libcamera/vivid.git - libcamera pipeline handler for VIVID

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/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * camera_metadata.cpp - libcamera Android Camera Metadata Helper */ #include "camera_metadata.h" #include <libcamera/base/log.h> using namespace libcamera; LOG_DEFINE_CATEGORY(CameraMetadata) CameraMetadata::CameraMetadata() : metadata_(nullptr), valid_(false), resized_(false) { } CameraMetadata::CameraMetadata(size_t entryCapacity, size_t dataCapacity) : resized_(false) { metadata_ = allocate_camera_metadata(entryCapacity, dataCapacity); valid_ = metadata_ != nullptr; } CameraMetadata::CameraMetadata(const camera_metadata_t *metadata) : resized_(false) { metadata_ = clone_camera_metadata(metadata); valid_ = metadata_ != nullptr; } CameraMetadata::CameraMetadata(const CameraMetadata &other) : CameraMetadata(other.getMetadata()) { } CameraMetadata::~CameraMetadata() { if (metadata_) free_camera_metadata(metadata_); } CameraMetadata &CameraMetadata::operator=(const CameraMetadata &other) { if (this == &other) return *this; if (metadata_) free_camera_metadata(metadata_); metadata_ = clone_camera_metadata(other.getMetadata()); valid_ = metadata_ != nullptr; return *this; } std::tuple<size_t, size_t> CameraMetadata::usage() const { size_t currentEntryCount = get_camera_metadata_entry_count(metadata_); size_t currentDataCount = get_camera_metadata_data_count(metadata_); return { currentEntryCount, currentDataCount }; } bool CameraMetadata::getEntry(uint32_t tag, camera_metadata_ro_entry_t *entry) const { if (find_camera_metadata_ro_entry(metadata_, tag, entry)) return false; return true; } /* * \brief Resize the metadata container, if necessary * \param[in] count Number of entries to add to the container * \param[in] size Total size of entries to add, in bytes * \return True if resize was successful or unnecessary, false otherwise */ bool CameraMetadata::resize(size_t count, size_t size) { if (!valid_) return false; if (!count && !size) return true; size_t currentEntryCount = get_camera_metadata_entry_count(metadata_); size_t currentEntryCapacity = get_camera_metadata_entry_capacity(metadata_); size_t newEntryCapacity = currentEntryCapacity < currentEntryCount + count ? currentEntryCapacity * 2 : currentEntryCapacity; size_t currentDataCount = get_camera_metadata_data_count(metadata_); size_t currentDataCapacity = get_camera_metadata_data_capacity(metadata_); size_t newDataCapacity = currentDataCapacity < currentDataCount + size ? currentDataCapacity * 2 : currentDataCapacity; if (newEntryCapacity > currentEntryCapacity || newDataCapacity > currentDataCapacity) { camera_metadata_t *oldMetadata = metadata_; metadata_ = allocate_camera_metadata(newEntryCapacity, newDataCapacity); if (!metadata_) { metadata_ = oldMetadata; return false; } LOG(CameraMetadata, Info) << "Resized: old entry capacity " << currentEntryCapacity << ", old data capacity " << currentDataCapacity << ", new entry capacity " << newEntryCapacity << ", new data capacity " << newDataCapacity; append_camera_metadata(metadata_, oldMetadata); free_camera_metadata(oldMetadata); resized_ = true; } return true; } template<> bool CameraMetadata::entryContains(uint32_t tag, uint8_t value) const { camera_metadata_ro_entry_t entry; if (!getEntry(tag, &entry)) return false; for (unsigned int i = 0; i < entry.count; i++) { if (entry.data.u8[i] == value) return true; } return false; } bool CameraMetadata::hasEntry(uint32_t tag) const { camera_metadata_ro_entry_t entry; return getEntry(tag, &entry); } bool CameraMetadata::addEntry(uint32_t tag, const void *data, size_t count, size_t elementSize) { if (!valid_) return false; if (!resize(1, count * elementSize)) { LOG(CameraMetadata, Error) << "Failed to resize"; valid_ = false; return false; } if (!add_camera_metadata_entry(metadata_, tag, data, count)) return true; const char *name = get_camera_metadata_tag_name(tag); if (name) LOG(CameraMetadata, Error) << "Failed to add tag " << name; else LOG(CameraMetadata, Error) << "Failed to add unknown tag " << tag; valid_ = false; return false; } bool CameraMetadata::updateEntry(uint32_t tag, const void *data, size_t count, size_t elementSize) { if (!valid_) return false; camera_metadata_entry_t entry; int ret = find_camera_metadata_entry(metadata_, tag, &entry); if (ret) { const char *name = get_camera_metadata_tag_name(tag); LOG(CameraMetadata, Error) << "Failed to update tag " << (name ? name : "<unknown>") << ": not present"; return false; } if (camera_metadata_type_size[entry.type] != elementSize) { const char *name = get_camera_metadata_tag_name(tag); LOG(CameraMetadata, Fatal) << "Invalid element size for tag " << (name ? name : "<unknown>"); return false; } size_t oldSize = calculate_camera_metadata_entry_data_size(entry.type, entry.count); size_t newSize = calculate_camera_metadata_entry_data_size(entry.type, count); size_t sizeIncrement = newSize - oldSize > 0 ? newSize - oldSize : 0; if (!resize(0, sizeIncrement)) { LOG(CameraMetadata, Error) << "Failed to resize"; valid_ = false; return false; } ret = update_camera_metadata_entry(metadata_, entry.index, data, count, nullptr); if (!ret) return true; const char *name = get_camera_metadata_tag_name(tag); LOG(CameraMetadata, Error) << "Failed to update tag " << (name ? name : "<unknown>"); valid_ = false; return false; } camera_metadata_t *CameraMetadata::getMetadata() { return valid_ ? metadata_ : nullptr; } const camera_metadata_t *CameraMetadata::getMetadata() const { return valid_ ? metadata_ : nullptr; }


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