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/* Copyright 2016 Software Freedom Conservancy Inc.
*
* This software is licensed under the GNU LGPL (version 2.1 or later).
* See the COPYING file in this distribution.
*/
class AvifFileFormatProperties : PhotoFileFormatProperties {
private static string[] KNOWN_EXTENSIONS = { "avif" };
private static string[] KNOWN_MIME_TYPES = { "image/avif" };
private static AvifFileFormatProperties instance = null;
public static void init() {
instance = new AvifFileFormatProperties();
}
public static AvifFileFormatProperties get_instance() {
return instance;
}
public override PhotoFileFormat get_file_format() {
return PhotoFileFormat.AVIF;
}
public override PhotoFileFormatFlags get_flags() {
return PhotoFileFormatFlags.NONE;
}
public override string get_user_visible_name() {
return _("AVIF");
}
public override string get_default_extension() {
return KNOWN_EXTENSIONS[0];
}
public override string[] get_known_extensions() {
return KNOWN_EXTENSIONS;
}
public override string get_default_mime_type() {
return KNOWN_MIME_TYPES[0];
}
public override string[] get_mime_types() {
return KNOWN_MIME_TYPES;
}
}
public class AvifSniffer : GdkSniffer {
public AvifSniffer(File file, PhotoFileSniffer.Options options) {
base (file, options);
}
public override DetectedPhotoInformation? sniff(out bool is_corrupted) throws Error {
// Rely on GdkSniffer to detect corruption
is_corrupted = false;
if (!is_supported_bmff_with_variants(file, {"avif", "avis"}))
return null;
DetectedPhotoInformation? detected = base.sniff(out is_corrupted);
if (detected == null)
return null;
return (detected.file_format == PhotoFileFormat.AVIF) ? detected : null;
}
}
public class AvifReader : GdkReader {
public AvifReader(string filepath) {
base (filepath, PhotoFileFormat.AVIF);
}
}
public class AvifWriter : PhotoFileWriter {
public AvifWriter(string filepath) {
base (filepath, PhotoFileFormat.AVIF);
}
public override void write(Gdk.Pixbuf pixbuf, Jpeg.Quality quality) throws Error {
pixbuf.save(get_filepath(), "avif", "quality", quality.get_pct_text(), null);
}
}
public class AvifMetadataWriter : PhotoFileMetadataWriter {
public AvifMetadataWriter(string filepath) {
base (filepath, PhotoFileFormat.AVIF);
}
public override void write_metadata(PhotoMetadata metadata) throws Error {
// TODO: Not yet implemented in gexiv2
// metadata.write_to_file(get_file());
}
}
public class AvifFileFormatDriver : PhotoFileFormatDriver {
private static AvifFileFormatDriver instance = null;
public static void init() {
instance = new AvifFileFormatDriver();
AvifFileFormatProperties.init();
var formats = Gdk.Pixbuf.get_formats();
var seen = false;
can_write = true;
foreach (var format in formats) {
if (format.get_name() == "avif") {
seen = true;
can_write = can_write && format.is_writable();
}
}
can_write = can_write && seen;
}
public static AvifFileFormatDriver get_instance() {
return instance;
}
public override PhotoFileFormatProperties get_properties() {
return AvifFileFormatProperties.get_instance();
}
public override PhotoFileReader create_reader(string filepath) {
return new AvifReader(filepath);
}
static bool can_write;
public override bool can_write_image() {
return AvifFileFormatDriver.can_write;
}
public override bool can_write_metadata() {
return false;
}
public override PhotoFileWriter? create_writer(string filepath) {
return new AvifWriter(filepath);
}
public override PhotoFileMetadataWriter? create_metadata_writer(string filepath) {
return new AvifMetadataWriter(filepath);
}
public override PhotoFileSniffer create_sniffer(File file, PhotoFileSniffer.Options options) {
return new AvifSniffer(file, options);
}
public override PhotoMetadata create_metadata() {
return new PhotoMetadata();
}
}
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