I've been writing a video player these days. I use surfaceview with mediaplayer or VideoView for video playback. Everything is going smoothly. When I play a video in the wrong direction, it can't be automatically converted to the correct direction. At this time, you can only rely on yourself to rotate the video direction by 90 degrees. When I have an idea, I will start working, but no matter how I rotate, everything else rotates, but the video still doesn't move. Baidu has no results for a long time. I can't understand English in stack overflow for a few minutes, but I saw the TextureView class and brought it here. I have used it, how convenient and happy it is to rotate, and I can finally play it normally, so happy.
/*
* Copyright (C) 2013 yixia.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.vov.vitamio.demo;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Matrix;
import android.graphics.SurfaceTexture;
import android.media.AudioManager;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Surface;
import android.view.TextureView;
import android.widget.Toast;
import io.vov.vitamio.LibsChecker;
import io.vov.vitamio.MediaPlayer;
import io.vov.vitamio.MediaPlayer.OnBufferingUpdateListener;
import io.vov.vitamio.MediaPlayer.OnCompletionListener;
import io.vov.vitamio.MediaPlayer.OnPreparedListener;
@SuppressLint("NewApi")
public class MediaPlayerDemo_setSurface extends Activity implements OnBufferingUpdateListener,
OnCompletionListener, OnPreparedListener, TextureView.SurfaceTextureListener {
private static final String TAG = "MediaPlayerDemo";
private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private TextureView mTextureView;
private String path;
private Surface surf;
private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
/**
*
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
if (!LibsChecker.checkVitamioLibs(this))
return;
setContentView(R.layout.mediaplayer_3);
mTextureView = (TextureView) findViewById(R.id.surface);
mTextureView.setSurfaceTextureListener(this);
mTextureView.setRotation(90);
}
@SuppressLint("NewApi")
private void playVideo(SurfaceTexture surfaceTexture) {
doCleanUp();
try {
path = Environment.getExternalStorageDirectory()+"/"+"1.mp4";
if (path == "") {
// Tell the user to provide a media file URL.
Toast.makeText(
MediaPlayerDemo_setSurface.this,
"Please edit MediaPlayerDemo_setSurface Activity, "
+ "and set the path variable to your media file path."
+ " Your media file must be stored on sdcard.", Toast.LENGTH_LONG).show();
return;
}
// Create a new media player and set the listeners
mMediaPlayer = new MediaPlayer(this, true);
mMediaPlayer.setDataSource(path);
if (surf == null) {
surf = new Surface (surfaceTexture);
}
mMediaPlayer.setSurface(surf);
mMediaPlayer.prepareAsync();
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
}
}
public void onBufferingUpdate(MediaPlayer arg0, int percent) {
// Log.d(TAG, "onBufferingUpdate percent:" + percent);
}
public void onCompletion(MediaPlayer arg0) {
Log.d(TAG, "onCompletion called");
}
public void onPrepared(MediaPlayer mediaplayer) {
Log.d(TAG, "onPrepared called");
mIsVideoReadyToBePlayed = true;
if (mIsVideoReadyToBePlayed) {
startVideoPlayback();
}
}
@Override
protected void onPause() {
super.onPause();
releaseMediaPlayer();
doCleanUp();
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
doCleanUp();
}
private void releaseMediaPlayer() {
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private void doCleanUp() {
mVideoWidth = 0;
mVideoHeight = 0;
mIsVideoReadyToBePlayed = false;
mIsVideoSizeKnown = false;
}
private void startVideoPlayback() {
Log.v(TAG, "startVideoPlayback");
adjustAspectRatio(mMediaPlayer.getVideoWidth(), mMediaPlayer.getVideoHeight());
mMediaPlayer.start();
}
/**
* Sets the TextureView transform to preserve the aspect ratio of the video.
*/
private void adjustAspectRatio(int videoWidth, int videoHeight) {
int viewWidth = mTextureView.getWidth();
int viewHeight = mTextureView.getHeight();
double aspectRatio = (double) videoHeight / videoWidth;
int newWidth, newHeight;
if (viewHeight > (int) (viewWidth * aspectRatio)) {
// limited by narrow width; restrict height
newWidth = viewWidth;
newHeight = (int) (viewWidth * aspectRatio);
} else {
// limited by short height; restrict width
newWidth = (int) (viewHeight / aspectRatio);
newHeight = viewHeight;
}
int xoff = (viewWidth - newWidth) / 2;
int yoff = (viewHeight - newHeight) / 2;
Log.v(TAG, "video=" + videoWidth + "x" + videoHeight + " view=" + viewWidth + "x" + viewHeight
+ " newView=" + newWidth + "x" + newHeight + " off=" + xoff + "," + yoff);
Matrix txform = new Matrix();
mTextureView.getTransform(txform);
txform.setScale((float) newWidth / viewWidth, (float) newHeight / viewHeight);
//txform.postRotate(10); // just for fun
txform.postTranslate(xoff, yoff);
mTextureView.setTransform(txform);
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
playVideo(surface);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
}
An introduction to the TextureView class. http://www.bubuko.com/infodetail-656030.html
updated code
/*
* Copyright (C) 2013 yixia.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.vov.vitamio.demo;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Matrix;
import android.graphics.SurfaceTexture;
import android.media.AudioManager;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Surface;
import android.view.TextureView;
import android.widget.Toast;
import io.vov.vitamio.LibsChecker;
import io.vov.vitamio.MediaPlayer;
import io.vov.vitamio.MediaPlayer.OnBufferingUpdateListener;
import io.vov.vitamio.MediaPlayer.OnCompletionListener;
import io.vov.vitamio.MediaPlayer.OnPreparedListener;
@SuppressLint("NewApi")
public class MediaPlayerDemo_setSurface extends Activity implements OnBufferingUpdateListener,
OnCompletionListener, OnPreparedListener, TextureView.SurfaceTextureListener {
private static final String TAG = "MediaPlayerDemo";
private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private TextureView mTextureView;
private String path;
private Surface surf;
private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
/**
*
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
if (!LibsChecker.checkVitamioLibs(this))
return;
setContentView(R.layout.mediaplayer_3);
mTextureView = (TextureView) findViewById(R.id.surface);
mTextureView.setSurfaceTextureListener(this);
mTextureView.setRotation(90);
mTextureView.setScaleX(1280f/720);
mTextureView.setScaleY(720f/1280);
}
@SuppressLint("NewApi")
private void playVideo(SurfaceTexture surfaceTexture) {
doCleanUp();
try {
path = Environment.getExternalStorageDirectory()+"/"+"1.mp4";
if (path == "") {
// Tell the user to provide a media file URL.
Toast.makeText(
MediaPlayerDemo_setSurface.this,
"Please edit MediaPlayerDemo_setSurface Activity, "
+ "and set the path variable to your media file path."
+ " Your media file must be stored on sdcard.", Toast.LENGTH_LONG).show();
return;
}
// Create a new media player and set the listeners
mMediaPlayer = new MediaPlayer(this, true);
mMediaPlayer.setDataSource(path);
if (surf == null) {
surf = new Surface (surfaceTexture);
}
mMediaPlayer.setSurface(surf);
mMediaPlayer.prepareAsync();
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
}
}
public void onBufferingUpdate(MediaPlayer arg0, int percent) {
// Log.d(TAG, "onBufferingUpdate percent:" + percent);
}
public void onCompletion(MediaPlayer arg0) {
Log.d(TAG, "onCompletion called");
}
public void onPrepared(MediaPlayer mediaplayer) {
Log.d(TAG, "onPrepared called");
mIsVideoReadyToBePlayed = true;
if (mIsVideoReadyToBePlayed) {
startVideoPlayback();
}
}
@Override
protected void onPause() {
super.onPause();
releaseMediaPlayer();
doCleanUp();
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
doCleanUp();
}
private void releaseMediaPlayer() {
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private void doCleanUp() {
mVideoWidth = 0;
mVideoHeight = 0;
mIsVideoReadyToBePlayed = false;
mIsVideoSizeKnown = false;
}
private void startVideoPlayback() {
Log.v(TAG, "startVideoPlayback");
mMediaPlayer.start();
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
playVideo(surface);
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
}