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roadmap

System: Debian/Ubuntu/Fedora. Might work for others as well.

As mentioned here, to update a go version you will first need to uninstall the original version.

To uninstall, delete the /usr/local/go directory by:

###1. 推流端直播技术的流程大致可以分为几个步骤：数据采集、数据处理、视频编码、封包发送、云端(服务端)（转码、录制、分发）、播放器。

数据采集：通过摄像头和麦克风获得实时的音视频数据;
数据处理：将数据采集的输入流进行实时滤镜，得到我们美化之后的音视频数据, 视频包括各种处理滤镜,美颜,动态贴纸等, 音频包括降噪, 放大等处理;
音视频编码：编码分为软编码和硬编码。现在直播默认的编码都是 H.264。软编码是利用 CPU 进行编码，硬编码就是使用 GPU 进行编码。软编码支持现在所有的系统版本。由于苹果在 iOS8 才开放硬编码的 API，故硬编码只支持 iOS8 以上的系统;
封包发送：现在直播推流中，一般采用的格式是 FLV , 然后利用 ffmpeg 或者 librtmp 进行传输, 这两者封包的处理是不一样的,我们采用的是 ffmpeg , 所以没有对 librtmp 进行深入的研究;
云端(服务端)：进行流的转码、分发和录制；
播放器：负责拉流、解码、播放。

Open in a new tab all to-be-deleted github repositores (Use the mouse’s middle click or Ctrl + Click) https://github.com/username?tab=repositories
Use one tab https://chrome.google.com/webstore/detail/onetab/chphlpgkkbolifaimnlloiipkdnihall to shorten them to a list.
Save that list to some path
The list should be in the form of “ur_username\repo_name” per line. Use regex search (Sublime text could help). Search for ' |.*' and replace by empty.

	#import <AVFoundation/AVFoundation.h>

	@interface AVCaptureDevice(Additions)

	+ (NSArray<AVCaptureDevice >)inputCameraDevices;
	- (BOOL)isBuiltIn;
	- (BOOL)hasVideoMedia;
	- (BOOL)canOpenCamera;

	@end

	-(CVPixelBufferRef)imageToYUVPixelBuffer:(UIImage *)image{
	// convert to CGImage & dump to bitmapData

	CGImageRef imageRef = [image CGImage];
	int width = (int)CGImageGetWidth(imageRef);
	int height = (int)CGImageGetHeight(imageRef);

	CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
	NSUInteger bytesPerPixel = 4;
	NSUInteger bytesPerRow = ((bytesPerPixelwidth+255)/256)256;

	//
	// headphones-detect.c
	// Kyle Neideck, [email protected]
	//
	// Compile with:
	// clang -framework CoreAudio -framework CoreFoundation -o headphones-detect headphones-detect.c
	//
	// Runs a command when headphones are plugged in to or unplugged from the
	// built-in audio device.
	//

	//
	// ViewController.swift
	// MP3RecordingSample
	//
	// Created by Tadashi on 2017/10/13.
	// Copyright © 2017 UBUNIFU Inc. All rights reserved.
	//
	import UIKit
	import AVFoundation
	import AudioToolbox

	# impor spark, set spark context
	from pyspark import SparkContext, SparkConf
	from pyspark.sql.context import SQLContext
	import sys
	import os

	if len(sys.argv) == 1:
	sys.stderr.write("Must enter input file to convert")
	sys.exit()
	input_file = sys.argv[1]

	//
	// PLGPUImageFilterViewController.m
	// PLStreamingKit
	//
	// Created by 0dayZh on 16/3/8.
	// Copyright © 2016年 0dayZh. All rights reserved.
	//

	#import "PLGPUImageFilterViewController.h"
	#import "GPUImage.h"