From a0254c0e2f1d3667c302b92c820bc7aa4a85ecf3 Mon Sep 17 00:00:00 2001
From: Edgard Lima <edgard.lima@indt.org.br>
Date: Sun, 10 Feb 2008 04:36:12 +0000
Subject: Map Date-Time and GPS tags.

Original commit message from CVS:
Map Date-Time and GPS tags.
---
 ext/metadata/metadatatags.c | 69 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

(limited to 'ext/metadata/metadatatags.c')

diff --git a/ext/metadata/metadatatags.c b/ext/metadata/metadatatags.c
index e8b0c1f3..b79830d1 100644
--- a/ext/metadata/metadatatags.c
+++ b/ext/metadata/metadatatags.c
@@ -364,29 +364,98 @@ metadata_tags_exif_register (void)
       "The name of the first known tool used to create the resource."
       " Or firmware or driver version of device", NULL);
 
+  /* date and time tags */
+  /* formated as subset of ISO RFC 8601 as described in
+   * http://www.w3.org/TR/1998/NOTE-datetime-19980827
+   * which is:
+   * YYYY
+   * YYYY-MM
+   * YYYY-MM-DD
+   * YYYY-MM-DDThh:mmTZD
+   * YYYY-MM-DDThh:mm:ssTZD
+   * YYYY-MM-DDThh:mm:ss.sTZD
+   * where:
+   * YYYY = four-digit year
+   * MM = two-digit month (01=January)
+   * DD = two-digit day of month (01 through 31)
+   * hh = two digits of hour (00 through 23)
+   * mm = two digits of minute (00 through 59)
+   * ss = two digits of second (00 through 59)
+   * s = one or more digits representing a decimal fraction of a second
+   * TZD = time zone designator (Z or +hh:mm or -hh:mm)
+   */
+
+  gst_tag_register (GST_TAG_DATE_TIME_DIGITIZED, GST_TAG_FLAG_META,
+      G_TYPE_STRING, GST_TAG_DATE_TIME_DIGITIZED,
+      "Date/Time of image digitized", NULL);
+
+  gst_tag_register (GST_TAG_DATE_TIME_MODIFIED, GST_TAG_FLAG_META,
+      G_TYPE_STRING, GST_TAG_DATE_TIME_MODIFIED,
+      "Date/Time of image was last modified", NULL);
+
+  gst_tag_register (GST_TAG_DATE_TIME_ORIGINAL, GST_TAG_FLAG_META,
+      G_TYPE_STRING, GST_TAG_DATE_TIME_ORIGINAL,
+      "Date/Time of original image taken", NULL);
+
   /* devices tags */
 
   gst_tag_register (GST_TAG_DEVICE_MAKE, GST_TAG_FLAG_META,
       G_TYPE_STRING, GST_TAG_DEVICE_MAKE,
       "The manufacturer of the recording equipment", NULL);
+
   gst_tag_register (GST_TAG_DEVICE_MODEL, GST_TAG_FLAG_META, G_TYPE_STRING,
       GST_TAG_DEVICE_MODEL, "The model name or model number of the equipment",
       NULL);
 
+  /* exif specific tags */
+
+  gst_tag_register (GST_TAG_EXIF_MAKER_NOTE, GST_TAG_FLAG_META,
+      GST_TYPE_BUFFER, GST_TAG_EXIF_MAKER_NOTE, "Camera private data", NULL);
+
   /* image tags */
 
   gst_tag_register (GST_TAG_IMAGE_HEIGHT, GST_TAG_FLAG_META,
       G_TYPE_UINT, GST_TAG_IMAGE_HEIGHT, "Image height in pixels", NULL);
+
   gst_tag_register (GST_TAG_IMAGE_WIDTH, GST_TAG_FLAG_META,
       G_TYPE_UINT, GST_TAG_IMAGE_WIDTH, "Image width in pixels", NULL);
 
   gst_tag_register (GST_TAG_IMAGE_XRESOLUTION, GST_TAG_FLAG_META,
       GST_TYPE_FRACTION, GST_TAG_IMAGE_XRESOLUTION,
       "Horizontal resolution in pixels per inch", NULL);
+
   gst_tag_register (GST_TAG_IMAGE_YRESOLUTION, GST_TAG_FLAG_META,
       GST_TYPE_FRACTION, GST_TAG_IMAGE_YRESOLUTION,
       "Vertical resolution in pixels per inch", NULL);
 
+  /* GPS tags */
+
+  /* Altitude:
+   * positive values means above the sea level
+   * negative values means under the sea level
+   */
+
+  gst_tag_register (GST_TAG_GPS_ALTITUDE, GST_TAG_FLAG_META,
+      GST_TYPE_FRACTION, GST_TAG_GPS_ALTITUDE, "Altitude", NULL);
+
+  /* Latitude:
+   * "DDD,MM,SSk" or "DDD,MM.mmk" fixed size string where:
+   * D- degrees, M- minutes, S-seconds,
+   * mm- fraction of minutes, k- N (north) or S (south)
+   */
+
+  gst_tag_register (GST_TAG_GPS_LATITUDE, GST_TAG_FLAG_META,
+      G_TYPE_STRING, GST_TAG_GPS_LATITUDE, "Latitude", NULL);
+
+  /* Longitude:
+   * "DDD,MM,SSk" or "DDD,MM.mmk" fixed size string where:
+   * D- degrees, M- minutes, S-seconds,
+   * mm- fraction of minutes, k- N (north) or S (south)
+   */
+
+  gst_tag_register (GST_TAG_GPS_LONGITUDE, GST_TAG_FLAG_META,
+      G_TYPE_STRING, GST_TAG_GPS_LONGITUDE, "Longitude", NULL);
+
 }
 
 /*
-- 
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