Add ability to scale to arbitrary factors

webrtc/sdk/android/src/jni/androidvideotracksource.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/sdk/android/src/jni/androidvideotracksource.h"
 
 #include <utility>
 
+namespace {
+// MediaCodec wants resolution to be divisible by 2.
+const int kRequiredResolutionAlignment = 2;
+}
+
 namespace webrtc {
 
 AndroidVideoTrackSource::AndroidVideoTrackSource(rtc::Thread* signaling_thread,
                                                  JNIEnv* jni,
                                                  jobject j_egl_context,
                                                  bool is_screencast)
-    : signaling_thread_(signaling_thread),
+    : AdaptedVideoTrackSource(kRequiredResolutionAlignment),
+      signaling_thread_(signaling_thread),
       surface_texture_helper_(webrtc_jni::SurfaceTextureHelper::create(
           jni,
           "Camera SurfaceTextureHelper",
           j_egl_context)),
       is_screencast_(is_screencast) {
   LOG(LS_INFO) << "AndroidVideoTrackSource ctor";
   camera_thread_checker_.DetachFromThread();
 }
 
 void AndroidVideoTrackSource::SetState(SourceState state) {
@@ skipping 122 matching lines @@
 
 void AndroidVideoTrackSource::OnOutputFormatRequest(int width,
                                                     int height,
                                                     int fps) {
   cricket::VideoFormat format(width, height,
                               cricket::VideoFormat::FpsToInterval(fps), 0);
   video_adapter()->OnOutputFormatRequest(format);
 }
 
 }  // namespace webrtc