6d4380a48c
This will also allow backends to better synchronize the tracked clock time with the device output latency, without necessarily needing to lock if the backend API can allow for it.
134 lines
4.3 KiB
C
134 lines
4.3 KiB
C
/**
|
|
* OpenAL cross platform audio library
|
|
* Copyright (C) 2011 by Chris Robinson
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
* Or go to http://www.gnu.org/copyleft/lgpl.html
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "alMain.h"
|
|
#include "alu.h"
|
|
|
|
#include "backends/base.h"
|
|
|
|
|
|
typedef struct ALCloopback {
|
|
DERIVE_FROM_TYPE(ALCbackend);
|
|
} ALCloopback;
|
|
|
|
static void ALCloopback_Construct(ALCloopback *self, ALCdevice *device);
|
|
static DECLARE_FORWARD(ALCloopback, ALCbackend, void, Destruct)
|
|
static ALCenum ALCloopback_open(ALCloopback *self, const ALCchar *name);
|
|
static void ALCloopback_close(ALCloopback *self);
|
|
static ALCboolean ALCloopback_reset(ALCloopback *self);
|
|
static ALCboolean ALCloopback_start(ALCloopback *self);
|
|
static void ALCloopback_stop(ALCloopback *self);
|
|
static DECLARE_FORWARD2(ALCloopback, ALCbackend, ALCenum, captureSamples, void*, ALCuint)
|
|
static DECLARE_FORWARD(ALCloopback, ALCbackend, ALCuint, availableSamples)
|
|
static DECLARE_FORWARD(ALCloopback, ALCbackend, ClockLatency, getClockLatency)
|
|
static DECLARE_FORWARD(ALCloopback, ALCbackend, void, lock)
|
|
static DECLARE_FORWARD(ALCloopback, ALCbackend, void, unlock)
|
|
DECLARE_DEFAULT_ALLOCATORS(ALCloopback)
|
|
DEFINE_ALCBACKEND_VTABLE(ALCloopback);
|
|
|
|
|
|
static void ALCloopback_Construct(ALCloopback *self, ALCdevice *device)
|
|
{
|
|
ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
|
|
SET_VTABLE2(ALCloopback, ALCbackend, self);
|
|
}
|
|
|
|
|
|
static ALCenum ALCloopback_open(ALCloopback *self, const ALCchar *name)
|
|
{
|
|
ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
|
|
|
|
al_string_copy_cstr(&device->DeviceName, name);
|
|
return ALC_NO_ERROR;
|
|
}
|
|
|
|
static void ALCloopback_close(ALCloopback* UNUSED(self))
|
|
{
|
|
}
|
|
|
|
static ALCboolean ALCloopback_reset(ALCloopback *self)
|
|
{
|
|
SetDefaultWFXChannelOrder(STATIC_CAST(ALCbackend, self)->mDevice);
|
|
return ALC_TRUE;
|
|
}
|
|
|
|
static ALCboolean ALCloopback_start(ALCloopback* UNUSED(self))
|
|
{
|
|
return ALC_TRUE;
|
|
}
|
|
|
|
static void ALCloopback_stop(ALCloopback* UNUSED(self))
|
|
{
|
|
}
|
|
|
|
|
|
typedef struct ALCloopbackFactory {
|
|
DERIVE_FROM_TYPE(ALCbackendFactory);
|
|
} ALCloopbackFactory;
|
|
#define ALCNULLBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCloopbackFactory, ALCbackendFactory) } }
|
|
|
|
ALCbackendFactory *ALCloopbackFactory_getFactory(void);
|
|
static ALCboolean ALCloopbackFactory_init(ALCloopbackFactory *self);
|
|
static DECLARE_FORWARD(ALCloopbackFactory, ALCbackendFactory, void, deinit)
|
|
static ALCboolean ALCloopbackFactory_querySupport(ALCloopbackFactory *self, ALCbackend_Type type);
|
|
static void ALCloopbackFactory_probe(ALCloopbackFactory *self, enum DevProbe type);
|
|
static ALCbackend* ALCloopbackFactory_createBackend(ALCloopbackFactory *self, ALCdevice *device, ALCbackend_Type type);
|
|
DEFINE_ALCBACKENDFACTORY_VTABLE(ALCloopbackFactory);
|
|
|
|
|
|
ALCbackendFactory *ALCloopbackFactory_getFactory(void)
|
|
{
|
|
static ALCloopbackFactory factory = ALCNULLBACKENDFACTORY_INITIALIZER;
|
|
return STATIC_CAST(ALCbackendFactory, &factory);
|
|
}
|
|
|
|
static ALCboolean ALCloopbackFactory_init(ALCloopbackFactory* UNUSED(self))
|
|
{
|
|
return ALC_TRUE;
|
|
}
|
|
|
|
static ALCboolean ALCloopbackFactory_querySupport(ALCloopbackFactory* UNUSED(self), ALCbackend_Type type)
|
|
{
|
|
if(type == ALCbackend_Loopback)
|
|
return ALC_TRUE;
|
|
return ALC_FALSE;
|
|
}
|
|
|
|
static void ALCloopbackFactory_probe(ALCloopbackFactory* UNUSED(self), enum DevProbe UNUSED(type))
|
|
{
|
|
}
|
|
|
|
static ALCbackend* ALCloopbackFactory_createBackend(ALCloopbackFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
|
|
{
|
|
if(type == ALCbackend_Loopback)
|
|
{
|
|
ALCloopback *backend;
|
|
NEW_OBJ(backend, ALCloopback)(device);
|
|
if(!backend) return NULL;
|
|
return STATIC_CAST(ALCbackend, backend);
|
|
}
|
|
|
|
return NULL;
|
|
}
|