[PATCH 08/19] libcamera: software_isp: Track and pass frame ids

[Milan Zamazal]

A previous preparation patch implemented passing frame ids to stats
processing but without actual meaningful frame id value passed there.
This patch extends that by actually providing the frame id and passing
it through to the stats processor.

The frame id is taken from the request sequence number, the same as in
hardware pipelines.
Dear reviewers: I'm confused even after looking at commit
6084217cd3b52ba5677e3ca2de0e21008fdaa735.  What's the relationship
between requests, buffers and frames?  It's not 1:1:1 or is it?  Could
you please provide some explanation that could be put here?

Signed-off-by: Milan Zamazal <mzamazal at redhat.com>
---
 include/libcamera/internal/software_isp/software_isp.h |  4 ++--
 src/libcamera/pipeline/simple/simple.cpp               |  2 +-
 src/libcamera/software_isp/debayer.h                   |  2 +-
 src/libcamera/software_isp/debayer_cpu.cpp             |  9 ++++-----
 src/libcamera/software_isp/debayer_cpu.h               |  2 +-
 src/libcamera/software_isp/software_isp.cpp            | 10 ++++++----
 6 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/include/libcamera/internal/software_isp/software_isp.h b/include/libcamera/internal/software_isp/software_isp.h
index 6a03b17f..7365b49a 100644
--- a/include/libcamera/internal/software_isp/software_isp.h
+++ b/include/libcamera/internal/software_isp/software_isp.h
@@ -72,10 +72,10 @@ public:
 	int start();
 	void stop();
 
-	int queueBuffers(FrameBuffer *input,
+	int queueBuffers(uint32_t frame, FrameBuffer *input,
 			 const std::map<unsigned int, FrameBuffer *> &outputs);
 
-	void process(FrameBuffer *input, FrameBuffer *output);
+	void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output);
 
 	Signal<FrameBuffer *> inputBufferReady;
 	Signal<FrameBuffer *> outputBufferReady;
diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp
index b1bf0d16..5cca94c3 100644
--- a/src/libcamera/pipeline/simple/simple.cpp
+++ b/src/libcamera/pipeline/simple/simple.cpp
@@ -864,7 +864,7 @@ void SimpleCameraData::bufferReady(FrameBuffer *buffer)
 		if (converter_)
 			converter_->queueBuffers(buffer, conversionQueue_.front());
 		else
-			swIsp_->queueBuffers(buffer, conversionQueue_.front());
+			swIsp_->queueBuffers(request->sequence(), buffer, conversionQueue_.front());
 
 		conversionQueue_.pop();
 		return;
diff --git a/src/libcamera/software_isp/debayer.h b/src/libcamera/software_isp/debayer.h
index c151fe5d..d7ca060d 100644
--- a/src/libcamera/software_isp/debayer.h
+++ b/src/libcamera/software_isp/debayer.h
@@ -40,7 +40,7 @@ public:
 	virtual std::tuple<unsigned int, unsigned int>
 	strideAndFrameSize(const PixelFormat &outputFormat, const Size &size) = 0;
 
-	virtual void process(FrameBuffer *input, FrameBuffer *output, DebayerParams params) = 0;
+	virtual void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, DebayerParams params) = 0;
 
 	virtual SizeRange sizes(PixelFormat inputFormat, const Size &inputSize) = 0;
 
diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp
index 1575cedb..c75b8967 100644
--- a/src/libcamera/software_isp/debayer_cpu.cpp
+++ b/src/libcamera/software_isp/debayer_cpu.cpp
@@ -731,7 +731,7 @@ static inline int64_t timeDiff(timespec &after, timespec &before)
 	       (int64_t)after.tv_nsec - (int64_t)before.tv_nsec;
 }
 
-void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams params)
+void DebayerCpu::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, DebayerParams params)
 {
 	timespec frameStartTime;
 
@@ -785,12 +785,11 @@ void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams
 	}
 
 	/*
-	 * Frame and buffer ids are currently not used, so pass zeros as parameters.
+	 * Buffer ids are currently not used, so pass zeros as its parameter.
 	 *
-	 * \todo Pass real values once frame is passed here and stats buffer passing
-	 * is changed.
+	 * \todo Pass real bufferId once stats buffer passing is changed.
 	 */
-	stats_->finishFrame(0, 0);
+	stats_->finishFrame(frame, 0);
 	outputBufferReady.emit(output);
 	inputBufferReady.emit(input);
 }
diff --git a/src/libcamera/software_isp/debayer_cpu.h b/src/libcamera/software_isp/debayer_cpu.h
index 1dac6435..6a9cb4c7 100644
--- a/src/libcamera/software_isp/debayer_cpu.h
+++ b/src/libcamera/software_isp/debayer_cpu.h
@@ -36,7 +36,7 @@ public:
 	std::vector<PixelFormat> formats(PixelFormat input);
 	std::tuple<unsigned int, unsigned int>
 	strideAndFrameSize(const PixelFormat &outputFormat, const Size &size);
-	void process(FrameBuffer *input, FrameBuffer *output, DebayerParams params);
+	void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, DebayerParams params);
 	SizeRange sizes(PixelFormat inputFormat, const Size &inputSize);
 
 	/**
diff --git a/src/libcamera/software_isp/software_isp.cpp b/src/libcamera/software_isp/software_isp.cpp
index 3fc4a64b..aa60fb5f 100644
--- a/src/libcamera/software_isp/software_isp.cpp
+++ b/src/libcamera/software_isp/software_isp.cpp
@@ -279,12 +279,13 @@ int SoftwareIsp::exportBuffers(unsigned int output, unsigned int count,
 
 /**
  * \brief Queue buffers to Software ISP
+ * \param[in] frame The frame number
  * \param[in] input The input framebuffer
  * \param[in] outputs The container holding the output stream indexes and
  * their respective frame buffer outputs
  * \return 0 on success, a negative errno on failure
  */
-int SoftwareIsp::queueBuffers(FrameBuffer *input,
+int SoftwareIsp::queueBuffers(uint32_t frame, FrameBuffer *input,
 			      const std::map<unsigned int, FrameBuffer *> &outputs)
 {
 	unsigned int mask = 0;
@@ -308,7 +309,7 @@ int SoftwareIsp::queueBuffers(FrameBuffer *input,
 		mask |= 1 << index;
 	}
 
-	process(input, outputs.at(0));
+	process(frame, input, outputs.at(0));
 
 	return 0;
 }
@@ -340,13 +341,14 @@ void SoftwareIsp::stop()
 
 /**
  * \brief Passes the input framebuffer to the ISP worker to process
+ * \param[in] frame The frame number
  * \param[in] input The input framebuffer
  * \param[out] output The framebuffer to write the processed frame to
  */
-void SoftwareIsp::process(FrameBuffer *input, FrameBuffer *output)
+void SoftwareIsp::process(uint32_t frame, FrameBuffer *input, FrameBuffer *output)
 {
 	debayer_->invokeMethod(&DebayerCpu::process,
-			       ConnectionTypeQueued, input, output, debayerParams_);
+			       ConnectionTypeQueued, frame, input, output, debayerParams_);
 }
 
 void SoftwareIsp::saveIspParams()
-- 
2.44.1