Testing of FileVideoCapturer

webrtc/examples/androidtests/src/org/appspot/apprtc/test/FileVideoCapturerTest.java

+/*
+ *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+package org.appspot.apprtc.test;
+
+import android.test.InstrumentationTestCase;
+import android.test.suitebuilder.annotation.LargeTest;
+import android.test.suitebuilder.annotation.MediumTest;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.webrtc.FileVideoCapturer;
+import org.webrtc.VideoCapturer;
+
+import java.io.IOException;
+import java.lang.Thread;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class FileVideoCapturerTest extends InstrumentationTestCase {
+  private static class Frame {
+    public byte[] data;
+    public int width;
+    public int height;
+  }
+
+  public class MockCapturerObserver implements VideoCapturer.CapturerObserver {
+    private final ArrayList<Frame> frameDatas = new ArrayList<Frame>();
+
+    @Override
+    public void onCapturerStarted(boolean success) {
+      assertTrue(success);
+    }
+
+    @Override
+    public void onCapturerStopped() {
+      // Empty on purpose.
+    }
+
+    @Override
+    public synchronized void onByteBufferFrameCaptured(
+        byte[] data, int width, int height, int rotation, long timeStamp) {
+      Frame frame = new Frame();
+      frame.data = data;
+      frame.width = width;
+      frame.height = height;
+      assertTrue(data.length != 0);
+      frameDatas.add(frame);
+      notify();
+    }
+
+    @Override
+    public void onTextureFrameCaptured(int width, int height, int oesTextureId,
+        float[] transformMatrix, int rotation, long timestamp) {
+      // Empty on purpose.
+    }
+
+    public synchronized ArrayList<Frame> getMinimumFramesBlocking(int minFrames)
+        throws InterruptedException {
+      while (frameDatas.size() < minFrames) {
+        wait();
+      }
+      return new ArrayList<Frame>(frameDatas);
+    }
+  }
+
+  @SmallTest
+  public void testVideoCaptureFromFile() throws InterruptedException, IOException {
+    final int FRAME_WIDTH = 4;
+    final int FRAME_HEIGHT = 4;
+    final FileVideoCapturer fileVideoCapturer = new FileVideoCapturer(
+        "/sdcard/chromium_tests_root/webrtc/examples/androidtests/src/org/appspot/apprtc/test/"
+        + "capturetestvideo.y4m");
+    final MockCapturerObserver capturerObserver = new MockCapturerObserver();
+    fileVideoCapturer.initialize(null, null, capturerObserver);
+    fileVideoCapturer.startCapture(FRAME_WIDTH, FRAME_HEIGHT, 33);
+
+    final String[] expectedFrames = {
+        "THIS IS JUST SOME TEXT x", "THE SECOND FRAME qwerty.", "HERE IS THE THRID FRAME!"};
+
+    final ArrayList<Frame> frameDatas;
+    frameDatas = capturerObserver.getMinimumFramesBlocking(expectedFrames.length);
+
+    assertEquals(expectedFrames.length, frameDatas.size());
+
+    fileVideoCapturer.stopCapture();
+    fileVideoCapturer.dispose();
+
+    for (int i = 0; i < expectedFrames.length; ++i) {
+      Frame frame = frameDatas.get(i);
+
+      assertEquals(FRAME_WIDTH, frame.width);
+      assertEquals(FRAME_HEIGHT, frame.height);
+      assertEquals(FRAME_WIDTH * FRAME_HEIGHT * 3 / 2, frame.data.length);
+
+      byte[] expectedNV12Bytes = new byte[frame.data.length];
+      FileVideoCapturer.nativeI420ToNV21(expectedFrames[i].getBytes(StandardCharsets.US_ASCII),
+          FRAME_WIDTH, FRAME_HEIGHT, expectedNV12Bytes);
+
+      assertTrue(Arrays.equals(expectedNV12Bytes, frame.data));
+    }
+  }
+}