From cbc2be34ed9e47f5b17d0955bf3496d735359795 Mon Sep 17 00:00:00 2001 From: Christian Rauch Date: Sat, 3 Sep 2022 23:33:29 +0200 Subject: 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 Tested-by: Paul Elder Reviewed-by: Paul Elder Reviewed-by: Umang Jain Signed-off-by: Paul Elder --- src/libcamera/control_serializer.cpp | 28 +++++++++++++--------------- 1 file changed, 13 insertions(+), 15 deletions(-) (limited to 'src') 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(ByteStreamBuffer & } /* Create and store the ControlInfo. */ - ctrls.emplace(controlId, loadControlInfo(type, values)); + ctrls.emplace(controlId, loadControlInfo(values)); } /* @@ -624,10 +624,8 @@ ControlList ControlSerializer::deserialize(ByteStreamBuffer &buffer return {}; } - ControlType type = static_cast(entry->type); ctrls.set(entry->id, - loadControlValue(type, values, entry->is_array, - entry->count)); + loadControlValue(values, entry->is_array, entry->count)); } return ctrls; -- cgit v1.2.1