gt:         for (RendererCommon.ScalingType scalingType : scalingTypes) {
context: /*
   * libjingle
   * Copyright 2015 Google Inc.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   *  1. Redistributions of source code must retain the above copyright notice,
   *     this list of conditions and the following disclaimer.
   *  2. Redistributions in binary form must reproduce the above copyright notice,
   *     this list of conditions and the following disclaimer in the documentation
   *     and/or other materials provided with the distribution.
   *  3. The name of the author may not be used to endorse or promote products
   *     derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
   * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package org.webrtc;
  
  import android.graphics.Point;
  import android.test.ActivityTestCase;
  import android.test.suitebuilder.annotation.MediumTest;
  import android.view.View.MeasureSpec;
  
  import java.nio.ByteBuffer;
  import java.util.Arrays;
  import java.util.List;
  
  import javax.microedition.khronos.egl.EGL10;
  
  public final class SurfaceViewRendererOnMeasureTest extends ActivityTestCase {
    /**
     * List with all possible scaling types.
     */
    private static final List<RendererCommon.ScalingType> scalingTypes = Arrays.asList(
        RendererCommon.ScalingType.SCALE_ASPECT_FIT,
        RendererCommon.ScalingType.SCALE_ASPECT_FILL,
        RendererCommon.ScalingType.SCALE_ASPECT_BALANCED);
  
    /**
     * List with MeasureSpec modes.
     */
    private static final List<Integer> measureSpecModes =
        Arrays.asList(MeasureSpec.EXACTLY, MeasureSpec.AT_MOST);
  
    /**
     * Returns a dummy YUV frame.
     */
    static VideoRenderer.I420Frame createFrame(int width, int height, int rotationDegree) {
      final int[] yuvStrides = new int[] {width, (width + 1) / 2, (width + 1) / 2};
      final int[] yuvHeights = new int[] {height, (height + 1) / 2, (height + 1) / 2};
      final ByteBuffer[] yuvPlanes = new ByteBuffer[3];
      for (int i = 0; i < 3; ++i) {
        yuvPlanes[i] = ByteBuffer.allocateDirect(yuvStrides[i] * yuvHeights[i]);
      }
      return new VideoRenderer.I420Frame(width, height, rotationDegree, yuvStrides, yuvPlanes, 0);
    }
  
    /**
     * Assert onMeasure() with given parameters will result in expected measured size.
     */
    private static void assertMeasuredSize(
        SurfaceViewRenderer surfaceViewRenderer, RendererCommon.ScalingType scalingType,
        String frameDimensions,
        int expectedWidth, int expectedHeight,
        int widthSpec, int heightSpec) {
      surfaceViewRenderer.setScalingType(scalingType);
      surfaceViewRenderer.onMeasure(widthSpec, heightSpec);
      final int measuredWidth = surfaceViewRenderer.getMeasuredWidth();
      final int measuredHeight = surfaceViewRenderer.getMeasuredHeight();
      if (measuredWidth != expectedWidth || measuredHeight != expectedHeight) {
        fail("onMeasure("
            + MeasureSpec.toString(widthSpec) + ", " + MeasureSpec.toString(heightSpec) + ")"
            + " with scaling type " + scalingType
            + " and frame: " + frameDimensions
            + " expected measured size " + expectedWidth + "x" + expectedHeight
            + ", but was " + measuredWidth + "x" + measuredHeight);
      }
    }
  
    /**
     * Test how SurfaceViewRenderer.onMeasure() behaves when no frame has been delivered.
     */
    @MediumTest
    public void testNoFrame() {
      final SurfaceViewRenderer surfaceViewRenderer =
          new SurfaceViewRenderer(getInstrumentation().getContext());
      final String frameDimensions = "null";
  
      // Test behaviour before SurfaceViewRenderer.init() is called.
      for (RendererCommon.ScalingType scalingType : scalingTypes) {
        for (int measureSpecMode : measureSpecModes) {
          final int zeroMeasureSize = MeasureSpec.makeMeasureSpec(0, measureSpecMode);
          assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
              0, 0, zeroMeasureSize, zeroMeasureSize);
          assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
              1280, 720,
              MeasureSpec.makeMeasureSpec(1280, measureSpecMode),
              MeasureSpec.makeMeasureSpec(720, measureSpecMode));
        }
      }
  
     // Test behaviour after SurfaceViewRenderer.init() is called, but still no frame.
      surfaceViewRenderer.init(EGL10.EGL_NO_CONTEXT, null);
      for (RendererCommon.ScalingType scalingType : scalingTypes) {
        for (int measureSpecMode : measureSpecModes) {
          final int zeroMeasureSize = MeasureSpec.makeMeasureSpec(0, measureSpecMode);
          assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
              0, 0, zeroMeasureSize, zeroMeasureSize);
          assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
              1280, 720,
              MeasureSpec.makeMeasureSpec(1280, measureSpecMode),
              MeasureSpec.makeMeasureSpec(720, measureSpecMode));
        }
      }
  
      surfaceViewRenderer.release();
    }
  
    /**
     * Test how SurfaceViewRenderer.onMeasure() behaves with a 1280x720 frame.
     */
    @MediumTest
    public void testFrame1280x720() {
      final SurfaceViewRenderer surfaceViewRenderer =
          new SurfaceViewRenderer(getInstrumentation().getContext());
      surfaceViewRenderer.init(EGL10.EGL_NO_CONTEXT, null);
  
      // Test different rotation degress, but same rotated size.
      for (int rotationDegree : new int[] {0, 90, 180, 270}) {
        final int rotatedWidth = 1280;
        final int rotatedHeight = 720;
        final int unrotatedWidth = (rotationDegree % 180 == 0 ? rotatedWidth : rotatedHeight);
        final int unrotatedHeight = (rotationDegree % 180 == 0 ? rotatedHeight : rotatedWidth);
        final VideoRenderer.I420Frame frame =
            createFrame(unrotatedWidth, unrotatedHeight, rotationDegree);
        assertEquals(rotatedWidth, frame.rotatedWidth());
        assertEquals(rotatedHeight, frame.rotatedHeight());
        final String frameDimensions =
            unrotatedWidth + "x" + unrotatedHeight + " with rotation " + rotationDegree;
        surfaceViewRenderer.renderFrame(frame);
  
        // Test forcing to zero size.
        for (RendererCommon.ScalingType scalingType : scalingTypes) {
          for (int measureSpecMode : measureSpecModes) {
            final int zeroMeasureSize = MeasureSpec.makeMeasureSpec(0, measureSpecMode);
            assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
                0, 0, zeroMeasureSize, zeroMeasureSize);
          }
        }
  
        // Test perfect fit.
        for (RendererCommon.ScalingType scalingType : scalingTypes) {
          for (int measureSpecMode : measureSpecModes) {
            assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
                rotatedWidth, rotatedHeight,
                MeasureSpec.makeMeasureSpec(rotatedWidth, measureSpecMode),
                MeasureSpec.makeMeasureSpec(rotatedHeight, measureSpecMode));
          }
        }
  
        // Force spec size with different aspect ratio than frame aspect ratio.
        for (RendererCommon.ScalingType scalingType : scalingTypes) {
          assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
              720, 1280,
              MeasureSpec.makeMeasureSpec(720, MeasureSpec.EXACTLY),
              MeasureSpec.makeMeasureSpec(1280, MeasureSpec.EXACTLY));
        }
  
        final float videoAspectRatio = (float) rotatedWidth / rotatedHeight;
        {
          // Relax both width and height constraints.
          final int widthSpec = MeasureSpec.makeMeasureSpec(720, MeasureSpec.AT_MOST);
          final int heightSpec = MeasureSpec.makeMeasureSpec(1280, MeasureSpec.AT_MOST);
          for (RendererCommon.ScalingType scalingType : scalingTypes) {
            final Point expectedSize =
                RendererCommon.getDisplaySize(scalingType, videoAspectRatio, 720, 1280);
            assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
                    expectedSize.x, expectedSize.y, widthSpec, heightSpec);
          }
        }
        {
          // Force width to 720, but relax height constraint. This will give the same result as
          // above, because width is already the limiting factor and will be maxed out.
          final int widthSpec = MeasureSpec.makeMeasureSpec(720, MeasureSpec.EXACTLY);
          final int heightSpec = MeasureSpec.makeMeasureSpec(1280, MeasureSpec.AT_MOST);
          for (RendererCommon.ScalingType scalingType : scalingTypes) {
            final Point expectedSize =
                RendererCommon.getDisplaySize(scalingType, videoAspectRatio, 720, 1280);
            assertMeasuredSize(surfaceViewRenderer, scalingType, frameDimensions,
                    expectedSize.x, expectedSize.y, widthSpec, heightSpec);
          }
        }
        {
          // Force height, but relax width constraint. This will force a bad layout size.
          final int widthSpec = MeasureSpec.makeMeasureSpec(720, MeasureSpec.AT_MOST);
          final int heightSpec = MeasureSpec.makeMeasureSpec(1280, MeasureSpec.EXACTLY);
  