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https://github.com/QB64Official/qb64.git
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466 lines
11 KiB
C
466 lines
11 KiB
C
/**
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* OpenAL cross platform audio library
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* Copyright (C) 2011 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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 <stdlib.h>
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#endif
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#if defined(HAVE_GUIDDEF_H) || defined(HAVE_INITGUID_H)
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#define INITGUID
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#include <windows.h>
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#ifdef HAVE_GUIDDEF_H
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#include <guiddef.h>
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#else
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#include <initguid.h>
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#endif
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DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80,0x00, 0x00,0xaa,0x00,0x38,0x9b,0x71);
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DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80,0x00, 0x00,0xaa,0x00,0x38,0x9b,0x71);
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DEFINE_GUID(IID_IDirectSoundNotify, 0xb0210783, 0x89cd, 0x11d0, 0xaf,0x08, 0x00,0xa0,0xc9,0x25,0xcd,0x16);
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DEFINE_GUID(CLSID_MMDeviceEnumerator, 0xbcde0395, 0xe52f, 0x467c, 0x8e,0x3d, 0xc4,0x57,0x92,0x91,0x69,0x2e);
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DEFINE_GUID(IID_IMMDeviceEnumerator, 0xa95664d2, 0x9614, 0x4f35, 0xa7,0x46, 0xde,0x8d,0xb6,0x36,0x17,0xe6);
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DEFINE_GUID(IID_IAudioClient, 0x1cb9ad4c, 0xdbfa, 0x4c32, 0xb1,0x78, 0xc2,0xf5,0x68,0xa7,0x03,0xb2);
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DEFINE_GUID(IID_IAudioRenderClient, 0xf294acfc, 0x3146, 0x4483, 0xa7,0xbf, 0xad,0xdc,0xa7,0xc2,0x60,0xe2);
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#ifdef HAVE_MMDEVAPI
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#include <devpropdef.h>
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DEFINE_DEVPROPKEY(DEVPKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80,0x20, 0x67,0xd1,0x46,0xa8,0x50,0xe0, 14);
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#endif
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#endif
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#include "alMain.h"
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#ifdef _WIN32
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void pthread_once(pthread_once_t *once, void (*callback)(void))
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{
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LONG ret;
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while((ret=InterlockedExchange(once, 1)) == 1)
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sched_yield();
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if(ret == 0)
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callback();
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InterlockedExchange(once, 2);
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}
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int pthread_key_create(pthread_key_t *key, void (*callback)(void*))
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{
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*key = TlsAlloc();
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if(callback)
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InsertUIntMapEntry(&TlsDestructor, *key, callback);
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return 0;
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}
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int pthread_key_delete(pthread_key_t key)
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{
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InsertUIntMapEntry(&TlsDestructor, key, NULL);
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TlsFree(key);
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return 0;
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}
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void *pthread_getspecific(pthread_key_t key)
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{ return TlsGetValue(key); }
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int pthread_setspecific(pthread_key_t key, void *val)
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{
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TlsSetValue(key, val);
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return 0;
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}
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void *LoadLib(const char *name)
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{ return LoadLibraryA(name); }
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void CloseLib(void *handle)
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{ FreeLibrary((HANDLE)handle); }
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void *GetSymbol(void *handle, const char *name)
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{
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void *ret;
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ret = (void*)GetProcAddress((HANDLE)handle, name);
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if(ret == NULL)
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ERR("Failed to load %s\n", name);
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return ret;
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}
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WCHAR *strdupW(const WCHAR *str)
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{
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const WCHAR *n;
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WCHAR *ret;
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size_t len;
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n = str;
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while(*n) n++;
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len = n - str;
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ret = calloc(sizeof(WCHAR), len+1);
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if(ret != NULL)
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memcpy(ret, str, sizeof(WCHAR)*len);
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return ret;
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}
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#else
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void InitializeCriticalSection(CRITICAL_SECTION *cs)
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{
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pthread_mutexattr_t attrib;
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int ret;
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ret = pthread_mutexattr_init(&attrib);
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assert(ret == 0);
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ret = pthread_mutexattr_settype(&attrib, PTHREAD_MUTEX_RECURSIVE);
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#ifdef HAVE_PTHREAD_NP_H
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if(ret != 0)
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ret = pthread_mutexattr_setkind_np(&attrib, PTHREAD_MUTEX_RECURSIVE);
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#endif
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assert(ret == 0);
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ret = pthread_mutex_init(cs, &attrib);
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assert(ret == 0);
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pthread_mutexattr_destroy(&attrib);
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}
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void DeleteCriticalSection(CRITICAL_SECTION *cs)
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{
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int ret;
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ret = pthread_mutex_destroy(cs);
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assert(ret == 0);
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}
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void EnterCriticalSection(CRITICAL_SECTION *cs)
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{
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int ret;
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ret = pthread_mutex_lock(cs);
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assert(ret == 0);
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}
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void LeaveCriticalSection(CRITICAL_SECTION *cs)
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{
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int ret;
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ret = pthread_mutex_unlock(cs);
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assert(ret == 0);
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}
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/* NOTE: This wrapper isn't quite accurate as it returns an ALuint, as opposed
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* to the expected DWORD. Both are defined as unsigned 32-bit types, however.
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* Additionally, Win32 is supposed to measure the time since Windows started,
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* as opposed to the actual time. */
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ALuint timeGetTime(void)
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{
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#if _POSIX_TIMERS > 0
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struct timespec ts;
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int ret = -1;
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#if defined(_POSIX_MONOTONIC_CLOCK) && (_POSIX_MONOTONIC_CLOCK >= 0)
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#if _POSIX_MONOTONIC_CLOCK == 0
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static int hasmono = 0;
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if(hasmono > 0 || (hasmono == 0 &&
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(hasmono=sysconf(_SC_MONOTONIC_CLOCK)) > 0))
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#endif
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ret = clock_gettime(CLOCK_MONOTONIC, &ts);
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#endif
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if(ret != 0)
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ret = clock_gettime(CLOCK_REALTIME, &ts);
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assert(ret == 0);
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return ts.tv_nsec/1000000 + ts.tv_sec*1000;
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#else
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struct timeval tv;
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int ret;
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ret = gettimeofday(&tv, NULL);
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assert(ret == 0);
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return tv.tv_usec/1000 + tv.tv_sec*1000;
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#endif
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}
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void Sleep(ALuint t)
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{
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struct timespec tv, rem;
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tv.tv_nsec = (t*1000000)%1000000000;
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tv.tv_sec = t/1000;
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while(nanosleep(&tv, &rem) == -1 && errno == EINTR)
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tv = rem;
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}
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#ifdef HAVE_DLFCN_H
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void *LoadLib(const char *name)
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{
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const char *err;
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void *handle;
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dlerror();
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handle = dlopen(name, RTLD_NOW);
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if((err=dlerror()) != NULL)
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handle = NULL;
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return handle;
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}
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void CloseLib(void *handle)
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{ dlclose(handle); }
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void *GetSymbol(void *handle, const char *name)
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{
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const char *err;
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void *sym;
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dlerror();
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sym = dlsym(handle, name);
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if((err=dlerror()) != NULL)
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{
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WARN("Failed to load %s: %s\n", name, err);
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sym = NULL;
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}
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return sym;
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}
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#endif
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#endif
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void al_print(const char *func, const char *fmt, ...)
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{
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char str[256];
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int i;
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i = snprintf(str, sizeof(str), "AL lib: %s: ", func);
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if(i < (int)sizeof(str) && i > 0)
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{
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va_list ap;
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va_start(ap, fmt);
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vsnprintf(str+i, sizeof(str)-i, fmt, ap);
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va_end(ap);
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}
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str[sizeof(str)-1] = 0;
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fprintf(LogFile, "%s", str);
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fflush(LogFile);
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}
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void SetRTPriority(void)
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{
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ALboolean failed = AL_FALSE;
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#ifdef _WIN32
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if(RTPrioLevel > 0)
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failed = !SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
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#elif defined(HAVE_PTHREAD_SETSCHEDPARAM) && !defined(__OpenBSD__)
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if(RTPrioLevel > 0)
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{
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struct sched_param param;
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/* Use the minimum real-time priority possible for now (on Linux this
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* should be 1 for SCHED_RR) */
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param.sched_priority = sched_get_priority_min(SCHED_RR);
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failed = !!pthread_setschedparam(pthread_self(), SCHED_RR, ¶m);
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}
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#else
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/* Real-time priority not available */
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failed = (RTPrioLevel>0);
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#endif
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if(failed)
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ERR("Failed to set priority level for thread\n");
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}
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static void Lock(volatile ALenum *l)
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{
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while(ExchangeInt(l, AL_TRUE) == AL_TRUE)
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sched_yield();
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}
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static void Unlock(volatile ALenum *l)
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{
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ExchangeInt(l, AL_FALSE);
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}
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void RWLockInit(RWLock *lock)
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{
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lock->read_count = 0;
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lock->write_count = 0;
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lock->read_lock = AL_FALSE;
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lock->read_entry_lock = AL_FALSE;
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lock->write_lock = AL_FALSE;
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}
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void ReadLock(RWLock *lock)
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{
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Lock(&lock->read_entry_lock);
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Lock(&lock->read_lock);
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if(IncrementRef(&lock->read_count) == 1)
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Lock(&lock->write_lock);
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Unlock(&lock->read_lock);
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Unlock(&lock->read_entry_lock);
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}
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void ReadUnlock(RWLock *lock)
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{
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if(DecrementRef(&lock->read_count) == 0)
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Unlock(&lock->write_lock);
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}
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void WriteLock(RWLock *lock)
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{
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if(IncrementRef(&lock->write_count) == 1)
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Lock(&lock->read_lock);
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Lock(&lock->write_lock);
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}
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void WriteUnlock(RWLock *lock)
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{
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Unlock(&lock->write_lock);
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if(DecrementRef(&lock->write_count) == 0)
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Unlock(&lock->read_lock);
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}
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void InitUIntMap(UIntMap *map, ALsizei limit)
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{
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map->array = NULL;
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map->size = 0;
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map->maxsize = 0;
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map->limit = limit;
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RWLockInit(&map->lock);
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}
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void ResetUIntMap(UIntMap *map)
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{
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WriteLock(&map->lock);
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free(map->array);
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map->array = NULL;
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map->size = 0;
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map->maxsize = 0;
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WriteUnlock(&map->lock);
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}
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ALenum InsertUIntMapEntry(UIntMap *map, ALuint key, ALvoid *value)
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{
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ALsizei pos = 0;
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WriteLock(&map->lock);
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if(map->size > 0)
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{
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ALsizei low = 0;
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ALsizei high = map->size - 1;
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while(low < high)
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{
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ALsizei mid = low + (high-low)/2;
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if(map->array[mid].key < key)
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low = mid + 1;
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else
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high = mid;
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}
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if(map->array[low].key < key)
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low++;
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pos = low;
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}
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if(pos == map->size || map->array[pos].key != key)
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{
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if(map->size == map->limit)
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{
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WriteUnlock(&map->lock);
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return AL_OUT_OF_MEMORY;
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}
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if(map->size == map->maxsize)
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{
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ALvoid *temp = NULL;
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ALsizei newsize;
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newsize = (map->maxsize ? (map->maxsize<<1) : 4);
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if(newsize >= map->maxsize)
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temp = realloc(map->array, newsize*sizeof(map->array[0]));
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if(!temp)
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{
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WriteUnlock(&map->lock);
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return AL_OUT_OF_MEMORY;
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}
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map->array = temp;
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map->maxsize = newsize;
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}
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if(pos < map->size)
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memmove(&map->array[pos+1], &map->array[pos],
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(map->size-pos)*sizeof(map->array[0]));
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map->size++;
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}
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map->array[pos].key = key;
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map->array[pos].value = value;
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WriteUnlock(&map->lock);
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return AL_NO_ERROR;
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}
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ALvoid *RemoveUIntMapKey(UIntMap *map, ALuint key)
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{
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ALvoid *ptr = NULL;
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WriteLock(&map->lock);
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if(map->size > 0)
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{
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ALsizei low = 0;
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ALsizei high = map->size - 1;
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while(low < high)
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{
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ALsizei mid = low + (high-low)/2;
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if(map->array[mid].key < key)
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low = mid + 1;
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else
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high = mid;
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}
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if(map->array[low].key == key)
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{
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ptr = map->array[low].value;
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if(low < map->size-1)
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memmove(&map->array[low], &map->array[low+1],
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(map->size-1-low)*sizeof(map->array[0]));
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map->size--;
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}
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}
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WriteUnlock(&map->lock);
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return ptr;
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}
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ALvoid *LookupUIntMapKey(UIntMap *map, ALuint key)
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{
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ALvoid *ptr = NULL;
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ReadLock(&map->lock);
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if(map->size > 0)
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{
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ALsizei low = 0;
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ALsizei high = map->size - 1;
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while(low < high)
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{
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ALsizei mid = low + (high-low)/2;
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if(map->array[mid].key < key)
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low = mid + 1;
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else
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high = mid;
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}
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if(map->array[low].key == key)
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ptr = map->array[low].value;
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}
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ReadUnlock(&map->lock);
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return ptr;
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}
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