/*
Copyright (C) 2003, 2010 - Wolfire Games
+Copyright (C) 2010-2016 - Lugaru contributors (see AUTHORS file)
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 <http://www.gnu.org/licenses/>.
*/
-#if USE_OPENAL
-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// 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 <dlfcn.h>
-
-#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 {
ALuint sid;
OPENAL_SAMPLE *sample;
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 (!initialized)
+ return;
if (pos != NULL) {
alListener3f(AL_POSITION, pos[0], pos[1], -pos[2]);
listener_position[0] = pos[0];
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]);
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;
+ if (!initialized)
+ return false;
+ if ((channel < 0) || (channel >= num_channels))
+ return false;
set_channel_position(channel, pos.x, pos.y, -pos.z);
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;
AL_API void OPENAL_Close()
{
- if (!initialized) return;
+ if (!initialized)
+ return;
ALCcontext *ctx = alcGetCurrentContext();
if (ctx) {
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);
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)
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);
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 (!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;
}
}
- 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);
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...
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;
AL_API void OPENAL_Sample_Free(OPENAL_SAMPLE *sptr)
{
- if (!initialized) return;
+ if (!initialized)
+ return;
if (sptr) {
for (int i = 0; i < num_channels; i++) {
if (impl_channels[i].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 (!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);
AL_API signed char OPENAL_SetVolume(int channel, int vol)
{
- if (!initialized) return false;
+ if (!initialized)
+ return false;
if (channel == OPENAL_ALL) {
for (int i = 0; i < num_channels; i++)
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;
AL_API signed char OPENAL_SetPaused(int channel, signed char paused)
{
- if (!initialized) return false;
+ if (!initialized)
+ return false;
if (channel == OPENAL_ALL) {
for (int i = 0; i < num_channels; i++)
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)
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) {
for (int i = 0; i < num_channels; 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;
}
-AL_API void OPENAL_Stream_Close(OPENAL_STREAM *stream)
-{
- OPENAL_Sample_Free((OPENAL_SAMPLE *) stream);
-}
-
static OPENAL_SAMPLE *OPENAL_Stream_GetSample(OPENAL_STREAM *stream)
{
- if (!initialized) return NULL;
+ if (!initialized)
+ return NULL;
return (OPENAL_SAMPLE *) stream;
}
static signed char OPENAL_Stream_Stop(OPENAL_STREAM *stream)
{
- if (!initialized) return false;
+ 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);
AL_API void OPENAL_Update()
{
- if (!initialized) return;
+ if (!initialized)
+ return;
alcProcessContext(alcGetCurrentContext());
}
channels[chan] = OPENAL_Stream_PlayEx(OPENAL_FREE, sptr, dsp, startpaused);
}
}
-
-#endif
-
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