Added Rtp Mp4a-Latm Reader Test

Change-Id: I0054e54183df0bb9370bf3fe7047076e285e1e8f

libraries/exoplayer_rtsp/src/test/java/androidx/media3/exoplayer/rtsp/reader/RtpMp4aReaderTest.java

+/*
+ * 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 androidx.media3.common.Format;
+import androidx.media3.common.MimeTypes;
+import androidx.media3.common.ParserException;
+import androidx.media3.common.util.ParsableByteArray;
+import androidx.media3.exoplayer.rtsp.RtpPacket;
+import androidx.media3.exoplayer.rtsp.RtpPayloadFormat;
+import androidx.media3.test.utils.FakeExtractorOutput;
+import androidx.media3.test.utils.FakeTrackOutput;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.primitives.Bytes;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+
+/** Unit test for {@link RtpMp4aReader}. */
+@RunWith(AndroidJUnit4.class)
+public final class RtpMp4aReaderTest {
+  private static final byte[] FRAME_1_FRAGMENT_1_DATA =
+      getBytesFromHexString("0102");
+  private static final RtpPacket FRAME_1_FRAGMENT_1 =
+      new RtpPacket.Builder()
+          .setTimestamp((int) 2599168056L)
+          .setSequenceNumber(40289)
+          .setMarker(false)
+          .setPayloadData(Bytes.concat(
+              /*payload size */ getBytesFromHexString("02"), FRAME_1_FRAGMENT_1_DATA))
+          .build();
+  private static final byte[] FRAME_1_FRAGMENT_2_DATA =
+      getBytesFromHexString("030405");
+  private static final RtpPacket FRAME_1_FRAGMENT_2 =
+      new RtpPacket.Builder()
+          .setTimestamp((int) 2599168056L)
+          .setSequenceNumber(40290)
+          .setMarker(true)
+          .setPayloadData(Bytes.concat(
+              /*payload size */ getBytesFromHexString("03"), FRAME_1_FRAGMENT_2_DATA))
+          .build();
+  private static final byte[] FRAME_1_DATA =
+      Bytes.concat(FRAME_1_FRAGMENT_1_DATA, FRAME_1_FRAGMENT_2_DATA);
+
+  private static final byte[] FRAME_2_FRAGMENT_1_DATA =
+      getBytesFromHexString("0607");
+  private static final RtpPacket FRAME_2_FRAGMENT_1 =
+      new RtpPacket.Builder()
+          .setTimestamp((int) 2599168344L)
+          .setSequenceNumber(40291)
+          .setMarker(false)
+          .setPayloadData(Bytes.concat(
+              /*payload size */ getBytesFromHexString("02"), FRAME_2_FRAGMENT_1_DATA))
+          .build();
+  private static final byte[] FRAME_2_FRAGMENT_2_DATA =
+      getBytesFromHexString("0809");
+  private static final RtpPacket FRAME_2_FRAGMENT_2 =
+      new RtpPacket.Builder()
+          .setTimestamp((int) 2599168344L)
+          .setSequenceNumber(40292)
+          .setMarker(true)
+          .setPayloadData(Bytes.concat(
+              /*payload size */ getBytesFromHexString("02"), FRAME_2_FRAGMENT_2_DATA))
+          .build();
+  private static final byte[] FRAME_2_DATA =
+      Bytes.concat(FRAME_2_FRAGMENT_1_DATA, FRAME_2_FRAGMENT_2_DATA);
+
+  private static final RtpPayloadFormat MP4ALATM_FORMAT =
+      new RtpPayloadFormat(
+          new Format.Builder()
+              .setSampleMimeType(MimeTypes.AUDIO_AAC)
+              .setWidth(352)
+              .setHeight(288)
+              .build(),
+          /* rtpPayloadType= */ 96,
+          /* clockRate= */ 90_000,
+          /* fmtpParameters= */ ImmutableMap.of(), RtpPayloadFormat.RTP_MEDIA_MPEG4_AUDIO);
+
+  @Rule public final MockitoRule mockito = MockitoJUnit.rule();
+
+  private FakeTrackOutput trackOutput;
+
+  private FakeExtractorOutput extractorOutput;
+
+  @Before
+  public void setUp() {
+    extractorOutput = new FakeExtractorOutput();
+  }
+
+  @Test
+  public void consume_validPackets() throws ParserException {
+    RtpMp4aReader mp4aLatmReader = new RtpMp4aReader(MP4ALATM_FORMAT);
+    mp4aLatmReader.createTracks(extractorOutput, /* trackId= */ 0);
+    mp4aLatmReader.onReceivingFirstPacket(
+        FRAME_1_FRAGMENT_1.timestamp, FRAME_1_FRAGMENT_1.sequenceNumber);
+    consume(mp4aLatmReader, FRAME_1_FRAGMENT_1);
+    consume(mp4aLatmReader, FRAME_1_FRAGMENT_2);
+    consume(mp4aLatmReader, FRAME_2_FRAGMENT_1);
+    consume(mp4aLatmReader, FRAME_2_FRAGMENT_2);
+
+    trackOutput = extractorOutput.trackOutputs.get(0);
+    assertThat(trackOutput.getSampleCount()).isEqualTo(2);
+    assertThat(trackOutput.getSampleData(0)).isEqualTo(FRAME_1_DATA);
+    assertThat(trackOutput.getSampleTimeUs(0)).isEqualTo(0);
+    assertThat(trackOutput.getSampleData(1)).isEqualTo(FRAME_2_DATA);
+    assertThat(trackOutput.getSampleTimeUs(1)).isEqualTo(3200);
+  }
+
+  @Test
+  public void consume_fragmentedFrameMissingFirstFragment() throws ParserException {
+    RtpMp4aReader mp4aLatmReader = new RtpMp4aReader(MP4ALATM_FORMAT);
+    mp4aLatmReader.createTracks(extractorOutput, /* trackId= */ 0);
+    mp4aLatmReader.onReceivingFirstPacket(
+        FRAME_1_FRAGMENT_1.timestamp, FRAME_1_FRAGMENT_1.sequenceNumber);
+    consume(mp4aLatmReader, FRAME_1_FRAGMENT_2);
+    consume(mp4aLatmReader, FRAME_2_FRAGMENT_1);
+    consume(mp4aLatmReader, FRAME_2_FRAGMENT_2);
+
+    trackOutput = extractorOutput.trackOutputs.get(0);
+    assertThat(trackOutput.getSampleCount()).isEqualTo(2);
+    assertThat(trackOutput.getSampleData(0)).isEqualTo(FRAME_1_FRAGMENT_2_DATA);
+    assertThat(trackOutput.getSampleTimeUs(0)).isEqualTo(0);
+    assertThat(trackOutput.getSampleData(1)).isEqualTo(FRAME_2_DATA);
+    assertThat(trackOutput.getSampleTimeUs(1)).isEqualTo(3200);
+  }
+
+  @Test
+  public void consume_fragmentedFrameMissingBoundaryFragment() throws ParserException {
+    RtpMp4aReader mp4aLatmReader = new RtpMp4aReader(MP4ALATM_FORMAT);
+    mp4aLatmReader.createTracks(extractorOutput, /* trackId= */ 0);
+    mp4aLatmReader.onReceivingFirstPacket(
+        FRAME_1_FRAGMENT_1.timestamp, FRAME_1_FRAGMENT_1.sequenceNumber);
+    consume(mp4aLatmReader, FRAME_1_FRAGMENT_1);
+    consume(mp4aLatmReader, FRAME_2_FRAGMENT_1);
+    consume(mp4aLatmReader, FRAME_2_FRAGMENT_2);
+
+    trackOutput = extractorOutput.trackOutputs.get(0);
+    assertThat(trackOutput.getSampleCount()).isEqualTo(2);
+    assertThat(trackOutput.getSampleData(0)).isEqualTo(FRAME_1_FRAGMENT_1_DATA);
+    assertThat(trackOutput.getSampleTimeUs(0)).isEqualTo(0);
+    assertThat(trackOutput.getSampleData(1)).isEqualTo(FRAME_2_DATA);
+    assertThat(trackOutput.getSampleTimeUs(1)).isEqualTo(3200);
+  }
+
+  private static void consume(RtpMp4aReader mpeg4Reader, RtpPacket rtpPacket)
+      throws ParserException {
+    ParsableByteArray packetData = new ParsableByteArray();
+    packetData.reset(rtpPacket.payloadData);
+    mpeg4Reader.consume(
+        packetData,
+        rtpPacket.timestamp,
+        rtpPacket.sequenceNumber,
+        /* isFrameBoundary= */ rtpPacket.marker);
+  }
+}
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