PublishController.m 27.9 KB

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//
//  PublishController.m
//  RTMPiOSDemo
//
//  Created by 蓝鲸 on 16/4/1.
//  Copyright © 2016年 tencent. All rights reserved.
//

#import "PublishController.h"
#import "PlayController.h"
#import "ScanQRController.h"
//#import <Foundation/Foundation.h>
//#import "TXLiveSDKTypeDef.h"
#import <sys/types.h>
#import <sys/sysctl.h>
//#import <UIKit/UIKit.h>
//#import <mach/mach.h>
#import "TXRTMPAPI.h"

// 清晰度定义
#define    HD_LEVEL_720P       1  // 1280 * 720
#define    HD_LEVEL_640        2  //  640 * 360
#define    HD_LEVEL_640_PLUS   3  //  640 * 360 且开启码率自适应


#define RTMP_PUBLISH_URL    @"请输入或扫二维码获取推流地址"  //调试期间您可以修改之以避免输入地址的麻烦
//#define RTMP_PUBLISH_URL  @"rtmp://2157.livepush.myqcloud.com/live/2157_6cfbca22ecad11e5b91fa4dcbef5e35a?bizid=2157"

@interface PublishController ()<UITextFieldDelegate, TXLivePushListener>

@end

@implementation PublishController
{
}

- (void)viewDidLoad {
    [super viewDidLoad];

    [self initUI];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onAppActive:) name:UIApplicationDidBecomeActiveNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onAppDeactive:) name:UIApplicationWillResignActiveNotification object:nil];

    _txLivePublisher = [[TXLivePush alloc] init];
    [_txLivePublisher setLogLevel:LOGLEVEL_DEBUG];
    TXLivePushConfig* _config = [[TXLivePushConfig alloc] init];
    [_txLivePublisher setConfig:_config];


}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma -
-(void) onAppActive:(UIApplication*)app
{
    if (_publish_switch == YES) {
        [self startRtmp];
    }
}

-(void) onAppDeactive:(UIApplication*)app
{
    if (_publish_switch == YES) {
        [self stopRtmp];
    }
}

#pragma -
- (void)clearLog {
    _tipsMsg = @"";
    _logMsg = @"";
    [_statusView setText:@""];
    [_logViewEvt setText:@""];
    _startTime = [[NSDate date]timeIntervalSince1970]*1000;
    _lastTime = _startTime;
}


-(BOOL)startRtmp{
    [self clearLog];
    NSString* rtmpUrl = self.txtRtmpUrl.text;
    if (rtmpUrl.length == 0) {
        rtmpUrl = RTMP_PUBLISH_URL;
    }

    if (!([rtmpUrl hasPrefix:@"http:"] || [rtmpUrl hasPrefix:@"rtmp:"] )) {
        [self toastTip:@"请输入正确的推流地址"];
        return NO;
    }

    //是否有摄像头权限
    AVAuthorizationStatus status = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
    if (status == AVAuthorizationStatusDenied) {
        [self toastTip:@"获取摄像头权限失败，请前往隐私-相机设置里面打开应用权限"];
        return NO;
    }

    NSArray* ver = [TXRtmpApi getSDKVersion];
    if ([ver count] >= 3) {
        _logMsg = [NSString stringWithFormat:@"rtmp sdk version: %@.%@.%@",ver[0],ver[1],ver[2]];
        [_logViewEvt setText:_logMsg];
    }

    if(_txLivePublisher != nil)
    {
        _txLivePublisher.delegate = self;
        [_txLivePublisher startPreview:self.view];
        [_txLivePublisher startPush:rtmpUrl];
    }
    return YES;
}


- (void)stopRtmp {
    if(_txLivePublisher != nil)
    {
        _txLivePublisher.delegate = nil;
        [_txLivePublisher stopPreview];
        [_txLivePublisher stopPush];

        _sdBeauty.value = 0;
        _sdWhitening.value = 0;
    }
}

// RTMP 推流事件通知
#pragma - TXLivePushListener
-(void) appendLog:(NSString*) evt time:(NSDate*) date mills:(int)mil
{
    NSDateFormatter* format = [[NSDateFormatter alloc] init];
    format.dateFormat = @"hh:mm:ss";
    NSString* time = [format stringFromDate:date];
    NSString* log = [NSString stringWithFormat:@"[%@.%-3.3d] %@", time, mil, evt];
    if (_logMsg == nil) {
        _logMsg = @"";
    }
    _logMsg = [NSString stringWithFormat:@"%@\n%@", _logMsg, log];
    [_logViewEvt setText:_logMsg];
}

-(void) onPushEvent:(int)EvtID WithParam:(NSDictionary*)param;
{
    NSDictionary* dict = param;

    dispatch_async(dispatch_get_main_queue(), ^{
        if (EvtID == PUSH_ERR_NET_DISCONNECT) {
            [self clickPublish:_btnPublish];
        }
//        NSLog(@"evt:%d,%@", EvtID, dict);
        long long time = [(NSNumber*)[dict valueForKey:EVT_TIME] longLongValue];
        int mil = time % 1000;
        NSDate* date = [NSDate dateWithTimeIntervalSince1970:time/1000];
        NSString* Msg = (NSString*)[dict valueForKey:EVT_MSG];
        [self appendLog:Msg time:date mills:mil];
    });
}

-(void) onNetStatus:(NSDictionary*) param
{
    NSDictionary* dict = param;

    dispatch_async(dispatch_get_main_queue(), ^{
        int netspeed  = [(NSNumber*)[dict valueForKey:NET_STATUS_NET_SPEED] intValue];
        int vbitrate  = [(NSNumber*)[dict valueForKey:NET_STATUS_VIDEO_BITRATE] intValue];
        int abitrate  = [(NSNumber*)[dict valueForKey:NET_STATUS_AUDIO_BITRATE] intValue];
        int cachesize = [(NSNumber*)[dict valueForKey:NET_STATUS_CACHE_SIZE] intValue];
        int dropsize  = [(NSNumber*)[dict valueForKey:NET_STATUS_DROP_SIZE] intValue];
        int jitter    = [(NSNumber*)[dict valueForKey:NET_STATUS_NET_JITTER] intValue];
        int fps       = [(NSNumber*)[dict valueForKey:NET_STATUS_VIDEO_FPS] intValue];
        int width     = [(NSNumber*)[dict valueForKey:NET_STATUS_VIDEO_WIDTH] intValue];
        int height    = [(NSNumber*)[dict valueForKey:NET_STATUS_VIDEO_HEIGHT] intValue];
        float cpu_usage = [(NSNumber*)[dict valueForKey:NET_STATUS_CPU_USAGE] floatValue];


        NSString* log = [NSString stringWithFormat:@"CPU:%.1f%%\tRES:%d*%d\tSPD:%dkb/s\nJITT:%d\tFPS:%d\tARA:%dkb/s\nQUE:%d\tDRP:%d\tVRA:%dkb/s",
                         cpu_usage*100,
                         width,
                         height,
                         netspeed,
                         jitter,
                         fps,
                         abitrate,
                         cachesize,
                         dropsize,
                         vbitrate];
        [_statusView setText:log];

    });
}


#pragma - ui util
-(void) initUI
{
    //主界面排版

    UIColor* bgColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"launchimage1@3x"]];
    [self.view setBackgroundColor:bgColor];

    CGSize size = [[UIScreen mainScreen] bounds].size;

    int icon_size = size.width / 10;

    _cover = [[UIView alloc]init];
    _cover.frame  = CGRectMake(10.0f, 55 + 2*icon_size, size.width - 20, size.height - 75 - 3 * icon_size);
    _cover.backgroundColor = [UIColor whiteColor];
    _cover.alpha  = 0.5;
    _cover.hidden = YES;
    [self.view addSubview:_cover];

    int logheadH = 50;
    _statusView = [[UITextView alloc] initWithFrame:CGRectMake(10.0f, 55 + 2*icon_size, size.width - 20,  logheadH)];
    _statusView.backgroundColor = [UIColor clearColor];
    _statusView.alpha = 1;
    _statusView.textColor = [UIColor blackColor];
    _statusView.editable = NO;
    _statusView.hidden = YES;
    [self.view addSubview:_statusView];

    _logViewEvt = [[UITextView alloc] initWithFrame:CGRectMake(10.0f, 55 + 2*icon_size + logheadH, size.width - 20, size.height - 75 - 3 * icon_size - logheadH)];
    _logViewEvt.backgroundColor = [UIColor clearColor];
    _logViewEvt.alpha = 1;
    _logViewEvt.textColor = [UIColor blackColor];
    _logViewEvt.editable = NO;
    _logViewEvt.hidden = YES;
    [self.view addSubview:_logViewEvt];


    NSArray *scArray = [[NSArray alloc] initWithObjects:@"推流",@"播放", nil];
    UISegmentedControl* scSwitch = [[UISegmentedControl alloc] initWithItems:scArray];
    scSwitch.frame = CGRectMake(75, 40, size.width-150, icon_size);
    scSwitch.selectedSegmentIndex = 0;
    scSwitch.tintColor = [UIColor blackColor];

    [scSwitch addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
    [self.view addSubview:scSwitch];
    [self.txtRtmpUrl setBorderStyle:UITextBorderStyleRoundedRect];

    self.txtRtmpUrl = [[UITextField alloc] initWithFrame:CGRectMake(10, 40 + icon_size + 10, size.width- 25 - icon_size, icon_size)];
    self.txtRtmpUrl.placeholder = RTMP_PUBLISH_URL;
    self.txtRtmpUrl.background = [UIImage imageNamed:@"Input_box"];
    self.txtRtmpUrl.alpha = 0.5;
    self.txtRtmpUrl.autocapitalizationType = UITextAutocorrectionTypeNo;
    self.txtRtmpUrl.delegate = self;

    [self.view addSubview:self.txtRtmpUrl];

    UIButton* btnScan = [UIButton buttonWithType:UIButtonTypeCustom];
    btnScan.frame = CGRectMake(size.width - 10 - icon_size , 40 + icon_size + 10, icon_size, icon_size);
    [btnScan setImage:[UIImage imageNamed:@"QR_code"] forState:UIControlStateNormal];
    [btnScan addTarget:self action:@selector(clickScan:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btnScan];

    int icon_gap = 3*icon_size/8;

    //start or stop 按钮
    _publish_switch = NO;
    _btnPublish = [UIButton buttonWithType:UIButtonTypeCustom];
    _btnPublish.frame = CGRectMake(icon_gap, size.height - icon_size - 10, icon_size, icon_size);
    [_btnPublish setImage:[UIImage imageNamed:@"start"] forState:UIControlStateNormal];
    [_btnPublish addTarget:self action:@selector(clickPublish:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btnPublish];


    //前置后置摄像头切换
    _camera_switch = NO;
    _btnCamera = [UIButton buttonWithType:UIButtonTypeCustom];
    _btnCamera.frame = CGRectMake(2*icon_gap + icon_size, size.height - 10 - icon_size, icon_size, icon_size);
    [_btnCamera setImage:[UIImage imageNamed:@"camera"] forState:UIControlStateNormal];
    [_btnCamera addTarget:self action:@selector(clickCamera:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btnCamera];

    //美颜开关按钮
    _beauty_level = 0;
    _btnBeauty = [UIButton buttonWithType:UIButtonTypeCustom];
    _btnBeauty.frame = CGRectMake(3*icon_gap + 2*icon_size, size.height - 10 - icon_size, icon_size, icon_size);
    [_btnBeauty setImage:[UIImage imageNamed:@"beauty"] forState:UIControlStateNormal];
    [_btnBeauty addTarget:self action:@selector(clickBeauty:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btnBeauty];

    //硬件加速
    _hardware_switch = NO;
    _btnHardware = [UIButton buttonWithType:UIButtonTypeCustom];
    _btnHardware.frame = CGRectMake(size.width - 3*icon_gap - 3*icon_size, size.height - 10 - icon_size, icon_size, icon_size);
    [_btnHardware setImage:[UIImage imageNamed:@"quick"] forState:UIControlStateNormal];
    [_btnHardware addTarget:self action:@selector(clickHardware:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btnHardware];

    //log显示或隐藏
    _log_switch = NO;
    _btnLog = [UIButton buttonWithType:UIButtonTypeCustom];
    _btnLog.frame = CGRectMake(size.width - 2*icon_gap - 2*icon_size, size.height - 10 - icon_size, icon_size, icon_size);
    [_btnLog setImage:[UIImage imageNamed:@"log"] forState:UIControlStateNormal];
    [_btnLog addTarget:self action:@selector(clickLog:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btnLog];

    //清晰度按钮
    _btnResolution = [UIButton buttonWithType:UIButtonTypeCustom];
    _btnResolution.frame = CGRectMake(size.width - icon_gap - icon_size, size.height - 10 - icon_size, icon_size, icon_size);
    [_btnResolution setImage:[UIImage imageNamed:@"SD"] forState:UIControlStateNormal];
    [_btnResolution addTarget:self action:@selector(clickHD:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btnResolution];

    //开启闪关灯按钮
    _torch_switch= NO;
    _btnTorch = [UIButton buttonWithType:UIButtonTypeCustom];
    _btnTorch.frame = CGRectMake(size.width - 4*icon_gap - 4*icon_size, size.height - 10 - icon_size, icon_size, icon_size);
    [_btnTorch setImage:[UIImage imageNamed:@"flash_off"] forState:UIControlStateNormal];
    [_btnTorch setImage:[UIImage imageNamed:@"flash_on"] forState:UIControlStateSelected];
    [_btnTorch addTarget:self action:@selector(clickTorch:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_btnTorch];

    //美颜拉杆浮层
    _vBeauty = [[UIControl  alloc] init];
    _vBeauty.frame = CGRectMake(0, size.height-120, size.width, 120);
    [_vBeauty setBackgroundColor:[UIColor whiteColor]];

    UILabel* txtBeauty = [[UILabel alloc]init];
    txtBeauty.frame = CGRectMake(20, 25, 150, 150);
    [txtBeauty setText:@"美颜效果"];
    [txtBeauty setFont:[UIFont fontWithName:@"" size:14]];
    [txtBeauty sizeToFit];

    _sdBeauty = [[UISlider alloc] init];
    _sdBeauty.frame = CGRectMake(txtBeauty.frame.origin.x + txtBeauty.frame.size.width + 10, 0, size.width - txtBeauty.frame.origin.x - txtBeauty.frame.size.width - 40, 60);
    _sdBeauty.minimumValue = 0;
    _sdBeauty.maximumValue = 9;
    _sdBeauty.value = 0;
    _sdBeauty.center = CGPointMake(_sdBeauty.center.x, txtBeauty.center.y);

    [_sdBeauty setThumbImage:[UIImage imageNamed:@"circle"] forState:UIControlStateNormal];
    [_sdBeauty setMinimumTrackTintColor:[UIColor blackColor]];
    [_sdBeauty setMaximumTrackTintColor:[UIColor blackColor]];
    [_sdBeauty addTarget:self action:@selector(sliderValueChange:) forControlEvents:UIControlEventValueChanged];
    _sdBeauty.tag = 0;

    UILabel* txtWhitening = [[UILabel alloc] init];
    txtWhitening.frame = CGRectMake(20, txtBeauty.frame.origin.y + txtBeauty.frame.size.height + 25, 150, 150);
    [txtWhitening setText:@"美白效果"];
    [txtWhitening setFont:[UIFont fontWithName:@"" size:14]];
    [txtWhitening sizeToFit];

    _sdWhitening = [[UISlider alloc] init];
    _sdWhitening.frame = CGRectMake(txtWhitening.frame.origin.x + txtWhitening.frame.size.width + 10, 0, size.width - txtWhitening.frame.origin.x - txtWhitening.frame.size.width - 40, 60);
    _sdWhitening.minimumValue = 0;
    _sdWhitening.maximumValue = 9;
    _sdWhitening.center = CGPointMake(_sdWhitening.center.x, txtWhitening.center.y);

    [_sdWhitening setThumbImage:[UIImage imageNamed:@"circle"] forState:UIControlStateNormal];
    [_sdWhitening setMinimumTrackTintColor:[UIColor blackColor]];
    [_sdWhitening setMaximumTrackTintColor:[UIColor blackColor]];
    [_sdWhitening addTarget:self action:@selector(sliderValueChange:) forControlEvents:UIControlEventValueChanged];
    _sdWhitening.tag = 1;


    [_vBeauty addSubview:txtBeauty];
    [_vBeauty addSubview:_sdBeauty];
    [_vBeauty addSubview:txtWhitening];
    [_vBeauty addSubview:_sdWhitening];

    _vBeauty.hidden = YES;
    [self.view addSubview: _vBeauty];

    // 清晰度选项: 720p - 640 - 640+ (此处使用了三个普通按钮来模拟单选框, 目的是跟android demo 保持界面风格一致)
    _vHD = [[UIControl alloc]init];
    _vHD.frame = CGRectMake(0, size.height-120, size.width, 120);
    [_vHD setBackgroundColor:[UIColor whiteColor]];

    UILabel* txtHD= [[UILabel alloc]init];
    txtHD.frame = CGRectMake(0, 0, size.width, 50);
    [txtHD setText:@"清晰度"];
    [txtHD setFont:[UIFont fontWithName:@"" size:14]];

    [_vHD addSubview:txtHD];

    int gap = 30;
    int width = (size.width - gap*2 - 20) / 3;
    _radioBtnHD = [UIButton buttonWithType:UIButtonTypeCustom];
    _radioBtnHD.frame = CGRectMake(10, 60, width, 40);
    [_radioBtnHD setTitle:@"720p" forState:UIControlStateNormal];
    [_radioBtnHD addTarget:self action:@selector(changeHD:) forControlEvents:UIControlEventTouchUpInside];

    _radioBtnSD = [UIButton buttonWithType:UIButtonTypeCustom];
    _radioBtnSD.frame = CGRectMake(10 + gap + width, 60, width, 40);
    [_radioBtnSD setTitle:@"640" forState:UIControlStateNormal];
    [_radioBtnSD addTarget:self action:@selector(changeHD:) forControlEvents:UIControlEventTouchUpInside];

    _radioBtnAUTO = [UIButton buttonWithType:UIButtonTypeCustom];
    _radioBtnAUTO.frame = CGRectMake(size.width - 10 - width, 60, width, 40);
    [_radioBtnAUTO setTitle:@"640+" forState:UIControlStateNormal];
    [_radioBtnAUTO addTarget:self action:@selector(changeHD:) forControlEvents:UIControlEventTouchUpInside];

    [_vHD addSubview:_radioBtnHD];
    [_vHD addSubview:_radioBtnSD];
    [_vHD addSubview:_radioBtnAUTO];

    _vHD.hidden = YES;
    [self.view addSubview: _vHD];

    // DEMO 默认采用 640 * 360 分辨率, 避免在4S等机型上出现编码不足
    _hd_level = [self isSuitableMachine] ? HD_LEVEL_720P : HD_LEVEL_640;
    [self setHDUI:_hd_level];

#if TARGET_IPHONE_SIMULATOR
    [self toastTip:@"iOS模拟器不支持推流和播放，请使用真机体验"];
#endif

}

-(void) setHDUI:(int) level
{
    switch (level) {
        case HD_LEVEL_720P:
            [_radioBtnHD setBackgroundImage:[UIImage imageNamed:@"black"] forState:UIControlStateNormal];
            [_radioBtnSD setBackgroundImage:[UIImage imageNamed:@"white"] forState:UIControlStateNormal];
            [_radioBtnAUTO setBackgroundImage:[UIImage imageNamed:@"white"] forState:UIControlStateNormal];
            [_radioBtnHD setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
            [_radioBtnSD setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
            [_radioBtnAUTO setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
            [_btnResolution setImage:[UIImage imageNamed:@"HD"] forState:UIControlStateNormal];
            break;
        case HD_LEVEL_640:
            [_radioBtnHD setBackgroundImage:[UIImage imageNamed:@"white"] forState:UIControlStateNormal];
            [_radioBtnSD setBackgroundImage:[UIImage imageNamed:@"black"] forState:UIControlStateNormal];
            [_radioBtnAUTO setBackgroundImage:[UIImage imageNamed:@"white"] forState:UIControlStateNormal];
            [_radioBtnHD setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
            [_radioBtnSD setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
            [_radioBtnAUTO setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
            [_btnResolution setImage:[UIImage imageNamed:@"SD"] forState:UIControlStateNormal];

            break;
        case HD_LEVEL_640_PLUS:
            [_radioBtnHD setBackgroundImage:[UIImage imageNamed:@"white"] forState:UIControlStateNormal];
            [_radioBtnSD setBackgroundImage:[UIImage imageNamed:@"white"] forState:UIControlStateNormal];
            [_radioBtnAUTO setBackgroundImage:[UIImage imageNamed:@"black"] forState:UIControlStateNormal];
            [_radioBtnHD setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
            [_radioBtnSD setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
            [_radioBtnAUTO setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
            [_btnResolution setImage:[UIImage imageNamed:@"PU"] forState:UIControlStateNormal];
        default:
            break;
    }
}

#pragma - 事件处理
- (void) segmentAction:(UISegmentedControl*) sc
{
    NSInteger idx = sc.selectedSegmentIndex;
    if (idx == 1) {
        PlayController *vc = [[PlayController alloc] init];
        [self.navigationController pushViewController:vc animated:YES];

        sc.selectedSegmentIndex = 0;
        [_btnPublish setImage:[UIImage imageNamed:@"start"] forState:UIControlStateNormal];
        _publish_switch = NO;
        [self stopRtmp];
    }
}

-(void) clickScan:(UIButton*) btn
{
    [_btnPublish setImage:[UIImage imageNamed:@"start"] forState:UIControlStateNormal];
    _publish_switch = NO;
    [self stopRtmp];
    ScanQRController* vc = [[ScanQRController alloc] init];
    vc.pvc = self;
    [self.navigationController pushViewController:vc animated:NO];
}

-(void) clickPublish:(UIButton*) btn
{
    if (_publish_switch == YES) {
        [self stopRtmp];
        [_btnPublish setImage:[UIImage imageNamed:@"start"] forState:UIControlStateNormal];
        _publish_switch = NO;
        [[UIApplication sharedApplication] setIdleTimerDisabled:NO];
    }
    else
    {
        if(![self startRtmp])
        {
            return;
        }
        [_btnPublish setImage:[UIImage imageNamed:@"suspend"] forState:UIControlStateNormal];
        _publish_switch = YES;
        [[UIApplication sharedApplication] setIdleTimerDisabled:YES];
    }
}


-(void) clickCamera:(UIButton*) btn
{
    _camera_switch = !_camera_switch;

    [btn setImage:[UIImage imageNamed:(_camera_switch? @"camera2" : @"camera")] forState:UIControlStateNormal];
    [_txLivePublisher switchCamera];
}

-(void) clickBeauty:(UIButton*) btn
{
    _sdBeauty.value = _beauty_level;
    _vBeauty.hidden = NO;
}

/**
 @method 获取指定宽度width的字符串在UITextView上的高度
 @param textView 待计算的UITextView
 @param Width 限制字符串显示区域的宽度
 @result float 返回的高度
 */
- (float) heightForString:(UITextView *)textView andWidth:(float)width{
    CGSize sizeToFit = [textView sizeThatFits:CGSizeMake(width, MAXFLOAT)];
    return sizeToFit.height;
}
- (void) toastTip:(NSString*)toastInfo
{
    CGRect frameRC = [[UIScreen mainScreen] bounds];
    frameRC.origin.y = frameRC.size.height - 110;
    frameRC.size.height -= 110;
    __block UITextView * toastView = [[UITextView alloc] init];

    toastView.editable = NO;
    toastView.selectable = NO;

    frameRC.size.height = [self heightForString:toastView andWidth:frameRC.size.width];

    toastView.frame = frameRC;

    toastView.text = toastInfo;
    toastView.backgroundColor = [UIColor whiteColor];
    toastView.alpha = 0.5;

    [self.view addSubview:toastView];

    dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, 2 * NSEC_PER_SEC);

    dispatch_after(popTime, dispatch_get_main_queue(), ^(){
        [toastView removeFromSuperview];
        toastView = nil;
    });
}

-(void) clickHardware:(UIButton*) btn
{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0) {
        [self toastTip:@"iOS 版本低于8.0，不支持硬件加速."];
        return;
    }

    if(_txLivePublisher != nil) {
        if (_publish_switch == YES) {
            [self stopRtmp];
        }

        TXLivePushConfig * configTmp = _txLivePublisher.config;
        if (configTmp.enableHWAcceleration == NO)
        {
            NSString* strTip = @"iOS SDK启用硬件加速.";
            if (_publish_switch == YES)
            {
                strTip = @"iOS SDK启用硬件加速，切换后会重新开始推流";
            }

            [self toastTip:strTip];
            configTmp.enableHWAcceleration = YES;
            [btn setImage:[UIImage imageNamed:@"quick"] forState:UIControlStateNormal];
        }
        else
        {
            NSString* strTip = @"iOS SDK停止硬件加速.";
            if (_publish_switch == YES)
            {
                strTip = @"iOS SDK停止硬件加速，切换后会重新开始推流";
            }

            [self toastTip:strTip];
            configTmp.enableHWAcceleration = NO;
            [btn setImage:[UIImage imageNamed:@"quick2"] forState:UIControlStateNormal];
        }
        _txLivePublisher.config = configTmp;

        if (_publish_switch == YES) {
            [self startRtmp];
        }
    }
}

-(void) clickLog:(UIButton*) btn
{
    if (_log_switch == YES)
    {
        _statusView.hidden = YES;
        _logViewEvt.hidden = YES;
        [btn setImage:[UIImage imageNamed:@"log"] forState:UIControlStateNormal];
        _cover.hidden = YES;
        _log_switch = NO;
    }
    else
    {
        _statusView.hidden = NO;
        _logViewEvt.hidden = NO;
        [btn setImage:[UIImage imageNamed:@"log2"] forState:UIControlStateNormal];
        _cover.hidden = NO;
        _log_switch = YES;
    }

}

-(void) clickTorch:(UIButton*) btn
{
    if (_txLivePublisher) {
        btn.selected = !btn.selected;
        _torch_switch = !_torch_switch;
//        if (![_txLivePublisher toggleTorch:_torch_switch]) {
//            _torch_switch = !_torch_switch;
//            [self toastTip:@"闪光灯启动失败"];
//        }
        AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];

        if (_torch_switch) {
            if ([device hasTorch]) {
                [device lockForConfiguration:nil];
                [device setTorchMode: AVCaptureTorchModeOn];
                [device unlockForConfiguration];
            }else {
                [self toastTip:@"闪光灯启动失败"];
            }
        }else {
            if ([device hasTorch]) {
                [device lockForConfiguration:nil];
                [device setTorchMode: AVCaptureTorchModeOff];
                [device unlockForConfiguration];
            }
        }
    }
}

-(void) clickHD:(UIButton*) btn
{
    _vHD.hidden = NO;
}


-(void) changeHD:(UIButton*) btn
{
    if ([btn.titleLabel.text isEqualToString:@"720p"] && NO == [self isSuitableMachine]) {
        UIAlertView * alert = [[UIAlertView alloc] initWithTitle: @"硬件加速"
                                                         message: @"iphone 6 及以上机型适合开启720p!"
                                                        delegate: nil
                                               cancelButtonTitle: @"确认"
                                               otherButtonTitles: nil];
        [alert show];
        return;
    }

    if (_txLivePublisher == nil) return;

    if (_publish_switch == YES) {
        [self stopRtmp];
    }

    if ([btn.titleLabel.text isEqualToString:@"720p"]) {
        _hd_level                 = HD_LEVEL_720P;

        TXLivePushConfig* _config = _txLivePublisher.config;
        _config.videoBitratePIN   = 1500;
        _config.videoResolution   = [self isSuitableMachine ] ? VIDEO_RESOLUTION_1280_720 : VIDEO_RESOLUTION_960_540;
        _config.enableAutoBitrate = NO;
        [_txLivePublisher setConfig:_config];

    } else if ([btn.titleLabel.text isEqualToString:@"640"]) {
        _hd_level                 = HD_LEVEL_640;

        TXLivePushConfig* _config = _txLivePublisher.config;
        _config.videoBitratePIN   = 800;
        _config.videoResolution   = VIDEO_RESOLUTION_640_360;
        _config.enableAutoBitrate = NO;
        [_txLivePublisher setConfig:_config];

    } else if ([btn.titleLabel.text isEqualToString:@"640+"]) {
        _hd_level                 = HD_LEVEL_640_PLUS;

        TXLivePushConfig* _config = _txLivePublisher.config;
        _config.videoBitrateMin   = 500;
        _config.videoBitrateMax   = 1500;
        _config.enableAutoBitrate = YES;
        _config.videoResolution   = VIDEO_RESOLUTION_640_360;
        [_txLivePublisher setConfig:_config]; // 此模式下设置bitrate无效
    }

    [self setHDUI:_hd_level];
    _vHD.hidden = YES;

    if (_publish_switch == YES) {
        [self startRtmp];
    }
}

-(void) sliderValueChange:(UISlider*) obj
{
    // todo
    if (obj.tag == 0) { //美颜
        _beauty_level = obj.value;
    } else if (obj.tag == 1) { //美白
        _whitening_level = obj.value;
    }

    [_txLivePublisher setBeautyFilterDepth:_beauty_level setWhiteningFilterDepth:_whitening_level];
}


// iphone 6 及以上机型适合开启720p, 否则20帧的帧率可能无法达到, 这种"流畅不足,清晰有余"的效果并不好
-(BOOL) isSuitableMachine
{
    int mib[2] = {CTL_HW, HW_MACHINE};
    size_t len = 0;
    char* machine;

    sysctl(mib, 2, NULL, &len, NULL, 0);

    machine = (char*)malloc(len);
    sysctl(mib, 2, machine, &len, NULL, 0);

    NSString* platform = [NSString stringWithCString:machine encoding:NSASCIIStringEncoding];
    free(machine);
    if ([platform length] > 6) {
        NSString * platNum = [NSString stringWithFormat:@"%C", [platform characterAtIndex: 6 ]];
        return ([platNum intValue] >= 7);
    } else {
        return NO;
    }

}


#pragma -- UITextFieldDelegate
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return YES;
}

- (void) touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
    [self.txtRtmpUrl resignFirstResponder];
    _vHD.hidden = YES;
    _vBeauty.hidden = YES;
}
@end