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#include "config.h"
#include "base.h"
#include <atomic>
#include <thread>
#include "AL/al.h"
#include "alcmain.h"
#include "alexcpt.h"
#include "alnumeric.h"
#include "atomic.h"
bool BackendBase::reset()
{ throw al::backend_exception{ALC_INVALID_DEVICE, "Invalid BackendBase call"}; }
ALCenum BackendBase::captureSamples(al::byte*, ALCuint)
{ return ALC_INVALID_DEVICE; }
ALCuint BackendBase::availableSamples()
{ return 0; }
ClockLatency BackendBase::getClockLatency()
{
ClockLatency ret;
ALuint refcount;
do {
refcount = mDevice->waitForMix();
ret.ClockTime = GetDeviceClockTime(mDevice);
std::atomic_thread_fence(std::memory_order_acquire);
} while(refcount != ReadRef(mDevice->MixCount));
/* NOTE: The device will generally have about all but one periods filled at
* any given time during playback. Without a more accurate measurement from
* the output, this is an okay approximation.
*/
ret.Latency = std::max(std::chrono::seconds{mDevice->BufferSize-mDevice->UpdateSize},
std::chrono::seconds::zero());
ret.Latency /= mDevice->Frequency;
return ret;
}
void BackendBase::setDefaultWFXChannelOrder()
{
mDevice->RealOut.ChannelIndex.fill(INVALID_CHANNEL_INDEX);
switch(mDevice->FmtChans)
{
case DevFmtMono:
mDevice->RealOut.ChannelIndex[FrontCenter] = 0;
break;
case DevFmtStereo:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
break;
case DevFmtQuad:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
mDevice->RealOut.ChannelIndex[BackLeft] = 2;
mDevice->RealOut.ChannelIndex[BackRight] = 3;
break;
case DevFmtX51:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
mDevice->RealOut.ChannelIndex[LFE] = 3;
mDevice->RealOut.ChannelIndex[SideLeft] = 4;
mDevice->RealOut.ChannelIndex[SideRight] = 5;
break;
case DevFmtX51Rear:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
mDevice->RealOut.ChannelIndex[LFE] = 3;
mDevice->RealOut.ChannelIndex[BackLeft] = 4;
mDevice->RealOut.ChannelIndex[BackRight] = 5;
break;
case DevFmtX61:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
mDevice->RealOut.ChannelIndex[LFE] = 3;
mDevice->RealOut.ChannelIndex[BackCenter] = 4;
mDevice->RealOut.ChannelIndex[SideLeft] = 5;
mDevice->RealOut.ChannelIndex[SideRight] = 6;
break;
case DevFmtX71:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
mDevice->RealOut.ChannelIndex[LFE] = 3;
mDevice->RealOut.ChannelIndex[BackLeft] = 4;
mDevice->RealOut.ChannelIndex[BackRight] = 5;
mDevice->RealOut.ChannelIndex[SideLeft] = 6;
mDevice->RealOut.ChannelIndex[SideRight] = 7;
break;
case DevFmtAmbi3D:
mDevice->RealOut.ChannelIndex[Aux0] = 0;
if(mDevice->mAmbiOrder > 0)
{
mDevice->RealOut.ChannelIndex[Aux1] = 1;
mDevice->RealOut.ChannelIndex[Aux2] = 2;
mDevice->RealOut.ChannelIndex[Aux3] = 3;
}
if(mDevice->mAmbiOrder > 1)
{
mDevice->RealOut.ChannelIndex[Aux4] = 4;
mDevice->RealOut.ChannelIndex[Aux5] = 5;
mDevice->RealOut.ChannelIndex[Aux6] = 6;
mDevice->RealOut.ChannelIndex[Aux7] = 7;
mDevice->RealOut.ChannelIndex[Aux8] = 8;
}
if(mDevice->mAmbiOrder > 2)
{
mDevice->RealOut.ChannelIndex[Aux9] = 9;
mDevice->RealOut.ChannelIndex[Aux10] = 10;
mDevice->RealOut.ChannelIndex[Aux11] = 11;
mDevice->RealOut.ChannelIndex[Aux12] = 12;
mDevice->RealOut.ChannelIndex[Aux13] = 13;
mDevice->RealOut.ChannelIndex[Aux14] = 14;
mDevice->RealOut.ChannelIndex[Aux15] = 15;
}
break;
}
}
void BackendBase::setDefaultChannelOrder()
{
mDevice->RealOut.ChannelIndex.fill(INVALID_CHANNEL_INDEX);
switch(mDevice->FmtChans)
{
case DevFmtX51Rear:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
mDevice->RealOut.ChannelIndex[BackLeft] = 2;
mDevice->RealOut.ChannelIndex[BackRight] = 3;
mDevice->RealOut.ChannelIndex[FrontCenter] = 4;
mDevice->RealOut.ChannelIndex[LFE] = 5;
return;
case DevFmtX71:
mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
mDevice->RealOut.ChannelIndex[FrontRight] = 1;
mDevice->RealOut.ChannelIndex[BackLeft] = 2;
mDevice->RealOut.ChannelIndex[BackRight] = 3;
mDevice->RealOut.ChannelIndex[FrontCenter] = 4;
mDevice->RealOut.ChannelIndex[LFE] = 5;
mDevice->RealOut.ChannelIndex[SideLeft] = 6;
mDevice->RealOut.ChannelIndex[SideRight] = 7;
return;
/* Same as WFX order */
case DevFmtMono:
case DevFmtStereo:
case DevFmtQuad:
case DevFmtX51:
case DevFmtX61:
case DevFmtAmbi3D:
setDefaultWFXChannelOrder();
break;
}
}
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