AllanChen

#import "AppDelegate.h"
#include <stdio.h>
@interface AppDelegate ()
@end

@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
//    [self namolData];
//    [self test];
//    [self test2];

AllanChen

//
//  ViewController.m
//  compare
//
//  Created by Allan on 27/7/2019.
//  Copyright © 2019 Allan. All rights reserved.
//

#import "ViewController.h"
#include <arm_neon.h>

AllanChen

MySQL

Getting started

• http://www.sqlteaching.com/
• https://www.codecademy.com/learn/learn-sql

Related tutorials

• MySQL-CLI
• Analyzing Business Metrics
• SQL joins infografic

AllanChen

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/stat.h>

typedef unsigned char uint8_t;
 
/** 
 * @param src input nv12 raw data array  

AllanChen

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2017 Chukong Technologies Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

AllanChen

+ (void)writeDataToFile:(NSString *)fileName wirteData:(NSData*)data{
    NSString *filePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] stringByAppendingPathComponent:fileName];
    BOOL fileExists = [self fileExists:fileName];
    if(fileExists){
        NSFileHandle *fileHandle = [NSFileHandle fileHandleForWritingAtPath:filePath];
        [fileHandle seekToEndOfFile];
        [fileHandle writeData:data];
        [fileHandle closeFile];
    }
    else{

AllanChen

-(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 = ((bytesPerPixel*width+255)/256)*256;

AllanChen

@interface SREAGLContext : NSObject

+ (EAGLContext*)sharedContext;

+ (EAGLContext*)newContext: (EAGLRenderingAPI) api;

@end

@implementation SREAGLContext

AllanChen

CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
CVPixelBufferLockBaseAddress(imageBuffer,0);

size_t height = CVPixelBufferGetHeight(imageBuffer);
size_t width = CVPixelBufferGetWidth(imageBuffer);
size_t bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer);

void *sourceData = CVPixelBufferGetBaseAddress(imageBuffer);

// Set a bunch of variables we need. The "radius" for the blur kernel needs to be positive and odd. The permute map maps the BGRA channels of the buffer to the ARGB that vImage needs.

AllanChen

Previous versions used homebrew to install the various versions. As suggested in the comments, it's better to use pyenv instead. If you are looking for the previous version of this document, see the revision history.

$ brew update
$ brew install pyenv
$ pyenv install 3.5.0
$ pyenv install 3.4.3
$ pyenv install 3.3.6
$ pyenv install 3.2.6
$ pyenv install 2.7.10

$ pyenv install 2.6.9