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

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#ifdef _WIN32
#include "dsound.h"
#endif
#include "baselayer.h"
#include "compat.h"
#include <AL/al.h>
#include <AL/alc.h>
#include <vorbis/vorbisfile.h>
#include "_multivc.h"
ALCdevice * device=NULL;
ALCcontext * context=NULL;
char *ALdoing="";
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;
}sounddef1;
sounddef1 sounds1[2];
#ifdef _WIN32
// Windows
static HANDLE hALDLL;
#else
#include <dlfcn.h>
static void *alhandle = NULL;
#endif
char *aldriver = NULL;
void (AL_APIENTRY * balGetSourcei)( ALuint sid, ALenum param, ALint* value );
void (AL_APIENTRY * balSourcef)( ALuint sid, ALenum param, ALfloat value );
void (AL_APIENTRY * balSourcePlay)( ALuint sid );
void (AL_APIENTRY * balSourcePause)( ALuint sid );
ALCenum (ALC_APIENTRY * balcGetError)( ALCdevice *device );
ALenum (AL_APIENTRY * balGetError)( void );
void (AL_APIENTRY * balBufferData)( ALuint bid, ALenum format, const ALvoid* data, ALsizei size, ALsizei freq );
void (AL_APIENTRY * balGenBuffers)( ALsizei n, ALuint* buffers );
void (AL_APIENTRY * balGenSources)( ALsizei n, ALuint* sources );
void (AL_APIENTRY * balSourcei)( ALuint sid, ALenum param, ALint value );
void (AL_APIENTRY * balSourceQueueBuffers)( ALuint sid, ALsizei numEntries, const ALuint *bids );
void (AL_APIENTRY * balSourceStop)( ALuint sid );
void (AL_APIENTRY * balSourceUnqueueBuffers)( ALuint sid, ALsizei numEntries, ALuint *bids );
void (AL_APIENTRY * bbalDeleteSources)( ALsizei n, const ALuint* sources );
ALCboolean (ALC_APIENTRY * balcMakeContextCurrent)( ALCcontext *context );
void (AL_APIENTRY * balDeleteSources)( ALsizei n, const ALuint* sources );
void (AL_APIENTRY * balDeleteBuffers)( ALsizei n, const ALuint* buffers );
void (ALC_APIENTRY * balcDestroyContext)( ALCcontext *context );
ALCboolean (ALC_APIENTRY * balcCloseDevice)( ALCdevice *device );
ALCdevice *(ALC_APIENTRY * balcOpenDevice)( const ALCchar *devicename );
ALCcontext *(ALC_APIENTRY * balcCreateContext)( ALCdevice *device, const ALCint* attrlist );
const ALchar* (AL_APIENTRY * balGetString)( ALenum param );
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)
int unloadaldriver(void)
{
#ifdef _WIN32
if (!hALDLL) return 0;
#endif
free(aldriver);
aldriver = NULL;
#ifdef _WIN32
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;
bbalDeleteSources = NULL;
balcMakeContextCurrent = NULL;
balDeleteSources = NULL;
balDeleteBuffers = NULL;
balcDestroyContext = NULL;
balcCloseDevice = NULL;
balcOpenDevice = NULL;
balcCreateContext = NULL;
balGetString = NULL;
return 0;
}
int loadaldriver(void)
{
void *t;
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);
#if defined _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()
{
if (loadaldriver())
{
initprintf("Failed loading OpenAL driver.\nDownload OpenAL 1.1 or greater from http://www.openal.org/downloads.html.");
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)
{
balcMakeContextCurrent(context);check(1);
initprintf("OpenAL Information:\n"
" Version: %s\n"
" Vendor: %s\n\n",balGetString(AL_VERSION),balGetString(AL_VENDOR));
} else initprintf("OpenAL initialization failed.\n");
ALdoing="Open";
balGenBuffers(16, sounds1[1].buffers);
check(1);
balGenSources(1,&sounds1[1].source);
check(1);
return 0;
}
void AL_Shutdown()
{
ALdoing="Delete source";
balDeleteSources(1,&sounds1[1].source);
check(1);
ALdoing="Delete buffers";
balDeleteBuffers(16, sounds1[1].buffers);
check(1);
ALdoing="Shut";
balcMakeContextCurrent(NULL);
check(1);
balcDestroyContext(context);
check(1);
balcCloseDevice(device);
unloadaldriver();
}
#define BUFFER_SIZE (4096 * 4*8*8)
int AL_MusicVolume;
sounddef1 music;
extern int Musicsize;
void AL_Stop();
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&&!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--)
{
balSourceUnqueueBuffers(music.source,1,&buffer);
check(1);
active=stream(buffer);
if(active)
{
balSourceQueueBuffers(music.source,1,&buffer);
check(1);
}
}
break;
}
return active;
}
void AL_Stop()
{
int queued=0;ALuint buffer;
if(!music.def.size)return;
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(sounddef1));
}
int stream(ALuint buffer)
{
char pcm[BUFFER_SIZE];
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;
ALenum format;ALsizei size;ALsizei freq;ALvoid* data;
if(!context)return;
Bmemset(&music,0,sizeof(sounddef1));
switch(*ptr)
{
case 'O':music.type=1;break;
default: return;
}
music.def.size=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();
}
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