uniapp 使用ffmpeg播放rtsp

uniapp正常是无法使用ffmpeg进行播放的，我们需要使用android进行编译原生插件。

ffmpeg的版本使用的  7.1

1、首选，需要使用android加载ffmpeg，对视频进行解码等操作

2、其次，对代码进行打包so文件

3、使用so文件在uniapp给的组件打包示例代码中（特别注意，so文件需要包名一致，否则无法使用）

4、打包成插件，让uniapp使用。

android项目结构，如图所示：

需要使用ffmpeg，

CMakeLlists.txt代码：

cmake_minimum_required(VERSION 3.18.1)project("decodertsp")
include_directories(${CMAKE_SOURCE_DIR}/include/ffmpeg/include/${ANDROID_ABI})
include_directories(${CMAKE_SOURCE_DIR})set(LIB_DIR ${CMAKE_SOURCE_DIR}/lib/ffmpeg/lib/${ANDROID_ABI})add_library( # Sets the name of the library.decodertsp# Sets the library as a shared library.SHARED# Provides a relative path to your source file(s).native-lib.cpp)add_library(avformatSHAREDIMPORTED)set_target_properties(avformatPROPERTIES IMPORTED_LOCATION${LIB_DIR}/libavformat.so)add_library(avcodecSHAREDIMPORTED)set_target_properties(avcodecPROPERTIES IMPORTED_LOCATION${LIB_DIR}/libavcodec.so)add_library(swscaleSHAREDIMPORTED)set_target_properties(swscalePROPERTIES IMPORTED_LOCATION${LIB_DIR}/libswscale.so)
add_library(avutilSHAREDIMPORTED)set_target_properties(avutilPROPERTIES IMPORTED_LOCATION${LIB_DIR}/libavutil.so)add_library(swresampleSHAREDIMPORTED)set_target_properties(swresamplePROPERTIES IMPORTED_LOCATION${LIB_DIR}/libswresample.so)add_library(avfilterSHAREDIMPORTED)set_target_properties(avfilterPROPERTIES IMPORTED_LOCATION${LIB_DIR}/libavfilter.so)#add_library(postproc
#        SHARED
#        IMPORTED)
#
#set_target_properties(
#        postproc
#        PROPERTIES IMPORTED_LOCATION
#        ${LIB_DIR}/libpostproc.so)find_library( # Sets the name of the path variable.log-liblog)
target_link_libraries( # Specifies the target library.decodertspandroidavcodecavfilteravformatavutilswresampleswscale
#        postproc${log-lib})

native-lib.cpp

#include <jni.h>
#include <string>
#include <include/jniLog.h>
#include "include/Decoder.h"
#include <android/native_window_jni.h>
#include <android/native_window.h>bool IsStop = false;
extern "C"
JNIEXPORT void JNICALL
Java_rtsp_ffmpeg_player_RtspPlayerView_decodeVideo(JNIEnv *env, jobject thiz, jstring rtsp_url,jobject surface) {const char *uri = env->GetStringUTFChars(rtsp_url, 0);IsStop = false;// 解码视频，解码音频类似，解码的流程类似，把之前的代码拷过来avformat_network_init();AVFormatContext *pFormatContext = NULL;int formatOpenInputRes = 0;int formatFindStreamInfoRes = 0;int audioStramIndex = -1;AVCodecParameters *pCodecParameters;const AVCodec *pCodec = NULL;AVCodecContext *pCodecContext = NULL;int codecParametersToContextRes = -1;int codecOpenRes = -1;int index = 0;AVPacket *pPacket = NULL;AVFrame *pFrame = NULL;formatOpenInputRes = avformat_open_input(&pFormatContext, uri, NULL, NULL);const char* version = av_version_info();LOGI("Version= %s",version);if(formatOpenInputRes<0){LOGE("open url error : %s", av_err2str(formatOpenInputRes));return;}formatFindStreamInfoRes = avformat_find_stream_info(pFormatContext, NULL);// 查找视频流的 indexaudioStramIndex = av_find_best_stream(pFormatContext, AVMediaType::AVMEDIA_TYPE_VIDEO, -1, -1,NULL, 0);// 查找解码pCodecParameters = pFormatContext->streams[audioStramIndex]->codecpar;pCodec = avcodec_find_decoder(pCodecParameters->codec_id);// 打开解码器pCodecContext = avcodec_alloc_context3(pCodec);codecParametersToContextRes = avcodec_parameters_to_context(pCodecContext, pCodecParameters);codecOpenRes = avcodec_open2(pCodecContext, pCodec, NULL);// 1. 获取窗体ANativeWindow *pNativeWindow = ANativeWindow_fromSurface(env, surface);if(pNativeWindow == NULL){//LOGE("获取窗体失败");return ;}// 2. 设置缓存区的数据ANativeWindow_setBuffersGeometry(pNativeWindow, pCodecContext->width, pCodecContext->height,WINDOW_FORMAT_RGBA_8888);// Window 缓冲区的 BufferANativeWindow_Buffer outBuffer;// 3.初始化转换上下文SwsContext *pSwsContext = sws_getContext(pCodecContext->width, pCodecContext->height,pCodecContext->pix_fmt, pCodecContext->width, pCodecContext->height,AV_PIX_FMT_RGBA, SWS_BILINEAR, NULL, NULL, NULL);AVFrame *pRgbaFrame = av_frame_alloc();int frameSize = av_image_get_buffer_size(AV_PIX_FMT_RGBA, pCodecContext->width,pCodecContext->height, 1);uint8_t *frameBuffer = (uint8_t *) malloc(frameSize);av_image_fill_arrays(pRgbaFrame->data, pRgbaFrame->linesize, frameBuffer, AV_PIX_FMT_RGBA,pCodecContext->width, pCodecContext->height, 1);pPacket = av_packet_alloc();pFrame = av_frame_alloc();while (av_read_frame(pFormatContext, pPacket) >= 0 && !IsStop) {if (pPacket->stream_index == audioStramIndex) {// Packet 包，压缩的数据，解码成 数据int codecSendPacketRes = avcodec_send_packet(pCodecContext, pPacket);if (codecSendPacketRes == 0) {int codecReceiveFrameRes = avcodec_receive_frame(pCodecContext, pFrame);if (codecReceiveFrameRes == 0) {// AVPacket -> AVFrameindex++;//LOGE("解码第 %d 帧", index);// 假设拿到了转换后的 RGBA 的 data 数据，如何渲染，把数据推到缓冲区sws_scale(pSwsContext, (const uint8_t *const *) pFrame->data, pFrame->linesize,0, pCodecContext->height, pRgbaFrame->data, pRgbaFrame->linesize);// 把数据推到缓冲区if (ANativeWindow_lock(pNativeWindow, &outBuffer, NULL) < 0) {// Handle errorLOGE("ANativeWindow_lock is ERROR");}
// Data copymemcpy(outBuffer.bits, frameBuffer, frameSize);if (ANativeWindow_unlockAndPost(pNativeWindow) < 0) {// Handle errorLOGE("ANativeWindow_unlockAndPost is ERROR");}}}}// 解引用av_packet_unref(pPacket);av_frame_unref(pFrame);}// 1. 解引用数据 data ， 2. 销毁 pPacket 结构体内存  3. pPacket = NULLav_packet_free(&pPacket);av_frame_free(&pFrame);__av_resources_destroy:if (pCodecContext != NULL) {avcodec_free_context(&pCodecContext);pCodecContext = NULL;}if (pFormatContext != NULL) {avformat_close_input(&pFormatContext);avformat_free_context(pFormatContext);pFormatContext = NULL;}avformat_network_deinit();env->ReleaseStringUTFChars(rtsp_url, uri);
}
extern "C"
JNIEXPORT void JNICALL
Java_rtsp_ffmpeg_player_RtspPlayerView_stopVideo(JNIEnv *env, jobject thiz) {IsStop = true;
}
extern "C"
JNIEXPORT void JNICALL
Java_rtsp_ffmpeg_player_RtspPlayerView_drawToSurface(JNIEnv *env, jclass clazz, jobject surface,jint color) {ANativeWindow_Buffer nwBuffer;LOGI("ANativeWindow_fromSurface ");ANativeWindow *mANativeWindow = ANativeWindow_fromSurface(env, surface);if (mANativeWindow == NULL) {LOGE("ANativeWindow_fromSurface error");return;}LOGI("ANativeWindow_lock ");if (0 != ANativeWindow_lock(mANativeWindow, &nwBuffer, 0)) {LOGE("ANativeWindow_lock error");return;}LOGI("ANativeWindow_lock nwBuffer->format ");if (nwBuffer.format == WINDOW_FORMAT_RGBA_8888) {LOGI("nwBuffer->format == WINDOW_FORMAT_RGBA_8888 ");for (int i = 0; i < nwBuffer.height * nwBuffer.width; i++) {*((int*)nwBuffer.bits + i) = color;}}LOGI("ANativeWindow_unlockAndPost ");if (0 != ANativeWindow_unlockAndPost(mANativeWindow)) {LOGE("ANativeWindow_unlockAndPost error");return;}ANativeWindow_release(mANativeWindow);}

RtspPlayerView.java

package rtsp.ffmpeg.player;import android.content.Context;
import android.graphics.PixelFormat;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;public class RtspPlayerView  extends SurfaceView implements SurfaceHolder.Callback {//加载so库文件static {System.loadLibrary("decodertsp");}private  SurfaceHolder holder;private  String url = "";public  RtspPlayerView(Context context, AttributeSet attrs){super(context,attrs);init();}public  RtspPlayerView(Context context,AttributeSet attrs,int defStyleAttr){super(context,attrs,defStyleAttr);init();}private  void init(){holder = getHolder();holder.addCallback(this);holder.setFormat(PixelFormat.RGBA_8888);}@Overridepublic void surfaceCreated(SurfaceHolder holder) {Log.i("RtspPlayerView", "Surface create success");}public  void stop(){String bufferedImage = rgb2Hex(0, 0, 0);String substring = String.valueOf(bufferedImage).substring(3);int color = Integer.parseInt(substring,16);drawToSurface(holder.getSurface(),color);stopVideo();}public void play(String uri) {this.url = uri;if (uri != null && !uri.isEmpty()) {new Thread(new Runnable() {@Overridepublic void run() {decodeVideo(url, holder.getSurface());}}).start();}}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {Log.i("RtspPlayerView", "Surface ");}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {Log.i("RtspPlayerView", "Surface 销毁");}public static String  rgb2Hex(int r,int g,int b){return String.format("0xFF%02X%02X%02X", r,g,b);}public static native void drawToSurface(Surface surface, int color);private native void decodeVideo(String rtspUrl, Surface surface);//private native  void stopVideo();//public static native void drawToSurface(Surface surface, int color);private native void stopVideo();
}

MainActivity.java

package com.hisign.decodertsp;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Toast;import com.blankj.utilcode.util.KeyboardUtils;
import com.blankj.utilcode.util.SPUtils;
import com.hisign.decodertsp.databinding.ActivityMainBinding;import rtsp.ffmpeg.player.RtspPlayerView;public class MainActivity extends AppCompatActivity {private final static String KEY_IP  = "KEY_IP";private ActivityMainBinding binding;private RtspPlayerView myRtsp;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);binding = ActivityMainBinding.inflate(getLayoutInflater());setContentView(binding.getRoot());String ip = SPUtils.getInstance().getString(KEY_IP);binding.etIp.setText(ip);myRtsp = new RtspPlayerView(this,null,0);binding.rtspParent.addView(myRtsp);binding.btnStart.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {if(TextUtils.isEmpty(ip)){Toast.makeText(MainActivity.this, "please input ip!", Toast.LENGTH_SHORT).show();return;}SPUtils.getInstance().put(KEY_IP,ip);String url = "rtsp://admin:123456@"+ip+":554/H.264/ch1/main/av_stream";myRtsp.play(url);KeyboardUtils.hideSoftInput(MainActivity.this);}});binding.btnStop.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {myRtsp.stop();}});}}

app的build.gradle

plugins {id 'com.android.application'
}android {compileSdk 32defaultConfig {applicationId "com.hisign.decodertsp"minSdk 23targetSdk 32versionCode 1versionName "1.0"ndkVersion "25.1.8937393"  // 指定 NDK 版本testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"externalNativeBuild {cmake {cppFlags '-std=c++11'}}ndk {abiFilters 'arm64-v8a','armeabi-v7a'//abiFilters 'armeabi-v7a'}}buildTypes {release {minifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'}}compileOptions {sourceCompatibility JavaVersion.VERSION_1_8targetCompatibility JavaVersion.VERSION_1_8}externalNativeBuild {cmake {path file('src/main/cpp/CMakeLists.txt')version '3.18.1'}}buildFeatures {viewBinding true}
}dependencies {implementation 'androidx.appcompat:appcompat:1.3.0'implementation 'com.google.android.material:material:1.4.0'implementation 'androidx.constraintlayout:constraintlayout:2.0.4'testImplementation 'junit:junit:4.13.2'androidTestImplementation 'androidx.test.ext:junit:1.1.3'androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'implementation 'com.blankj:utilcodex:1.31.1'
}

感谢：

原文链接：https://blog.csdn.net/weixin_46999174/article/details/140531411

编译完成后，会得到so文件  路径：      \app\build\intermediates\merged_native_libs\debug\out\lib

将so文件放在uniapp的示例项目中进行使用  

build.gradle中添加：

android{sourceSets{main{jniLibs.srcDirs = ["libs"]}}
}

编译完成，

路径：\uniplugin_component\build\outputs\aar  得到aar包

然后在项目中：

这样使用，就没问题了