update openal-soft

sync point: master-ac5d40e40a0155351fe1be4aab30017b6a13a859

Engine/lib/openal-soft/examples/common/alhelpers.c

@@ -0,0 +1,193 @@
+/*
+ * OpenAL Helpers
+ *
+ * Copyright (c) 2011 by Chris Robinson <chris.kcat@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/* This file contains routines to help with some menial OpenAL-related tasks,
+ * such as opening a device and setting up a context, closing the device and
+ * destroying its context, converting between frame counts and byte lengths,
+ * finding an appropriate buffer format, and getting readable strings for
+ * channel configs and sample types. */
+
+#include "alhelpers.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+#include "AL/al.h"
+#include "AL/alc.h"
+#include "AL/alext.h"
+
+
+/* InitAL opens a device and sets up a context using default attributes, making
+ * the program ready to call OpenAL functions. */
+int InitAL(char ***argv, int *argc)
+{
+    const ALCchar *name;
+    ALCdevice *device;
+    ALCcontext *ctx;
+
+    /* Open and initialize a device */
+    device = NULL;
+    if(argc && argv && *argc > 1 && strcmp((*argv)[0], "-device") == 0)
+    {
+        device = alcOpenDevice((*argv)[1]);
+        if(!device)
+            fprintf(stderr, "Failed to open \"%s\", trying default\n", (*argv)[1]);
+        (*argv) += 2;
+        (*argc) -= 2;
+    }
+    if(!device)
+        device = alcOpenDevice(NULL);
+    if(!device)
+    {
+        fprintf(stderr, "Could not open a device!\n");
+        return 1;
+    }
+
+    ctx = alcCreateContext(device, NULL);
+    if(ctx == NULL || alcMakeContextCurrent(ctx) == ALC_FALSE)
+    {
+        if(ctx != NULL)
+            alcDestroyContext(ctx);
+        alcCloseDevice(device);
+        fprintf(stderr, "Could not set a context!\n");
+        return 1;
+    }
+
+    name = NULL;
+    if(alcIsExtensionPresent(device, "ALC_ENUMERATE_ALL_EXT"))
+        name = alcGetString(device, ALC_ALL_DEVICES_SPECIFIER);
+    if(!name || alcGetError(device) != AL_NO_ERROR)
+        name = alcGetString(device, ALC_DEVICE_SPECIFIER);
+    printf("Opened \"%s\"\n", name);
+
+    return 0;
+}
+
+/* CloseAL closes the device belonging to the current context, and destroys the
+ * context. */
+void CloseAL(void)
+{
+    ALCdevice *device;
+    ALCcontext *ctx;
+
+    ctx = alcGetCurrentContext();
+    if(ctx == NULL)
+        return;
+
+    device = alcGetContextsDevice(ctx);
+
+    alcMakeContextCurrent(NULL);
+    alcDestroyContext(ctx);
+    alcCloseDevice(device);
+}
+
+
+const char *FormatName(ALenum format)
+{
+    switch(format)
+    {
+    case AL_FORMAT_MONO8: return "Mono, U8";
+    case AL_FORMAT_MONO16: return "Mono, S16";
+    case AL_FORMAT_MONO_FLOAT32: return "Mono, Float32";
+    case AL_FORMAT_STEREO8: return "Stereo, U8";
+    case AL_FORMAT_STEREO16: return "Stereo, S16";
+    case AL_FORMAT_STEREO_FLOAT32: return "Stereo, Float32";
+    case AL_FORMAT_BFORMAT2D_8: return "B-Format 2D, U8";
+    case AL_FORMAT_BFORMAT2D_16: return "B-Format 2D, S16";
+    case AL_FORMAT_BFORMAT2D_FLOAT32: return "B-Format 2D, Float32";
+    case AL_FORMAT_BFORMAT3D_8: return "B-Format 3D, U8";
+    case AL_FORMAT_BFORMAT3D_16: return "B-Format 3D, S16";
+    case AL_FORMAT_BFORMAT3D_FLOAT32: return "B-Format 3D, Float32";
+    }
+    return "Unknown Format";
+}
+
+
+#ifdef _WIN32
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <mmsystem.h>
+
+int altime_get(void)
+{
+    static int start_time = 0;
+    int cur_time;
+    union {
+        FILETIME ftime;
+        ULARGE_INTEGER ulint;
+    } systime;
+    GetSystemTimeAsFileTime(&systime.ftime);
+    /* FILETIME is in 100-nanosecond units, or 1/10th of a microsecond. */
+    cur_time = (int)(systime.ulint.QuadPart/10000);
+
+    if(!start_time)
+        start_time = cur_time;
+    return cur_time - start_time;
+}
+
+void al_nssleep(unsigned long nsec)
+{
+    Sleep(nsec / 1000000);
+}
+
+#else
+
+#include <sys/time.h>
+#include <unistd.h>
+#include <time.h>
+
+int altime_get(void)
+{
+    static int start_time = 0u;
+    int cur_time;
+
+#if _POSIX_TIMERS > 0
+    struct timespec ts;
+    int ret = clock_gettime(CLOCK_REALTIME, &ts);
+    if(ret != 0) return 0;
+    cur_time = (int)(ts.tv_sec*1000 + ts.tv_nsec/1000000);
+#else /* _POSIX_TIMERS > 0 */
+    struct timeval tv;
+    int ret = gettimeofday(&tv, NULL);
+    if(ret != 0) return 0;
+    cur_time = (int)(tv.tv_sec*1000 + tv.tv_usec/1000);
+#endif
+
+    if(!start_time)
+        start_time = cur_time;
+    return cur_time - start_time;
+}
+
+void al_nssleep(unsigned long nsec)
+{
+    struct timespec ts, rem;
+    ts.tv_sec = (time_t)(nsec / 1000000000ul);
+    ts.tv_nsec = (long)(nsec % 1000000000ul);
+    while(nanosleep(&ts, &rem) == -1 && errno == EINTR)
+        ts = rem;
+}
+
+#endif

Engine/lib/openal-soft/examples/common/alhelpers.h

@@ -0,0 +1,25 @@
+#ifndef ALHELPERS_H
+#define ALHELPERS_H
+
+#include "AL/al.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Some helper functions to get the name from the format enums. */
+const char *FormatName(ALenum type);
+
+/* Easy device init/deinit functions. InitAL returns 0 on success. */
+int InitAL(char ***argv, int *argc);
+void CloseAL(void);
+
+/* Cross-platform timeget and sleep functions. */
+int altime_get(void);
+void al_nssleep(unsigned long nsec);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* ALHELPERS_H */