Respect max fps if specified in the request.
Sleep for appropriate amount of time before acquiring new image
from Surface in case acquiring image imediatelly would exceed max fps
specified by the request.
This is relanding previously reverted change, which contained a bug
overriding the max fps to 1 in case it was explicitly set.
Bug: 338251124
Test: atest CtsVirtualDevicesCameraCtsTestCases
Change-Id: Iab6d951a296c1559658565b37f64516de4dd464b
diff --git a/services/camera/virtualcamera/VirtualCameraRenderThread.h b/services/camera/virtualcamera/VirtualCameraRenderThread.h
index e222d5b..dfb6f7b 100644
--- a/services/camera/virtualcamera/VirtualCameraRenderThread.h
+++ b/services/camera/virtualcamera/VirtualCameraRenderThread.h
@@ -17,6 +17,7 @@
#ifndef ANDROID_COMPANION_VIRTUALCAMERA_VIRTUALCAMERARENDERTHREAD_H
#define ANDROID_COMPANION_VIRTUALCAMERA_VIRTUALCAMERARENDERTHREAD_H
+#include <atomic>
#include <cstdint>
#include <deque>
#include <future>
@@ -195,6 +196,9 @@
std::condition_variable mCondVar;
volatile bool mPendingExit GUARDED_BY(mLock);
+ // Acquisition timestamp of last frame.
+ std::atomic<uint64_t> mLastAcquisitionTimestampNanoseconds;
+
// EGL helpers - constructed and accessed only from rendering thread.
std::unique_ptr<EglDisplayContext> mEglDisplayContext;
std::unique_ptr<EglTextureProgram> mEglTextureYuvProgram;