/*
 * Copyright 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.android.exoplayer2.transformer.mh;

import static com.google.common.truth.Truth.assertThat;

import android.content.Context;
import androidx.test.core.app.ApplicationProvider;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import com.google.android.exoplayer2.transformer.AndroidTestUtil;
import com.google.android.exoplayer2.transformer.TransformationRequest;
import com.google.android.exoplayer2.transformer.TransformationTestResult;
import com.google.android.exoplayer2.transformer.Transformer;
import com.google.android.exoplayer2.transformer.TransformerAndroidTestRunner;
import com.google.android.exoplayer2.util.MimeTypes;
import org.junit.Test;
import org.junit.runner.RunWith;

/** Checks transcoding quality. */
@RunWith(AndroidJUnit4.class)
public final class TranscodeQualityTest {
  @Test
  public void singleTranscode_ssimIsGreaterThan90Percent() throws Exception {
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer =
        new Transformer.Builder(context)
            .setTransformationRequest(
                new TransformationRequest.Builder().setVideoMimeType(MimeTypes.VIDEO_H265).build())
            .setRemoveAudio(true)
            .build();

    TransformationTestResult result =
        new TransformerAndroidTestRunner.Builder(context, transformer)
            .setCalculateSsim(true)
            .build()
            .run(/* testId= */ "singleTranscode_ssim", AndroidTestUtil.MP4_ASSET_URI_STRING);

    assertThat(result.ssim).isGreaterThan(0.90);
  }
}

/*
 * Copyright 2022 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.android.exoplayer2.transformer.mh;

import static com.google.common.truth.Truth.assertThat;

import android.content.Context;
import androidx.test.core.app.ApplicationProvider;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import com.google.android.exoplayer2.transformer.AndroidTestUtil;
import com.google.android.exoplayer2.transformer.TransformationRequest;
import com.google.android.exoplayer2.transformer.TransformationTestResult;
import com.google.android.exoplayer2.transformer.Transformer;
import com.google.android.exoplayer2.transformer.TransformerAndroidTestRunner;
import com.google.android.exoplayer2.util.MimeTypes;
import org.junit.Test;
import org.junit.runner.RunWith;

/** Checks transcoding quality. */
@RunWith(AndroidJUnit4.class)
public final class TranscodeQualityTest {
  // TODO(b/228455984) Add test that calculates SSIM for transcoding to H265.
  @Test
  public void transformWithDecodeEncode_ssimIsGreaterThan90Percent() throws Exception {
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer =
        new Transformer.Builder(context)
            .setTransformationRequest(
                new TransformationRequest.Builder().setVideoMimeType(MimeTypes.VIDEO_H264).build())
            .setEncoderFactory(AndroidTestUtil.FORCE_ENCODE_ENCODER_FACTORY)
            .setRemoveAudio(true)
            .build();

    TransformationTestResult result =
        new TransformerAndroidTestRunner.Builder(context, transformer)
            .setCalculateSsim(true)
            .build()
            .run(/* testId= */ "singleTranscode_ssim", AndroidTestUtil.MP4_ASSET_URI_STRING);

    assertThat(result.ssim).isGreaterThan(0.90);
  }
}

Change SSIM transcode MIME type to H264.