Send signal when recording images with Camera Block #107
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It does so if images are being saved, no processing is being performed, and at least one output Link is defined.
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This was referenced Feb 28, 2024
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Since Crappy
2.0.0, theCameraBlock never outputs messages to downstream Blocks. That is because the acquisition, display, and recording of the images are all managed from within theCameraBlock. However, as pointed out in #98, there is currently no way for other Blocks to know when an image is saved. This feature could be useful when performing image analysis in post-processing, in case actions need to be performed during the test, to synchronize with the timestamps of the saved images.With this PR, the
CameraBlock now sends messages containing the timestamp and metadata of each recorded image. It does so in case all these conditions are true:CameraBlock has at least one output LinkThe timestamp and metadata are respectively sent over the labels
't(s)'and'meta'. A new example was added to demonstrate the new behavior, and the documentation was updated.