这是我的第一篇文章,请耐心等待。
我正在尝试将原始h264视频播放到Android应用中的Surface对象上。我在HTC上使用android 5.0.1。通过阅读android文档后,我发现我需要使用MediaCodec对象来解码原始字节,然后将它们释放到Surface。我已经倾注了大量的其他问题和文档,但没有找到我看似非常简单的问题的答案。以下是我的代码片段:
@Override
public void surfaceCreated(SurfaceHolder surfHolder) {
try {
String codecType = "video/avc";
MediaFormat mf = MediaFormat.createVideoFormat(codecType, 45 ,45);
mc = MediaCodec.createByCodecName(codecType);
mc.configure(mf, surfHolder.getSurface(), null, 0);
mc.setCallback(vcb);
mc.start();
}
catch (Exception e) {
e.printStackTrace();
}
}
然而,当我试图按名称创建编解码器时,我遇到了问题,我收到了这个错误:
08-26 18:09:02.054 9132-9132/com.james.firstclient I/InputMethodManager﹕ [startInputInner] EditorInfo { packageName=com.james.firstclient, inputType=0x20001, imeOptions=0x48000005, privateImeOptions=null }, windowGainingFocus=android.view.ViewRootImpl$W@37cf53de, mServedView=android.widget.EditText{2a8889bf VFED..CL .F....I. 48,177-1032,290 #7f080001 app:id/hostText}, mServedInputConnectionWrapper=android.view.inputmethod.InputMethodManager$ControlledInputConnectionWrapper@3ed5088c
08-26 18:09:03.964 9132-9292/com.james.firstclient D/libc﹕ [NET] android_getaddrinfofornet+,hn 12(0x3139322e313638),sn(),hints(known),family 0,flags 4
08-26 18:09:03.964 9132-9292/com.james.firstclient D/libc﹕ [NET] android_getaddrinfofornet-, SUCCESS
08-26 18:09:04.094 9132-9298/com.james.firstclient W/ACodec﹕ Allocating component 'video/avc' failed, try next one.
08-26 18:09:04.094 9132-9298/com.james.firstclient E/ACodec﹕ Unable to instantiate codec 'video/avc'.
08-26 18:09:04.094 9132-9298/com.james.firstclient E/ACodec﹕ signalError(omxError 0x80001003, internalError -2147483648)
08-26 18:09:04.094 9132-9298/com.james.firstclient E/MediaCodec﹕ Codec reported err 0xfffffffe, actionCode 0, while in state 1
08-26 18:09:04.094 9132-9132/com.james.firstclient W/MediaCodec-JNI﹕ try to release MediaCodec from JMediaCodec::~JMediaCodec()...
08-26 18:09:04.094 9132-9132/com.james.firstclient W/MediaCodec-JNI﹕ done releasing MediaCodec from JMediaCodec::~JMediaCodec().
08-26 18:09:04.094 9132-9132/com.james.firstclient W/System.err﹕ java.lang.IllegalArgumentException: Failed to initialize video/avc, error 0xfffffffe
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.media.MediaCodec.native_setup(Native Method)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.media.MediaCodec.<init>(MediaCodec.java:486)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.media.MediaCodec.createByCodecName(MediaCodec.java:470)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at com.james.firstclient.WatchVideoActivity.surfaceCreated(WatchVideoActivity.java:63)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.SurfaceView.updateWindow(SurfaceView.java:579)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:176)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:847)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2050)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1106)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6018)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.Choreographer$CallbackRecord.run(Choreographer.java:792)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.Choreographer.doCallbacks(Choreographer.java:596)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.Choreographer.doFrame(Choreographer.java:557)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:778)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.os.Handler.handleCallback(Handler.java:739)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:95)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.os.Looper.loop(Looper.java:155)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5696)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at java.lang.reflect.Method.invoke(Native Method)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:372)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
08-26 18:09:04.114 9132-9132/com.james.firstclient W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
在实例化MediaCodec对象之后,有大量关于该怎么做的信息,但在这种情况下发生的事情基本上没有(我可以找到)。这有点让我充满希望,这只是一个愚蠢的错误。有没有人有任何想法?
提前致谢。
答案 0 :(得分:0)
使用createDecoderByType代替createByCodecName。