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Mon, 4 Mar 2024 10:21:41 +0000 From: Fang Hui To: libcamera-devel@lists.libcamera.org Subject: [PATCH] android: camera_device: Fix camera blocked issue when stopping capture Date: Mon, 4 Mar 2024 17:49:17 +0800 Message-Id: <20240304094917.1144992-1-hui.fang@nxp.com> X-Mailer: git-send-email 2.25.1 X-ClientProxiedBy: SG2PR02CA0008.apcprd02.prod.outlook.com (2603:1096:3:17::20) To DB9PR04MB9284.eurprd04.prod.outlook.com (2603:10a6:10:36c::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB9PR04MB9284:EE_|PAXPR04MB9090:EE_ X-MS-Office365-Filtering-Correlation-Id: 9bef80d5-c68e-405e-97a9-08dc3c34e22b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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In this case, no frame get from the device, the related capture request has been pushed to the queue descriptors_, but the queuedRequests_ was still empty due to no requests will be queue to the device since the stream will be stopped soon， so there will be no camera->requestComplete called later, then the descriptors_ can not pop normally, this will cause the pending if we want to start capture next time. To fix the issue, ensure the descriptors_ is empty after the camera device is stopped. Signed-off-by: Anle Pan --- src/android/camera_device.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp index 25cedd44..d452992d 100644 --- a/src/android/camera_device.cpp +++ b/src/android/camera_device.cpp @@ -433,8 +433,11 @@ void CameraDevice::flush() void CameraDevice::stop() { MutexLocker stateLock(stateMutex_); - if (state_ == State::Stopped) + if (state_ == State::Stopped) { + MutexLocker descriptorsLock(descriptorsMutex_); + descriptors_ = {}; return; + } camera_->stop();