{"id":1580,"date":"2024-09-18T07:40:02","date_gmt":"2024-09-18T07:40:02","guid":{"rendered":"http:\/\/www.recologypower.com:9080\/?p=1580"},"modified":"2024-09-18T07:40:03","modified_gmt":"2024-09-18T07:40:03","slug":"%e3%80%90ffmpeg%e3%80%91%e4%ba%94%e3%80%81android%e4%bd%bf%e7%94%a8ffmpeg-so","status":"publish","type":"post","link":"http:\/\/www.recologypower.com:9080\/?p=1580","title":{"rendered":"\u3010ffmpeg\u3011\u4e94\u3001android\u4f7f\u7528ffmpeg.so"},"content":{"rendered":"\n

\u524d\u8a00\uff1a\u7ecf\u8fc7\u524d\u51e0\u7bc7\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u5df2\u7ecf\u638c\u63e1\u5728linux\u4e0b\u7f16\u8bd1ffmpeg.so\u3002\u6211\u4eec\u7f16\u8bd1\u51faso\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u80fd\u591f\u4f7f\u7528so\u8fbe\u5230\u4f7f\u7528ffmpeg\u76f8\u5173\u529f\u80fd\u7684\u76ee\u7684\u3002\u672c\u7bc7\u4ecb\u7ecd\u5982\u4f55\u5728android\u4e0a\u4f7f\u7528ffmpeg\u7684so\u5e93\u7684\u57fa\u7840\u529f\u80fd\u3002\u672c\u6587\u8981\u6c42\u8bfb\u8005\u6709\u4e00\u5b9a\u7684jni\u57fa\u7840\u3002<\/p>\n\n\n\n

\u672c\u6587\u5f00\u53d1\u73af\u5883\uff1a<\/p>\n\n\n\n

ffmpeg\u7248\u672c\uff1affmpeg4.2.2<\/p>\n\n\n\n

androidStudio\uff1a2022.1.1 Patch 1\uff1bgradle\u7248\u672c\uff1a7.4.1\uff1bndk21\uff08\u5fc5\u987b\u8981\u6709ndk\u73af\u5883\uff09<\/p>\n\n\n\n

\u4e00\u3001androidStudio\u65b0\u5efajni\uff08C++\uff09\u9879\u76ee<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u4e8c\u3001\u5bfc\u5165linux\u751f\u6210\u7684ffmepg\u76847\u4e2aso\u6587\u4ef6\u548c\u5934\u6587\u4ef6<\/h2>\n\n\n\n

1\u3001\u5728libs\u76ee\u5f55\u4e0b\u65b0\u5efa\u6587\u4ef6\u5939arm64-v8a\uff08\u672c\u6587\u53ea\u5f15\u5165arm64-v8a\u7248\u672c\uff0c\u8bfb\u8005\u53ef\u4ee5\u53c2\u7167\u81ea\u884c\u5f15\u5165armeabi-v7a\u7248\u672c\uff09\uff0c\u5728\u5176\u4e2d\u590d\u5236\u8fdb\u6765ffmepg\u76f8\u5173\u76847\u4e2aso\u6587\u4ef6\uff0c\u5728cpp\u76ee\u5f55\u4e0b\u5bfc\u5165include\u7684C\u5934\u6587\u4ef6\uff1a<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u00a02\u3001\u7f16\u8f91CMakeLists.txt\u8054\u7f16\u811a\u672c<\/strong><\/p>\n\n\n\n

cmake_minimum_required(VERSION 3.22.1)\r\n#\u81ea\u52a8\u751f\u6210\uff0c\u81ea\u5df1\u7684\u9879\u76ee\u540d\r\nproject(\"ffmpegndk\")\r\n \r\nmessage(\"start............................................................\")\r\n# 1. \u5b9a\u4e49so\u5e93\u548c\u5934\u6587\u4ef6\u6240\u5728\u76ee\u5f55\u76f8\u5bf9\u4e0e\u811a\u672c\u7684\u4f4d\u7f6e\u7684\u53d8\u91cf\uff0c\u65b9\u9762\u540e\u9762\u4f7f\u7528\r\nset(ffmpeg_lib_dir_neway ${CMAKE_SOURCE_DIR}\/..\/..\/..\/libs\/${ANDROID_ABI})\r\nset(ffmpeg_head_dir ${CMAKE_SOURCE_DIR}\/include)\r\n \r\n# 2. \u6dfb\u52a0\u5934\u6587\u4ef6\u76ee\u5f55\r\ninclude_directories(${ffmpeg_head_dir})\r\n \r\n#==========================ffmpeg\u5f15\u5165\u5f00\u59cb====================================\r\n#add_library\uff08\u914d\u7f6e\u6a21\u5757so\u5e93\u7f16\u8bd1\u4fe1\u606f\uff09\uff0cset_target_properties\uff08\u4e3a\u76ee\u6807\u914d\u7f6e\u7f16\u8bd1\u5c5e\u6027\uff09\uff0c\u5bf9\u4e8e\u4e09\u65b9so\uff0c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u8981\u6210\u5bf9\u51fa\u73b0\r\nadd_library( avcodec\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        avcodec\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libavcodec.so)\r\n \r\nadd_library( avdevice\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        avdevice\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libavdevice.so)\r\n \r\nadd_library( avfilter\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        avfilter\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libavfilter.so)\r\n \r\nadd_library( avformat\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        avformat\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libavformat.so)\r\n \r\nadd_library( avutil\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        avutil\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libavutil.so)\r\n \r\nadd_library( swresample\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        swresample\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libswresample.so)\r\n \r\nadd_library( swscale\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        swscale\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libswscale.so)\r\n#==========================ffmpeg\u5f15\u5165\u7ed3\u675f====================================\r\n \r\n#\u5bf9\u6700\u540e\u4e00\u4e2a\u81ea\u5df1\u7684so\uff08\u540d\u79f0\u53ef\u4ee5\u81ea\u5b9a\u4e49\uff09\uff0c\u4e0d\u9700\u8981\u518dset_target_properties\u3002\u8fd9\u4e2aso\u6700\u7ec8\u4f1a\u751f\u6210\u5230build\u4e2d\u3002\r\nadd_library(\r\n        ffmpegNdkCustom\r\n        SHARED\r\n        native-lib.cpp)\r\n \r\n#\u67e5\u627e\u4ee3\u7801\u4e2d\u4f7f\u7528\u5230\u7684android\u7cfb\u7edf\u9884\u7559\uff08\u9884\u6784\u5efa\uff09\u5e93(\u5982log\u3001zlib\u538b\u7f29\u5e93\u7b49)\r\nfind_library(\r\n        log-lib\r\n        log)\r\n \r\n#\u6307\u5b9a\u7f16\u8bd1\u6700\u7ec8\u76ee\u6807\u5e93\u65f6\uff0ccmke\u8981\u94fe\u63a5\u7684\u5e93\u3002\r\n#\u89e3\u91ca\uff1a\u4e00\u822c\u5f62\u5f0f\u662f\uff1atarget_link_libraries(your-lib library1 library2 ...)\r\ntarget_link_libraries(\r\n        #\u6307\u5b9a\u76ee\u6807\u5e93\r\n        ffmpegNdkCustom\r\n        #\u8fde\u63a5 FFmpeg \u76f8\u5173\u7684\u5e93\r\n        avcodec\r\n        avdevice\r\n        avfilter\r\n        avformat\r\n        avutil\r\n        swresample\r\n        swscale\r\n        ${log-lib})<\/code><\/pre>\n\n\n\n
\u00a03\u3001\u7f16\u8f91native-lib.cpp\u6587\u4ef6\uff0c\u7f16\u5199native\u65b9\u6cd5\u3002<\/strong><\/p>\n\n\n\n
\u4e0b\u9762\u7684 stringFromJNI \u662f\u9879\u76ee\u9ed8\u8ba4\u5e2e\u6211\u4eec\u751f\u6210\u7684\u9ed8\u8ba4\u65b9\u6cd5\uff0cgetConfiguration\u662f\u6211\u4eec\u6d4b\u8bd5ffmpeg\u83b7\u53d6\u7248\u672c\u53f7\u7684\u4e00\u4e2a\u65b9\u6cd5<\/p>\n\n\n\n
#include <jni.h>\r\n#include <string>\r\nextern \"C\" {\r\n#include \"libavcodec\/avcodec.h\"\r\n}\r\n \r\nextern \"C\" JNIEXPORT jstring JNICALL\r\nJava_com_neway_ffmpegndk_MainActivity_stringFromJNI(\r\n        JNIEnv* env,\r\n        jobject \/* this *\/) {\r\n    std::string hello = \"Hello from C++\";\r\n    return env->NewStringUTF(hello.c_str());\r\n}\r\n \r\nextern \"C\"\r\nJNIEXPORT jstring JNICALL\r\nJava_com_neway_ffmpegndk_MainActivity_getConfiguration(JNIEnv *env, jobject thiz) {\r\n    return env->NewStringUTF(avcodec_configuration());\r\n}<\/code><\/pre>\n\n\n\n
\u4e09\u3001app\u4e2d\u4f7f\u7528<\/h2>\n\n\n\n
1\u3001\u4fee\u6539MainActivity\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
package com.neway.ffmpegndk;\r\n \r\nimport androidx.appcompat.app.AppCompatActivity;\r\n \r\nimport android.os.Bundle;\r\nimport android.widget.TextView;\r\n \r\nimport com.neway.ffmpegndk.databinding.ActivityMainBinding;\r\npublic class MainActivity extends AppCompatActivity {\r\n    \/\/\u7528\u4e8e\u5728\u7a0b\u5e8f\u542f\u52a8\u65f6\u52a0\u8f7dcmake\u7f16\u8bd1\u597d\u7684\u76ee\u6807\u5e93ffmpegNdkCustom.so\uff0c\u6ce8\u610f\u5927\u5c0f\u5199\r\n    static {\r\n        System.loadLibrary(\"ffmpegNdkCustom\");\r\n    }\r\n \r\n    private ActivityMainBinding binding;\r\n \r\n    @Override\r\n    protected void onCreate(Bundle savedInstanceState) {\r\n        super.onCreate(savedInstanceState);\r\n        binding = ActivityMainBinding.inflate(getLayoutInflater());\r\n        setContentView(binding.getRoot());\r\n        TextView tv = binding.sampleText;\r\n        \/\/tv.setText(stringFromJNI());\r\n        tv.setText(getConfiguration());\r\n    }\r\n \r\n    \/**\r\n     * \u5728 ffmpegNdkCustom.so \u5e93\u4e2d\u58f0\u660e\u7684\u539f\u751fc++\u7684native\u65b9\u6cd5\uff0c\u8d77\u8fde\u63a5\u4f5c\u7528\r\n     *\/\r\n    public native String stringFromJNI();\r\n    public native String getConfiguration();\r\n}<\/code><\/pre>\n\n\n\n
2\u3001\u4fee\u6539app\u7ea7\u522b\u7684build.gradle\u6587\u4ef6\uff0c\u7528\u4ee5\u4f7fapp\u652f\u6301arm64-v8a\u67b6\u6784\uff1a<\/p>\n\n\n\n
android {\r\n    namespace 'com.neway.ffmpegndk'\r\n    compileSdk 33\r\n \r\n    defaultConfig {\r\n        applicationId \"com.neway.ffmpegndk\"\r\n        minSdk 21\r\n        targetSdk 33\r\n        versionCode 1\r\n        versionName \"1.0\"\r\n        testInstrumentationRunner \"androidx.test.runner.AndroidJUnitRunner\"\r\n        externalNativeBuild {\r\n            cmake {\r\n                cppFlags \"\"\r\n                abiFilters 'arm64-v8a'\/\/,'armeabi-v7a'\/\/,'x86'\uff0c'arm64-v8a',\r\n            }\r\n        }\r\n    }\r\n    ...\r\n}<\/code><\/pre>\n\n\n\n
3\u3001\u8fd0\u884c\uff08\u56e0\u4e3a\u6307\u5b9a\u4e86arm64-v8a\u67b6\u6784\uff0c\u6545\u4e0d\u80fd\u5728\u7535\u8111\u6a21\u62df\u5668\u4e0a\u8fd0\u884c\uff0c\u9700\u8981\u771f\u673a\uff0c\u7535\u8111\u6a21\u62df\u5668\u9700\u8981\u7f16\u8bd1\u4f7f\u7528x86\u67b6\u6784\u7684\uff09\uff0c\u5373\u5c55\u793a\u4e86\u6211\u4eec\u7684ffmpeg\u7248\u672c\u53f7\uff1a<\/p>\n\n\n\n
4\u3001\u6b64\u65f6\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u89c2\u5bdf\u4e0b\uff0ccmake\u8054\u7f16\u7684\u76ee\u6807so\u540c\u65f6\u4e5f\u751f\u6210\u5728\u4e86\u6211\u4eec\u7684build\u76ee\u5f55\u4e0b\uff1a<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u540e\u8bb0\uff1a<\/p>\n\n\n\n
\u672c\u6587\u4f7f\u7528\u4e86ffmpeg\u672a\u5408\u5e76\u76847\u4e2aso\u6587\u4ef6\u65b9\u5f0f\uff0c\u5f53\u7136\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5408\u5e76so\uff08\u89c1\u7cfb\u5217\u6587\u7ae0\u7b2c\u56db\u7bc7ffmpeg\u4e13\u8f91(\u56db):linux\u7f16\u8bd1ffmpeg.so\u5408\u5e76so\u7bc7<\/a>\uff09\u540e\u7684ffmpeg.so\u6587\u4ef6\uff0c\u6b64\u65f6libs\u6587\u4ef6\u5939\u548ccmake\u8054\u7f16\u6587\u4ef6\u9700\u8981\u53d8\u66f4\uff0c\u5176\u4f59\u5730\u65b9\u4fdd\u6301\u4e0d\u53d8\uff1a<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
cmake_minimum_required(VERSION 3.22.1)\r\n \r\nproject(\"ffmpegndk\")\r\n \r\nmessage(\"start............................................................\")\r\n# 1. \u5b9a\u4e49so\u5e93\u548c\u5934\u6587\u4ef6\u6240\u5728\u76ee\u5f55\uff0c\u65b9\u9762\u540e\u9762\u4f7f\u7528\r\nset(ffmpeg_lib_dir_neway ${CMAKE_SOURCE_DIR}\/..\/..\/..\/libs\/${ANDROID_ABI})\r\nset(ffmpeg_head_dir ${CMAKE_SOURCE_DIR}\/include)\r\n \r\n# 2. \u6dfb\u52a0\u5934\u6587\u4ef6\u76ee\u5f55\r\ninclude_directories(${ffmpeg_head_dir})\r\n \r\n#==========================ffmpeg\u5f15\u5165\u5f00\u59cb====================================\r\n#ffmpegsofile\u4e3a\u81ea\u5b9a\u4e49\u540d\u79f0\uff0clibffmpeg.so\u662flibs\u76ee\u5f55\u4e0b\u7684linux\u7f16\u8bd1\u51fa\u7684so\u6587\u4ef6\r\nadd_library( ffmpegsofile\r\n        SHARED\r\n        IMPORTED)\r\nset_target_properties(\r\n        ffmpegsofile\r\n        PROPERTIES IMPORTED_LOCATION\r\n        ${ffmpeg_lib_dir_neway}\/libffmpeg.so)\r\n#==========================ffmpeg\u5f15\u5165\u7ed3\u675f====================================\r\n \r\n#\u5bf9\u6700\u540e\u4e00\u4e2a\u81ea\u5df1\u7684so\uff0c\u4e0d\u9700\u8981\u518dset_target_properties\u3002\u8fd9\u4e2aso\u6700\u7ec8\u4f1a\u751f\u6210\u5230build\u4e2d\u3002\r\nadd_library(\r\n        ffmpegNdkCustom\r\n        SHARED\r\n        native-lib.cpp)\r\n \r\nfind_library(\r\n        log-lib\r\n        log)\r\n \r\ntarget_link_libraries(\r\n        #\u6307\u5b9a\u76ee\u6807\u5e93\r\n        ffmpegNdkCustom\r\n        #\u8fde\u63a5 FFmpeg \u76f8\u5173\u7684\u5e93\r\n        ffmpegsofile\r\n        ${log-lib})<\/code><\/pre>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\n
\u524d\u8a00\uff1a\u7ecf\u8fc7\u524d\u51e0\u7bc7\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u5df2\u7ecf\u638c\u63e1\u5728l<\/h3>\n<\/div>\n
\u9605\u8bfb\u66f4\u591a<\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[154],"tags":[],"_links":{"self":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1580"}],"collection":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1580"}],"version-history":[{"count":1,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1580\/revisions"}],"predecessor-version":[{"id":1586,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1580\/revisions\/1586"}],"wp:attachment":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1580"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}