youtobe導致功耗變大的解決方法
在測試功耗的時候，發現youtobe應用會導致功耗變大，下面介紹下解決方法：
1：首先可以調整最大背光亮度，將最大值從255調整為245.經過驗證分析這種變動使用者無法察覺，但是將會降低功耗。
private static final void initCodecList() { synchronized (sInitLock) { if (sRegularCodecInfos == null) { int count = native_getCodecCount(); ArrayList<MediaCodecInfo> regulars = new ArrayList<MediaCodecInfo>(); ArrayList<MediaCodecInfo> all = new ArrayList<MediaCodecInfo>(); for (int index = 0; index < count; index++) { try { MediaCodecInfo info = getNewCodecInfoAt(index);
//#ifdef 1 //modify 2018-01-30,disable vp9 codec for youtube if (isWritelist() && "OMX.MTK.VIDEO.DECODER.VP9".equals(info.getName())) { Log.e(TAG, "Skip " + info.getName() + " Codec"); continue; }
//#ifdef 1 //modify 2018-01-30,disable vp9 codec for youtube
public static boolean isWritelist() { boolean ret = false; String callingAPP = ""; FileInputStream fis = null; try { fis = new FileInputStream("/proc/" + android.os.Process.myPid() + "/cmdline"); byte[] buffer = new byte[100]; int count = fis.read(buffer); if (count > 0) { callingAPP = new String(buffer, 0, count); Log.d("mtk debug", "callingAPP is " + callingAPP); } } catch (Exception e) { e.printStackTrace(); } finally { if (fis != null) { try { fis.close(); } catch (Exception exp) { } } }
if (callingAPP.startsWith("com.google.android.youtube") || true) ret = true; return ret;
} // endif
3：device/mediatek/mt6761 / media_codecs_mediatek_video.xml
<MediaCodec name="OMX.MTK.VIDEO.DECODER.VP9" type="video/x-vnd.on2.vp9" >改為：
<MediaCodec name="OMX.MTK.VIDEO.DECODER.SW.VP9" type="video/x-vnd.on2.vp9" >
第三條僅僅作為參考，建議不要修改。