diff options
| -rw-r--r-- | include/libcamera/ipa/ipa_controls.h | 9 | ||||
| -rw-r--r-- | src/libcamera/control_serializer.cpp | 66 | ||||
| -rw-r--r-- | src/libcamera/ipa_controls.cpp | 29 |
3 files changed, 91 insertions, 13 deletions
diff --git a/include/libcamera/ipa/ipa_controls.h b/include/libcamera/ipa/ipa_controls.h index 6d3bf279..eec34d92 100644 --- a/include/libcamera/ipa/ipa_controls.h +++ b/include/libcamera/ipa/ipa_controls.h @@ -15,13 +15,20 @@ extern "C" { #define IPA_CONTROLS_FORMAT_VERSION 1 +enum ipa_controls_id_map_type { + IPA_CONTROL_ID_MAP_CONTROLS, + IPA_CONTROL_ID_MAP_PROPERTIES, + IPA_CONTROL_ID_MAP_V4L2, +}; + struct ipa_controls_header { uint32_t version; uint32_t handle; uint32_t entries; uint32_t size; uint32_t data_offset; - uint32_t reserved[3]; + enum ipa_controls_id_map_type id_map_type; + uint32_t reserved[2]; }; struct ipa_control_value_entry { diff --git a/src/libcamera/control_serializer.cpp b/src/libcamera/control_serializer.cpp index ed456fd4..27360526 100644 --- a/src/libcamera/control_serializer.cpp +++ b/src/libcamera/control_serializer.cpp @@ -16,6 +16,8 @@ #include <libcamera/control_ids.h> #include <libcamera/controls.h> +#include <libcamera/property_ids.h> + #include <libcamera/ipa/ipa_controls.h> #include "libcamera/internal/byte_stream_buffer.h" @@ -188,6 +190,15 @@ int ControlSerializer::serialize(const ControlInfoMap &infoMap, for (const auto &ctrl : infoMap) valuesSize += binarySize(ctrl.second); + const ControlIdMap *idmap = &infoMap.idmap(); + enum ipa_controls_id_map_type idMapType; + if (idmap == &controls::controls) + idMapType = IPA_CONTROL_ID_MAP_CONTROLS; + else if (idmap == &properties::properties) + idMapType = IPA_CONTROL_ID_MAP_PROPERTIES; + else + idMapType = IPA_CONTROL_ID_MAP_V4L2; + /* Prepare the packet header, assign a handle to the ControlInfoMap. */ struct ipa_controls_header hdr; hdr.version = IPA_CONTROLS_FORMAT_VERSION; @@ -195,6 +206,7 @@ int ControlSerializer::serialize(const ControlInfoMap &infoMap, hdr.entries = infoMap.size(); hdr.size = sizeof(hdr) + entriesSize + valuesSize; hdr.data_offset = sizeof(hdr) + entriesSize; + hdr.id_map_type = idMapType; buffer.write(&hdr); @@ -368,6 +380,33 @@ ControlInfoMap ControlSerializer::deserialize<ControlInfoMap>(ByteStreamBuffer & return {}; } + /* + * Use the ControlIdMap corresponding to the id map type. If the type + * references a globally defined id map (such as controls::controls + * or properties::properties), use it. Otherwise, create a local id map + * that will be populated with dynamically created ControlId instances + * when deserializing individual ControlInfoMap entries. + */ + const ControlIdMap *idMap = nullptr; + ControlIdMap *localIdMap = nullptr; + switch (hdr->id_map_type) { + case IPA_CONTROL_ID_MAP_CONTROLS: + idMap = &controls::controls; + break; + case IPA_CONTROL_ID_MAP_PROPERTIES: + idMap = &properties::properties; + break; + case IPA_CONTROL_ID_MAP_V4L2: + controlIdMaps_.emplace_back(std::make_unique<ControlIdMap>()); + localIdMap = controlIdMaps_.back().get(); + idMap = localIdMap; + break; + default: + LOG(Serializer, Error) + << "Unknown id map type: " << hdr->id_map_type; + return {}; + } + ByteStreamBuffer entries = buffer.carveOut(hdr->data_offset - sizeof(*hdr)); ByteStreamBuffer values = buffer.carveOut(hdr->size - hdr->data_offset); @@ -377,9 +416,6 @@ ControlInfoMap ControlSerializer::deserialize<ControlInfoMap>(ByteStreamBuffer & } ControlInfoMap::Map ctrls; - controlIdMaps_.emplace_back(std::make_unique<ControlIdMap>()); - ControlIdMap *localIdMap = controlIdMaps_.back().get(); - for (unsigned int i = 0; i < hdr->entries; ++i) { const struct ipa_control_info_entry *entry = entries.read<decltype(*entry)>(); @@ -388,15 +424,21 @@ ControlInfoMap ControlSerializer::deserialize<ControlInfoMap>(ByteStreamBuffer & return {}; } - /* Create and cache the individual ControlId. */ ControlType type = static_cast<ControlType>(entry->type); - /** - * \todo Find a way to preserve the control name for debugging - * purpose. - */ - controlIds_.emplace_back(std::make_unique<ControlId>(entry->id, "", type)); - ControlId *controlId = controlIds_.back().get(); - (*localIdMap)[entry->id] = controlId; + + /* If we're using a local id map, populate it. */ + if (localIdMap) { + /** + * \todo Find a way to preserve the control name for + * debugging purpose. + */ + controlIds_.emplace_back(std::make_unique<ControlId>(entry->id, + "", type)); + (*localIdMap)[entry->id] = controlIds_.back().get(); + } + + const ControlId *controlId = idMap->at(entry->id); + ASSERT(controlId); if (entry->offset != values.offset()) { LOG(Serializer, Error) @@ -413,7 +455,7 @@ ControlInfoMap ControlSerializer::deserialize<ControlInfoMap>(ByteStreamBuffer & * Create the ControlInfoMap in the cache, and store the map to handle * association. */ - infoMaps_[hdr->handle] = ControlInfoMap(std::move(ctrls), *localIdMap); + infoMaps_[hdr->handle] = ControlInfoMap(std::move(ctrls), *idMap); ControlInfoMap &map = infoMaps_[hdr->handle]; infoMapHandles_[&map] = hdr->handle; diff --git a/src/libcamera/ipa_controls.cpp b/src/libcamera/ipa_controls.cpp index 8fd72651..fb98cda3 100644 --- a/src/libcamera/ipa_controls.cpp +++ b/src/libcamera/ipa_controls.cpp @@ -135,6 +135,33 @@ */ /** + * \var ipa_controls_id_map_type + * \brief Enumerates the different control id map types + * + * Each ControlInfoMap and ControlList refers to a control id map that + * associates the ControlId references to a numerical identifier. + * During the serialization procedure the raw pointers to the ControlId + * instances cannot be transported on the wire, hence their numerical id is + * used to identify them in the serialized data buffer. At deserialization time + * it is required to associate back to the numerical id the ControlId instance + * it represents. This enumeration describes which ControlIdMap should be + * used to perform such operation. + * + * \var ipa_controls_id_map_type::IPA_CONTROL_ID_MAP_CONTROLS + * \brief The numerical control identifier are resolved to a ControlId * using + * the global controls::controls id map + * \var ipa_controls_id_map_type::IPA_CONTROL_ID_MAP_PROPERTIES + * \brief The numerical control identifier are resolved to a ControlId * using + * the global properties::properties id map + * \var ipa_controls_id_map_type::IPA_CONTROL_ID_MAP_V4L2 + * \brief ControlId for V4L2 defined controls are created by the video device + * that enumerates them, and are not available across the IPC boundaries. The + * deserializer shall create new ControlId instances for them as well as store + * them in a dedicated ControlIdMap. Only lookup by numerical id can be + * performed on de-serialized ControlInfoMap that represents V4L2 controls. + */ + +/** * \struct ipa_controls_header * \brief Serialized control packet header * \var ipa_controls_header::version @@ -149,6 +176,8 @@ * The total packet size in bytes * \var ipa_controls_header::data_offset * Offset in bytes from the beginning of the packet of the data section start + * \var ipa_controls_header::id_map_type + * The id map type as defined by the ipa_controls_id_map_type enumeration * \var ipa_controls_header::reserved * Reserved for future extensions */ |