Handle when additional spaces are in SDP's RTPMAP atrribute

Issue: #9379
PiperOrigin-RevId: 395226701

RELEASENOTES.md

@@ -18,6 +18,9 @@
         thrown from `Requirements.isInternetConnectivityValidated` on devices
         running Android 11
         ([#9002](https://github.com/google/ExoPlayer/issues/9002)).
+*   RTSP:
+    *   Handle when additional spaces are in SDP's RTPMAP atrribute
+        ([#9379](https://github.com/google/ExoPlayer/issues/9379)).
 *   UI:
     *   Use `defStyleAttr` when obtaining styled attributes in
         `StyledPlayerView`, `PlayerView` and `PlayerControlView`

library/rtsp/src/main/java/com/google/android/exoplayer2/source/rtsp/MediaDescription.java

@@ -43,11 +43,11 @@ import java.util.HashMap;
 
     /** Parses the RTPMAP attribute value (with the part "a=rtpmap:" removed). */
     public static RtpMapAttribute parse(String rtpmapString) throws ParserException {
-      String[] rtpmapInfo = Util.split(rtpmapString, " ");
+      String[] rtpmapInfo = Util.splitAtFirst(rtpmapString, " ");
       checkArgument(rtpmapInfo.length == 2);
       int payloadType = parseInt(rtpmapInfo[0]);
 
-      String[] mediaInfo = Util.split(rtpmapInfo[1], "/");
+      String[] mediaInfo = Util.split(rtpmapInfo[1].trim(), "/");
       checkArgument(mediaInfo.length >= 2);
       int clockRate = parseInt(mediaInfo[1]);
       int encodingParameters = C.INDEX_UNSET;

library/rtsp/src/main/java/com/google/android/exoplayer2/source/rtsp/RtspMediaTrack.java

@@ -18,7 +18,6 @@ package com.google.android.exoplayer2.source.rtsp;
 import static com.google.android.exoplayer2.source.rtsp.MediaDescription.MEDIA_TYPE_AUDIO;
 import static com.google.android.exoplayer2.source.rtsp.RtpPayloadFormat.getMimeTypeFromRtpMediaType;
 import static com.google.android.exoplayer2.source.rtsp.SessionDescription.ATTR_CONTROL;
-import static com.google.android.exoplayer2.source.rtsp.SessionDescription.ATTR_RTPMAP;
 import static com.google.android.exoplayer2.util.Assertions.checkArgument;
 import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
 import static com.google.android.exoplayer2.util.NalUnitUtil.NAL_START_CODE;
@@ -95,13 +94,6 @@ import com.google.common.collect.ImmutableMap;
       formatBuilder.setAverageBitrate(mediaDescription.bitrate);
     }
 
-    // rtpmap is mandatory in an RTSP session with dynamic payload types (RFC2326 Section C.1.3).
-    checkArgument(mediaDescription.attributes.containsKey(ATTR_RTPMAP));
-    String rtpmapAttribute = castNonNull(mediaDescription.attributes.get(ATTR_RTPMAP));
-
-    // rtpmap string format: RFC2327 Page 22.
-    String[] rtpmap = Util.split(rtpmapAttribute, " ");
-    checkArgument(rtpmap.length == 2);
     int rtpPayloadType = mediaDescription.rtpMapAttribute.payloadType;
 
     String mimeType = getMimeTypeFromRtpMediaType(mediaDescription.rtpMapAttribute.mediaEncoding);

library/rtsp/src/test/java/com/google/android/exoplayer2/source/rtsp/SessionDescriptionTest.java

@@ -192,6 +192,25 @@ public class SessionDescriptionTest {
   }
 
   @Test
+  public void parse_sdpStringWithExtraSpaceInRtpMapAttribute_succeeds() throws Exception {
+    String testMediaSdpInfo =
+        "v=0\r\n"
+            + "o=MNobody 2890844526 2890842807 IN IP4 192.0.2.46\r\n"
+            + "s=SDP Seminar\r\n"
+            + "t=0 0\r\n"
+            + "a=control:*\r\n"
+            + "m=audio 3456 RTP/AVP 0\r\n"
+            + "a=rtpmap:97 AC3/44100  \r\n";
+
+    SessionDescription sessionDescription = SessionDescriptionParser.parse(testMediaSdpInfo);
+    MediaDescription.RtpMapAttribute rtpMapAttribute =
+        sessionDescription.mediaDescriptionList.get(0).rtpMapAttribute;
+    assertThat(rtpMapAttribute.payloadType).isEqualTo(97);
+    assertThat(rtpMapAttribute.mediaEncoding).isEqualTo("AC3");
+    assertThat(rtpMapAttribute.clockRate).isEqualTo(44100);
+  }
+
+  @Test
   public void buildMediaDescription_withInvalidRtpmapAttribute_throwsIllegalStateException() {
     assertThrows(
         IllegalStateException.class,