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-rw-r--r--src/v4l2/v4l2_camera_proxy.cpp12
1 files changed, 11 insertions, 1 deletions
diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp
index a0c6deea..cbe9e026 100644
--- a/src/v4l2/v4l2_camera_proxy.cpp
+++ b/src/v4l2/v4l2_camera_proxy.cpp
@@ -352,8 +352,18 @@ int V4L2CameraProxy::vidioc_reqbufs(struct v4l2_requestbuffers *arg)
return -EINVAL;
sizeimage_ = calculateSizeImage(streamConfig_);
+ /*
+ * If we return -EINVAL here then the application will think that we
+ * don't support streaming mmap. Since we don't support readwrite and
+ * userptr either, the application will get confused and think that
+ * we don't support anything.
+ * On the other hand, if a format has a zero sizeimage (eg. MJPEG),
+ * we'll get a floating point exception when we try to stream it.
+ */
if (sizeimage_ == 0)
- return -EINVAL;
+ LOG(V4L2Compat, Warning)
+ << "sizeimage of at least one format is zero. "
+ << "Streaming this format will cause a floating point exception.";
setFmtFromConfig(streamConfig_);