[tracker/custom-dlna: 2/3] tracker-extract: Make PNG module handle DLNA profiles
- From: Carlos Garnacho <carlosg src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [tracker/custom-dlna: 2/3] tracker-extract: Make PNG module handle DLNA profiles
- Date: Mon, 13 Jun 2011 15:00:26 +0000 (UTC)
commit 5ffece56fad941abf2922280b082032c947e739e
Author: Carlos Garnacho <carlosg gnome org>
Date: Fri May 27 17:52:07 2011 +0200
tracker-extract: Make PNG module handle DLNA profiles
In this extractor makes little sense to perform calls to any
dlna library as we have all the necessary data right there.
src/tracker-extract/tracker-extract-png.c | 48 +++++++++++++++++++++++++++++
1 files changed, 48 insertions(+), 0 deletions(-)
---
diff --git a/src/tracker-extract/tracker-extract-png.c b/src/tracker-extract/tracker-extract-png.c
index 6326f5a..e64c9e3 100644
--- a/src/tracker-extract/tracker-extract-png.c
+++ b/src/tracker-extract/tracker-extract-png.c
@@ -533,6 +533,48 @@ read_metadata (TrackerSparqlBuilder *preupdate,
g_free (pd.creation_time);
}
+static gboolean
+guess_dlna_profile (gint depth,
+ gint width,
+ gint height,
+ const gchar **dlna_profile,
+ const gchar **dlna_mimetype)
+{
+ gchar *profile = NULL;
+
+ if (dlna_profile) {
+ *dlna_profile = NULL;
+ }
+
+ if (dlna_mimetype) {
+ *dlna_mimetype = NULL;
+ }
+
+ if (width == 120 && height == 120) {
+ profile = "PNG_LRG_ICO";
+ } else if (width == 48 && height == 48) {
+ profile = "PNG_SM_ICO";
+ } else if (width <= 160 && height <= 160) {
+ profile = "PNG_TN";
+ } else if (depth <= 32 && width <= 4096 && height <= 4096) {
+ profile = "PNG_LRG";
+ }
+
+ if (profile) {
+ if (dlna_profile) {
+ *dlna_profile = profile;
+ }
+
+ if (dlna_mimetype) {
+ *dlna_mimetype = "image/png";
+ }
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
G_MODULE_EXPORT gboolean
tracker_extract_get_metadata (const gchar *uri,
const gchar *mimetype,
@@ -550,6 +592,7 @@ tracker_extract_get_metadata (const gchar *uri,
png_uint_32 width, height;
gint bit_depth, color_type;
gint interlace_type, compression_type, filter_type;
+ const gchar *dlna_profile;
gchar *filename;
filename = g_filename_from_uri (uri, NULL, NULL);
@@ -644,6 +687,11 @@ tracker_extract_get_metadata (const gchar *uri,
tracker_sparql_builder_predicate (metadata, "nfo:height");
tracker_sparql_builder_object_int64 (metadata, height);
+ if (guess_dlna_profile (bit_depth, width, height, &dlna_profile, NULL)) {
+ tracker_sparql_builder_predicate (metadata, "nmm:dlnaProfile");
+ tracker_sparql_builder_object_string (metadata, dlna_profile);
+ }
+
png_destroy_read_struct (&png_ptr, &info_ptr, &end_ptr);
tracker_file_close (f, FALSE);
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