"About the video file playback of the H.264 format, we can decode the implementation via Android.media.mediacodec, this is very familiar with the friend who is working in the current media, security real-time video transmission, this is just a demo, it needs Classmates download the source code research yourself!
The effect is as follows:
The key code is as follows:
Package com.asir.h264demo;
Import android.annotation.targetApi;
Import Android.App.Activity;
Import android.media.mediacodec;
Import android.media.mediaformat;
Import Android.OS.BUILD;
Import android.os.bundle;
Import android.util.log;
Import android.view.surfaceview;
Import android.view.view;
Import android.widget.button;
Import java.io.bufferedinputstream;
Import java.io.file;
Import java.io.fileinputstream;
Import java.io.filenotfoundexception;
Import java.io.ioException;
Import Java.io.InputStream;
Import java.nio.bytebuffer;
Public class mainactivity extensity {
Private SurfaceView MsurfaceView;
Private button MREADBUTTON
PRIVATE MediaCodec McODEC;
Thread readfilethread;
Boolean isinit = false;
// Video constants
Private final static string mime_type = "" VIDEO / AVC ""; // h.264 Advanced Video
Private static int video_width = 1024;
Private static int video_height = 600;
PRIVATE FINAL = 30;
PRIVATE FINAL Static Int Head_offset = 512;
Private final static string log_tag = "asir" ";
@Override
Protected void oncreate (bundle savedinstancestate) {
Super.onstance (Savedinstancestate);
SetContentView (r.layout.Activity_main);
MsurfaceView = (SurfaceView) FindViewbyid (r.id.surfaceView);
MREADBUTTON = (Button) FindViewbyid (r.id.btn_readfile);
MReadbutton.setonclickListener (New View.onClickListener () {
@Override
Public void onclick (view v) {
IF (! isinit) {
Initdecoder ();
isinit = true;
}
ReadFileThread = New Thread (ReadFile);
ReadFileThread.start ();
}
});
}
@Override
protected void onpause () {
Super.onpause ();
}
@Override
Protected void onResume () {
Super.onResume ();
}
@Override
protected void ondestroy () {
Super.ondestroy ();
ReadFileThread.Interrupt ();
}
@TargetApi (build.version_codes.jelly_bean)
Public void initdecoder () {
Try {
McOdec = mediacodec.createdecoderbytype (mime_type);
Mediaformat MediaFormat = MediaFormat.createvideoFormat (MIME_TYPE, Video_WIDTH, Video_HEIGHT);
McOdec.configure (MediaFormat, MsurfaceView.getHolder (). getsurface (), null, 0);
McOdec.start ();
} catch (ioexception e) {
E.PrintStackTrace ();
}
}
INT mcount = 0;
// final byte [] h264split = {0, 0, 0, 1};
@TargetApi (build.version_codes.jelly_bean)
Public boolean onframe (byte [] buf, int length) {
LOG.E (log_tag, "" onframe start ");
// Get Input Buffer Index
Long PTSUSEC = 0;
IF (McOUNT == 0) {
Bytebuffer [] InputBuffers = McODec.getinputBuffers ();
INT INPUTBUFFERINDEX = McODec.dequeueInputBuffer (100000);
Log.e (log_tag, "" Onframe Index: "+ InputBufferIndex);
IF (InputBufferIndex> = 0) {
Bytebuffer InputBuffer = INPUTBUFFERS [InputBufferIndex];
InputBuffer.clear ();
InputBuffer.Put (buf, 0, length) .rewind ();
McOdec.queueInputBuffer (InputBufferIndex, 0, Length, 0, Mediacodec.Buffer_Flag_codec_config);
} else {
Log.e (log_tag, "" InputBufferIndex <0 "+ InputBufferIndex);
Return False;
}
} else {
Bytebuffer [] InputBuffers = McODec.getinputBuffers ();
INT INPUTBUFFERINDEX = McODec.dequeueInputBuffer (100000);
Log.e (log_tag, "" Onframe Index: "+ InputBufferIndex);
IF (InputBufferIndex> = 0) {
InputBuffers [INPUTBUFFERINDEX] .clear ();
InputBuffers [InputBufferIndex] .put (buf, 0, length) .rewind ();
McODec.queueInputBuffer (InputBufferIndex, 0, Length, PTSUSEC, 0);
} else {
Log.e (log_tag, "" InputBufferIndex <0 "+ InputBufferIndex);
Return False;
}
}
McOUNT ++;
// Get Output Buffer INDEX
Mediacodec.bufferinfo bufferinfo = new mediacodec.bufferinfo ();
Int outputBufferIndex = McOdec.dequeueoutputBuffer (BufferInfo, 10000);
While (OutputBufferIndex> = 0) {
McOdec.releaseoutputBuffer (OutputBufferIndex, true);
OutputBufferIndex = mcodec.dequeueoutputbuffer (bufferinfo, 0);
}
LOG.E (log_tag, "" onframe end ");
Return True;
}
/ **
* Find H264 Frame HEAD
*
* @PARAM BUFFER
* @Param Len
* @Return the offset of frame head, return 0 if can not find one
* /
Static int foundhead (byte [] buffer, int LEN) {
INT I;
For (i = head_offset; i
300) {
Try {
Thread.sleep (20);
H264count = 0;
CONTINUE;
} catch (exception e) {
Log.e (log_tag, "" Exception for: "+ E.GetMessage ());
}
}
BufferedInputStream Bis = NULL;
String sdfilename = "" / sdcard / "+ string.format (" ""% 03d ", h264count) +" ".h264"
String assetsfilename = string.format (""% 03d ", h264count) +" ".h264"
Log.e (log_tag, "" Read from FileName: "+ SDFileName);
// fileinputstream fos = null;
Try {
File H264 = New File (SDFileName);
IF (! h264.exists ()) {
Log.e (log_tag, "" File isn't exist: "+ sdfilename);
Return;
}
// read the SD card
// fos = new fileinputstream (h264);
// bis = new bufferedinputStream (FOS);
// Read Assets Directory
INPUTSTREAM IS = GetResources (). Getassets (). Open (assetsfilename);
BIS = New BufferedInputStream (IS);
INT filelen = (int) h264.length ();
Byte [] buffer = new byte [filelen];
Try {
Bis.Read (buffer);
} catch (ioexception e) {
Log.e (log_tag, "" Error: Read from file "+ E.getMessage ());
}
Onframe (Buffer, Filelen);
} catch (exception e) {
IF (buildconfig.debug) {
Log.e (log_tag, "" error: "+ E.getMessage ());
}
}
H264Count ++;
}
Log.d (log_tag, "end loop");
}
}
} 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229
Code Logic Analysis: This is mainly to read the H264 file under the project directory assets directory through a thread thread, and then enters the read content and the SURFACEVIEW to be displayed to MEDIACODEC to make playback.
XML interface file:
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Source code Click to download "
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