1 files changed, 85 insertions, 0 deletions
diff --git a/gst-sdk/tutorials/android-tutorial-3/src/org/freedesktop/gstreamer/tutorial_3/GStreamerSurfaceView.java b/gst-sdk/tutorials/android-tutorial-3/src/org/freedesktop/gstreamer/tutorial_3/GStreamerSurfaceView.java
new file mode 100644
index 0000000..9af8aba
--- /dev/null
+++ b/gst-sdk/tutorials/android-tutorial-3/src/org/freedesktop/gstreamer/tutorial_3/GStreamerSurfaceView.java
@@ -0,0 +1,85 @@
+package org.freedesktop.gstreamer.tutorials.tutorial_3;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.SurfaceView;
+import android.view.View;
+
+// A simple SurfaceView whose width and height can be set from the outside
+public class GStreamerSurfaceView extends SurfaceView {
+    public int media_width = 320;
+    public int media_height = 240;
+
+    // Mandatory constructors, they do not do much
+    public GStreamerSurfaceView(Context context, AttributeSet attrs,
+            int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public GStreamerSurfaceView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public GStreamerSurfaceView (Context context) {
+        super(context);
+    }
+
+    // Called by the layout manager to find out our size and give us some rules.
+    // We will try to maximize our size, and preserve the media's aspect ratio if
+    // we are given the freedom to do so.
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        int width = 0, height = 0;
+        int wmode = View.MeasureSpec.getMode(widthMeasureSpec);
+        int hmode = View.MeasureSpec.getMode(heightMeasureSpec);
+        int wsize = View.MeasureSpec.getSize(widthMeasureSpec);
+        int hsize = View.MeasureSpec.getSize(heightMeasureSpec);
+
+        Log.i ("GStreamer", "onMeasure called with " + media_width + "x" + media_height);
+        // Obey width rules
+        switch (wmode) {
+        case View.MeasureSpec.AT_MOST:
+            if (hmode == View.MeasureSpec.EXACTLY) {
+                width = Math.min(hsize * media_width / media_height, wsize);
+                break;
+            }
+        case View.MeasureSpec.EXACTLY:
+            width = wsize;
+            break;
+        case View.MeasureSpec.UNSPECIFIED:
+            width = media_width;
+        }
+
+        // Obey height rules
+        switch (hmode) {
+        case View.MeasureSpec.AT_MOST:
+            if (wmode == View.MeasureSpec.EXACTLY) {
+                height = Math.min(wsize * media_height / media_width, hsize);
+                break;
+            }
+        case View.MeasureSpec.EXACTLY:
+            height = hsize;
+            break;
+        case View.MeasureSpec.UNSPECIFIED:
+            height = media_height;
+        }
+
+        // Finally, calculate best size when both axis are free
+        if (hmode == View.MeasureSpec.AT_MOST && wmode == View.MeasureSpec.AT_MOST) {
+            int correct_height = width * media_height / media_width;
+            int correct_width = height * media_width / media_height;
+
+            if (correct_height < height)
+                height = correct_height;
+            else
+                width = correct_width;
+        }
+
+        // Obey minimum size
+        width = Math.max (getSuggestedMinimumWidth(), width);
+        height = Math.max (getSuggestedMinimumHeight(), height);
+        setMeasuredDimension(width, height);
+    }
+
+}