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