diff options
| -rw-r--r-- | include/libcamera/internal/v4l2_videodevice.h | 1 | ||||
| -rw-r--r-- | src/libcamera/v4l2_videodevice.cpp | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/include/libcamera/internal/v4l2_videodevice.h b/include/libcamera/internal/v4l2_videodevice.h index d7a81e08..cfeae7bd 100644 --- a/include/libcamera/internal/v4l2_videodevice.h +++ b/include/libcamera/internal/v4l2_videodevice.h @@ -124,6 +124,7 @@ public: V4L2BufferCache(const std::vector<std::unique_ptr<FrameBuffer>> &buffers); ~V4L2BufferCache(); + bool isEmpty() const; int get(const FrameBuffer &buffer); void put(unsigned int index); 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; |