Alc/backends/loopback.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 2011 by Chris Robinson
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  *  Boston, MA  02111-1307, USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include "alMain.h"
  25 #include "AL/al.h"
  26 #include "AL/alc.h"
  27
  28
  29 static ALCenum loopback_open_playback(ALCdevice *device, const ALCchar *deviceName)
  30 {
  31     device->DeviceName = strdup(deviceName);
  32     return ALC_NO_ERROR;
  33 }
  34
  35 static void loopback_close_playback(ALCdevice *device)
  36 {
  37     (void)device;
  38 }
  39
  40 static ALCboolean loopback_reset_playback(ALCdevice *device)
  41 {
  42     SetDefaultWFXChannelOrder(device);
  43     return ALC_TRUE;
  44 }
  45
  46 static ALCboolean loopback_start_playback(ALCdevice *device)
  47 {
  48     return ALC_TRUE;
  49     (void)device;
  50 }
  51
  52 static void loopback_stop_playback(ALCdevice *device)
  53 {
  54     (void)device;
  55 }
  56
  57
  58 static ALint64 loopback_get_latency(ALCdevice *device)
  59 {
  60     (void)device;
  61     return 0;
  62 }
  63
  64
  65 static const BackendFuncs loopback_funcs = {
  66     loopback_open_playback,
  67     loopback_close_playback,
  68     loopback_reset_playback,
  69     loopback_start_playback,
  70     loopback_stop_playback,
  71     NULL,
  72     NULL,
  73     NULL,
  74     NULL,
  75     NULL,
  76     NULL,
  77     ALCdevice_LockDefault,
  78     ALCdevice_UnlockDefault,
  79     loopback_get_latency
  80 };
  81
  82 ALCboolean alc_loopback_init(BackendFuncs *func_list)
  83 {
  84     *func_list = loopback_funcs;
  85     return ALC_TRUE;
  86 }
  87
  88 void alc_loopback_deinit(void)
  89 {
  90 }
  91
  92 void alc_loopback_probe(enum DevProbe type)
  93 {
  94     (void)type;
  95 }