Add support for sending VSYNC events to the framework
use gui/DisplayEvent to receive the events. Events are
dispatched through a unix pipe, so the API is compatible
with utils/Looper. see gui/DisplayEvent.h for more info.
Bug: 1475048
Change-Id: Ia720f64d1b950328b47b22c6a86042e481d35f09
diff --git a/services/surfaceflinger/tests/vsync/Android.mk b/services/surfaceflinger/tests/vsync/Android.mk
new file mode 100644
index 0000000..9181760
--- /dev/null
+++ b/services/surfaceflinger/tests/vsync/Android.mk
@@ -0,0 +1,18 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+ vsync.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+ libcutils \
+ libutils \
+ libbinder \
+ libui \
+ libgui
+
+LOCAL_MODULE:= test-vsync-events
+
+LOCAL_MODULE_TAGS := tests
+
+include $(BUILD_EXECUTABLE)
diff --git a/services/surfaceflinger/tests/vsync/vsync.cpp b/services/surfaceflinger/tests/vsync/vsync.cpp
new file mode 100644
index 0000000..4f79080
--- /dev/null
+++ b/services/surfaceflinger/tests/vsync/vsync.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gui/DisplayEventReceiver.h>
+#include <utils/Looper.h>
+
+using namespace android;
+
+int receiver(int fd, int events, void* data)
+{
+ DisplayEventReceiver* q = (DisplayEventReceiver*)data;
+
+ ssize_t n;
+ DisplayEventReceiver::Event buffer[1];
+
+ static nsecs_t oldTimeStamp = 0;
+
+ while ((n = q->getEvents(buffer, 1)) > 0) {
+ for (int i=0 ; i<n ; i++) {
+ if (buffer[i].header.type == DisplayEventReceiver::DISPLAY_EVENT_VSYNC) {
+ printf("event vsync: count=%d\t", buffer[i].vsync.count);
+ }
+ if (oldTimeStamp) {
+ float t = float(buffer[i].header.timestamp - oldTimeStamp) / s2ns(1);
+ printf("%f ms (%f Hz)\n", t*1000, 1.0/t);
+ }
+ oldTimeStamp = buffer[i].header.timestamp;
+ }
+ }
+ if (n<0) {
+ printf("error reading events (%s)\n", strerror(-n));
+ }
+ return 1;
+}
+
+int main(int argc, char** argv)
+{
+ DisplayEventReceiver myDisplayEvent;
+
+
+ sp<Looper> loop = new Looper(false);
+ loop->addFd(myDisplayEvent.getFd(), 0, ALOOPER_EVENT_INPUT, receiver,
+ &myDisplayEvent);
+
+ do {
+ //printf("about to poll...\n");
+ int32_t ret = loop->pollOnce(-1);
+ switch (ret) {
+ case ALOOPER_POLL_WAKE:
+ //("ALOOPER_POLL_WAKE\n");
+ break;
+ case ALOOPER_POLL_CALLBACK:
+ //("ALOOPER_POLL_CALLBACK\n");
+ break;
+ case ALOOPER_POLL_TIMEOUT:
+ printf("ALOOPER_POLL_TIMEOUT\n");
+ break;
+ case ALOOPER_POLL_ERROR:
+ printf("ALOOPER_POLL_TIMEOUT\n");
+ break;
+ default:
+ printf("ugh? poll returned %d\n", ret);
+ break;
+ }
+ } while (1);
+
+ return 0;
+}
diff --git a/services/surfaceflinger/tests/waitforvsync/Android.mk b/services/surfaceflinger/tests/waitforvsync/Android.mk
new file mode 100644
index 0000000..c25f5ab
--- /dev/null
+++ b/services/surfaceflinger/tests/waitforvsync/Android.mk
@@ -0,0 +1,14 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+ waitforvsync.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+ libcutils \
+
+LOCAL_MODULE:= test-waitforvsync
+
+LOCAL_MODULE_TAGS := tests
+
+include $(BUILD_EXECUTABLE)
diff --git a/services/surfaceflinger/tests/waitforvsync/waitforvsync.cpp b/services/surfaceflinger/tests/waitforvsync/waitforvsync.cpp
new file mode 100644
index 0000000..279b88b
--- /dev/null
+++ b/services/surfaceflinger/tests/waitforvsync/waitforvsync.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#ifndef FBIO_WAITFORVSYNC
+#define FBIO_WAITFORVSYNC _IOW('F', 0x20, __u32)
+#endif
+
+int main(int argc, char** argv) {
+ int fd = open("/dev/graphics/fb0", O_RDWR);
+ if (fd >= 0) {
+ do {
+ uint32_t crt = 0;
+ int err = ioctl(fd, FBIO_WAITFORVSYNC, &crt);
+ if (err < 0) {
+ printf("FBIO_WAITFORVSYNC error: %s\n", strerror(errno));
+ break;
+ }
+ } while(1);
+ close(fd);
+ }
+ return 0;
+}