ffmpeg: Add the steps to connect kahawai with openh264 encoder (#123)

* plugin/ffmpeg: add the steps to connect kahawai with openh264 encoder

Signed-off-by: Jing Sun <[email protected]>
(cherry picked from commit e4750e9)

Author: jsunintel

plugins/ffmpeg_plugin/README.md

@@ -10,6 +10,8 @@ One-session example: ffmpeg -framerate 60 -pixel_format yuv422p10le -width 1920
 
 Two-sessions example: ffmpeg -framerate 60 -pixel_format yuv422p10le -width 1920 -height 1080 -udp_port 20000 -port 0000:31:00.0 -local_addr "192.168.96.2" -src_addr "239.168.85.20" -total_sessions 2 -ext_frames_mode 1 -f kahawai -i "1" -framerate 60 -pixel_format yuv422p10le -width 1920 -height 1080 -udp_port 20001 -port 0000:31:00.0 -local_addr "192.168.96.3" -src_addr "239.168.85.20" -total_sessions 2 -ext_frames_mode 1 -f kahawai -i "2" -map 0:0 -vframes 5000 -f rawvideo /dev/null -y -map 1:0 -vframes 5000 -f rawvideo /dev/null -y
 
+With openh264 encoder example: ffmpeg -framerate 60 -pixel_format yuv422p10le -width 1920 -height 1080 -udp_port 20000 -port 0000:31:00.0 -local_addr "192.168.96.2" -src_addr "239.168.85.20" -dma_dev "0000:00:01.0" -ext_frames_mode 1 -f kahawai -i "k" -vframes 2000 -c:v libopenh264 out.264 -y
+
 Parameters description:
 1. "framerate" supports 25, 30, 59, 60 and 120.
 2. "pixel_format" supports yuv422p10le only for now.

plugins/ffmpeg_plugin/build_ffmpeg_plugin.sh

@@ -2,6 +2,19 @@
 
 EX_PATH=${PWD}
 
+build_openh264(){
+    if [ ! -d "./openh264" ];then
+        git clone https://github.com/cisco/openh264.git
+    fi
+
+    cd ./openh264
+    git checkout -b openh264v2.3.1 origin/openh264v2.3.1
+    make -j32
+    sudo make install
+    sudo ldconfig
+    cd ../
+}
+
 build_ffmpeg(){
     if [ ! -d "./ffmpeg" ];then
         git clone https://git.ffmpeg.org/ffmpeg.git
@@ -13,13 +26,15 @@ build_ffmpeg(){
     git reset --hard aa28df74ab197c49a05fecc40c81e0f8ec4ad0c3
     cp -f ../kahawai.c ./libavdevice/
     git am --whitespace=fix ../0001-avdevice-kahawai-Add-the-kahawai-input-device-plugin.patch
-    ./configure --enable-shared --disable-static --enable-nonfree --enable-pic --enable-gpl --enable-mtl
+    ./configure --enable-shared --disable-static --enable-nonfree --enable-pic --enable-gpl --enable-mtl --enable-libopenh264 --enable-encoder=libopenh264
     make clean
     make -j32
     sudo make install
+    sudo ldconfig
     cd ../
 }
 
+build_openh264
 build_ffmpeg
 
 echo "Building ffmpeg plugin is finished"