iOS ffmpeg kxmovie 编译 调试 /最新 ffmpeg2.5.3/iOS SDK8.1/XCODE6.1/
仲孙小云
1.下载ffmpeg源码
ffmpeg官网下载最新tarball v.2.5.3
http://ffmpeg.org/download.html
或者你可以淘个history version
2. ffmpeg：直接编译or间接编译？
1）直接编译：
ffmpeg官方wiki对iOS 平台木有太大帮助
可以看看涨姿势
so..只能自己找bash编译
google被墙 但是git人品好
搜索 iOS build-ffmpeg
立马出几页脚本
找最新的
对各平台最新ios最新sdk最新ffmpeg都支持的
我用的是
https://github.com/kewlbear/FFmpeg-iOS-build-script
15/1/12 updated
平台：iOS SDK8.1/XCODE6.1/ffmpeg2.5.3
直接sh build-ffmpeg.sh
一马平川 无坚不摧
脚本写的很简洁 valuable
别的脚本年少无知的时候
都试过好几个
大多是出bug或者只能支持低版本
需要注意gas-preprocessor.pl这个pearl脚本非常重要
需要保证updated
可以在闹政变独立出来的libav的git主页找到
建议master版
https://github.com/libav/gas-preprocessor
1、拷贝gas-preprocessor.pl文件到 /usr/bin 和 /usr/local/bin 目录下。
2、修改gas-preprocessor.pl文件的权 使用 chmod a+rwx gas-preprocessor.pl
还有就是要下载yasm
用curl下载
sudo curl http://www.tortall.net/projects/yasm/releases/yasm-1.2.0.tar.gz >yasm.tar.gz
当然 可以直接进入release list下载tar ball
任何历史版本都有
http://www.tortall.net/projects/yasm/releases/
建议最新版
因为build-shell.sh要求yasm达到1.2 or later
不装yasm的后果是编译的时候会提示你
./configure --disable-yasm
当然这两步也不是必须的
因为咱有脚本～
脚本的作用就是帮你做你会疏忽的事儿
当你没做这些事的时候
bash会一步步去check configure
然后在shell运行的时候提出相应的建议
看看build-shell.sh就知道了～
2）间接编译
由于要做字幕控制播放进度
用kxmovie做模板
这个项目比较全能
里面的rakefile可以完成：
a)编译ffmpeg静态库
b)编译kxmovie静态库
c)编译kxmovie源码和测试项目
三项功能
所以学习大牛脚本非常重要
但是大牛往往写脚本都不注释
所以必须自己研读
读完之后还是非常清晰的
虽然众多task都没用上
对这份脚本做了customization
使得也能适配最新的ffmpeg2.5.3
当然个中过程曲折离奇
都说要选比较陈旧的版本编译
可以避免许多bugs
但是
非亲身体验新版
无法体会到编译的乐趣
我的定制在rakefile里都做了注释
大家可以参考
可惜的是想打包libass进去
但是貌似没有移动端的libass
字幕的问题日后在研究
3.编译kxmovie
KXMOVIE PLAYER:
https://github.com/kolyvan/kxmovie
由于调用了ffmpeg的静态库
而且kxmovie本身也调用超Q多库
所以过程非常曲折
由于有了N个开源播放器编译失败的经验
也见怪不怪
一点一点的trace
在改好rakefile之后可以直接调用里面的build_kxmovie_released
或者build_kxmovie_debug直接生成libkxmovie.a
按照readme.md里的示例代码并设置头文件和库路径之后
可以直接在第三方软件调用静态库
但是直接在kxmovie项目中有问题
xcode的特点就是几乎所有问题都是linker问题
1）爆了_logMessageF cannot be referenced
这个bug中的_logMessageF可以直接通过command+click找到
这就非常奇怪
后来在项目中的Pods/NSLogger/ios里找到源文件
把源文件添加到项目中就OK了
2）爆了 AVCaptureVideoDataOutput cannot be referenced
AVCaptureVideoDataOutput在项目中并未涉及
这是个libavdevice.a里的一个.m文件调用到的类
属于摄像头调用
在源码中引用了AVFoundation.h
所以 除了readme中提到的包
还要在项目中导入包含此头文件的framework
AVFoundation.framework
之后就OK了
综合整个过程是非常波折的
这里只表达了万一
各种调各种改
更多的反映在脚本中
这里要鸣谢妙心
http://blog.csdn.net/oqqQuZi1234567/article/details/43152689
这篇blog有很大的的启发
大家有疑问的欢迎交流
下面附上RakeFile
<span style="font-size:14px;">require "pathname"
require "fileutils"
def system_or_exit(cmd, stdout = nil)
puts "Executing #{cmd}"
cmd += " >#{stdout}" if stdout
system(cmd) or raise "******** Build failed ********"
end
## build ffmpeg
SDK_VERSION='8.1'
MIN_IOS_VERSION='7.0'
XCODE_PATH='/Applications/Xcode.app/Contents/Developer/Platforms'
GCC_PATH='/Applications/XCode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang'
LIB_PATH='/usr/lib/system'
GASPREP_DEST_PATH='/usr/local/bin'
PLATOFRM_PATH_SIM ='/iPhoneSimulator.platform'
PLATOFRM_PATH_IOS ='/iPhoneOS.platform'
SDK_PATH_SIM="/Developer/SDKs/iPhoneSimulator#{SDK_VERSION}.sdk"
SDK_PATH_IOS="/Developer/SDKs/iPhoneOS#{SDK_VERSION}.sdk"
SIM_SDK = 'iphonesimulator' + SDK_VERSION
IOS_SDK = 'iphoneos' + SDK_VERSION
FFMPEG_BUILD_ARGS_SIM = [
'--assert-level=2',
'--disable-mmx',
'--arch=i386',
'--cpu=i386',
"--extra-ldflags='-arch i386 -miphoneos-version-min=#{MIN_IOS_VERSION}'",
"--extra-cflags='-arch i386 -miphoneos-version-min=#{MIN_IOS_VERSION}'",
'--disable-asm',
]
#添加SDK根目录-isysroot
#修改MIN_IOS_VERSION对齐kxmovie
FFMPEG_BUILD_ARGS_ARMV7 = [
'--arch=arm',
'--cpu=cortex-a8',
'--enable-pic',
"--extra-cflags='-arch armv7 -miphoneos-version-min=#{MIN_IOS_VERSION}'",
"--extra-ldflags='-arch armv7 -miphoneos-version-min=#{MIN_IOS_VERSION}'",
"--extra-cflags='-mfpu=neon -mfloat-abi=softfp'",
'--enable-neon',
# '--disable-neon',
'--enable-optimizations',
'--disable-debug',
'--disable-armv5te',
'--disable-armv6',
'--disable-armv6t2',
'--enable-small',
]
#修改MIN_IOS_VERSION对齐kxmovie
FFMPEG_BUILD_ARGS_ARMV7S = [
'--arch=arm',
'--cpu=cortex-a9',
'--enable-pic',
"--extra-cflags='-arch armv7s -miphoneos-version-min=#{MIN_IOS_VERSION}'",
"--extra-ldflags='-arch armv7s -miphoneos-version-min=#{MIN_IOS_VERSION}'",
"--extra-cflags='-mfpu=neon -mfloat-abi=softfp'",
'--enable-neon',
# '--disable-neon',
'--enable-optimizations',
'--disable-debug',
'--disable-armv5te',
'--disable-armv6',
'--disable-armv6t2',
'--enable-small',
]
#修改MIN_IOS_VERSION对齐kxmovie
FFMPEG_BUILD_ARGS_ARM64 = [
'--arch=arm64',
# '--cpu=cortex-a9',
'--enable-pic',
"--extra-cflags='-arch arm64 -miphoneos-version-min=#{MIN_IOS_VERSION}'",
"--extra-ldflags='-arch arm64 -miphoneos-version-min=#{MIN_IOS_VERSION}'",
"--extra-cflags='-mfpu=neon -mfloat-abi=softfp'",
'--enable-neon',
# '--disable-neon',
'--enable-optimizations',
'--disable-debug',
'--disable-armv5te',
'--disable-armv6',
'--disable-armv6t2',
'--enable-small',
]
FFMPEG_BUILD_ARGS = [
'--disable-ffmpeg',
'--disable-ffplay',
'--disable-ffserver',
'--disable-ffprobe',
'--disable-doc',
'--disable-bzlib',
'--target-os=darwin',
'--enable-cross-compile',
#'--enable-nonfree',
# '--enable-gpl',
'--enable-version3',
]
#补全缺少的库
FFMPEG_LIBS = [
'libavcodec',
'libavformat',
'libavutil',
'libswscale',
'libswresample',
'libavfilter',
'libswscale',
'libavdevice',
]
def mkArgs(arch, platformPath, sdkPath, platformArgs)
#不必设定安装路径
#库和头文件会自动安装到/usr/local
#prefix = '--prefix=' + arch
cc = '--cc=' + GCC_PATH
#这个as是脚本gas-preprocessor.pl的地址，放到bin之后编译时并不需要
as = ""
sysroot = '--sysroot=' + XCODE_PATH + platformPath + sdkPath
#extra = '--extra-ldflags=-L' + XCODE_PATH + platformPath + sdkPath + LIB_PATH
args = FFMPEG_BUILD_ARGS + platformArgs
# args << prefix
args << cc
args << as
args << sysroot
args.join(' ')
end
#move改为copy
#新版本ffmpeg静态库之间有依赖,move之后会找不到库报错
def copyLibs(dest)
FFMPEG_LIBS.each do |x|
FileUtils.copy Pathname.new("FFmpeg/#{x}/#{x}.a"), dest
end
end
def ensureDir(path)
dest = Pathname.new path
if dest.exist?
FileUtils.rm Dir.glob("#{path}/*.a")
else
dest.mkpath
end
dest
end
def buildArch(arch)
case arch
when 'i386'
args = mkArgs(arch, PLATOFRM_PATH_SIM, SDK_PATH_SIM, FFMPEG_BUILD_ARGS_SIM)
when 'armv7'
args = mkArgs(arch, PLATOFRM_PATH_IOS, SDK_PATH_IOS, FFMPEG_BUILD_ARGS_ARMV7)
when 'armv7s'
args = mkArgs(arch, PLATOFRM_PATH_IOS, SDK_PATH_IOS, FFMPEG_BUILD_ARGS_ARMV7S)
when 'arm64'
args = mkArgs(arch, PLATOFRM_PATH_IOS, SDK_PATH_IOS, FFMPEG_BUILD_ARGS_ARM64)
else
raise "Build failed: unknown arch: #{arch}"
end
dest = ensureDir('FFmpeg/' + arch)
system_or_exit "cd FFmpeg; ./configure #{args}"
system_or_exit "cd FFmpeg; make"
copyLibs(dest)
system_or_exit "cd FFmpeg; [ -f -.d ] && rm -- -.d; make clean"
end
#补全lipo对各架构的支持，修改原-arch参数错误
def mkLipoArgs(lib)
"-create -arch armv7 armv7/#{lib}.a -arch armv7s armv7s/#{lib}.a -arch arm64 arm64/#{lib}.a -arch i386 i386/#{lib}.a -output universal/#{lib}.a"
end
desc "check gas-preprocessor.pl"
task :check_gas_preprocessor do
found = false
ENV['PATH'].split(':').each do |x|
p = Pathname.new(x) + 'gas-preprocessor.pl'
if p.exist? && p.writable?
found = true
break;
end
end
unless found
# See http://stackoverflow.com/questions/5056600/how-to-install-gas-preprocessor for more info.
puts "Installing the gas-preprocessor to #{GASPREP_DEST_PATH}"
FileUtils.move Pathname.new("gas-preprocessor/gas-preprocessor.pl"), Pathname.new(GASPREP_DEST_PATH)
system_or_exit "chmod +x #{GASPREP_DEST_PATH}/gas-preprocessor.pl"
# raise "Build failed: first install gas-preprocessor.pl.\nSee http://stackoverflow.com/questions/5056600/how-to-install-gas-preprocessor for more info."
end
end
desc "Clean ffmpeg"
task :clean_ffmpeg do
system_or_exit "cd FFmpeg; [ -f -.d ] && rm -- -.d; make clean"
end
desc "Build ffmpeg i386 libs"
task :build_ffmpeg_i386 do
buildArch('i386')
end
desc "Build ffmpeg armv7 libs"
task :build_ffmpeg_armv7 do
buildArch('armv7')
end
desc "Build ffmpeg armv7s libs"
task :build_ffmpeg_armv7s do
buildArch('armv7s')
end
desc "Build ffmpeg arm64 libs"
task :build_ffmpeg_arm64 do
buildArch('arm64')
end
#move改为copy
#新版本ffmpeg静态库之间有依赖,move之后会找不到库报错
desc "Build ffmpeg universal libs"
task :build_ffmpeg_universal do
dest = ensureDir('FFmpeg/universal/')
FFMPEG_LIBS.each do |x|
args = mkLipoArgs(x)
system_or_exit "cd FFmpeg; xcrun -sdk iphoneos lipo #{args}"
end
# FileUtils.cp 'FFmpeg/armv7/include/', dest
dest = ensureDir('libs/')
FFMPEG_LIBS.each do |x|
FileUtils.copy Pathname.new("FFmpeg/universal/#{x}.a"), dest
end
# FileUtils.cp 'FFmpeg/universal/include/', '.'
end
## build libkxmovie
def cleanMovieLib(config)
buildDir = Pathname.new 'tmp/build'
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration #{config} -sdk iphoneos#{SDK_VERSION} clean SYMROOT=#{buildDir}"
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration #{config} -sdk iphonesimulator#{SDK_VERSION} clean SYMROOT=#{buildDir}"
end
desc "Clean libkxmovie-debug"
task :clean_movie_debug do
cleanMovieLib 'Debug'
end
desc "Clean libkxmovie-release"
task :clean_movie_release do
cleanMovieLib 'Release'
end
#创建三个真机架构下的库文件和32位模拟器下的库文件
#我修改了目标目录
#删除模拟器库文件的-arch参数
#避免lipo爆错：architectures can't be specifed for fat input files
desc "Build libkxmovie-debug"
task :build_movie_debug do
buildDir = Pathname.new 'tmp/build'
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7"
FileUtils.move Pathname.new('tmp/build/Debug-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Debug-iphoneos/libkxmovie_armv7.a')
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7s"
FileUtils.move Pathname.new('tmp/build/Debug-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Debug-iphoneos/libkxmovie_armv7s.a')
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch arm64"
FileUtils.move Pathname.new('tmp/build/Debug-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Debug-iphoneos/libkxmovie_arm64.a')
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphonesimulator#{SDK_VERSION} build SYMROOT=#{buildDir}"
system_or_exit "lipo -create -arch armv7 tmp/build/Debug-iphoneos/libkxmovie_armv7.a -arch armv7s tmp/build/Debug-iphoneos/libkxmovie_armv7s.a -arch arm64 tmp/build/Debug-iphoneos/libkxmovie_arm64.a tmp/build/Debug-iphonesimulator/libkxmovie.a -output libs/libkxmovie.a"
end
#创建三个真机架构下的库文件和32位模拟器下的库文件
#我修改了目标目录
#删除模拟器库文件的-arch参数
#避免lipo爆错：architectures can't be specifed for fat input files
desc "Build libkxmovie-release"
task :build_movie_release do
buildDir = Pathname.new 'tmp/build'
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Release -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7"
FileUtils.move Pathname.new('tmp/build/Release-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Release-iphoneos/libkxmovie_armv7.a')
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Release -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch armv7s"
FileUtils.move Pathname.new('tmp/build/Release-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Release-iphoneos/libkxmovie_armv7s.a')
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Release -sdk iphoneos#{SDK_VERSION} build SYMROOT=#{buildDir} -arch arm64"
FileUtils.move Pathname.new('tmp/build/Release-iphoneos/libkxmovie.a'), Pathname.new('tmp/build/Release-iphoneos/libkxmovie_arm64.a')
system_or_exit "xcodebuild -project kxmovie.xcodeproj -target kxmovie -configuration Debug -sdk iphonesimulator#{SDK_VERSION} build SYMROOT=#{buildDir}"
system_or_exit "lipo -create -arch armv7 tmp/build/Release-iphoneos/libkxmovie_armv7.a -arch armv7s tmp/build/Release-iphoneos/libkxmovie_armv7s.a -arch arm64 tmp/build/Release-iphoneos/libkxmovie_arm64.a tmp/build/Debug-iphonesimulator/libkxmovie.a -output libs/libkxmovie.a"
end
#Deprecated by myself
desc "Copy to output folder"
task :copy_movie do
dest = ensureDir 'output'
FileUtils.move Pathname.new('tmp/build/libkxmovie.a'), dest
FileUtils.copy Pathname.new('libs/FFmpeg/libavcodec.a'), dest
FileUtils.copy Pathname.new('libs/FFmpeg/libavformat.a'), dest
FileUtils.copy Pathname.new('libs/FFmpeg/libavutil.a'), dest
FileUtils.copy Pathname.new('libs/FFmpeg/libswscale.a'), dest
FileUtils.copy Pathname.new('libs/FFmpeg/libswresample.a'), dest
FileUtils.copy Pathname.new('kxmovie/KxMovieViewController.h'), dest
FileUtils.copy Pathname.new('kxmovie/KxAudioManager.h'), dest
FileUtils.copy Pathname.new('kxmovie/KxMovieDecoder.h'), dest
FileUtils.copy_entry Pathname.new('kxmovie/kxmovie.bundle'), dest + 'kxmovie.bundle'
end
##
task :clean => [:clean_movie_debug, :clean_movie_release, :clean_ffmpeg]
task :build_ffmpeg => [:check_gas_preprocessor, :build_ffmpeg_armv7, :build_ffmpeg_armv7s, :build_ffmpeg_arm64, :build_ffmpeg_i386, :build_ffmpeg_universal]
#task :build_movie => [:build_movie_debug, :copy_movie]
task :build_movie => [:build_movie_release, :copy_movie]
task :build_all => [:build_ffmpeg, :build_movie]
# task :default => [:build_all]
#自定义的入口,可DIY
task :default => [:build_ffmpeg, :build_movie_release]
</span>
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