Add simple webcam capture

app.py

@@ -1,7 +1,33 @@
 import gradio as gr
+import numpy as np
+import zipfile
 
-def greet(name):
-    return "Hello " + name + "!!"
 
-demo = gr.Interface(fn=greet, inputs="text", outputs="text")
-demo.launch()
+def add_image(camera: gr.Image, gallery: gr.Gallery):
+    if gallery:
+        images = gallery
+        images.append(camera)
+        return images
+    else:
+        return [camera]
+
+
+with gr.Blocks(fill_height=True) as demo:
+    with gr.Row():
+        with gr.Column():
+            camera = gr.Image(type="pil", format="png", webcam_constraints={
+                              "video": {"width": 640, "height": 640}}, sources="webcam", scale=0)
+            catch_btn = gr.Button("Capture", scale=0)
+        with gr.Column():
+            preview_img = gr.Image(visible=False)
+    with gr.Row():
+        with gr.Column():
+            gallery = gr.Gallery(
+                label="Collected images", show_label=False, elem_id="gallery", columns=[10], rows=[4], object_fit="contain", height="auto")
+            download_btn = gr.Button("Download", scale=0)
+
+    catch_btn.click(add_image, [preview_img, gallery], [gallery])
+    camera.stream(lambda s: s, camera, preview_img)
+
+if __name__ == "__main__":
+    demo.launch()