| Type | Name | Values | Default value | Description |
| spark_SampleType [0..spark_MaxSamples-1] | spark_Sample |
|
|
Samples |
| spark_PresetType [0..spark_MaxPresets-1] | spark_Preset |
|
|
Presets |
| spark_SourceType [0..spark_MaxSources-1] | spark_Source |
|
|
Sources |
| DWORD | spark_Devices |
|
|
Total number of sound devices in the system. (DirectSound devices + WaveOut devices + null device) |
| DWORD | spark_DSDevices | >=0 | - |
Number of DirectSound devices. |
| DWORD | spark_WaveOutDevices | >=0 | - |
Number of WaveOut devices. |
| DWORD | spark_FirstDSDevice | >=0 | - |
Index of the first DirectSound device. |
| DWORD | spark_FirstWaveOutDevice | >=0 | - |
Index of the first WaveOut device. |
| char* [0..spark_MaxDevices] | spark_DeviceName | - |
- |
Names of the sound devices in the system. |
| DWORD | spark_DeviceID |
|
|
Index of device used for playback. |
| BYTE | spark_OutputMode | 0-4 | 1 (stereo) | Mode of the sound engine.(0: mono, 1:stereo, 2:surround, 3:DirectSound3D, 4:DirectSound3D + EAX 1.0) |
| DWORD | spark_OutputBufSize | 10-5000 | 150 | Size of the output buffer in milliseconds. The smaller the buffer, the faster the response when you change the frequency or volume of the sound sources. However, decreasing the buffer size will increase the chance of random pops and clicks in the output, and the sound may get cut. |
| BYTE | spark_OutputBufSegments | 2,4,8 | 4 | Segments of the output buffer (2/4/8). |
| BYTE | spark_GlobalVolume | 0-64 | 64 | Global volume of the sound engine. spark_UpdateFrame must be called after changing its value. |
| BYTE | spark_Interpolation | 0-1 | 1 |
If non-zero, turns on linear interpolation in mono, stereo or surround mode for better quality.. |
| DWORD | spark_OutputMixFreq | 8000-96000 | 44100 | Output mixing frequency of the sound engine. |
| BYTE | spark_RampMode |
|
|
Mode of the volume ramping. |
| DWORD | spark_RampLength |
|
|
Length of the volume ramps. |
| BYTE | spark_DebugInfo |
|
|
When non-zero, enables logging in "spark.log". |
| DWORD | spark_OutputPriority |
|
|
The priority class of the output module. |
| DWORD | spark_StereoSeparation |
|
|
Stereo separation in percents. |
| DWORD | spark_SurroundSeparation |
|
|
Surround separation in percents. (Only in surround mode.) |
| DWORD | spark_SurroundDelay | 1-500 | 20 | Surround delay in milliseconds. (Only in surround mode.) |
| BYTE | spark_EnableOutputFX |
|
|
Enables output effects in mono, stereo and surround mode. |
| BYTE | spark_DisableMaxVirt | 0-1 | 0 | If non-zero, disables advanced 3D virtualization in DirectSound3D modes. This can improve the speed of the engine on some soundcards. |
| BYTE | spark_SwapLR | 0-1 | 0 | If non-zero, swaps left/right channels. |
| BYTE | spark_SwapFS | 0-1 | 0 | If non-zero, swaps front/rear channels. |
Remarks:
The spark_MaxSamples,spark_MaxPresets and spark_MaxSources constants define the maximum number of samples, presets és sources. (Currently 128, 256 and 384.)
After altering the values of spark_DeviceID,spark_OutputMode,spark_Interpolation, spark_OutputMixFreq, spark_RampMode, spark_RampLength,and spark_EnableOutputFX, spark_UpdateSoundSystem must be called to validate the changes.