diff options
Diffstat (limited to 'OpenAL32/Include/alMain.h')
| -rw-r--r-- | OpenAL32/Include/alMain.h | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h index 2ce98745..6e17651f 100644 --- a/OpenAL32/Include/alMain.h +++ b/OpenAL32/Include/alMain.h @@ -380,7 +380,7 @@ extern "C" { struct Hrtf; struct HrtfEntry; -struct OutputLimiter; +struct Compressor; #define DEFAULT_OUTPUT_RATE (44100) @@ -783,7 +783,7 @@ struct ALCdevice_struct ALsizei NumChannels; } RealOut; - struct OutputLimiter *Limiter; + struct Compressor *Limiter; /* The average speaker distance as determined by the ambdec configuration * (or alternatively, by the NFC-HOA reference delay). Only used for NFC. @@ -1047,6 +1047,34 @@ vector_al_string SearchDataFiles(const char *match, const char *subdir); typedef ALfloat ALfloatBUFFERSIZE[BUFFERSIZE]; typedef ALfloat ALfloat2[2]; + +/* The compressor requires the following information for proper + * initialization: + * + * PreGainDb - Gain applied before detection (in dB). + * PostGainDb - Gain applied after compression (in dB). + * SummedLink - Whether to use summed (true) or maxed (false) linking. + * RmsSensing - Whether to use RMS (true) or Peak (false) sensing. + * AttackTimeMin - Minimum attack time (in seconds). + * AttackTimeMax - Maximum attack time. Automates when min != max. + * ReleaseTimeMin - Minimum release time (in seconds). + * ReleaseTimeMax - Maximum release time. Automates when min != max. + * Ratio - Compression ratio (x:1). Set to 0 for true limiter. + * ThresholdDb - Triggering threshold (in dB). + * KneeDb - Knee width (below threshold; in dB). + * SampleRate - Sample rate to process. + */ +struct Compressor *CompressorInit(const ALfloat PreGainDb, const ALfloat PostGainDb, + const ALboolean SummedLink, const ALboolean RmsSensing, const ALfloat AttackTimeMin, + const ALfloat AttackTimeMax, const ALfloat ReleaseTimeMin, const ALfloat ReleaseTimeMax, + const ALfloat Ratio, const ALfloat ThresholdDb, const ALfloat KneeDb, + const ALuint SampleRate); + +ALuint GetCompressorSampleRate(const struct Compressor *Comp); + +void ApplyCompression(struct Compressor *Comp, const ALsizei NumChans, const ALsizei SamplesToDo, + ALfloat (*restrict OutBuffer)[BUFFERSIZE]); + #ifdef __cplusplus } #endif |