🛠️🐜 Antkeeper superbuild with dependencies included
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194 lines
6.7 KiB
194 lines
6.7 KiB
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#include "config.h"
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#include "base.h"
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#include <algorithm>
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#include <array>
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#include <atomic>
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#ifdef _WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <mmreg.h>
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#include "albit.h"
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#include "core/logging.h"
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#include "aloptional.h"
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#endif
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#include "atomic.h"
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#include "core/devformat.h"
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bool BackendBase::reset()
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{ throw al::backend_exception{al::backend_error::DeviceError, "Invalid BackendBase call"}; }
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void BackendBase::captureSamples(al::byte*, uint)
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{ }
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uint BackendBase::availableSamples()
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{ return 0; }
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ClockLatency BackendBase::getClockLatency()
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{
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ClockLatency ret;
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uint refcount;
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do {
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refcount = mDevice->waitForMix();
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ret.ClockTime = GetDeviceClockTime(mDevice);
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std::atomic_thread_fence(std::memory_order_acquire);
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} while(refcount != ReadRef(mDevice->MixCount));
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/* NOTE: The device will generally have about all but one periods filled at
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* any given time during playback. Without a more accurate measurement from
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* the output, this is an okay approximation.
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*/
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ret.Latency = std::max(std::chrono::seconds{mDevice->BufferSize-mDevice->UpdateSize},
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std::chrono::seconds::zero());
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ret.Latency /= mDevice->Frequency;
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return ret;
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}
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void BackendBase::setDefaultWFXChannelOrder()
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{
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mDevice->RealOut.ChannelIndex.fill(INVALID_CHANNEL_INDEX);
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switch(mDevice->FmtChans)
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{
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case DevFmtMono:
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mDevice->RealOut.ChannelIndex[FrontCenter] = 0;
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break;
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case DevFmtStereo:
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mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
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mDevice->RealOut.ChannelIndex[FrontRight] = 1;
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break;
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case DevFmtQuad:
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mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
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mDevice->RealOut.ChannelIndex[FrontRight] = 1;
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mDevice->RealOut.ChannelIndex[BackLeft] = 2;
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mDevice->RealOut.ChannelIndex[BackRight] = 3;
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break;
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case DevFmtX51:
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mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
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mDevice->RealOut.ChannelIndex[FrontRight] = 1;
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mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
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mDevice->RealOut.ChannelIndex[LFE] = 3;
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mDevice->RealOut.ChannelIndex[SideLeft] = 4;
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mDevice->RealOut.ChannelIndex[SideRight] = 5;
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break;
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case DevFmtX61:
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mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
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mDevice->RealOut.ChannelIndex[FrontRight] = 1;
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mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
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mDevice->RealOut.ChannelIndex[LFE] = 3;
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mDevice->RealOut.ChannelIndex[BackCenter] = 4;
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mDevice->RealOut.ChannelIndex[SideLeft] = 5;
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mDevice->RealOut.ChannelIndex[SideRight] = 6;
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break;
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case DevFmtX71:
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mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
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mDevice->RealOut.ChannelIndex[FrontRight] = 1;
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mDevice->RealOut.ChannelIndex[FrontCenter] = 2;
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mDevice->RealOut.ChannelIndex[LFE] = 3;
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mDevice->RealOut.ChannelIndex[BackLeft] = 4;
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mDevice->RealOut.ChannelIndex[BackRight] = 5;
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mDevice->RealOut.ChannelIndex[SideLeft] = 6;
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mDevice->RealOut.ChannelIndex[SideRight] = 7;
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break;
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case DevFmtAmbi3D:
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break;
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}
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}
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void BackendBase::setDefaultChannelOrder()
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{
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mDevice->RealOut.ChannelIndex.fill(INVALID_CHANNEL_INDEX);
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switch(mDevice->FmtChans)
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{
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case DevFmtX51:
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mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
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mDevice->RealOut.ChannelIndex[FrontRight] = 1;
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mDevice->RealOut.ChannelIndex[SideLeft] = 2;
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mDevice->RealOut.ChannelIndex[SideRight] = 3;
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mDevice->RealOut.ChannelIndex[FrontCenter] = 4;
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mDevice->RealOut.ChannelIndex[LFE] = 5;
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return;
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case DevFmtX71:
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mDevice->RealOut.ChannelIndex[FrontLeft] = 0;
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mDevice->RealOut.ChannelIndex[FrontRight] = 1;
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mDevice->RealOut.ChannelIndex[BackLeft] = 2;
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mDevice->RealOut.ChannelIndex[BackRight] = 3;
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mDevice->RealOut.ChannelIndex[FrontCenter] = 4;
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mDevice->RealOut.ChannelIndex[LFE] = 5;
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mDevice->RealOut.ChannelIndex[SideLeft] = 6;
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mDevice->RealOut.ChannelIndex[SideRight] = 7;
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return;
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/* Same as WFX order */
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case DevFmtMono:
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case DevFmtStereo:
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case DevFmtQuad:
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case DevFmtX61:
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case DevFmtAmbi3D:
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setDefaultWFXChannelOrder();
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break;
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}
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}
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#ifdef _WIN32
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void BackendBase::setChannelOrderFromWFXMask(uint chanmask)
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{
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static constexpr uint x51{SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
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| SPEAKER_LOW_FREQUENCY | SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT};
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static constexpr uint x51rear{SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER
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| SPEAKER_LOW_FREQUENCY | SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT};
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/* Swap a 5.1 mask using the back channels for one with the sides. */
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if(chanmask == x51rear) chanmask = x51;
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auto get_channel = [](const DWORD chanbit) noexcept -> al::optional<Channel>
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{
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switch(chanbit)
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{
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case SPEAKER_FRONT_LEFT: return al::make_optional(FrontLeft);
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case SPEAKER_FRONT_RIGHT: return al::make_optional(FrontRight);
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case SPEAKER_FRONT_CENTER: return al::make_optional(FrontCenter);
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case SPEAKER_LOW_FREQUENCY: return al::make_optional(LFE);
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case SPEAKER_BACK_LEFT: return al::make_optional(BackLeft);
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case SPEAKER_BACK_RIGHT: return al::make_optional(BackRight);
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case SPEAKER_FRONT_LEFT_OF_CENTER: break;
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case SPEAKER_FRONT_RIGHT_OF_CENTER: break;
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case SPEAKER_BACK_CENTER: return al::make_optional(BackCenter);
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case SPEAKER_SIDE_LEFT: return al::make_optional(SideLeft);
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case SPEAKER_SIDE_RIGHT: return al::make_optional(SideRight);
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case SPEAKER_TOP_CENTER: return al::make_optional(TopCenter);
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case SPEAKER_TOP_FRONT_LEFT: return al::make_optional(TopFrontLeft);
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case SPEAKER_TOP_FRONT_CENTER: return al::make_optional(TopFrontCenter);
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case SPEAKER_TOP_FRONT_RIGHT: return al::make_optional(TopFrontRight);
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case SPEAKER_TOP_BACK_LEFT: return al::make_optional(TopBackLeft);
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case SPEAKER_TOP_BACK_CENTER: return al::make_optional(TopBackCenter);
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case SPEAKER_TOP_BACK_RIGHT: return al::make_optional(TopBackRight);
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}
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WARN("Unhandled WFX channel bit 0x%lx\n", chanbit);
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return al::nullopt;
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};
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const uint numchans{mDevice->channelsFromFmt()};
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uint idx{0};
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while(chanmask)
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{
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const int bit{al::countr_zero(chanmask)};
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const uint mask{1u << bit};
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chanmask &= ~mask;
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if(auto label = get_channel(mask))
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{
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mDevice->RealOut.ChannelIndex[*label] = idx;
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if(++idx == numchans) break;
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}
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}
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}
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#endif
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