+/*
+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.
+
+This program 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.
+
+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.
+*/
+
#if USE_OPENAL
ALuint sid;
FSOUND_SAMPLE *sample;
bool startpaused;
- FSOUND_STREAM *stream;
+ float position[3];
} OPENAL_Channels;
typedef struct FSOUND_SAMPLE
{
+ char *name;
ALuint bid; // buffer id.
int mode;
-} FSOUND_SAMPLE, FSOUND_STREAM;
+ int is2d;
+ float min_distance;
+} FSOUND_SAMPLE;
+typedef struct FSOUND_STREAM
+{
+ char *name;
+ ALuint bid; // buffer id.
+ int mode;
+ int is2d;
+} FSOUND_STREAM;
static size_t num_channels = 0;
static OPENAL_Channels *channels = NULL;
static bool initialized = false;
+static float listener_position[3];
+
+
+static inline bool source_too_close(const int channel)
+{
+ const OPENAL_Channels *chan = &channels[channel];
+ const float *pos = chan->position;
+ const float distance = sqrtf(powf((pos[0] - listener_position[0]), 2.0f) +
+ powf((pos[1] - listener_position[1]), 2.0f) +
+ powf((pos[2] - listener_position[2]), 2.0f));
+ return (distance <= chan->sample->min_distance);
+}
+
+
+static void set_channel_position(const int channel, const float x,
+ const float y, const float z)
+{
+ OPENAL_Channels *chan = &channels[channel];
+
+ chan->position[0] = x;
+ chan->position[1] = y;
+ chan->position[2] = z;
+
+ FSOUND_SAMPLE *sptr = chan->sample;
+ if (sptr == NULL)
+ return;
+
+ const ALuint sid = chan->sid;
+ const bool no_attenuate = ((sptr->is2d) || (source_too_close(channel)));
+
+ 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);
+ }
+}
void F_API 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)
+ {
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 = channels[i].position;
+ set_channel_position(i, p[0], p[1], p[2]);
+ }
}
signed char F_API OPENAL_3D_SetAttributes(int channel, const float *pos, const float *vel)
if ((channel < 0) || (channel >= num_channels)) return FALSE;
if (pos != NULL)
- alSource3f(channels[channel].sid, AL_POSITION, pos[0], pos[1], -pos[2]);
+ 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;
}
alcMakeContextCurrent(ctx);
alcProcessContext(ctx);
- 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));
+ 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;
channels = new OPENAL_Channels[maxsoftwarechannels];
channels[channel].sample = sptr;
alSourcei(channels[channel].sid, AL_BUFFER, sptr->bid);
alSourcei(channels[channel].sid, AL_LOOPING, (sptr->mode == FSOUND_LOOP_OFF) ? AL_FALSE : AL_TRUE);
+ set_channel_position(channel, 0.0f, 0.0f, 0.0f);
+
channels[channel].startpaused = ((startpaused) ? true : false);
if (!startpaused)
alSourcePlay(channels[channel].sid);
static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, ALuint &freq)
{
+#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);
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"))
{
}
return retval;
}
+ #endif
// Uncompress and feed to the AL.
OggVorbis_File vf;
long rc = 0;
size_t allocated = 64 * 1024;
retval = (ALubyte *) malloc(allocated);
- while ( (rc = ov_read(&vf, buf, sizeof (buf), 0, 2, 1, &bitstream)) != 0 )
+ while ( (rc = ov_read(&vf, buf, sizeof (buf), bigendian, 2, 1, &bitstream)) != 0 )
{
if (rc > 0)
{
retval = new FSOUND_SAMPLE;
retval->bid = bid;
retval->mode = FSOUND_LOOP_OFF;
+ retval->is2d = (mode == FSOUND_2D);
+ retval->name = new char[strlen(name_or_data) + 1];
+ if (retval->name)
+ strcpy(retval->name, name_or_data);
}
free(data);
}
}
alDeleteBuffers(1, &sptr->bid);
+ delete[] sptr->name;
delete sptr;
}
}
return TRUE;
}
-signed char F_API OPENAL_Sample_SetMinMaxDistance(FSOUND_SAMPLE *sptr, float min, float max)
+signed char F_API OPENAL_Sample_SetMinMaxDistance(FSOUND_SAMPLE *sptr, float mindist, float maxdist)
{
if (!initialized) return FALSE;
if (sptr == NULL) return FALSE;
- // !!! FIXME: write me
+ sptr->min_distance = mindist;
+ // we ignore maxdist. It's not really important to this game, and the
+ // FMOD docs suggest that it's worthless anyhow.
+
+ // recalc sources to see if we need to adjust attenuation.
+ for (int i = 0; i < num_channels; i++)
+ {
+ if (channels[i].sample == sptr)
+ {
+ const float *p = channels[i].position;
+ set_channel_position(i, p[0], p[1], p[2]);
+ }
+ }
+
return 0;
}
alSourcef(channels[channel].sid, AL_PITCH, 8012.0f / 44100.0f);
else
alSourcef(channels[channel].sid, AL_PITCH, 1.0f);
- return TRUE; // ignore this for now...
+ return TRUE;
}
signed char F_API OPENAL_SetVolume(int channel, int vol)
{
if (!initialized) return FALSE;
+
+ if (channel == FSOUND_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 > 255)) return FALSE;
+
+ if (vol < 0) vol = 0;
+ else if (vol > 255) vol = 255;
ALfloat gain = ((ALfloat) vol) / 255.0f;
alSourcef(channels[channel].sid, AL_GAIN, gain);
return TRUE;
signed char F_API OPENAL_SetPaused(int channel, signed char paused)
{
if (!initialized) return FALSE;
+
+ if (channel == FSOUND_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;
signed char F_API OPENAL_StopSound(int channel)
{
if (!initialized) return FALSE;
+
+ if (channel == FSOUND_ALL)
+ {
+ for (int i = 0; i < num_channels; i++)
+ OPENAL_StopSound(i);
+ return TRUE;
+ }
+
if ((channel < 0) || (channel >= num_channels)) return FALSE;
alSourceStop(channels[channel].sid);
+ channels[channel].startpaused = false;
return TRUE;
}
FSOUND_STREAM * F_API OPENAL_Stream_Open(const char *name_or_data, unsigned int mode, int offset, int length)
{
- return OPENAL_Sample_Load(FSOUND_FREE, name_or_data, mode, offset, length)
+ return (FSOUND_STREAM *) OPENAL_Sample_Load(FSOUND_FREE, name_or_data, mode, offset, length);
}
signed char F_API OPENAL_Stream_Close(FSOUND_STREAM *stream)
{
- OPENAL_Sample_Free(stream);
+ OPENAL_Sample_Free((FSOUND_SAMPLE *) stream);
}
FSOUND_SAMPLE * F_API OPENAL_Stream_GetSample(FSOUND_STREAM *stream)
{
if (!initialized) return NULL;
- return NULL; // this is wrong, but it works for Lugaru 1.
+ return (FSOUND_SAMPLE *) stream;
}
int F_API OPENAL_Stream_PlayEx(int channel, FSOUND_STREAM *stream, FSOUND_DSPUNIT *dsp, signed char startpaused)
{
- return OPENAL_PlaySoundEx(channel, stream, dsp, startpaused);
+ return OPENAL_PlaySoundEx(channel, (FSOUND_SAMPLE *) stream, dsp, startpaused);
}
signed char F_API OPENAL_Stream_Stop(FSOUND_STREAM *stream)
if (!initialized) return FALSE;
for (int i = 0; i < num_channels; i++)
{
- if (channels[i].sample == stream)
+ if (channels[i].sample == (FSOUND_SAMPLE *) stream)
{
alSourceStop(channels[i].sid);
channels[i].startpaused = false;
signed char F_API OPENAL_Stream_SetMode(FSOUND_STREAM *stream, unsigned int mode)
{
- return OPENAL_Sample_SetMode(stream, mode);
+ return OPENAL_Sample_SetMode((FSOUND_SAMPLE *) stream, mode);
}
void F_API OPENAL_Update()
projects / lugaru.git / blobdiff