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* Copyright 2023 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkJpegXmp_codec_DEFINED
#define SkJpegXmp_codec_DEFINED
#include "include/core/SkRefCnt.h"
#include "src/xml/SkDOM.h"
class SkData;
struct SkGainmapInfo;
#include <memory>
#include <vector>
* A structure to manage JPEG XMP metadata.
class SkJpegXmp {
// Find and parse all XMP metadata, given a list of all APP1 segment parameters.
static std::unique_ptr<SkJpegXmp> Make(const std::vector<sk_sp<SkData>>& decoderApp1Params);
// Extract HDRGM gainmap parameters.
bool getGainmapInfoHDRGM(SkGainmapInfo* info) const;
// Extract HDRGainMap gainmap parameters.
bool getGainmapInfoHDRGainMap(SkGainmapInfo* info) const;
// Extract JpegR gainmap parameters, along with the stream's offset from the end of the base
// image and its size.
bool getGainmapInfoJpegR(SkGainmapInfo* info, size_t* offset, size_t* size) const;
// Find an XMP node that has the specified namespace attributes set to the specified URIs. The
// XMP that this will search for is as follows (NAMESPACEi and URIi being the parameters
// specified to this function):
// <x:xmpmeta ...>
// <rdf:RDF ...>
// <rdf:Description NAMESPACE0="URI0" NAMESPACE1="URI1" .../>
// </rdf:RDF>
// </x:xmpmeta>
// This function will sequentially search the standard XMP, followed by the extended XMP (which
// is not correct behavior -- it should merge the two XMP trees and search the merged tree).
bool findNamespaceUriMatch(const char* namespaces[],
const char* uris[],
size_t count,
const SkDOM** outDom,
const SkDOM::Node** outNode) const;
// The DOM for the standard XMP.
SkDOM fStandardDOM;
// The DOM for the extended XMP. This may be invalid if there is no extended XMP, or the
// extended XMP failed to parse.
SkDOM fExtendedDOM;