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-rw-r--r--src/libcamera/v4l2_videodevice.cpp16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp
index 9b5807d3..009f6d55 100644
--- a/src/libcamera/v4l2_videodevice.cpp
+++ b/src/libcamera/v4l2_videodevice.cpp
@@ -202,6 +202,19 @@ V4L2BufferCache::~V4L2BufferCache()
}
/**
+ * \brief Check if all the entries in the cache are unused
+ */
+bool V4L2BufferCache::isEmpty() const
+{
+ for (auto const &entry : cache_) {
+ if (!entry.free_)
+ return false;
+ }
+
+ return true;
+}
+
+/**
* \brief Find the best V4L2 buffer for a FrameBuffer
* \param[in] buffer The FrameBuffer
*
@@ -1849,10 +1862,13 @@ int V4L2VideoDevice::streamOff()
for (auto it : queuedBuffers_) {
FrameBuffer *buffer = it.second;
+ cache_->put(it.first);
buffer->metadata_.status = FrameMetadata::FrameCancelled;
bufferReady.emit(buffer);
}
+ ASSERT(cache_->isEmpty());
+
queuedBuffers_.clear();
fdBufferNotifier_->setEnabled(false);
state_ = State::Stopped;