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Diffstat (limited to 'src/v4l2')
-rw-r--r--src/v4l2/v4l2_camera_proxy.cpp10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp
index d0a12bc3..7579d93b 100644
--- a/src/v4l2/v4l2_camera_proxy.cpp
+++ b/src/v4l2/v4l2_camera_proxy.cpp
@@ -565,6 +565,9 @@ int V4L2CameraProxy::vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg)
if (arg->index >= bufferCount_)
return -EINVAL;
+ if (buffers_[arg->index].flags & V4L2_BUF_FLAG_QUEUED)
+ return -EINVAL;
+
if (!hasOwnership(file))
return -EBUSY;
@@ -577,8 +580,9 @@ int V4L2CameraProxy::vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg)
if (ret < 0)
return ret;
- arg->flags |= V4L2_BUF_FLAG_QUEUED;
- arg->flags &= ~V4L2_BUF_FLAG_DONE;
+ buffers_[arg->index].flags |= V4L2_BUF_FLAG_QUEUED;
+
+ arg->flags = buffers_[arg->index].flags;
return ret;
}
@@ -616,7 +620,7 @@ int V4L2CameraProxy::vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg)
struct v4l2_buffer &buf = buffers_[currentBuf_];
- buf.flags &= ~V4L2_BUF_FLAG_QUEUED;
+ buf.flags &= ~(V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE);
buf.length = sizeimage_;
*arg = buf;