/** * 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 #include #include #include #include #ifdef HAVE_MALLOC_H #include #endif #ifdef HAVE_DIRENT_H #include #endif #ifdef __FreeBSD__ #include #include #endif #ifndef AL_NO_UID_DEFS #if defined(HAVE_GUIDDEF_H) || defined(HAVE_INITGUID_H) #define INITGUID #include #ifdef HAVE_GUIDDEF_H #include #else #include #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 #include #include 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 #endif #ifdef HAVE_INTRIN_H #include #endif #ifdef HAVE_CPUID_H #include #endif #ifdef HAVE_SYS_SYSCONF_H #include #endif #ifdef HAVE_FLOAT_H #include #endif #ifdef HAVE_IEEEFP_H #include #endif #ifndef _WIN32 #include #include #include #include #include #elif defined(_WIN32_IE) #include #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 ALuint64 ScaleRound(ALuint64 val, ALuint64 new_scale, ALuint64 old_scale); extern inline ALuint64 ScaleFloor(ALuint64 val, ALuint64 new_scale, ALuint64 old_scale); extern inline ALuint64 ScaleCeil(ALuint64 val, ALuint64 new_scale, ALuint64 old_scale); extern inline ALint fastf2i(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)); #ifdef _WIN32 /* HACK: A nasty bug in MinGW-W64 causes fegetenv and fesetenv to not save * and restore the FPU rounding mode, so we have to do it manually. Don't * know if this also applies to MSVC. */ ctl->round_mode = fegetround(); #endif #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)); #ifdef _WIN32 fesetround(ctl->round_mode); #endif #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: %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(&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(); char *pathname, *sep; size_t pathlen; #ifdef __FreeBSD__ int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1}; mib[3] = getpid(); if (sysctl(mib, 4, NULL, &pathlen, NULL, 0) == -1) { WARN("Failed to sysctl kern.proc.pathname.%d: %s\n", mib[3], strerror(errno)); return ret; } pathname = malloc(pathlen + 1); sysctl(mib, 4, (void*)pathname, &pathlen, NULL, 0); pathname[pathlen] = 0; #else const char *fname; 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; #endif 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(&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, ¶m); } #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