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Subject: edid-decode: fix incorrect voltage level
Author: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Date: Fri Feb 18 17:12:14 2022 +0100
Signal Level Standard reported 0.7/0.7 instead of 0.7/0.0 V.
Also reworked this section to better match the terminlogy from the
EDID standard.
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
Reported-by: Morten Leikvoll <leikv...@cyviz.com>
parse-base-block.cpp | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/parse-base-block.cpp b/parse-base-block.cpp
index 048308b8701f..c8fcfeb63126 100644
--- a/parse-base-block.cpp
+++ b/parse-base-block.cpp
@@ -1414,16 +1414,18 @@ void edid_state::parse_base_block(const unsigned char
*x)
fail("Digital Video Interface Standard set to reserved
value 0x%02x.\n", x[0x14] & 0x7f);
}
} else {
+ static const char * const voltages[] = {
+ "0.700 : 0.300 : 1.000 V p-p",
+ "0.714 : 0.286 : 1.000 V p-p",
+ "1.000 : 0.400 : 1.400 V p-p",
+ "0.700 : 0.000 : 0.700 V p-p"
+ };
unsigned voltage = (x[0x14] & 0x60) >> 5;
unsigned sync = (x[0x14] & 0x0f);
analog = 1;
printf(" Analog display\n");
- printf(" Input voltage level: %s V\n",
- voltage == 3 ? "0.7/0.7" :
- voltage == 2 ? "1.0/0.4" :
- voltage == 1 ? "0.714/0.286" :
- "0.7/0.3");
+ printf(" Signal Level Standard: %s\n", voltages[voltage]);
if (x[0x14] & 0x10)
printf(" Blank-to-black setup/pedestal\n");
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