early-access version 1432

externals/ffmpeg/compat/dispatch_semaphore/semaphore.h

@@ -0,0 +1,42 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef COMPAT_DISPATCH_SEMAPHORE_SEMAPHORE_H
+#define COMPAT_DISPATCH_SEMAPHORE_SEMAPHORE_H
+
+#include <dispatch/dispatch.h>
+#include <errno.h>
+
+#define sem_t dispatch_semaphore_t
+#define sem_post(psem)              dispatch_semaphore_signal(*psem)
+#define sem_wait(psem)              dispatch_semaphore_wait(*psem, DISPATCH_TIME_FOREVER)
+#define sem_timedwait(psem, val)    dispatch_semaphore_wait(*psem, dispatch_walltime(val, 0))
+#define sem_destroy(psem)           dispatch_release(*psem)
+
+static inline int compat_sem_init(dispatch_semaphore_t *psem,
+                                  int unused, int val)
+{
+    int ret = !!(*psem = dispatch_semaphore_create(val)) - 1;
+    if (ret < 0)
+        errno = ENOMEM;
+    return ret;
+}
+
+#define sem_init compat_sem_init
+
+#endif /* COMPAT_DISPATCH_SEMAPHORE_SEMAPHORE_H */