First Commit

externals/openal-soft/examples/common/alhelpers.h

@@ -0,0 +1,38 @@
+#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);
+
+/* C doesn't allow casting between function and non-function pointer types, so
+ * with C99 we need to use a union to reinterpret the pointer type. Pre-C99
+ * still needs to use a normal cast and live with the warning (C++ is fine with
+ * a regular reinterpret_cast).
+ */
+#if __STDC_VERSION__ >= 199901L
+#define FUNCTION_CAST(T, ptr) (union{void *p; T f;}){ptr}.f
+#elif defined(__cplusplus)
+#define FUNCTION_CAST(T, ptr) reinterpret_cast<T>(ptr)
+#else
+#define FUNCTION_CAST(T, ptr) (T)(ptr)
+#endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* ALHELPERS_H */