raze-gles/source/audiolib/src/drivers.cpp
2018-10-25 23:33:14 +00:00

109 lines
3.6 KiB
C++

/*
Copyright (C) 2009 Jonathon Fowler <jf@jonof.id.au>
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.
*/
/**
* Abstraction layer for hiding the various supported sound devices
* behind a common and opaque interface called on by MultiVoc.
*/
#include "drivers.h"
#include "driver_nosound.h"
#if defined MIXERTYPEWIN
# include "driver_directsound.h"
#elif defined MIXERTYPESDL
# include "driver_sdl.h"
#endif
int32_t ASS_SoundDriver = -1;
#define UNSUPPORTED { 0,0,0,0,0,0,0,0, },
static struct
{
int32_t (*GetError)(void);
const char *(*ErrorString)(int32_t);
int32_t (*Init)(int32_t *, int32_t *, void *);
void (*Shutdown)(void);
int32_t (*BeginPlayback)(char *, int32_t, int32_t, void (*)(void));
void (*StopPlayback)(void);
void (*Lock)(void);
void (*Unlock)(void);
} SoundDrivers[ASS_NumSoundCards] = {
// Everyone gets the "no sound" driver
{
NoSoundDrv_GetError, NoSoundDrv_ErrorString, NoSoundDrv_PCM_Init, NoSoundDrv_PCM_Shutdown,
NoSoundDrv_PCM_BeginPlayback, NoSoundDrv_PCM_StopPlayback, NoSoundDrv_PCM_Lock, NoSoundDrv_PCM_Unlock,
},
// Windows DirectSound
#if defined MIXERTYPEWIN
{
DirectSoundDrv_GetError, DirectSoundDrv_ErrorString, DirectSoundDrv_PCM_Init, DirectSoundDrv_PCM_Shutdown,
DirectSoundDrv_PCM_BeginPlayback, DirectSoundDrv_PCM_StopPlayback, DirectSoundDrv_PCM_Lock,
DirectSoundDrv_PCM_Unlock,
},
// Simple DirectMedia Layer
#elif defined MIXERTYPESDL
{
SDLDrv_GetError, SDLDrv_ErrorString, SDLDrv_PCM_Init, SDLDrv_PCM_Shutdown,
SDLDrv_PCM_BeginPlayback, SDLDrv_PCM_StopPlayback, SDLDrv_PCM_Lock, SDLDrv_PCM_Unlock,
},
#endif
};
int32_t SoundDriver_IsSupported(int32_t driver) { return (SoundDrivers[driver].GetError != 0); }
int32_t SoundDriver_GetError(void)
{
return SoundDriver_IsSupported(ASS_SoundDriver) ? SoundDrivers[ASS_SoundDriver].GetError() : -1;
}
const char * SoundDriver_ErrorString( int32_t ErrorNumber )
{
if (ASS_SoundDriver < 0 || ASS_SoundDriver >= ASS_NumSoundCards)
return "No sound driver selected.";
if (!SoundDriver_IsSupported(ASS_SoundDriver))
return "Unsupported sound driver selected.";
return SoundDrivers[ASS_SoundDriver].ErrorString(ErrorNumber);
}
int32_t SoundDriver_Init(int32_t *mixrate, int32_t *numchannels, void *initdata)
{
return SoundDrivers[ASS_SoundDriver].Init(mixrate, numchannels, initdata);
}
void SoundDriver_Shutdown(void) { SoundDrivers[ASS_SoundDriver].Shutdown(); }
int32_t SoundDriver_BeginPlayback(char *BufferStart, int32_t BufferSize, int32_t NumDivisions,
void (*CallBackFunc)(void))
{
return SoundDrivers[ASS_SoundDriver].BeginPlayback(BufferStart, BufferSize, NumDivisions, CallBackFunc);
}
void SoundDriver_StopPlayback(void) { SoundDrivers[ASS_SoundDriver].StopPlayback(); }
void SoundDriver_Lock(void) { SoundDrivers[ASS_SoundDriver].Lock(); }
void SoundDriver_Unlock(void) { SoundDrivers[ASS_SoundDriver].Unlock(); }