1 files changed, 126 insertions, 0 deletions
diff --git a/amber/camera/include/HdrPlusProfiler.h b/amber/camera/include/HdrPlusProfiler.h
new file mode 100644
index 0000000..cc277f8
--- /dev/null
+++ b/amber/camera/include/HdrPlusProfiler.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright 2017 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.
+ */
+#ifndef HDR_PLUS_PROFILER_H
+#define HDR_PLUS_PROFILER_H
+
+#ifndef ENABLE_HDRPLUS_PROFILER
+#define ENABLE_HDRPLUS_PROFILER 0
+#endif
+
+#if !ENABLE_HDRPLUS_PROFILER
+
+// If profiler is not enabled, make every macro a noop
+#define DECLARE_PROFILER_TIMER(_var, _description)
+#define START_PROFILER_TIMER(_var) do {} while(0)
+#define END_PROFILER_TIMER(_var) do {} while(0)
+#define SCOPE_PROFILER_TIMER(_description) do {} while(0)
+
+#else
+
+#include <string>
+
+/*
+ * Declare a profiler timer.
+ *
+ * _var is the variable that will be declared as a timer.
+ * _description is the description for this timer. It will be used when logging the timer duration.
+ */
+#define DECLARE_PROFILER_TIMER(_var, _description) pbcamera::TimerLogger _var = {_description}
+
+/*
+ * Start a timer.
+ *
+ * _var is a timer declared with DECALRE_PROFILER_TIMER.
+ */
+#define START_PROFILER_TIMER(_var) ((_var).start())
+
+/*
+ * End a timer and log the duration since last start.
+ *
+ * _var is a timer declared with DECALRE_PROFILER_TIMER.
+ */
+#define END_PROFILER_TIMER(_var) ((_var).end())
+
+/*
+ * Declare a scope timer that starts now and ends when it goes out of scope.
+ *
+ * __description is the description for this timer. It will be used when logging the timer duration.
+ */
+#define SCOPE_PROFILER_TIMER(_description) pbcamera::ScopeTimerLogger _timer(_description)
+
+namespace pbcamera {
+
+#define TIMER_TAG "[PROFILE_TIMER]"
+
+/**
+ * TimerLogger provides a timer to log the duration between start() and end().
+ */
+class TimerLogger {
+public:
+    TimerLogger(const char *name) : mName(name), mInvalid(true) {};
+
+    // Start the timer.
+    void start() {
+        mInvalid = (clock_gettime(kClockId, &mStartTime) != 0);
+    }
+
+    // End the timer and log the duration since last start.
+    void end() {
+        if (mInvalid) {
+            ALOGE("%s <%s> start time is invalid.", TIMER_TAG, mName.c_str());
+            return;
+        }
+
+        struct timespec endTime;
+        mInvalid = (clock_gettime(kClockId, &endTime) != 0);
+        if (mInvalid) {
+            ALOGE("%s <%s> end time is invalid.", TIMER_TAG, mName.c_str());
+            return;
+        }
+
+        int64_t startNs = static_cast<int64_t>(mStartTime.tv_sec) * kNsPerSec + mStartTime.tv_nsec;
+        int64_t endNs = static_cast<int64_t>(endTime.tv_sec) * kNsPerSec + endTime.tv_nsec;
+        ALOGI("%s <%s> took %f ms.", TIMER_TAG, mName.c_str(),
+            static_cast<float>(endNs - startNs) / kNsPerMs);
+    }
+
+private:
+    const static int64_t kNsPerSec = 1000000000;
+    const static int64_t kNsPerMs = 1000000;
+    const static clockid_t kClockId = CLOCK_BOOTTIME;
+
+    std::string mName;
+    struct timespec mStartTime;
+    bool mInvalid;
+
+};
+
+/**
+ * ScopeTimerLogger provides a timer to log the duration of the instance lifetime.
+ */
+class ScopeTimerLogger {
+public:
+    ScopeTimerLogger(const char *name) : mTimerLogger(name) { mTimerLogger.start(); };
+    virtual ~ScopeTimerLogger() { mTimerLogger.end(); };
+private:
+    TimerLogger mTimerLogger;
+};
+
+} // namespace pbcamera
+
+#endif // !ENABLE_HDRPLUS_PROFILER
+
+#endif // HDR_PLUS_PROFILER_H