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34 lines
1.3 KiB
Plaintext
34 lines
1.3 KiB
Plaintext
NOTE: This is an unsupported hack so that legacy software works
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with the hardware!
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To properly pass data through a CI CAM you should read
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the TS from a dvr device and write it to a ci device
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in user space!
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Redirection of TS streams through CI modules is now supported
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through /sys/class/ddbridge/ddbridge0/redirect.
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It only works with cards based on the ddbridge PCIe bridge, not
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with nGene based cards.
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It is set up in such a way that you can write "AB CD" to
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a "redirect" attribute and data from input B of card A is then piped through
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port D (meaning TAB (D+1) which uses output D and input 2*D for CI io)
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of card C and then shows up in the demux device belonging to
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input B (input (B&1) of TAB (B/2+1)) of card A.
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E.g.:
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echo "00 01" > /sys/class/ddbridge/ddbridge0/redirect
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will pipe input 0 of card 0 through CI at port 1 (TAB 2) of card 0.
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Redirection should only be done right after loading the driver
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(or booting if the driver is built-in) and before using the
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devices in any way.
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adapter_alloc=3 is rcommended when using redirect
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The ci device will then show up in the same adapter directory and most
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software will then assume it belongs to the frontend in the same directory.
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Redirect between cards in different IOMMU groups will not work!
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Disable IOMMU if you have this problem. |