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raze-gles/polymer/eduke32/source/jaudiolib/openal.c

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//-------------------------------------------------------------------------
/*
Copyright (C) 2008 - EDuke32 developers
This file is part of EDuke32
EDuke32 is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//-------------------------------------------------------------------------
#ifdef _WIN32
#include "dsound.h"
#endif
#include "baselayer.h"
#include "compat.h"
#define AL_NO_PROTOTYPES
#define ALC_NO_PROTOTYPES
#include <AL/al.h>
#include <AL/alc.h>
#include "openal.h"
// #include "_multivc.h"
ALCdevice * device=NULL;
ALCcontext * context=NULL;
char *ALdoing = NULL;
int AL_Error;
int bufsize;
int openal_disabled = 0;
typedef struct SD
{
ALuint buffers[16];
ALuint source;
ALenum format;
char loop;
char type;
int rate;
sounddef def;
int ready;
} sounddef1;
sounddef1 music;
#ifdef _WIN32
// Windows
static HMODULE hALDLL = NULL;
#else
#include <dlfcn.h>
static void *alhandle = NULL;
#endif
static char *aldriver = NULL;
static LPALGETSOURCEI balGetSourcei = NULL;
static LPALSOURCEF balSourcef = NULL;
static LPALSOURCEPLAY balSourcePlay = NULL;
static LPALSOURCEPAUSE balSourcePause = NULL;
static LPALCGETERROR balcGetError = NULL;
static LPALGETERROR balGetError = NULL;
static LPALBUFFERDATA balBufferData = NULL;
static LPALGENBUFFERS balGenBuffers = NULL;
static LPALGENSOURCES balGenSources = NULL;
static LPALSOURCEI balSourcei = NULL;
static LPALSOURCEQUEUEBUFFERS balSourceQueueBuffers = NULL;
static LPALSOURCESTOP balSourceStop = NULL;
static LPALSOURCEUNQUEUEBUFFERS balSourceUnqueueBuffers = NULL;
static LPALCMAKECONTEXTCURRENT balcMakeContextCurrent = NULL;
static LPALDELETESOURCES balDeleteSources = NULL;
static LPALDELETEBUFFERS balDeleteBuffers = NULL;
static LPALCDESTROYCONTEXT balcDestroyContext = NULL;
static LPALCCLOSEDEVICE balcCloseDevice = NULL;
static LPALCOPENDEVICE balcOpenDevice = NULL;
static LPALCCREATECONTEXT balcCreateContext = NULL;
static LPALGETSTRING balGetString = NULL;
static void * algetproc_(const char *s, int *err, int fatal)
{
void *t;
#if defined _WIN32
t = (void*)GetProcAddress(hALDLL,s);
#else
t = (void*)dlsym(alhandle,s);
#endif
if (!t && fatal)
{
initprintf("Failed to find %s in %s\n", s, aldriver);
*err = 1;
}
return t;
}
#define ALGETPROC(s) algetproc_(s,&err,1)
#define ALGETPROCSOFT(s) algetproc_(s,&err,0)
static int unloadaldriver(void)
{
#ifdef _WIN32
if (!hALDLL) return 0;
#endif
if (aldriver)
free(aldriver);
aldriver = NULL;
#ifdef _WIN32
if (hALDLL)
FreeLibrary(hALDLL);
hALDLL = NULL;
#else
if (alhandle)
dlclose(alhandle);
alhandle = NULL;
#endif
balGetSourcei = NULL;
balSourcef = NULL;
balSourcePlay = NULL;
balSourcePause = NULL;
balcGetError = NULL;
balGetError = NULL;
balBufferData = NULL;
balGenBuffers = NULL;
balGenSources = NULL;
balSourcei = NULL;
balSourceQueueBuffers = NULL;
balSourceStop = NULL;
balSourceUnqueueBuffers = NULL;
balDeleteSources = NULL;
balcMakeContextCurrent = NULL;
balDeleteSources = NULL;
balDeleteBuffers = NULL;
balcDestroyContext = NULL;
balcCloseDevice = NULL;
balcOpenDevice = NULL;
balcCreateContext = NULL;
balGetString = NULL;
return 0;
}
static int loadaldriver(void)
{
int err=0;
char *driver;
#ifdef _WIN32
if (hALDLL)
return 0;
#endif
// if (!driver)
{
#ifdef _WIN32
driver = "OpenAL32.DLL";
#elif defined __APPLE__
driver = "/System/Library/Frameworks/OpenGL.framework/OpenGL"; // FIXME: like I know anything about Apple. Hah.
#else
driver = "libopenal.so";
#endif
}
initprintf("Loading %s\n",driver);
#ifdef _WIN32
hALDLL = LoadLibrary(driver);
if (!hALDLL) return -1;
#else
alhandle = dlopen(driver, RTLD_NOW|RTLD_GLOBAL);
if (!alhandle) return -1;
#endif
aldriver = strdup(driver);
balGetSourcei = ALGETPROC("alGetSourcei");
balSourcef = ALGETPROC("alSourcef");
balSourcePlay = ALGETPROC("alSourcePlay");
balSourcePause = ALGETPROC("alSourcePause");
balcGetError = ALGETPROC("alcGetError");
balGetError = ALGETPROC("alGetError");
balBufferData = ALGETPROC("alBufferData");
balGenBuffers = ALGETPROC("alGenBuffers");
balGenSources = ALGETPROC("alGenSources");
balSourcei = ALGETPROC("alSourcei");
balSourceQueueBuffers = ALGETPROC("alSourceQueueBuffers");
balSourceStop = ALGETPROC("alSourceStop");
balSourceUnqueueBuffers = ALGETPROC("alSourceUnqueueBuffers");
balDeleteSources = ALGETPROC("alDeleteSources");
balcMakeContextCurrent = ALGETPROC("alcMakeContextCurrent");
balDeleteSources = ALGETPROC("alDeleteSources");
balDeleteBuffers = ALGETPROC("alDeleteBuffers");
balcDestroyContext = ALGETPROC("alcDestroyContext");
balcCloseDevice = ALGETPROC("alcCloseDevice");
balcOpenDevice = ALGETPROC("alcOpenDevice");
balcCreateContext = ALGETPROC("alcCreateContext");
balGetString = ALGETPROC("alGetString");
if (err) unloadaldriver();
return err;
}
char *ALC_ErrorString(int code)
{
switch (code)
{
case ALC_NO_ERROR:
return "OpenAL error: There is no current error.";
case ALC_INVALID_DEVICE:
return "OpenAL error: No device.";
case ALC_INVALID_CONTEXT:
return "OpenAL error: Invalid context ID.";
case ALC_INVALID_ENUM:
return "OpenAL error: Invalid parameter.";
case ALC_INVALID_VALUE:
return "OpenAL error: Invalid enum parameter value.";
case ALC_OUT_OF_MEMORY:
return "OpenAL error: Unable to allocate memory.";
default:
return "OpenAL error: Unknown error.";
}
}
char *AL_ErrorString(int code)
{
switch (code)
{
case AL_NO_ERROR:
return "OpenAL error: There is no current error.";
case AL_INVALID_NAME:
return "OpenAL error: Invalid name parameter.";
case AL_INVALID_ENUM:
return "OpenAL error: Invalid parameter.";
case AL_INVALID_VALUE:
return "OpenAL error: Invalid enum parameter value.";
case AL_INVALID_OPERATION:
return "OpenAL error: Illegal call.";
case AL_OUT_OF_MEMORY:
return "OpenAL error: Unable to allocate memory.";
case OV_EFAULT:
return "Internal logic fault (bug or heap/stack corruption.";
case OV_EREAD:
return "Read from media.";
case OV_EIMPL:
return "The bitstream makes use of a feature not implemented in this library version.";
case OV_EINVAL:
return "Invalid argument value.";
case OV_ENOTVORBIS:
return "Not Vorbis data.";
case OV_EBADHEADER:
return "Invalid Vorbis header.";
case OV_EVERSION:
return "Vorbis version mismatch.";
case OV_ENOTAUDIO:
return "Packet data submitted to vorbis_synthesis is not audio data.";
case OV_EBADPACKET:
return "Invalid packet submitted to vorbis_synthesis.";
case OV_EBADLINK:
return "Invalid stream section supplied to libvorbis/libvorbisfile, or the requested link is corrupt.";
case OV_ENOSEEK:
return "Bitstream is not seekable.";
default:
return "Unknown OpenAL/Ogg error.";
}
}
void check(int show)
{
AL_Error=balcGetError(device);
if (AL_Error!=ALC_NO_ERROR&&show)initprintf("%s(%s)\n",ALC_ErrorString(AL_Error),ALdoing);
AL_Error=balGetError();
if (AL_Error!= AL_NO_ERROR&&show)initprintf("%s(%s)\n", AL_ErrorString(AL_Error),ALdoing);
}
extern ov_callbacks cb;
int AL_Init()
{
Bmemset(&music,0,sizeof(music)); // "music.def.size=0" means music not playing
if (loadaldriver())
{
initprintf("Failed loading OpenAL driver.\nDownload OpenAL 1.1 or greater from http://www.openal.org/downloads.html\n");
openal_disabled = 1;
return 1;
}
ALdoing="Init";
// device=alcOpenDevice(ud.config.HardwareAL?"Generic Hardware":"Generic Software");
device=balcOpenDevice(NULL);
check(1);
if (device)
{
context=balcCreateContext(device,NULL);
check(1);
}
if (context)
{
// char *s,*t,*u,i;
balcMakeContextCurrent(context);check(1);
initprintf("OpenAL Information:\n"
" Version: %s\n"
" Vendor: %s\n"
" Renderer: %s\n"
// " Extensions:\n"
,balGetString(AL_VERSION),balGetString(AL_VENDOR),balGetString(AL_RENDERER));
/* s = Bstrdup(balGetString(AL_EXTENSIONS));
if (!s) initprintf(balGetString(AL_EXTENSIONS));
else
{
i = 0; t = u = s;
while (*t)
{
if (*t == ' ')
{
if (i&1)
{
*t = 0;
initprintf(" %s\n",u);
u = t+1;
}
i++;
}
t++;
}
if (i&1) initprintf(" %s\n",u);
Bfree(s);
}
*/
}
else initprintf("OpenAL initialization failed.\n");
return 0;
}
void AL_Stop();
void AL_Shutdown()
{
if (openal_disabled || !device) return;
initprintf("Uninitializing OpenAL...\n");
AL_Stop();
ALdoing="Shut";
balcMakeContextCurrent(NULL);
check(1);
balcDestroyContext(context);
check(1);
balcCloseDevice(device);
unloadaldriver();
}
#define BUFFER_SIZE 65536 // (4096 * 4*8*8)
int AL_MusicVolume;
extern int g_musicSize;
int update();
int stream(ALuint buffer);
void open1(char *ptr,int sizef,char loop);
void AL_Pause() {if (music.def.size)balSourcePause(music.source);}
void AL_Continue() {if (music.def.size)balSourcePlay(music.source);}
void AL_Update() {if (music.def.size&&music.ready&&!update(0))AL_Stop();}
int AL_isntALmusic() {return !music.def.size;}
void AL_SetMusicVolume(int volume)
{
AL_MusicVolume=volume;
if (music.def.size)balSourcef(music.source,AL_GAIN,volume/(255.));
}
int isplaying()
{
ALenum state;
balGetSourcei(music.source,AL_SOURCE_STATE,&state);
return state==AL_PLAYING;
}
int update()
{
int processed=0;
int active=1;
ALuint buffer;
ALdoing="update";
balGetSourcei(music.source,AL_BUFFERS_PROCESSED,&processed);
check(1);
if (processed)
switch (music.type)
{
case 1:
while (processed--)
{
ALdoing="update1";
balSourceUnqueueBuffers(music.source,1,&buffer);
check(1);
active=stream(buffer);
if (active)
{
ALdoing="update2";
balSourceQueueBuffers(music.source,1,&buffer);
check(1);
}
}
break;
}
return active;
}
void AL_Stop()
{
int queued=0;ALuint buffer;
if (!music.def.size)
return;
music.ready=0;
balSourceStop(music.source);
balGetSourcei(music.source,AL_BUFFERS_QUEUED,&queued);
ALdoing="release";
while (queued--)
{
balSourceUnqueueBuffers(music.source,1,&buffer);
check(1);
}
balDeleteSources(1,&music.source);check(1);
balDeleteBuffers(2, music.buffers);check(1);
if (music.type == 1)
ov_clear(&music.def.oggStream);
Bmemset(&music,0,sizeof(music));
}
static char pcm[BUFFER_SIZE];
int stream(ALuint buffer)
{
ALsizei size=0;
int section,result;
while (size<BUFFER_SIZE)
{
result=ov_read(&music.def.oggStream,pcm+size,BUFFER_SIZE-size,0,2,1,&section);
if (result==0&&music.loop)ov_pcm_seek(&music.def.oggStream,0);else
if (result> 0)size+=result;else break;
}
if (!size)
return 0;
ALdoing="stream";
balBufferData(buffer,music.format,pcm,size,music.rate);
check(1);
return 1;
}
void AL_PlaySong(char *ptr,int loop)
{
vorbis_info* vorbisInfo;
int bf=2,i;
if (!context)
return;
Bmemset(&music,0,sizeof(sounddef1));
switch (*ptr)
{
case 'O':
music.type=1;
break;
default:
return;
}
music.def.size=g_musicSize;
music.loop=loop;
music.def.ptrsnd=ptr;
switch (music.type)
{
case 1:
if ((i=ov_open_callbacks(&music.def,&music.def.oggStream,0,0,cb))<0)
{
Bmemset(&music,0,sizeof(sounddef1));
initprintf("Music error: %s\n",AL_ErrorString(i));
return;
}
vorbisInfo=ov_info(&music.def.oggStream,-1);
if (!vorbisInfo)
{
initprintf("Music error: vorbisInfo\n");
Bmemset(&music,0,sizeof(sounddef1));
return;
}
music.rate=vorbisInfo->rate;
music.format=(vorbisInfo->channels==1)?AL_FORMAT_MONO16:AL_FORMAT_STEREO16;
break;
}
ALdoing="Open";
balGenBuffers(2, music.buffers);check(1);
balGenSources(1,&music.source);check(1);
balSourcei(music.source,AL_SOURCE_RELATIVE,AL_TRUE);
switch (music.type)
{
case 1:
stream(music.buffers[0]);
if (!stream(music.buffers[1]))
bf=1;
balSourceQueueBuffers(music.source,bf,music.buffers);
break;
}
AL_SetMusicVolume(AL_MusicVolume);
AL_Continue();
music.ready=1;
}
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