Upgrade extensions NDK version

Issue:#8581
PiperOrigin-RevId: 357563419

RELEASENOTES.md

@@ -7,6 +7,14 @@
 *   Audio:
     *   Fix `SimpleExoPlayer` reporting audio session ID as 0 in some cases
         ([#8585](https://github.com/google/ExoPlayer/issues/8585)).
+*   VP9 extension: Update to use NDK r22
+    ([#8581](https://github.com/google/ExoPlayer/issues/8581)).
+*   FLAC extension: Update to use NDK r22
+    ([#8581](https://github.com/google/ExoPlayer/issues/8581)).
+*   Opus extension: Update to use NDK r22
+    ([#8581](https://github.com/google/ExoPlayer/issues/8581)).
+*   FFmpeg extension: Update to use NDK r22
+    ([#8581](https://github.com/google/ExoPlayer/issues/8581)).
 
 ### 2.13.1 (2021-02-12)
 

extensions/ffmpeg/README.md

@@ -30,7 +30,7 @@ FFMPEG_EXT_PATH="${EXOPLAYER_ROOT}/extensions/ffmpeg/src/main"
 ```
 
 * Download the [Android NDK][] and set its location in a shell variable.
-  This build configuration has been tested on NDK r20.
+  This build configuration has been tested on NDK r22.
 
 ```
 NDK_PATH="<path to Android NDK>"

extensions/flac/README.md

@@ -29,7 +29,7 @@ FLAC_EXT_PATH="${EXOPLAYER_ROOT}/extensions/flac/src/main"
 ```
 
 * Download the [Android NDK][] and set its location in an environment variable.
-  This build configuration has been tested on NDK r20.
+  This build configuration has been tested on NDK r22.
 
 ```
 NDK_PATH="<path to Android NDK>"

extensions/opus/README.md

@@ -29,7 +29,7 @@ OPUS_EXT_PATH="${EXOPLAYER_ROOT}/extensions/opus/src/main"
 ```
 
 * Download the [Android NDK][] and set its location in an environment variable.
-  This build configuration has been tested on NDK r20.
+  This build configuration has been tested on NDK r22.
 
 ```
 NDK_PATH="<path to Android NDK>"

extensions/vp9/README.md

@@ -29,7 +29,7 @@ VP9_EXT_PATH="${EXOPLAYER_ROOT}/extensions/vp9/src/main"
 ```
 
 * Download the [Android NDK][] and set its location in an environment variable.
-  This build configuration has been tested on NDK r20.
+  This build configuration has been tested on NDK r22.
 
 ```
 NDK_PATH="<path to Android NDK>"