From 6c1a5cc01c4b94ef26267b1e1fa906d120ab9230 Mon Sep 17 00:00:00 2001
From: Hu Chunming <2657262686@qq.com>
Date: Thu, 1 Aug 2024 14:29:23 +0800
Subject: [PATCH] 优化readme

---
 readme.md | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/readme.md b/readme.md
index a3e369e..2324b9d 100755
--- a/readme.md
+++ b/readme.md
@@ -10,13 +10,37 @@
 # 三方库编译
 ### ffmpeg编译
 ~~~
-./configure --enable-debug --extra-cflags=-g --extra-ldflags=-g --disable-optimizations --disable-stripping --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --prefix=./release
+./configure --enable-debug --extra-cflags=-g --extra-ldflags=-g --disable-optimizations --disable-stripping --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --prefix=./debug
 ~~~
 其中以下是用于调试的，编译release可以去掉：
 ~~~
 --enable-debug --extra-cflags=-g --extra-ldflags=-g --disable-optimizations --disable-stripping
 ~~~
+编译release版本
+~~~
+./configure --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --prefix=./release
+~~~
 然后 make , make install
+##### 支持H264版本编译
+~~~
+export PKG_CONFIG_PATH=/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib/pkgconfig:$PKG_CONFIG_PATH
+~~~
+主要h264的pkgconfig文件xh264.pc中的prefix路径，改为绝对路径比较容易编译，如改成
+~~~
+prefix=/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release
+~~~
+~~~
+./configure --prefix=./debug --enable-debug --extra-cflags=-g --extra-ldflags=-g --disable-optimizations --disable-stripping --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --enable-demuxers --enable-parsers --enable-ffprobe --enable-libx264 --enable-gpl --enable-pthreads --extra-cflags="-I/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib/include" --extra-ldflags="-L/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib"
+~~~
+其中
+~~~
+--enable-demuxers --enable-parsers --enable-ffprobe
+~~~
+是用来支持内存数据的probe的。
+对应的release版本编译命令
+~~~
+./configure --prefix=./release --disable-x86asm --enable-nonfree --disable-vaapi --extra-cflags=-fPIC --enable-shared --enable-pic --enable-ffplay --enable-demuxers --enable-parsers --enable-ffprobe --enable-libx264 --enable-gpl --enable-pthreads --extra-cflags="-I/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib/include" --extra-ldflags="-L/home/cmhu/vpt_ascend_arm/3rdparty/ffmpeg-4.4.4/x264/release/lib"
+~~~
 
 ### jsoncpp/opencv/spdlog 编译
 ~~~
--
libgit2 0.21.4