DNI: Measure FPS between frames

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/ipu3.cpp b/ipu3.cpp
index 4fce647..96744c8 100644
--- a/ipu3.cpp
+++ b/ipu3.cpp
@@ -81,6 +81,8 @@ private:
 	BinaryData aiqb_;
 	BinaryData nvm_;
 	BinaryData aiqd_;
+
+	uint64_t lastFrameTimestamp_;
 };
 
 int IPAIPU3::init(const IPASettings &settings)
@@ -319,6 +321,12 @@ void IPAIPU3::parseStatistics(unsigned int frame,
 				(sensorInfo_.pixelRate / 1e6);
 	ctrls.set(controls::FrameDuration, frameDuration);
 
+	double fps = frameTimestamp - lastFrameTimestamp_;
+	fps = lastFrameTimestamp_ != 0 && fps ? 1000000000.0 / fps : 0.0;
+	lastFrameTimestamp_ = frameTimestamp;
+
+	LOG(IPAIPU3, Info) << "Frame " << frame << ": fps " << fps;
+
 	IPU3Action op;
 	op.op = ActionMetadataReady;
 	op.controls = ctrls;