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authorJörg Frings-Fürst <debian@jff.email>2023-06-14 20:35:58 +0200
committerJörg Frings-Fürst <debian@jff.email>2023-06-14 20:35:58 +0200
commitd443a3c2509889533ca812c163056bace396b586 (patch)
treee94ffc0d9c054ca4efb8fb327e18dfac88e15dc7 /src/photos/HeifSupport.vala
parentbb9797c14470641b082ebf635e2ae3cfd5f27a3b (diff)
New upstream version 0.32.1upstream/0.32.1
Diffstat (limited to 'src/photos/HeifSupport.vala')
-rw-r--r--src/photos/HeifSupport.vala150
1 files changed, 150 insertions, 0 deletions
diff --git a/src/photos/HeifSupport.vala b/src/photos/HeifSupport.vala
new file mode 100644
index 0000000..0c05e02
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+++ b/src/photos/HeifSupport.vala
@@ -0,0 +1,150 @@
+/* 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 HeifFileFormatProperties : PhotoFileFormatProperties {
+ private static string[] KNOWN_EXTENSIONS = { "heif", "heic" };
+ private static string[] KNOWN_MIME_TYPES = { "image/heif" };
+
+ private static HeifFileFormatProperties instance = null;
+
+ public static void init() {
+ instance = new HeifFileFormatProperties();
+ }
+
+ public static HeifFileFormatProperties get_instance() {
+ return instance;
+ }
+
+ public override PhotoFileFormat get_file_format() {
+ return PhotoFileFormat.HEIF;
+ }
+
+ public override PhotoFileFormatFlags get_flags() {
+ return PhotoFileFormatFlags.NONE;
+ }
+
+ public override string get_user_visible_name() {
+ return _("HEIF");
+ }
+
+ 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 HeifSniffer : GdkSniffer {
+ private const string[] MAGIC_SEQUENCES = { "heic", "heix", "hevc", "heim", "heis", "hevm", "hevs", "mif1", "msf1"};
+
+ public HeifSniffer(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, MAGIC_SEQUENCES))
+ return null;
+
+ DetectedPhotoInformation? detected = base.sniff(out is_corrupted);
+ if (detected == null)
+ return null;
+
+ if (detected.file_format == PhotoFileFormat.AVIF)
+ detected.file_format = PhotoFileFormat.HEIF;
+
+ // Heif contains its own rotation information, so we need to ignore the EXIF rotation+
+ if (detected.metadata != null) {
+ detected.metadata.set_orientation(Orientation.TOP_LEFT);
+ }
+
+ return (detected.file_format == PhotoFileFormat.HEIF) ? detected : null;
+ }
+
+}
+
+public class HeifReader : GdkReader {
+ public HeifReader(string filepath) {
+ base (filepath, PhotoFileFormat.HEIF);
+ }
+
+ public override PhotoMetadata read_metadata() throws Error {
+ PhotoMetadata metadata = new PhotoMetadata();
+ metadata.read_from_file(get_file());
+ // Heif contains its own rotation information, so we need to ignore the EXIF rotation
+ metadata.set_orientation(Orientation.TOP_LEFT);
+ return metadata;
+ }
+
+}
+
+public class HeifMetadataWriter : PhotoFileMetadataWriter {
+ public HeifMetadataWriter(string filepath) {
+ base (filepath, PhotoFileFormat.HEIF);
+ }
+
+ public override void write_metadata(PhotoMetadata metadata) throws Error {
+ metadata.write_to_file(get_file());
+ }
+}
+
+public class HeifFileFormatDriver : PhotoFileFormatDriver {
+ private static HeifFileFormatDriver instance = null;
+
+ public static void init() {
+ instance = new HeifFileFormatDriver();
+ HeifFileFormatProperties.init();
+ }
+
+ public static HeifFileFormatDriver get_instance() {
+ return instance;
+ }
+
+ public override PhotoFileFormatProperties get_properties() {
+ return HeifFileFormatProperties.get_instance();
+ }
+
+ public override PhotoFileReader create_reader(string filepath) {
+ return new HeifReader(filepath);
+ }
+
+ public override bool can_write_image() {
+ return false;
+ }
+
+ public override bool can_write_metadata() {
+ return true;
+ }
+
+ public override PhotoFileWriter? create_writer(string filepath) {
+ return null;
+ }
+
+ public override PhotoFileMetadataWriter? create_metadata_writer(string filepath) {
+ return new HeifMetadataWriter(filepath);
+ }
+
+ public override PhotoFileSniffer create_sniffer(File file, PhotoFileSniffer.Options options) {
+ return new HeifSniffer(file, options);
+ }
+
+ public override PhotoMetadata create_metadata() {
+ return new PhotoMetadata();
+ }
+}
+