ijkplayer编译支持x264编码器

news/2024/7/10 19:54:31 标签: ffmpeg, 音视频

ijkplayer作为一款基于ffmpeg在移动端比较流行的播放器，并没有集成编码器。如果使用ffmpeg且需要音视频编码功能的话就需要自己手动集成。
编译支持x264编码器的流程主要参考了

ijkplayer支持x264编译 - 简书
原理与ijkplayer编译支持openssl的流程类似。

1 下载x264源码

在ijkplayer源码根目录下新建init-android-x264.sh 内容如下:

IJK_x264_UPSTREAM=http://git.videolan.org/git/x264.git
IJK_x264_FORK=http://git.videolan.org/git/x264.git

IJK_x264_LOCAL_REPO=extra/x264

set -e
TOOLS=tools

echo "== pull x264 base =="
sh $TOOLS/pull-repo-base.sh $IJK_x264_UPSTREAM $IJK_x264_LOCAL_REPO

function pull_fork()
{
    echo "== pull x264 fork $1 =="
    sh $TOOLS/pull-repo-ref.sh $IJK_x264_FORK android/contrib/x264-$1 ${IJK_x264_LOCAL_REPO}
}

pull_fork "armv5"
pull_fork "armv7a"
pull_fork "arm64"
pull_fork "x86"
pull_fork "x86_64"

执行
./init-android-x264.sh
同下载ffmpeg源码一样，会在extra下生成一个x264源码文件夹，以及在android/contrib下生成5个x264各个架构的源码文件夹。

 

2 编译x264

增加编译脚本，在android/contrib下新建compile-x264.sh ，在android/contrib/tools 下新建do-compile-x264.sh

compile-x264.sh脚本内容如下：

UNI_BUILD_ROOT=`pwd`
FF_TARGET=$1
set -e
set +x

FF_ACT_ARCHS_32="armv5 armv7a x86"
FF_ACT_ARCHS_64="armv5 armv7a arm64 x86 x86_64"
FF_ACT_ARCHS_ALL=$FF_ACT_ARCHS_64

echo_archs() {
    echo "===================="
    echo "[*] check archs"
    echo "===================="
    echo "FF_ALL_ARCHS = $FF_ACT_ARCHS_ALL"
    echo "FF_ACT_ARCHS = $*"
    echo ""
}

echo_usage() {
    echo "Usage:"
    echo "  compile-x264.sh armv5|armv7a|arm64|x86|x86_64"
    echo "  compile-x264.sh all|all32"
    echo "  compile-x264.sh all64"
    echo "  compile-x264.sh clean"
    echo "  compile-x264.sh check"
    exit 1
}

echo_nextstep_help() {
    #----------
    echo ""
    echo "--------------------"
    echo "[*] Finished"
    echo "--------------------"
    echo "# to continue to build ffmpeg, run script below,"
    echo "sh compile-ffmpeg.sh "
    echo "# to continue to build ijkplayer, run script below,"
    echo "sh compile-ijk.sh "
}

#----------
case "$FF_TARGET" in
    "")
        echo_archs armv7a
        sh tools/do-compile-x264.sh armv7a
    ;;
    armv5|armv7a|arm64|x86|x86_64)
        echo_archs $FF_TARGET
        sh tools/do-compile-x264.sh $FF_TARGET
        echo_nextstep_help
    ;;
    all32)
        echo_archs $FF_ACT_ARCHS_32
        for ARCH in $FF_ACT_ARCHS_32
        do
            sh tools/do-compile-x264.sh $ARCH
        done
        echo_nextstep_help
    ;;
    all|all64)
        echo_archs $FF_ACT_ARCHS_64
        for ARCH in $FF_ACT_ARCHS_64
        do
            sh tools/do-compile-x264.sh $ARCH
        done
        echo_nextstep_help
    ;;
    clean)
        echo_archs FF_ACT_ARCHS_64
        for ARCH in $FF_ACT_ARCHS_ALL
        do
            if [ -d x264-$ARCH ]; then
                cd x264-$ARCH && git clean -xdf && cd -
            fi
        done
        rm -rf ./build/x264-*
    ;;
    check)
        echo_archs FF_ACT_ARCHS_ALL
    ;;
    *)
        echo_usage
        exit 1
    ;;
esac

do-compile-x264.sh脚本内容如下：

set -e

if [ -z "$ANDROID_NDK" ]; then
    echo "You must define ANDROID_NDK before starting."
    echo "They must point to your NDK directories.\n"
    exit 1
fi

#--------------------
# common defines
FF_ARCH=$1
if [ -z "$FF_ARCH" ]; then
    echo "You must specific an architecture 'arm, armv7a, x86, ...'.\n"
    exit 1
fi


FF_BUILD_ROOT=`pwd`
FF_ANDROID_PLATFORM=android-9


FF_BUILD_NAME=
FF_SOURCE=
FF_CROSS_PREFIX=

FF_CFG_FLAGS=
FF_PLATFORM_CFG_FLAGS=

FF_EXTRA_CFLAGS=
FF_EXTRA_LDFLAGS=



#--------------------
echo ""
echo "--------------------"
echo "[*] make NDK standalone toolchain"
echo "--------------------"
. ./tools/do-detect-env.sh
FF_MAKE_TOOLCHAIN_FLAGS=$IJK_MAKE_TOOLCHAIN_FLAGS
FF_MAKE_FLAGS=$IJK_MAKE_FLAG
FF_GCC_VER=$IJK_GCC_VER
FF_GCC_64_VER=$IJK_GCC_64_VER


#----- armv7a begin -----
if [ "$FF_ARCH" = "armv7a" ]; then
        echo "gdebug x264-armv7a.............."
    FF_BUILD_NAME=x264-armv7a
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME
    
    FF_CROSS_PREFIX=arm-linux-androideabi
        FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_VER}

    FF_PLATFORM_CFG_FLAGS="android-armv7"

elif [ "$FF_ARCH" = "armv5" ]; then
    FF_BUILD_NAME=x264-armv5
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME
    
    FF_CROSS_PREFIX=arm-linux-androideabi
        FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_VER}

    FF_PLATFORM_CFG_FLAGS="android"

elif [ "$FF_ARCH" = "x86" ]; then
    FF_BUILD_NAME=x264-x86
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME
    
    FF_CROSS_PREFIX=i686-linux-android
        FF_TOOLCHAIN_NAME=x86-${FF_GCC_VER}

    FF_PLATFORM_CFG_FLAGS="android-x86"

elif [ "$FF_ARCH" = "x86_64" ]; then
    FF_ANDROID_PLATFORM=android-21

    FF_BUILD_NAME=x264-x86_64
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME

    FF_CROSS_PREFIX=x86_64-linux-android
    FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_64_VER}

    FF_PLATFORM_CFG_FLAGS="linux-x86_64"

elif [ "$FF_ARCH" = "arm64" ]; then
    FF_ANDROID_PLATFORM=android-21

    FF_BUILD_NAME=x264-arm64
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME

    FF_CROSS_PREFIX=aarch64-linux-android
    FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_64_VER}

    FF_PLATFORM_CFG_FLAGS="linux-aarch64"

else
    echo "unknown architecture $FF_ARCH";
    exit 1
fi

FF_TOOLCHAIN_PATH=$FF_BUILD_ROOT/build/$FF_BUILD_NAME/toolchain

FF_SYSROOT=$FF_TOOLCHAIN_PATH/sysroot
FF_PREFIX=$FF_BUILD_ROOT/build/$FF_BUILD_NAME/output

mkdir -p $FF_PREFIX
mkdir -p $FF_SYSROOT


#--------------------
echo ""
echo "--------------------"
echo "[*] make NDK standalone toolchain"
echo "--------------------"
. ./tools/do-detect-env.sh
FF_MAKE_TOOLCHAIN_FLAGS=$IJK_MAKE_TOOLCHAIN_FLAGS
FF_MAKE_FLAGS=$IJK_MAKE_FLAG


FF_MAKE_TOOLCHAIN_FLAGS="$FF_MAKE_TOOLCHAIN_FLAGS --install-dir=$FF_TOOLCHAIN_PATH"
FF_TOOLCHAIN_TOUCH="$FF_TOOLCHAIN_PATH/touch"
if [ ! -f "$FF_TOOLCHAIN_TOUCH" ]; then
    $ANDROID_NDK/build/tools/make-standalone-toolchain.sh \
        $FF_MAKE_TOOLCHAIN_FLAGS \
        --platform=$FF_ANDROID_PLATFORM \
        --toolchain=$FF_TOOLCHAIN_NAME
    touch $FF_TOOLCHAIN_TOUCH;
fi


#--------------------
echo ""
echo "--------------------"
echo "[*] check x264 env"
echo "--------------------"
export PATH=$FF_TOOLCHAIN_PATH/bin:$PATH

export COMMON_FF_CFG_FLAGS=

FF_CFG_FLAGS="$FF_CFG_FLAGS $COMMON_FF_CFG_FLAGS"

#--------------------
# Standard options:
echo "FF_PREFIX = $FF_PREFIX"
FF_CFG_FLAGS="$FF_CFG_FLAGS --prefix=$FF_PREFIX"
FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-static --disable-shared"
FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-pic --enable-strip --disable-asm --disable-cli"
#FF_CFG_FLAGS="$FF_CFG_FLAGS --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi-"
FF_CFG_FLAGS="$FF_CFG_FLAGS --cross-prefix=${FF_CROSS_PREFIX}-"
FF_CFG_FLAGS="$FF_CFG_FLAGS --host=arm-linux"
FF_CFG_FLAGS="$FF_CFG_FLAGS --sysroot=$FF_SYSROOT"

#FF_CFG_FLAGS="$FF_CFG_FLAGS --cross-prefix=${FF_CROSS_PREFIX}-"
#FF_CFG_FLAGS="$FF_CFG_FLAGS $FF_PLATFORM_CFG_FLAGS"

#--------------------
echo ""
echo "--------------------"
echo "[*] configurate x264"
echo "--------------------"
cd $FF_SOURCE && chmod +w configure
#if [ -f "./Makefile" ]; then
#    echo 'reuse configure'
#else
    echo "./configure $FF_CFG_FLAGS"
    ./configure $FF_CFG_FLAGS
#        --extra-cflags="$FF_CFLAGS $FF_EXTRA_CFLAGS" \
#        --extra-ldflags="$FF_EXTRA_LDFLAGS"
#fi

#--------------------
echo ""
echo "--------------------"
echo "[*] compile x264"
echo "--------------------"
make depend
echo "make $FF_MAKE_FLAGS"
make $FF_MAKE_FLAGS
make install

#--------------------
echo ""
echo "--------------------"
echo "[*] link x264"
echo "--------------------"

同编译openssl的流程类似。
在mac终端定位到android/contrib目录。
执行
./compile-x264.sh clean
再执行
./compile-x264.sh armv7a
这里只编译支持armv7a架构，若要支持所有架构，将armv7a改为all。

执行成功后在android/contrib/build目录下会生成一个x264-armv7a的目录。

3. 与ijkplayer使用的ffmpeg交叉编译脚本修改

修改androdi/contrib/tools目录下的do-compile-ffmpeg.sh脚本文件，内容如下：

#! /usr/bin/env bash
#
# Copyright (C) 2013-2014 Zhang Rui <bbcallen@gmail.com>
#
# 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/yixia/FFmpeg-Android
# http://git.videolan.org/?p=vlc-ports/android.git;a=summary

#--------------------
echo "===================="
echo "[*] check env $1"
echo "===================="
set -e


#--------------------
# 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 'arm, armv7a, x86, ...'."
    echo ""
    exit 1
fi


FF_BUILD_ROOT=`pwd`
FF_ANDROID_PLATFORM=android-9


FF_BUILD_NAME=
FF_SOURCE=
FF_CROSS_PREFIX=
FF_DEP_OPENSSL_INC=
FF_DEP_OPENSSL_LIB=
FF_DEP_X264_INC=
FF_DEP_X264_LIB=
FF_DEP_LIBSOXR_INC=
FF_DEP_LIBSOXR_LIB=

FF_CFG_FLAGS=

FF_EXTRA_CFLAGS=
FF_EXTRA_LDFLAGS=
FF_DEP_LIBS=

FF_MODULE_DIRS="compat libavcodec libavfilter libavformat libavutil libswresample libswscale"
FF_ASSEMBLER_SUB_DIRS=


#--------------------
echo ""
echo "--------------------"
echo "[*] make NDK standalone toolchain"
echo "--------------------"
. ./tools/do-detect-env.sh
FF_MAKE_TOOLCHAIN_FLAGS=$IJK_MAKE_TOOLCHAIN_FLAGS
FF_MAKE_FLAGS=$IJK_MAKE_FLAG
FF_GCC_VER=$IJK_GCC_VER
FF_GCC_64_VER=$IJK_GCC_64_VER


#----- armv7a begin -----
if [ "$FF_ARCH" = "armv7a" ]; then
    FF_BUILD_NAME=ffmpeg-armv7a
    FF_BUILD_NAME_OPENSSL=openssl-armv7a
    FF_BUILD_NAME_X264=x264-armv7a
    FF_BUILD_NAME_LIBSOXR=libsoxr-armv7a
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME

    FF_CROSS_PREFIX=arm-linux-androideabi
    FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_VER}

    FF_CFG_FLAGS="$FF_CFG_FLAGS --arch=arm --cpu=cortex-a8"
    FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-neon"
    FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-thumb"

    FF_EXTRA_CFLAGS="$FF_EXTRA_CFLAGS -march=armv7-a -mcpu=cortex-a8 -mfpu=vfpv3-d16 -mfloat-abi=softfp -mthumb"
    FF_EXTRA_LDFLAGS="$FF_EXTRA_LDFLAGS -Wl,--fix-cortex-a8"

    FF_ASSEMBLER_SUB_DIRS="arm"

elif [ "$FF_ARCH" = "armv5" ]; then
    FF_BUILD_NAME=ffmpeg-armv5
    FF_BUILD_NAME_OPENSSL=openssl-armv5
    FF_BUILD_NAME_X264=x264-armv5
    FF_BUILD_NAME_LIBSOXR=libsoxr-armv5
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME

    FF_CROSS_PREFIX=arm-linux-androideabi
    FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_VER}

    FF_CFG_FLAGS="$FF_CFG_FLAGS --arch=arm"

    FF_EXTRA_CFLAGS="$FF_EXTRA_CFLAGS -march=armv5te -mtune=arm9tdmi -msoft-float"
    FF_EXTRA_LDFLAGS="$FF_EXTRA_LDFLAGS"

    FF_ASSEMBLER_SUB_DIRS="arm"

elif [ "$FF_ARCH" = "x86" ]; then
    FF_BUILD_NAME=ffmpeg-x86
    FF_BUILD_NAME_OPENSSL=openssl-x86
    FF_BUILD_NAME_X264=x264-x86
    FF_BUILD_NAME_LIBSOXR=libsoxr-x86
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME

    FF_CROSS_PREFIX=i686-linux-android
    FF_TOOLCHAIN_NAME=x86-${FF_GCC_VER}

    FF_CFG_FLAGS="$FF_CFG_FLAGS --arch=x86 --cpu=i686 --enable-yasm"

    FF_EXTRA_CFLAGS="$FF_EXTRA_CFLAGS -march=atom -msse3 -ffast-math -mfpmath=sse"
    FF_EXTRA_LDFLAGS="$FF_EXTRA_LDFLAGS"

    FF_ASSEMBLER_SUB_DIRS="x86"

elif [ "$FF_ARCH" = "x86_64" ]; then
    FF_ANDROID_PLATFORM=android-21

    FF_BUILD_NAME=ffmpeg-x86_64
    FF_BUILD_NAME_OPENSSL=openssl-x86_64
    FF_BUILD_NAME_X264=x264-x86_64
    FF_BUILD_NAME_LIBSOXR=libsoxr-x86_64
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME

    FF_CROSS_PREFIX=x86_64-linux-android
    FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_64_VER}

    FF_CFG_FLAGS="$FF_CFG_FLAGS --arch=x86_64 --enable-yasm"

    FF_EXTRA_CFLAGS="$FF_EXTRA_CFLAGS"
    FF_EXTRA_LDFLAGS="$FF_EXTRA_LDFLAGS"

    FF_ASSEMBLER_SUB_DIRS="x86"

elif [ "$FF_ARCH" = "arm64" ]; then
    FF_ANDROID_PLATFORM=android-21

    FF_BUILD_NAME=ffmpeg-arm64
    FF_BUILD_NAME_OPENSSL=openssl-arm64
    FF_BUILD_NAME_X264=x264-arm64
    FF_BUILD_NAME_LIBSOXR=libsoxr-arm64
    FF_SOURCE=$FF_BUILD_ROOT/$FF_BUILD_NAME

    FF_CROSS_PREFIX=aarch64-linux-android
    FF_TOOLCHAIN_NAME=${FF_CROSS_PREFIX}-${FF_GCC_64_VER}

    FF_CFG_FLAGS="$FF_CFG_FLAGS --arch=aarch64 --enable-yasm"

    FF_EXTRA_CFLAGS="$FF_EXTRA_CFLAGS"
    FF_EXTRA_LDFLAGS="$FF_EXTRA_LDFLAGS"

    FF_ASSEMBLER_SUB_DIRS="aarch64 neon"

else
    echo "unknown architecture $FF_ARCH";
    exit 1
fi

if [ ! -d $FF_SOURCE ]; then
    echo ""
    echo "!! ERROR"
    echo "!! Can not find FFmpeg directory for $FF_BUILD_NAME"
    echo "!! Run 'sh init-android.sh' first"
    echo ""
    exit 1
fi

FF_TOOLCHAIN_PATH=$FF_BUILD_ROOT/build/$FF_BUILD_NAME/toolchain
FF_MAKE_TOOLCHAIN_FLAGS="$FF_MAKE_TOOLCHAIN_FLAGS --install-dir=$FF_TOOLCHAIN_PATH"

FF_SYSROOT=$FF_TOOLCHAIN_PATH/sysroot
FF_PREFIX=$FF_BUILD_ROOT/build/$FF_BUILD_NAME/output
FF_DEP_OPENSSL_INC=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/include
FF_DEP_OPENSSL_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_OPENSSL/output/lib
FF_DEP_X264_INC=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_X264/output/include
FF_DEP_X264_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_X264/output/lib
FF_DEP_LIBSOXR_INC=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_LIBSOXR/output/include
FF_DEP_LIBSOXR_LIB=$FF_BUILD_ROOT/build/$FF_BUILD_NAME_LIBSOXR/output/lib

case "$UNAME_S" in
    CYGWIN_NT-*)
        FF_SYSROOT="$(cygpath -am $FF_SYSROOT)"
        FF_PREFIX="$(cygpath -am $FF_PREFIX)"
    ;;
esac


mkdir -p $FF_PREFIX
# mkdir -p $FF_SYSROOT


FF_TOOLCHAIN_TOUCH="$FF_TOOLCHAIN_PATH/touch"
if [ ! -f "$FF_TOOLCHAIN_TOUCH" ]; then
    $ANDROID_NDK/build/tools/make-standalone-toolchain.sh \
        $FF_MAKE_TOOLCHAIN_FLAGS \
        --platform=$FF_ANDROID_PLATFORM \
        --toolchain=$FF_TOOLCHAIN_NAME
    touch $FF_TOOLCHAIN_TOUCH;
fi


#--------------------
echo ""
echo "--------------------"
echo "[*] check ffmpeg env"
echo "--------------------"
export PATH=$FF_TOOLCHAIN_PATH/bin/:$PATH
#export CC="ccache ${FF_CROSS_PREFIX}-gcc"
export CC="${FF_CROSS_PREFIX}-gcc"
export LD=${FF_CROSS_PREFIX}-ld
export AR=${FF_CROSS_PREFIX}-ar
export STRIP=${FF_CROSS_PREFIX}-strip

FF_CFLAGS="-O3 -Wall -pipe \
    -std=c99 \
    -ffast-math \
    -fstrict-aliasing -Werror=strict-aliasing \
    -Wno-psabi -Wa,--noexecstack \
    -DANDROID -DNDEBUG"

# cause av_strlcpy crash with gcc4.7, gcc4.8
# -fmodulo-sched -fmodulo-sched-allow-regmoves

# --enable-thumb is OK
#FF_CFLAGS="$FF_CFLAGS -mthumb"

# not necessary
#FF_CFLAGS="$FF_CFLAGS -finline-limit=300"

export COMMON_FF_CFG_FLAGS=
. $FF_BUILD_ROOT/../../config/module.sh


#--------------------
# with openssl
if [ -f "${FF_DEP_OPENSSL_LIB}/libssl.a" ]; then
    echo "OpenSSL detected"
# FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-nonfree"
    FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-openssl"

    FF_CFLAGS="$FF_CFLAGS -I${FF_DEP_OPENSSL_INC}"
    FF_DEP_LIBS="$FF_DEP_LIBS -L${FF_DEP_OPENSSL_LIB} -lssl -lcrypto"
fi

# with libx264
if [ -f "${FF_DEP_X264_LIB}/libx264.a" ]; then
    echo "libx264 detected"
    FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-libx264"
        FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-encoder=libx264"
    FF_CFLAGS="$FF_CFLAGS -I${FF_DEP_X264_INC}"
    FF_DEP_LIBS="$FF_DEP_LIBS -L${FF_DEP_X264_LIB} -lx264"
    export PKG_CONFIG_PATH="$FF_DEP_X264_LIB/pkgconfig":$FF_PREFIX/lib/pkgconfig
        echo $PKG_CONFIG_PATH
fi

if [ -f "${FF_DEP_LIBSOXR_LIB}/libsoxr.a" ]; then
    echo "libsoxr detected"
    FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-libsoxr"

    FF_CFLAGS="$FF_CFLAGS -I${FF_DEP_LIBSOXR_INC}"
    FF_DEP_LIBS="$FF_DEP_LIBS -L${FF_DEP_LIBSOXR_LIB} -lsoxr"
fi

FF_CFG_FLAGS="$FF_CFG_FLAGS $COMMON_FF_CFG_FLAGS"

#--------------------
# Standard options:
FF_CFG_FLAGS="$FF_CFG_FLAGS --prefix=$FF_PREFIX"

# Advanced options (experts only):
FF_CFG_FLAGS="$FF_CFG_FLAGS --cross-prefix=${FF_CROSS_PREFIX}-"
FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-cross-compile"
FF_CFG_FLAGS="$FF_CFG_FLAGS --target-os=linux"
FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-pic"
# FF_CFG_FLAGS="$FF_CFG_FLAGS --disable-symver"

if [ "$FF_ARCH" = "x86" ]; then
    FF_CFG_FLAGS="$FF_CFG_FLAGS --disable-asm"
else
    # Optimization options (experts only):
    FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-asm"
    FF_CFG_FLAGS="$FF_CFG_FLAGS --enable-inline-asm"
fi

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

#--------------------
echo ""
echo "--------------------"
echo "[*] configurate ffmpeg"
echo "--------------------"
cd $FF_SOURCE
if [ -f "./config.h" ]; then
    echo 'reuse configure'
else
    which $CC
    ./configure $FF_CFG_FLAGS \
        --extra-cflags="$FF_CFLAGS $FF_EXTRA_CFLAGS" \
        --extra-ldflags="$FF_DEP_LIBS $FF_EXTRA_LDFLAGS"
    make clean
fi

#--------------------
echo ""
echo "--------------------"
echo "[*] compile ffmpeg"
echo "--------------------"
cp config.* $FF_PREFIX
make $FF_MAKE_FLAGS > /dev/null
make install
mkdir -p $FF_PREFIX/include/libffmpeg
cp -f config.h $FF_PREFIX/include/libffmpeg/config.h

#--------------------
echo ""
echo "--------------------"
echo "[*] link ffmpeg"
echo "--------------------"
echo $FF_EXTRA_LDFLAGS

FF_C_OBJ_FILES=
FF_ASM_OBJ_FILES=
for MODULE_DIR in $FF_MODULE_DIRS
do
    C_OBJ_FILES="$MODULE_DIR/*.o"
    if ls $C_OBJ_FILES 1> /dev/null 2>&1; then
        echo "link $MODULE_DIR/*.o"
        FF_C_OBJ_FILES="$FF_C_OBJ_FILES $C_OBJ_FILES"
    fi

    for ASM_SUB_DIR in $FF_ASSEMBLER_SUB_DIRS
    do
        ASM_OBJ_FILES="$MODULE_DIR/$ASM_SUB_DIR/*.o"
        if ls $ASM_OBJ_FILES 1> /dev/null 2>&1; then
            echo "link $MODULE_DIR/$ASM_SUB_DIR/*.o"
            FF_ASM_OBJ_FILES="$FF_ASM_OBJ_FILES $ASM_OBJ_FILES"
        fi
    done
done

$CC -lm -lz -shared --sysroot=$FF_SYSROOT -Wl,--no-undefined -Wl,-z,noexecstack $FF_EXTRA_LDFLAGS \
    -Wl,-soname,libijkffmpeg.so \
    $FF_C_OBJ_FILES \
    $FF_ASM_OBJ_FILES \
    $FF_DEP_LIBS \
    -o $FF_PREFIX/libijkffmpeg.so

mysedi() {
    f=$1
    exp=$2
    n=`basename $f`
    cp $f /tmp/$n
    sed $exp /tmp/$n > $f
    rm /tmp/$n
}

echo ""
echo "--------------------"
echo "[*] create files for shared ffmpeg"
echo "--------------------"
rm -rf $FF_PREFIX/shared
mkdir -p $FF_PREFIX/shared/lib/pkgconfig
ln -s $FF_PREFIX/include $FF_PREFIX/shared/include
ln -s $FF_PREFIX/libijkffmpeg.so $FF_PREFIX/shared/lib/libijkffmpeg.so
cp $FF_PREFIX/lib/pkgconfig/*.pc $FF_PREFIX/shared/lib/pkgconfig
for f in $FF_PREFIX/lib/pkgconfig/*.pc; do
    # in case empty dir
    if [ ! -f $f ]; then
        continue
    fi
    cp $f $FF_PREFIX/shared/lib/pkgconfig
    f=$FF_PREFIX/shared/lib/pkgconfig/`basename $f`
    # OSX sed doesn't have in-place(-i)
    mysedi $f 's/\/output/\/output\/shared/g'
    mysedi $f 's/-lavcodec/-lijkffmpeg/g'
    mysedi $f 's/-lavfilter/-lijkffmpeg/g'
    mysedi $f 's/-lavformat/-lijkffmpeg/g'
    mysedi $f 's/-lavutil/-lijkffmpeg/g'
    mysedi $f 's/-lswresample/-lijkffmpeg/g'
    mysedi $f 's/-lswscale/-lijkffmpeg/g'
done

 

脚本中涉及x264的地方一定要改全，我因为有个地方没改全，导致编译的时候找不到x264。

compile-ffmpeg.sh文件不需要修改。

4 修改编译配置，开启编码器

进入config目录，修改编译配置脚本
这里使用的是module-default.sh。
完整脚本内容如下：

#! /usr/bin/env bash

#--------------------
# Standard options:
export COMMON_FF_CFG_FLAGS=
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --prefix=PREFIX"

# Licensing options:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-gpl"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-libx264"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-encoder=libx264"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-version3"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-nonfree"

# Configuration options:
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-static"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-shared"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-small"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-runtime-cpudetect"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-gray"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-swscale-alpha"

# Program options:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-programs"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-ffmpeg"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-ffplay"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-ffprobe"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-ffserver"

# Documentation options:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-doc"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-htmlpages"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-manpages"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-podpages"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-txtpages"

# Component options:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-avdevice"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-avcodec"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-avformat"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-avutil"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-swresample"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-swscale"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-postproc"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-avfilter"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-avresample"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-pthreads"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-w32threads"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-os2threads"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-network"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-dct"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-dwt"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-lsp"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-lzo"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-mdct"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-rdft"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-fft"

# Hardware accelerators:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-dxva2"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-vaapi"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-vda"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-vdpau"

# Individual component options:
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-everything"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-encoders"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-decoders"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-hwaccels"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-muxers"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-muxer=mp4"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-muxer=mpegts"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-muxer=flv"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-demuxers"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-parsers"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-bsfs"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-protocols"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-devices"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-filters"

# External library support:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-iconv"
# ...

export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-protocol=async"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-linux-perf"
# Advanced options (experts only):
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --cross-prefix=${FF_CROSS_PREFIX}-"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-cross-compile"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --sysroot=PATH"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --sysinclude=PATH"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --target-os=TAGET_OS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --target-exec=CMD"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --target-path=DIR"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --toolchain=NAME"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --nm=NM"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --ar=AR"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --as=AS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --yasmexe=EXE"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --cc=CC"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --cxx=CXX"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --dep-cc=DEPCC"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --ld=LD"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --host-cc=HOSTCC"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --host-cflags=HCFLAGS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --host-cppflags=HCPPFLAGS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --host-ld=HOSTLD"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --host-ldflags=HLDFLAGS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --host-libs=HLIBS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --host-os=OS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --extra-cflags=ECFLAGS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --extra-cxxflags=ECFLAGS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --extra-ldflags=ELDFLAGS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --extra-libs=ELIBS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --extra-version=STRING"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --optflags=OPTFLAGS"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --build-suffix=SUFFIX"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --malloc-prefix=PREFIX"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --progs-suffix=SUFFIX"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --arch=ARCH"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --cpu=CPU"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-pic"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-sram"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-thumb"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-symver"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-hardcoded-tables"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-safe-bitstream-reader"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-memalign-hack"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-lto"

# Optimization options (experts only):
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-asm"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-altivec"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-amd3dnow"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-amd3dnowext"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-mmx"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-mmxext"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-sse"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-sse2"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-sse3"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-ssse3"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-sse4"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-sse42"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-avx"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-fma4"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-armv5te"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-armv6"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-armv6t2"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-vfp"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-neon"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-vis"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-inline-asm"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-yasm"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-mips32r2"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-mipsdspr1"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-mipsdspr2"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-mipsfpu"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-fast-unaligned"

# Developer options (useful when working on FFmpeg itself):
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-coverage"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-debug"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-debug=LEVEL"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-optimizations"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-extra-warnings"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-stripping"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --assert-level=level"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-memory-poisoning"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --valgrind=VALGRIND"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-ftrapv"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --samples=PATH"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-xmm-clobber-test"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-random"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-random"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-random=LIST"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-random=LIST"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --random-seed=VALUE"

实际上脚本中比较关键的几个修改的地方如下：

# Licensing options:
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-gpl"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-libx264"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-encoder=libx264"
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-version3"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-nonfree"

# Individual component options:
# export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-everything"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-encoders"

主要是要开启编码器，并开启GPL，需要注意的是GPL开源协议是更严格的一种开源协议。GPL是代码的开源/免费使用和引用/修改/衍生代码的开源/免费使用，但不允许修改后和衍生的代码做为闭源的商业软件发布和销售。

执行
rm module.sh
ln -s module-default.sh module.sh

5 编译生成libijkffmpeg.so

进入android/contrib目录
执行
./compile-ffmpeg.sh clean
然后执行
./compile-ffmpeg.sh armv7a
然后顺利的话就会生成带有编码器的libijkffmpeg.so。

6 问题

         ^
libavcodec/libx264.c: In function 'X264_frame':
libavcodec/libx264.c:282:9: error: 'x264_bit_depth' undeclared (first use in this function)
     if (x264_bit_depth > 8)
         ^
libavcodec/libx264.c:282:9: note: each undeclared identifier is reported only once for each function it appears in
libavcodec/libx264.c: In function 'X264_init_static':
libavcodec/libx264.c:892:9: error: 'x264_bit_depth' undeclared (first use in this function)
     if (x264_bit_depth == 8)
         ^
make: *** [libavcodec/libx264.o] Error 1

报x264_bit_depth声明未找到的问题，导致编译失败。
http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=2a111c99a60fdf4fe5eea2b073901630190c6c93
根据上面这篇文章里讲的，应该是x264某个版本之后哪位大神将原来的x264_bit_depth改成了大写的X264_BIT_DEPTH。所以一个思路找到这个定义修改之前的某个版本的x264重新clone下来进行编译。后来发现还有另外一种方法更为简便，就是直接修改libx264.c文件，将此文件中的所有x264_bit_depth直接替换为X264_BIT_DEPTH，然后重新进行libijkffmpeg.so的编译。你没看错就是这么简单、粗暴！但是要注意的是修改的libx264.c的文件路径，不能修改错了。

文件路径在android/contrib/ffmpeg-armv7a/libavcodec目录下，我只编译armv7a架构的so，所以只改ffmpeg-armv7a目录下的文件。
然后重新执行一遍libijkffmpeg.so的编译过程，编译出来的so就支持视频编码了。


http://www.niftyadmin.cn/n/234627.html

相关文章

解读CANDT测试项-采样点测试

解读CANDT测试项-采样点测试

原标题&#xff1a;解读CANDT测试项-采样点测试 一、为什么要进行采样点测试&#xff1f; 本文引用地址&#xff1a;http://www.eepw.com.cn/article/202004/411611.htm 为了保证有效的通信&#xff0c;对于一个只有两个节点的CAN网络&#xff0c;其两边距离不超过最大的传输…
阅读更多...
（Deep Learning）交叉验证（Cross Validation）

（Deep Learning）交叉验证（Cross Validation）

交叉验证&#xff08;Cross Validation&#xff09; 交叉验证&#xff08;Cross Validation&#xff09;是一种评估模型泛化性能的统计学方法&#xff0c;它比单次划分训练集和测试集的方法更加稳定、全面。 交叉验证不但可以解决数据集中数据量不够大的问题&#xff0c;也可以…
阅读更多...
Java基础(十七)：日期时间API

Java基础(十七)：日期时间API

Java基础系列文章 Java基础(一)&#xff1a;语言概述 Java基础(二)&#xff1a;原码、反码、补码及进制之间的运算 Java基础(三)&#xff1a;数据类型与进制 Java基础(四)&#xff1a;逻辑运算符和位运算符 Java基础(五)&#xff1a;流程控制语句 Java基础(六)&#xff1…
阅读更多...
Linux学习笔记——HTTPS协议

Linux学习笔记——HTTPS协议

文章目录HTTPS是什么什么是加密为什么要进行加密常见的加密方式数据摘要与数据指纹数字签名HTTPS的工作过程探究方案1—只使对称加密方案2—只使非对称加密方案3—双方都是用非对称加密方案4—非对称加密对称加密中间人攻击证书方案5—非对称加密对称加密证书认证HTTPS是什么 H…
阅读更多...
Linux下IPv6配置

Linux下IPv6配置

准备工作&#xff1a;1、正确的IPV6地址。2、正确的网关地址。3、正确的路由地址。4、域名管理权限 1、执行ifconfig 看查询结果中是否存在int6服务&#xff0c;如果没有需要先安装ipv6模块。 2、编辑sysctl.conf&#xff0c;位置在/etc/sysctl.conf。将下列内容0改为1&#…
阅读更多...
刷完这篇文章，再也不怕链表啦！

刷完这篇文章，再也不怕链表啦！

刷完这篇文章&#xff0c;再也不怕链表啦&#xff01;寻找单链表的倒数第 k 个节点删除链表的倒数第 N 个结点旋转链表寻找单链表的中点删除链表中的节点删除链表的中间节点判断单链表是否包含环回文链表合并两个有序链表合并 k 个有序链表链表的分解反转链表反转链表 IIK 个一…
阅读更多...
【问题】开发遇到的小问题

【问题】开发遇到的小问题

文章目录使用糊涂工具&#xff0c;将时间字符串转化为LocalDateTime类型Date类型转换LocalDate类型jdk8 LocalDateTime获取当前时间和前后推时间echarts图中显示表格是需要添加宽高前端往后端传值时&#xff0c;需要转一下对象再往后端传使用 value-format"yyyy-MM-dd HH:…
阅读更多...
练习Tomcat

练习Tomcat

文章目录1. 简述静态网页和动态网页的区别。2. 简述 Webl.0 和 Web2.0 的区别。3. 安装tomcat8&#xff0c;配置服务启动脚本&#xff0c;部署jpress应用。1. 简述静态网页和动态网页的区别。 静态网页&#xff1a; &#xff08;1&#xff09;静态网页不能简单地理解成静止不…
阅读更多...
最新文章

Copyright @ 2022~2023