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AuroraOpenALSoft/Alc/helpers.c
Chris Robinson 26144ca9df Rename al_string_* functions to alstr_*
2017-04-04 06:58:53 -07:00

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/**
* 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
#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_MMDEVAPI
#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 "alMain.h"
#include "alu.h"
#include "atomic.h"
#include "uintmap.h"
#include "vector.h"
#include "alstring.h"
#include "compat.h"
#include "threads.h"
extern inline ALuint NextPowerOf2(ALuint value);
extern inline size_t RoundUp(size_t value, size_t r);
extern inline ALint fastf2i(ALfloat f);
extern inline ALuint fastf2u(ALfloat f);
ALuint CPUCapFlags = 0;
void FillCPUCaps(ALuint capfilter)
{
ALuint 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?). */
#if defined(HAVE_GCC_GET_CPUID) && (defined(__i386__) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_X64))
union {
unsigned int regs[4];
char str[sizeof(unsigned int[4])];
} cpuinf[3];
if(!__get_cpuid(0, &cpuinf[0].regs[0], &cpuinf[0].regs[1], &cpuinf[0].regs[2], &cpuinf[0].regs[3]))
ERR("Failed to get CPUID\n");
else
{
unsigned int maxfunc = cpuinf[0].regs[0];
unsigned int maxextfunc = 0;
if(__get_cpuid(0x80000000, &cpuinf[0].regs[0], &cpuinf[0].regs[1], &cpuinf[0].regs[2], &cpuinf[0].regs[3]))
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[0], &cpuinf[0].regs[1], &cpuinf[0].regs[2], &cpuinf[0].regs[3]) &&
__get_cpuid(0x80000003, &cpuinf[1].regs[0], &cpuinf[1].regs[1], &cpuinf[1].regs[2], &cpuinf[1].regs[3]) &&
__get_cpuid(0x80000004, &cpuinf[2].regs[0], &cpuinf[2].regs[1], &cpuinf[2].regs[2], &cpuinf[2].regs[3]))
TRACE("Name: \"%.16s%.16s%.16s\"\n", cpuinf[0].str, cpuinf[1].str, cpuinf[2].str);
if(maxfunc >= 1 &&
__get_cpuid(1, &cpuinf[0].regs[0], &cpuinf[0].regs[1], &cpuinf[0].regs[2], &cpuinf[0].regs[3]))
{
if((cpuinf[0].regs[3]&(1<<25)))
{
caps |= CPU_CAP_SSE;
if((cpuinf[0].regs[3]&(1<<26)))
{
caps |= CPU_CAP_SSE2;
if((cpuinf[0].regs[2]&(1<<0)))
{
caps |= CPU_CAP_SSE3;
if((cpuinf[0].regs[2]&(1<<19)))
caps |= CPU_CAP_SSE4_1;
}
}
}
}
}
#elif defined(HAVE_CPUID_INTRINSIC) && (defined(__i386__) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_X64))
union {
int regs[4];
char str[sizeof(int[4])];
} cpuinf[3];
(__cpuid)(cpuinf[0].regs, 0);
if(cpuinf[0].regs[0] == 0)
ERR("Failed to get CPUID\n");
else
{
unsigned int maxfunc = cpuinf[0].regs[0];
unsigned int maxextfunc;
(__cpuid)(cpuinf[0].regs, 0x80000000);
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)
{
(__cpuid)(cpuinf[0].regs, 0x80000002);
(__cpuid)(cpuinf[1].regs, 0x80000003);
(__cpuid)(cpuinf[2].regs, 0x80000004);
TRACE("Name: \"%.16s%.16s%.16s\"\n", cpuinf[0].str, cpuinf[1].str, cpuinf[2].str);
}
if(maxfunc >= 1)
{
(__cpuid)(cpuinf[0].regs, 1);
if((cpuinf[0].regs[3]&(1<<25)))
{
caps |= CPU_CAP_SSE;
if((cpuinf[0].regs[3]&(1<<26)))
{
caps |= CPU_CAP_SSE2;
if((cpuinf[0].regs[2]&(1<<0)))
{
caps |= CPU_CAP_SSE3;
if((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
{
char buf[256];
while(fgets(buf, sizeof(buf), file) != NULL)
{
size_t len;
char *str;
if(strncmp(buf, "Features\t:", 10) != 0)
continue;
len = strlen(buf);
while(len > 0 && isspace(buf[len-1]))
buf[--len] = 0;
TRACE("Got features string:%s\n", buf+10);
str = buf;
while((str=strstr(str, "neon")) != NULL)
{
if(isspace(*(str-1)) && (str[4] == 0 || isspace(str[4])))
{
caps |= CPU_CAP_NEON;
break;
}
str++;
}
break;
}
fclose(file);
file = NULL;
}
#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)
{
#ifdef HAVE_FENV_H
fegetenv(STATIC_CAST(fenv_t, ctl));
#if defined(__GNUC__) && defined(HAVE_SSE)
/* FIXME: Some fegetenv implementations can get the SSE environment too?
* How to tell when it does? */
if((CPUCapFlags&CPU_CAP_SSE))
__asm__ __volatile__("stmxcsr %0" : "=m" (*&ctl->sse_state));
#endif
#ifdef FE_TOWARDZERO
fesetround(FE_TOWARDZERO);
#endif
#if defined(__GNUC__) && defined(HAVE_SSE)
if((CPUCapFlags&CPU_CAP_SSE))
{
int sseState = ctl->sse_state;
sseState |= 0x6000; /* set round-to-zero */
sseState |= 0x8000; /* set flush-to-zero */
if((CPUCapFlags&CPU_CAP_SSE2))
sseState |= 0x0040; /* set denormals-are-zero */
__asm__ __volatile__("ldmxcsr %0" : : "m" (*&sseState));
}
#endif
#elif defined(HAVE___CONTROL87_2)
int mode;
__control87_2(0, 0, &ctl->state, NULL);
__control87_2(_RC_CHOP, _MCW_RC, &mode, NULL);
#ifdef HAVE_SSE
if((CPUCapFlags&CPU_CAP_SSE))
{
__control87_2(0, 0, NULL, &ctl->sse_state);
__control87_2(_RC_CHOP|_DN_FLUSH, _MCW_RC|_MCW_DN, NULL, &mode);
}
#endif
#elif defined(HAVE__CONTROLFP)
ctl->state = _controlfp(0, 0);
(void)_controlfp(_RC_CHOP, _MCW_RC);
#endif
}
void RestoreFPUMode(const FPUCtl *ctl)
{
#ifdef HAVE_FENV_H
fesetenv(STATIC_CAST(fenv_t, ctl));
#if defined(__GNUC__) && defined(HAVE_SSE)
if((CPUCapFlags&CPU_CAP_SSE))
__asm__ __volatile__("ldmxcsr %0" : : "m" (*&ctl->sse_state));
#endif
#elif defined(HAVE___CONTROL87_2)
int mode;
__control87_2(ctl->state, _MCW_RC, &mode, NULL);
#ifdef HAVE_SSE
if((CPUCapFlags&CPU_CAP_SSE))
__control87_2(ctl->sse_state, _MCW_RC|_MCW_DN, NULL, &mode);
#endif
#elif defined(HAVE__CONTROLFP)
_controlfp(ctl->state, _MCW_RC);
#endif
}
static int StringSortCompare(const void *str1, const void *str2)
{
return alstr_cmp(*(const_al_string*)str1, *(const_al_string*)str2);
}
#ifdef _WIN32
static WCHAR *strrchrW(WCHAR *str, WCHAR ch)
{
WCHAR *ret = NULL;
while(*str)
{
if(*str == ch)
ret = str;
++str;
}
return ret;
}
al_string GetProcPath(void)
{
al_string ret = AL_STRING_INIT_STATIC();
WCHAR *pathname, *sep;
DWORD pathlen;
DWORD len;
pathlen = 256;
pathname = malloc(pathlen * sizeof(pathname[0]));
while(pathlen > 0 && (len=GetModuleFileNameW(NULL, pathname, pathlen)) == pathlen)
{
free(pathname);
pathlen <<= 1;
pathname = malloc(pathlen * sizeof(pathname[0]));
}
if(len == 0)
{
free(pathname);
ERR("Failed to get process name: error %lu\n", GetLastError());
return ret;
}
pathname[len] = 0;
if((sep = strrchrW(pathname, '\\')))
{
WCHAR *sep2 = strrchrW(pathname, '/');
if(sep2) *sep2 = 0;
else *sep = 0;
}
else if((sep = strrchrW(pathname, '/')))
*sep = 0;
alstr_copy_wcstr(&ret, pathname);
free(pathname);
TRACE("Got: %s\n", alstr_get_cstr(ret));
return ret;
}
static WCHAR *FromUTF8(const char *str)
{
WCHAR *out = NULL;
int len;
if((len=MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0)) > 0)
{
out = calloc(sizeof(WCHAR), len);
MultiByteToWideChar(CP_UTF8, 0, str, -1, out, len);
}
return out;
}
void *LoadLib(const char *name)
{
HANDLE hdl = NULL;
WCHAR *wname;
wname = FromUTF8(name);
if(!wname)
ERR("Failed to convert UTF-8 filename: \"%s\"\n", name);
else
{
hdl = LoadLibraryW(wname);
free(wname);
}
return hdl;
}
void CloseLib(void *handle)
{ FreeLibrary((HANDLE)handle); }
void *GetSymbol(void *handle, const char *name)
{
void *ret;
ret = (void*)GetProcAddress((HANDLE)handle, name);
if(ret == NULL)
ERR("Failed to load %s\n", name);
return ret;
}
WCHAR *strdupW(const WCHAR *str)
{
const WCHAR *n;
WCHAR *ret;
size_t len;
n = str;
while(*n) n++;
len = n - str;
ret = calloc(sizeof(WCHAR), len+1);
if(ret != NULL)
memcpy(ret, str, sizeof(WCHAR)*len);
return ret;
}
FILE *al_fopen(const char *fname, const char *mode)
{
WCHAR *wname=NULL, *wmode=NULL;
FILE *file = NULL;
wname = FromUTF8(fname);
wmode = FromUTF8(mode);
if(!wname)
ERR("Failed to convert UTF-8 filename: \"%s\"\n", fname);
else if(!wmode)
ERR("Failed to convert UTF-8 mode: \"%s\"\n", mode);
else
file = _wfopen(wname, wmode);
free(wname);
free(wmode);
return file;
}
void al_print(const char *type, const char *func, const char *fmt, ...)
{
char str[1024];
WCHAR *wstr;
va_list ap;
va_start(ap, fmt);
vsnprintf(str, sizeof(str), fmt, ap);
va_end(ap);
str[sizeof(str)-1] = 0;
wstr = FromUTF8(str);
if(!wstr)
fprintf(LogFile, "AL lib: %s %s: <UTF-8 error> %s", type, func, str);
else
{
fprintf(LogFile, "AL lib: %s %s: %ls", type, func, wstr);
free(wstr);
wstr = NULL;
}
fflush(LogFile);
}
static inline int is_slash(int c)
{ return (c == '\\' || c == '/'); }
static void DirectorySearch(const char *path, const char *ext, vector_al_string *results)
{
al_string pathstr = AL_STRING_INIT_STATIC();
WIN32_FIND_DATAW fdata;
WCHAR *wpath;
HANDLE hdl;
alstr_copy_cstr(&pathstr, path);
alstr_append_cstr(&pathstr, "\\*");
alstr_append_cstr(&pathstr, ext);
TRACE("Searching %s\n", alstr_get_cstr(pathstr));
wpath = FromUTF8(alstr_get_cstr(pathstr));
hdl = FindFirstFileW(wpath, &fdata);
if(hdl != INVALID_HANDLE_VALUE)
{
size_t base = VECTOR_SIZE(*results);
do {
al_string str = AL_STRING_INIT_STATIC();
alstr_copy_cstr(&str, path);
alstr_append_char(&str, '\\');
alstr_append_wcstr(&str, fdata.cFileName);
TRACE("Got result %s\n", alstr_get_cstr(str));
VECTOR_PUSH_BACK(*results, str);
} while(FindNextFileW(hdl, &fdata));
FindClose(hdl);
if(VECTOR_SIZE(*results) > base)
qsort(VECTOR_BEGIN(*results)+base, VECTOR_SIZE(*results)-base,
sizeof(VECTOR_FRONT(*results)), StringSortCompare);
}
free(wpath);
alstr_reset(&pathstr);
}
vector_al_string SearchDataFiles(const char *ext, const char *subdir)
{
static const int ids[2] = { CSIDL_APPDATA, CSIDL_COMMON_APPDATA };
static RefCount search_lock;
vector_al_string results = VECTOR_INIT_STATIC();
size_t i;
while(ATOMIC_EXCHANGE_SEQ(uint, &search_lock, 1) == 1)
althrd_yield();
/* If the path is absolute, use it directly. */
if(isalpha(subdir[0]) && subdir[1] == ':' && is_slash(subdir[2]))
{
al_string path = AL_STRING_INIT_STATIC();
alstr_copy_cstr(&path, subdir);
#define FIX_SLASH(i) do { if(*(i) == '/') *(i) = '\\'; } while(0)
VECTOR_FOR_EACH(char, path, FIX_SLASH);
#undef FIX_SLASH
DirectorySearch(alstr_get_cstr(path), ext, &results);
alstr_reset(&path);
}
else if(subdir[0] == '\\' && subdir[1] == '\\' && subdir[2] == '?' && subdir[3] == '\\')
DirectorySearch(subdir, ext, &results);
else
{
al_string path = AL_STRING_INIT_STATIC();
WCHAR *cwdbuf;
/* Search the app-local directory. */
if((cwdbuf=_wgetenv(L"ALSOFT_LOCAL_PATH")) && *cwdbuf != '\0')
{
alstr_copy_wcstr(&path, cwdbuf);
if(is_slash(VECTOR_BACK(path)))
{
VECTOR_POP_BACK(path);
*VECTOR_END(path) = 0;
}
}
else if(!(cwdbuf=_wgetcwd(NULL, 0)))
alstr_copy_cstr(&path, ".");
else
{
alstr_copy_wcstr(&path, cwdbuf);
if(is_slash(VECTOR_BACK(path)))
{
VECTOR_POP_BACK(path);
*VECTOR_END(path) = 0;
}
free(cwdbuf);
}
#define FIX_SLASH(i) do { if(*(i) == '/') *(i) = '\\'; } while(0)
VECTOR_FOR_EACH(char, path, FIX_SLASH);
#undef FIX_SLASH
DirectorySearch(alstr_get_cstr(path), ext, &results);
/* Search the local and global data dirs. */
for(i = 0;i < COUNTOF(ids);i++)
{
WCHAR buffer[PATH_MAX];
if(SHGetSpecialFolderPathW(NULL, buffer, ids[i], FALSE) != FALSE)
{
alstr_copy_wcstr(&path, buffer);
if(!is_slash(VECTOR_BACK(path)))
alstr_append_char(&path, '\\');
alstr_append_cstr(&path, subdir);
#define FIX_SLASH(i) do { if(*(i) == '/') *(i) = '\\'; } while(0)
VECTOR_FOR_EACH(char, path, FIX_SLASH);
#undef FIX_SLASH
DirectorySearch(alstr_get_cstr(path), ext, &results);
}
}
alstr_reset(&path);
}
ATOMIC_STORE_SEQ(&search_lock, 0);
return results;
}
struct FileMapping MapFileToMem(const char *fname)
{
struct FileMapping ret = { NULL, NULL, NULL, 0 };
MEMORY_BASIC_INFORMATION meminfo;
HANDLE file, fmap;
WCHAR *wname;
void *ptr;
wname = FromUTF8(fname);
file = CreateFileW(wname, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if(file == INVALID_HANDLE_VALUE)
{
ERR("Failed to open %s: %lu\n", fname, GetLastError());
free(wname);
return ret;
}
free(wname);
wname = NULL;
fmap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
if(!fmap)
{
ERR("Failed to create map for %s: %lu\n", fname, GetLastError());
CloseHandle(file);
return ret;
}
ptr = MapViewOfFile(fmap, FILE_MAP_READ, 0, 0, 0);
if(!ptr)
{
ERR("Failed to map %s: %lu\n", fname, GetLastError());
CloseHandle(fmap);
CloseHandle(file);
return ret;
}
if(VirtualQuery(ptr, &meminfo, sizeof(meminfo)) != sizeof(meminfo))
{
ERR("Failed to get map size for %s: %lu\n", fname, GetLastError());
UnmapViewOfFile(ptr);
CloseHandle(fmap);
CloseHandle(file);
return ret;
}
ret.file = file;
ret.fmap = fmap;
ret.ptr = ptr;
ret.len = meminfo.RegionSize;
return ret;
}
void UnmapFileMem(const struct FileMapping *mapping)
{
UnmapViewOfFile(mapping->ptr);
CloseHandle(mapping->fmap);
CloseHandle(mapping->file);
}
#else
al_string GetProcPath(void)
{
al_string ret = AL_STRING_INIT_STATIC();
const char *fname;
char *pathname, *sep;
size_t pathlen;
ssize_t len;
pathlen = 256;
pathname = malloc(pathlen);
fname = "/proc/self/exe";
len = readlink(fname, pathname, pathlen);
if(len == -1 && errno == ENOENT)
{
fname = "/proc/self/file";
len = readlink(fname, pathname, pathlen);
}
while(len > 0 && (size_t)len == pathlen)
{
free(pathname);
pathlen <<= 1;
pathname = malloc(pathlen);
len = readlink(fname, pathname, pathlen);
}
if(len <= 0)
{
free(pathname);
WARN("Failed to readlink %s: %s\n", fname, strerror(errno));
return ret;
}
pathname[len] = 0;
sep = strrchr(pathname, '/');
if(sep)
alstr_copy_range(&ret, pathname, sep);
else
alstr_copy_cstr(&ret, pathname);
free(pathname);
TRACE("Got: %s\n", alstr_get_cstr(ret));
return ret;
}
#ifdef HAVE_DLFCN_H
void *LoadLib(const char *name)
{
const char *err;
void *handle;
dlerror();
handle = dlopen(name, RTLD_NOW);
if((err=dlerror()) != NULL)
handle = NULL;
return handle;
}
void CloseLib(void *handle)
{ dlclose(handle); }
void *GetSymbol(void *handle, const char *name)
{
const char *err;
void *sym;
dlerror();
sym = dlsym(handle, name);
if((err=dlerror()) != NULL)
{
WARN("Failed to load %s: %s\n", name, err);
sym = NULL;
}
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, vector_al_string *results)
{
size_t extlen = strlen(ext);
DIR *dir;
TRACE("Searching %s for *%s\n", path, ext);
dir = opendir(path);
if(dir != NULL)
{
size_t base = VECTOR_SIZE(*results);
struct dirent *dirent;
while((dirent=readdir(dir)) != NULL)
{
al_string str;
size_t len;
if(strcmp(dirent->d_name, ".") == 0 || strcmp(dirent->d_name, "..") == 0)
continue;
len = strlen(dirent->d_name);
if(!(len > extlen))
continue;
if(strcasecmp(dirent->d_name+len-extlen, ext) != 0)
continue;
AL_STRING_INIT(str);
alstr_copy_cstr(&str, path);
if(VECTOR_BACK(str) != '/')
alstr_append_char(&str, '/');
alstr_append_cstr(&str, dirent->d_name);
TRACE("Got result %s\n", alstr_get_cstr(str));
VECTOR_PUSH_BACK(*results, str);
}
closedir(dir);
if(VECTOR_SIZE(*results) > base)
qsort(VECTOR_BEGIN(*results)+base, VECTOR_SIZE(*results)-base,
sizeof(VECTOR_FRONT(*results)), StringSortCompare);
}
}
vector_al_string SearchDataFiles(const char *ext, const char *subdir)
{
static RefCount search_lock;
vector_al_string results = VECTOR_INIT_STATIC();
while(ATOMIC_EXCHANGE_SEQ(uint, &search_lock, 1) == 1)
althrd_yield();
if(subdir[0] == '/')
DirectorySearch(subdir, ext, &results);
else
{
al_string path = AL_STRING_INIT_STATIC();
const char *str, *next;
char cwdbuf[PATH_MAX];
/* Search the app-local directory. */
if((str=getenv("ALSOFT_LOCAL_PATH")) && *str != '\0')
DirectorySearch(str, ext, &results);
else if(getcwd(cwdbuf, sizeof(cwdbuf)))
DirectorySearch(cwdbuf, ext, &results);
else
DirectorySearch(".", ext, &results);
// Search local data dir
if((str=getenv("XDG_DATA_HOME")) != NULL && str[0] != '\0')
{
alstr_copy_cstr(&path, str);
if(VECTOR_BACK(path) != '/')
alstr_append_char(&path, '/');
alstr_append_cstr(&path, subdir);
DirectorySearch(alstr_get_cstr(path), ext, &results);
}
else if((str=getenv("HOME")) != NULL && str[0] != '\0')
{
alstr_copy_cstr(&path, str);
if(VECTOR_BACK(path) == '/')
{
VECTOR_POP_BACK(path);
*VECTOR_END(path) = 0;
}
alstr_append_cstr(&path, "/.local/share/");
alstr_append_cstr(&path, subdir);
DirectorySearch(alstr_get_cstr(path), ext, &results);
}
// Search global data dirs
if((str=getenv("XDG_DATA_DIRS")) == NULL || str[0] == '\0')
str = "/usr/local/share/:/usr/share/";
next = str;
while((str=next) != NULL && str[0] != '\0')
{
next = strchr(str, ':');
if(!next)
alstr_copy_cstr(&path, str);
else
{
alstr_copy_range(&path, str, next);
++next;
}
if(!alstr_empty(path))
{
if(VECTOR_BACK(path) != '/')
alstr_append_char(&path, '/');
alstr_append_cstr(&path, subdir);
DirectorySearch(alstr_get_cstr(path), ext, &results);
}
}
alstr_reset(&path);
}
ATOMIC_STORE_SEQ(&search_lock, 0);
return results;
}
struct FileMapping MapFileToMem(const char *fname)
{
struct FileMapping ret = { -1, NULL, 0 };
struct stat sbuf;
void *ptr;
int fd;
fd = open(fname, O_RDONLY, 0);
if(fd == -1)
{
ERR("Failed to open %s: (%d) %s\n", fname, errno, strerror(errno));
return ret;
}
if(fstat(fd, &sbuf) == -1)
{
ERR("Failed to stat %s: (%d) %s\n", fname, errno, strerror(errno));
close(fd);
return ret;
}
ptr = mmap(NULL, sbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if(ptr == MAP_FAILED)
{
ERR("Failed to map %s: (%d) %s\n", fname, errno, strerror(errno));
close(fd);
return ret;
}
ret.fd = fd;
ret.ptr = ptr;
ret.len = sbuf.st_size;
return ret;
}
void UnmapFileMem(const struct FileMapping *mapping)
{
munmap(mapping->ptr, mapping->len);
close(mapping->fd);
}
#endif
void SetRTPriority(void)
{
ALboolean failed = AL_FALSE;
#ifdef _WIN32
if(RTPrioLevel > 0)
failed = !SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
#elif 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, &param);
}
#else
/* Real-time priority not available */
failed = (RTPrioLevel>0);
#endif
if(failed)
ERR("Failed to set priority level for thread\n");
}
extern inline void alstr_reset(al_string *str);
extern inline size_t alstr_length(const_al_string str);
extern inline ALboolean alstr_empty(const_al_string str);
extern inline const al_string_char_type *alstr_get_cstr(const_al_string str);
void alstr_clear(al_string *str)
{
if(!alstr_empty(*str))
{
/* Reserve one more character than the total size of the string. This
* is to ensure we have space to add a null terminator in the string
* data so it can be used as a C-style string.
*/
VECTOR_RESIZE(*str, 0, 1);
VECTOR_ELEM(*str, 0) = 0;
}
}
static inline int alstr_compare(const al_string_char_type *str1, size_t str1len,
const al_string_char_type *str2, size_t str2len)
{
size_t complen = (str1len < str2len) ? str1len : str2len;
int ret = memcmp(str1, str2, complen);
if(ret == 0)
{
if(str1len > str2len) return 1;
if(str1len < str2len) return -1;
}
return ret;
}
int alstr_cmp(const_al_string str1, const_al_string str2)
{
return alstr_compare(&VECTOR_FRONT(str1), alstr_length(str1),
&VECTOR_FRONT(str2), alstr_length(str2));
}
int alstr_cmp_cstr(const_al_string str1, const al_string_char_type *str2)
{
return alstr_compare(&VECTOR_FRONT(str1), alstr_length(str1),
str2, strlen(str2));
}
void alstr_copy(al_string *str, const_al_string from)
{
size_t len = alstr_length(from);
size_t i;
VECTOR_RESIZE(*str, len, len+1);
for(i = 0;i < len;i++)
VECTOR_ELEM(*str, i) = VECTOR_ELEM(from, i);
VECTOR_ELEM(*str, i) = 0;
}
void alstr_copy_cstr(al_string *str, const al_string_char_type *from)
{
size_t len = strlen(from);
size_t i;
VECTOR_RESIZE(*str, len, len+1);
for(i = 0;i < len;i++)
VECTOR_ELEM(*str, i) = from[i];
VECTOR_ELEM(*str, i) = 0;
}
void alstr_copy_range(al_string *str, const al_string_char_type *from, const al_string_char_type *to)
{
size_t len = to - from;
size_t i;
VECTOR_RESIZE(*str, len, len+1);
for(i = 0;i < len;i++)
VECTOR_ELEM(*str, i) = from[i];
VECTOR_ELEM(*str, i) = 0;
}
void alstr_append_char(al_string *str, const al_string_char_type c)
{
size_t len = alstr_length(*str);
VECTOR_RESIZE(*str, len, len+2);
VECTOR_PUSH_BACK(*str, c);
VECTOR_ELEM(*str, len+1) = 0;
}
void alstr_append_cstr(al_string *str, const al_string_char_type *from)
{
size_t len = strlen(from);
if(len != 0)
{
size_t base = alstr_length(*str);
size_t i;
VECTOR_RESIZE(*str, base+len, base+len+1);
for(i = 0;i < len;i++)
VECTOR_ELEM(*str, base+i) = from[i];
VECTOR_ELEM(*str, base+i) = 0;
}
}
void alstr_append_range(al_string *str, const al_string_char_type *from, const al_string_char_type *to)
{
size_t len = to - from;
if(len != 0)
{
size_t base = alstr_length(*str);
size_t i;
VECTOR_RESIZE(*str, base+len, base+len+1);
for(i = 0;i < len;i++)
VECTOR_ELEM(*str, base+i) = from[i];
VECTOR_ELEM(*str, base+i) = 0;
}
}
#ifdef _WIN32
void alstr_copy_wcstr(al_string *str, const wchar_t *from)
{
int len;
if((len=WideCharToMultiByte(CP_UTF8, 0, from, -1, NULL, 0, NULL, NULL)) > 0)
{
VECTOR_RESIZE(*str, len-1, len);
WideCharToMultiByte(CP_UTF8, 0, from, -1, &VECTOR_FRONT(*str), len, NULL, NULL);
VECTOR_ELEM(*str, len-1) = 0;
}
}
void alstr_append_wcstr(al_string *str, const wchar_t *from)
{
int len;
if((len=WideCharToMultiByte(CP_UTF8, 0, from, -1, NULL, 0, NULL, NULL)) > 0)
{
size_t base = alstr_length(*str);
VECTOR_RESIZE(*str, base+len-1, base+len);
WideCharToMultiByte(CP_UTF8, 0, from, -1, &VECTOR_ELEM(*str, base), len, NULL, NULL);
VECTOR_ELEM(*str, base+len-1) = 0;
}
}
void alstr_append_wrange(al_string *str, const wchar_t *from, const wchar_t *to)
{
int len;
if((len=WideCharToMultiByte(CP_UTF8, 0, from, (int)(to-from), NULL, 0, NULL, NULL)) > 0)
{
size_t base = alstr_length(*str);
VECTOR_RESIZE(*str, base+len, base+len+1);
WideCharToMultiByte(CP_UTF8, 0, from, (int)(to-from), &VECTOR_ELEM(*str, base), len+1, NULL, NULL);
VECTOR_ELEM(*str, base+len) = 0;
}
}
#endif
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