[libcamera-devel,v3,04/11] libcamera: ipu3: cio2: Return the FrameBuffer pointer used
diff mbox series

Message ID 20210204162943.268517-5-niklas.soderlund@ragnatech.se
State Superseded
Headers show
Series
  • libcamera: ipu3: Attach to an skeleton IPA
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Commit Message

Niklas Söderlund Feb. 4, 2021, 4:29 p.m. UTC
When adding IPA plumbing to the IPU3 pipeline handler it will be needed
to track which raw buffer was queued to the CIO2 for a specific request.
Currently if using an internally allocated raw buffer the FrameBuffer is
not exposed outside the CIO2Device as it was not needed. Prepare for the
IPA by exposing which internal raw buffer is picked for each request,
later changes will associate this with a Request.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
* Changes since v1
- Update commit message.
---
 src/libcamera/pipeline/ipu3/cio2.cpp | 10 +++++++---
 src/libcamera/pipeline/ipu3/cio2.h   |  2 +-
 src/libcamera/pipeline/ipu3/ipu3.cpp |  8 ++++----
 3 files changed, 12 insertions(+), 8 deletions(-)

Patch
diff mbox series

diff --git a/src/libcamera/pipeline/ipu3/cio2.cpp b/src/libcamera/pipeline/ipu3/cio2.cpp
index 72e88067f55f29c6..c7fabb98cd6b3438 100644
--- a/src/libcamera/pipeline/ipu3/cio2.cpp
+++ b/src/libcamera/pipeline/ipu3/cio2.cpp
@@ -253,7 +253,7 @@  int CIO2Device::stop()
 	return ret;
 }
 
-int CIO2Device::queueBuffer(Request *request, FrameBuffer *rawBuffer)
+FrameBuffer *CIO2Device::queueBuffer(Request *request, FrameBuffer *rawBuffer)
 {
 	FrameBuffer *buffer = rawBuffer;
 
@@ -261,7 +261,7 @@  int CIO2Device::queueBuffer(Request *request, FrameBuffer *rawBuffer)
 	if (!buffer) {
 		if (availableBuffers_.empty()) {
 			LOG(IPU3, Error) << "CIO2 buffer underrun";
-			return -EINVAL;
+			return nullptr;
 		}
 
 		buffer = availableBuffers_.front();
@@ -270,7 +270,11 @@  int CIO2Device::queueBuffer(Request *request, FrameBuffer *rawBuffer)
 
 	buffer->setRequest(request);
 
-	return output_->queueBuffer(buffer);
+	int ret = output_->queueBuffer(buffer);
+	if (ret)
+		return nullptr;
+
+	return buffer;
 }
 
 void CIO2Device::tryReturnBuffer(FrameBuffer *buffer)
diff --git a/src/libcamera/pipeline/ipu3/cio2.h b/src/libcamera/pipeline/ipu3/cio2.h
index 236ad287354a0bf6..dca4d40e4c32e8b2 100644
--- a/src/libcamera/pipeline/ipu3/cio2.h
+++ b/src/libcamera/pipeline/ipu3/cio2.h
@@ -51,7 +51,7 @@  public:
 	CameraSensor *sensor() { return sensor_.get(); }
 	const CameraSensor *sensor() const { return sensor_.get(); }
 
-	int queueBuffer(Request *request, FrameBuffer *rawBuffer);
+	FrameBuffer *queueBuffer(Request *request, FrameBuffer *rawBuffer);
 	void tryReturnBuffer(FrameBuffer *buffer);
 	Signal<FrameBuffer *> &bufferReady() { return output_->bufferReady; }
 
diff --git a/src/libcamera/pipeline/ipu3/ipu3.cpp b/src/libcamera/pipeline/ipu3/ipu3.cpp
index 23845ff3dee5f8b0..184986fc648b541a 100644
--- a/src/libcamera/pipeline/ipu3/ipu3.cpp
+++ b/src/libcamera/pipeline/ipu3/ipu3.cpp
@@ -646,10 +646,10 @@  int PipelineHandlerIPU3::queueRequestDevice(Camera *camera, Request *request)
 	 * Queue a buffer on the CIO2, using the raw stream buffer provided in
 	 * the request, if any, or a CIO2 internal buffer otherwise.
 	 */
-	FrameBuffer *rawBuffer = request->findBuffer(&data->rawStream_);
-	error = data->cio2_.queueBuffer(request, rawBuffer);
-	if (error)
-		return error;
+	FrameBuffer *reqRawBuffer = request->findBuffer(&data->rawStream_);
+	FrameBuffer *rawBuffer = data->cio2_.queueBuffer(request, reqRawBuffer);
+	if (!rawBuffer)
+		return -ENOMEM;
 
 	/* Queue all buffers from the request aimed for the ImgU. */
 	for (auto it : request->buffers()) {