diff options
Diffstat (limited to 'src/libcamera/v4l2_videodevice.cpp')
| -rw-r--r-- | src/libcamera/v4l2_videodevice.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp index 5580269f..95b9c38b 100644 --- a/src/libcamera/v4l2_videodevice.cpp +++ b/src/libcamera/v4l2_videodevice.cpp @@ -1600,6 +1600,14 @@ int V4L2VideoDevice::queueBuffer(FrameBuffer *buffer) buf.length = planes[0].length; } + /* + * Timestamps are to be supplied if the device is a mem-to-mem + * device. The drivers will have V4L2_BUF_FLAG_TIMESTAMP_COPY + * set hence these timestamps will be copied from the output + * buffers to capture buffers. If the device is not mem-to-mem, + * there is no harm in setting the timestamps as they will be + * ignored (and over-written). + */ buf.timestamp.tv_sec = metadata.timestamp / 1000000000; buf.timestamp.tv_usec = (metadata.timestamp / 1000) % 1000000; } |