我们如何在视频中应用像棕褐色,复古等过滤器,然后将其发布到我们的服务器上?
同样,我们可以通过在TextureView上创建一个过滤层来欺骗用户,然后在服务器上应用相应的过滤器。
代码:
package com.example.mediaplayerdemo_video;
import java.io.IOException;
import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.graphics.Matrix;
import android.graphics.SurfaceTexture;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.util.Log;
import android.view.Surface;
import android.view.TextureView;
public class MainActivity extends Activity implements TextureView.SurfaceTextureListener {
// Log tag.
private static final String TAG = MainActivity.class.getName();
// Asset video file name.
private static final String FILE_NAME = "test.mp4";
// MediaPlayer instance to control playback of video file.
private MediaPlayer mMediaPlayer;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
TextureView textureView = (TextureView) findViewById(R.id.textureView);
textureView.setSurfaceTextureListener(this);
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.release();
mMediaPlayer = null;
}
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i2) {
Surface surface = new Surface(surfaceTexture);
try {
AssetFileDescriptor afd = getAssets().openFd(FILE_NAME);
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
mMediaPlayer.setSurface(surface);
mMediaPlayer.setLooping(true);
mMediaPlayer.prepareAsync();
// Play video when the media source is ready for playback.
mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mediaPlayer) {
mediaPlayer.start();
}
});
} catch (IllegalArgumentException e) {
Log.d(TAG, e.getMessage());
} catch (SecurityException e) {
Log.d(TAG, e.getMessage());
} catch (IllegalStateException e) {
Log.d(TAG, e.getMessage());
} catch (IOException e) {
Log.d(TAG, e.getMessage());
}
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, int i, int i2) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) {
return true;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) {
}
}