共计 5728 个字符，预计需要花费 15 分钟才能阅读完成。
ijkplayer github 地址
ijkplayer 编译
编译可以参考官方说明
简要步骤说明：
将代码下载到本地
git clone https://github.com/Bilibili/ijkplayer
设定 ndk 环境
下载对应平台的 ndk 工具包，官网地址
设置 ndk 的编译环境，因为我使用的是 mac，就直接
export ANDROID_NDK=/ndk-path
初始化 ijkplayer 为 android 编译环境
./init-android.sh
编译 ffmpeg 之前准备因为 ijkplayer 还是依赖于 ffmpeg 的一些功能，所以在进行 ijkplayer 的编译之前，首先需要满足 ffmpeg 的编译条件。最主要的就是 yasm 的安装，以 mac 为例，安装 yasm
brew install yasm
开始编译 ffmpeg
cd android/contrib
./compile-ffmpeg.sh clean
./compile-ffmpeg.sh all
编译 ijkplayer
./compile-ijk.sh all
ijkplayer 的使用
使用前的说明
在完成上面的编译过程之后，可以在 ijkplayer 中发现一个 android 工程，简要的目录如下：
+—/path-to-ijkplayer/android/ijkplayer
|
+—ijkplayer-arm64
|
+—ijkplayer-armv5
|
+—ijkplayer-armv7a
|
+—ijkplayer-x86
|
+—ijkplayer-x86-64
|
+—ijkplayer-java
|
+—ijkplayer-exo
|
+—tools
如上目录为 ijkplayer 在 android 平台上需要用到的库，从命名上可以看出，以上 modules 中包含了这几类：
ijkplayer-arm* 和 ijkplayer-x86*，实现了不同平台下的 so 库。
ijkplayer-java 和 ijkplayer-exo, 为封装好的 ijkplayer 的 java 层 api。
tools，编译需要用到的脚本程序
如何使用
新建 android 工程，命名为：ijkplayer-demo。
讲上文中表示出来的文件夹全部拷贝到新建的 android 工程目录下。
修改新建工程中的 settings.gradle:
include ‘:ijkplayer-armv5’, ‘:ijkplayer-x86_64’
include ‘:ijkplayer-armv7a’
include ‘:ijkplayer-arm64’
include ‘:ijkplayer-x86’
include ‘:ijkplayer-java’
include ‘:ijkplayer-exo’
include ‘:app’
修改 /path-to-ijkplayer-demp/build.gradle
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath ‘com.android.tools.build:gradle:2.3.3’
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
ext {
compileSdkVersion = 23
buildToolsVersion = “23.0.3”
targetSdkVersion = 23
versionCode = 800000
versionName = “0.8.0”
}
task clean(type: Delete) {
delete rootProject.buildDir
}
修改 /path-to-ijkplayer-demp/app/build.gradle
apply plugin: ‘com.android.application’
android {
compileSdkVersion 25
buildToolsVersion “25.0.1”
defaultConfig {
applicationId “com.test.ijkplayer.hankun.ijkplayer_test”
minSdkVersion 21
targetSdkVersion 25
versionCode 1
versionName “1.0”
testInstrumentationRunner “android.support.test.runner.AndroidJUnitRunner”
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’
}
}
}
dependencies {
compile fileTree(include: [‘*.jar’], dir: ‘libs’)
androidTestCompile(‘com.android.support.test.espresso:espresso-core:2.2.2’, {
exclude group: ‘com.android.support’, module: ‘support-annotations’
})
compile ‘com.android.support:appcompat-v7:25.1.1’
compile ‘com.android.support.constraint:constraint-layout:1.0.2’
testCompile ‘junit:junit:4.12’
compile project(‘:ijkplayer-java’)
compile project(‘:ijkplayer-arm64’)
compile project(‘:ijkplayer-armv5’)
compile project(‘:ijkplayer-armv7a’)
compile project(‘:ijkplayer-x86’)
compile project(‘:ijkplayer-x86_64’)
}
给 app 添加权限
AndroidManifest.xml
<uses-permission android:name=”android.permission.INTERNET” />
<uses-permission android:name=”android.permission.WAKE_LOCK” />
<uses-permission android:name=”android.permission.WRITE_EXTERNAL_STORAGE” />
“`
app 的布局文件
<?xml version=”1.0″ encoding=”utf-8″?>
<android.support.constraint.ConstraintLayout xmlns:android=”http://schemas.android.com/apk/res/android”
xmlns:app=”http://schemas.android.com/apk/res-auto”
xmlns:tools=”http://schemas.android.com/tools”
android:layout_width=”match_parent”
android:layout_height=”match_parent”
tools:context=”com.test.ijkplayer.hankun.ijkplayer_test.MainActivity”>
<RelativeLayout
android:layout_width=”368dp”
android:layout_height=”495dp”
tools:layout_editor_absoluteY=”8dp”
tools:layout_editor_absoluteX=”8dp”>
<Button
android:id=”@+id/button_prepare”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:text=”start”
android:layout_alignParentTop=”true”
android:layout_alignParentStart=”true” />
<TextureView
android:id=”@+id/show_screen”
android:layout_width=”400dp”
android:layout_height=”200dp”
android:layout_below=”@+id/button_prepare”
/>
</RelativeLayout>
</android.support.constraint.ConstraintLayout>
MainActivity 代码
package com.test.ijkplayer.hankun.ijkplayer_test;
import android.content.Context;
import android.graphics.SurfaceTexture;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import android.widget.Button;
import tv.danmaku.ijk.media.player.IMediaPlayer;
import tv.danmaku.ijk.media.player.IjkMediaPlayer;
public class MainActivity extends AppCompatActivity {
private String source_url = “rtsp://192.168.1.106:8554/test.mkv”;
private Context _ctx = this;
public IjkMediaPlayer player = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
player = new IjkMediaPlayer();
TextureView tv = (TextureView)findViewById(R.id.show_screen);
tv.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
try {
player.setSurface(new Surface(surface));
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
});
Button btn_prepare = (Button) findViewById(R.id.button_prepare);
btn_prepare.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// init player
IjkMediaPlayer.loadLibrariesOnce(null);
IjkMediaPlayer.native_profileBegin(“libijkplayer.so”);
player.setOnPreparedListener(mPreparedListener);
try {
player.setDataSource(_ctx, Uri.parse(source_url));
player.prepareAsync();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
IMediaPlayer.OnPreparedListener mPreparedListener = new IMediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(IMediaPlayer mp) {
player.start();
}
};
}
到这里，就完成了一个最简单的 ijkplayer 的 demo。剩下的就是认真看 ijkplayer 的实现了。
