diff options
Diffstat (limited to 'Alc')
| -rw-r--r-- | Alc/panning.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/Alc/panning.c b/Alc/panning.c index 21bb7d8e..1f6270f2 100644 --- a/Alc/panning.c +++ b/Alc/panning.c @@ -30,6 +30,7 @@ #include "AL/al.h" #include "AL/alc.h" #include "alu.h" +#include "bool.h" void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat elevation, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS]) @@ -108,6 +109,188 @@ typedef struct ChannelMap { ChannelConfig Config; } ChannelMap; +static bool LoadChannelSetup(ALCdevice *device) +{ + static const char *mono_names[1] = { + "front-center" + }, *stereo_names[2] = { + "front-left", "front-right" + }, *quad_names[4] = { + "front-left", "front-right", + "back-left", "back-right" + }, *surround51_names[6] = { + "front-left", "front-right", + "front-center", "lfe", + "side-left", "side-right" + }, *surround51rear_names[6] = { + "front-left", "front-right", + "front-center", "lfe", + "back-left", "back-right" + }, *surround61_names[7] = { + "front-left", "front-right", + "front-center", "lfe", "back-center", + "side-left", "side-right" + }, *surround71_names[8] = { + "front-left", "front-right", + "front-center", "lfe", + "back-left", "back-right", + "side-left", "side-right" + }; + ChannelMap chanmap[MAX_OUTPUT_CHANNELS] = {}; + const char **channames = NULL; + const char *layout = NULL; + size_t count = 0; + size_t i; + + switch(device->FmtChans) + { + case DevFmtMono: + channames = mono_names; + layout = "mono"; + count = 1; + break; + case DevFmtStereo: + channames = stereo_names; + layout = "stereo"; + count = 2; + break; + case DevFmtQuad: + channames = quad_names; + layout = "quad"; + count = 4; + break; + case DevFmtX51: + channames = surround51_names; + layout = "surround51"; + count = 6; + break; + case DevFmtX51Rear: + channames = surround51rear_names; + layout = "surround51rear"; + count = 6; + break; + case DevFmtX61: + channames = surround61_names; + layout = "surround61"; + count = 7; + break; + case DevFmtX71: + channames = surround71_names; + layout = "surround71"; + count = 8; + break; + } + + if(!layout) + return false; + else + { + char name[32]; + snprintf(name, sizeof(name), "%s/enable", layout); + if(!GetConfigValueBool("layouts", name, 0)) + return false; + } + + for(i = 0;i < count;i++) + { + const char *channame = channames[i]; + char chanlayout[32]; + const char *value; + int props; + size_t j; + + snprintf(chanlayout, sizeof(chanlayout), "%s/%s", layout, channame); + if(!ConfigValueStr("layouts", chanlayout, &value)) + { + ERR("Missing channel %s\n", channame); + return false; + } + props = sscanf(value, " %f %f ; %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f ; %f %f %f %f", + &chanmap[i].Config.Angle, &chanmap[i].Config.Elevation, + &chanmap[i].Config.HOACoeff[0], &chanmap[i].Config.HOACoeff[1], &chanmap[i].Config.HOACoeff[2], + &chanmap[i].Config.HOACoeff[3], &chanmap[i].Config.HOACoeff[4], &chanmap[i].Config.HOACoeff[5], + &chanmap[i].Config.HOACoeff[6], &chanmap[i].Config.HOACoeff[7], &chanmap[i].Config.HOACoeff[8], + &chanmap[i].Config.HOACoeff[9], &chanmap[i].Config.HOACoeff[10], &chanmap[i].Config.HOACoeff[11], + &chanmap[i].Config.HOACoeff[12], &chanmap[i].Config.HOACoeff[13], &chanmap[i].Config.HOACoeff[14], + &chanmap[i].Config.HOACoeff[15], &chanmap[i].Config.FOACoeff[0], &chanmap[i].Config.FOACoeff[1], + &chanmap[i].Config.FOACoeff[2], &chanmap[i].Config.FOACoeff[3]); + if(props == 0) + { + ERR("Failed to parse channel "SZFMT" properties\n", i); + return false; + } + + if(strcmp(channame, "front-left") == 0) + chanmap[i].ChanName = FrontLeft; + else if(strcmp(channame, "front-right") == 0) + chanmap[i].ChanName = FrontRight; + else if(strcmp(channame, "front-center") == 0) + chanmap[i].ChanName = FrontCenter; + else if(strcmp(channame, "lfe") == 0) + chanmap[i].ChanName = LFE; + else if(strcmp(channame, "back-left") == 0) + chanmap[i].ChanName = BackLeft; + else if(strcmp(channame, "back-right") == 0) + chanmap[i].ChanName = BackRight; + else if(strcmp(channame, "back-center") == 0) + chanmap[i].ChanName = BackCenter; + else if(strcmp(channame, "side-left") == 0) + chanmap[i].ChanName = SideLeft; + else if(strcmp(channame, "side-right") == 0) + chanmap[i].ChanName = SideRight; + + if(chanmap[i].ChanName == LFE && props < 22) + { + if(props > 1 || chanmap[i].Config.Angle != 0.0f) + WARN("Unexpected elements for LFE channel\n"); + chanmap[i].Config.Angle = 0.0f; + chanmap[i].Config.Elevation = 0.0f; + for(j = 0;j < MAX_AMBI_COEFFS;j++) + chanmap[i].Config.HOACoeff[j] = 0.0f; + for(j = 0;j < 4;j++) + chanmap[i].Config.FOACoeff[j] = 0.0f; + } + else if(props < 22) + { + ERR("Failed to parse channel %s elements (expected 22, got %d\n", channame, props); + return false; + } + else + { + if(!(chanmap[i].Config.Angle >= -180.0f && chanmap[i].Config.Angle <= 180.0f)) + { + ERR("Channel %s angle is out of range (%f not within -180...+180 degrees)\n", channame, chanmap[i].Config.Angle); + return false; + } + chanmap[i].Config.Angle = DEG2RAD(chanmap[i].Config.Angle); + + if(!(chanmap[i].Config.Elevation >= -180.0f && chanmap[i].Config.Elevation <= 180.0f)) + { + ERR("Channel %s elevation is out of range (%f not within -180...+180 degrees)\n", channame, chanmap[i].Config.Angle); + return false; + } + chanmap[i].Config.Elevation = DEG2RAD(chanmap[i].Config.Elevation); + } + } + + for(i = 0;i < MAX_OUTPUT_CHANNELS && device->ChannelName[i] != InvalidChannel;i++) + { + size_t j; + for(j = 0;j < count;j++) + { + if(device->ChannelName[i] == chanmap[j].ChanName) + { + device->Channel[i] = chanmap[j].Config; + break; + } + } + if(j == count) + ERR("Failed to match channel "SZFMT" (label %d) in config\n", i, device->ChannelName[i]); + } + device->NumChannels = i; + return true; +} + ALvoid aluInitPanning(ALCdevice *device) { static const ChannelMap MonoCfg[1] = { @@ -159,6 +342,9 @@ ALvoid aluInitPanning(ALCdevice *device) memset(device->Channel, 0, sizeof(device->Channel)); device->NumChannels = 0; + if(LoadChannelSetup(device)) + return; + switch(device->FmtChans) { case DevFmtMono: |