learn write code from webrtc project
the webrtc lib ia from
https://sourcey.com/precompiled-webrtc-libraries
version webrtc-22215-ab42706-linux-x64.tar.gz
bmp2jpep https://github.com/ValleyXu/Conversion-Between-JPEG-and-BMP
SYConverter https://github.com/shenyuanluo/SYKit
other tools for possible usage:
https://github.com/IENT/YUView
x264 install
https://www.cnblogs.com/ziyu-trip/p/6783165.html
rror while loading shared libraries: libx264.so.2:
cannot open shared object file: No such file or directory
su
echo "/usr/local/lib" >> /etc/ld.so.conf
ldconfig
https://stackoverflow.com/questions/11838456/undefined-reference-to-x264-encoder-open-125/17174658
apt-get remove x264
LD_LIBRARY_PATH=/path/to/my/compiled/x264/library
ffmpeg
https://blog.csdn.net/a805995924/article/details/39435261
https://gist.github.com/teocci/f7a438013a0197a91446ee86de41faee
ffmepg yuv
ffplay -f rawvideo -pixel_format rgb24 -s 480*480 texture.rgb
YUV和RGB详解: https://segmentfault.com/a/1190000016443536
export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
ffplay h264 raw:
https://github.com/SoonyangZhang/base/tree/master/video_tool
ffplay -stats -f h264 1280x720.h264
h264 tool:
https://github.com/latelee/H264BSAnalyzer
x264 slice type
* Slice type */
#define X264_TYPE_AUTO 0x0000 /* Let x264 choose the right type */
#define X264_TYPE_IDR 0x0001
#define X264_TYPE_I 0x0002
#define X264_TYPE_P 0x0003
#define X264_TYPE_BREF 0x0004 /* Non-disposable B-frame */
#define X264_TYPE_B 0x0005
slice type
http://gentlelogic.blogspot.com/2011/11/exploring-h264-part-2-h264-bitstream.html
指数哥伦布编码：
https://www.jianshu.com/p/f4f3b0764cec
x264 preset
https://blog.csdn.net/NB_vol_1/article/details/78363559
I found that, The operation to refer frame instead of copy can reduce frame queue delay and reduce frame dropping.
//videocodec.h
//old version
struct FrameTs{
FrameTs(webrtc::VideoFrame *f,uint32_t ts):frame(f),enqueTs(ts){}
webrtc::VideoFrame *frame;
uint32_t enqueTs;
};
//videocodec.cc
webrtc::VideoFrame *copy=new webrtc::VideoFrame(frame);
f=temp.frame;
//improve version
struct FrameTs{
FrameTs(const webrtc::VideoFrame &f,uint32_t ts):frame(f),enqueTs(ts){}
FrameTs(const FrameTs&)=default; //for deque front
webrtc::VideoFrame frame;
uint32_t enqueTs;
};
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