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CVBpy 15.0
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CVBpy 15.0
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Queryable stream information. More...
Inherits object.
Static Public Attributes | |
| int | IsCameraDetected = 8 |
| Returns whether a camera is currently detected. More... | |
| int | NumBuffersAcquired = 0 |
| The number of image buffers acquired since start of the last acquisition start. | |
| int | NumBuffersAnnounced = 18 |
| Second 'NumAcquired exclusive lost' omitted (too confusing with first one) More... | |
| int | NumBuffersBeingFilled = 19 |
| Number of buffer currently being filled by the acquisition engine. | |
| int | NumBuffersCorruptOnArrival = 12 |
| Count that contains erroneous image buffer acquisition. More... | |
| int | NumBuffersCorruptOnDelivery = 13 |
| Count that contains erroneous image buffers delivered via the stream's wait method. More... | |
| int | NumBuffersDelivered = 11 |
| Number of image buffers successfully returned by the stream's wait method. More... | |
| int | NumBuffersLocked = 3 |
| Number of images currently in locked state. | |
| int | NumBuffersLost = 14 |
| Count that incorporates all lost image buffers despite their reason. More... | |
| int | NumBuffersLostLocked = 2 |
| Count that only contains lost images due to ring buffer overflow. | |
| int | NumBuffersLostTransfer = 1 |
| Count that only contains lost images during transfer. | |
| int | NumBuffersPending = 4 |
| Number of images acquired, but not retrieved via the stream's wait method. | |
| int | NumBuffersQueued = 17 |
| Number of buffers available to be filled by the acquisition engine. More... | |
| int | NumPacketsReceived = 20 |
| For packet based protocols this contains the actual number of packets received (parts of a whole image buffer) | |
| int | NumResends = 21 |
| Number of resend requests sent since start of the last acquisition. | |
| int | NumTriggersLost = 7 |
| Returns how many trigger signals where ignored by the device due to for example over-triggering. | |
Queryable stream information.
All streams only provide a sub-set of the available queries. So always make sure, that the information is available, when switching devices / drivers.
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Returns whether a camera is currently detected.
The value is interpreted as a C boolean: everything except 0 is true.
This information depends on the camera / frame grabber technology. It can be the presence of a signal from for example a CameraLink camera or an active heartbeat signal from a GigE Vision device.
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Second 'NumAcquired exclusive lost' omitted (too confusing with first one)
Number of buffers used in the acquisition engine. This is the number of images in the ring buffer.
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Count that contains erroneous image buffer acquisition.
Packet resend can alleviate this problem and result in complete buffer to be delivered via the stream's wait method. But higher counts indicate a bad connection either due to transfer errors or to high throughput.
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Count that contains erroneous image buffers delivered via the stream's wait method.
This count can only increase if corrupt images are delivered from the driver (default is yes). This means that either packet resend is disabled or packet resend could not complete the image buffer.
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Number of image buffers successfully returned by the stream's wait method.
This counts both corrupt and complete image buffers. Corrupt images are only delivered if enabled by the driver (normally defaults to yes).
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Count that incorporates all lost image buffers despite their reason.
Can be transfer, corruption, or overflown ring buffer.
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Number of buffers available to be filled by the acquisition engine.
That is image buffers that are not locked.