/* 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/internal/log.h" using namespace libcamera; LOG_DEFINE_CATEGORY(CameraMetadata) CameraMetadata::CameraMetadata() : metadata_(nullptr), valid_(false) { } CameraMetadata::CameraMetadata(size_t entryCapacity, size_t dataCapacity) { metadata_ = allocate_camera_metadata(entryCapacity, dataCapacity); valid_ = metadata_ != nullptr; } CameraMetadata::CameraMetadata(const camera_metadata_t *metadata) { metadata_ = clone_camera_metadata(metadata); valid_ = metadata_ != nullptr; } CameraMetadata::CameraMetadata(const CameraMetadata &other) : CameraMetadata(other.get()) { } 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.get()); valid_ = metadata_ != nullptr; return *this; } 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; } bool CameraMetadata::addEntry(uint32_t tag, const void *data, size_t count) { if (!valid_) 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) { 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; } ret = update_camera_metadata_entry(metadata_, entry.index, data, count, nullptr); if (ret) { const char *name = get_camera_metadata_tag_name(tag); LOG(CameraMetadata, Error) << "Failed to update tag " << (name ? name : "<unknown>"); return false; } return true; } camera_metadata_t *CameraMetadata::get() { return valid_ ? metadata_ : nullptr; } const camera_metadata_t *CameraMetadata::get() const { return valid_ ? metadata_ : nullptr; }