happyj2me’s gists

happyj2me / webrtc-qos

Last active February 9, 2023 12:30

	1. 输入编码器的帧率，分辨率控制
	PeerConnectionClient.java::createVideoTrack方法里面加入一行 changeCaptureFormat(videoWidth,videoHeight,videoFps);

	2. 编码器目标码率设置
	PeerConnectionClient.java::onLocalDescription方法里面，调用setVideoMaxBitrate方法进行设置，该方法主体如下:
	RtpParameters parameters = localVideoSender.getParameters();
	if (parameters.encodings.size() == 0) {
	Log.w(TAG, "RtpParameters are not ready.");
	return;
	}

happyj2me / readelf

Last active September 2, 2019 03:27

	ar -x libscy.a
	readelf -s -W logger.cpp.o \| grep Rotating
	306: 0000000000000000 1405 FUNC GLOBAL DEFAULT 181 _ZN3scy19RotatingFileChannel5writeERKNS_9LogStreamE
	307: 0000000000000000 3092 FUNC GLOBAL DEFAULT 183 _ZN3scy19RotatingFileChannel6rotateEv
	308: 0000000000000000 1221 FUNC GLOBAL DEFAULT 175 _ZN3scy19RotatingFileChannelC1ENSt3__112basic_stringIcNS1_11char_traitsIcEENS1_9allocatorIcEEEES7_NS_5LevelES7_iS7_
	309: 0000000000000000 1221 FUNC GLOBAL DEFAULT 175 _ZN3scy19RotatingFileChannelC2ENSt3__112basic_stringIcNS1_11char_traitsIcEENS1_9allocatorIcEEEES7_NS_5LevelES7_iS7_
	310: 0000000000000000 40 FUNC GLOBAL DEFAULT 179 _ZN3scy19RotatingFileChannelD0Ev
	311: 0000000000000000 367 FUNC GLOBAL DEFAULT 177 _ZN3scy19RotatingFileChannelD1Ev
	312: 0000000000000000 367 FUNC GLOBAL DEFAULT 177 _ZN3scy19RotatingFileChannelD2Ev
	527: 0000000000000230 24 OBJECT GLOBAL DEFAULT 443 _ZTIN3scy19RotatingFileChannelE

happyj2me / connect

Created April 22, 2019 09:21

	int connect_timeout(int sockfd, const struct sockaddr *addr,
	socklen_t addrlen, struct timeval *timeout)
	{
	int flags = fcntl( sockfd, F_GETFL, 0 );
	if (flags == -1) {
	return -1;
	}
	if (fcntl( sockfd, F_SETFL, flags \| O_NONBLOCK ) < 0) {
	return -1;
	}

happyj2me / libevent

Created April 22, 2019 09:01

	http://senlinzhan.github.io/2017/08/20/libevent-buffer/

	#include <event2/listener.h>
	#include <event2/bufferevent.h>
	#include <event2/buffer.h>
	#include <arpa/inet.h>
	#include <string.h>
	#include <iostream>
	void echo_read_cb(struct bufferevent bev, void ctx)
	{

happyj2me / webrtc

Last active October 14, 2023 14:28

	1.linux平台， webrtc抽取出来静态库和头文件，先用ninja编译完webrtc，然后进入src/out/linux目录(假设src目录下是webrtc相关的代码)
	1.1 提取所有的.o生成libwebrtc_full.a
	.ninja_log 里面可以找到所有的.a ; .ninja_deps里面可以找到所有的.o, 但建议用.a去构建最终的静态库
	cat libwebrtc_full.ar
	CREATE libwebrtc_full.a
	ADDLIB obj/third_party/boringssl/libboringssl.a
	ADDLIB obj/third_party/protobuf/libprotobuf_full.a
	ADDLIB obj/libwebrtc.a
	SAVE
	END

happyj2me / yuv

Created April 17, 2019 12:02

	I420: YYYYYYYYUUVV (x264编码器的输入数据格式)
	NV12: YYYYYYYYUVUV (media codec 喜欢这个格式的数据)
	NV21: YYYYYYYYVUVU (android camera 回调的yuv数据格式)

happyj2me / webrtc-struct

Last active July 3, 2019 06:41

http://www.artvc-mcu.top:9000/webrtc.xhtml

happyj2me / socket

Created April 9, 2019 03:28

	1.绑定到一个操作系统随机分配的udp端口，绑定成功后获取到这个端口
	int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
	if(fd < 0) {
	JANUS_LOG(LOG_ERR, "Error creating RTCP socket for new RTP forwarder... %d (%s)\n",
	errno, strerror(errno));
	return 0;
	}
	struct sockaddr_in address;
	socklen_t len = sizeof(address);
	memset(&address, 0, sizeof(address));

happyj2me / and-apprtc

Created March 21, 2019 06:32

	1.获取webrtc代码拉取以及编译的工具
	cd /home/kevin/webrtc
	git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
	export PATH=/home/kevin/webrtc/depot_tools:$PATH

	2. 获取webrtc-master分支的最新代码
	cd /home/kevin/webrtc/linux
	fetch --no-hooks webrtc_android
	gclient sync
	cd src

happyj2me / quick

Last active May 17, 2019 03:46

	xcode:
	1. shift + command + o : 全局查找某个类文件
	2. contr + command + 左键 : 函数跳转
	3. contr + command + -> : h跳转到cc文件
	4. optio + command + -> : 函数定义折叠

	vscode: https://nshen.net/article/2015-11-20/vscode/
	1. ctrl + shift + p or ctrl + p : 进入两种模式，可以查找文件等，增删<符号可以在两种模式之间切换
	2. ctrl + shift + n or ctrl + shit + w : 打开关闭一个窗口
	3. ctrl + g : 调到某一行

kevin happyj2me