alc/backends/base.cpp

   1
   2 #include "config.h"
   3
   4 #include "base.h"
   5
   6 #include <algorithm>
   7 #include <array>
   8 #include <atomic>
   9
  10 #include "core/devformat.h"
  11
  12
  13 namespace al {
  14
  15 backend_exception::backend_exception(backend_error code, const char *msg, ...) : mErrorCode{code}
  16 {
  17     /* NOLINTBEGIN(*-array-to-pointer-decay) */
  18     std::va_list args;
  19     va_start(args, msg);
  20     setMessage(msg, args);
  21     va_end(args);
  22     /* NOLINTEND(*-array-to-pointer-decay) */
  23 }
  24 backend_exception::~backend_exception() = default;
  25
  26 } // namespace al
  27
  28
  29 bool BackendBase::reset()
  30 { throw al::backend_exception{al::backend_error::DeviceError, "Invalid BackendBase call"}; }
  31
  32 void BackendBase::captureSamples(std::byte*, uint)
  33 { }
  34
  35 uint BackendBase::availableSamples()
  36 { return 0; }
  37
  38 ClockLatency BackendBase::getClockLatency()
  39 {
  40     ClockLatency ret{};
  41
  42     uint refcount;
  43     do {
  44         refcount = mDevice->waitForMix();
  45         ret.ClockTime = mDevice->getClockTime();
  46         std::atomic_thread_fence(std::memory_order_acquire);
  47     } while(refcount != mDevice->mMixCount.load(std::memory_order_relaxed));
  48
  49     /* NOTE: The device will generally have about all but one periods filled at
  50      * any given time during playback. Without a more accurate measurement from
  51      * the output, this is an okay approximation.
  52      */
  53     ret.Latency = std::chrono::seconds{mDevice->BufferSize - mDevice->UpdateSize};
  54     ret.Latency /= mDevice->Frequency;
  55
  56     return ret;
  57 }
  58
  59 void BackendBase::setDefaultWFXChannelOrder() const
  60 {
  61     mDevice->RealOut.ChannelIndex.fill(InvalidChannelIndex);
  62
  63     switch(mDevice->FmtChans)
  64     {
  65     case DevFmtMono:
  66         mDevice->RealOut.ChannelIndex[FrontCenter] = 0;
  67         break;
  68     case DevFmtStereo:
  69         mDevice->RealOut.ChannelIndex[FrontLeft]  = 0;
  70         mDevice->RealOut.ChannelIndex[FrontRight] = 1;
  71         break;
  72     case DevFmtQuad:
  73         mDevice->RealOut.ChannelIndex[FrontLeft]  = 0;
  74         mDevice->RealOut.ChannelIndex[FrontRight] = 1;
  75         mDevice->RealOut.ChannelIndex[BackLeft]   = 2;
  76         mDevice->RealOut.ChannelIndex[BackRight]  = 3;
  77         break;
  78     case DevFmtX51:
  79         mDevice->RealOut.ChannelIndex[FrontLeft]   = 0;
  80         mDevice->RealOut.ChannelIndex[FrontRight]  = 1;
  81         mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
  82         mDevice->RealOut.ChannelIndex[LFE]         = 3;
  83         mDevice->RealOut.ChannelIndex[SideLeft]    = 4;
  84         mDevice->RealOut.ChannelIndex[SideRight]   = 5;
  85         break;
  86     case DevFmtX61:
  87         mDevice->RealOut.ChannelIndex[FrontLeft]   = 0;
  88         mDevice->RealOut.ChannelIndex[FrontRight]  = 1;
  89         mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
  90         mDevice->RealOut.ChannelIndex[LFE]         = 3;
  91         mDevice->RealOut.ChannelIndex[BackCenter]  = 4;
  92         mDevice->RealOut.ChannelIndex[SideLeft]    = 5;
  93         mDevice->RealOut.ChannelIndex[SideRight]   = 6;
  94         break;
  95     case DevFmtX71:
  96         mDevice->RealOut.ChannelIndex[FrontLeft]   = 0;
  97         mDevice->RealOut.ChannelIndex[FrontRight]  = 1;
  98         mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
  99         mDevice->RealOut.ChannelIndex[LFE]         = 3;
 100         mDevice->RealOut.ChannelIndex[BackLeft]    = 4;
 101         mDevice->RealOut.ChannelIndex[BackRight]   = 5;
 102         mDevice->RealOut.ChannelIndex[SideLeft]    = 6;
 103         mDevice->RealOut.ChannelIndex[SideRight]   = 7;
 104         break;
 105     case DevFmtX714:
 106         mDevice->RealOut.ChannelIndex[FrontLeft]     = 0;
 107         mDevice->RealOut.ChannelIndex[FrontRight]    = 1;
 108         mDevice->RealOut.ChannelIndex[FrontCenter]   = 2;
 109         mDevice->RealOut.ChannelIndex[LFE]           = 3;
 110         mDevice->RealOut.ChannelIndex[BackLeft]      = 4;
 111         mDevice->RealOut.ChannelIndex[BackRight]     = 5;
 112         mDevice->RealOut.ChannelIndex[SideLeft]      = 6;
 113         mDevice->RealOut.ChannelIndex[SideRight]     = 7;
 114         mDevice->RealOut.ChannelIndex[TopFrontLeft]  = 8;
 115         mDevice->RealOut.ChannelIndex[TopFrontRight] = 9;
 116         mDevice->RealOut.ChannelIndex[TopBackLeft]   = 10;
 117         mDevice->RealOut.ChannelIndex[TopBackRight]  = 11;
 118         break;
 119     case DevFmtX7144:
 120         mDevice->RealOut.ChannelIndex[FrontLeft]        = 0;
 121         mDevice->RealOut.ChannelIndex[FrontRight]       = 1;
 122         mDevice->RealOut.ChannelIndex[FrontCenter]      = 2;
 123         mDevice->RealOut.ChannelIndex[LFE]              = 3;
 124         mDevice->RealOut.ChannelIndex[BackLeft]         = 4;
 125         mDevice->RealOut.ChannelIndex[BackRight]        = 5;
 126         mDevice->RealOut.ChannelIndex[SideLeft]         = 6;
 127         mDevice->RealOut.ChannelIndex[SideRight]        = 7;
 128         mDevice->RealOut.ChannelIndex[TopFrontLeft]     = 8;
 129         mDevice->RealOut.ChannelIndex[TopFrontRight]    = 9;
 130         mDevice->RealOut.ChannelIndex[TopBackLeft]      = 10;
 131         mDevice->RealOut.ChannelIndex[TopBackRight]     = 11;
 132         mDevice->RealOut.ChannelIndex[BottomFrontLeft]  = 12;
 133         mDevice->RealOut.ChannelIndex[BottomFrontRight] = 13;
 134         mDevice->RealOut.ChannelIndex[BottomBackLeft]   = 14;
 135         mDevice->RealOut.ChannelIndex[BottomBackRight]  = 15;
 136         break;
 137     case DevFmtX3D71:
 138         mDevice->RealOut.ChannelIndex[FrontLeft]   = 0;
 139         mDevice->RealOut.ChannelIndex[FrontRight]  = 1;
 140         mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
 141         mDevice->RealOut.ChannelIndex[LFE]         = 3;
 142         mDevice->RealOut.ChannelIndex[Aux0]        = 4;
 143         mDevice->RealOut.ChannelIndex[Aux1]        = 5;
 144         mDevice->RealOut.ChannelIndex[SideLeft]    = 6;
 145         mDevice->RealOut.ChannelIndex[SideRight]   = 7;
 146         break;
 147     case DevFmtAmbi3D:
 148         break;
 149     }
 150 }
 151
 152 void BackendBase::setDefaultChannelOrder() const
 153 {
 154     mDevice->RealOut.ChannelIndex.fill(InvalidChannelIndex);
 155
 156     switch(mDevice->FmtChans)
 157     {
 158     case DevFmtX51:
 159         mDevice->RealOut.ChannelIndex[FrontLeft]   = 0;
 160         mDevice->RealOut.ChannelIndex[FrontRight]  = 1;
 161         mDevice->RealOut.ChannelIndex[SideLeft]    = 2;
 162         mDevice->RealOut.ChannelIndex[SideRight]   = 3;
 163         mDevice->RealOut.ChannelIndex[FrontCenter] = 4;
 164         mDevice->RealOut.ChannelIndex[LFE]         = 5;
 165         return;
 166     case DevFmtX71:
 167         mDevice->RealOut.ChannelIndex[FrontLeft]   = 0;
 168         mDevice->RealOut.ChannelIndex[FrontRight]  = 1;
 169         mDevice->RealOut.ChannelIndex[BackLeft]    = 2;
 170         mDevice->RealOut.ChannelIndex[BackRight]   = 3;
 171         mDevice->RealOut.ChannelIndex[FrontCenter] = 4;
 172         mDevice->RealOut.ChannelIndex[LFE]         = 5;
 173         mDevice->RealOut.ChannelIndex[SideLeft]    = 6;
 174         mDevice->RealOut.ChannelIndex[SideRight]   = 7;
 175         return;
 176     case DevFmtX714:
 177         mDevice->RealOut.ChannelIndex[FrontLeft]     = 0;
 178         mDevice->RealOut.ChannelIndex[FrontRight]    = 1;
 179         mDevice->RealOut.ChannelIndex[BackLeft]      = 2;
 180         mDevice->RealOut.ChannelIndex[BackRight]     = 3;
 181         mDevice->RealOut.ChannelIndex[FrontCenter]   = 4;
 182         mDevice->RealOut.ChannelIndex[LFE]           = 5;
 183         mDevice->RealOut.ChannelIndex[SideLeft]      = 6;
 184         mDevice->RealOut.ChannelIndex[SideRight]     = 7;
 185         mDevice->RealOut.ChannelIndex[TopFrontLeft]  = 8;
 186         mDevice->RealOut.ChannelIndex[TopFrontRight] = 9;
 187         mDevice->RealOut.ChannelIndex[TopBackLeft]   = 10;
 188         mDevice->RealOut.ChannelIndex[TopBackRight]  = 11;
 189         break;
 190     case DevFmtX7144:
 191         mDevice->RealOut.ChannelIndex[FrontLeft]        = 0;
 192         mDevice->RealOut.ChannelIndex[FrontRight]       = 1;
 193         mDevice->RealOut.ChannelIndex[BackLeft]         = 2;
 194         mDevice->RealOut.ChannelIndex[BackRight]        = 3;
 195         mDevice->RealOut.ChannelIndex[FrontCenter]      = 4;
 196         mDevice->RealOut.ChannelIndex[LFE]              = 5;
 197         mDevice->RealOut.ChannelIndex[SideLeft]         = 6;
 198         mDevice->RealOut.ChannelIndex[SideRight]        = 7;
 199         mDevice->RealOut.ChannelIndex[TopFrontLeft]     = 8;
 200         mDevice->RealOut.ChannelIndex[TopFrontRight]    = 9;
 201         mDevice->RealOut.ChannelIndex[TopBackLeft]      = 10;
 202         mDevice->RealOut.ChannelIndex[TopBackRight]     = 11;
 203         mDevice->RealOut.ChannelIndex[BottomFrontLeft]  = 12;
 204         mDevice->RealOut.ChannelIndex[BottomFrontRight] = 13;
 205         mDevice->RealOut.ChannelIndex[BottomBackLeft]   = 14;
 206         mDevice->RealOut.ChannelIndex[BottomBackRight]  = 15;
 207         break;
 208     case DevFmtX3D71:
 209         mDevice->RealOut.ChannelIndex[FrontLeft]   = 0;
 210         mDevice->RealOut.ChannelIndex[FrontRight]  = 1;
 211         mDevice->RealOut.ChannelIndex[Aux0]        = 2;
 212         mDevice->RealOut.ChannelIndex[Aux1]        = 3;
 213         mDevice->RealOut.ChannelIndex[FrontCenter] = 4;
 214         mDevice->RealOut.ChannelIndex[LFE]         = 5;
 215         mDevice->RealOut.ChannelIndex[SideLeft]    = 6;
 216         mDevice->RealOut.ChannelIndex[SideRight]   = 7;
 217         return;
 218
 219     /* Same as WFX order */
 220     case DevFmtMono:
 221     case DevFmtStereo:
 222     case DevFmtQuad:
 223     case DevFmtX61:
 224     case DevFmtAmbi3D:
 225         setDefaultWFXChannelOrder();
 226         break;
 227     }
 228 }