GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

sample/uvc_app/common/events.c

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) XMEDIA. All rights reserved.
+ */
+
+#include <stdio.h>
+#include <time.h>
+#include <errno.h>
+#include <semaphore.h>
+
+static sem_t g_sem;
+
+int events_init(void)
+{
+    return sem_init(&g_sem, 0, 0);
+}
+
+int events_wait(void)
+{
+    return sem_wait(&g_sem);
+}
+
+int events_wait_timeout_ms(unsigned long long timeout_ms)
+{
+    int rc;
+    unsigned long long sec, nsec;
+    struct timespec tv = {0};
+
+    clock_gettime(CLOCK_REALTIME, &tv);
+
+    sec  = timeout_ms / 1000;
+    nsec = (timeout_ms % 1000) * 1000000;
+
+    tv.tv_nsec += nsec;
+    tv.tv_sec += sec;
+
+    rc = sem_timedwait(&g_sem, (const struct timespec*)&tv);
+    if (rc < 0) {
+        if (rc == ETIMEDOUT) {
+            printf("sem_timedwait timeout.\n");
+        } else {
+            printf("sem_timedwait fail.\n");
+        }
+    }
+
+    return 0;
+}
+
+int events_notity_one(void)
+{
+    return sem_post(&g_sem);
+}
+
+int events_deinit(void)
+{
+    return sem_destroy(&g_sem);
+}
+
+int node_wait(void)
+{
+    return events_wait();
+}
+
+int node_wait_timeout_ms(unsigned long long timeout_ms)
+{
+    return events_wait_timeout_ms(timeout_ms);
+}
+
+int node_notity_one(void)
+{
+    return events_notity_one();
+}