ffmpeg rk3568
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.gitignore
vendored
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2
.gitignore
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.idea
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.vscode
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23
cmake.md
23
cmake.md
@ -24,7 +24,7 @@ cmake的使用围绕着 编译选项 头文件 库文件搜索路径，需要编
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```cmake
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set(key value) #定义变量 也可以拼接变量
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# 使用时通过 ${key} 取值
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set(变量名1 ${变量名1} ${变量名2} ...)
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set(变量名1 ${xxx1} ${xxx2} ...)
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list(APPEND <list> [<element> ...])
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# list 也可以移除
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@ -39,7 +39,7 @@ add_subdirectory(source_dir [binary_dir] [EXCLUDE_FROM_ALL])
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### cmake中常见的预设变量
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下面的列表中为大家整理了一些CMake中常用的宏：
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下面的列表中为一些CMake中常用的宏：
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| 宏 | 含义 |
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| ------------------------ | ------------------------------------------------------------ |
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@ -221,11 +221,11 @@ target_include_directories(test1 PUBLIC include/test2)
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```cmake
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# 关于条件判断其语法格式如下：
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if(<condition>)
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<commands>
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# <commands>
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elseif(<condition>) # 可选快, 可以重复
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<commands>
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#<commands>
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else() # 可选快
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<commands>
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#<commands>
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endif()
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# 在进行条件判断的时候，如果有多个条件，那么可以写多个elseif，最后一个条件可以使用else，但是开始和结束是必须要成对出现的，分别为：if和endif。
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```
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@ -235,14 +235,14 @@ endif()
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# 基本表达式
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if(<expression>) # NOT AND OR
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#]=]
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如果是基本表达式，expression 有以下三种情况：常量、变量、字符串。
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如果是1, ON, YES, TRUE, Y, 非零值，非空字符串时，条件判断返回True
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如果是 0, OFF, NO, FALSE, N, IGNORE, NOTFOUND，空字符串时，条件判断返回False
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#]=]
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# 如果是基本表达式，expression 有以下三种情况：常量、变量、字符串。
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# 如果是1, ON, YES, TRUE, Y, 非零值，非空字符串时，条件判断返回True
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# 如果是 0, OFF, NO, FALSE, N, IGNORE, NOTFOUND，空字符串时，条件判断返回False
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# ]=]
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# 逻辑判断
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if( <condition>)
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# 其实这就是一个取反操作，如果条件condition为True将返回False，如果条件condition为False将返回True。
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如果cond1和cond2两个条件中至少有一个为True，返回True，如果两个条件都为False则返回False。
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# 如果cond1和cond2两个条件中至少有一个为True，返回True，如果两个条件都为False则返回False。
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```
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比较
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@ -280,7 +280,7 @@ if(<variable|string> STRGREATER_EQUAL <variable|string>)
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```cmake
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foreach(<loop_var> <items>)
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<commands>
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# <commands>
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endforeach()
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```
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@ -315,7 +315,6 @@ project(test)
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foreach(item RANGE 10 30 2)
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message(STATUS "当前遍历的值为: ${item}" )
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endforeach()
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```
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166
ffmpeg.md
166
ffmpeg.md
@ -72,7 +72,7 @@ sudo make install
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# ./ffmpeg -hwaccels 查看支持哪些硬件编码
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```
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**编译ffmeg arm64版本**
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### 编译ffmeg arm64安卓版本
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在源码目录下创建buildarm64.sh，内容如下
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@ -149,6 +149,170 @@ chomd +x buildarm64.sh
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./buildarm64.sh
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# 编译好后，对应的源文件和库文件会安装到./android/armv-v8a中
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```
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### 在rk3568上交叉编译ffmpeg
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使用瑞芯微上使用其硬件加速编码和解码
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创建一个目录 ~/dev 之后所有的操作在这个目录下进行
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1. 编译mpp
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```shell
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git clone -b jellyfin-mpp --depth=1 https://github.com/nyanmisaka/mpp.git rkmpp
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mkdir rkmpp_build
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pushd rkmpp_build
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# 在cmake中指定交叉工具链gcc和g++ 改成自己的目录
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# 注意在不要安装到本机的系统目录，最好新建一个目录，之后把所有的依赖安装到这个目录
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cmake \
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-DCMAKE_INSTALL_PREFIX=~/dev/rkffmpeg \
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-DCMAKE_BUILD_TYPE=Release \
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-DBUILD_SHARED_LIBS=ON \
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-DBUILD_TEST=OFF \
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-DCMAKE_C_COMPILER=/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/bin/aarch64-linux-gcc \
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-DCMAKE_CXX_COMPILER=/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/bin/aarch64-linux-g++ \
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..
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make -j $(nproc)
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make install
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```
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2. build rga
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创建一个在~/dev 目录下创建cross_file.txt, 将工具链换成自己的,以及安装目录
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```txt
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[host_machine]
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system = 'linux'
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cpu_family = 'aarch64'
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cpu = 'armv8-a'
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endian = 'little'
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[binaries]
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c = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/bin/aarch64-linux-gcc'
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cpp = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/bin/aarch64-linux-g++'
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ar = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/aarch64-rockchip-linux-gnu/bin/ar'
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strip = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/aarch64-rockchip-linux-gnu/bin/strip'
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[properties]
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c_args = ['-fpermissive']
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cpp_args = ['-fpermissive']
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[paths]
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prefix = '~/dev/rkffmpeg'
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libdir = 'lib'
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```
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```shell
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git clone -b jellyfin-rga --depth=1 https://github.com/nyanmisaka/rk-mirrors.git rkrga
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# 不需要cd 进行
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meson setup rkrga rkrga_build \
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--prefix=/usr \
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--libdir=lib \
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--buildtype=release \
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--default-library=shared \
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-Dcpp_args=-fpermissive \
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-Dlibdrm=false \
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-cross-file=./cross_file.txt \
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-Dlibrga_demo=false
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meson configure rkrga_build
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ninja -C rkrga_build install
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```
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3. 编译drm
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首先去官网下载源码包https://dri.freedesktop.org/libdrm/
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下载完成后，开始解压缩，解压缩完成后，进入源码目录，首先创建install和build目录，然后创建cross_file.txt文件，文件内容如下
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```txt
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[host_machine]
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system = 'linux'
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cpu_family = 'aarch64'
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cpu = 'armv8-a'
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endian = 'little'
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[binaries]
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c = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/bin/aarch64-linux-gcc'
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cpp = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/bin/aarch64-linux-g++'
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ar = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/aarch64-rockchip-linux-gnu/bin/ar'
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strip = '/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/aarch64-rockchip-linux-gnu/bin/strip'
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[properties]
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c_args = ['-fpermissive']
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cpp_args = ['-fpermissive']
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[paths]
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prefix = '~/dev/rkffmpeg'
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libdir = 'lib'
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```
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然后直接执行指令ninja && ninja install即可使用
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4. 编译ffmpeg
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上面的依赖编译并安装好后，正式开始编译ffmpeg，添加rk芯片的mpp来加速编解码
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在~/dev 下载ffmpeg 进入到源码目录 创建build.sh 内容如下
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```shell
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#!/bin/bash
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export TOOLCHAIN=/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/bin/aarch64-linux
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export GCC=$TOOLCHAIN-gcc
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export GXX=$TOOLCHAIN-g++
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# 编译到开发版，尽可能小一些(--enable-small)，取消了一些其它硬件加速和封装
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# 更换 cc cxx ar strip 以及--extra-cflags --extra-ldflags
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function build_android
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{
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./configure \
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--sysroot=./ \
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--extra-cflags="-I~/dev/rkffmpeg/include" \
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--extra-ldflags="-L~/dev/rkffmpeg/lib" \
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--prefix=$PREFIX \
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--enable-cross-compile \
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--arch=arm64 \
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--cpu=armv8-a \
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ar=/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/aarch64-rockchip-linux-gnu/bin/ar \
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strip=/home/user/baidu/buildroot-cross/gcc_for_rk356x_buildroot/aarch64-rockchip-linux-gnu/bin/strip \
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--cc=$GCC \
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--cxx=$GXX \
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--enable-libdrm \
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--disable-nvenc \
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--disable-nvdec \
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--disable-vdpau \
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--disable-vaapi \
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--enable-rkmpp \
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--enable-rkrga \
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--enable-version3 \
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--disable-programs \
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--disable-avdevice \
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--disable-muxers \
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--disable-filters \
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--enable-neon \
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--enable-gpl \
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--disable-sdl2 \
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--disable-postproc \
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--disable-debug \
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--enable-small \
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--enable-static \
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--enable-shared \
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--disable-doc \
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--enable-ffmpeg \
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--disable-ffprobe \
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--disable-avdevice \
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--disable-doc \
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--disable-symver
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echo "============================ build android arm64-v8a success =========================="
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}
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#arm64-v8a
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PREFIX=$(pwd)/rk-arm64
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build_android
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```
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编译
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```shell
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chmod +x build.sh
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make clean
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make -j16
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make install
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```
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最后把编译好的ffmpeg 放到~/dev/rkffmpeg 中 一并打包移植到开发版上
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## 硬编码
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