项目搭建
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6
.gitignore
vendored
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6
.gitignore
vendored
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/.vscode
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/build
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/node_modules
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/thirdpart/_source
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/thirdpart/FFmpeg
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/package-lock.json
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96
CMakeLists.txt
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96
CMakeLists.txt
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cmake_minimum_required(VERSION 3.10.0)
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project(ai-box VERSION 0.1.0 LANGUAGES C CXX)
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set(CMAKE_CXX_STANDARD 17)
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if (POLICY CMP0091)
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cmake_policy(SET CMP0091 NEW)
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endif (POLICY CMP0091)
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if(NOT DEFINED CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Release)
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endif()
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set(NODE_ADDON_FOUND OFF)
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include_directories(cxx)
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# FFmpeg
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set(FFMPEG_CMAKE_FILE ${CMAKE_SOURCE_DIR}/thirdpart/FFmpeg/config.cmake)
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if(EXISTS ${FFMPEG_CMAKE_FILE})
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include(${FFMPEG_CMAKE_FILE})
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message(STATUS "FFMPEG_LIB_DIR: ${FFMPEG_LIB_DIR}")
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message(STATUS "FFMPEG_INCLUDE_DIR: ${FFMPEG_INCLUDE_DIR}")
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message(STATUS "FFMPEG_LIBS: ${FFMPEG_LIBS}")
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include_directories(${FFMPEG_INCLUDE_DIR})
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link_directories(${FFMPEG_LIB_DIR})
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else()
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message(FATAL_ERROR "FFmpeg not found")
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endif()
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# NodeJS
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execute_process(
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COMMAND node ${CMAKE_SOURCE_DIR}/thirdpart/cmake-js-util.js --include
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RESULT_VARIABLE CMAKE_JS_RESULT
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OUTPUT_VARIABLE CMAKE_JS_INC
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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if(CMAKE_JS_RESULT EQUAL 0)
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execute_process(
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COMMAND node ${CMAKE_SOURCE_DIR}/thirdpart/cmake-js-util.js --src
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RESULT_VARIABLE CMAKE_JS_RESULT
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OUTPUT_VARIABLE CMAKE_JS_SRC
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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if(CMAKE_JS_RESULT EQUAL 0)
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execute_process(
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COMMAND node ${CMAKE_SOURCE_DIR}/thirdpart/cmake-js-util.js --lib
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RESULT_VARIABLE CMAKE_JS_RESULT
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OUTPUT_VARIABLE CMAKE_JS_LIB
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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endif()
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# ReleaseVersion
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if(CMAKE_JS_RESULT EQUAL 0)
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execute_process(
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COMMAND node ${CMAKE_SOURCE_DIR}/thirdpart/cmake-js-util.js --release
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RESULT_VARIABLE CMAKE_JS_RESULT
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OUTPUT_VARIABLE RELEASE_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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if(CMAKE_JS_RESULT EQUAL 0)
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message(STATUS "RELEASE_VERSION: ${RELEASE_VERSION}")
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add_compile_definitions(RELEASE_VERSION="${RELEASE_VERSION}")
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endif()
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endif()
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# NAPI
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if(CMAKE_JS_RESULT EQUAL 0)
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execute_process(
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COMMAND node ${CMAKE_SOURCE_DIR}/thirdpart/cmake-js-util.js --napi
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RESULT_VARIABLE CMAKE_JS_RESULT
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OUTPUT_VARIABLE NODE_ADDON_API_DIR
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)
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endif()
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if(CMAKE_JS_RESULT EQUAL 0)
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message(STATUS "CMAKE_JS_INC: ${CMAKE_JS_INC}")
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message(STATUS "CMAKE_JS_SRC: ${CMAKE_JS_SRC}")
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message(STATUS "CMAKE_JS_LIB: ${CMAKE_JS_LIB}")
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message(STATUS "NODE_ADDON_API_DIR: ${NODE_ADDON_API_DIR}")
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include_directories(${CMAKE_JS_INC} ${NODE_ADDON_API_DIR})
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set(NODE_ADDON_FOUND ON)
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endif()
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endif()
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if(NOT (CMAKE_JS_RESULT EQUAL 0))
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message(FATAL_ERROR "cmake js config failed")
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endif()
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# 平台特定的库
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if(MSVC)
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set(PLATFORM_LIBS ws2_32 winmm strmiids mfplat mfuuid Ws2_32 Secur32 Bcrypt)
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endif()
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include_directories(thirdpart/FFmpeg/include)
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link_directories(thirdpart/FFmpeg/lib)
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add_executable(ffmpeg cxx/main.cc)
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target_link_libraries(ffmpeg ${PLATFORM_LIBS} ${FFMPEG_LIBS})
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25
README.md
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25
README.md
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## Windows下的FFmpeg 编译
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1. 安装msys2
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从 https://www.msys2.org 下载Windows安装包进行安装。
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1. 安装 Visual Studio Build Tools
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1. 打开构建工具(x64)，并启动msys2。
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可以在msys2的安装目录下新建一个`msvc_build.bat`,并输入以下内容：
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```
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call "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvars64.bat"
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msys2_shell.cmd -mingw64
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```
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1. 安装依赖库
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1. 编译项目
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在msys2中执行：
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```
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cd /path/to/project
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node thirdpart/build_ffmpeg_win.js
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```
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28
cxx/main.cc
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28
cxx/main.cc
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#include <iostream>
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// #pragma comment(lib, "ws2_32.lib")
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// #pragma comment(lib, "winmm.lib")
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// #pragma comment(lib, "strmiids")
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// #pragma comment(lib, "mfplat")
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// #pragma comment(lib, "mfuuid")
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// #pragma comment(lib, "Ws2_32")
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// #pragma comment(lib, "Secur32")
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// #pragma comment(lib, "Bcrypt")
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include <libavformat/avformat.h>
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#ifdef __cplusplus
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}
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#endif
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int main(int, char **)
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{
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AVFormatContext *ifmt_ctx = nullptr;
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if (avformat_open_input(&ifmt_ctx, "http://vjs.zencdn.net/v/oceans.mp4", nullptr, nullptr) < 0)
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printf("avformat_open_input failed\n");
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printf("nb_stream=%d\n", ifmt_ctx->nb_streams);
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std::cout << "Hello, from ffmpeg!\n";
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}
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20
package.json
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20
package.json
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{
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"name": "@yizhi/ffmpeg",
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"version": "1.0.1",
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"releaseVersion": "1.0.1",
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"main": "dist/index.js",
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"types": "typing/index.d.ts",
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"scripts": {
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"build": "rm -rf dist typing && tsc",
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"watch": "tsc -w --inlineSourceMap"
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},
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"keywords": [],
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"author": "",
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"license": "ISC",
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"description": "",
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"devDependencies": {
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"@types/node": "^22.13.5",
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"cmake-js": "^7.3.0",
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"node-addon-api": "^8.3.1"
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}
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}
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82
thirdpart/build_ffmpeg_win.js
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82
thirdpart/build_ffmpeg_win.js
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const { spawnSync } = require("child_process");
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const fs = require("fs");
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const path = require("path");
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const os = require("os");
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const FFMPEG_REPO = "https://git.ffmpeg.org/ffmpeg.git";
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const FFMPEG_TAG = "release/7.1"
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const FFMPEG_SOURCE_DIR = path.join(__dirname, "_source/FFmpeg");
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const FFMPEG_INSTALL_DIR = path.join(__dirname, "FFmpeg");
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function checkEnv() {
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if (!process.env.MSYSTEM_PREFIX) throw new Error("Please use msys2 environment to run this script");
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const bash = process.env.SHELL;
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if (!bash || !bash.endsWith("bash.exe")) throw new Error("bash.exe is not found in environments");
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}
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function download() {
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console.log("Downloading ffmpeg source...");
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if (0 != spawnSync("git", [
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"clone", FFMPEG_REPO,
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"-b", FFMPEG_TAG, FFMPEG_SOURCE_DIR
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], { stdio: "inherit" }).status) throw new Error("Failed to download ffmpeg");
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}
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function build() {
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//configure
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if (!fs.existsSync(path.join(FFMPEG_SOURCE_DIR, "ffbuild/config.mak"))) {
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console.log("Configuring ffmpeg...");
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if (0 != spawnSync(process.env.SHELL, [
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path.join(FFMPEG_SOURCE_DIR, "configure"),
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`--prefix=${FFMPEG_INSTALL_DIR}`,
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"--enable-static",
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"--enable-small",
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"--toolchain=msvc",
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"--disable-programs",
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], { stdio: "inherit", cwd: FFMPEG_SOURCE_DIR }).status) throw new Error("Failed to configure ffmpeg");
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}
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//make
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if (0 != spawnSync("make", [
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"-j", os.cpus().length.toString(),
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], { stdio: "inherit" }).status) throw new Error("Failed to build ffmpeg");
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//install
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if (0 != spawnSync("make", [
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"install",
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], { stdio: "inherit", cwd: FFMPEG_SOURCE_DIR }).status) throw new Error("Failed to install ffmpeg");
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}
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function resolve() {
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console.log("Resolving ffmpeg ...");
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const libs = [];
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for (const file of fs.readdirSync(path.join(FFMPEG_INSTALL_DIR, "lib"))) {
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if (path.extname(file) == ".a") {
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const libName = file.replace(/\.a$/, "").replace(/^lib/, "");
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fs.renameSync(path.join(FFMPEG_INSTALL_DIR, "lib", file), path.join(FFMPEG_INSTALL_DIR, "lib", libName + ".lib"));
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libs.push(libName);
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}
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}
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fs.writeFileSync(path.join(FFMPEG_INSTALL_DIR, "config.cmake"), [
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"set(FFMPEG_INCLUDE_DIR ${CMAKE_CURRENT_LIST_DIR}/include)",
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"set(FFMPEG_LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/lib)",
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`set(FFMPEG_LIBS ${libs.join(" ")})`,
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"",
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].join("\n"));
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}
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async function main() {
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fs.mkdirSync(path.dirname(FFMPEG_SOURCE_DIR), { recursive: true });
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fs.mkdirSync(path.dirname(FFMPEG_INSTALL_DIR), { recursive: true });
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checkEnv();
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if (!fs.existsSync(path.join(FFMPEG_SOURCE_DIR, "configure"))) download();
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if (!fs.existsSync(path.join(FFMPEG_INSTALL_DIR, "config.cmake"))) {
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build();
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resolve();
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}
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console.log(`FFmpeg build done !`);
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}
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main().catch(err => console.error(err.message));
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19
thirdpart/cmake-js-util.js
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19
thirdpart/cmake-js-util.js
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const os = require("os");
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const path = require("path");
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const { execSync, spawnSync, exec } = require("child_process");
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const args = process.argv.slice(2);
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const cmakeJS = path.join(__dirname, "../node_modules/.bin/cmake-js")
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function runCmakeJS(args) {
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const child = exec(`${cmakeJS} ${args.join(" ")}`, (err, stdout, stderr) => console.log(stdout));
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child.once("close", code => process.exit(code));
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}
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if (args.includes("--include")) runCmakeJS(["print-cmakejs-include"]);
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else if (args.includes("--src")) runCmakeJS(["print-cmakejs-src"]);
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else if (args.includes("--lib")) runCmakeJS(["print-cmakejs-lib"]);
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else if (args.includes("--napi")) console.log(require("node-addon-api").include.replace(/^"/, "").replace(/"$/, ""));
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else if (args.includes("--release")) console.log(require("../package.json").releaseVersion);
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