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/*
Copyright (C) 2010 Andrey Nazarov
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; either version 2 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 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "shared/shared.h"
#include "system/system.h"
#include "common/cvar.h"
#include "common/common.h"
#include "common/files.h"
#include "dynamic.h"
#include <AL/alc.h>
#define QALC_IMP \
QAL(LPALCCREATECONTEXT, alcCreateContext); \
QAL(LPALCMAKECONTEXTCURRENT, alcMakeContextCurrent); \
QAL(LPALCPROCESSCONTEXT, alcProcessContext); \
QAL(LPALCSUSPENDCONTEXT, alcSuspendContext); \
QAL(LPALCDESTROYCONTEXT, alcDestroyContext); \
QAL(LPALCGETCURRENTCONTEXT, alcGetCurrentContext); \
QAL(LPALCGETCONTEXTSDEVICE, alcGetContextsDevice); \
QAL(LPALCOPENDEVICE, alcOpenDevice); \
QAL(LPALCCLOSEDEVICE, alcCloseDevice); \
QAL(LPALCGETERROR, alcGetError); \
QAL(LPALCISEXTENSIONPRESENT, alcIsExtensionPresent); \
QAL(LPALCGETPROCADDRESS, alcGetProcAddress); \
QAL(LPALCGETENUMVALUE, alcGetEnumValue); \
QAL(LPALCGETSTRING, alcGetString); \
QAL(LPALCGETINTEGERV, alcGetIntegerv); \
QAL(LPALCCAPTUREOPENDEVICE, alcCaptureOpenDevice); \
QAL(LPALCCAPTURECLOSEDEVICE, alcCaptureCloseDevice); \
QAL(LPALCCAPTURESTART, alcCaptureStart); \
QAL(LPALCCAPTURESTOP, alcCaptureStop); \
QAL(LPALCCAPTURESAMPLES, alcCaptureSamples);
static cvar_t *al_driver;
static cvar_t *al_device;
static void *handle;
static ALCdevice *device;
static ALCcontext *context;
#define QAL(type, func) static type q##func
QALC_IMP
#undef QAL
#define QAL(type, func) type q##func
QAL_IMP
#undef QAL
void QAL_Shutdown(void)
{
if (context) {
qalcMakeContextCurrent(NULL);
qalcDestroyContext(context);
context = NULL;
}
if (device) {
qalcCloseDevice(device);
device = NULL;
}
#define QAL(type, func) q##func = NULL
QALC_IMP
QAL_IMP
#undef QAL
if (handle) {
Sys_FreeLibrary(handle);
handle = NULL;
}
if (al_driver)
al_driver->flags &= ~CVAR_SOUND;
if (al_device)
al_device->flags &= ~CVAR_SOUND;
}
qboolean QAL_Init(void)
{
al_driver = Cvar_Get("al_driver", LIBAL, 0);
al_device = Cvar_Get("al_device", "", 0);
// don't allow absolute or relative paths
FS_SanitizeFilenameVariable(al_driver);
Sys_LoadLibrary(al_driver->string, NULL, &handle);
if (!handle) {
return qfalse;
}
#define QAL(type, func) if ((q##func = Sys_GetProcAddress(handle, #func)) == NULL) goto fail;
QALC_IMP
QAL_IMP
#undef QAL
device = qalcOpenDevice(al_device->string[0] ? al_device->string : NULL);
if (!device) {
Com_SetLastError(va("alcOpenDevice(%s) failed", al_device->string));
goto fail;
}
context = qalcCreateContext(device, NULL);
if (!context) {
Com_SetLastError("alcCreateContext failed");
goto fail;
}
if (!qalcMakeContextCurrent(context)) {
Com_SetLastError("alcMakeContextCurrent failed");
goto fail;
}
al_driver->flags |= CVAR_SOUND;
al_device->flags |= CVAR_SOUND;
return qtrue;
fail:
QAL_Shutdown();
return qfalse;
}
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