[libcamera-devel] [PATCH 04/13] libcamera: pipeline: rkisp1: Prepare buffer ready handlers for multiple streams

[Niklas Söderlund]

The buffer ready handlers are designed for a single application facing
stream from the main path. To prepare for multiple application facing
streams from main and/or self path the handlers need to be prepared.

The data keeping tasks of frame number and advancing the timeline can be
moved from the application facing buffer ready handler to the statistics
handler. For each request processed there will always be a statistic
buffer and as the ISP is inline and is the source of both main, self and
statistic paths there is no lose in precision from this.

The application facing handler no longer needs a special case for
cancelled frames and can be made simpler. With this change the handlers
are ready to deal with any combinations of application facing streams.

Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
---
 src/libcamera/pipeline/rkisp1/rkisp1.cpp | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 38382a6894dac22a..a1cda12d244f2d97 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -1074,20 +1074,8 @@ void PipelineHandlerRkISP1::tryCompleteRequest(Request *request)
 void PipelineHandlerRkISP1::bufferReady(FrameBuffer *buffer)
 {
 	ASSERT(activeCamera_);
-	RkISP1CameraData *data = cameraData(activeCamera_);
 	Request *request = buffer->request();
 
-	if (buffer->metadata().status == FrameMetadata::FrameCancelled) {
-		completeBuffer(activeCamera_, request, buffer);
-		completeRequest(activeCamera_, request);
-		return;
-	}
-
-	data->timeline_.bufferReady(buffer);
-
-	if (data->frame_ <= buffer->metadata().sequence)
-		data->frame_ = buffer->metadata().sequence + 1;
-
 	completeBuffer(activeCamera_, request, buffer);
 	tryCompleteRequest(request);
 }
@@ -1118,6 +1106,11 @@ void PipelineHandlerRkISP1::statReady(FrameBuffer *buffer)
 	if (!info)
 		return;
 
+	data->timeline_.bufferReady(buffer);
+
+	if (data->frame_ <= buffer->metadata().sequence)
+		data->frame_ = buffer->metadata().sequence + 1;
+
 	IPAOperationData op;
 	op.operation = RKISP1_IPA_EVENT_SIGNAL_STAT_BUFFER;
 	op.data = { info->frame, info->statBuffer->cookie() };
-- 
2.28.0