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-rw-r--r--Alc/backends/null.c220
1 files changed, 0 insertions, 220 deletions
diff --git a/Alc/backends/null.c b/Alc/backends/null.c
deleted file mode 100644
index d1c110e8..00000000
--- a/Alc/backends/null.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/**
- * OpenAL cross platform audio library
- * Copyright (C) 2010 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>
-#ifdef HAVE_WINDOWS_H
-#include <windows.h>
-#endif
-
-#include "alMain.h"
-#include "alu.h"
-#include "threads.h"
-#include "compat.h"
-
-#include "backends/base.h"
-
-
-typedef struct ALCnullBackend {
- DERIVE_FROM_TYPE(ALCbackend);
-
- ATOMIC(int) killNow;
- althrd_t thread;
-} ALCnullBackend;
-
-static int ALCnullBackend_mixerProc(void *ptr);
-
-static void ALCnullBackend_Construct(ALCnullBackend *self, ALCdevice *device);
-static DECLARE_FORWARD(ALCnullBackend, ALCbackend, void, Destruct)
-static ALCenum ALCnullBackend_open(ALCnullBackend *self, const ALCchar *name);
-static ALCboolean ALCnullBackend_reset(ALCnullBackend *self);
-static ALCboolean ALCnullBackend_start(ALCnullBackend *self);
-static void ALCnullBackend_stop(ALCnullBackend *self);
-static DECLARE_FORWARD2(ALCnullBackend, ALCbackend, ALCenum, captureSamples, void*, ALCuint)
-static DECLARE_FORWARD(ALCnullBackend, ALCbackend, ALCuint, availableSamples)
-static DECLARE_FORWARD(ALCnullBackend, ALCbackend, ClockLatency, getClockLatency)
-static DECLARE_FORWARD(ALCnullBackend, ALCbackend, void, lock)
-static DECLARE_FORWARD(ALCnullBackend, ALCbackend, void, unlock)
-DECLARE_DEFAULT_ALLOCATORS(ALCnullBackend)
-
-DEFINE_ALCBACKEND_VTABLE(ALCnullBackend);
-
-
-static const ALCchar nullDevice[] = "No Output";
-
-
-static void ALCnullBackend_Construct(ALCnullBackend *self, ALCdevice *device)
-{
- ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device);
- SET_VTABLE2(ALCnullBackend, ALCbackend, self);
-
- ATOMIC_INIT(&self->killNow, AL_TRUE);
-}
-
-
-static int ALCnullBackend_mixerProc(void *ptr)
-{
- ALCnullBackend *self = (ALCnullBackend*)ptr;
- ALCdevice *device = STATIC_CAST(ALCbackend, self)->mDevice;
- struct timespec now, start;
- ALuint64 avail, done;
- const long restTime = (long)((ALuint64)device->UpdateSize * 1000000000 /
- device->Frequency / 2);
-
- SetRTPriority();
- althrd_setname(althrd_current(), MIXER_THREAD_NAME);
-
- done = 0;
- if(altimespec_get(&start, AL_TIME_UTC) != AL_TIME_UTC)
- {
- ERR("Failed to get starting time\n");
- return 1;
- }
- while(!ATOMIC_LOAD(&self->killNow, almemory_order_acquire) &&
- ATOMIC_LOAD(&device->Connected, almemory_order_acquire))
- {
- if(altimespec_get(&now, AL_TIME_UTC) != AL_TIME_UTC)
- {
- ERR("Failed to get current time\n");
- return 1;
- }
-
- avail = (now.tv_sec - start.tv_sec) * device->Frequency;
- avail += (ALint64)(now.tv_nsec - start.tv_nsec) * device->Frequency / 1000000000;
- if(avail < done)
- {
- /* Oops, time skipped backwards. Reset the number of samples done
- * with one update available since we (likely) just came back from
- * sleeping. */
- done = avail - device->UpdateSize;
- }
-
- if(avail-done < device->UpdateSize)
- al_nssleep(restTime);
- else while(avail-done >= device->UpdateSize)
- {
- ALCnullBackend_lock(self);
- aluMixData(device, NULL, device->UpdateSize);
- ALCnullBackend_unlock(self);
- done += device->UpdateSize;
- }
- }
-
- return 0;
-}
-
-
-static ALCenum ALCnullBackend_open(ALCnullBackend *self, const ALCchar *name)
-{
- ALCdevice *device;
-
- if(!name)
- name = nullDevice;
- else if(strcmp(name, nullDevice) != 0)
- return ALC_INVALID_VALUE;
-
- device = STATIC_CAST(ALCbackend, self)->mDevice;
- alstr_copy_cstr(&device->DeviceName, name);
-
- return ALC_NO_ERROR;
-}
-
-static ALCboolean ALCnullBackend_reset(ALCnullBackend *self)
-{
- SetDefaultWFXChannelOrder(STATIC_CAST(ALCbackend, self)->mDevice);
- return ALC_TRUE;
-}
-
-static ALCboolean ALCnullBackend_start(ALCnullBackend *self)
-{
- ATOMIC_STORE(&self->killNow, AL_FALSE, almemory_order_release);
- if(althrd_create(&self->thread, ALCnullBackend_mixerProc, self) != althrd_success)
- return ALC_FALSE;
- return ALC_TRUE;
-}
-
-static void ALCnullBackend_stop(ALCnullBackend *self)
-{
- int res;
-
- if(ATOMIC_EXCHANGE(&self->killNow, AL_TRUE, almemory_order_acq_rel))
- return;
- althrd_join(self->thread, &res);
-}
-
-
-typedef struct ALCnullBackendFactory {
- DERIVE_FROM_TYPE(ALCbackendFactory);
-} ALCnullBackendFactory;
-#define ALCNULLBACKENDFACTORY_INITIALIZER { { GET_VTABLE2(ALCnullBackendFactory, ALCbackendFactory) } }
-
-ALCbackendFactory *ALCnullBackendFactory_getFactory(void);
-
-static ALCboolean ALCnullBackendFactory_init(ALCnullBackendFactory *self);
-static DECLARE_FORWARD(ALCnullBackendFactory, ALCbackendFactory, void, deinit)
-static ALCboolean ALCnullBackendFactory_querySupport(ALCnullBackendFactory *self, ALCbackend_Type type);
-static void ALCnullBackendFactory_probe(ALCnullBackendFactory *self, enum DevProbe type, al_string *outnames);
-static ALCbackend* ALCnullBackendFactory_createBackend(ALCnullBackendFactory *self, ALCdevice *device, ALCbackend_Type type);
-DEFINE_ALCBACKENDFACTORY_VTABLE(ALCnullBackendFactory);
-
-
-ALCbackendFactory *ALCnullBackendFactory_getFactory(void)
-{
- static ALCnullBackendFactory factory = ALCNULLBACKENDFACTORY_INITIALIZER;
- return STATIC_CAST(ALCbackendFactory, &factory);
-}
-
-
-static ALCboolean ALCnullBackendFactory_init(ALCnullBackendFactory* UNUSED(self))
-{
- return ALC_TRUE;
-}
-
-static ALCboolean ALCnullBackendFactory_querySupport(ALCnullBackendFactory* UNUSED(self), ALCbackend_Type type)
-{
- if(type == ALCbackend_Playback)
- return ALC_TRUE;
- return ALC_FALSE;
-}
-
-static void ALCnullBackendFactory_probe(ALCnullBackendFactory* UNUSED(self), enum DevProbe type, al_string *outnames)
-{
- switch(type)
- {
- case ALL_DEVICE_PROBE:
- case CAPTURE_DEVICE_PROBE:
- alstr_append_range(outnames, nullDevice, nullDevice+sizeof(nullDevice));
- break;
- }
-}
-
-static ALCbackend* ALCnullBackendFactory_createBackend(ALCnullBackendFactory* UNUSED(self), ALCdevice *device, ALCbackend_Type type)
-{
- if(type == ALCbackend_Playback)
- {
- ALCnullBackend *backend;
- NEW_OBJ(backend, ALCnullBackend)(device);
- if(!backend) return NULL;
- return STATIC_CAST(ALCbackend, backend);
- }
-
- return NULL;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-29 16:42:22 +0000