From 7fde7c7aeb1e0a993cca479009feb7f487a998c7 Mon Sep 17 00:00:00 2001 From: Jacopo Mondi Date: Wed, 1 Sep 2021 11:10:11 +0200 Subject: ipa: proxy_worker: Reset ControlSerializer on worker When running the IPA in isolated mode, each side of the IPC boundary has an instance of the ControlSerializer class which is used to serializer/deserialize controls before transmitting them on the wire. The IPAProxyWorker, which creates and manages the process the IPA runs in, does not reset its ControlSerializer upon an IPA::configure() call, while the IPAProxy does, effectively creating a misalignment between the two sides of the fence. This obviously creates issues as one side of the IPC runs with a populated and possibly stale cache of ControlInfoMap references, while the other side gets reset every time a new configuration is applied to the Camera. Fix that by resetting the IPAProxyWorker ControlSerializer on an IPA configure() call. This change fixes an issue which is easily triggered by running two consecutive capture sessions with the IPA running in isolated mode: ERROR Serializer control_serializer.cpp:520 Can't deserialize ControlList: unknown ControlInfoMap Fixes: 7832e19a599e ("utils: ipc: add templates for code generation for IPC mechanism") Signed-off-by: Jacopo Mondi Reviewed-by: Umang Jain Reviewed-by: Paul Elder Reviewed-by: Laurent Pinchart Reviewed-by: Kieran Bingham --- .../generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl | 3 +++ 1 file changed, 3 insertions(+) diff --git a/utils/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl b/utils/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl index c306d8df..890246a8 100644 --- a/utils/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl +++ b/utils/ipc/generators/libcamera_templates/module_ipa_proxy_worker.cpp.tmpl @@ -79,6 +79,9 @@ public: {% for method in interface_main.methods %} case {{cmd_enum_name}}::{{method.mojom_name|cap}}: { +{%- if method.mojom_name == "configure" %} + controlSerializer_.reset(); +{%- endif %} {{proxy_funcs.deserialize_call(method|method_param_inputs, '_ipcMessage.data()', '_ipcMessage.fds()', false, true)|indent(16, true)}} {% for param in method|method_param_outputs %} {{param|name}} {{param.mojom_name}}; -- cgit v1.2.1