HuggingFaceM4/Idefics3-8B-Llama3 crash fix

Signed-off-by: Wang, Yi A <yi.a.wang@intel.com>

router/src/config.rs

@@ -265,6 +265,10 @@ impl Idefics3 {
     pub fn get_max_longest_edge_for_image_resize(&self) -> usize {
         1456
     }
+
+    pub fn get_max_image_size(&self) -> usize {
+        4096
+    }
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]

router/src/validation.rs

@@ -646,11 +646,10 @@ fn image_tokens(
             const GLOBAL_IMG: &str = "<global-img>";
 
             let max_longest_edge_for_image_resize = config.get_max_longest_edge_for_image_resize();
+            let max_image_size = config.get_max_image_size();
 
-            // resize image if it is larger than max_longest_edge_for_image_resize keeping aspect ratio
+            // resize image to max_longest_edge_for_image_resize and keep aspect ratio
-            let (height, width) = if height > max_longest_edge_for_image_resize
+            let (height, width) = {
-                || width > max_longest_edge_for_image_resize
-            {
                 let aspect_ratio = height as f32 / width as f32;
                 if height > width {
                     (
@@ -663,8 +662,23 @@ fn image_tokens(
                         max_longest_edge_for_image_resize,
                     )
                 }
-            } else {
+            };
-                (height, width)
+
+            let (height, width) = {
+                let aspect_ratio = height as f32 / width as f32;
+                if height >= width && height > max_image_size {
+                    (
+                        max_image_size,
+                        (max_image_size as f32 / aspect_ratio) as usize,
+                    )
+                } else if width > height && width > max_image_size {
+                    (
+                        (max_image_size as f32 * aspect_ratio) as usize,
+                        max_image_size,
+                    )
+                } else {
+                    (height, width)
+                }
             };
 
             let image_seq_len = config.get_number_of_features();