tag: More photography related tags

API: GST_TAG_CAPTURING_EXPOSURE_PROGRAM
API: GST_TAG_CAPTURING_EXPOSURE_MODE
API: GST_TAG_CAPTURING_SCENE_CAPTURE_TYPE
API: GST_TAG_CAPTURING_GAIN_ADJUSTMENT
API: GST_TAG_CAPTURING_WHITE_BALANCE
API: GST_TAG_CAPTURING_CONTRAST
API: GST_TAG_CAPTURING_SATURATION

Fixes #626651

3 files changed, 149 insertions, 0 deletions

diff --git a/docs/libs/gst-plugins-base-libs-sections.txt b/docs/libs/gst-plugins-base-libs-sections.txt
index c553f4bd3..5670f2ab5 100644
--- a/docs/libs/gst-plugins-base-libs-sections.txt
+++ b/docs/libs/gst-plugins-base-libs-sections.txt
@@ -1639,6 +1639,13 @@ GST_TAG_CAPTURING_FOCAL_RATIO
 GST_TAG_CAPTURING_FOCAL_LENGTH
 GST_TAG_CAPTURING_DIGITAL_ZOOM_RATIO
 GST_TAG_CAPTURING_ISO_SPEED
+GST_TAG_CAPTURING_EXPOSURE_PROGRAM
+GST_TAG_CAPTURING_EXPOSURE_MODE
+GST_TAG_CAPTURING_SCENE_CAPTURE_TYPE
+GST_TAG_CAPTURING_GAIN_ADJUSTMENT
+GST_TAG_CAPTURING_WHITE_BALANCE
+GST_TAG_CAPTURING_CONTRAST
+GST_TAG_CAPTURING_SATURATION
 gst_tag_register_musicbrainz_tags
 gst_tag_freeform_string_to_utf8
 gst_tag_parse_extended_comment
diff --git a/gst-libs/gst/tag/tag.h b/gst-libs/gst/tag/tag.h
index 399bc4331..08a024aee 100644
--- a/gst-libs/gst/tag/tag.h
+++ b/gst-libs/gst/tag/tag.h
@@ -168,6 +168,118 @@ G_BEGIN_DECLS
  */
 #define GST_TAG_CAPTURING_ISO_SPEED           "capturing-iso-speed"
 
+/**
+ * GST_TAG_CAPTURING_EXPOSURE_PROGRAM:
+ *
+ * Type of exposure control used when capturing an image. (string)
+ *
+ * The allowed values are:
+ *   "undefined"
+ *   "manual"
+ *   "normal" - automatically controlled
+ *   "aperture-priority" - user selects aperture value
+ *   "shutter-priority" - user selects shutter speed
+ *   "creative" - biased towards depth of field
+ *   "action" - biased towards fast shutter speed
+ *   "portrait" - closeup, leaving background out of focus
+ *   "landscape" - landscape photos, background in focus
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_CAPTURING_EXPOSURE_PROGRAM     "capturing-exposure-program"
+
+/**
+ * GST_TAG_CAPTURING_EXPOSURE_MODE:
+ *
+ * Exposure mode used when capturing an image. (string)
+ *
+ * The allowed values are:
+ *   "auto-exposure"
+ *   "manual-exposure"
+ *   "auto-bracket"
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_CAPTURING_EXPOSURE_MODE       "capturing-exposure-mode"
+
+/**
+ * GST_TAG_CAPTURING_SCENE_CAPTURE_TYPE:
+ *
+ * Scene mode used when capturing an image. (string)
+ *
+ * The allowed values are:
+ *   "standard"
+ *   "landscape"
+ *   "portrait"
+ *   "night-scene"
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_CAPTURING_SCENE_CAPTURE_TYPE  "capturing-scene-capture-type"
+
+/**
+ * GST_TAG_CAPTURING_GAIN_ADJUSTMENT:
+ *
+ * Gain adjustment applied to an image. (string)
+ *
+ * The allowed values are:
+ *   "none"
+ *   "low-gain-up"
+ *   "high-gain-up"
+ *   "low-gain-down"
+ *   "high-gain-down"
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_CAPTURING_GAIN_ADJUSTMENT     "capturing-gain-adjustment"
+
+/**
+ * GST_TAG_CAPTURING_WHITE_BALANCE:
+ *
+ * White balance mode used when capturing an image. (string)
+ *
+ * The allowed values are:
+ *   "auto"
+ *   "manual"
+ *   "daylight"
+ *   "cloudy"
+ *   "tungsten"
+ *   "fluorescent"
+ *   "fluorescent h" (newer daylight-calibrated fluorescents)
+ *   "flash"
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_CAPTURING_WHITE_BALANCE       "capturing-white-balance"
+
+/**
+ * GST_TAG_CAPTURING_CONTRAST:
+ *
+ * Direction of contrast processing applied when capturing an image. (string)
+ *
+ * The allowed values are:
+ *  "normal"
+ *  "soft"
+ *  "hard"
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_CAPTURING_CONTRAST            "capturing-contrast"
+
+/**
+ * GST_TAG_CAPTURING_SATURATION:
+ *
+ * Direction of saturation processing applied when capturing an image. (string)
+ *
+ * The allowed values are:
+ *  "normal"
+ *  "low-saturation"
+ *  "high-saturation"
+ *
+ * Since: 0.10.31
+ */
+#define GST_TAG_CAPTURING_SATURATION          "capturing-saturation"
+
 
 /* additional information for image tags */
 
diff --git a/gst-libs/gst/tag/tags.c b/gst-libs/gst/tag/tags.c
index 493fcb389..6b1a23d0d 100644
--- a/gst-libs/gst/tag/tags.c
+++ b/gst-libs/gst/tag/tags.c
@@ -106,6 +106,36 @@ gst_tag_register_tags_internal (gpointer unused)
       G_TYPE_INT, _("capturing iso speed"),
       _("The ISO speed used when capturing an image"), NULL);
 
+  gst_tag_register (GST_TAG_CAPTURING_EXPOSURE_PROGRAM, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("capturing exposure program"),
+      _("The exposure program used when capturing an image"), NULL);
+
+  gst_tag_register (GST_TAG_CAPTURING_EXPOSURE_MODE, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("capturing exposure mode"),
+      _("The exposure mode used when capturing an image"), NULL);
+
+  gst_tag_register (GST_TAG_CAPTURING_SCENE_CAPTURE_TYPE, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("capturing scene capture type"),
+      _("The scene capture mode used when capturing an image"), NULL);
+
+  gst_tag_register (GST_TAG_CAPTURING_GAIN_ADJUSTMENT, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("capturing gain adjustment"),
+      _("The overall gain adjustment applied on an image"), NULL);
+
+  gst_tag_register (GST_TAG_CAPTURING_WHITE_BALANCE, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("capturing white balance"),
+      _("The white balance mode set when capturing an image"), NULL);
+
+  gst_tag_register (GST_TAG_CAPTURING_CONTRAST, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("capturing contrast"),
+      _("The direction of contrast processing applied "
+          "when capturing an image"), NULL);
+
+  gst_tag_register (GST_TAG_CAPTURING_SATURATION, GST_TAG_FLAG_META,
+      G_TYPE_STRING, _("capturing saturation"),
+      _("The direction of saturation processing applied when "
+          "capturing an image"), NULL);
+
   return NULL;
 }