🛠️🐜 Antkeeper superbuild with dependencies included
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497 lines
13 KiB
497 lines
13 KiB
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2007 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include "backends/sndio.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <thread>
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#include <functional>
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#include "alMain.h"
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#include "alu.h"
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#include "threads.h"
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#include "vector.h"
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#include "ringbuffer.h"
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#include <sndio.h>
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namespace {
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static const ALCchar sndio_device[] = "SndIO Default";
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struct SndioPlayback final : public BackendBase {
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SndioPlayback(ALCdevice *device) noexcept : BackendBase{device} { }
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~SndioPlayback() override;
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int mixerProc();
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ALCenum open(const ALCchar *name) override;
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ALCboolean reset() override;
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ALCboolean start() override;
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void stop() override;
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sio_hdl *mSndHandle{nullptr};
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al::vector<ALubyte> mBuffer;
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std::atomic<bool> mKillNow{true};
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std::thread mThread;
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static constexpr inline const char *CurrentPrefix() noexcept { return "SndioPlayback::"; }
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DEF_NEWDEL(SndioPlayback)
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};
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SndioPlayback::~SndioPlayback()
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{
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if(mSndHandle)
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sio_close(mSndHandle);
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mSndHandle = nullptr;
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}
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int SndioPlayback::mixerProc()
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{
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SetRTPriority();
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althrd_setname(MIXER_THREAD_NAME);
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const ALsizei frameSize{mDevice->frameSizeFromFmt()};
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while(!mKillNow.load(std::memory_order_acquire) &&
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mDevice->Connected.load(std::memory_order_acquire))
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{
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auto WritePtr = static_cast<ALubyte*>(mBuffer.data());
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size_t len{mBuffer.size()};
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lock();
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aluMixData(mDevice, WritePtr, len/frameSize);
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unlock();
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while(len > 0 && !mKillNow.load(std::memory_order_acquire))
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{
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size_t wrote{sio_write(mSndHandle, WritePtr, len)};
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if(wrote == 0)
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{
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ERR("sio_write failed\n");
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aluHandleDisconnect(mDevice, "Failed to write playback samples");
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break;
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}
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len -= wrote;
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WritePtr += wrote;
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}
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}
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return 0;
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}
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ALCenum SndioPlayback::open(const ALCchar *name)
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{
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if(!name)
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name = sndio_device;
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else if(strcmp(name, sndio_device) != 0)
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return ALC_INVALID_VALUE;
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mSndHandle = sio_open(nullptr, SIO_PLAY, 0);
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if(mSndHandle == nullptr)
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{
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ERR("Could not open device\n");
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return ALC_INVALID_VALUE;
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}
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mDevice->DeviceName = name;
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return ALC_NO_ERROR;
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}
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ALCboolean SndioPlayback::reset()
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{
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sio_par par;
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sio_initpar(&par);
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par.rate = mDevice->Frequency;
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par.pchan = ((mDevice->FmtChans != DevFmtMono) ? 2 : 1);
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switch(mDevice->FmtType)
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{
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case DevFmtByte:
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par.bits = 8;
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par.sig = 1;
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break;
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case DevFmtUByte:
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par.bits = 8;
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par.sig = 0;
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break;
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case DevFmtFloat:
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case DevFmtShort:
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par.bits = 16;
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par.sig = 1;
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break;
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case DevFmtUShort:
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par.bits = 16;
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par.sig = 0;
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break;
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case DevFmtInt:
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par.bits = 32;
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par.sig = 1;
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break;
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case DevFmtUInt:
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par.bits = 32;
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par.sig = 0;
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break;
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}
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par.le = SIO_LE_NATIVE;
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par.round = mDevice->UpdateSize;
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par.appbufsz = mDevice->BufferSize - mDevice->UpdateSize;
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if(!par.appbufsz) par.appbufsz = mDevice->UpdateSize;
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if(!sio_setpar(mSndHandle, &par) || !sio_getpar(mSndHandle, &par))
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{
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ERR("Failed to set device parameters\n");
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return ALC_FALSE;
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}
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if(par.bits != par.bps*8)
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{
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ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8);
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return ALC_FALSE;
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}
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mDevice->Frequency = par.rate;
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mDevice->FmtChans = ((par.pchan==1) ? DevFmtMono : DevFmtStereo);
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if(par.bits == 8 && par.sig == 1)
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mDevice->FmtType = DevFmtByte;
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else if(par.bits == 8 && par.sig == 0)
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mDevice->FmtType = DevFmtUByte;
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else if(par.bits == 16 && par.sig == 1)
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mDevice->FmtType = DevFmtShort;
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else if(par.bits == 16 && par.sig == 0)
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mDevice->FmtType = DevFmtUShort;
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else if(par.bits == 32 && par.sig == 1)
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mDevice->FmtType = DevFmtInt;
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else if(par.bits == 32 && par.sig == 0)
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mDevice->FmtType = DevFmtUInt;
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else
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{
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ERR("Unhandled sample format: %s %u-bit\n", (par.sig?"signed":"unsigned"), par.bits);
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return ALC_FALSE;
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}
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SetDefaultChannelOrder(mDevice);
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mDevice->UpdateSize = par.round;
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mDevice->BufferSize = par.bufsz + par.round;
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mBuffer.resize(mDevice->UpdateSize * mDevice->frameSizeFromFmt());
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std::fill(mBuffer.begin(), mBuffer.end(), 0);
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return ALC_TRUE;
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}
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ALCboolean SndioPlayback::start()
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{
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if(!sio_start(mSndHandle))
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{
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ERR("Error starting playback\n");
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return ALC_FALSE;
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}
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try {
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mKillNow.store(false, std::memory_order_release);
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mThread = std::thread{std::mem_fn(&SndioPlayback::mixerProc), this};
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return ALC_TRUE;
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}
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catch(std::exception& e) {
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ERR("Could not create playback thread: %s\n", e.what());
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}
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catch(...) {
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}
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sio_stop(mSndHandle);
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return ALC_FALSE;
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}
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void SndioPlayback::stop()
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{
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if(mKillNow.exchange(true, std::memory_order_acq_rel) || !mThread.joinable())
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return;
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mThread.join();
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if(!sio_stop(mSndHandle))
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ERR("Error stopping device\n");
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}
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struct SndioCapture final : public BackendBase {
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SndioCapture(ALCdevice *device) noexcept : BackendBase{device} { }
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~SndioCapture() override;
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int recordProc();
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ALCenum open(const ALCchar *name) override;
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ALCboolean start() override;
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void stop() override;
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ALCenum captureSamples(void *buffer, ALCuint samples) override;
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ALCuint availableSamples() override;
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sio_hdl *mSndHandle{nullptr};
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RingBufferPtr mRing;
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std::atomic<bool> mKillNow{true};
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std::thread mThread;
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static constexpr inline const char *CurrentPrefix() noexcept { return "SndioCapture::"; }
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DEF_NEWDEL(SndioCapture)
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};
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SndioCapture::~SndioCapture()
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{
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if(mSndHandle)
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sio_close(mSndHandle);
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mSndHandle = nullptr;
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}
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int SndioCapture::recordProc()
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{
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SetRTPriority();
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althrd_setname(RECORD_THREAD_NAME);
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const ALsizei frameSize{mDevice->frameSizeFromFmt()};
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while(!mKillNow.load(std::memory_order_acquire) &&
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mDevice->Connected.load(std::memory_order_acquire))
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{
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auto data = mRing->getWriteVector();
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size_t todo{data.first.len + data.second.len};
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if(todo == 0)
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{
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static char junk[4096];
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sio_read(mSndHandle, junk,
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minz(sizeof(junk)/frameSize, mDevice->UpdateSize)*frameSize);
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continue;
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}
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size_t total{0u};
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data.first.len *= frameSize;
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data.second.len *= frameSize;
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todo = minz(todo, mDevice->UpdateSize) * frameSize;
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while(total < todo)
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{
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if(!data.first.len)
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data.first = data.second;
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size_t got{sio_read(mSndHandle, data.first.buf, minz(todo-total, data.first.len))};
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if(!got)
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{
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aluHandleDisconnect(mDevice, "Failed to read capture samples");
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break;
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}
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data.first.buf += got;
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data.first.len -= got;
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total += got;
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}
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mRing->writeAdvance(total / frameSize);
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}
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return 0;
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}
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ALCenum SndioCapture::open(const ALCchar *name)
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{
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if(!name)
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name = sndio_device;
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else if(strcmp(name, sndio_device) != 0)
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return ALC_INVALID_VALUE;
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mSndHandle = sio_open(nullptr, SIO_REC, 0);
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if(mSndHandle == nullptr)
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{
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ERR("Could not open device\n");
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return ALC_INVALID_VALUE;
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}
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sio_par par;
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sio_initpar(&par);
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switch(mDevice->FmtType)
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{
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case DevFmtByte:
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par.bps = 1;
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par.sig = 1;
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break;
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case DevFmtUByte:
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par.bps = 1;
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par.sig = 0;
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break;
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case DevFmtShort:
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par.bps = 2;
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par.sig = 1;
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break;
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case DevFmtUShort:
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par.bps = 2;
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par.sig = 0;
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break;
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case DevFmtInt:
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par.bps = 4;
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par.sig = 1;
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break;
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case DevFmtUInt:
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par.bps = 4;
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par.sig = 0;
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break;
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case DevFmtFloat:
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ERR("%s capture samples not supported\n", DevFmtTypeString(mDevice->FmtType));
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return ALC_INVALID_VALUE;
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}
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par.bits = par.bps * 8;
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par.le = SIO_LE_NATIVE;
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par.msb = SIO_LE_NATIVE ? 0 : 1;
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par.rchan = mDevice->channelsFromFmt();
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par.rate = mDevice->Frequency;
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par.appbufsz = maxu(mDevice->BufferSize, mDevice->Frequency/10);
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par.round = minu(par.appbufsz, mDevice->Frequency/40);
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mDevice->UpdateSize = par.round;
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mDevice->BufferSize = par.appbufsz;
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if(!sio_setpar(mSndHandle, &par) || !sio_getpar(mSndHandle, &par))
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{
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ERR("Failed to set device parameters\n");
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return ALC_INVALID_VALUE;
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}
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if(par.bits != par.bps*8)
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{
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ERR("Padded samples not supported (%u of %u bits)\n", par.bits, par.bps*8);
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return ALC_INVALID_VALUE;
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}
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if(!((mDevice->FmtType == DevFmtByte && par.bits == 8 && par.sig != 0) ||
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(mDevice->FmtType == DevFmtUByte && par.bits == 8 && par.sig == 0) ||
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(mDevice->FmtType == DevFmtShort && par.bits == 16 && par.sig != 0) ||
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(mDevice->FmtType == DevFmtUShort && par.bits == 16 && par.sig == 0) ||
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(mDevice->FmtType == DevFmtInt && par.bits == 32 && par.sig != 0) ||
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(mDevice->FmtType == DevFmtUInt && par.bits == 32 && par.sig == 0)) ||
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mDevice->channelsFromFmt() != (ALsizei)par.rchan ||
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mDevice->Frequency != par.rate)
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{
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ERR("Failed to set format %s %s %uhz, got %c%u %u-channel %uhz instead\n",
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DevFmtTypeString(mDevice->FmtType), DevFmtChannelsString(mDevice->FmtChans),
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mDevice->Frequency, par.sig?'s':'u', par.bits, par.rchan, par.rate);
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return ALC_INVALID_VALUE;
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}
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mRing = CreateRingBuffer(mDevice->BufferSize, par.bps*par.rchan, false);
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if(!mRing)
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{
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ERR("Failed to allocate %u-byte ringbuffer\n", mDevice->BufferSize*par.bps*par.rchan);
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return ALC_OUT_OF_MEMORY;
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}
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SetDefaultChannelOrder(mDevice);
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mDevice->DeviceName = name;
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return ALC_NO_ERROR;
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}
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ALCboolean SndioCapture::start()
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{
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if(!sio_start(mSndHandle))
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{
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ERR("Error starting playback\n");
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return ALC_FALSE;
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}
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try {
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mKillNow.store(false, std::memory_order_release);
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mThread = std::thread{std::mem_fn(&SndioCapture::recordProc), this};
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return ALC_TRUE;
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}
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catch(std::exception& e) {
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ERR("Could not create record thread: %s\n", e.what());
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}
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catch(...) {
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}
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sio_stop(mSndHandle);
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return ALC_FALSE;
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}
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void SndioCapture::stop()
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{
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if(mKillNow.exchange(true, std::memory_order_acq_rel) || !mThread.joinable())
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return;
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mThread.join();
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if(!sio_stop(mSndHandle))
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ERR("Error stopping device\n");
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}
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ALCenum SndioCapture::captureSamples(void *buffer, ALCuint samples)
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{
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mRing->read(buffer, samples);
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return ALC_NO_ERROR;
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}
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ALCuint SndioCapture::availableSamples()
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{ return mRing->readSpace(); }
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} // namespace
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BackendFactory &SndIOBackendFactory::getFactory()
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{
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static SndIOBackendFactory factory{};
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return factory;
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}
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bool SndIOBackendFactory::init()
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{ return true; }
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bool SndIOBackendFactory::querySupport(BackendType type)
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{ return (type == BackendType::Playback || type == BackendType::Capture); }
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void SndIOBackendFactory::probe(DevProbe type, std::string *outnames)
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{
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switch(type)
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{
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case DevProbe::Playback:
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case DevProbe::Capture:
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/* Includes null char. */
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outnames->append(sndio_device, sizeof(sndio_device));
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break;
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}
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}
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BackendPtr SndIOBackendFactory::createBackend(ALCdevice *device, BackendType type)
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{
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if(type == BackendType::Playback)
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return BackendPtr{new SndioPlayback{device}};
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if(type == BackendType::Capture)
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return BackendPtr{new SndioCapture{device}};
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return nullptr;
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}
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