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/*
* Copyright (C) 2024 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 android.mediav2.cts;
import static android.mediav2.common.cts.DecodeStreamToYuv.getImage;
import static android.mediav2.common.cts.DecodeStreamToYuv.unWrapYUVImage;
import static android.mediav2.common.cts.VideoErrorManager.computeFrameVariance;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import android.graphics.ImageFormat;
import android.media.Image;
import android.media.MediaCodec;
import android.media.MediaFormat;
import android.mediav2.common.cts.CodecDecoderTestBase;
import android.mediav2.common.cts.ImageSurface;
import android.mediav2.common.cts.OutputManager;
import android.util.Log;
import android.util.Pair;
import org.junit.Assume;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Locale;
import java.util.Map;
/**
* The test verifies if film grain effect is applied to the output of av1 decoder.
* <p>
* An av1 test clip with film grain enabled is decoded using av1 decoders present on the device.
* For a select few frames, their variance is computed. This metric is compared against a
* reference variance value which is obtained by decoding the same clip with film grain filter
* disabled. The test value is expected to be larger than the reference value by a threshold margin.
*/
@RunWith(Parameterized.class)
public class Av1FilmGrainValidationTest extends CodecDecoderTestBase {
private static final String LOG_TAG = Av1FilmGrainValidationTest.class.getSimpleName();
private static final String MEDIA_DIR = WorkDir.getMediaDirString();
private static final double TOLERANCE = 0.95;
private static class FrameMetadata {
public final int mFrameIndex;
public final double mVarWithoutFilmGrain;
public final double mVarWithFilmGrain;
FrameMetadata(int frameIndex, double varWithoutFilmGrain, double varWithFilmGrain) {
mFrameIndex = frameIndex;
mVarWithoutFilmGrain = varWithoutFilmGrain;
mVarWithFilmGrain = varWithFilmGrain;
}
}
private final Map<Integer, FrameMetadata> mFrameVarList;
public Av1FilmGrainValidationTest(String decoder, String mediaType, String testFile,
Map<Integer, FrameMetadata> frameVarList, String allTestParams) {
super(decoder, mediaType, MEDIA_DIR + testFile, allTestParams);
mFrameVarList = frameVarList;
}
@Parameterized.Parameters(name = "{index}_{0}_{1}")
public static Collection<Object[]> input() {
final List<Object[]> exhaustiveArgsList = new ArrayList<>(Arrays.asList(new Object[][]{
{MediaFormat.MIMETYPE_VIDEO_AV1, "crowd_run_854x480_1mbps_av1_40fg.mp4",
Map.ofEntries(
Map.entry(3, new FrameMetadata(3, 2385.037126, 2417.27729)),
Map.entry(10, new FrameMetadata(10, 2342.782887, 2384.061935)),
Map.entry(55, new FrameMetadata(55, 2204.930969, 2240.242686)),
Map.entry(70, new FrameMetadata(70, 2286.123113, 2319.397801)),
Map.entry(92, new FrameMetadata(92, 2365.240550, 2396.21792)),
Map.entry(122, new FrameMetadata(122, 2253.176403, 2287.724775)),
Map.entry(131, new FrameMetadata(131, 2144.242954, 2177.774318)),
Map.entry(139, new FrameMetadata(139, 2158.459979, 2191.296022)),
Map.entry(151, new FrameMetadata(151, 2180.469236, 2214.399074)),
Map.entry(169, new FrameMetadata(169, 2356.567787, 2390.686406)),
Map.entry(174, new FrameMetadata(174, 2360.921796, 2391.112868)),
Map.entry(178, new FrameMetadata(178, 2398.315402, 2432.657012)),
Map.entry(202, new FrameMetadata(202, 2492.972204, 2523.962709)),
Map.entry(209, new FrameMetadata(209, 2527.618761, 2563.03917)),
Map.entry(216, new FrameMetadata(216, 2451.719897, 2483.775592)),
Map.entry(240, new FrameMetadata(240, 2480.633388, 2520.155191)),
Map.entry(273, new FrameMetadata(273, 2574.790839, 2607.216427)),
Map.entry(277, new FrameMetadata(277, 2556.909117, 2590.407241)),
Map.entry(278, new FrameMetadata(278, 2532.411330, 2567.341203)),
Map.entry(280, new FrameMetadata(280, 2381.975912, 2417.329294)),
Map.entry(285, new FrameMetadata(285, 2530.698041, 2560.922845)),
Map.entry(302, new FrameMetadata(302, 2433.898254, 2464.906672)),
Map.entry(304, new FrameMetadata(304, 2346.091436, 2384.606821)),
Map.entry(311, new FrameMetadata(311, 2391.406914, 2421.758312)),
Map.entry(341, new FrameMetadata(341, 2356.578383, 2390.325355)),
Map.entry(343, new FrameMetadata(343, 2484.964095, 2515.606202)),
Map.entry(351, new FrameMetadata(351, 2511.545498, 2544.680129)),
Map.entry(386, new FrameMetadata(386, 2510.254054, 2541.890124)),
Map.entry(408, new FrameMetadata(408, 2511.183279, 2545.874258)),
Map.entry(424, new FrameMetadata(424, 2563.492336, 2598.342548))
)},
}));
return prepareParamList(exhaustiveArgsList, false, false, true, false);
}
protected void dequeueOutput(int bufferIndex, MediaCodec.BufferInfo info) {
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
mSawOutputEOS = true;
}
if (ENABLE_LOGS) {
Log.v(LOG_TAG, "output: id: " + bufferIndex + " flags: " + info.flags + " size: "
+ info.size + " timestamp: " + info.presentationTimeUs);
}
if (info.size > 0 && (info.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) == 0) {
mOutputBuff.saveOutPTS(info.presentationTimeUs);
mOutputCount++;
}
mCodec.releaseOutputBuffer(bufferIndex, mSurface != null);
if (info.size > 0) {
try (Image image = mImageSurface.getImage(1000)) {
assertNotNull("no image received from surface \n" + mTestConfig + mTestEnv, image);
if (mFrameVarList.containsKey(mOutputCount - 1)) {
MediaFormat format = getOutputFormat();
ArrayList<byte[]> data = unWrapYUVImage(getImage(image));
Pair<Double, Integer> var =
computeFrameVariance(getWidth(format), getHeight(format), data.get(0));
double frameVariance = var.first / var.second;
FrameMetadata metadata = mFrameVarList.get(mOutputCount - 1);
double refVariance = metadata.mVarWithoutFilmGrain + (
(metadata.mVarWithFilmGrain - metadata.mVarWithoutFilmGrain)
* TOLERANCE);
String msg = String.format(Locale.getDefault(),
"FilmGrain filter not applied. For frame %d, received variance %f, "
+ "expected min variance %f, no-filmgrain ref variance %f, "
+ "film grain ref variance %f \n",
metadata.mFrameIndex, frameVariance, refVariance,
metadata.mVarWithoutFilmGrain, metadata.mVarWithFilmGrain);
assertTrue(msg + mTestConfig + mTestEnv, frameVariance >= refVariance);
}
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
/**
* Check description of class {@link Av1FilmGrainValidationTest}
*/
@Test
public void testAv1FilmGrainRequirement() throws Exception {
Assume.assumeTrue("Skipping, Only intended for devices with SDK >= 202404",
BOARD_FIRST_SDK_IS_AT_LEAST_202404);
MediaFormat format = setUpSource(mTestFile);
mImageSurface = new ImageSurface();
setUpSurface(getWidth(format), getHeight(format), ImageFormat.YUV_420_888, 1, 0, null);
mOutputBuff = new OutputManager();
mCodec = MediaCodec.createByCodecName(mCodecName);
configureCodec(format, true, true, false);
mCodec.start();
doWork(Integer.MAX_VALUE);
queueEOS();
waitForAllOutputs();
mCodec.stop();
mCodec.release();
mExtractor.release();
}
}
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