X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=Source%2Fopenal_wrapper.cpp;h=488a371c0f160df7b9e0ed93584df87a6dc18678;hb=b647e4eb105d00bdbf2c8e39b5ae3cf7700c08aa;hp=a7bce97aa7ca508fcb84fff213bd24a80b362885;hpb=54386b13c746c1a8423b9549d0cfd922aae9a8f7;p=lugaru.git

diff --git a/Source/openal_wrapper.cpp b/Source/openal_wrapper.cpp
index a7bce97..488a371 100644
--- a/Source/openal_wrapper.cpp
+++ b/Source/openal_wrapper.cpp
@@ -92,28 +92,94 @@ typedef struct
     ALuint sid;
     FSOUND_SAMPLE *sample;
     bool startpaused;
+    float position[3];
 } OPENAL_Channels;
 
 typedef struct FSOUND_SAMPLE
 {
+    char *name;
     ALuint bid;  // buffer id.
     int mode;
+    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)
@@ -122,9 +188,10 @@ signed char F_API OPENAL_3D_SetAttributes(int channel, const float *pos, const f
     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;
 }
 
@@ -166,10 +233,14 @@ signed char F_API OPENAL_Init(int mixrate, int maxsoftwarechannels, unsigned int
     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];
@@ -268,11 +339,12 @@ int F_API OPENAL_PlaySoundEx(int channel, FSOUND_SAMPLE *sptr, FSOUND_DSPUNIT *d
     }
 
     if ((channel < 0) || (channel >= num_channels)) return -1;
-    ALint state = 0;
     alSourceStop(channels[channel].sid);
     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);
@@ -282,6 +354,12 @@ int F_API OPENAL_PlaySoundEx(int channel, FSOUND_SAMPLE *sptr, FSOUND_DSPUNIT *d
 
 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);
@@ -297,6 +375,7 @@ static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, AL
 
     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"))
     {
@@ -315,6 +394,7 @@ static void *decode_to_pcm(const char *_fname, ALenum &format, ALsizei &size, AL
         }
         return retval;
     }
+    #endif
 
     // Uncompress and feed to the AL.
     OggVorbis_File vf;
@@ -337,7 +417,7 @@ 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), 0, 2, 1, &bitstream)) != 0 )
+        while ( (rc = ov_read(&vf, buf, sizeof (buf), bigendian, 2, 1, &bitstream)) != 0 )
         {
             if (rc > 0)
             {
@@ -392,6 +472,10 @@ FSOUND_SAMPLE * F_API OPENAL_Sample_Load(int index, const char *name_or_data, un
         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);
@@ -413,6 +497,7 @@ void F_API OPENAL_Sample_Free(FSOUND_SAMPLE *sptr)
             }
         }
         alDeleteBuffers(1, &sptr->bid);
+        delete[] sptr->name;
         delete sptr;
     }
 }
@@ -420,31 +505,66 @@ void F_API OPENAL_Sample_Free(FSOUND_SAMPLE *sptr)
 signed char F_API OPENAL_Sample_SetMode(FSOUND_SAMPLE *sptr, unsigned int mode)
 {
     if (!initialized) return FALSE;
-    if (mode != FSOUND_LOOP_NORMAL) return FALSE;
+    if ((mode != FSOUND_LOOP_NORMAL) && (mode != FSOUND_LOOP_OFF)) return FALSE;
     if (!sptr) return FALSE;
     sptr->mode = mode;
     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;
 }
 
 signed char F_API OPENAL_SetFrequency(int channel, int freq)
 {
     if (!initialized) return FALSE;
-    return TRUE;  // ignore this for now...
+    if (channel == FSOUND_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(channels[channel].sid, AL_PITCH, 8012.0f / 44100.0f);
+    else
+        alSourcef(channels[channel].sid, AL_PITCH, 1.0f);
+    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;
@@ -453,6 +573,14 @@ signed char F_API OPENAL_SetVolume(int channel, int vol)
 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;
@@ -481,45 +609,58 @@ void F_API OPENAL_SetSFXMasterVolume(int volume)
 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)
 {
-    if (!initialized) return NULL;
-    return 0;
+    return (FSOUND_STREAM *) OPENAL_Sample_Load(FSOUND_FREE, name_or_data, mode, offset, length);
 }
 
 signed char F_API OPENAL_Stream_Close(FSOUND_STREAM *stream)
 {
-    if (!initialized) return FALSE;
-    return 0;
+    OPENAL_Sample_Free((FSOUND_SAMPLE *) stream);
 }
 
 FSOUND_SAMPLE * F_API OPENAL_Stream_GetSample(FSOUND_STREAM *stream)
 {
     if (!initialized) return NULL;
-    return 0;
+    return (FSOUND_SAMPLE *) stream;
 }
 
 int F_API OPENAL_Stream_PlayEx(int channel, FSOUND_STREAM *stream, FSOUND_DSPUNIT *dsp, signed char startpaused)
 {
-    if (!initialized) return -1;
-    return 0;
+    return OPENAL_PlaySoundEx(channel, (FSOUND_SAMPLE *) stream, dsp, startpaused);
 }
 
 signed char F_API OPENAL_Stream_Stop(FSOUND_STREAM *stream)
 {
     if (!initialized) return FALSE;
-    return 0;
+    for (int i = 0; i < num_channels; i++)
+    {
+        if (channels[i].sample == (FSOUND_SAMPLE *) stream)
+        {
+            alSourceStop(channels[i].sid);
+            channels[i].startpaused = false;
+        }
+    }
+    return TRUE;
 }
 
 signed char F_API OPENAL_Stream_SetMode(FSOUND_STREAM *stream, unsigned int mode)
 {
-    if (!initialized) return FALSE;
-    return 0;
+    return OPENAL_Sample_SetMode((FSOUND_SAMPLE *) stream, mode);
 }
 
 void F_API OPENAL_Update()
@@ -528,5 +669,10 @@ void F_API OPENAL_Update()
     alcProcessContext(alcGetCurrentContext());
 }
 
+signed char F_API OPENAL_SetOutput(int outputtype)
+{
+    return TRUE;
+}
+
 #endif