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authorChristian Rauch <Rauch.Christian@gmx.de>2022-09-03 23:33:29 +0200
committerPaul Elder <paul.elder@ideasonboard.com>2022-09-12 18:28:59 +0900
commitcbc2be34ed9e47f5b17d0955bf3496d735359795 (patch)
treec21bdfa1c40dc8cbcfdff6506df6c90234099ae1 /src/libcamera
parent560ceb1ea854b1cb0c7d91efffa0e7aabbed2328 (diff)
libcamera: control_serializer: store/load all ControlValue types
The min/max/def ControlValue of a ControlInfo can take arbitrary types that are different from each other and different from the ControlId type. The serialiser serialises these ControlValue separately by their type but does not store the type. The deserialiser assumes that ControlValue types match the ControlId type. If this is not the case, deserialisation will try to deserialise values of the wrong type. Fix this by serialising each of the min/max/def ControlValue's ControlType and storing it just before the serialised ControlValue. Fixes: https://bugs.libcamera.org/show_bug.cgi?id=137 Signed-off-by: Christian Rauch <Rauch.Christian@gmx.de> Tested-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Diffstat (limited to 'src/libcamera')
-rw-r--r--src/libcamera/control_serializer.cpp28
1 files changed, 13 insertions, 15 deletions
diff --git a/src/libcamera/control_serializer.cpp b/src/libcamera/control_serializer.cpp
index e87d2362..0cf719bd 100644
--- a/src/libcamera/control_serializer.cpp
+++ b/src/libcamera/control_serializer.cpp
@@ -144,7 +144,7 @@ void ControlSerializer::reset()
size_t ControlSerializer::binarySize(const ControlValue &value)
{
- return value.data().size_bytes();
+ return sizeof(ControlType) + value.data().size_bytes();
}
size_t ControlSerializer::binarySize(const ControlInfo &info)
@@ -195,6 +195,8 @@ size_t ControlSerializer::binarySize(const ControlList &list)
void ControlSerializer::store(const ControlValue &value,
ByteStreamBuffer &buffer)
{
+ const ControlType type = value.type();
+ buffer.write(&type);
buffer.write(value.data());
}
@@ -379,11 +381,13 @@ int ControlSerializer::serialize(const ControlList &list,
return 0;
}
-ControlValue ControlSerializer::loadControlValue(ControlType type,
- ByteStreamBuffer &buffer,
+ControlValue ControlSerializer::loadControlValue(ByteStreamBuffer &buffer,
bool isArray,
unsigned int count)
{
+ ControlType type;
+ buffer.read(&type);
+
ControlValue value;
value.reserve(type, isArray, count);
@@ -392,15 +396,11 @@ ControlValue ControlSerializer::loadControlValue(ControlType type,
return value;
}
-ControlInfo ControlSerializer::loadControlInfo(ControlType type,
- ByteStreamBuffer &b)
+ControlInfo ControlSerializer::loadControlInfo(ByteStreamBuffer &b)
{
- if (type == ControlTypeString)
- type = ControlTypeInteger32;
-
- ControlValue min = loadControlValue(type, b);
- ControlValue max = loadControlValue(type, b);
- ControlValue def = loadControlValue(type, b);
+ ControlValue min = loadControlValue(b);
+ ControlValue max = loadControlValue(b);
+ ControlValue def = loadControlValue(b);
return ControlInfo(min, max, def);
}
@@ -513,7 +513,7 @@ ControlInfoMap ControlSerializer::deserialize<ControlInfoMap>(ByteStreamBuffer &
}
/* Create and store the ControlInfo. */
- ctrls.emplace(controlId, loadControlInfo(type, values));
+ ctrls.emplace(controlId, loadControlInfo(values));
}
/*
@@ -624,10 +624,8 @@ ControlList ControlSerializer::deserialize<ControlList>(ByteStreamBuffer &buffer
return {};
}
- ControlType type = static_cast<ControlType>(entry->type);
ctrls.set(entry->id,
- loadControlValue(type, values, entry->is_array,
- entry->count));
+ loadControlValue(values, entry->is_array, entry->count));
}
return ctrls;

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