Stop double-encoding CMCD query parameters

`Uri.appendQueryParameter` is documented to encode its arguments, so
calling `Uri.encode` beforehand results in double-encoding.

Issue: #1075

#minor-release

PiperOrigin-RevId: 604995441
(cherry picked from commit 7ebfed5)

Author: icbaker

RELEASENOTES.md

@@ -10,6 +10,8 @@
     *   Fix the regex used for validating custom Common Media Client Data (CMCD)
         key names by modifying it to only check for hyphen
         ([#1028](https://github.com/androidx/media/issues/1028)).
+    *   Stop double-encoding CMCD query parameters
+        ([#1075](https://github.com/androidx/media/issues/1075)).
 *   Transformer:
 *   Track Selection:
 *   Extractors:

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/upstream/CmcdData.java

@@ -417,8 +417,7 @@ public DataSpec addToDataSpec(DataSpec dataSpec) {
               .uri
               .buildUpon()
               .appendQueryParameter(
-                  CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY,
-                  Uri.encode(COMMA_JOINER.join(keyValuePairs)));
+                  CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY, COMMA_JOINER.join(keyValuePairs));
       return dataSpec.buildUpon().setUri(uriBuilder.build()).build();
     }
   }

libraries/exoplayer/src/test/java/androidx/media3/exoplayer/upstream/CmcdDataTest.java

@@ -108,7 +108,7 @@ public void createInstance_populatesCmcdHttpQueryParameters() {
                       getCustomData() {
                     return new ImmutableListMultimap.Builder<String, String>()
                         .put("CMCD-Object", "key-1=1")
-                        .put("CMCD-Request", "key-2=\"stringValue1,stringValue2\"")
+                        .put("CMCD-Request", "key-2=\"stringVälue1,stringVälue2\"")
                         .build();
                   }
 
@@ -143,11 +143,13 @@ public int getRequestedMaximumThroughputKbps(int throughputKbps) {
 
     dataSpec = cmcdData.addToDataSpec(dataSpec);
 
-    assertThat(
-            Uri.decode(dataSpec.uri.getQueryParameter(CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY)))
+    // Confirm that the values above are URL-encoded
+    assertThat(dataSpec.uri.toString()).doesNotContain("ä");
+    assertThat(dataSpec.uri.toString()).contains(Uri.encode("ä"));
+    assertThat(dataSpec.uri.getQueryParameter(CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY))
         .isEqualTo(
             "bl=1800,br=840,bs,cid=\"mediaId\",d=3000,dl=900,key-1=1,"
-                + "key-2=\"stringValue1,stringValue2\",mtp=500,pr=2.00,rtp=1700,sf=d,"
+                + "key-2=\"stringVälue1,stringVälue2\",mtp=500,pr=2.00,rtp=1700,sf=d,"
                 + "sid=\"sessionId\",st=l,su,tb=1000");
   }
 

libraries/exoplayer_dash/src/test/java/androidx/media3/exoplayer/dash/DefaultDashChunkSourceTest.java

@@ -532,9 +532,7 @@ public int getRequestedMaximumThroughputKbps(int throughputKbps) {
         output);
 
     assertThat(
-            Uri.decode(
-                output.chunk.dataSpec.uri.getQueryParameter(
-                    CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY)))
+            output.chunk.dataSpec.uri.getQueryParameter(CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY))
         .isEqualTo(
             "bl=0,br=700,cid=\"mediaId\",com.example.test-key-1=1,d=4000,dl=0,"
                 + "key-2=\"stringValue\",mtp=1000,nor=\"..%2Fvideo_4000_700000.m4s\",nrr=\"0-\","

libraries/exoplayer_hls/src/test/java/androidx/media3/exoplayer/hls/HlsChunkSourceTest.java

@@ -442,9 +442,7 @@ public int getRequestedMaximumThroughputKbps(int throughputKbps) {
         output);
 
     assertThat(
-            Uri.decode(
-                output.chunk.dataSpec.uri.getQueryParameter(
-                    CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY)))
+            output.chunk.dataSpec.uri.getQueryParameter(CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY))
         .isEqualTo(
             "bl=0,br=800,cid=\"mediaId\",com.example.test-key-1=1,d=4000,dl=0,"
                 + "key-2=\"stringValue\",nor=\"..%2F3.mp4\",nrr=\"0-\",ot=v,sf=h,"

libraries/exoplayer_smoothstreaming/src/test/java/androidx/media3/exoplayer/smoothstreaming/DefaultSsChunkSourceTest.java

@@ -283,9 +283,7 @@ public int getRequestedMaximumThroughputKbps(int throughputKbps) {
         output);
 
     assertThat(
-            Uri.decode(
-                output.chunk.dataSpec.uri.getQueryParameter(
-                    CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY)))
+            output.chunk.dataSpec.uri.getQueryParameter(CmcdConfiguration.CMCD_QUERY_PARAMETER_KEY))
         .isEqualTo(
             "bl=0,br=308,cid=\"mediaId\",com.example.test-key-1=1,d=1968,dl=0,"
                 + "key-2=\"stringValue\",mtp=1000,nor=\"..%2FFragments(video%3D19680000)\",ot=v,"