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authorChristophe Thommeret <hftom@free.fr>2008-10-15 20:01:32 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-17 17:29:46 -0300
commit745632147d54cd4db6812045351510ebd3981a24 (patch)
treecc1e0d8dada7b2ce4bad2851c3ffea320bd61322 /include/media
parent430189da042f8cc3305b8fbbce18ea103501fb90 (diff)
V4L/DVB (9270): cx24116: optimise emulated auto-pilot
Christophe divulged the following: "Since 8PSK (and higher mod) signals are very likely to have pilot symbols, pilot_auto should start with pilot_on for 8PSK. And since QPSK signals are unlikely to have pilot, pilot_auto should start with pilot_off for QPSK. Without the patch: QPSK tuning delay: ~100ms 8PSK tuning delay: ~900ms with patch: QPSK tuning delay: ~100ms 8PSK tuning delay: ~100ms " This patch does as Cristophe asks. In emulated auto-pilot we choose pilot-on for tuning PSK_8 and pilot-off for tuning QPSK. Signed-off-by: Darron Broad <darron@kewl.org> Signed-off-by: Steven Toth <stoth@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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