From ffbcb67f5461844c98c82b1ae57ef472cf07a942 Mon Sep 17 00:00:00 2001
From: Henry Pinkard <7969470+henrypinkard@users.noreply.github.com>
Date: Fri, 17 Nov 2023 15:01:58 -0800
Subject: [PATCH] add method for reading metadata without reading image

---
 java/pom.xml                                              | 2 +-
 .../java/org/micromanager/ndtiffstorage/NDRAMStorage.java | 5 +++++
 .../java/org/micromanager/ndtiffstorage/NDTiffAPI.java    | 8 ++++++++
 .../org/micromanager/ndtiffstorage/NDTiffStorage.java     | 8 ++++++++
 4 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/java/pom.xml b/java/pom.xml
index 8f17312..5ca4175 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -2,7 +2,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.micro-manager.ndtiffstorage</groupId>
     <artifactId>NDTiffStorage</artifactId>
-    <version>2.15.3</version>
+    <version>2.16.0</version>
     <packaging>jar</packaging>
     <name>NDTiff Storage file format</name>
     <description>Java-based writer and reader used for NDTiffStorage format</description>
diff --git a/java/src/main/java/org/micromanager/ndtiffstorage/NDRAMStorage.java b/java/src/main/java/org/micromanager/ndtiffstorage/NDRAMStorage.java
index 91cae0b..7950339 100644
--- a/java/src/main/java/org/micromanager/ndtiffstorage/NDRAMStorage.java
+++ b/java/src/main/java/org/micromanager/ndtiffstorage/NDRAMStorage.java
@@ -108,6 +108,11 @@ public TaggedImage getImage(HashMap<String, Object> axes) {
       return new TaggedImage(images_.get(axes), metadata_.get(axes));
    }
 
+   @Override
+   public JSONObject getImageMetadata(HashMap<String, Object> axes) {
+      return metadata_.get(axes);
+   }
+
    @Override
    public TaggedImage getSubImage(HashMap<String, Object> axes, int xOffset, int yOffset, int width,
                                   int height) {
diff --git a/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffAPI.java b/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffAPI.java
index e073072..b8fe4f9 100644
--- a/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffAPI.java
+++ b/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffAPI.java
@@ -114,6 +114,14 @@ public Future<IndexEntryData> putImage(Object pixels, JSONObject metadata, HashM
     */
    public TaggedImage getImage(HashMap<String, Object> axes);
 
+   /**
+    * Get the metadata for a single image
+    *
+    * @param axes
+    * @return
+    */
+   public JSONObject getImageMetadata(HashMap<String, Object> axes);
+
    /**
     * Get a sub-image of the image with the specified axes
     *
diff --git a/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffStorage.java b/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffStorage.java
index 666dca5..ac49f72 100644
--- a/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffStorage.java
+++ b/java/src/main/java/org/micromanager/ndtiffstorage/NDTiffStorage.java
@@ -943,6 +943,14 @@ public TaggedImage getImage(HashMap<String, Object> axes) {
       return getImage(axes, 0);
    }
 
+   @Override
+   public JSONObject getImageMetadata(HashMap<String, Object> axes) {
+      if (fullResStorage_ == null) {
+         return null;
+      }
+      return fullResStorage_.getImageTags(IndexEntryData.serializeAxes(axes));
+   }
+
    @Override
    public TaggedImage getSubImage(HashMap<String, Object> axes, int xOffset, int yOffset, int width,
                                   int height) {