libcamera: pipeline: Remove explicit buffer handling

With the FrameBuffer interface in place there is no need for the Camera
to call into the specific pipelines allocation and freeing of buffers as
it no longer needs to be synchronized with buffer allocation by the
application.

Remove the function prototypes in the pipeline handler base class and
fold the functionality in the pipelines start() and stop() functions
where needed. A follow up patch will remove the now no-op
Camera::allocateBuffers() and Camera::freeBuffers().

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 1 insertions, 7 deletions

diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
index 3fe40feb..f3a7578d 100644
--- a/src/libcamera/camera.cpp
+++ b/src/libcamera/camera.cpp
@@ -726,12 +726,6 @@ int Camera::allocateBuffers()
 		return -EINVAL;
 	}
 
-	int ret = pipe_->allocateBuffers(this, activeStreams_);
-	if (ret) {
-		LOG(Camera, Error) << "Failed to allocate buffers";
-		return ret;
-	}
-
 	state_ = CameraPrepared;
 
 	return 0;
@@ -752,7 +746,7 @@ int Camera::freeBuffers()
 
 	state_ = CameraConfigured;
 
-	return pipe_->freeBuffers(this, activeStreams_);
+	return 0;
 }
 
 /**