/**
* OpenAL cross platform audio library
* Copyright (C) 2011 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
*/
#ifdef _WIN32
#ifdef __MINGW32__
#define _WIN32_IE 0x501
#else
#define _WIN32_IE 0x400
#endif
#endif
#include "config.h"
#include <stdlib.h>
#include <time.h>
#include <errno.h>
#include <stdarg.h>
#include <ctype.h>
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
#ifdef HAVE_PROC_PIDPATH
#include <libproc.h>
#endif
#ifdef __FreeBSD__
#include <sys/types.h>
#include <sys/sysctl.h>
#endif
#ifndef AL_NO_UID_DEFS
#if defined(HAVE_GUIDDEF_H) || defined(HAVE_INITGUID_H)
#define INITGUID
#include <windows.h>
#ifdef HAVE_GUIDDEF_H
#include <guiddef.h>
#else
#include <initguid.h>
#endif
DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80,0x00, 0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80,0x00, 0x00,0xaa,0x00,0x38,0x9b,0x71);
DEFINE_GUID(IID_IDirectSoundNotify, 0xb0210783, 0x89cd, 0x11d0, 0xaf,0x08, 0x00,0xa0,0xc9,0x25,0xcd,0x16);
DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xbcde0395, 0xe52f, 0x467c, 0x8e,0x3d, 0xc4,0x57,0x92,0x91,0x69,0x2e);
DEFINE_GUID(IID_IMMDeviceEnumerator, 0xa95664d2, 0x9614, 0x4f35, 0xa7,0x46, 0xde,0x8d,0xb6,0x36,0x17,0xe6);
DEFINE_GUID(IID_IAudioClient, 0x1cb9ad4c, 0xdbfa, 0x4c32, 0xb1,0x78, 0xc2,0xf5,0x68,0xa7,0x03,0xb2);
DEFINE_GUID(IID_IAudioRenderClient, 0xf294acfc, 0x3146, 0x4483, 0xa7,0xbf, 0xad,0xdc,0xa7,0xc2,0x60,0xe2);
DEFINE_GUID(IID_IAudioCaptureClient, 0xc8adbd64, 0xe71e, 0x48a0, 0xa4,0xde, 0x18,0x5c,0x39,0x5c,0xd3,0x17);
#ifdef HAVE_WASAPI
#include <wtypes.h>
#include <devpropdef.h>
#include <propkeydef.h>
DEFINE_DEVPROPKEY(DEVPKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80,0x20, 0x67,0xd1,0x46,0xa8,0x50,0xe0, 14);
DEFINE_PROPERTYKEY(PKEY_AudioEndpoint_FormFactor, 0x1da5d803, 0xd492, 0x4edd, 0x8c,0x23, 0xe0,0xc0,0xff,0xee,0x7f,0x0e, 0);
DEFINE_PROPERTYKEY(PKEY_AudioEndpoint_GUID, 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23,0xe0, 0xc0,0xff,0xee,0x7f,0x0e, 4 );
#endif
#endif
#endif /* AL_NO_UID_DEFS */
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#ifdef HAVE_INTRIN_H
#include <intrin.h>
#endif
#ifdef HAVE_CPUID_H
#include <cpuid.h>
#endif
#ifdef HAVE_SYS_SYSCONF_H
#include <sys/sysconf.h>
#endif
#ifdef HAVE_FLOAT_H
#include <float.h>
#endif
#ifdef HAVE_IEEEFP_H
#include <ieeefp.h>
#endif
#ifndef _WIN32
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#elif defined(_WIN32_IE)
#include <shlobj.h>
#endif
#include <mutex>
#include <vector>
#include <string>
#include <algorithm>
#include "alMain.h"
#include "alu.h"
#include "cpu_caps.h"
#include "fpu_modes.h"
#include "uintmap.h"
#include "vector.h"
#include "compat.h"
#include "threads.h"
#if defined(HAVE_GCC_GET_CPUID) && (defined(__i386__) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_X64))
typedef unsigned int reg_type;
static inline void get_cpuid(int f, reg_type *regs)
{ __get_cpuid(f, ®s[0], ®s[1], ®s[2], ®s[3]); }
#define CAN_GET_CPUID
#elif defined(HAVE_CPUID_INTRINSIC) && (defined(__i386__) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_X64))
typedef int reg_type;
static inline void get_cpuid(int f, reg_type *regs)
{ (__cpuid)(regs, f); }
#define CAN_GET_CPUID
#endif
int CPUCapFlags = 0;
void FillCPUCaps(int capfilter)
{
int caps = 0;
/* FIXME: We really should get this for all available CPUs in case different
* CPUs have different caps (is that possible on one machine?). */
#ifdef CAN_GET_CPUID
union {
reg_type regs[4];
char str[sizeof(reg_type[4])];
} cpuinf[3] = {{ { 0, 0, 0, 0 } }};
get_cpuid(0, cpuinf[0].regs);
if(cpuinf[0].regs[0] == 0)
ERR("Failed to get CPUID\n");
else
{
unsigned int maxfunc = cpuinf[0].regs[0];
unsigned int maxextfunc;
get_cpuid(0x80000000, cpuinf[0].regs);
maxextfunc = cpuinf[0].regs[0];
TRACE("Detected max CPUID function: 0x%x (ext. 0x%x)\n", maxfunc, maxextfunc);
TRACE("Vendor ID: \"%.4s%.4s%.4s\"\n", cpuinf[0].str+4, cpuinf[0].str+12, cpuinf[0].str+8);
if(maxextfunc >= 0x80000004)
{
get_cpuid(0x80000002, cpuinf[0].regs);
get_cpuid(0x80000003, cpuinf[1].regs);
get_cpuid(0x80000004, cpuinf[2].regs);
TRACE("Name: \"%.16s%.16s%.16s\"\n", cpuinf[0].str, cpuinf[1].str, cpuinf[2].str);
}
if(maxfunc >= 1)
{
get_cpuid(1, cpuinf[0].regs);
if((cpuinf[0].regs[3]&(1<<25)))
caps |= CPU_CAP_SSE;
if((caps&CPU_CAP_SSE) && (cpuinf[0].regs[3]&(1<<26)))
caps |= CPU_CAP_SSE2;
if((caps&CPU_CAP_SSE2) && (cpuinf[0].regs[2]&(1<<0)))
caps |= CPU_CAP_SSE3;
if((caps&CPU_CAP_SSE3) && (cpuinf[0].regs[2]&(1<<19)))
caps |= CPU_CAP_SSE4_1;
}
}
#else
/* Assume support for whatever's supported if we can't check for it */
#if defined(HAVE_SSE4_1)
#warning "Assuming SSE 4.1 run-time support!"
caps |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3 | CPU_CAP_SSE4_1;
#elif defined(HAVE_SSE3)
#warning "Assuming SSE 3 run-time support!"
caps |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3;
#elif defined(HAVE_SSE2)
#warning "Assuming SSE 2 run-time support!"
caps |= CPU_CAP_SSE | CPU_CAP_SSE2;
#elif defined(HAVE_SSE)
#warning "Assuming SSE run-time support!"
caps |= CPU_CAP_SSE;
#endif
#endif
#ifdef HAVE_NEON
FILE *file = fopen("/proc/cpuinfo", "rt");
if(!file)
ERR("Failed to open /proc/cpuinfo, cannot check for NEON support\n");
else
{
std::string features;
char buf[256];
while(fgets(buf, sizeof(buf), file) != nullptr)
{
if(strncmp(buf, "Features\t:", 10) != 0)
continue;
features = buf+10;
while(features.back() != '\n')
{
if(fgets(buf, sizeof(buf), file) == nullptr)
break;
features += buf;
}
break;
}
fclose(file);
file = nullptr;
if(!features.empty())
{
const char *str = features.c_str();
while(isspace(str[0])) ++str;
TRACE("Got features string:%s\n", str);
while((str=strstr(str, "neon")) != nullptr)
{
if(isspace(*(str-1)) && (str[4] == 0 || isspace(str[4])))
{
caps |= CPU_CAP_NEON;
break;
}
++str;
}
}
}
#endif
TRACE("Extensions:%s%s%s%s%s%s\n",
((capfilter&CPU_CAP_SSE) ? ((caps&CPU_CAP_SSE) ? " +SSE" : " -SSE") : ""),
((capfilter&CPU_CAP_SSE2) ? ((caps&CPU_CAP_SSE2) ? " +SSE2" : " -SSE2") : ""),
((capfilter&CPU_CAP_SSE3) ? ((caps&CPU_CAP_SSE3) ? " +SSE3" : " -SSE3") : ""),
((capfilter&CPU_CAP_SSE4_1) ? ((caps&CPU_CAP_SSE4_1) ? " +SSE4.1" : " -SSE4.1") : ""),
((capfilter&CPU_CAP_NEON) ? ((caps&CPU_CAP_NEON) ? " +NEON" : " -NEON") : ""),
((!capfilter) ? " -none-" : "")
);
CPUCapFlags = caps & capfilter;
}
void SetMixerFPUMode(FPUCtl *ctl)
{
#if defined(__GNUC__) && defined(HAVE_SSE)
if((CPUCapFlags&CPU_CAP_SSE))
{
__asm__ __volatile__("stmxcsr %0" : "=m" (*&ctl->sse_state));
unsigned int sseState = ctl->sse_state;
sseState |= 0x8000; /* set flush-to-zero */
if((CPUCapFlags&CPU_CAP_SSE2))
sseState |= 0x0040; /* set denormals-are-zero */
__asm__ __volatile__("ldmxcsr %0" : : "m" (*&sseState));
}
#elif defined(HAVE___CONTROL87_2)
__control87_2(0, 0, &ctl->state, &ctl->sse_state);
_control87(_DN_FLUSH, _MCW_DN);
#elif defined(HAVE__CONTROLFP)
ctl->state = _controlfp(0, 0);
_controlfp(_DN_FLUSH, _MCW_DN);
#endif
}
void RestoreFPUMode(const FPUCtl *ctl)
{
#if defined(__GNUC__) && defined(HAVE_SSE)
if((CPUCapFlags&CPU_CAP_SSE))
__asm__ __volatile__("ldmxcsr %0" : : "m" (*&ctl->sse_state));
#elif defined(HAVE___CONTROL87_2)
unsigned int mode;
__control87_2(ctl->state, _MCW_DN, &mode, nullptr);
__control87_2(ctl->sse_state, _MCW_DN, nullptr, &mode);
#elif defined(HAVE__CONTROLFP)
_controlfp(ctl->state, _MCW_DN);
#endif
}
#ifdef _WIN32
PathNamePair GetProcBinary()
{
PathNamePair ret;
std::vector<WCHAR> fullpath(256);
DWORD len;
while((len=GetModuleFileNameW(nullptr, fullpath.data(), fullpath.size())) == fullpath.size())
fullpath.resize(fullpath.size() << 1);
if(len == 0)
{
ERR("Failed to get process name: error %lu\n", GetLastError());
return ret;
}
fullpath.resize(len);
if(fullpath.back() != 0)
fullpath.push_back(0);
auto sep = std::find(fullpath.rbegin()+1, fullpath.rend(), '\\');
sep = std::find(fullpath.rbegin()+1, sep, '/');
if(sep != fullpath.rend())
{
*sep = 0;
ret.fname = wstr_to_utf8(&*sep + 1);
ret.path = wstr_to_utf8(fullpath.data());
}
else
ret.fname = wstr_to_utf8(fullpath.data());
TRACE("Got: %s, %s\n", ret.path.c_str(), ret.fname.c_str());
return ret;
}
void *LoadLib(const char *name)
{
std::wstring wname{utf8_to_wstr(name)};
return LoadLibraryW(wname.c_str());
}
void CloseLib(void *handle)
{ FreeLibrary(static_cast<HMODULE>(handle)); }
void *GetSymbol(void *handle, const char *name)
{
void *ret{reinterpret_cast<void*>(GetProcAddress(static_cast<HMODULE>(handle), name))};
if(!ret) ERR("Failed to load %s\n", name);
return ret;
}
void al_print(const char *type, const char *func, const char *fmt, ...)
{
char str[1024];
va_list ap;
va_start(ap, fmt);
vsnprintf(str, sizeof(str), fmt, ap);
va_end(ap);
str[sizeof(str)-1] = 0;
std::wstring wstr{utf8_to_wstr(str)};
fprintf(LogFile, "AL lib: %s %s: %ls", type, func, wstr.c_str());
fflush(LogFile);
}
static inline int is_slash(int c)
{ return (c == '\\' || c == '/'); }
static void DirectorySearch(const char *path, const char *ext, std::vector<std::string> *const results)
{
std::string pathstr{path};
pathstr += "\\*";
pathstr += ext;
TRACE("Searching %s\n", pathstr.c_str());
std::wstring wpath{utf8_to_wstr(pathstr.c_str())};
WIN32_FIND_DATAW fdata;
HANDLE hdl{FindFirstFileW(wpath.c_str(), &fdata)};
if(hdl != INVALID_HANDLE_VALUE)
{
size_t base = results->size();
do {
results->emplace_back();
std::string &str = results->back();
str = path;
str += '\\';
str += wstr_to_utf8(fdata.cFileName);
TRACE("Got result %s\n", str.c_str());
} while(FindNextFileW(hdl, &fdata));
FindClose(hdl);
std::sort(results->begin()+base, results->end());
}
}
std::vector<std::string> SearchDataFiles(const char *ext, const char *subdir)
{
static std::mutex search_lock;
std::lock_guard<std::mutex> _{search_lock};
/* If the path is absolute, use it directly. */
std::vector<std::string> results;
if(isalpha(subdir[0]) && subdir[1] == ':' && is_slash(subdir[2]))
{
std::string path{subdir};
std::replace(path.begin(), path.end(), '/', '\\');
DirectorySearch(path.c_str(), ext, &results);
return results;
}
if(subdir[0] == '\\' && subdir[1] == '\\' && subdir[2] == '?' && subdir[3] == '\\')
{
DirectorySearch(subdir, ext, &results);
return results;
}
std::string path;
/* Search the app-local directory. */
WCHAR *cwdbuf{_wgetenv(L"ALSOFT_LOCAL_PATH")};
if(cwdbuf && *cwdbuf != '\0')
{
path = wstr_to_utf8(cwdbuf);
if(is_slash(path.back()))
path.pop_back();
}
else if(!(cwdbuf=_wgetcwd(nullptr, 0)))
path = ".";
else
{
path = wstr_to_utf8(cwdbuf);
if(is_slash(path.back()))
path.pop_back();
free(cwdbuf);
}
std::replace(path.begin(), path.end(), '/', '\\');
DirectorySearch(path.c_str(), ext, &results);
/* Search the local and global data dirs. */
static constexpr int ids[2]{ CSIDL_APPDATA, CSIDL_COMMON_APPDATA };
for(int id : ids)
{
WCHAR buffer[MAX_PATH];
if(SHGetSpecialFolderPathW(nullptr, buffer, id, FALSE) == FALSE)
continue;
path = wstr_to_utf8(buffer);
if(!is_slash(path.back()))
path += '\\';
path += subdir;
std::replace(path.begin(), path.end(), '/', '\\');
DirectorySearch(path.c_str(), ext, &results);
}
return results;
}
void SetRTPriority(void)
{
bool failed = false;
if(RTPrioLevel > 0)
failed = !SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
if(failed) ERR("Failed to set priority level for thread\n");
}
#else
PathNamePair GetProcBinary()
{
PathNamePair ret;
std::vector<char> pathname;
#ifdef __FreeBSD__
size_t pathlen;
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
if(sysctl(mib, 4, nullptr, &pathlen, nullptr, 0) == -1)
WARN("Failed to sysctl kern.proc.pathname: %s\n", strerror(errno));
else
{
pathname.resize(pathlen + 1);
sysctl(mib, 4, pathname.data(), &pathlen, nullptr, 0);
pathname.resize(pathlen);
}
#endif
#ifdef HAVE_PROC_PIDPATH
if(pathname.empty())
{
char procpath[PROC_PIDPATHINFO_MAXSIZE]{};
const pid_t pid{getpid()};
if(proc_pidpath(pid, procpath, sizeof(procpath)) < 1)
ERR("proc_pidpath(%d, ...) failed: %s\n", pid, strerror(errno));
else
pathname.insert(pathname.end(), procpath, procpath+strlen(procpath));
}
#endif
if(pathname.empty())
{
pathname.resize(256);
const char *selfname{"/proc/self/exe"};
ssize_t len{readlink(selfname, pathname.data(), pathname.size())};
if(len == -1 && errno == ENOENT)
{
selfname = "/proc/self/file";
len = readlink(selfname, pathname.data(), pathname.size());
}
if(len == -1 && errno == ENOENT)
{
selfname = "/proc/curproc/exe";
len = readlink(selfname, pathname.data(), pathname.size());
}
if(len == -1 && errno == ENOENT)
{
selfname = "/proc/curproc/file";
len = readlink(selfname, pathname.data(), pathname.size());
}
while(len > 0 && (size_t)len == pathname.size())
{
pathname.resize(pathname.size() << 1);
len = readlink(selfname, pathname.data(), pathname.size());
}
if(len <= 0)
{
WARN("Failed to readlink %s: %s\n", selfname, strerror(errno));
return ret;
}
pathname.resize(len);
}
while(!pathname.empty() && pathname.back() == 0)
pathname.pop_back();
auto sep = std::find(pathname.crbegin(), pathname.crend(), '/');
if(sep != pathname.crend())
{
ret.path = std::string(pathname.cbegin(), sep.base()-1);
ret.fname = std::string(sep.base(), pathname.cend());
}
else
ret.fname = std::string(pathname.cbegin(), pathname.cend());
TRACE("Got: %s, %s\n", ret.path.c_str(), ret.fname.c_str());
return ret;
}
#ifdef HAVE_DLFCN_H
void *LoadLib(const char *name)
{
dlerror();
void *handle{dlopen(name, RTLD_NOW)};
const char *err{dlerror()};
if(err) handle = nullptr;
return handle;
}
void CloseLib(void *handle)
{ dlclose(handle); }
void *GetSymbol(void *handle, const char *name)
{
dlerror();
void *sym{dlsym(handle, name)};
const char *err{dlerror()};
if(err)
{
WARN("Failed to load %s: %s\n", name, err);
sym = nullptr;
}
return sym;
}
#endif /* HAVE_DLFCN_H */
void al_print(const char *type, const char *func, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(LogFile, "AL lib: %s %s: ", type, func);
vfprintf(LogFile, fmt, ap);
va_end(ap);
fflush(LogFile);
}
static void DirectorySearch(const char *path, const char *ext, std::vector<std::string> *const results)
{
TRACE("Searching %s for *%s\n", path, ext);
DIR *dir{opendir(path)};
if(dir != nullptr)
{
const size_t extlen = strlen(ext);
size_t base = results->size();
struct dirent *dirent;
while((dirent=readdir(dir)) != nullptr)
{
if(strcmp(dirent->d_name, ".") == 0 || strcmp(dirent->d_name, "..") == 0)
continue;
size_t len{strlen(dirent->d_name)};
if(len <= extlen) continue;
if(strcasecmp(dirent->d_name+len-extlen, ext) != 0)
continue;
results->emplace_back();
std::string &str = results->back();
str = path;
if(str.back() != '/')
str.push_back('/');
str += dirent->d_name;
TRACE("Got result %s\n", str.c_str());
}
closedir(dir);
std::sort(results->begin()+base, results->end());
}
}
std::vector<std::string> SearchDataFiles(const char *ext, const char *subdir)
{
static std::mutex search_lock;
std::lock_guard<std::mutex> _{search_lock};
std::vector<std::string> results;
if(subdir[0] == '/')
{
DirectorySearch(subdir, ext, &results);
return results;
}
/* Search the app-local directory. */
const char *str{getenv("ALSOFT_LOCAL_PATH")};
if(str && *str != '\0')
DirectorySearch(str, ext, &results);
else
{
std::vector<char> cwdbuf(256);
while(!getcwd(cwdbuf.data(), cwdbuf.size()))
{
if(errno != ERANGE)
{
cwdbuf.clear();
break;
}
cwdbuf.resize(cwdbuf.size() << 1);
}
if(cwdbuf.empty())
DirectorySearch(".", ext, &results);
else
{
DirectorySearch(cwdbuf.data(), ext, &results);
cwdbuf.clear();
}
}
// Search local data dir
if((str=getenv("XDG_DATA_HOME")) != nullptr && str[0] != '\0')
{
std::string path{str};
if(path.back() != '/')
path += '/';
path += subdir;
DirectorySearch(path.c_str(), ext, &results);
}
else if((str=getenv("HOME")) != nullptr && str[0] != '\0')
{
std::string path{str};
if(path.back() == '/')
path.pop_back();
path += "/.local/share/";
path += subdir;
DirectorySearch(path.c_str(), ext, &results);
}
// Search global data dirs
if((str=getenv("XDG_DATA_DIRS")) == nullptr || str[0] == '\0')
str = "/usr/local/share/:/usr/share/";
const char *next{str};
while((str=next) != nullptr && str[0] != '\0')
{
next = strchr(str, ':');
std::string path = (next ? std::string(str, next++) : std::string(str));
if(path.empty()) continue;
if(path.back() != '/')
path += '/';
path += subdir;
DirectorySearch(path.c_str(), ext, &results);
}
return results;
}
void SetRTPriority(void)
{
bool failed = false;
#if defined(HAVE_PTHREAD_SETSCHEDPARAM) && !defined(__OpenBSD__)
if(RTPrioLevel > 0)
{
struct sched_param param;
/* Use the minimum real-time priority possible for now (on Linux this
* should be 1 for SCHED_RR) */
param.sched_priority = sched_get_priority_min(SCHED_RR);
failed = !!pthread_setschedparam(pthread_self(), SCHED_RR, ¶m);
}
#else
/* Real-time priority not available */
failed = (RTPrioLevel>0);
#endif
if(failed)
ERR("Failed to set priority level for thread\n");
}
#endif
char *alstrdup(const char *str)
{
const size_t len{strlen(str)};
char *ret{static_cast<char*>(al_calloc(DEF_ALIGN, len+1))};
memcpy(ret, str, len);
return ret;
}