X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=Source%2Fopenal_wrapper.cpp;h=209ce1a0a4dc8a3be0f8292baa17db3c15289a7e;hb=f5b46b288b69fd97186ed860309a62208b7cf90f;hp=b4f526682a2405c27ee9c901db91cb8b01423f9c;hpb=03e4e9fccebe5faf404de1b8d641ad1a981112bc;p=lugaru.git diff --git a/Source/openal_wrapper.cpp b/Source/openal_wrapper.cpp index b4f5266..209ce1a 100644 --- a/Source/openal_wrapper.cpp +++ b/Source/openal_wrapper.cpp @@ -3,28 +3,25 @@ Copyright (C) 2003, 2010 - Wolfire Games This file is part of Lugaru. -Lugaru 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. +Lugaru 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, +Lugaru 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. +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. +along with Lugaru. If not, see . */ -#if USE_OPENAL - #include #include #include +#include "Quaternions.h" #include "openal_wrapper.h" #include "Sounds.h" @@ -32,83 +29,14 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // FMOD uses a Left Handed Coordinate system, OpenAL uses a Right Handed // one...so we just need to flip the sign on the Z axis when appropriate. -#define DYNAMIC_LOAD_OPENAL 0 - -#if DYNAMIC_LOAD_OPENAL - -#include - -#define AL_FUNC(t,ret,fn,params,call,rt) \ - extern "C" { \ - static ret ALAPIENTRY (*p##fn) params = NULL; \ - ret ALAPIENTRY fn params { rt p##fn call; } \ - } -#include "alstubs.h" -#undef AL_FUNC - -static void *aldlhandle = NULL; - -static bool lookup_alsym(const char *funcname, void **func, const char *libname) -{ - if (!aldlhandle) - return false; - - *func = dlsym(aldlhandle, funcname); - if (*func == NULL) - { - fprintf(stderr, "Failed to find OpenAL symbol \"%s\" in \"%s\"\n", - funcname, libname); - return false; - } - return true; -} - -static void unload_alsyms(void) -{ - #define AL_FUNC(t,ret,fn,params,call,rt) p##fn = NULL; - #include "alstubs.h" - #undef AL_FUNC - if (aldlhandle) - { - dlclose(aldlhandle); - aldlhandle = NULL; - } -} - -static bool lookup_all_alsyms(const char *libname) -{ - if (!aldlhandle) - { - if ( (aldlhandle = dlopen(libname, RTLD_GLOBAL | RTLD_NOW)) == NULL ) - return false; - } - - bool retval = true; - #define AL_FUNC(t,ret,fn,params,call,rt) \ - if (!lookup_alsym(#fn, (void **) &p##fn, libname)) retval = false; - #include "alstubs.h" - #undef AL_FUNC - - if (!retval) - unload_alsyms(); - - return retval; -} -#else -#define lookup_all_alsyms(x) (true) -#define unload_alsyms() -#endif - -typedef struct -{ +typedef struct { ALuint sid; OPENAL_SAMPLE *sample; bool startpaused; float position[3]; } OPENAL_Channels; -typedef struct OPENAL_SAMPLE -{ +typedef struct OPENAL_SAMPLE { char *name; ALuint bid; // buffer id. int mode; @@ -136,13 +64,10 @@ static void set_channel_position(const int channel, const float x, const ALuint sid = chan->sid; const bool no_attenuate = sptr->is2d; - if (no_attenuate) - { + if (no_attenuate) { alSourcei(sid, AL_SOURCE_RELATIVE, AL_TRUE); alSource3f(sid, AL_POSITION, 0.0f, 0.0f, 0.0f); - } - else - { + } else { alSourcei(sid, AL_SOURCE_RELATIVE, AL_FALSE); alSource3f(sid, AL_POSITION, x, y, z); } @@ -151,9 +76,9 @@ static void set_channel_position(const int channel, const float x, AL_API void OPENAL_3D_Listener_SetAttributes(const float *pos, const float *vel, float fx, float fy, float fz, float tx, float ty, float tz) { - if (!initialized) return; - if (pos != NULL) - { + if (!initialized) + return; + if (pos != NULL) { alListener3f(AL_POSITION, pos[0], pos[1], -pos[2]); listener_position[0] = pos[0]; listener_position[1] = pos[1]; @@ -166,8 +91,7 @@ AL_API void OPENAL_3D_Listener_SetAttributes(const float *pos, const float *vel, // we ignore velocity, since doppler's broken in the Linux AL at the moment... // adjust existing positions... - for (int i = 0; i < num_channels; i++) - { + for (int i = 0; i < num_channels; i++) { const float *p = impl_channels[i].position; set_channel_position(i, p[0], p[1], p[2]); } @@ -175,8 +99,10 @@ AL_API void OPENAL_3D_Listener_SetAttributes(const float *pos, const float *vel, AL_API signed char OPENAL_3D_SetAttributes(int channel, const float *pos, const float *vel) { - if (!initialized) return false; - if ((channel < 0) || (channel >= num_channels)) return false; + if (!initialized) + return false; + if ((channel < 0) || (channel >= num_channels)) + return false; if (pos != NULL) set_channel_position(channel, pos[0], pos[1], -pos[2]); @@ -186,31 +112,35 @@ AL_API signed char OPENAL_3D_SetAttributes(int channel, const float *pos, const return true; } +AL_API signed char OPENAL_3D_SetAttributes_(int channel, const XYZ &pos, const float *vel) +{ + if (!initialized) + return false; + if ((channel < 0) || (channel >= num_channels)) + return false; + + set_channel_position(channel, pos.x, pos.y, -pos.z); + + return true; +} + AL_API signed char OPENAL_Init(int mixrate, int maxsoftwarechannels, unsigned int flags) { - if (initialized) return false; - if (maxsoftwarechannels == 0) return false; + if (initialized) + return false; + if (maxsoftwarechannels == 0) + return false; if (flags != 0) // unsupported. return false; - if (!lookup_all_alsyms("./openal.so")) // !!! FIXME: linux specific lib name - { - if (!lookup_all_alsyms("openal.so.1")) // !!! FIXME: linux specific lib name - { - if (!lookup_all_alsyms("openal.so")) // !!! FIXME: linux specific lib name - return false; - } - } - ALCdevice *dev = alcOpenDevice(NULL); if (!dev) return false; ALint caps[] = { ALC_FREQUENCY, mixrate, 0 }; ALCcontext *ctx = alcCreateContext(dev, caps); - if (!ctx) - { + if (!ctx) { alcCloseDevice(dev); return false; } @@ -218,9 +148,8 @@ AL_API signed char OPENAL_Init(int mixrate, int maxsoftwarechannels, unsigned in alcMakeContextCurrent(ctx); alcProcessContext(ctx); - bool cmdline(const char *cmd); - if (cmdline("openalinfo")) - { + bool cmdline(const char * cmd); + if (cmdline("openalinfo")) { printf("AL_VENDOR: %s\n", (char *) alGetString(AL_VENDOR)); printf("AL_RENDERER: %s\n", (char *) alGetString(AL_RENDERER)); printf("AL_VERSION: %s\n", (char *) alGetString(AL_VERSION)); @@ -239,13 +168,12 @@ AL_API signed char OPENAL_Init(int mixrate, int maxsoftwarechannels, unsigned in AL_API void OPENAL_Close() { - if (!initialized) return; + if (!initialized) + return; ALCcontext *ctx = alcGetCurrentContext(); - if (ctx) - { - for (int i = 0; i < num_channels; i++) - { + if (ctx) { + for (int i = 0; i < num_channels; i++) { alSourceStop(impl_channels[i].sid); alSourcei(impl_channels[i].sid, AL_BUFFER, 0); alDeleteSources(1, &impl_channels[i].sid); @@ -261,21 +189,24 @@ AL_API void OPENAL_Close() delete[] impl_channels; impl_channels = NULL; - unload_alsyms(); initialized = false; } static OPENAL_SAMPLE *OPENAL_GetCurrentSample(int channel) { - if (!initialized) return NULL; - if ((channel < 0) || (channel >= num_channels)) return NULL; + if (!initialized) + return NULL; + if ((channel < 0) || (channel >= num_channels)) + return NULL; return impl_channels[channel].sample; } static signed char OPENAL_GetPaused(int channel) { - if (!initialized) return false; - if ((channel < 0) || (channel >= num_channels)) return false; + if (!initialized) + return false; + if ((channel < 0) || (channel >= num_channels)) + return false; if (impl_channels[channel].startpaused) return(true); @@ -286,8 +217,10 @@ static signed char OPENAL_GetPaused(int channel) static unsigned int OPENAL_GetLoopMode(int channel) { - if (!initialized) return 0; - if ((channel < 0) || (channel >= num_channels)) return 0; + if (!initialized) + return 0; + if ((channel < 0) || (channel >= num_channels)) + return 0; ALint loop = 0; alGetSourceiv(impl_channels[channel].sid, AL_LOOPING, &loop); if (loop) @@ -297,8 +230,10 @@ static unsigned int OPENAL_GetLoopMode(int channel) static signed char OPENAL_IsPlaying(int channel) { - if (!initialized) return false; - if ((channel < 0) || (channel >= num_channels)) return false; + if (!initialized) + return false; + if ((channel < 0) || (channel >= num_channels)) + return false; ALint state = 0; alGetSourceiv(impl_channels[channel].sid, AL_SOURCE_STATE, &state); return((state == AL_PLAYING) ? true : false); @@ -306,24 +241,25 @@ static signed char OPENAL_IsPlaying(int channel) static int OPENAL_PlaySoundEx(int channel, OPENAL_SAMPLE *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused) { - if (!initialized) return -1; - if (sptr == NULL) return -1; - if (dsp != NULL) return -1; - if (channel == OPENAL_FREE) - { - for (int i = 0; i < num_channels; i++) - { + if (!initialized) + return -1; + if (sptr == NULL) + return -1; + if (dsp != NULL) + return -1; + if (channel == OPENAL_FREE) { + for (int i = 0; i < num_channels; i++) { ALint state = 0; alGetSourceiv(impl_channels[i].sid, AL_SOURCE_STATE, &state); - if ((state != AL_PLAYING) && (state != AL_PAUSED)) - { + if ((state != AL_PLAYING) && (state != AL_PAUSED)) { channel = i; break; } } } - if ((channel < 0) || (channel >= num_channels)) return -1; + if ((channel < 0) || (channel >= num_channels)) + return -1; alSourceStop(impl_channels[channel].sid); impl_channels[channel].sample = sptr; alSourcei(impl_channels[channel].sid, AL_BUFFER, sptr->bid); @@ -349,21 +285,21 @@ static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, AL char *fname = (char *) alloca(strlen(_fname) + 16); strcpy(fname, _fname); char *ptr = strchr(fname, '.'); - if (ptr) *ptr = '\0'; + if (ptr) + *ptr = '\0'; strcat(fname, ".ogg"); // just in case... - #undef fopen +#undef fopen FILE *io = fopen(fname, "rb"); if (io == NULL) return NULL; ALubyte *retval = NULL; - #if 0 // untested, so disable this! +#if 0 // untested, so disable this! // Can we just feed it to the AL compressed? - if (alIsExtensionPresent((const ALubyte *) "AL_EXT_vorbis")) - { + if (alIsExtensionPresent((const ALubyte *) "AL_EXT_vorbis")) { format = alGetEnumValue((const ALubyte *) "AL_FORMAT_VORBIS_EXT"); freq = 44100; fseek(io, 0, SEEK_END); @@ -372,28 +308,25 @@ static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, AL retval = (ALubyte *) malloc(size); size_t rc = fread(retval, size, 1, io); fclose(io); - if (rc != 1) - { + if (rc != 1) { free(retval); return NULL; } return retval; } - #endif +#endif // Uncompress and feed to the AL. OggVorbis_File vf; memset(&vf, '\0', sizeof (vf)); - if (ov_open(io, &vf, NULL, 0) == 0) - { + if (ov_open(io, &vf, NULL, 0) == 0) { int bitstream = 0; vorbis_info *info = ov_info(&vf, -1); size = 0; format = (info->channels == 1) ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16; freq = info->rate; - if ((info->channels != 1) && (info->channels != 2)) - { + if ((info->channels != 1) && (info->channels != 2)) { ov_clear(&vf); return NULL; } @@ -402,17 +335,13 @@ static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, AL long rc = 0; size_t allocated = 64 * 1024; retval = (ALubyte *) malloc(allocated); - while ( (rc = ov_read(&vf, buf, sizeof (buf), bigendian, 2, 1, &bitstream)) != 0 ) - { - if (rc > 0) - { + while ( (rc = ov_read(&vf, buf, sizeof (buf), bigendian, 2, 1, &bitstream)) != 0 ) { + if (rc > 0) { size += rc; - if (size >= allocated) - { + if (size >= allocated) { allocated *= 2; ALubyte *tmp = (ALubyte *) realloc(retval, allocated); - if (tmp == NULL) - { + if (tmp == NULL) { free(retval); retval = NULL; break; @@ -433,11 +362,16 @@ static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, AL AL_API OPENAL_SAMPLE *OPENAL_Sample_Load(int index, const char *name_or_data, unsigned int mode, int offset, int length) { - if (!initialized) return NULL; - if (index != OPENAL_FREE) return NULL; // this is all the game does... - if (offset != 0) return NULL; // this is all the game does... - if (length != 0) return NULL; // this is all the game does... - if ((mode != OPENAL_HW3D) && (mode != OPENAL_2D)) return NULL; // this is all the game does... + if (!initialized) + return NULL; + if (index != OPENAL_FREE) + return NULL; // this is all the game does... + if (offset != 0) + return NULL; // this is all the game does... + if (length != 0) + return NULL; // this is all the game does... + if ((mode != OPENAL_HW3D) && (mode != OPENAL_2D)) + return NULL; // this is all the game does... OPENAL_SAMPLE *retval = NULL; ALuint bufferName = 0; @@ -451,8 +385,7 @@ AL_API OPENAL_SAMPLE *OPENAL_Sample_Load(int index, const char *name_or_data, un ALuint bid = 0; alGetError(); alGenBuffers(1, &bid); - if (alGetError() == AL_NO_ERROR) - { + if (alGetError() == AL_NO_ERROR) { alBufferData(bid, format, data, size, frequency); retval = new OPENAL_SAMPLE; retval->bid = bid; @@ -469,13 +402,11 @@ AL_API OPENAL_SAMPLE *OPENAL_Sample_Load(int index, const char *name_or_data, un AL_API void OPENAL_Sample_Free(OPENAL_SAMPLE *sptr) { - if (!initialized) return; - if (sptr) - { - for (int i = 0; i < num_channels; i++) - { - if (impl_channels[i].sample == sptr) - { + if (!initialized) + return; + if (sptr) { + for (int i = 0; i < num_channels; i++) { + if (impl_channels[i].sample == sptr) { alSourceStop(impl_channels[i].sid); alSourcei(impl_channels[i].sid, AL_BUFFER, 0); impl_channels[i].sample = NULL; @@ -489,25 +420,30 @@ AL_API void OPENAL_Sample_Free(OPENAL_SAMPLE *sptr) static signed char OPENAL_Sample_SetMode(OPENAL_SAMPLE *sptr, unsigned int mode) { - if (!initialized) return false; - if ((mode != OPENAL_LOOP_NORMAL) && (mode != OPENAL_LOOP_OFF)) return false; - if (!sptr) return false; + if (!initialized) + return false; + if ((mode != OPENAL_LOOP_NORMAL) && (mode != OPENAL_LOOP_OFF)) + return false; + if (!sptr) + return false; sptr->mode = mode; return true; } AL_API signed char OPENAL_SetFrequency(int channel, int freq) { - if (!initialized) return false; - if (channel == OPENAL_ALL) - { + if (!initialized) + return false; + if (channel == OPENAL_ALL) { for (int i = 0; i < num_channels; i++) OPENAL_SetFrequency(i, freq); return true; } - if ((channel < 0) || (channel >= num_channels)) return false; - if (freq == 8012) // hack + if ((channel < 0) || (channel >= num_channels)) + return false; + if (freq == 8012) + // hack alSourcef(impl_channels[channel].sid, AL_PITCH, 8012.0f / 44100.0f); else alSourcef(impl_channels[channel].sid, AL_PITCH, 1.0f); @@ -516,19 +452,22 @@ AL_API signed char OPENAL_SetFrequency(int channel, int freq) AL_API signed char OPENAL_SetVolume(int channel, int vol) { - if (!initialized) return false; + if (!initialized) + return false; - if (channel == OPENAL_ALL) - { + if (channel == OPENAL_ALL) { for (int i = 0; i < num_channels; i++) OPENAL_SetVolume(i, vol); return true; } - if ((channel < 0) || (channel >= num_channels)) return false; + if ((channel < 0) || (channel >= num_channels)) + return false; - if (vol < 0) vol = 0; - else if (vol > 255) vol = 255; + if (vol < 0) + vol = 0; + else if (vol > 255) + vol = 255; ALfloat gain = ((ALfloat) vol) / 255.0f; alSourcef(impl_channels[channel].sid, AL_GAIN, gain); return true; @@ -536,16 +475,17 @@ AL_API signed char OPENAL_SetVolume(int channel, int vol) AL_API signed char OPENAL_SetPaused(int channel, signed char paused) { - if (!initialized) return false; + if (!initialized) + return false; - if (channel == OPENAL_ALL) - { + if (channel == OPENAL_ALL) { for (int i = 0; i < num_channels; i++) OPENAL_SetPaused(i, paused); return true; } - if ((channel < 0) || (channel >= num_channels)) return false; + if ((channel < 0) || (channel >= num_channels)) + return false; ALint state = 0; if (impl_channels[channel].startpaused) @@ -555,8 +495,7 @@ AL_API signed char OPENAL_SetPaused(int channel, signed char paused) if ((paused) && (state == AL_PLAYING)) alSourcePause(impl_channels[channel].sid); - else if ((!paused) && (state == AL_PAUSED)) - { + else if ((!paused) && (state == AL_PAUSED)) { alSourcePlay(impl_channels[channel].sid); impl_channels[channel].startpaused = false; } @@ -565,23 +504,25 @@ AL_API signed char OPENAL_SetPaused(int channel, signed char paused) AL_API void OPENAL_SetSFXMasterVolume(int volume) { - if (!initialized) return; + if (!initialized) + return; ALfloat gain = ((ALfloat) volume) / 255.0f; alListenerf(AL_GAIN, gain); } AL_API signed char OPENAL_StopSound(int channel) { - if (!initialized) return false; + if (!initialized) + return false; - if (channel == OPENAL_ALL) - { + if (channel == OPENAL_ALL) { for (int i = 0; i < num_channels; i++) OPENAL_StopSound(i); return true; } - if ((channel < 0) || (channel >= num_channels)) return false; + if ((channel < 0) || (channel >= num_channels)) + return false; alSourceStop(impl_channels[channel].sid); impl_channels[channel].startpaused = false; return true; @@ -594,7 +535,8 @@ AL_API void OPENAL_Stream_Close(OPENAL_STREAM *stream) static OPENAL_SAMPLE *OPENAL_Stream_GetSample(OPENAL_STREAM *stream) { - if (!initialized) return NULL; + if (!initialized) + return NULL; return (OPENAL_SAMPLE *) stream; } @@ -605,11 +547,10 @@ static int OPENAL_Stream_PlayEx(int channel, OPENAL_STREAM *stream, OPENAL_DSPUN static signed char OPENAL_Stream_Stop(OPENAL_STREAM *stream) { - if (!initialized) return false; - for (int i = 0; i < num_channels; i++) - { - if (impl_channels[i].sample == (OPENAL_SAMPLE *) stream) - { + if (!initialized) + return false; + for (int i = 0; i < num_channels; i++) { + if (impl_channels[i].sample == (OPENAL_SAMPLE *) stream) { alSourceStop(impl_channels[i].sid); impl_channels[i].startpaused = false; } @@ -624,7 +565,8 @@ AL_API signed char OPENAL_Stream_SetMode(OPENAL_STREAM *stream, unsigned int mod AL_API void OPENAL_Update() { - if (!initialized) return; + if (!initialized) + return; alcProcessContext(alcGetCurrentContext()); } @@ -633,60 +575,44 @@ AL_API signed char OPENAL_SetOutput(int outputtype) return true; } -extern int channels[100]; -extern OPENAL_STREAM * strm[20]; +extern int channels[]; extern "C" void PlaySoundEx(int chan, OPENAL_SAMPLE *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused) { - const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]); - if (currSample && currSample == samp[chan]) - { - if (OPENAL_GetPaused(channels[chan])) - { - OPENAL_StopSound(channels[chan]); - channels[chan] = OPENAL_FREE; - } - else if (OPENAL_IsPlaying(channels[chan])) - { - int loop_mode = OPENAL_GetLoopMode(channels[chan]); - if (loop_mode & OPENAL_LOOP_OFF) - { - channels[chan] = OPENAL_FREE; - } - } - } - else - { - channels[chan] = OPENAL_FREE; - } - - channels[chan] = OPENAL_PlaySoundEx(channels[chan], sptr, dsp, startpaused); - if (channels[chan] < 0) - { - channels[chan] = OPENAL_PlaySoundEx(OPENAL_FREE, sptr, dsp, startpaused); - } + const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]); + if (currSample && currSample == samp[chan]) { + if (OPENAL_GetPaused(channels[chan])) { + OPENAL_StopSound(channels[chan]); + channels[chan] = OPENAL_FREE; + } else if (OPENAL_IsPlaying(channels[chan])) { + int loop_mode = OPENAL_GetLoopMode(channels[chan]); + if (loop_mode & OPENAL_LOOP_OFF) { + channels[chan] = OPENAL_FREE; + } + } + } else { + channels[chan] = OPENAL_FREE; + } + + channels[chan] = OPENAL_PlaySoundEx(channels[chan], sptr, dsp, startpaused); + if (channels[chan] < 0) { + channels[chan] = OPENAL_PlaySoundEx(OPENAL_FREE, sptr, dsp, startpaused); + } } extern "C" void PlayStreamEx(int chan, OPENAL_STREAM *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused) { - const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]); - if (currSample && currSample == OPENAL_Stream_GetSample(sptr)) - { - OPENAL_StopSound(channels[chan]); - OPENAL_Stream_Stop(sptr); - } - else - { - OPENAL_Stream_Stop(sptr); - channels[chan] = OPENAL_FREE; - } - - channels[chan] = OPENAL_Stream_PlayEx(channels[chan], sptr, dsp, startpaused); - if (channels[chan] < 0) - { - channels[chan] = OPENAL_Stream_PlayEx(OPENAL_FREE, sptr, dsp, startpaused); - } -} - -#endif + const OPENAL_SAMPLE * currSample = OPENAL_GetCurrentSample(channels[chan]); + if (currSample && currSample == OPENAL_Stream_GetSample(sptr)) { + OPENAL_StopSound(channels[chan]); + OPENAL_Stream_Stop(sptr); + } else { + OPENAL_Stream_Stop(sptr); + channels[chan] = OPENAL_FREE; + } + channels[chan] = OPENAL_Stream_PlayEx(channels[chan], sptr, dsp, startpaused); + if (channels[chan] < 0) { + channels[chan] = OPENAL_Stream_PlayEx(OPENAL_FREE, sptr, dsp, startpaused); + } +}