Screenrecord: Make low quality bitrate scalable per device

Hack our way around that weird formula
Just devide scaled bitrate by 3 for low quality

Change-Id: I7669769ca3104b3566ed38f549af384f83d92d81

packages/SystemUI/src/com/android/systemui/screenrecord/ScreenMediaRecorder.java

@@ -71,8 +71,8 @@ public class ScreenMediaRecorder extends MediaProjection.Callback {
     private static final int TOTAL_NUM_TRACKS = 1;
     private static final int VIDEO_FRAME_RATE = 30;
     private static final int VIDEO_FRAME_RATE_TO_RESOLUTION_RATIO = 6;
+    private static final int LOW_VIDEO_FRAME_RATE_TO_RESOLUTION_RATIO = 2;
     private static final int LOW_VIDEO_FRAME_RATE = 25;
-    private static final int LOW_VIDEO_BIT_RATE = 1750000;
     private static final int AUDIO_BIT_RATE = 196000;
     private static final int AUDIO_SAMPLE_RATE = 44100;
     private static final int MAX_DURATION_MS = 60 * 60 * 1000;
@@ -162,9 +162,10 @@ public class ScreenMediaRecorder extends MediaProjection.Callback {
         int width = dimens[0];
         int height = dimens[1];
         refreshRate = dimens[2];
-        int vidBitRate = mLowQuality ? LOW_VIDEO_BIT_RATE :
-                width * height * refreshRate / VIDEO_FRAME_RATE
-                * VIDEO_FRAME_RATE_TO_RESOLUTION_RATIO;
+        int resRatio = mLowQuality ? LOW_VIDEO_FRAME_RATE_TO_RESOLUTION_RATIO
+                : VIDEO_FRAME_RATE_TO_RESOLUTION_RATIO;
+        int vidBitRate = width * height * refreshRate / VIDEO_FRAME_RATE * resRatio;
+        long maxFilesize = mLongerDuration ? MAX_FILESIZE_BYTES_LONGER : MAX_FILESIZE_BYTES;
         mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
         mMediaRecorder.setVideoEncodingProfileLevel(
                 MediaCodecInfo.CodecProfileLevel.AVCProfileMain,