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Diffstat (limited to 'src/libcamera/ipa_data_serializer.cpp')
-rw-r--r--src/libcamera/ipa_data_serializer.cpp95
1 files changed, 51 insertions, 44 deletions
diff --git a/src/libcamera/ipa_data_serializer.cpp b/src/libcamera/ipa_data_serializer.cpp
index fb941e6b..5b183c70 100644
--- a/src/libcamera/ipa_data_serializer.cpp
+++ b/src/libcamera/ipa_data_serializer.cpp
@@ -7,6 +7,8 @@
#include "libcamera/internal/ipa_data_serializer.h"
+#include <unistd.h>
+
#include <libcamera/base/log.h>
/**
@@ -141,7 +143,7 @@ namespace {
/**
* \fn template<typename T> IPADataSerializer<T>::deserialize(
* const std::vector<uint8_t> &data,
- * const std::vector<int32_t> &fds,
+ * const std::vector<FileDescriptor> &fds,
* ControlSerializer *cs = nullptr)
* \brief Deserialize byte vector and fd vector into an object
* \tparam T Type of object to deserialize to
@@ -162,8 +164,8 @@ namespace {
* \fn template<typename T> IPADataSerializer::deserialize(
* std::vector<uint8_t>::const_iterator dataBegin,
* std::vector<uint8_t>::const_iterator dataEnd,
- * std::vector<int32_t>::const_iterator fdsBegin,
- * std::vector<int32_t>::const_iterator fdsEnd,
+ * std::vector<FileDescriptor>::const_iterator fdsBegin,
+ * std::vector<FileDescriptor>::const_iterator fdsEnd,
* ControlSerializer *cs = nullptr)
* \brief Deserialize byte vector and fd vector into an object
* \tparam T Type of object to deserialize to
@@ -187,7 +189,7 @@ namespace {
#define DEFINE_POD_SERIALIZER(type) \
\
template<> \
-std::tuple<std::vector<uint8_t>, std::vector<int32_t>> \
+std::tuple<std::vector<uint8_t>, std::vector<FileDescriptor>> \
IPADataSerializer<type>::serialize(const type &data, \
[[maybe_unused]] ControlSerializer *cs) \
{ \
@@ -215,7 +217,7 @@ type IPADataSerializer<type>::deserialize(const std::vector<uint8_t> &data, \
\
template<> \
type IPADataSerializer<type>::deserialize(const std::vector<uint8_t> &data, \
- [[maybe_unused]] const std::vector<int32_t> &fds, \
+ [[maybe_unused]] const std::vector<FileDescriptor> &fds, \
ControlSerializer *cs) \
{ \
return deserialize(data.cbegin(), data.end(), cs); \
@@ -224,8 +226,8 @@ type IPADataSerializer<type>::deserialize(const std::vector<uint8_t> &data, \
template<> \
type IPADataSerializer<type>::deserialize(std::vector<uint8_t>::const_iterator dataBegin, \
std::vector<uint8_t>::const_iterator dataEnd, \
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsBegin, \
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsEnd, \
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsBegin, \
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsEnd, \
ControlSerializer *cs) \
{ \
return deserialize(dataBegin, dataEnd, cs); \
@@ -249,7 +251,7 @@ DEFINE_POD_SERIALIZER(double)
* function parameter serdes).
*/
template<>
-std::tuple<std::vector<uint8_t>, std::vector<int32_t>>
+std::tuple<std::vector<uint8_t>, std::vector<FileDescriptor>>
IPADataSerializer<std::string>::serialize(const std::string &data,
[[maybe_unused]] ControlSerializer *cs)
{
@@ -276,7 +278,7 @@ IPADataSerializer<std::string>::deserialize(std::vector<uint8_t>::const_iterator
template<>
std::string
IPADataSerializer<std::string>::deserialize(const std::vector<uint8_t> &data,
- [[maybe_unused]] const std::vector<int32_t> &fds,
+ [[maybe_unused]] const std::vector<FileDescriptor> &fds,
[[maybe_unused]] ControlSerializer *cs)
{
return { data.cbegin(), data.cend() };
@@ -286,8 +288,8 @@ template<>
std::string
IPADataSerializer<std::string>::deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsBegin,
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsEnd,
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsBegin,
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsEnd,
[[maybe_unused]] ControlSerializer *cs)
{
return { dataBegin, dataEnd };
@@ -305,7 +307,7 @@ IPADataSerializer<std::string>::deserialize(std::vector<uint8_t>::const_iterator
* be used. The serialized ControlInfoMap will have zero length.
*/
template<>
-std::tuple<std::vector<uint8_t>, std::vector<int32_t>>
+std::tuple<std::vector<uint8_t>, std::vector<FileDescriptor>>
IPADataSerializer<ControlList>::serialize(const ControlList &data, ControlSerializer *cs)
{
if (!cs)
@@ -405,7 +407,7 @@ IPADataSerializer<ControlList>::deserialize(const std::vector<uint8_t> &data,
template<>
ControlList
IPADataSerializer<ControlList>::deserialize(const std::vector<uint8_t> &data,
- [[maybe_unused]] const std::vector<int32_t> &fds,
+ [[maybe_unused]] const std::vector<FileDescriptor> &fds,
ControlSerializer *cs)
{
return deserialize(data.cbegin(), data.end(), cs);
@@ -415,8 +417,8 @@ template<>
ControlList
IPADataSerializer<ControlList>::deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsBegin,
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsEnd,
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsBegin,
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsEnd,
ControlSerializer *cs)
{
return deserialize(dataBegin, dataEnd, cs);
@@ -429,7 +431,7 @@ IPADataSerializer<ControlList>::deserialize(std::vector<uint8_t>::const_iterator
* X bytes - Serialized ControlInfoMap (using ControlSerializer)
*/
template<>
-std::tuple<std::vector<uint8_t>, std::vector<int32_t>>
+std::tuple<std::vector<uint8_t>, std::vector<FileDescriptor>>
IPADataSerializer<ControlInfoMap>::serialize(const ControlInfoMap &map,
ControlSerializer *cs)
{
@@ -491,7 +493,7 @@ IPADataSerializer<ControlInfoMap>::deserialize(const std::vector<uint8_t> &data,
template<>
ControlInfoMap
IPADataSerializer<ControlInfoMap>::deserialize(const std::vector<uint8_t> &data,
- [[maybe_unused]] const std::vector<int32_t> &fds,
+ [[maybe_unused]] const std::vector<FileDescriptor> &fds,
ControlSerializer *cs)
{
return deserialize(data.cbegin(), data.end(), cs);
@@ -501,15 +503,15 @@ template<>
ControlInfoMap
IPADataSerializer<ControlInfoMap>::deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsBegin,
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsEnd,
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsBegin,
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsEnd,
ControlSerializer *cs)
{
return deserialize(dataBegin, dataEnd, cs);
}
/*
- * FileDescriptors are serialized into a single byte that tells if the
+ * FileDescriptors are serialized into four bytes that tells if the
* FileDescriptor is valid or not. If it is valid, then for serialization
* the fd will be written to the fd vector, or for deserialization the
* fd vector const_iterator will be valid.
@@ -517,42 +519,47 @@ IPADataSerializer<ControlInfoMap>::deserialize(std::vector<uint8_t>::const_itera
* This validity is necessary so that we don't send -1 fd over sendmsg(). It
* also allows us to simply send the entire fd vector into the deserializer
* and it will be recursively consumed as necessary.
- *
- * \todo Consider serializing the FileDescriptor in 4 bytes to ensure
- * 32-bit alignment of all serialized data
*/
template<>
-std::tuple<std::vector<uint8_t>, std::vector<int32_t>>
+std::tuple<std::vector<uint8_t>, std::vector<FileDescriptor>>
IPADataSerializer<FileDescriptor>::serialize(const FileDescriptor &data,
[[maybe_unused]] ControlSerializer *cs)
{
- std::vector<uint8_t> dataVec = { data.isValid() };
- std::vector<int32_t> fdVec;
+ std::vector<uint8_t> dataVec;
+ std::vector<FileDescriptor> fdVec;
+
+ /*
+ * Store as uint32_t to prepare for conversion from validity flag
+ * to index, and for alignment.
+ */
+ appendPOD<uint32_t>(dataVec, data.isValid());
+
if (data.isValid())
- fdVec.push_back(data.fd());
+ fdVec.push_back(data);
+
return { dataVec, fdVec };
}
template<>
-FileDescriptor IPADataSerializer<FileDescriptor>::deserialize(std::vector<uint8_t>::const_iterator dataBegin,
- std::vector<uint8_t>::const_iterator dataEnd,
- std::vector<int32_t>::const_iterator fdsBegin,
- std::vector<int32_t>::const_iterator fdsEnd,
+FileDescriptor IPADataSerializer<FileDescriptor>::deserialize([[maybe_unused]] std::vector<uint8_t>::const_iterator dataBegin,
+ [[maybe_unused]] std::vector<uint8_t>::const_iterator dataEnd,
+ std::vector<FileDescriptor>::const_iterator fdsBegin,
+ std::vector<FileDescriptor>::const_iterator fdsEnd,
[[maybe_unused]] ControlSerializer *cs)
{
- ASSERT(std::distance(dataBegin, dataEnd) >= 1);
+ ASSERT(std::distance(dataBegin, dataEnd) >= 4);
- bool valid = !!(*dataBegin);
+ uint32_t valid = readPOD<uint32_t>(dataBegin, 0, dataEnd);
ASSERT(!(valid && std::distance(fdsBegin, fdsEnd) < 1));
- return valid ? FileDescriptor(*fdsBegin) : FileDescriptor();
+ return valid ? *fdsBegin : FileDescriptor();
}
template<>
FileDescriptor IPADataSerializer<FileDescriptor>::deserialize(const std::vector<uint8_t> &data,
- const std::vector<int32_t> &fds,
+ const std::vector<FileDescriptor> &fds,
[[maybe_unused]] ControlSerializer *cs)
{
return deserialize(data.cbegin(), data.end(), fds.cbegin(), fds.end());
@@ -561,19 +568,19 @@ FileDescriptor IPADataSerializer<FileDescriptor>::deserialize(const std::vector<
/*
* FrameBuffer::Plane is serialized as:
*
- * 1 byte - FileDescriptor
+ * 4 byte - FileDescriptor
* 4 bytes - uint32_t Length
*/
template<>
-std::tuple<std::vector<uint8_t>, std::vector<int32_t>>
+std::tuple<std::vector<uint8_t>, std::vector<FileDescriptor>>
IPADataSerializer<FrameBuffer::Plane>::serialize(const FrameBuffer::Plane &data,
[[maybe_unused]] ControlSerializer *cs)
{
std::vector<uint8_t> dataVec;
- std::vector<int32_t> fdsVec;
+ std::vector<FileDescriptor> fdsVec;
std::vector<uint8_t> fdBuf;
- std::vector<int32_t> fdFds;
+ std::vector<FileDescriptor> fdFds;
std::tie(fdBuf, fdFds) =
IPADataSerializer<FileDescriptor>::serialize(data.fd);
dataVec.insert(dataVec.end(), fdBuf.begin(), fdBuf.end());
@@ -588,15 +595,15 @@ template<>
FrameBuffer::Plane
IPADataSerializer<FrameBuffer::Plane>::deserialize(std::vector<uint8_t>::const_iterator dataBegin,
std::vector<uint8_t>::const_iterator dataEnd,
- std::vector<int32_t>::const_iterator fdsBegin,
- [[maybe_unused]] std::vector<int32_t>::const_iterator fdsEnd,
+ std::vector<FileDescriptor>::const_iterator fdsBegin,
+ [[maybe_unused]] std::vector<FileDescriptor>::const_iterator fdsEnd,
[[maybe_unused]] ControlSerializer *cs)
{
FrameBuffer::Plane ret;
- ret.fd = IPADataSerializer<FileDescriptor>::deserialize(dataBegin, dataBegin + 1,
+ ret.fd = IPADataSerializer<FileDescriptor>::deserialize(dataBegin, dataBegin + 4,
fdsBegin, fdsBegin + 1);
- ret.length = readPOD<uint32_t>(dataBegin, 1, dataEnd);
+ ret.length = readPOD<uint32_t>(dataBegin, 4, dataEnd);
return ret;
}
@@ -604,7 +611,7 @@ IPADataSerializer<FrameBuffer::Plane>::deserialize(std::vector<uint8_t>::const_i
template<>
FrameBuffer::Plane
IPADataSerializer<FrameBuffer::Plane>::deserialize(const std::vector<uint8_t> &data,
- const std::vector<int32_t> &fds,
+ const std::vector<FileDescriptor> &fds,
ControlSerializer *cs)
{
return deserialize(data.cbegin(), data.end(), fds.cbegin(), fds.end(), cs);
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-26 16:38:32 +0000