原文链接:http://www.apkbus.com/blog-822717-68600.html
认识ijkplayer
最近公司准备开发一款视频播放及直播的应用,找了许多开源的框架,大部分都是基于ffmpeg开发的。最开始准备用Vitamio框架开发的,相关的文章也比较丰富,结果对于非个人移动应用均需购买Vitamio使用授权。不过B站开源的ijkplayer也不错,而且也不需要商业授权。
ijkplayer是一个基于FFmpeg的轻量级Android/iOS视频播放器。FFmpeg的是全球领先的多媒体框架,能够解码,编码, 转码,复用,解复用,流,过滤器和播放大部分的视频格式。它提供了录制、转换以及流化音视频的完整解决方案。它包含了非常先进的音频/视频编解码库libavcodec,为了保证高可移植性和编解码质量,libavcodec里很多code都是从头开发的。
2.环境配置
项目中引入ijkplayer环境有两种方式。
2.1在Gradle中引入
# requiredallprojects { repositories { jcenter() } } dependencies { # required, enough for most devices. compile 'tv.danmaku.ijk.media:ijkplayer-java:0.6.1' compile 'tv.danmaku.ijk.media:ijkplayer-armv7a:0.6.1' # Other ABIs: optional compile 'tv.danmaku.ijk.media:ijkplayer-armv5:0.6.1' compile 'tv.danmaku.ijk.media:ijkplayer-arm64:0.6.1' compile 'tv.danmaku.ijk.media:ijkplayer-x86:0.6.1' compile 'tv.danmaku.ijk.media:ijkplayer-x86_64:0.6.1' # ExoPlayer as IMediaPlayer: optional, experimental compile 'tv.danmaku.ijk.media:ijkplayer-exo:0.6.1'}
2.2在Ubuntu下编译源码得到
Ubuntu需要安装homebrew, Git, yasm
# install homebrew, git, yasmruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"brew install git brew install yasm# add these lines to your ~/.bash_profile or ~/.profile# export ANDROID_SDK=<your sdk path># export ANDROID_NDK=<your ndk path># on Cygwin (unmaintained)# install git, make, yasm12345678910111234567891011
开始编译
git clone https://github.com/Bilibili/ijkplayer.git ijkplayer-androidcd ijkplayer-android git checkout -B latest k0.6.1./init-android.sh cd android/contrib ./compile-ffmpeg.sh clean ./compile-ffmpeg.sh all cd .. ./compile-ijk.sh all# Android Studio:# Open an existing Android Studio project# Select android/ijkplayer/ and import## define ext block in your root build.gradle# ext {# compileSdkVersion = 23 // depending on your sdk version# buildToolsVersion = "23.0.0" // depending on your build tools version## targetSdkVersion = 23 // depending on your sdk version# }## Eclipse: (obselete)# File -> New -> Project -> Android Project from Existing Code# Select android/ and import all project# Import appcompat-v7# Import preference-v7## Gradle# cd ijkplayer# gradle1234567891011121314151617181920212223242526272829303132333412345678910111213141516171819202122232425262728293031323334
目录结构
3.播放器使用
可能是网络的问题,使用Gradle导入会花费很长时间,如果遇到超时,还得重头来一遍,太费时间了。后来我就直接在Ubuntu下编译后,在android Studio下导入该项目。我先介绍下Demo中利用ijkplayer播放视频的过程。
3.1初始化播放器
IjkMediaPlayer.loadLibrariesOnce(null);IjkMediaPlayer.native_profileBegin("libijkplayer.so");1212
3.2初始化IjkVideoView
//这里使用的是Demo中提供的AndroidMediaController类控制播放相关操作mMediaController = new AndroidMediaController(this, false); mMediaController.setSupportActionBar(actionBar); mVideoView = (IjkVideoView) findViewById(R.id.video_view); mVideoView.setMediaController(mMediaController);
3.3设置本地视频文件位置或服务器地址,然后播放
mVideoView.setVideoPath(mVideoPath); mVideoView.start();
3.4Activity销毁时,需要释放资源
@Overridepublic void onBackPressed() { mBackPressed = true; super.onBackPressed(); }@Overrideprotected void onStop() { super.onStop(); //点击返回或不允许后台播放时 释放资源 if (mBackPressed || !mVideoView.isBackgroundPlayEnabled()) { mVideoView.stopPlayback(); mVideoView.release(true); mVideoView.stopBackgroundPlay(); } else { mVideoView.enterBackground(); } IjkMediaPlayer.native_profileEnd(); }
4.自定义播放器
当然官方提供的Demo只是演示视频播放的基本操作,对于视频播放的控制、全屏等操作,还要自己动手做。
4.1部分声明
private static final int SIZE_DEFAULT = 0;private static final int SIZE_4_3 = 1;private static final int SIZE_16_9 = 2;private int currentSize = SIZE_16_9;private IjkVideoView video;private SeekBar seekBar;123456123456
4.2视频播放比例
这里需要修改IjkVideoView部分代码后,才支持按比例播放
//修改相关代码private static final int[] s_allAspectRatio = { IRenderView.AR_ASPECT_FIT_PARENT, IRenderView.AR_ASPECT_FILL_PARENT, IRenderView.AR_ASPECT_WRAP_CONTENT, IRenderView.AR_MATCH_PARENT, IRenderView.AR_16_9_FIT_PARENT, IRenderView.AR_4_3_FIT_PARENT };private int mCurrentAspectRatioIndex = 3;//0private int mCurrentAspectRatio = s_allAspectRatio[3];//0private int mCurrentRender = RENDER_TEXTURE_VIEW;//增加下面方法public IRenderView getmRenderView() { return mRenderView; }public int getmVideoWidth() { return mVideoWidth; }public int getmVideoHeight() { return mVideoHeight; }
设置视频播放比例
public void setScreenRate(int rate) { int width = 0; int height = 0; if (getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {// 横屏 if (rate == SIZE_DEFAULT) { width = video.getmVideoWidth(); height = video.getmVideoHeight(); } else if (rate == SIZE_4_3) { width = screenHeight / 3 * 4; height = screenHeight; } else if (rate == SIZE_16_9) { width = screenHeight / 9 * 16; height = screenHeight; } } else { //竖屏 if (rate == SIZE_DEFAULT) { width = video.getmVideoWidth(); height = video.getmVideoHeight(); } else if (rate == SIZE_4_3) { width = screenWidth; height = screenWidth * 3 / 4; } else if (rate == SIZE_16_9) { width = screenWidth; height = screenWidth * 9 / 16; } } if (width > 0 && height > 0) { FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) video.getmRenderView().getView().getLayoutParams(); lp.width = width; lp.height = height; video.getmRenderView().getView().setLayoutParams(lp); } }
4.3屏幕方向切换
private void fullChangeScreen() { if (getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {// 切换为竖屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); } else { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); } }
4.4全屏播放
@Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); //重新获取屏幕宽高 initScreenInfo(); if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {//切换为横屏 LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) video.getLayoutParams(); lp.height = screenHeight; lp.width = screenWidth; video.setLayoutParams(lp); } else { LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) video.getLayoutParams(); lp.height = screenWidth * 9 / 16; lp.width = screenWidth; video.setLayoutParams(lp); } setScreenRate(currentSize);}
4.5播放进度
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { .... @Override public void onStopTrackingTouch(SeekBar seekBar) { video.seekTo(seekBar.getProgress()*video.getDuration()/100); ... } });//视频开始播放时使用handle.sendMessageDelayed更新时间显示private void refreshTime(){ int totalSeconds = video.getCurrentPosition() / 1000; int seconds = totalSeconds % 60; int minutes = (totalSeconds / 60) % 60; int hours = totalSeconds / 3600; String ti=hours > 0 ? String.format("%02d:%02d:%02d", hours, minutes, seconds):String.format("%02d:%02d", minutes, seconds); time.setText(ti); }
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