From 10bcc51ca365ba9b40f7af192884b73542cf701a Mon Sep 17 00:00:00 2001 From: David Plowman Date: Tue, 8 Dec 2020 20:44:36 +0000 Subject: libcamera: pipeline: raspberrypi: Pass the drop frame count in start, not configure The number of frames to drop (not display) is passed back now from the start method, not configure. This means applications have a chance to set fixed exposure/gain before starting the camera and this can affect the frame drop count that is returned. Note how we need to be able to tell the very first time we start the camera from subsequent restarts, hence addition of the "firstStart_" flag. Both the IPA implementation file and the pipeline handler need matching modifications. Signed-off-by: David Plowman Reviewed-by: Naushir Patuck Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- src/ipa/raspberrypi/raspberrypi.cpp | 45 ++++++++++++++++++++----------------- 1 file changed, 25 insertions(+), 20 deletions(-) (limited to 'src/ipa') diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp index 60cfdc27..8acab85e 100644 --- a/src/ipa/raspberrypi/raspberrypi.cpp +++ b/src/ipa/raspberrypi/raspberrypi.cpp @@ -67,7 +67,7 @@ public: IPARPi() : lastMode_({}), controller_(), controllerInit_(false), frameCount_(0), checkCount_(0), mistrustCount_(0), - lsTable_(nullptr) + lsTable_(nullptr), firstStart_(true) { } @@ -145,6 +145,9 @@ private: /* LS table allocation passed in from the pipeline handler. */ FileDescriptor lsTableHandle_; void *lsTable_; + + /* Distinguish the first camera start from others. */ + bool firstStart_; }; int IPARPi::init(const IPASettings &settings) @@ -180,6 +183,27 @@ int IPARPi::start(const IPAOperationData &data, IPAOperationData *result) result->operation |= RPi::IPA_CONFIG_SENSOR; } + /* + * Initialise frame counts, and decide how many frames must be hidden or + * "mistrusted", which depends on whether this is a startup from cold, + * or merely a mode switch in a running system. + */ + frameCount_ = 0; + checkCount_ = 0; + unsigned int dropFrame = 0; + if (firstStart_) { + dropFrame = helper_->HideFramesStartup(); + mistrustCount_ = helper_->MistrustFramesStartup(); + } else { + dropFrame = helper_->HideFramesModeSwitch(); + mistrustCount_ = helper_->MistrustFramesModeSwitch(); + } + + result->data.push_back(dropFrame); + result->operation |= RPi::IPA_CONFIG_DROP_FRAMES; + + firstStart_ = false; + return 0; } @@ -305,25 +329,6 @@ void IPARPi::configure(const CameraSensorInfo &sensorInfo, /* Pass the camera mode to the CamHelper to setup algorithms. */ helper_->SetCameraMode(mode_); - /* - * Initialise frame counts, and decide how many frames must be hidden or - *"mistrusted", which depends on whether this is a startup from cold, - * or merely a mode switch in a running system. - */ - frameCount_ = 0; - checkCount_ = 0; - unsigned int dropFrame = 0; - if (controllerInit_) { - dropFrame = helper_->HideFramesModeSwitch(); - mistrustCount_ = helper_->MistrustFramesModeSwitch(); - } else { - dropFrame = helper_->HideFramesStartup(); - mistrustCount_ = helper_->MistrustFramesStartup(); - } - - result->data.push_back(dropFrame); - result->operation |= RPi::IPA_CONFIG_DROP_FRAMES; - if (!controllerInit_) { /* Load the tuning file for this sensor. */ controller_.Read(tuningFile_.c_str()); -- cgit v1.2.1