+/*
+Copyright (C) 2003, 2010 - Wolfire Games
+Copyright (C) 2010-2016 - Lugaru contributors (see AUTHORS file)
-#if USE_OPENAL
+This file is part of Lugaru.
-#include "MacCompatibility.h"
-#include "fmod.h"
+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.
-//#include "al.h"
+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.
-void F_API FSOUND_3D_Listener_SetAttributes(const float *pos, const float *vel, float fx, float fy, float fz, float tx, float ty, float tz)
+You should have received a copy of the GNU General Public License
+along with Lugaru. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "Quaternions.h"
+#include "openal_wrapper.h"
+#include "Sounds.h"
+
+// NOTE:
+// 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.
+
+typedef struct {
+ ALuint sid;
+ OPENAL_SAMPLE *sample;
+ bool startpaused;
+ float position[3];
+} OPENAL_Channels;
+
+typedef struct OPENAL_SAMPLE {
+ char *name;
+ ALuint bid; // buffer id.
+ int mode;
+ int is2d;
+} OPENAL_SAMPLE;
+
+static size_t num_channels = 0;
+static OPENAL_Channels *impl_channels = NULL;
+static bool initialized = false;
+static float listener_position[3];
+
+static void set_channel_position(const int channel, const float x,
+ const float y, const float z)
{
+ OPENAL_Channels *chan = &impl_channels[channel];
+
+ chan->position[0] = x;
+ chan->position[1] = y;
+ chan->position[2] = z;
+
+ OPENAL_SAMPLE *sptr = chan->sample;
+ if (sptr == NULL)
+ return;
+
+ const ALuint sid = chan->sid;
+ const bool no_attenuate = sptr->is2d;
+
+ if (no_attenuate) {
+ alSourcei(sid, AL_SOURCE_RELATIVE, AL_TRUE);
+ alSource3f(sid, AL_POSITION, 0.0f, 0.0f, 0.0f);
+ } else {
+ alSourcei(sid, AL_SOURCE_RELATIVE, AL_FALSE);
+ alSource3f(sid, AL_POSITION, x, y, z);
+ }
}
-signed char F_API FSOUND_3D_SetAttributes(int channel, const float *pos, const float *vel)
+
+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)
{
- return 0;
+ 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];
+ listener_position[2] = -pos[2];
+ }
+
+ ALfloat vec[6] = { fx, fy, -fz, tz, ty, -tz };
+ alListenerfv(AL_ORIENTATION, vec);
+
+ // 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++) {
+ const float *p = impl_channels[i].position;
+ set_channel_position(i, p[0], p[1], p[2]);
+ }
}
-void F_API FSOUND_3D_SetDopplerFactor(float scale)
+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 (pos != NULL)
+ set_channel_position(channel, pos[0], pos[1], -pos[2]);
+
+ // we ignore velocity, since doppler's broken in the Linux AL at the moment...
+
+ 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;
}
-signed char F_API FSOUND_Init(int mixrate, int maxsoftwarechannels, unsigned int flags)
+AL_API signed char OPENAL_Init(int mixrate, int maxsoftwarechannels, unsigned int flags)
{
- return 0;
+ if (initialized)
+ return false;
+ if (maxsoftwarechannels == 0)
+ return false;
+
+ if (flags != 0) // unsupported.
+ return false;
+
+ ALCdevice *dev = alcOpenDevice(NULL);
+ if (!dev)
+ return false;
+
+ ALint caps[] = { ALC_FREQUENCY, mixrate, 0 };
+ ALCcontext *ctx = alcCreateContext(dev, caps);
+ if (!ctx) {
+ alcCloseDevice(dev);
+ return false;
+ }
+
+ alcMakeContextCurrent(ctx);
+ alcProcessContext(ctx);
+
+ 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));
+ printf("AL_EXTENSIONS: %s\n", (char *) alGetString(AL_EXTENSIONS));
+ }
+
+ num_channels = maxsoftwarechannels;
+ impl_channels = new OPENAL_Channels[maxsoftwarechannels];
+ memset(impl_channels, '\0', sizeof (OPENAL_Channels) * num_channels);
+ for (int i = 0; i < num_channels; i++)
+ alGenSources(1, &impl_channels[i].sid); // !!! FIXME: verify this didn't fail!
+
+ initialized = true;
+ return true;
}
-void F_API FSOUND_Close()
+AL_API void OPENAL_Close()
{
+ if (!initialized)
+ return;
+
+ ALCcontext *ctx = alcGetCurrentContext();
+ 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);
+ }
+ ALCdevice *dev = alcGetContextsDevice(ctx);
+ alcMakeContextCurrent(NULL);
+ alcSuspendContext(ctx);
+ alcDestroyContext(ctx);
+ alcCloseDevice(dev);
+ }
+
+ num_channels = 0;
+ delete[] impl_channels;
+ impl_channels = NULL;
+
+ initialized = false;
}
-FSOUND_SAMPLE *F_API FSOUND_GetCurrentSample(int channel)
+static OPENAL_SAMPLE *OPENAL_GetCurrentSample(int channel)
{
- return 0;
+ if (!initialized)
+ return NULL;
+ if ((channel < 0) || (channel >= num_channels))
+ return NULL;
+ return impl_channels[channel].sample;
}
-signed char F_API FSOUND_GetPaused(int channel)
+static signed char OPENAL_GetPaused(int channel)
{
- return 0;
+ if (!initialized)
+ return false;
+ if ((channel < 0) || (channel >= num_channels))
+ return false;
+ if (impl_channels[channel].startpaused)
+ return(true);
+
+ ALint state = 0;
+ alGetSourceiv(impl_channels[channel].sid, AL_SOURCE_STATE, &state);
+ return((state == AL_PAUSED) ? true : false);
}
-unsigned int F_API FSOUND_GetLoopMode(int channel)
+static unsigned int OPENAL_GetLoopMode(int channel)
{
- 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)
+ return(OPENAL_LOOP_NORMAL);
+ return OPENAL_LOOP_OFF;
}
-signed char F_API FSOUND_IsPlaying(int channel)
+static signed char OPENAL_IsPlaying(int channel)
{
- return 0;
+ 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);
}
-int F_API FSOUND_PlaySoundEx(int channel, FSOUND_SAMPLE *sptr, FSOUND_DSPUNIT *dsp, signed char startpaused)
+static int OPENAL_PlaySoundEx(int channel, OPENAL_SAMPLE *sptr, OPENAL_DSPUNIT *dsp, signed char startpaused)
{
- return 0;
+ 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)) {
+ channel = i;
+ break;
+ }
+ }
+ }
+
+ 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);
+ alSourcei(impl_channels[channel].sid, AL_LOOPING, (sptr->mode == OPENAL_LOOP_OFF) ? AL_FALSE : AL_TRUE);
+ set_channel_position(channel, 0.0f, 0.0f, 0.0f);
+
+ impl_channels[channel].startpaused = ((startpaused) ? true : false);
+ if (!startpaused)
+ alSourcePlay(impl_channels[channel].sid);
+ return channel;
}
-#undef FSOUND_Sample_Load
-FSOUND_SAMPLE * F_API FSOUND_Sample_Load(int index, const char *name_or_data, unsigned int mode, int offset, int length)
+
+static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, ALuint &freq)
{
- return 0;
+#ifdef __POWERPC__
+ const int bigendian = 1;
+#else
+ const int bigendian = 0;
+#endif
+
+ // !!! FIXME: if it's not Ogg, we don't have a decoder. I'm lazy. :/
+ char *fname = (char *) alloca(strlen(_fname) + 16);
+ strcpy(fname, _fname);
+ char *ptr = strchr(fname, '.');
+ if (ptr)
+ *ptr = '\0';
+ strcat(fname, ".ogg");
+
+ // just in case...
+#undef fopen
+ FILE *io = fopen(fname, "rb");
+ if (io == NULL)
+ return NULL;
+
+ ALubyte *retval = NULL;
+
+#if 0 // untested, so disable this!
+ // Can we just feed it to the AL compressed?
+ if (alIsExtensionPresent((const ALubyte *) "AL_EXT_vorbis")) {
+ format = alGetEnumValue((const ALubyte *) "AL_FORMAT_VORBIS_EXT");
+ freq = 44100;
+ fseek(io, 0, SEEK_END);
+ size = ftell(io);
+ fseek(io, 0, SEEK_SET);
+ retval = (ALubyte *) malloc(size);
+ size_t rc = fread(retval, size, 1, io);
+ fclose(io);
+ if (rc != 1) {
+ free(retval);
+ return NULL;
+ }
+ return retval;
+ }
+#endif
+
+ // Uncompress and feed to the AL.
+ OggVorbis_File vf;
+ memset(&vf, '\0', sizeof (vf));
+ 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)) {
+ ov_clear(&vf);
+ return NULL;
+ }
+
+ char buf[1024 * 16];
+ 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) {
+ size += rc;
+ if (size >= allocated) {
+ allocated *= 2;
+ ALubyte *tmp = (ALubyte *) realloc(retval, allocated);
+ if (tmp == NULL) {
+ free(retval);
+ retval = NULL;
+ break;
+ }
+ retval = tmp;
+ }
+ memcpy(retval + (size - rc), buf, rc);
+ }
+ }
+ ov_clear(&vf);
+ return retval;
+ }
+
+ fclose(io);
+ return NULL;
}
-void F_API FSOUND_Sample_Free(FSOUND_SAMPLE *sptr)
+
+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...
+
+ OPENAL_SAMPLE *retval = NULL;
+ ALenum format = AL_NONE;
+ ALsizei size = 0;
+ ALuint frequency = 0;
+ void *data = decode_to_pcm(name_or_data, format, size, frequency);
+ if (data == NULL)
+ return NULL;
+
+ ALuint bid = 0;
+ alGetError();
+ alGenBuffers(1, &bid);
+ if (alGetError() == AL_NO_ERROR) {
+ alBufferData(bid, format, data, size, frequency);
+ retval = new OPENAL_SAMPLE;
+ retval->bid = bid;
+ retval->mode = OPENAL_LOOP_OFF;
+ retval->is2d = (mode == OPENAL_2D);
+ retval->name = new char[strlen(name_or_data) + 1];
+ if (retval->name)
+ strcpy(retval->name, name_or_data);
+ }
+
+ free(data);
+ return(retval);
}
-signed char F_API FSOUND_Sample_SetMode(FSOUND_SAMPLE *sptr, unsigned int mode)
+AL_API void OPENAL_Sample_Free(OPENAL_SAMPLE *sptr)
{
- return 0;
+ 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;
+ }
+ }
+ alDeleteBuffers(1, &sptr->bid);
+ delete[] sptr->name;
+ delete sptr;
+ }
}
-signed char F_API FSOUND_Sample_SetMinMaxDistance(FSOUND_SAMPLE *sptr, float min, float max)
+static signed char OPENAL_Sample_SetMode(OPENAL_SAMPLE *sptr, unsigned int mode)
{
- return 0;
+ if (!initialized)
+ return false;
+ if ((mode != OPENAL_LOOP_NORMAL) && (mode != OPENAL_LOOP_OFF))
+ return false;
+ if (!sptr)
+ return false;
+ sptr->mode = mode;
+ return true;
}
-signed char F_API FSOUND_SetFrequency(int channel, int freq)
+AL_API signed char OPENAL_SetFrequency(int channel, int freq)
{
- return 0;
+ 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
+ alSourcef(impl_channels[channel].sid, AL_PITCH, 8012.0f / 44100.0f);
+ else
+ alSourcef(impl_channels[channel].sid, AL_PITCH, 1.0f);
+ return true;
}
-signed char F_API FSOUND_SetVolume(int channel, int vol)
+AL_API signed char OPENAL_SetVolume(int channel, int vol)
{
- return 0;
+ if (!initialized)
+ return false;
+
+ 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 (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;
}
-signed char F_API FSOUND_SetPaused(int channel, signed char paused)
+AL_API signed char OPENAL_SetPaused(int channel, signed char paused)
{
- return 0;
+ if (!initialized)
+ return false;
+
+ 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;
+
+ ALint state = 0;
+ if (impl_channels[channel].startpaused)
+ state = AL_PAUSED;
+ else
+ alGetSourceiv(impl_channels[channel].sid, AL_SOURCE_STATE, &state);
+
+ if ((paused) && (state == AL_PLAYING))
+ alSourcePause(impl_channels[channel].sid);
+ else if ((!paused) && (state == AL_PAUSED)) {
+ alSourcePlay(impl_channels[channel].sid);
+ impl_channels[channel].startpaused = false;
+ }
+ return true;
}
-void F_API FSOUND_SetSFXMasterVolume(int volume)
+AL_API void OPENAL_SetSFXMasterVolume(int volume)
{
+ if (!initialized)
+ return;
+ ALfloat gain = ((ALfloat) volume) / 255.0f;
+ alListenerf(AL_GAIN, gain);
}
-signed char F_API FSOUND_StopSound(int channel)
+AL_API signed char OPENAL_StopSound(int channel)
{
- return 0;
+ if (!initialized)
+ return false;
+
+ 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;
+ alSourceStop(impl_channels[channel].sid);
+ impl_channels[channel].startpaused = false;
+ return true;
}
-FSOUND_STREAM * F_API FSOUND_Stream_Open(const char *name_or_data, unsigned int mode, int offset, int length)
+static OPENAL_SAMPLE *OPENAL_Stream_GetSample(OPENAL_STREAM *stream)
{
- return 0;
+ if (!initialized)
+ return NULL;
+ return (OPENAL_SAMPLE *) stream;
}
-signed char F_API FSOUND_Stream_Close(FSOUND_STREAM *stream)
+static int OPENAL_Stream_PlayEx(int channel, OPENAL_STREAM *stream, OPENAL_DSPUNIT *dsp, signed char startpaused)
{
- return 0;
+ return OPENAL_PlaySoundEx(channel, (OPENAL_SAMPLE *) stream, dsp, startpaused);
}
-FSOUND_SAMPLE * F_API FSOUND_Stream_GetSample(FSOUND_STREAM *stream)
+static signed char OPENAL_Stream_Stop(OPENAL_STREAM *stream)
{
- return 0;
+ 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;
+ }
+ }
+ return true;
}
-int F_API FSOUND_Stream_PlayEx(int channel, FSOUND_STREAM *stream, FSOUND_DSPUNIT *dsp, signed char startpaused)
+AL_API signed char OPENAL_Stream_SetMode(OPENAL_STREAM *stream, unsigned int mode)
{
- return 0;
+ return OPENAL_Sample_SetMode((OPENAL_SAMPLE *) stream, mode);
}
-signed char F_API FSOUND_Stream_Stop(FSOUND_STREAM *stream)
+AL_API void OPENAL_Update()
{
- return 0;
+ if (!initialized)
+ return;
+ alcProcessContext(alcGetCurrentContext());
}
-signed char F_API FSOUND_Stream_SetMode(FSOUND_STREAM *stream, unsigned int mode)
+AL_API signed char OPENAL_SetOutput(int outputtype)
{
- return 0;
+ return true;
}
-void F_API FSOUND_Update()
+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);
+ }
}
-#endif
+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);
+ }
+}
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