ijkPlayer|ijkPlayer 编译ffmpeg脚本分析 ijkPlayer编译ffmpeg脚本分析

在看ijkPlayer源码的时候,发现ijkPlayer编译出来的ffmpeg库和别人的不一样,因此这里特此想分析下脚本编译
init-ios.sh

#! /usr/bin/env bash # # Copyright (C) 2013-2015 Bilibili # Copyright (C) 2013-2015 Zhang Rui # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # #http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. ## IJK_FFMPEG_UPSTREAM=git://git.videolan.org/ffmpeg.git IJK_FFMPEG_UPSTREAM=https://github.com/Bilibili/FFmpeg.git IJK_FFMPEG_FORK=https://github.com/Bilibili/FFmpeg.git IJK_FFMPEG_COMMIT=ff3.4--ijk0.8.7--20180103--001 IJK_FFMPEG_LOCAL_REPO=extra/ffmpegIJK_GASP_UPSTREAM=https://github.com/Bilibili/gas-preprocessor.git# gas-preprocessor backup # https://github.com/Bilibili/gas-preprocessor.gitif [ "$IJK_FFMPEG_REPO_URL" != "" ]; then IJK_FFMPEG_UPSTREAM=$IJK_FFMPEG_REPO_URL IJK_FFMPEG_FORK=$IJK_FFMPEG_REPO_URL fiif [ "$IJK_GASP_REPO_URL" != "" ]; then IJK_GASP_UPSTREAM=$IJK_GASP_REPO_URL fiset -e TOOLS=toolsFF_ALL_ARCHS_IOS6_SDK="armv7 armv7s i386" FF_ALL_ARCHS_IOS7_SDK="armv7 armv7s arm64 i386 x86_64" FF_ALL_ARCHS_IOS8_SDK="armv7 arm64 i386 x86_64" FF_ALL_ARCHS=$FF_ALL_ARCHS_IOS8_SDK FF_TARGET=$1function echo_ffmpeg_version() { echo $IJK_FFMPEG_COMMIT }function pull_common() { git --version echo "== pull gas-preprocessor base ==" sh $TOOLS/pull-repo-base.sh $IJK_GASP_UPSTREAM extra/gas-preprocessorecho "== pull ffmpeg base ==" sh $TOOLS/pull-repo-base.sh $IJK_FFMPEG_UPSTREAM $IJK_FFMPEG_LOCAL_REPO }function pull_fork() { echo "== pull ffmpeg fork $1 ==" sh $TOOLS/pull-repo-ref.sh $IJK_FFMPEG_FORK ios/ffmpeg-$1 ${IJK_FFMPEG_LOCAL_REPO} cd ios/ffmpeg-$1 git checkout ${IJK_FFMPEG_COMMIT} -B ijkplayer cd - }function pull_fork_all() { for ARCH in $FF_ALL_ARCHS do pull_fork $ARCH done }function sync_ff_version() { sed -i '' "s/static const char \*kIJKFFRequiredFFmpegVersion\ \=\ .*/static const char *kIJKFFRequiredFFmpegVersion = \"${IJK_FFMPEG_COMMIT}\"; /g" ios/IJKMediaPlayer/IJKMediaPlayer/IJKFFMoviePlayerController.m }#---------- case "$FF_TARGET" in ffmpeg-version) echo_ffmpeg_version ; ; armv7|armv7s|arm64|i386|x86_64) pull_common pull_fork $FF_TARGET ; ; all|*) pull_common pull_fork_all ; ; esac sync_ff_version

首先,我们从ijkPlayer 中首先要先运行init-ios.sh脚本.因此这里分段分析该脚本

IJK_FFMPEG_UPSTREAM=https://github.com/Bilibili/FFmpeg.git IJK_FFMPEG_FORK=https://github.com/Bilibili/FFmpeg.git IJK_FFMPEG_COMMIT=ff3.4--ijk0.8.7--20180103--001 IJK_FFMPEG_LOCAL_REPO=extra/ffmpeg IJK_GASP_UPSTREAM=https://github.com/Bilibili/gas-preprocessor.git

声明变量
IJK_FFMPEG_UPSTREAM 和IJK_FFMPEG_FORK 指向ffmpeg git地址
IJK_FFMPEG_LOCAL_REPO 应该是下载到本地的地址
IJK_GASP_UPSTREAM 是编译需要的一个汇编工具地址.
IJK_FFMPEG_COMMIT ffmeng提交的节点

if [ "$IJK_FFMPEG_REPO_URL" != "" ]; then IJK_FFMPEG_UPSTREAM=$IJK_FFMPEG_REPO_URL IJK_FFMPEG_FORK=$IJK_FFMPEG_REPO_URL fiif [ "$IJK_GASP_REPO_URL" != "" ]; then IJK_GASP_UPSTREAM=$IJK_GASP_REPO_URL fi

判断是否配置了IJK_FFMPEG_REPO_URL (ffmpeg的地址)
判断是否配置了IJK_GASP_REPO_URL(汇编工具地址)

set -e TOOLS=tools

你写的每个脚本都应该在文件开头加上set -e,这句语句告诉bash如果任何语句的执行结果不是true则应该退出。

FF_ALL_ARCHS_IOS6_SDK="armv7 armv7s i386" FF_ALL_ARCHS_IOS7_SDK="armv7 armv7s arm64 i386 x86_64" FF_ALL_ARCHS_IOS8_SDK="armv7 arm64 i386 x86_64" FF_ALL_ARCHS=$FF_ALL_ARCHS_IOS8_SDK

定义ios的不同sdk对应的不通结构体.这里默认使用的是ios8的结构体

FF_TARGET=$1

获取传入进来的第一个参数

function echo_ffmpeg_version() { echo $IJK_FFMPEG_COMMIT }

该函数获取打印版本

function pull_common() { git --version echo "== pull gas-preprocessor base ==" sh $TOOLS/pull-repo-base.sh $IJK_GASP_UPSTREAM extra/gas-preprocessorecho "== pull ffmpeg base ==" sh $TOOLS/pull-repo-base.sh $IJK_FFMPEG_UPSTREAM $IJK_FFMPEG_LOCAL_REPO }

该函数就是下载gas-preprocessor 到extra/gas-preprocessor中
下载ffmpeg 到extra/ffmpeg 中

function pull_fork() { echo "== pull ffmpeg fork $1 ==" sh $TOOLS/pull-repo-ref.sh $IJK_FFMPEG_FORK ios/ffmpeg-$1 ${IJK_FFMPEG_LOCAL_REPO} cd ios/ffmpeg-$1 git checkout ${IJK_FFMPEG_COMMIT} -B ijkplayer cd - }

执行脚本 tools/pull-repo-ref.sh

function pull_fork_all() { for ARCH in $FF_ALL_ARCHS do pull_fork $ARCH done }

依次遍历所有的结构体

function sync_ff_version() { sed -i '' "s/static const char \*kIJKFFRequiredFFmpegVersion\ \=\ .*/static const char *kIJKFFRequiredFFmpegVersion = \"${IJK_FFMPEG_COMMIT}\"; /g" ios/IJKMediaPlayer/IJKMediaPlayer/IJKFFMoviePlayerController.m }

Linux sed 命令是利用脚本来处理文本文件。
-i ：直接修改读取的文件内容，而不是输出到终端。
举例 sed -i 's/原字符串/新字符串/g' /home/1.txt
该命令就是修改文件,增加版本号

#---------- case "$FF_TARGET" in ffmpeg-version) echo_ffmpeg_version ; ; armv7|armv7s|arm64|i386|x86_64) pull_common pull_fork $FF_TARGET ; ; all|*) pull_common pull_fork_all ; ; esac

这里就是命令选择了.
1.要是我们在脚本传入的参数是 ffmpeg-version 就调用echo_ffmpeg_version
2.要是我们传入的是arch ,那么我们就编译特定的结构体
3.其他的就执行pull_common 和pull_fork_all 命令

sync_ff_version

最后修改文件版本
pull-repo-base.sh

#! /usr/bin/env bashREMOTE_REPO=$1 LOCAL_WORKSPACE=$2if [ -z $REMOTE_REPO -o -z $LOCAL_WORKSPACE ]; then echo "invalid call pull-repo.sh '$REMOTE_REPO' '$LOCAL_WORKSPACE'" elif [ ! -d $LOCAL_WORKSPACE ]; then git clone $REMOTE_REPO $LOCAL_WORKSPACE else cd $LOCAL_WORKSPACE git fetch --all --tags cd - fi

-z 判断变量的值，是否为空； zero = 0
&& 并且 || 或 -a 并且 -o 或者
-d filename 如果 filename为目录，则为真

该脚本就是下载文件用的.该脚本需要两个参数
REMOTE_REPO 指向第一个参数,指向的远程的git仓库
LOCAL_WORKSPACE 指向的是下载到本地目录

1.只要参数少一个,打印使用规则

要是下载到文件路径不存在就将远程仓库下载到指定文件夹下

要是下载的路径存在,说明已经下载过了,那么就更新仓库所有的tag
该文件就是主要用来下载 git源码文件的

pull-repo-ref.sh

REMOTE_REPO=$1 LOCAL_WORKSPACE=$2 REF_REPO=$3if [ -z $1 -o -z $2 -o -z $3 ]; then echo "invalid call pull-repo.sh '$1' '$2' '$3'" elif [ ! -d $LOCAL_WORKSPACE ]; then git clone --reference $REF_REPO $REMOTE_REPO $LOCAL_WORKSPACE cd $LOCAL_WORKSPACE git repack -a else cd $LOCAL_WORKSPACE git fetch --all --tags cd - fi

1判断是否输入三个参数.没有打印该文件使用
2 判断第二个参数指定的文件夹是否存在.不存在.进行相关git操作.
3.存在进行相关git操作

这里我们知道外界传入的参数是
2 = ios/ffmpeg-armv7 或者 ios/ffmpeg-arm64 等
$3 = extra/ffmpeg
通过脚本分析,我们知道.init-ios.sh 文件就是做了下准备工作下载相关git源码和在指定文件目录下创建相关git仓库
compile-ffmpeg.sh
真正编译是在该脚本中

#! /usr/bin/env bash # # Copyright (C) 2013-2014 Bilibili # Copyright (C) 2013-2014 Zhang Rui # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # #http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. ##---------- # modify for your build toolFF_ALL_ARCHS_IOS6_SDK="armv7 armv7s i386" FF_ALL_ARCHS_IOS7_SDK="armv7 armv7s arm64 i386 x86_64" FF_ALL_ARCHS_IOS8_SDK="arm64 i386 x86_64"FF_ALL_ARCHS=$FF_ALL_ARCHS_IOS8_SDK#---------- UNI_BUILD_ROOT=`pwd` UNI_TMP="$UNI_BUILD_ROOT/tmp" UNI_TMP_LLVM_VER_FILE="$UNI_TMP/llvm.ver.txt" FF_TARGET=$1 FF_TARGET_EXTRA=$2 set -e#---------- echo_archs() { echo "====================" echo "[*] check xcode version" echo "====================" echo "FF_ALL_ARCHS = $FF_ALL_ARCHS" }FF_LIBS="libavcodec libavfilter libavformat libavutil libswscale libswresample" do_lipo_ffmpeg () { LIB_FILE=$1 LIPO_FLAGS= for ARCH in $FF_ALL_ARCHS do ARCH_LIB_FILE="$UNI_BUILD_ROOT/build/ffmpeg-$ARCH/output/lib/$LIB_FILE" if [ -f "$ARCH_LIB_FILE" ]; then LIPO_FLAGS="$LIPO_FLAGS $ARCH_LIB_FILE" else echo "skip $LIB_FILE of $ARCH"; fi donexcrun lipo -create $LIPO_FLAGS -output $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE xcrun lipo -info $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE }SSL_LIBS="libcrypto libssl" do_lipo_ssl () { LIB_FILE=$1 LIPO_FLAGS= for ARCH in $FF_ALL_ARCHS do ARCH_LIB_FILE="$UNI_BUILD_ROOT/build/openssl-$ARCH/output/lib/$LIB_FILE" if [ -f "$ARCH_LIB_FILE" ]; then LIPO_FLAGS="$LIPO_FLAGS $ARCH_LIB_FILE" else echo "skip $LIB_FILE of $ARCH"; fi doneif [ "$LIPO_FLAGS" != "" ]; then xcrun lipo -create $LIPO_FLAGS -output $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE xcrun lipo -info $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE fi }do_lipo_all () { mkdir -p $UNI_BUILD_ROOT/build/universal/lib echo "lipo archs: $FF_ALL_ARCHS" for FF_LIB in $FF_LIBS do do_lipo_ffmpeg "$FF_LIB.a"; doneANY_ARCH= for ARCH in $FF_ALL_ARCHS do ARCH_INC_DIR="$UNI_BUILD_ROOT/build/ffmpeg-$ARCH/output/include" if [ -d "$ARCH_INC_DIR" ]; then if [ -z "$ANY_ARCH" ]; then ANY_ARCH=$ARCH cp -R "$ARCH_INC_DIR" "$UNI_BUILD_ROOT/build/universal/" fiUNI_INC_DIR="$UNI_BUILD_ROOT/build/universal/include"mkdir -p "$UNI_INC_DIR/libavutil/$ARCH" cp -f "$ARCH_INC_DIR/libavutil/avconfig.h""$UNI_INC_DIR/libavutil/$ARCH/avconfig.h" cp -f tools/avconfig.h"$UNI_INC_DIR/libavutil/avconfig.h" cp -f "$ARCH_INC_DIR/libavutil/ffversion.h" "$UNI_INC_DIR/libavutil/$ARCH/ffversion.h" cp -f tools/ffversion.h"$UNI_INC_DIR/libavutil/ffversion.h" mkdir -p "$UNI_INC_DIR/libffmpeg/$ARCH" cp -f "$ARCH_INC_DIR/libffmpeg/config.h""$UNI_INC_DIR/libffmpeg/$ARCH/config.h" cp -f tools/config.h"$UNI_INC_DIR/libffmpeg/config.h" fi donefor SSL_LIB in $SSL_LIBS do do_lipo_ssl "$SSL_LIB.a"; done }#---------- if [ "$FF_TARGET" = "armv7" -o "$FF_TARGET" = "armv7s" -o "$FF_TARGET" = "arm64" ]; then echo_archs sh tools/do-compile-ffmpeg.sh $FF_TARGET $FF_TARGET_EXTRA do_lipo_all elif [ "$FF_TARGET" = "i386" -o "$FF_TARGET" = "x86_64" ]; then echo_archs sh tools/do-compile-ffmpeg.sh $FF_TARGET $FF_TARGET_EXTRA do_lipo_all elif [ "$FF_TARGET" = "lipo" ]; then echo_archs do_lipo_all elif [ "$FF_TARGET" = "all" ]; then echo_archs for ARCH in $FF_ALL_ARCHS do sh tools/do-compile-ffmpeg.sh $ARCH $FF_TARGET_EXTRA donedo_lipo_all elif [ "$FF_TARGET" = "check" ]; then echo_archs elif [ "$FF_TARGET" = "clean" ]; then echo_archs echo "==================" for ARCH in $FF_ALL_ARCHS do echo "clean ffmpeg-$ARCH" echo "==================" cd ffmpeg-$ARCH && git clean -xdf && cd - done echo "clean build cache" echo "=================" rm -rf build/ffmpeg-* rm -rf build/openssl-* rm -rf build/universal/include rm -rf build/universal/lib echo "clean success" else echo "Usage:" echo "compile-ffmpeg.sh armv7|arm64|i386|x86_64" echo "compile-ffmpeg.sh armv7s (obselete)" echo "compile-ffmpeg.sh lipo" echo "compile-ffmpeg.sh all" echo "compile-ffmpeg.sh clean" echo "compile-ffmpeg.sh check" exit 1 fi

下面我们就开始分析上面的脚本

FF_ALL_ARCHS_IOS6_SDK="armv7 armv7s i386" FF_ALL_ARCHS_IOS7_SDK="armv7 armv7s arm64 i386 x86_64" FF_ALL_ARCHS_IOS8_SDK="arm64 i386 x86_64"FF_ALL_ARCHS=$FF_ALL_ARCHS_IOS8_SDK

设置所需要编译的结构体

UNI_BUILD_ROOT=`pwd` UNI_TMP="$UNI_BUILD_ROOT/tmp" UNI_TMP_LLVM_VER_FILE="$UNI_TMP/llvm.ver.txt" FF_TARGET=$1 FF_TARGET_EXTRA=$2 set -e

设置文件路径变量和外界传入的参数变量

echo_archs() { echo "====================" echo "[*] check xcode version" echo "====================" echo "FF_ALL_ARCHS = $FF_ALL_ARCHS" }

该函数的作用就是打印所有的需要编译的结构体

FF_LIBS="libavcodec libavfilter libavformat libavutil libswscale libswresample"

需要编译库的名字

do_lipo_ffmpeg () { LIB_FILE=$1 LIPO_FLAGS= for ARCH in $FF_ALL_ARCHS do ARCH_LIB_FILE="$UNI_BUILD_ROOT/build/ffmpeg-$ARCH/output/lib/$LIB_FILE" if [ -f "$ARCH_LIB_FILE" ]; then LIPO_FLAGS="$LIPO_FLAGS $ARCH_LIB_FILE" else echo "skip $LIB_FILE of $ARCH"; fi donexcrun lipo -create $LIPO_FLAGS -output $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE xcrun lipo -info $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE }

看着命名就是合并编译完成的结构体

LIB_FILE 代表的是传入的需要lipo的库名字
LIPO_FLAGS 记录查询到的需要lipo合并的库的路径

SSL_LIBS="libcrypto libssl" do_lipo_ssl () { LIB_FILE=$1 LIPO_FLAGS= for ARCH in $FF_ALL_ARCHS do ARCH_LIB_FILE="$UNI_BUILD_ROOT/build/openssl-$ARCH/output/lib/$LIB_FILE" if [ -f "$ARCH_LIB_FILE" ]; then LIPO_FLAGS="$LIPO_FLAGS $ARCH_LIB_FILE" else echo "skip $LIB_FILE of $ARCH"; fi doneif [ "$LIPO_FLAGS" != "" ]; then xcrun lipo -create $LIPO_FLAGS -output $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE xcrun lipo -info $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE fi }

同理执行lipo命令对ssl库

do_lipo_all () { mkdir -p $UNI_BUILD_ROOT/build/universal/lib echo "lipo archs: $FF_ALL_ARCHS" for FF_LIB in $FF_LIBS do do_lipo_ffmpeg "$FF_LIB.a"; done ANY_ARCH= for ARCH in $FF_ALL_ARCHS do ARCH_INC_DIR="$UNI_BUILD_ROOT/build/ffmpeg-$ARCH/output/include" if [ -d "$ARCH_INC_DIR" ]; then if [ -z "$ANY_ARCH" ]; then ANY_ARCH=$ARCH cp -R "$ARCH_INC_DIR" "$UNI_BUILD_ROOT/build/universal/" fiUNI_INC_DIR="$UNI_BUILD_ROOT/build/universal/include"mkdir -p "$UNI_INC_DIR/libavutil/$ARCH" cp -f "$ARCH_INC_DIR/libavutil/avconfig.h""$UNI_INC_DIR/libavutil/$ARCH/avconfig.h" cp -f tools/avconfig.h"$UNI_INC_DIR/libavutil/avconfig.h" cp -f "$ARCH_INC_DIR/libavutil/ffversion.h" "$UNI_INC_DIR/libavutil/$ARCH/ffversion.h" cp -f tools/ffversion.h"$UNI_INC_DIR/libavutil/ffversion.h" mkdir -p "$UNI_INC_DIR/libffmpeg/$ARCH" cp -f "$ARCH_INC_DIR/libffmpeg/config.h""$UNI_INC_DIR/libffmpeg/$ARCH/config.h" cp -f tools/config.h"$UNI_INC_DIR/libffmpeg/config.h" fi donefor SSL_LIB in $SSL_LIBS do do_lipo_ssl "$SSL_LIB.a"; done

该函数的作用lipo 所有ffmeng编译好的库,可能是原来的写法很难看,因此这里改进了下.
我感觉还是

xcrun lipo -create find \$UNI_BUILD_ROOT/build -name $LIB_FILE -output $UNI_BUILD_ROOT/build/universal/lib/$LIB_FILE || exit 1

接着就是头文件处理

if [ "$FF_TARGET" = "armv7" -o "$FF_TARGET" = "armv7s" -o "$FF_TARGET" = "arm64" ]; then echo_archs sh tools/do-compile-ffmpeg.sh $FF_TARGET $FF_TARGET_EXTRA do_lipo_all elif [ "$FF_TARGET" = "i386" -o "$FF_TARGET" = "x86_64" ]; then echo_archs sh tools/do-compile-ffmpeg.sh $FF_TARGET $FF_TARGET_EXTRA do_lipo_all elif [ "$FF_TARGET" = "lipo" ]; then echo_archs do_lipo_all elif [ "$FF_TARGET" = "all" ]; then echo_archs for ARCH in $FF_ALL_ARCHS do sh tools/do-compile-ffmpeg.sh $ARCH $FF_TARGET_EXTRA donedo_lipo_all elif [ "$FF_TARGET" = "check" ]; then echo_archs elif [ "$FF_TARGET" = "clean" ]; then echo_archs echo "==================" for ARCH in $FF_ALL_ARCHS do echo "clean ffmpeg-$ARCH" echo "==================" cd ffmpeg-$ARCH && git clean -xdf && cd - done echo "clean build cache" echo "=================" rm -rf build/ffmpeg-* rm -rf build/openssl-* rm -rf build/universal/include rm -rf build/universal/lib echo "clean success" else echo "Usage:" echo "compile-ffmpeg.sh armv7|arm64|i386|x86_64" echo "compile-ffmpeg.sh armv7s (obselete)" echo "compile-ffmpeg.sh lipo" echo "compile-ffmpeg.sh all" echo "compile-ffmpeg.sh clean" echo "compile-ffmpeg.sh check" exit 1 fi

下面就是命令选择了
armv7 arvm7s arm64 i386 x86_64 这些命令需要运行脚本do-compile-ffmpeg.sh
lipo 命令
all 命令是编译所有的结构体
check命令
clean命令
compile-ffmpeg.sh
这个脚本是真正编译的脚本了

#! /usr/bin/env bash # # Copyright (C) 2013-2014 Bilibili # Copyright (C) 2013-2014 Zhang Rui # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # #http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. ## This script is based on projects below # https://github.com/kolyvan/kxmovie # https://github.com/yixia/FFmpeg-Android # http://git.videolan.org/?p=vlc-ports/android.git; a=summary # https://github.com/kewlbear/FFmpeg-iOS-build-script/#-------------------- echo "====================" echo "[*] check host" echo "====================" set -e#-------------------- # include#-------------------- # common defines FF_ARCH=$1 FF_BUILD_OPT=$2 echo "FF_ARCH=$FF_ARCH" echo "FF_BUILD_OPT=$FF_BUILD_OPT" if [ -z "$FF_ARCH" ]; then echo "You must specific an architecture 'armv7, armv7s, arm64, i386, x86_64, ...'.\n" exit 1 fiFF_BUILD_ROOT=`pwd` FF_TAGET_OS="darwin"# ffmpeg build params export COMMON_FF_CFG_FLAGS= source $FF_BUILD_ROOT/../config/module.shFFMPEG_CFG_FLAGS= FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $COMMON_FF_CFG_FLAGS"# Optimization options (experts only): # FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-armv5te" # FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-armv6" # FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-armv6t2"# Advanced options (experts only): FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-cross-compile" # --disable-symver may indicate a bug # FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-symver"# Developer options (useful when working on FFmpeg itself): FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-stripping"## FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --arch=$FF_ARCH" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --target-os=$FF_TAGET_OS" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-static" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-shared" FFMPEG_EXTRA_CFLAGS=# i386, x86_64 FFMPEG_CFG_FLAGS_SIMULATOR= FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --disable-asm" FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --disable-mmx" FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --assert-level=2"# armv7, armv7s, arm64 FFMPEG_CFG_FLAGS_ARM= FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-pic" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-neon" case "$FF_BUILD_OPT" in debug) FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --disable-optimizations" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-debug" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --disable-small" ; ; *) FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-optimizations" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-debug" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-small" ; ; esacecho "build_root: $FF_BUILD_ROOT"#-------------------- echo "====================" echo "[*] check gas-preprocessor" echo "====================" FF_TOOLS_ROOT="$FF_BUILD_ROOT/../extra" export PATH="$FF_TOOLS_ROOT/gas-preprocessor:$PATH"echo "gasp: $FF_TOOLS_ROOT/gas-preprocessor/gas-preprocessor.pl"#-------------------- echo "====================" echo "[*] config arch $FF_ARCH" echo "===================="FF_BUILD_NAME="unknown" FF_XCRUN_PLATFORM="iPhoneOS" FF_XCRUN_OSVERSION= FF_GASPP_EXPORT= FF_DEP_OPENSSL_INC= FF_DEP_OPENSSL_LIB= FF_XCODE_BITCODE=if [ "$FF_ARCH" = "i386" ]; then FF_BUILD_NAME="ffmpeg-i386" FF_BUILD_NAME_OPENSSL=openssl-i386 FF_XCRUN_PLATFORM="iPhoneSimulator" FF_XCRUN_OSVERSION="-mios-simulator-version-min=6.0" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR" elif [ "$FF_ARCH" = "x86_64" ]; then FF_BUILD_NAME="ffmpeg-x86_64" FF_BUILD_NAME_OPENSSL=openssl-x86_64 FF_XCRUN_PLATFORM="iPhoneSimulator" FF_XCRUN_OSVERSION="-mios-simulator-version-min=7.0" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR" elif [ "$FF_ARCH" = "armv7" ]; then FF_BUILD_NAME="ffmpeg-armv7" FF_BUILD_NAME_OPENSSL=openssl-armv7 FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0" FF_XCODE_BITCODE="-fembed-bitcode" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM" #FFMPEG_CFG_CPU="--cpu=cortex-a8" elif [ "$FF_ARCH" = "armv7s" ]; then FF_BUILD_NAME="ffmpeg-armv7s" FF_BUILD_NAME_OPENSSL=openssl-armv7s FFMPEG_CFG_CPU="--cpu=swift" FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0" FF_XCODE_BITCODE="-fembed-bitcode" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM" elif [ "$FF_ARCH" = "arm64" ]; then FF_BUILD_NAME="ffmpeg-arm64" FF_BUILD_NAME_OPENSSL=openssl-arm64 FF_XCRUN_OSVERSION="-miphoneos-version-min=7.0" FF_XCODE_BITCODE="-fembed-bitcode" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM" FF_GASPP_EXPORT="GASPP_FIX_XCODE5=1" else echo "unknown architecture $FF_ARCH"; exit 1 fiecho "build_name: $FF_BUILD_NAME" echo "platform:$FF_XCRUN_PLATFORM" echo "osversion:$FF_XCRUN_OSVERSION"#-------------------- echo "====================" echo "[*] make ios toolchain $FF_BUILD_NAME" echo "===================="FF_BUILD_SOURCE="$FF_BUILD_ROOT/$FF_BUILD_NAME" FF_BUILD_PREFIX="$FF_BUILD_ROOT/build/$FF_BUILD_NAME/output"FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --prefix=$FF_BUILD_PREFIX"mkdir -p $FF_BUILD_PREFIXecho "build_source: $FF_BUILD_SOURCE" echo "build_prefix: $FF_BUILD_PREFIX"#-------------------- echo "\n--------------------" echo "[*] configurate ffmpeg" echo "--------------------" FF_XCRUN_SDK=`echo $FF_XCRUN_PLATFORM | tr '[:upper:]' '[:lower:]'` FF_XCRUN_CC="xcrun -sdk $FF_XCRUN_SDK clang"FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_CPU"FFMPEG_CFLAGS= FFMPEG_CFLAGS="$FFMPEG_CFLAGS -arch $FF_ARCH" FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FF_XCRUN_OSVERSION" FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FFMPEG_EXTRA_CFLAGS" FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FF_XCODE_BITCODE" FFMPEG_LDFLAGS="$FFMPEG_CFLAGS" FFMPEG_DEP_LIBS=#-------------------- echo "\n--------------------" echo "[*] check OpenSSL" echo "----------------------" FFMPEG_DEP_OPENSSL_INC=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/include FFMPEG_DEP_OPENSSL_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/lib #-------------------- # with openssl if [ -f "${FFMPEG_DEP_OPENSSL_LIB}/libssl.a" ]; then FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-openssl"FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I${FFMPEG_DEP_OPENSSL_INC}" FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L${FFMPEG_DEP_OPENSSL_LIB} -lssl -lcrypto" fi#-------------------- echo "\n--------------------" echo "[*] configure" echo "----------------------"if [ ! -d $FF_BUILD_SOURCE ]; then echo "" echo "!! ERROR" echo "!! Can not find FFmpeg directory for $FF_BUILD_NAME" echo "!! Run 'sh init-ios.sh' first" echo "" exit 1 fi# xcode configuration export DEBUG_INFORMATION_FORMAT=dwarf-with-dsymcd $FF_BUILD_SOURCE if [ -f "./config.h" ]; then echo 'reuse configure' else echo "config: $FFMPEG_CFG_FLAGS $FF_XCRUN_CC" ./configure \ $FFMPEG_CFG_FLAGS \ --cc="$FF_XCRUN_CC" \ $FFMPEG_CFG_CPU \ --extra-cflags="$FFMPEG_CFLAGS" \ --extra-cxxflags="$FFMPEG_CFLAGS" \ --extra-ldflags="$FFMPEG_LDFLAGS $FFMPEG_DEP_LIBS" make clean fi#-------------------- echo "\n--------------------" echo "[*] compile ffmpeg" echo "--------------------" cp config.* $FF_BUILD_PREFIX make -j3 $FF_GASPP_EXPORT make install mkdir -p $FF_BUILD_PREFIX/include/libffmpeg cp -f config.h $FF_BUILD_PREFIX/include/libffmpeg/config.h

分段分析

echo "[*] check host" echo "====================" set -e

打印信息和设置脚本属性,只要发生错误就退出

FF_ARCH=$1 FF_BUILD_OPT=$2 echo "FF_ARCH=$FF_ARCH" echo "FF_BUILD_OPT=$FF_BUILD_OPT"

获取外界传入的参数并打印

这里我们需要知道FF_BUILD_OPT是可选参数($2是可选参数)

if [ -z "$FF_ARCH" ]; then echo "You must specific an architecture 'armv7, armv7s, arm64, i386, x86_64, ...'.\n" exit 1 fi

要是$1 没有,那么脚本使用错误,那么打印使用脚本信息退出

FF_BUILD_ROOT=`pwd` FF_TAGET_OS="darwin"

记录当前目录和编译的target变量

export COMMON_FF_CFG_FLAGS= source $FF_BUILD_ROOT/../config/module.shFFMPEG_CFG_FLAGS= FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $COMMON_FF_CFG_FLAGS" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-cross-compile" # --disable-symver may indicate a bug # FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-symver"# Developer options (useful when working on FFmpeg itself): FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-stripping"## FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --arch=$FF_ARCH" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --target-os=$FF_TAGET_OS" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-static" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --disable-shared"

这里就是设置变量

export 是声明一个全局变量,其他脚本也可以访问到该变量
source $FF_BUILD_ROOT/../config/module.sh 就是设置COMMON_FF_CFG_FLAGS变量的值. (当前路径是在/ijkplayer-ios/ios. 因此FF_BUILD_ROOT/../config/module.sh中的module.sh 是在路径/ijkplayer-ios/config/module.sh)

FFMPEG_EXTRA_CFLAGS=

该参数没设置值,在该脚本没有用,这个是预留参数,供我们自己选择添加的参数

FFMPEG_CFG_FLAGS_SIMULATOR= FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --disable-asm" FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --disable-mmx" FFMPEG_CFG_FLAGS_SIMULATOR="$FFMPEG_CFG_FLAGS_SIMULATOR --assert-level=2"# armv7, armv7s, arm64 FFMPEG_CFG_FLAGS_ARM= FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-pic" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-neon"

设置模拟器和真机的参数

case "$FF_BUILD_OPT" in debug) FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --disable-optimizations" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-debug" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --disable-small" ; ; *) FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-optimizations" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-debug" FFMPEG_CFG_FLAGS_ARM="$FFMPEG_CFG_FLAGS_ARM --enable-small" ; ; esac

FF_BUILD_OPT 是我们传入脚本的第二个参数,只有一个值可选debug

echo "build_root: $FF_BUILD_ROOT"#-------------------- echo "====================" echo "[*] check gas-preprocessor" echo "===================="

打印相关参数

FF_TOOLS_ROOT="$FF_BUILD_ROOT/../extra"

该参数指向的目录是 //ijkplayer-ios/extra

export PATH="$FF_TOOLS_ROOT/gas-preprocessor:$PATH" echo "gasp: $FF_TOOLS_ROOT/gas-preprocessor/gas-preprocessor.pl"

给PATH添加路径gas-preprocessor路径,并打印

#-------------------- echo "====================" echo "[*] config arch $FF_ARCH" echo "===================="

打印信息

FF_BUILD_NAME="unknown" FF_XCRUN_PLATFORM="iPhoneOS" FF_XCRUN_OSVERSION= FF_GASPP_EXPORT= FF_DEP_OPENSSL_INC= FF_DEP_OPENSSL_LIB= FF_XCODE_BITCODE=

声明相关变量

if [ "$FF_ARCH" = "i386" ]; then FF_BUILD_NAME="ffmpeg-i386" FF_BUILD_NAME_OPENSSL=openssl-i386 FF_XCRUN_PLATFORM="iPhoneSimulator" FF_XCRUN_OSVERSION="-mios-simulator-version-min=6.0" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR" elif [ "$FF_ARCH" = "x86_64" ]; then FF_BUILD_NAME="ffmpeg-x86_64" FF_BUILD_NAME_OPENSSL=openssl-x86_64 FF_XCRUN_PLATFORM="iPhoneSimulator" FF_XCRUN_OSVERSION="-mios-simulator-version-min=7.0" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_SIMULATOR" elif [ "$FF_ARCH" = "armv7" ]; then FF_BUILD_NAME="ffmpeg-armv7" FF_BUILD_NAME_OPENSSL=openssl-armv7 FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0" FF_XCODE_BITCODE="-fembed-bitcode" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM" #FFMPEG_CFG_CPU="--cpu=cortex-a8" elif [ "$FF_ARCH" = "armv7s" ]; then FF_BUILD_NAME="ffmpeg-armv7s" FF_BUILD_NAME_OPENSSL=openssl-armv7s FFMPEG_CFG_CPU="--cpu=swift" FF_XCRUN_OSVERSION="-miphoneos-version-min=6.0" FF_XCODE_BITCODE="-fembed-bitcode" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM" elif [ "$FF_ARCH" = "arm64" ]; then FF_BUILD_NAME="ffmpeg-arm64" FF_BUILD_NAME_OPENSSL=openssl-arm64 FF_XCRUN_OSVERSION="-miphoneos-version-min=7.0" FF_XCODE_BITCODE="-fembed-bitcode" FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_FLAGS_ARM" FF_GASPP_EXPORT="GASPP_FIX_XCODE5=1" else echo "unknown architecture $FF_ARCH"; exit 1 fi

根据不同的结构体编译给相关变量赋值

echo "build_name: $FF_BUILD_NAME" echo "platform:$FF_XCRUN_PLATFORM" echo "osversion:$FF_XCRUN_OSVERSION"#-------------------- echo "====================" echo "[*] make ios toolchain $FF_BUILD_NAME" echo "===================="

打印相关信息

FF_BUILD_SOURCE="$FF_BUILD_ROOT/$FF_BUILD_NAME" FF_BUILD_PREFIX="$FF_BUILD_ROOT/build/$FF_BUILD_NAME/output"FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --prefix=$FF_BUILD_PREFIX"

声明变量

FF_BUILD_SOURCE =/ijkplayer-ios/ios/ ffmpeg-i386 (编译源码地址)
FF_BUILD_PREFIX = /ijkplayer-ios/ios/build/ ffmpeg-i386/output (编译结果输出地址)

mkdir -p $FF_BUILD_PREFIXecho "build_source: $FF_BUILD_SOURCE" echo "build_prefix: $FF_BUILD_PREFIX"

创建输出文件路径文件夹并打印信息

#-------------------- echo "\n--------------------" echo "[*] configurate ffmpeg" echo "--------------------" FF_XCRUN_SDK=`echo $FF_XCRUN_PLATFORM | tr '[:upper:]' '[:lower:]'` FF_XCRUN_CC="xcrun -sdk $FF_XCRUN_SDK clang"

赋值相关变量

FF_XCRUN_SDK = iPhonesimulator
FF_XCRUN_CC = xcrun -sdk iPhonesimulator clang

FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS $FFMPEG_CFG_CPU"

添加cpu相关编译参数

FFMPEG_CFLAGS= FFMPEG_CFLAGS="$FFMPEG_CFLAGS -arch $FF_ARCH" FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FF_XCRUN_OSVERSION" FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FFMPEG_EXTRA_CFLAGS" FFMPEG_CFLAGS="$FFMPEG_CFLAGS $FF_XCODE_BITCODE" FFMPEG_LDFLAGS="$FFMPEG_CFLAGS" FFMPEG_DEP_LIBS=

声明参数

#-------------------- echo "\n--------------------" echo "[*] check OpenSSL" echo "----------------------" FFMPEG_DEP_OPENSSL_INC=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/include FFMPEG_DEP_OPENSSL_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/lib #-------------------- # with openssl if [ -f "${FFMPEG_DEP_OPENSSL_LIB}/libssl.a" ]; then FFMPEG_CFG_FLAGS="$FFMPEG_CFG_FLAGS --enable-openssl"FFMPEG_CFLAGS="$FFMPEG_CFLAGS -I${FFMPEG_DEP_OPENSSL_INC}" FFMPEG_DEP_LIBS="$FFMPEG_CFLAGS -L${FFMPEG_DEP_OPENSSL_LIB} -lssl -lcrypto" fi

openssl相关设置.这里没有用因此相当于无效.

echo "\n--------------------" echo "[*] configure" echo "----------------------"if [ ! -d $FF_BUILD_SOURCE ]; then echo "" echo "!! ERROR" echo "!! Can not find FFmpeg directory for $FF_BUILD_NAME" echo "!! Run 'sh init-ios.sh' first" echo "" exit 1 fi

检查编译源是否存在,不存在就退出

# xcode configuration export DEBUG_INFORMATION_FORMAT=dwarf-with-dsym

Xcode 配置

cd $FF_BUILD_SOURCE if [ -f "./config.h" ]; then echo 'reuse configure' else echo "config: $FFMPEG_CFG_FLAGS $FF_XCRUN_CC" ./configure \ $FFMPEG_CFG_FLAGS \ --cc="$FF_XCRUN_CC" \ $FFMPEG_CFG_CPU \ --extra-cflags="$FFMPEG_CFLAGS" \ --extra-cxxflags="$FFMPEG_CFLAGS" \ --extra-ldflags="$FFMPEG_LDFLAGS $FFMPEG_DEP_LIBS" make clean fi

1.进入源码目录
2.是否存在config.h 文件

-f filename 如果 filename为常规文件，则为真 [ -f /usr/bin/grep ]

打印参数,并启用编译命令

这里我们需要知道c文件编译需要经过 ./configure make 和make install三部曲.不做解释

我们看看编译命令的各个参数的值

FFMPEG_CFG_FLAGS = --disable-gpl --disable-nonfree --enable-runtime-cpudetect --disable-gray --disable-swscale-alpha --disable-programs --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-avdevice --enable-avcodec --enable-avformat --enable-avutil --enable-swresample --enable-swscale --disable-postproc --enable-avfilter --disable-avresample --enable-network --disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-vdpau --disable-videotoolbox --disable-encoders --enable-encoder=png --disable-decoders --enable-decoder=aac --enable-decoder=aac_latm --enable-decoder=flv --enable-decoder=h264 --enable-decoder=mp3* --enable-decoder=vp6f --enable-decoder=flac --enable-decoder=hevc --enable-decoder=vp8 --enable-decoder=vp9 --disable-hwaccels --disable-muxers --enable-muxer=mp4 --disable-demuxers --enable-demuxer=aac --enable-demuxer=concat --enable-demuxer=data --enable-demuxer=flv --enable-demuxer=hls --enable-demuxer=live_flv --enable-demuxer=mov --enable-demuxer=mp3 --enable-demuxer=mpegps --enable-demuxer=mpegts --enable-demuxer=mpegvideo --enable-demuxer=flac --enable-demuxer=hevc --enable-demuxer=webm_dash_manifest --disable-parsers --enable-parser=aac --enable-parser=aac_latm --enable-parser=h264 --enable-parser=flac --enable-parser=hevc --enable-bsfs --disable-bsf=chomp --disable-bsf=dca_core --disable-bsf=dump_extradata --disable-bsf=hevc_mp4toannexb --disable-bsf=imx_dump_header --disable-bsf=mjpeg2jpeg --disable-bsf=mjpega_dump_header --disable-bsf=mov2textsub --disable-bsf=mp3_header_decompress --disable-bsf=mpeg4_unpack_bframes --disable-bsf=noise --disable-bsf=remove_extradata --disable-bsf=text2movsub --disable-bsf=vp9_superframe --enable-protocols --enable-protocol=async --disable-protocol=bluray --disable-protocol=concat --disable-protocol=crypto --disable-protocol=ffrtmpcrypt --enable-protocol=ffrtmphttp --disable-protocol=gopher --disable-protocol=icecast --disable-protocol=librtmp* --disable-protocol=libssh --disable-protocol=md5 --disable-protocol=mmsh --disable-protocol=mmst --disable-protocol=rtmp* --enable-protocol=rtmp --enable-protocol=rtmpt --disable-protocol=rtp --disable-protocol=sctp --disable-protocol=srtp --disable-protocol=subfile --disable-protocol=unix --disable-devices --disable-filters --disable-iconv --disable-audiotoolbox --disable-videotoolbox --disable-linux-perf --disable-bzlib --enable-cross-compile --disable-stripping --arch=arm64 --target-os=darwin --enable-static --disable-shared --enable-pic --enable-neon --enable-optimizations --enable-debug --enable-small --prefix=/Users/glodon/Desktop/vidio/ijk/ijkplayer-ios/ios/build/ffmpeg-arm64/output

FFMPEG_CFG_CPU =
FFMPEG_CFLAGS = -arch arm64 -miphoneos-version-min=7.0 -fembed-bitcode
FFMPEG_CFLAGS = -arch arm64 -miphoneos-version-min=7.0 -fembed-bitcode
FFMPEG_LDFLAGS FFMPEG_DEP_LIBS = -arch arm64 -miphoneos-version-min=7.0 -fembed-bitcode