[libcamera-devel] [PATCH 06/10] libcamera: ipu3: Implement buffer release

[Jacopo Mondi]

Release buffers on all video devices in the pipeline.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/libcamera/pipeline/ipu3/ipu3.cpp | 40 +++++++++++++++++++++++++---
 1 file changed, 36 insertions(+), 4 deletions(-)

diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index c7b7973952a0..60a48859b398 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -145,6 +145,8 @@ private:
 	int initCio2(unsigned int index, Cio2Device *cio2);
 	void registerCameras();
 
+	int releaseBuffers(V4L2Device *dev);
+
 	ImguDevice imgu0_;
 	ImguDevice imgu1_;
 
@@ -371,13 +373,32 @@ error_reserve_memory:
 int PipelineHandlerIPU3::freeBuffers(Camera *camera, Stream *stream)
 {
 	IPU3CameraData *data = cameraData(camera);
+	V4L2Device *viewfinder = data->imgu->viewfinder;
+	V4L2Device *output = data->imgu->output;
+	V4L2Device *input = data->imgu->input;
 	V4L2Device *cio2 = data->cio2.output;
+	V4L2Device *stat = data->imgu->stat;
+	int ret;
 
-	int ret = cio2->releaseBuffers();
-	if (ret) {
-		LOG(IPU3, Error) << "Failed to release memory";
+	ret = releaseBuffers(viewfinder);
+	if (ret)
+		return ret;
+
+	ret = releaseBuffers(stat);
+	if (ret)
+		return ret;
+
+	ret = releaseBuffers(output);
+	if (ret)
+		return ret;
+
+	ret = releaseBuffers(cio2);
+	if (ret)
+		return ret;
+
+	ret = releaseBuffers(input);
+	if (ret)
 		return ret;
-	}
 
 	return 0;
 }
@@ -877,6 +898,17 @@ void PipelineHandlerIPU3::registerCameras()
 	}
 }
 
+int PipelineHandlerIPU3::releaseBuffers(V4L2Device *dev)
+{
+	int ret = dev->releaseBuffers();
+	if (ret) {
+		LOG(IPU3, Error) << "Failed to release memory";
+		return ret;
+	}
+
+	return 0;
+}
+
 REGISTER_PIPELINE_HANDLER(PipelineHandlerIPU3);
 
 } /* namespace libcamera */
-- 
2.20.1