /* Clear any existing error */
#else // WITH_JACK_DYNLOAD
# define JACK_SYMBOL(sym) AUD_##sym = sym
#endif // WITH_JACK_DYNLOAD
JACK_SYMBOL(jack_transport_query);
JACK_SYMBOL(jack_transport_locate);
JACK_SYMBOL(jack_transport_start);
JACK_SYMBOL(jack_transport_stop);
JACK_SYMBOL(jack_ringbuffer_reset);
JACK_SYMBOL(jack_ringbuffer_write);
JACK_SYMBOL(jack_ringbuffer_write_space);
JACK_SYMBOL(jack_ringbuffer_write_advance);
JACK_SYMBOL(jack_ringbuffer_read);
JACK_SYMBOL(jack_ringbuffer_create);
JACK_SYMBOL(jack_ringbuffer_free);
JACK_SYMBOL(jack_ringbuffer_read_space);
JACK_SYMBOL(jack_set_sync_callback);
JACK_SYMBOL(jack_port_get_buffer);
JACK_SYMBOL(jack_client_open);
JACK_SYMBOL(jack_set_process_callback);
JACK_SYMBOL(jack_on_shutdown);
JACK_SYMBOL(jack_port_register);
JACK_SYMBOL(jack_client_close);
JACK_SYMBOL(jack_get_sample_rate);
JACK_SYMBOL(jack_activate);
JACK_SYMBOL(jack_get_ports);
JACK_SYMBOL(jack_port_name);
JACK_SYMBOL(jack_connect);
jack_supported = true;
#undef JACK_SYMBOL
}
void AUD_jack_exit(void)
{
#ifdef WITH_JACK_DYNLOAD
if (jack_handle) {
dlclose(jack_handle);
}
#endif
jack_supported = false;
}
bool AUD_jack_supported(void)
{
return jack_supported;
}