Add RTP VP9 Reader Test

libraries/exoplayer_rtsp/src/test/java/androidx/media3/exoplayer/rtsp/reader/RtpVp9ReaderTest.java

@@ -0,0 +1,179 @@
+/*
+ * 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 androidx.media3.exoplayer.rtsp.reader;
+
+import static androidx.media3.common.util.Util.getBytesFromHexString;
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.when;
+
+import androidx.media3.common.Format;
+import androidx.media3.common.MimeTypes;
+import androidx.media3.common.util.ParsableByteArray;
+import androidx.media3.exoplayer.rtsp.RtpPacket;
+import androidx.media3.exoplayer.rtsp.RtpPayloadFormat;
+import androidx.media3.extractor.ExtractorOutput;
+import androidx.media3.test.utils.FakeTrackOutput;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import com.google.common.collect.ImmutableMap;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+
+/**
+ * Unit test for {@link RtpVp9Reader}.
+ */
+@RunWith(AndroidJUnit4.class)
+public final class RtpVp9ReaderTest {
+
+  private final RtpPacket frame1fragment1 =
+      createRtpPacket(
+          /* timestamp= */ 2599168056L,
+          /* sequenceNumber= */ 40289,
+          /* marker= */ false,
+          /* payloadData= */ getBytesFromHexString("08000102030405060708090A"));
+  private final RtpPacket frame1fragment2 =
+      createRtpPacket(
+          /* timestamp= */ 2599168056L,
+          /* sequenceNumber= */ 40290,
+          /* marker= */ true,
+          /* payloadData= */ getBytesFromHexString("000B0C0D0E"));
+  private final byte[] frame1Data = getBytesFromHexString("000102030405060708090A0B0C0D0E");
+  private final RtpPacket frame2fragment1 =
+      createRtpPacket(
+          /* timestamp= */ 2599168344L,
+          /* sequenceNumber= */ 40291,
+          /* marker= */ false,
+          /* payloadData= */ getBytesFromHexString("080D0C0B0A090807060504"));
+  // Add optional headers
+  private final RtpPacket frame2fragment2 =
+      createRtpPacket(
+          /* timestamp= */ 2599168344L,
+          /* sequenceNumber= */ 40292,
+          /* marker= */ true,
+          /* payloadData= */ getBytesFromHexString("0003020100"));
+  private final byte[] frame2Data = getBytesFromHexString("0D0C0B0A09080706050403020100");
+
+  private static final RtpPayloadFormat VP9_FORMAT =
+      new RtpPayloadFormat(
+          new Format.Builder()
+              .setSampleMimeType(MimeTypes.VIDEO_VP9)
+              .build(),
+          /* rtpPayloadType= */ 98,
+          /* clockRate= */ 48_000,
+          /* fmtpParameters= */ ImmutableMap.of());
+
+  @Rule
+  public final MockitoRule mockito = MockitoJUnit.rule();
+
+  private ParsableByteArray packetData;
+
+  private RtpVp9Reader vp9Reader;
+  private FakeTrackOutput trackOutput;
+  @Mock
+  private ExtractorOutput extractorOutput;
+
+  @Before
+  public void setUp() {
+    packetData = new ParsableByteArray();
+    trackOutput = new FakeTrackOutput(/* deduplicateConsecutiveFormats= */ true);
+    when(extractorOutput.track(anyInt(), anyInt())).thenReturn(trackOutput);
+    vp9Reader = new RtpVp9Reader(VP9_FORMAT);
+    vp9Reader.createTracks(extractorOutput, /* trackId= */ 0);
+  }
+
+  @Test
+  public void consume_validPackets() {
+    vp9Reader.onReceivingFirstPacket(frame1fragment1.timestamp, frame1fragment1.sequenceNumber);
+    consume(frame1fragment1);
+    consume(frame1fragment2);
+    consume(frame2fragment1);
+    consume(frame2fragment2);
+
+    assertThat(trackOutput.getSampleCount()).isEqualTo(2);
+    assertThat(trackOutput.getSampleData(0)).isEqualTo(frame1Data);
+    assertThat(trackOutput.getSampleTimeUs(0)).isEqualTo(0);
+    assertThat(trackOutput.getSampleData(1)).isEqualTo(frame2Data);
+    assertThat(trackOutput.getSampleTimeUs(1)).isEqualTo(3200);
+  }
+
+  @Test
+  public void consume_fragmentedFrameMissingFirstFragment() {
+    // First packet timing information is transmitted over RTSP, not RTP.
+    vp9Reader.onReceivingFirstPacket(frame1fragment1.timestamp, frame1fragment1.sequenceNumber);
+    consume(frame1fragment2);
+    consume(frame2fragment1);
+    consume(frame2fragment2);
+
+    assertThat(trackOutput.getSampleCount()).isEqualTo(1);
+    assertThat(trackOutput.getSampleData(0)).isEqualTo(frame2Data);
+    assertThat(trackOutput.getSampleTimeUs(0)).isEqualTo(3200);
+  }
+
+  @Test
+  public void consume_fragmentedFrameMissingBoundaryFragment() {
+    vp9Reader.onReceivingFirstPacket(frame1fragment1.timestamp, frame1fragment1.sequenceNumber);
+    consume(frame1fragment1);
+    consume(frame2fragment1);
+    consume(frame2fragment2);
+
+    assertThat(trackOutput.getSampleCount()).isEqualTo(2);
+    assertThat(trackOutput.getSampleData(0))
+        .isEqualTo(getBytesFromHexString("000102030405060708090A"));
+    assertThat(trackOutput.getSampleTimeUs(0)).isEqualTo(0);
+    assertThat(trackOutput.getSampleData(1)).isEqualTo(frame2Data);
+    assertThat(trackOutput.getSampleTimeUs(1)).isEqualTo(3200);
+  }
+
+  @Test
+  public void consume_outOfOrderFragmentedFrame() {
+    vp9Reader.onReceivingFirstPacket(frame1fragment1.timestamp, frame1fragment1.sequenceNumber);
+    consume(frame1fragment1);
+    consume(frame2fragment1);
+    consume(frame1fragment2);
+    consume(frame2fragment2);
+
+    assertThat(trackOutput.getSampleCount()).isEqualTo(2);
+    assertThat(trackOutput.getSampleData(0))
+        .isEqualTo(getBytesFromHexString("000102030405060708090A"));
+    assertThat(trackOutput.getSampleTimeUs(0)).isEqualTo(0);
+    assertThat(trackOutput.getSampleData(1)).isEqualTo(frame2Data);
+    assertThat(trackOutput.getSampleTimeUs(1)).isEqualTo(3200);
+  }
+
+  private static RtpPacket createRtpPacket(
+      long timestamp, int sequenceNumber, boolean marker, byte[] payloadData) {
+    return new RtpPacket.Builder()
+        .setTimestamp((int) timestamp)
+        .setSequenceNumber(sequenceNumber)
+        .setMarker(marker)
+        .setPayloadData(payloadData)
+        .build();
+  }
+
+  private void consume(RtpPacket rtpPacket) {
+    packetData.reset(rtpPacket.payloadData);
+    vp9Reader.consume(
+        packetData,
+        rtpPacket.timestamp,
+        rtpPacket.sequenceNumber,
+        /* isFrameBoundary= */ rtpPacket.marker);
+  }
+}