mirror of https://github.com/axmolengine/axmol.git
303 lines
8.2 KiB
C++
303 lines
8.2 KiB
C++
/**
|
|
* OpenAL cross platform audio library
|
|
* Copyright (C) 1999-2007 by authors.
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
* Or go to http://www.gnu.org/copyleft/lgpl.html
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "solaris.h"
|
|
|
|
#include <sys/ioctl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <memory.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <poll.h>
|
|
#include <math.h>
|
|
#include <string.h>
|
|
#include <vector>
|
|
|
|
#include <thread>
|
|
#include <functional>
|
|
|
|
#include "alc/alconfig.h"
|
|
#include "althrd_setname.h"
|
|
#include "core/device.h"
|
|
#include "core/helpers.h"
|
|
#include "core/logging.h"
|
|
|
|
#include <sys/audioio.h>
|
|
|
|
|
|
namespace {
|
|
|
|
constexpr char solaris_device[] = "Solaris Default";
|
|
|
|
std::string solaris_driver{"/dev/audio"};
|
|
|
|
|
|
struct SolarisBackend final : public BackendBase {
|
|
SolarisBackend(DeviceBase *device) noexcept : BackendBase{device} { }
|
|
~SolarisBackend() override;
|
|
|
|
int mixerProc();
|
|
|
|
void open(std::string_view name) override;
|
|
bool reset() override;
|
|
void start() override;
|
|
void stop() override;
|
|
|
|
int mFd{-1};
|
|
|
|
uint mFrameStep{};
|
|
std::vector<std::byte> mBuffer;
|
|
|
|
std::atomic<bool> mKillNow{true};
|
|
std::thread mThread;
|
|
|
|
DEF_NEWDEL(SolarisBackend)
|
|
};
|
|
|
|
SolarisBackend::~SolarisBackend()
|
|
{
|
|
if(mFd != -1)
|
|
close(mFd);
|
|
mFd = -1;
|
|
}
|
|
|
|
int SolarisBackend::mixerProc()
|
|
{
|
|
SetRTPriority();
|
|
althrd_setname(MIXER_THREAD_NAME);
|
|
|
|
const size_t frame_step{mDevice->channelsFromFmt()};
|
|
const uint frame_size{mDevice->frameSizeFromFmt()};
|
|
|
|
while(!mKillNow.load(std::memory_order_acquire)
|
|
&& mDevice->Connected.load(std::memory_order_acquire))
|
|
{
|
|
pollfd pollitem{};
|
|
pollitem.fd = mFd;
|
|
pollitem.events = POLLOUT;
|
|
|
|
int pret{poll(&pollitem, 1, 1000)};
|
|
if(pret < 0)
|
|
{
|
|
if(errno == EINTR || errno == EAGAIN)
|
|
continue;
|
|
ERR("poll failed: %s\n", strerror(errno));
|
|
mDevice->handleDisconnect("Failed to wait for playback buffer: %s", strerror(errno));
|
|
break;
|
|
}
|
|
else if(pret == 0)
|
|
{
|
|
WARN("poll timeout\n");
|
|
continue;
|
|
}
|
|
|
|
std::byte *write_ptr{mBuffer.data()};
|
|
size_t to_write{mBuffer.size()};
|
|
mDevice->renderSamples(write_ptr, static_cast<uint>(to_write/frame_size), frame_step);
|
|
while(to_write > 0 && !mKillNow.load(std::memory_order_acquire))
|
|
{
|
|
ssize_t wrote{write(mFd, write_ptr, to_write)};
|
|
if(wrote < 0)
|
|
{
|
|
if(errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR)
|
|
continue;
|
|
ERR("write failed: %s\n", strerror(errno));
|
|
mDevice->handleDisconnect("Failed to write playback samples: %s", strerror(errno));
|
|
break;
|
|
}
|
|
|
|
to_write -= static_cast<size_t>(wrote);
|
|
write_ptr += wrote;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void SolarisBackend::open(std::string_view name)
|
|
{
|
|
if(name.empty())
|
|
name = solaris_device;
|
|
else if(name != solaris_device)
|
|
throw al::backend_exception{al::backend_error::NoDevice, "Device name \"%.*s\" not found",
|
|
static_cast<int>(name.length()), name.data()};
|
|
|
|
int fd{::open(solaris_driver.c_str(), O_WRONLY)};
|
|
if(fd == -1)
|
|
throw al::backend_exception{al::backend_error::NoDevice, "Could not open %s: %s",
|
|
solaris_driver.c_str(), strerror(errno)};
|
|
|
|
if(mFd != -1)
|
|
::close(mFd);
|
|
mFd = fd;
|
|
|
|
mDevice->DeviceName = name;
|
|
}
|
|
|
|
bool SolarisBackend::reset()
|
|
{
|
|
audio_info_t info;
|
|
AUDIO_INITINFO(&info);
|
|
|
|
info.play.sample_rate = mDevice->Frequency;
|
|
info.play.channels = mDevice->channelsFromFmt();
|
|
switch(mDevice->FmtType)
|
|
{
|
|
case DevFmtByte:
|
|
info.play.precision = 8;
|
|
info.play.encoding = AUDIO_ENCODING_LINEAR;
|
|
break;
|
|
case DevFmtUByte:
|
|
info.play.precision = 8;
|
|
info.play.encoding = AUDIO_ENCODING_LINEAR8;
|
|
break;
|
|
case DevFmtUShort:
|
|
case DevFmtInt:
|
|
case DevFmtUInt:
|
|
case DevFmtFloat:
|
|
mDevice->FmtType = DevFmtShort;
|
|
/* fall-through */
|
|
case DevFmtShort:
|
|
info.play.precision = 16;
|
|
info.play.encoding = AUDIO_ENCODING_LINEAR;
|
|
break;
|
|
}
|
|
info.play.buffer_size = mDevice->BufferSize * mDevice->frameSizeFromFmt();
|
|
|
|
if(ioctl(mFd, AUDIO_SETINFO, &info) < 0)
|
|
{
|
|
ERR("ioctl failed: %s\n", strerror(errno));
|
|
return false;
|
|
}
|
|
|
|
if(mDevice->channelsFromFmt() != info.play.channels)
|
|
{
|
|
if(info.play.channels >= 2)
|
|
mDevice->FmtChans = DevFmtStereo;
|
|
else if(info.play.channels == 1)
|
|
mDevice->FmtChans = DevFmtMono;
|
|
else
|
|
throw al::backend_exception{al::backend_error::DeviceError,
|
|
"Got %u device channels", info.play.channels};
|
|
}
|
|
|
|
if(info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR8)
|
|
mDevice->FmtType = DevFmtUByte;
|
|
else if(info.play.precision == 8 && info.play.encoding == AUDIO_ENCODING_LINEAR)
|
|
mDevice->FmtType = DevFmtByte;
|
|
else if(info.play.precision == 16 && info.play.encoding == AUDIO_ENCODING_LINEAR)
|
|
mDevice->FmtType = DevFmtShort;
|
|
else if(info.play.precision == 32 && info.play.encoding == AUDIO_ENCODING_LINEAR)
|
|
mDevice->FmtType = DevFmtInt;
|
|
else
|
|
{
|
|
ERR("Got unhandled sample type: %d (0x%x)\n", info.play.precision, info.play.encoding);
|
|
return false;
|
|
}
|
|
|
|
uint frame_size{mDevice->bytesFromFmt() * info.play.channels};
|
|
mFrameStep = info.play.channels;
|
|
mDevice->Frequency = info.play.sample_rate;
|
|
mDevice->BufferSize = info.play.buffer_size / frame_size;
|
|
/* How to get the actual period size/count? */
|
|
mDevice->UpdateSize = mDevice->BufferSize / 2;
|
|
|
|
setDefaultChannelOrder();
|
|
|
|
mBuffer.resize(mDevice->UpdateSize * size_t{frame_size});
|
|
std::fill(mBuffer.begin(), mBuffer.end(), std::byte{});
|
|
|
|
return true;
|
|
}
|
|
|
|
void SolarisBackend::start()
|
|
{
|
|
try {
|
|
mKillNow.store(false, std::memory_order_release);
|
|
mThread = std::thread{std::mem_fn(&SolarisBackend::mixerProc), this};
|
|
}
|
|
catch(std::exception& e) {
|
|
throw al::backend_exception{al::backend_error::DeviceError,
|
|
"Failed to start mixing thread: %s", e.what()};
|
|
}
|
|
}
|
|
|
|
void SolarisBackend::stop()
|
|
{
|
|
if(mKillNow.exchange(true, std::memory_order_acq_rel) || !mThread.joinable())
|
|
return;
|
|
mThread.join();
|
|
|
|
if(ioctl(mFd, AUDIO_DRAIN) < 0)
|
|
ERR("Error draining device: %s\n", strerror(errno));
|
|
}
|
|
|
|
} // namespace
|
|
|
|
BackendFactory &SolarisBackendFactory::getFactory()
|
|
{
|
|
static SolarisBackendFactory factory{};
|
|
return factory;
|
|
}
|
|
|
|
bool SolarisBackendFactory::init()
|
|
{
|
|
if(auto devopt = ConfigValueStr(nullptr, "solaris", "device"))
|
|
solaris_driver = std::move(*devopt);
|
|
return true;
|
|
}
|
|
|
|
bool SolarisBackendFactory::querySupport(BackendType type)
|
|
{ return type == BackendType::Playback; }
|
|
|
|
std::string SolarisBackendFactory::probe(BackendType type)
|
|
{
|
|
std::string outnames;
|
|
switch(type)
|
|
{
|
|
case BackendType::Playback:
|
|
{
|
|
struct stat buf;
|
|
if(stat(solaris_driver.c_str(), &buf) == 0)
|
|
outnames.append(solaris_device, sizeof(solaris_device));
|
|
}
|
|
break;
|
|
|
|
case BackendType::Capture:
|
|
break;
|
|
}
|
|
return outnames;
|
|
}
|
|
|
|
BackendPtr SolarisBackendFactory::createBackend(DeviceBase *device, BackendType type)
|
|
{
|
|
if(type == BackendType::Playback)
|
|
return BackendPtr{new SolarisBackend{device}};
|
|
return nullptr;
|
|
}
|