From 66df26f7aa655c31a876c3f9baa4389a583b776e Mon Sep 17 00:00:00 2001 From: Jacopo Mondi Date: Wed, 16 Oct 2024 16:00:13 +0200 Subject: libipa: FCQueue: Make sure FrameContext#0 is initialized Some IPA modules, like the RkISP1 one, call FCQueue::get(0) at IPA::start() time, before any frame context has been allocated with FCQueue::alloc() called at queueRequest() time. The FCQueue implementation aims to detect when a FrameContext is get() before it is alloc()-ated, Warns about it, and initializes the FrameContext before returning it. In case of frame#0, a get() preceding an alloc() call is not detected as the "frame == frameContext.frame" test returns success, as FrameContexts are zeroed by default. As a result, the first returned FrameContext is not initialized. Explicitly test for frame#0 to make sure the FrameContext is initialized if get(0) is called before alloc(0). To avoid re-initializing a frame context, in case alloc() has been called correctly before get(), introduce an "initialised" state variable that tracks the FrameContext initialisation state. Signed-off-by: Jacopo Mondi --- src/ipa/libipa/fc_queue.h | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/src/ipa/libipa/fc_queue.h b/src/ipa/libipa/fc_queue.h index b1e8bc14..bfcce5a8 100644 --- a/src/ipa/libipa/fc_queue.h +++ b/src/ipa/libipa/fc_queue.h @@ -26,11 +26,13 @@ protected: virtual void init(const uint32_t frameNum) { frame = frameNum; + initialised = true; } private: template friend class FCQueue; uint32_t frame; + bool initialised = false; }; template @@ -44,8 +46,10 @@ public: void clear() { - for (FrameContext &ctx : contexts_) + for (FrameContext &ctx : contexts_) { + ctx.initialised = false; ctx.frame = 0; + } } FrameContext &alloc(const uint32_t frame) @@ -89,6 +93,21 @@ public: << " has been overwritten by " << frameContext.frame; + if (frame == 0 && !frameContext.initialised) { + /* + * If the IPA calls get() at start() time it will get an + * un-intialized FrameContext as the below "frame == + * frameContext.frame" check will return success because + * FrameContexts are zeroed at creation time. + * + * Make sure the FrameContext gets initialised if get() + * is called before alloc() by the IPA for frame#0. + */ + frameContext.init(frame); + + return frameContext; + } + if (frame == frameContext.frame) return frameContext; -- cgit v1.2.1