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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/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;
}
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