🛠️🐜 Antkeeper superbuild with dependencies included
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955 lines
26 KiB
955 lines
26 KiB
/**
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* OpenAL cross platform audio library
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* Copyright (C) 2011-2013 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/qsa.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <sched.h>
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#include <errno.h>
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#include <memory.h>
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#include <poll.h>
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#include <thread>
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#include <memory>
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#include <algorithm>
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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 <sys/asoundlib.h>
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#include <sys/neutrino.h>
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namespace {
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struct qsa_data {
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snd_pcm_t* pcmHandle{nullptr};
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int audio_fd{-1};
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snd_pcm_channel_setup_t csetup{};
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snd_pcm_channel_params_t cparams{};
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ALvoid* buffer{nullptr};
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ALsizei size{0};
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std::atomic<ALenum> mKillNow{AL_TRUE};
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std::thread mThread;
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};
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struct DevMap {
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ALCchar* name;
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int card;
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int dev;
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};
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al::vector<DevMap> DeviceNameMap;
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al::vector<DevMap> CaptureNameMap;
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constexpr ALCchar qsaDevice[] = "QSA Default";
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constexpr struct {
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int32_t format;
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} formatlist[] = {
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{SND_PCM_SFMT_FLOAT_LE},
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{SND_PCM_SFMT_S32_LE},
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{SND_PCM_SFMT_U32_LE},
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{SND_PCM_SFMT_S16_LE},
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{SND_PCM_SFMT_U16_LE},
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{SND_PCM_SFMT_S8},
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{SND_PCM_SFMT_U8},
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{0},
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};
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constexpr struct {
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int32_t rate;
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} ratelist[] = {
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{192000},
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{176400},
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{96000},
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{88200},
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{48000},
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{44100},
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{32000},
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{24000},
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{22050},
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{16000},
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{12000},
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{11025},
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{8000},
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{0},
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};
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constexpr struct {
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int32_t channels;
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} channellist[] = {
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{8},
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{7},
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{6},
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{4},
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{2},
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{1},
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{0},
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};
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void deviceList(int type, al::vector<DevMap> *devmap)
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{
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snd_ctl_t* handle;
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snd_pcm_info_t pcminfo;
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int max_cards, card, err, dev;
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DevMap entry;
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char name[1024];
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snd_ctl_hw_info info;
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max_cards = snd_cards();
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if(max_cards < 0)
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return;
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std::for_each(devmap->begin(), devmap->end(),
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[](const DevMap &entry) -> void
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{ free(entry.name); }
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);
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devmap->clear();
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entry.name = strdup(qsaDevice);
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entry.card = 0;
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entry.dev = 0;
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devmap->push_back(entry);
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for(card = 0;card < max_cards;card++)
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{
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if((err=snd_ctl_open(&handle, card)) < 0)
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continue;
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if((err=snd_ctl_hw_info(handle, &info)) < 0)
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{
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snd_ctl_close(handle);
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continue;
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}
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for(dev = 0;dev < (int)info.pcmdevs;dev++)
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{
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if((err=snd_ctl_pcm_info(handle, dev, &pcminfo)) < 0)
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continue;
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if((type==SND_PCM_CHANNEL_PLAYBACK && (pcminfo.flags&SND_PCM_INFO_PLAYBACK)) ||
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(type==SND_PCM_CHANNEL_CAPTURE && (pcminfo.flags&SND_PCM_INFO_CAPTURE)))
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{
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snprintf(name, sizeof(name), "%s [%s] (hw:%d,%d)", info.name, pcminfo.name, card, dev);
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entry.name = strdup(name);
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entry.card = card;
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entry.dev = dev;
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devmap->push_back(entry);
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TRACE("Got device \"%s\", card %d, dev %d\n", name, card, dev);
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}
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}
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snd_ctl_close(handle);
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}
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}
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/* Wrappers to use an old-style backend with the new interface. */
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struct PlaybackWrapper final : public BackendBase {
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PlaybackWrapper(ALCdevice *device) noexcept : BackendBase{device} { }
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~PlaybackWrapper() override;
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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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std::unique_ptr<qsa_data> mExtraData;
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static constexpr inline const char *CurrentPrefix() noexcept { return "PlaybackWrapper::"; }
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DEF_NEWDEL(PlaybackWrapper)
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};
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FORCE_ALIGN static int qsa_proc_playback(void *ptr)
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{
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PlaybackWrapper *self = static_cast<PlaybackWrapper*>(ptr);
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ALCdevice *device = self->mDevice;
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qsa_data *data = self->mExtraData.get();
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snd_pcm_channel_status_t status;
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sched_param param;
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char* write_ptr;
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ALint len;
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int sret;
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SetRTPriority();
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althrd_setname(MIXER_THREAD_NAME);
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/* Increase default 10 priority to 11 to avoid jerky sound */
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SchedGet(0, 0, ¶m);
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param.sched_priority=param.sched_curpriority+1;
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SchedSet(0, 0, SCHED_NOCHANGE, ¶m);
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const ALint frame_size = device->frameSizeFromFmt();
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self->lock();
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while(!data->mKillNow.load(std::memory_order_acquire))
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{
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pollfd pollitem{};
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pollitem.fd = data->audio_fd;
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pollitem.events = POLLOUT;
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/* Select also works like time slice to OS */
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self->unlock();
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sret = poll(&pollitem, 1, 2000);
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self->lock();
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if(sret == -1)
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{
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if(errno == EINTR || errno == EAGAIN)
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continue;
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ERR("poll error: %s\n", strerror(errno));
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aluHandleDisconnect(device, "Failed waiting for playback buffer: %s", strerror(errno));
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break;
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}
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if(sret == 0)
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{
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ERR("poll timeout\n");
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continue;
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}
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len = data->size;
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write_ptr = static_cast<char*>(data->buffer);
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aluMixData(device, write_ptr, len/frame_size);
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while(len>0 && !data->mKillNow.load(std::memory_order_acquire))
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{
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int wrote = snd_pcm_plugin_write(data->pcmHandle, write_ptr, len);
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if(wrote <= 0)
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{
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if(errno==EAGAIN || errno==EWOULDBLOCK)
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continue;
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memset(&status, 0, sizeof(status));
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status.channel = SND_PCM_CHANNEL_PLAYBACK;
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snd_pcm_plugin_status(data->pcmHandle, &status);
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/* we need to reinitialize the sound channel if we've underrun the buffer */
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if(status.status == SND_PCM_STATUS_UNDERRUN ||
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status.status == SND_PCM_STATUS_READY)
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{
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if(snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_PLAYBACK) < 0)
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{
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aluHandleDisconnect(device, "Playback recovery failed");
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break;
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}
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}
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}
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else
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{
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write_ptr += wrote;
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len -= wrote;
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}
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}
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}
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self->unlock();
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return 0;
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}
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/************/
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/* Playback */
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/************/
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static ALCenum qsa_open_playback(PlaybackWrapper *self, const ALCchar* deviceName)
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{
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ALCdevice *device = self->mDevice;
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int card, dev;
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int status;
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std::unique_ptr<qsa_data> data{new qsa_data{}};
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data->mKillNow.store(AL_TRUE, std::memory_order_relaxed);
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if(!deviceName)
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deviceName = qsaDevice;
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if(strcmp(deviceName, qsaDevice) == 0)
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status = snd_pcm_open_preferred(&data->pcmHandle, &card, &dev, SND_PCM_OPEN_PLAYBACK);
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else
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{
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if(DeviceNameMap.empty())
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deviceList(SND_PCM_CHANNEL_PLAYBACK, &DeviceNameMap);
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auto iter = std::find_if(DeviceNameMap.begin(), DeviceNameMap.end(),
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[deviceName](const DevMap &entry) -> bool
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{ return entry.name && strcmp(deviceName, entry.name) == 0; }
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);
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if(iter == DeviceNameMap.cend())
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return ALC_INVALID_DEVICE;
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status = snd_pcm_open(&data->pcmHandle, iter->card, iter->dev, SND_PCM_OPEN_PLAYBACK);
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}
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if(status < 0)
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return ALC_INVALID_DEVICE;
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data->audio_fd = snd_pcm_file_descriptor(data->pcmHandle, SND_PCM_CHANNEL_PLAYBACK);
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if(data->audio_fd < 0)
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{
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snd_pcm_close(data->pcmHandle);
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return ALC_INVALID_DEVICE;
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}
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device->DeviceName = deviceName;
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self->mExtraData = std::move(data);
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return ALC_NO_ERROR;
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}
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static void qsa_close_playback(PlaybackWrapper *self)
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{
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qsa_data *data = self->mExtraData.get();
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if (data->buffer!=NULL)
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{
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free(data->buffer);
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data->buffer=NULL;
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}
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snd_pcm_close(data->pcmHandle);
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self->mExtraData = nullptr;
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}
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static ALCboolean qsa_reset_playback(PlaybackWrapper *self)
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{
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ALCdevice *device = self->mDevice;
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qsa_data *data = self->mExtraData.get();
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int32_t format=-1;
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switch(device->FmtType)
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{
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case DevFmtByte:
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format=SND_PCM_SFMT_S8;
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break;
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case DevFmtUByte:
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format=SND_PCM_SFMT_U8;
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break;
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case DevFmtShort:
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format=SND_PCM_SFMT_S16_LE;
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break;
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case DevFmtUShort:
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format=SND_PCM_SFMT_U16_LE;
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break;
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case DevFmtInt:
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format=SND_PCM_SFMT_S32_LE;
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break;
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case DevFmtUInt:
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format=SND_PCM_SFMT_U32_LE;
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break;
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case DevFmtFloat:
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format=SND_PCM_SFMT_FLOAT_LE;
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break;
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}
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/* we actually don't want to block on writes */
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snd_pcm_nonblock_mode(data->pcmHandle, 1);
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/* Disable mmap to control data transfer to the audio device */
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snd_pcm_plugin_set_disable(data->pcmHandle, PLUGIN_DISABLE_MMAP);
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snd_pcm_plugin_set_disable(data->pcmHandle, PLUGIN_DISABLE_BUFFER_PARTIAL_BLOCKS);
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// configure a sound channel
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memset(&data->cparams, 0, sizeof(data->cparams));
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data->cparams.channel=SND_PCM_CHANNEL_PLAYBACK;
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data->cparams.mode=SND_PCM_MODE_BLOCK;
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data->cparams.start_mode=SND_PCM_START_FULL;
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data->cparams.stop_mode=SND_PCM_STOP_STOP;
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data->cparams.buf.block.frag_size=device->UpdateSize * device->frameSizeFromFmt();
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data->cparams.buf.block.frags_max=device->BufferSize / device->UpdateSize;
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data->cparams.buf.block.frags_min=data->cparams.buf.block.frags_max;
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data->cparams.format.interleave=1;
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data->cparams.format.rate=device->Frequency;
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data->cparams.format.voices=device->channelsFromFmt();
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data->cparams.format.format=format;
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if ((snd_pcm_plugin_params(data->pcmHandle, &data->cparams))<0)
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{
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int original_rate=data->cparams.format.rate;
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int original_voices=data->cparams.format.voices;
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int original_format=data->cparams.format.format;
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int it;
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int jt;
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for (it=0; it<1; it++)
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{
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/* Check for second pass */
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if (it==1)
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{
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original_rate=ratelist[0].rate;
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original_voices=channellist[0].channels;
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original_format=formatlist[0].format;
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}
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do {
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/* At first downgrade sample format */
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jt=0;
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do {
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if (formatlist[jt].format==data->cparams.format.format)
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{
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data->cparams.format.format=formatlist[jt+1].format;
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break;
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}
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if (formatlist[jt].format==0)
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{
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data->cparams.format.format=0;
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break;
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}
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jt++;
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} while(1);
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if (data->cparams.format.format==0)
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{
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data->cparams.format.format=original_format;
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/* At secod downgrade sample rate */
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jt=0;
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do {
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if (ratelist[jt].rate==data->cparams.format.rate)
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{
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data->cparams.format.rate=ratelist[jt+1].rate;
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break;
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}
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if (ratelist[jt].rate==0)
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{
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data->cparams.format.rate=0;
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break;
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}
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jt++;
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} while(1);
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if (data->cparams.format.rate==0)
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{
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data->cparams.format.rate=original_rate;
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data->cparams.format.format=original_format;
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/* At third downgrade channels number */
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jt=0;
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do {
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if(channellist[jt].channels==data->cparams.format.voices)
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{
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data->cparams.format.voices=channellist[jt+1].channels;
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break;
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}
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if (channellist[jt].channels==0)
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{
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data->cparams.format.voices=0;
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break;
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}
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jt++;
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} while(1);
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}
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if (data->cparams.format.voices==0)
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{
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break;
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}
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}
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data->cparams.buf.block.frag_size=device->UpdateSize*
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data->cparams.format.voices*
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snd_pcm_format_width(data->cparams.format.format)/8;
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data->cparams.buf.block.frags_max=device->NumUpdates;
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data->cparams.buf.block.frags_min=device->NumUpdates;
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if ((snd_pcm_plugin_params(data->pcmHandle, &data->cparams))<0)
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{
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continue;
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}
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else
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{
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break;
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}
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} while(1);
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if (data->cparams.format.voices!=0)
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{
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break;
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}
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}
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if (data->cparams.format.voices==0)
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{
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return ALC_FALSE;
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}
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}
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if ((snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_PLAYBACK))<0)
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{
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return ALC_FALSE;
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}
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memset(&data->csetup, 0, sizeof(data->csetup));
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data->csetup.channel=SND_PCM_CHANNEL_PLAYBACK;
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if (snd_pcm_plugin_setup(data->pcmHandle, &data->csetup)<0)
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{
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return ALC_FALSE;
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}
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/* now fill back to the our AL device */
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device->Frequency=data->cparams.format.rate;
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switch (data->cparams.format.voices)
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{
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case 1:
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device->FmtChans=DevFmtMono;
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break;
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case 2:
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device->FmtChans=DevFmtStereo;
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break;
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case 4:
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device->FmtChans=DevFmtQuad;
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break;
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case 6:
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device->FmtChans=DevFmtX51;
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break;
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case 7:
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device->FmtChans=DevFmtX61;
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break;
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case 8:
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device->FmtChans=DevFmtX71;
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break;
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default:
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device->FmtChans=DevFmtMono;
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break;
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}
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switch (data->cparams.format.format)
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{
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case SND_PCM_SFMT_S8:
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device->FmtType=DevFmtByte;
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break;
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case SND_PCM_SFMT_U8:
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device->FmtType=DevFmtUByte;
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break;
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case SND_PCM_SFMT_S16_LE:
|
|
device->FmtType=DevFmtShort;
|
|
break;
|
|
case SND_PCM_SFMT_U16_LE:
|
|
device->FmtType=DevFmtUShort;
|
|
break;
|
|
case SND_PCM_SFMT_S32_LE:
|
|
device->FmtType=DevFmtInt;
|
|
break;
|
|
case SND_PCM_SFMT_U32_LE:
|
|
device->FmtType=DevFmtUInt;
|
|
break;
|
|
case SND_PCM_SFMT_FLOAT_LE:
|
|
device->FmtType=DevFmtFloat;
|
|
break;
|
|
default:
|
|
device->FmtType=DevFmtShort;
|
|
break;
|
|
}
|
|
|
|
SetDefaultChannelOrder(device);
|
|
|
|
device->UpdateSize=data->csetup.buf.block.frag_size / device->frameSizeFromFmt();
|
|
device->NumUpdates=data->csetup.buf.block.frags;
|
|
|
|
data->size=data->csetup.buf.block.frag_size;
|
|
data->buffer=malloc(data->size);
|
|
if (!data->buffer)
|
|
{
|
|
return ALC_FALSE;
|
|
}
|
|
|
|
return ALC_TRUE;
|
|
}
|
|
|
|
static ALCboolean qsa_start_playback(PlaybackWrapper *self)
|
|
{
|
|
qsa_data *data = self->mExtraData.get();
|
|
|
|
try {
|
|
data->mKillNow.store(AL_FALSE, std::memory_order_release);
|
|
data->mThread = std::thread(qsa_proc_playback, self);
|
|
return ALC_TRUE;
|
|
}
|
|
catch(std::exception& e) {
|
|
ERR("Could not create playback thread: %s\n", e.what());
|
|
}
|
|
catch(...) {
|
|
}
|
|
return ALC_FALSE;
|
|
}
|
|
|
|
static void qsa_stop_playback(PlaybackWrapper *self)
|
|
{
|
|
qsa_data *data = self->mExtraData.get();
|
|
|
|
if(data->mKillNow.exchange(AL_TRUE, std::memory_order_acq_rel) || !data->mThread.joinable())
|
|
return;
|
|
data->mThread.join();
|
|
}
|
|
|
|
|
|
PlaybackWrapper::~PlaybackWrapper()
|
|
{
|
|
if(mExtraData)
|
|
qsa_close_playback(this);
|
|
}
|
|
|
|
ALCenum PlaybackWrapper::open(const ALCchar *name)
|
|
{ return qsa_open_playback(this, name); }
|
|
|
|
ALCboolean PlaybackWrapper::reset()
|
|
{ return qsa_reset_playback(this); }
|
|
|
|
ALCboolean PlaybackWrapper::start()
|
|
{ return qsa_start_playback(this); }
|
|
|
|
void PlaybackWrapper::stop()
|
|
{ qsa_stop_playback(this); }
|
|
|
|
|
|
/***********/
|
|
/* Capture */
|
|
/***********/
|
|
|
|
struct CaptureWrapper final : public BackendBase {
|
|
CaptureWrapper(ALCdevice *device) noexcept : BackendBase{device} { }
|
|
~CaptureWrapper() override;
|
|
|
|
ALCenum open(const ALCchar *name) override;
|
|
ALCboolean start() override;
|
|
void stop() override;
|
|
ALCenum captureSamples(void *buffer, ALCuint samples) override;
|
|
ALCuint availableSamples() override;
|
|
|
|
std::unique_ptr<qsa_data> mExtraData;
|
|
|
|
static constexpr inline const char *CurrentPrefix() noexcept { return "CaptureWrapper::"; }
|
|
DEF_NEWDEL(CaptureWrapper)
|
|
};
|
|
|
|
static ALCenum qsa_open_capture(CaptureWrapper *self, const ALCchar *deviceName)
|
|
{
|
|
ALCdevice *device = self->mDevice;
|
|
int card, dev;
|
|
int format=-1;
|
|
int status;
|
|
|
|
std::unique_ptr<qsa_data> data{new qsa_data{}};
|
|
|
|
if(!deviceName)
|
|
deviceName = qsaDevice;
|
|
|
|
if(strcmp(deviceName, qsaDevice) == 0)
|
|
status = snd_pcm_open_preferred(&data->pcmHandle, &card, &dev, SND_PCM_OPEN_CAPTURE);
|
|
else
|
|
{
|
|
if(CaptureNameMap.empty())
|
|
deviceList(SND_PCM_CHANNEL_CAPTURE, &CaptureNameMap);
|
|
|
|
auto iter = std::find_if(CaptureNameMap.cbegin(), CaptureNameMap.cend(),
|
|
[deviceName](const DevMap &entry) -> bool
|
|
{ return entry.name && strcmp(deviceName, entry.name) == 0; }
|
|
);
|
|
if(iter == CaptureNameMap.cend())
|
|
return ALC_INVALID_DEVICE;
|
|
|
|
status = snd_pcm_open(&data->pcmHandle, iter->card, iter->dev, SND_PCM_OPEN_CAPTURE);
|
|
}
|
|
|
|
if(status < 0)
|
|
return ALC_INVALID_DEVICE;
|
|
|
|
data->audio_fd = snd_pcm_file_descriptor(data->pcmHandle, SND_PCM_CHANNEL_CAPTURE);
|
|
if(data->audio_fd < 0)
|
|
{
|
|
snd_pcm_close(data->pcmHandle);
|
|
return ALC_INVALID_DEVICE;
|
|
}
|
|
|
|
device->DeviceName = deviceName;
|
|
|
|
switch (device->FmtType)
|
|
{
|
|
case DevFmtByte:
|
|
format=SND_PCM_SFMT_S8;
|
|
break;
|
|
case DevFmtUByte:
|
|
format=SND_PCM_SFMT_U8;
|
|
break;
|
|
case DevFmtShort:
|
|
format=SND_PCM_SFMT_S16_LE;
|
|
break;
|
|
case DevFmtUShort:
|
|
format=SND_PCM_SFMT_U16_LE;
|
|
break;
|
|
case DevFmtInt:
|
|
format=SND_PCM_SFMT_S32_LE;
|
|
break;
|
|
case DevFmtUInt:
|
|
format=SND_PCM_SFMT_U32_LE;
|
|
break;
|
|
case DevFmtFloat:
|
|
format=SND_PCM_SFMT_FLOAT_LE;
|
|
break;
|
|
}
|
|
|
|
/* we actually don't want to block on reads */
|
|
snd_pcm_nonblock_mode(data->pcmHandle, 1);
|
|
/* Disable mmap to control data transfer to the audio device */
|
|
snd_pcm_plugin_set_disable(data->pcmHandle, PLUGIN_DISABLE_MMAP);
|
|
|
|
/* configure a sound channel */
|
|
memset(&data->cparams, 0, sizeof(data->cparams));
|
|
data->cparams.mode=SND_PCM_MODE_BLOCK;
|
|
data->cparams.channel=SND_PCM_CHANNEL_CAPTURE;
|
|
data->cparams.start_mode=SND_PCM_START_GO;
|
|
data->cparams.stop_mode=SND_PCM_STOP_STOP;
|
|
|
|
data->cparams.buf.block.frag_size=device->UpdateSize * device->frameSizeFromFmt();
|
|
data->cparams.buf.block.frags_max=device->NumUpdates;
|
|
data->cparams.buf.block.frags_min=device->NumUpdates;
|
|
|
|
data->cparams.format.interleave=1;
|
|
data->cparams.format.rate=device->Frequency;
|
|
data->cparams.format.voices=device->channelsFromFmt();
|
|
data->cparams.format.format=format;
|
|
|
|
if(snd_pcm_plugin_params(data->pcmHandle, &data->cparams) < 0)
|
|
{
|
|
snd_pcm_close(data->pcmHandle);
|
|
return ALC_INVALID_VALUE;
|
|
}
|
|
|
|
self->mExtraData = std::move(data);
|
|
|
|
return ALC_NO_ERROR;
|
|
}
|
|
|
|
static void qsa_close_capture(CaptureWrapper *self)
|
|
{
|
|
qsa_data *data = self->mExtraData.get();
|
|
|
|
if (data->pcmHandle!=nullptr)
|
|
snd_pcm_close(data->pcmHandle);
|
|
data->pcmHandle = nullptr;
|
|
|
|
self->mExtraData = nullptr;
|
|
}
|
|
|
|
static void qsa_start_capture(CaptureWrapper *self)
|
|
{
|
|
qsa_data *data = self->mExtraData.get();
|
|
int rstatus;
|
|
|
|
if ((rstatus=snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_CAPTURE))<0)
|
|
{
|
|
ERR("capture prepare failed: %s\n", snd_strerror(rstatus));
|
|
return;
|
|
}
|
|
|
|
memset(&data->csetup, 0, sizeof(data->csetup));
|
|
data->csetup.channel=SND_PCM_CHANNEL_CAPTURE;
|
|
if ((rstatus=snd_pcm_plugin_setup(data->pcmHandle, &data->csetup))<0)
|
|
{
|
|
ERR("capture setup failed: %s\n", snd_strerror(rstatus));
|
|
return;
|
|
}
|
|
|
|
snd_pcm_capture_go(data->pcmHandle);
|
|
}
|
|
|
|
static void qsa_stop_capture(CaptureWrapper *self)
|
|
{
|
|
qsa_data *data = self->mExtraData.get();
|
|
snd_pcm_capture_flush(data->pcmHandle);
|
|
}
|
|
|
|
static ALCuint qsa_available_samples(CaptureWrapper *self)
|
|
{
|
|
ALCdevice *device = self->mDevice;
|
|
qsa_data *data = self->mExtraData.get();
|
|
snd_pcm_channel_status_t status;
|
|
ALint frame_size = device->frameSizeFromFmt();
|
|
ALint free_size;
|
|
int rstatus;
|
|
|
|
memset(&status, 0, sizeof (status));
|
|
status.channel=SND_PCM_CHANNEL_CAPTURE;
|
|
snd_pcm_plugin_status(data->pcmHandle, &status);
|
|
if ((status.status==SND_PCM_STATUS_OVERRUN) ||
|
|
(status.status==SND_PCM_STATUS_READY))
|
|
{
|
|
if ((rstatus=snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_CAPTURE))<0)
|
|
{
|
|
ERR("capture prepare failed: %s\n", snd_strerror(rstatus));
|
|
aluHandleDisconnect(device, "Failed capture recovery: %s", snd_strerror(rstatus));
|
|
return 0;
|
|
}
|
|
|
|
snd_pcm_capture_go(data->pcmHandle);
|
|
return 0;
|
|
}
|
|
|
|
free_size=data->csetup.buf.block.frag_size*data->csetup.buf.block.frags;
|
|
free_size-=status.free;
|
|
|
|
return free_size/frame_size;
|
|
}
|
|
|
|
static ALCenum qsa_capture_samples(CaptureWrapper *self, ALCvoid *buffer, ALCuint samples)
|
|
{
|
|
ALCdevice *device = self->mDevice;
|
|
qsa_data *data = self->mExtraData.get();
|
|
char* read_ptr;
|
|
snd_pcm_channel_status_t status;
|
|
int selectret;
|
|
int bytes_read;
|
|
ALint frame_size=device->frameSizeFromFmt();
|
|
ALint len=samples*frame_size;
|
|
int rstatus;
|
|
|
|
read_ptr = static_cast<char*>(buffer);
|
|
|
|
while (len>0)
|
|
{
|
|
pollfd pollitem{};
|
|
pollitem.fd = data->audio_fd;
|
|
pollitem.events = POLLOUT;
|
|
|
|
/* Select also works like time slice to OS */
|
|
bytes_read=0;
|
|
selectret = poll(&pollitem, 1, 2000);
|
|
switch (selectret)
|
|
{
|
|
case -1:
|
|
aluHandleDisconnect(device, "Failed to check capture samples");
|
|
return ALC_INVALID_DEVICE;
|
|
case 0:
|
|
break;
|
|
default:
|
|
bytes_read=snd_pcm_plugin_read(data->pcmHandle, read_ptr, len);
|
|
break;
|
|
}
|
|
|
|
if (bytes_read<=0)
|
|
{
|
|
if ((errno==EAGAIN) || (errno==EWOULDBLOCK))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
memset(&status, 0, sizeof (status));
|
|
status.channel=SND_PCM_CHANNEL_CAPTURE;
|
|
snd_pcm_plugin_status(data->pcmHandle, &status);
|
|
|
|
/* we need to reinitialize the sound channel if we've overrun the buffer */
|
|
if ((status.status==SND_PCM_STATUS_OVERRUN) ||
|
|
(status.status==SND_PCM_STATUS_READY))
|
|
{
|
|
if ((rstatus=snd_pcm_plugin_prepare(data->pcmHandle, SND_PCM_CHANNEL_CAPTURE))<0)
|
|
{
|
|
ERR("capture prepare failed: %s\n", snd_strerror(rstatus));
|
|
aluHandleDisconnect(device, "Failed capture recovery: %s",
|
|
snd_strerror(rstatus));
|
|
return ALC_INVALID_DEVICE;
|
|
}
|
|
snd_pcm_capture_go(data->pcmHandle);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
read_ptr+=bytes_read;
|
|
len-=bytes_read;
|
|
}
|
|
}
|
|
|
|
return ALC_NO_ERROR;
|
|
}
|
|
|
|
|
|
CaptureWrapper::~CaptureWrapper()
|
|
{
|
|
if(mExtraData)
|
|
qsa_close_capture(this);
|
|
}
|
|
|
|
ALCenum CaptureWrapper::open(const ALCchar *name)
|
|
{ return qsa_open_capture(this, name); }
|
|
|
|
ALCboolean CaptureWrapper::start()
|
|
{ qsa_start_capture(this); return ALC_TRUE; }
|
|
|
|
void CaptureWrapper::stop()
|
|
{ qsa_stop_capture(this); }
|
|
|
|
ALCenum CaptureWrapper::captureSamples(void *buffer, ALCuint samples)
|
|
{ return qsa_capture_samples(this, buffer, samples); }
|
|
|
|
ALCuint CaptureWrapper::availableSamples()
|
|
{ return qsa_available_samples(this); }
|
|
|
|
} // namespace
|
|
|
|
|
|
bool QSABackendFactory::init()
|
|
{ return true; }
|
|
|
|
bool QSABackendFactory::querySupport(BackendType type)
|
|
{ return (type == BackendType::Playback || type == BackendType::Capture); }
|
|
|
|
void QSABackendFactory::probe(DevProbe type, std::string *outnames)
|
|
{
|
|
auto add_device = [outnames](const DevMap &entry) -> void
|
|
{
|
|
const char *n = entry.name;
|
|
if(n && n[0])
|
|
outnames->append(n, strlen(n)+1);
|
|
};
|
|
|
|
switch (type)
|
|
{
|
|
case DevProbe::Playback:
|
|
deviceList(SND_PCM_CHANNEL_PLAYBACK, &DeviceNameMap);
|
|
std::for_each(DeviceNameMap.cbegin(), DeviceNameMap.cend(), add_device);
|
|
break;
|
|
case DevProbe::Capture:
|
|
deviceList(SND_PCM_CHANNEL_CAPTURE, &CaptureNameMap);
|
|
std::for_each(CaptureNameMap.cbegin(), CaptureNameMap.cend(), add_device);
|
|
break;
|
|
}
|
|
}
|
|
|
|
BackendPtr QSABackendFactory::createBackend(ALCdevice *device, BackendType type)
|
|
{
|
|
if(type == BackendType::Playback)
|
|
return BackendPtr{new PlaybackWrapper{device}};
|
|
if(type == BackendType::Capture)
|
|
return BackendPtr{new CaptureWrapper{device}};
|
|
return nullptr;
|
|
}
|
|
|
|
BackendFactory &QSABackendFactory::getFactory()
|
|
{
|
|
static QSABackendFactory factory{};
|
|
return factory;
|
|
}
|