int dsound_set_buffer_3d_minimum_distance ( LPDIRECTSOUND3DBUFFER buffer, float distance )
{
unsigned int
dsrval;
#ifdef _WIN32
dsrval = IDirectSound3DBuffer_SetMinDistance ( buffer, distance, DS3D_DEFERRED );
if ( dsrval != DS_OK )
{
debug_log ( "Unable to set min distance of 3d buffer: %s", get_dsound_error_message ( dsrval ) );
return ( FALSE );
}
else
{
return ( TRUE );
}
#endif
}
int I2_PlaySound(void *data, boolean play3d, sound3d_t *desc, int pan)
{
sampleheader_t *header = data;
byte *sample = (byte*) data + sizeof(sampleheader_t);
sndsource_t *sndbuf;
void *writePtr1=NULL, *writePtr2=NULL;
DWORD writeBytes1, writeBytes2;
int samplelen = header->length, freq = header->frequency, bits = 8;
// Can we play sounds?
if(!initOk || data == NULL) return 0; // Sorry...
if(snd_Resample != 1 && snd_Resample != 2 && snd_Resample != 4)
{
ST_Message("I2_PlaySound: invalid resample factor.\n");
snd_Resample = 1;
}
// Get a buffer that's doing nothing.
sndbuf = I2_GetFreeSource(play3d);
sndbuf->startTime = I_GetTime();
// Prepare the audio data.
if(snd_Resample == 1 && !snd_16bits) // Play sounds as normal?
{
// No resampling necessary.
sndbuf->freq = header->frequency;
}
else
{
// Resample the sound.
sample = I_Resample8bitSound(sample, header->length, freq,
snd_Resample, snd_16bits, &samplelen);
if(snd_16bits) bits = 16;
freq *= snd_Resample;
sndbuf->freq = freq;
}
if(sndbuf->source)
{
// Release the old source.
I2_KillSource(sndbuf);
}
// Create a new source.
if(FAILED(hr = createDSBuffer(play3d? DSBCAPS_CTRLVOLUME | DSBCAPS_CTRLFREQUENCY
| DSBCAPS_CTRL3D | DSBCAPS_MUTE3DATMAXDISTANCE | DSBCAPS_STATIC
: DSBCAPS_CTRLPAN | DSBCAPS_CTRLVOLUME | DSBCAPS_CTRLFREQUENCY
| DSBCAPS_STATIC,
header->length * snd_Resample, freq, bits, 1, &sndbuf->source)))
{
ST_Message("I2_PlaySound: couldn't create a new buffer (result = %d).\n", hr & 0xffff);
memset(sndbuf, 0, sizeof(*sndbuf));
return 0;
}
if(play3d)
{
// Query the 3D interface.
if(FAILED(hr = IDirectSoundBuffer_QueryInterface(sndbuf->source, &IID_IDirectSound3DBuffer,
&sndbuf->source3D)))
{
ST_Message("I2_PlaySound: couldn't get 3D buffer interface (result = %d).\n", hr & 0xffff);
IDirectSoundBuffer_Release(sndbuf->source);
memset(sndbuf, 0, sizeof(*sndbuf));
return 0;
}
}
// Lock the buffer.
if(FAILED(hr = IDirectSoundBuffer_Lock(sndbuf->source, 0, samplelen,
&writePtr1, &writeBytes1, &writePtr2, &writeBytes2, 0)))
{
I_error("I2_PlaySound: couldn't lock source (result = %d).\n", hr & 0xffff);
}
// Copy the data over.
memcpy(writePtr1, sample, writeBytes1);
if(writePtr2) memcpy(writePtr2, (char*) sample + writeBytes1, writeBytes2);
// Unlock the buffer.
if(FAILED(hr = IDirectSoundBuffer_Unlock(sndbuf->source, writePtr1, writeBytes1,
writePtr2, writeBytes2)))
{
I_error("I2_PlaySound: couldn't unlock source (result = %d).\n", hr & 0xffff);
return 0;
}
if(play3d)
{
// Set the 3D parameters of the source.
if(desc->flags & DDSOUNDF_VERY_LOUD)
{
// You can hear this from very far away (e.g. thunderclap).
IDirectSound3DBuffer_SetMinDistance(sndbuf->source3D, 10000, DS3D_DEFERRED);
IDirectSound3DBuffer_SetMaxDistance(sndbuf->source3D, 20000, DS3D_DEFERRED);
}
else
{
IDirectSound3DBuffer_SetMinDistance(sndbuf->source3D, 100, DS3D_DEFERRED);
IDirectSound3DBuffer_SetMaxDistance(sndbuf->source3D, MAX_SND_DIST, DS3D_DEFERRED);
}
if(desc->flags & DDSOUNDF_LOCAL)
IDirectSound3DBuffer_SetMode(sndbuf->source3D, DS3DMODE_DISABLE, DS3D_DEFERRED);
}
else
{
// If playing in 2D mode, set the pan.
I2_SetPan(sndbuf, pan/1000.0f);
}
I2_UpdateSource(sndbuf, desc);
// Start playing the buffer.
if(FAILED(hr = IDirectSoundBuffer_Play(sndbuf->source, 0, 0, 0)))
{
I_error("I2_PlaySound: couldn't start source (result = %d).\n", hr & 0xffff);
return 0;
}
// Return the handle to the sound source.
return (sndbuf->id = idGen++);
}
