diff options
Diffstat (limited to 'Alc/panning.c')
| -rw-r--r-- | Alc/panning.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Alc/panning.c b/Alc/panning.c index d1cb6df4..fb510f1e 100644 --- a/Alc/panning.c +++ b/Alc/panning.c @@ -1006,6 +1006,9 @@ void aluInitRenderer(ALCdevice *device, ALint hrtf_id, enum HrtfRequestMode hrtf device->ChannelDelay[i].Length = 0; } + al_free(device->Stablizer); + device->Stablizer = NULL; + if(device->FmtChans != DevFmtStereo) { ALsizei speakermap[MAX_OUTPUT_CHANNELS]; @@ -1084,6 +1087,43 @@ void aluInitRenderer(ALCdevice *device, ALint hrtf_id, enum HrtfRequestMode hrtf else InitCustomPanning(device, pconf, speakermap); + /* Enable the stablizer only for formats that have front-left, front- + * right, and front-center outputs. + */ + switch(device->FmtChans) + { + case DevFmtX51: + case DevFmtX51Rear: + case DevFmtX61: + case DevFmtX71: + if(GetConfigValueBool(devname, NULL, "front-stablizer", 0)) + { + /* Initialize band-splitting filters for the front-left and + * front-right channels, with a crossover at 5khz (could be + * higher). + */ + ALfloat scale = (ALfloat)(5000.0 / device->Frequency); + FrontStablizer *stablizer = al_calloc(16, sizeof(*stablizer)); + + bandsplit_init(&stablizer->LFilter, scale); + stablizer->RFilter = stablizer->LFilter; + + /* Initialize all-pass filters for all other channels. */ + splitterap_init(&stablizer->APFilter[0], scale); + for(i = 1;i < (size_t)device->RealOut.NumChannels;i++) + stablizer->APFilter[i] = stablizer->APFilter[0]; + + device->Stablizer = stablizer; + } + break; + case DevFmtMono: + case DevFmtStereo: + case DevFmtQuad: + case DevFmtAmbi3D: + break; + } + TRACE("Front stablizer %s\n", device->Stablizer ? "enabled" : "disabled"); + ambdec_deinit(&conf); return; } |