1. 下载库

git clone https://github.com/Bilibili/ijkplayer.git ijkplayer-ios

2. 进入文件夹

cd ijkplayer-ios

3. 切换分支

git checkout -B latest k0.8.8

4.运行ios初始化脚本

./init-ios.sh

5. 更改文件

打开项目ijkplayer-ios => iOS => IJKMediaPlayer

image.png

由于ijkplayer 第一次加载播放器时卡主线程, 是因为内部源码问题, 需要更改源文件

• 更改文件: IJKSDLGLView.m,
• 文件位置: ijkplayer-ios/ios/IJKMediaPlayer/IJKMediaPlayer/ijkmedia/ijksdl/iOS/IJKSDLGLView.m
• 更改后内容如下
  1. 首先，增加个只在主线程操作的方法，这个方法里面就是先判断当前是否在主线程，如果是就直接执行，否则同步切换到主队列进行执行。

static void IJKHanleInMainThread(dispatch_block_t mainThreadblock) {
    if ([NSThread currentThread] == [NSThread mainThread]){
        mainThreadblock();
    } else {
        dispatch_sync(dispatch_get_main_queue(), ^{
            mainThreadblock();
        });
    }
}

2. 其次将方法- (BOOL)isApplicationActive里面改成这样：

__block UIApplicationState appState = 0;
            IJKHanleInMainThread(^{
                appState = [UIApplication sharedApplication].applicationState;
            });

3. 将方法- (void)displayInternal: (SDL_VoutOverlay *) overlay里面改成这样

IJKHanleInMainThread(^{
        [[self eaglLayer] setContentsScale:_scaleFactor];
    });
IJKHanleInMainThread(^{
            [_context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer];
        });

完整源码放在文章最后

IJKAudioKit文件

• 文件位置: ijkplayer-ios/ios/IJKMediaPlayer/IJKMediaPlayer/IJKAudioKit.m
  返回值报错,将IJKAudioKit.h及IJKAudioKit.m中 setActive中的返回值Bool改为void

- (void)setActive:(BOOL)active;

6.去掉对armv7支持

由于apple现在不允许32位的应用上架AppStore了，弱化了对armv7的处理,执行 ./compile-ffmpeg.sh all会报错

修改compile-ffmpeg.sh 和 compile-openssl.sh 两个文件，去掉对armv7的支持

原来：

FF_ALL_ARCHS_IOS8_SDK="armv7 arm64 i386 x86_64"

现在：

FF_ALL_ARCHS_IOS8_SDK="arm64 i386 x86_64"

7.修改真机模拟器库无法合并问题

如果不修改, 打出包后, 会出现真机模拟器库无法合并，报错：have the same architectures (arm64) and can't be in the same fat output file
XCode12之前：
编译模拟器静态库支持i386 x86_64两架构
编译真机静态库支持armv7 arm64两架构
使用lipo -create -output命令可以将两个库合并成一个支持模拟器和真机i386 x86_64 armv7 arm64四种架构的胖子库。

XCode12编译的模拟器静态库也支持了arm64，导致出现真机库和模拟器库不能合并的问题。
设置Build Setting --> Excluded Architectures --> Debug --> 添加上 arm64

设置Build Setting --> Excluded Architectures --> Release --> 添加上 arm64

出现的原因是XCode12 编译的模拟器库新增支持架构arm64。

将模拟器的arm64给排除出去即可。

image.png

8.添加https 支持

最后会生成支持 https 的静态文件 libcrypto.a 和 libssl.a,

• 获取 openssl 并初始化

./init-ios-openssl.sh

cd iOS

• 在模块文件中添加一行配置 以启用 openssl 组件

echo 'export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-openssl"' >> ../config/module.sh

编译

# 清除操作
./compile-openssl.sh clean
./compile-ffmpeg.sh clean
# 编译openssl，生成 `libcrypto.a` 和 `libssl.a`，如果不需要https可以跳过这一步
./compile-openssl.sh all
# 编译ffmpeg
./compile-ffmpeg.sh all

10. 打包framework

大家会发现除了 IJKMediaFramework 这个 target, 还有一个叫 IJKMediaFrameworkWithSSL, 但是不推荐使用这个, 因为大部分基于 ijkplayer 的第三方框架都是使用的前者, 你把后者导入项目还是会报找不到包的错误, 就算你要支持 https 也推荐使用前者, 然后按照上一步添加 openssl 即可支持

• 设置工程的 scheme, 选择eidt scheme如图

  
  
  image.png

• 编辑build configuration为release

  
  
  image.png

• 设置好 scheme 后, 分别选择真机和模拟器进行编译(其实就是run)

12. 查看编译后的包

正常情况下查看如下
选中products => IJKMedisFramework => show in finder

image.png

查看真机与模拟器的

image.png

Xcode13 后 Products 目录可能显示不出来, 显示方法

首先打开项目，然后进入到你的项目目录并打开project.pbxproj文件

1、show in Finder 找到项目在电脑上的位置
2、右键点击xxx.xcodeproj -> 选择显示包内容
3、右键点击project.pbxproj -> 选择Xcode等工具打开文件

搜索productRefGroup 关键字
搜索结果可能有多个，每个项目的键值不一样具体看自己的项目。
注意看productRefGroup的注释 为/* Products */ 才是我们要修改的

mainGroup = ACA41EDA27868EE700DFCFA8;
productRefGroup = ACA41EE427868EE700DFCFA8 /* Products */;

将上面 mainGroup 对应的值复制给 productRefGroup的值，如下：

mainGroup = ACA41EDA27868EE700DFCFA8;
productRefGroup = ACA41EDA27868EE700DFCFA8 /* Products */;

保存 project.pbxproj文件，Xcode将自动刷新，这时候你想见的 Products 目录就出现了。

11. 合并IJKMediaFramework

命令

 lipo -create 真机framework路径 模拟器framework路径 -output 合并的文件路径

例如

lipo -create Release-iphoneos/IJKMediaFramework.framework/IJKMediaFramework Release-iphonesimulator/IJKMediaFramework.framework/IJKMediaFramework -output IJKMediaFramework

注意: lipo -create "真机版本路径" "模拟器版本路径" -output "合并后的文件路径" 合并后的路径你需要给出名字IJKMediaFramework, 不然会合并失败 , 一定要带名字

将生成后的IJKMediaFramework直接替换掉Release-iphoneos中的IJKMediaFramework就行

image.png

替换后这个就是需要的framework

image.png

12. 使用

将上面的包拖入项目即可使用

参考文章:
//www.greatytc.com/p/6ec0ec0244e2
https://github.com/zdhgithub/ijkplayer123/blob/master/IJKSDLGLView_mainThread.m
https://github.com/Zhangyanshen/ijkplayer-ios-demo#
//www.greatytc.com/p/59aff611dacd
https://zhuanlan.zhihu.com/p/444825777
https://blog.csdn.net/lrbtony/article/details/123382820
//www.greatytc.com/p/3b9187b91607

代码. IJKSDLGLView.m

/*
 * IJKSDLGLView.m
 *
 * Copyright (c) 2013 Bilibili
 * Copyright (c) 2013 Zhang Rui <bbcallen@gmail.com>
 *
 * based on https://github.com/kolyvan/kxmovie
 *
 * This file is part of ijkPlayer.
 *
 * ijkPlayer is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * ijkPlayer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with ijkPlayer; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#import "IJKSDLGLView.h"
#include "ijksdl/ijksdl_timer.h"
#include "ijksdl/iOS/ijksdl_ios.h"
#include "ijksdl/ijksdl_gles2.h"

typedef NS_ENUM(NSInteger, IJKSDLGLViewApplicationState) {
    IJKSDLGLViewApplicationUnknownState = 0,
    IJKSDLGLViewApplicationForegroundState = 1,
    IJKSDLGLViewApplicationBackgroundState = 2
};

@interface IJKSDLGLView()
@property(atomic,strong) NSRecursiveLock *glActiveLock;
@property(atomic) BOOL glActivePaused;
@end

@implementation IJKSDLGLView {
    EAGLContext     *_context;
    GLuint          _framebuffer;
    GLuint          _renderbuffer;
    GLint           _backingWidth;
    GLint           _backingHeight;

    int             _frameCount;
    
    int64_t         _lastFrameTime;

    IJK_GLES2_Renderer *_renderer;
    int                 _rendererGravity;

    BOOL            _isRenderBufferInvalidated;

    int             _tryLockErrorCount;
    BOOL            _didSetupGL;
    BOOL            _didStopGL;
    BOOL            _didLockedDueToMovedToWindow;
    BOOL            _shouldLockWhileBeingMovedToWindow;
    NSMutableArray *_registeredNotifications;

    IJKSDLGLViewApplicationState _applicationState;
}

@synthesize isThirdGLView              = _isThirdGLView;
@synthesize scaleFactor                = _scaleFactor;
@synthesize fps                        = _fps;

#warning change add  https://blog.csdn.net/mlcldh/article/details/101155942?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2~all~first_rank_v2~rank_v25-4-101155942.nonecase&utm_term=ijkplayer%20%E4%B8%BB%E7%BA%BF%E7%A8%8B%E9%97%AE%E9%A2%98
static void IJKHanleInMainThread(dispatch_block_t mainThreadblock) {
    if ([NSThread currentThread] == [NSThread mainThread]){
        mainThreadblock();
    } else {
        dispatch_sync(dispatch_get_main_queue(), ^{
            mainThreadblock();
        });
    }
}

+ (Class) layerClass
{
    return [CAEAGLLayer class];
}

- (id) initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        _tryLockErrorCount = 0;
        _shouldLockWhileBeingMovedToWindow = YES;
        self.glActiveLock = [[NSRecursiveLock alloc] init];
        _registeredNotifications = [[NSMutableArray alloc] init];
        [self registerApplicationObservers];

        _didSetupGL = NO;
        if ([self isApplicationActive] == YES)
            [self setupGLOnce];
    }

    return self;
}

- (void)willMoveToWindow:(UIWindow *)newWindow
{
    if (!_shouldLockWhileBeingMovedToWindow) {
        [super willMoveToWindow:newWindow];
        return;
    }
    if (newWindow && !_didLockedDueToMovedToWindow) {
        [self lockGLActive];
        _didLockedDueToMovedToWindow = YES;
    }
    [super willMoveToWindow:newWindow];
}

- (void)didMoveToWindow
{
    [super didMoveToWindow];
    if (self.window && _didLockedDueToMovedToWindow) {
        [self unlockGLActive];
        _didLockedDueToMovedToWindow = NO;
    }
}

- (BOOL)setupEAGLContext:(EAGLContext *)context
{
    glGenFramebuffers(1, &_framebuffer);
    glGenRenderbuffers(1, &_renderbuffer);
    glBindFramebuffer(GL_FRAMEBUFFER, _framebuffer);
    glBindRenderbuffer(GL_RENDERBUFFER, _renderbuffer);
    [_context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer];
    glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &_backingWidth);
    glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &_backingHeight);
    glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, _renderbuffer);

    GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
    if (status != GL_FRAMEBUFFER_COMPLETE) {
        NSLog(@"failed to make complete framebuffer object %x\n", status);
        return NO;
    }

    GLenum glError = glGetError();
    if (GL_NO_ERROR != glError) {
        NSLog(@"failed to setup GL %x\n", glError);
        return NO;
    }

    return YES;
}

- (CAEAGLLayer *)eaglLayer
{
    return (CAEAGLLayer*) self.layer;
}

- (BOOL)setupGL
{
    if (_didSetupGL)
        return YES;

    CAEAGLLayer *eaglLayer = (CAEAGLLayer*) self.layer;
    eaglLayer.opaque = YES;
    eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
                                    [NSNumber numberWithBool:NO], kEAGLDrawablePropertyRetainedBacking,
                                    kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat,
                                    nil];

    _scaleFactor = [[UIScreen mainScreen] scale];
    if (_scaleFactor < 0.1f)
        _scaleFactor = 1.0f;

    [eaglLayer setContentsScale:_scaleFactor];

    _context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
    if (_context == nil) {
        NSLog(@"failed to setup EAGLContext\n");
        return NO;
    }

    EAGLContext *prevContext = [EAGLContext currentContext];
    [EAGLContext setCurrentContext:_context];

    _didSetupGL = NO;
    if ([self setupEAGLContext:_context]) {
        NSLog(@"OK setup GL\n");
        _didSetupGL = YES;
    }

    [EAGLContext setCurrentContext:prevContext];
    return _didSetupGL;
}

- (BOOL)setupGLOnce
{
    if (_didSetupGL)
        return YES;

    if (![self tryLockGLActive])
        return NO;

    BOOL didSetupGL = [self setupGL];
    [self unlockGLActive];
    return didSetupGL;
}

- (BOOL)isApplicationActive {
    
    switch (_applicationState) {
        case IJKSDLGLViewApplicationForegroundState:
            return YES;
        case IJKSDLGLViewApplicationBackgroundState:
            return NO;
        default: {
            #warning change
            __block UIApplicationState appState = 0;
            IJKHanleInMainThread(^{
                appState = [UIApplication sharedApplication].applicationState;
            });
//            UIApplicationState appState = [UIApplication sharedApplication].applicationState;
            switch (appState) {
                case UIApplicationStateActive:
                    return YES;
                case UIApplicationStateInactive:
                case UIApplicationStateBackground:
                default:
                    return NO;
            }
        }
    }
}

- (void)dealloc
{
    [self lockGLActive];

    _didStopGL = YES;

    EAGLContext *prevContext = [EAGLContext currentContext];
    [EAGLContext setCurrentContext:_context];
    
    IJK_GLES2_Renderer_reset(_renderer);
    IJK_GLES2_Renderer_freeP(&_renderer);

    if (_framebuffer) {
        glDeleteFramebuffers(1, &_framebuffer);
        _framebuffer = 0;
    }

    if (_renderbuffer) {
        glDeleteRenderbuffers(1, &_renderbuffer);
        _renderbuffer = 0;
    }

    glFinish();

    [EAGLContext setCurrentContext:prevContext];

    _context = nil;

    [self unregisterApplicationObservers];

    [self unlockGLActive];
}

- (void)setScaleFactor:(CGFloat)scaleFactor
{
    _scaleFactor = scaleFactor;
    [self invalidateRenderBuffer];
}

- (void)layoutSubviews
{
    [super layoutSubviews];
    if (self.window.screen != nil) {
        _scaleFactor = self.window.screen.scale;
    }
    [self invalidateRenderBuffer];
}

- (void)setContentMode:(UIViewContentMode)contentMode
{
    [super setContentMode:contentMode];

    switch (contentMode) {
        case UIViewContentModeScaleToFill:
            _rendererGravity = IJK_GLES2_GRAVITY_RESIZE;
            break;
        case UIViewContentModeScaleAspectFit:
            _rendererGravity = IJK_GLES2_GRAVITY_RESIZE_ASPECT;
            break;
        case UIViewContentModeScaleAspectFill:
            _rendererGravity = IJK_GLES2_GRAVITY_RESIZE_ASPECT_FILL;
            break;
        default:
            _rendererGravity = IJK_GLES2_GRAVITY_RESIZE_ASPECT;
            break;
    }
    [self invalidateRenderBuffer];
}

- (BOOL)setupRenderer: (SDL_VoutOverlay *) overlay
{
    if (overlay == nil)
        return _renderer != nil;

    if (!IJK_GLES2_Renderer_isValid(_renderer) ||
        !IJK_GLES2_Renderer_isFormat(_renderer, overlay->format)) {

        IJK_GLES2_Renderer_reset(_renderer);
        IJK_GLES2_Renderer_freeP(&_renderer);

        _renderer = IJK_GLES2_Renderer_create(overlay);
        if (!IJK_GLES2_Renderer_isValid(_renderer))
            return NO;

        if (!IJK_GLES2_Renderer_use(_renderer))
            return NO;

        IJK_GLES2_Renderer_setGravity(_renderer, _rendererGravity, _backingWidth, _backingHeight);
    }

    return YES;
}

- (void)invalidateRenderBuffer
{
    NSLog(@"invalidateRenderBuffer\n");
    [self lockGLActive];

    _isRenderBufferInvalidated = YES;

    if ([[NSThread currentThread] isMainThread]) {
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^{
            if (_isRenderBufferInvalidated)
                [self display:nil];
        });
    } else {
        [self display:nil];
    }

    [self unlockGLActive];
}

- (void) display_pixels: (IJKOverlay *) overlay {
    return;
}

- (void)display: (SDL_VoutOverlay *) overlay
{
    if (_didSetupGL == NO)
        return;

    if ([self isApplicationActive] == NO)
        return;

    if (![self tryLockGLActive]) {
        if (0 == (_tryLockErrorCount % 100)) {
            NSLog(@"IJKSDLGLView:display: unable to tryLock GL active: %d\n", _tryLockErrorCount);
        }
        _tryLockErrorCount++;
        return;
    }

    _tryLockErrorCount = 0;
    if (_context && !_didStopGL) {
        EAGLContext *prevContext = [EAGLContext currentContext];
        [EAGLContext setCurrentContext:_context];
        [self displayInternal:overlay];
        [EAGLContext setCurrentContext:prevContext];
    }

    [self unlockGLActive];
}

// NOTE: overlay could be NULl
- (void)displayInternal: (SDL_VoutOverlay *) overlay
{
    if (![self setupRenderer:overlay]) {
        if (!overlay && !_renderer) {
            NSLog(@"IJKSDLGLView: setupDisplay not ready\n");
        } else {
            NSLog(@"IJKSDLGLView: setupDisplay failed\n");
        }
        return;
    }

#warning change
    IJKHanleInMainThread(^{
        [[self eaglLayer] setContentsScale:_scaleFactor];
    });
//    [[self eaglLayer] setContentsScale:_scaleFactor];
    

    if (_isRenderBufferInvalidated) {
        NSLog(@"IJKSDLGLView: renderbufferStorage fromDrawable\n");
        _isRenderBufferInvalidated = NO;

        glBindRenderbuffer(GL_RENDERBUFFER, _renderbuffer);
        #warning change
        IJKHanleInMainThread(^{
            [_context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer];
        });
//        [_context renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer];
        glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &_backingWidth);
        glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &_backingHeight);
        IJK_GLES2_Renderer_setGravity(_renderer, _rendererGravity, _backingWidth, _backingHeight);
    }

    glBindFramebuffer(GL_FRAMEBUFFER, _framebuffer);
    glViewport(0, 0, _backingWidth, _backingHeight);

    if (!IJK_GLES2_Renderer_renderOverlay(_renderer, overlay))
        ALOGE("[EGL] IJK_GLES2_render failed\n");

    glBindRenderbuffer(GL_RENDERBUFFER, _renderbuffer);
    [_context presentRenderbuffer:GL_RENDERBUFFER];

    int64_t current = (int64_t)SDL_GetTickHR();
    int64_t delta   = (current > _lastFrameTime) ? current - _lastFrameTime : 0;
    if (delta <= 0) {
        _lastFrameTime = current;
    } else if (delta >= 1000) {
        _fps = ((CGFloat)_frameCount) * 1000 / delta;
        _frameCount = 0;
        _lastFrameTime = current;
    } else {
        _frameCount++;
    }
}

#pragma mark AppDelegate

- (void) lockGLActive
{
    [self.glActiveLock lock];
}

- (void) unlockGLActive
{
    [self.glActiveLock unlock];
}

- (BOOL) tryLockGLActive
{
    if (![self.glActiveLock tryLock])
        return NO;

    /*-
    if ([UIApplication sharedApplication].applicationState != UIApplicationStateActive &&
        [UIApplication sharedApplication].applicationState != UIApplicationStateInactive) {
        [self.appLock unlock];
        return NO;
    }
     */

    if (self.glActivePaused) {
        [self.glActiveLock unlock];
        return NO;
    }
    
    return YES;
}

- (void)toggleGLPaused:(BOOL)paused
{
    [self lockGLActive];
    if (!self.glActivePaused && paused) {
        if (_context != nil) {
            EAGLContext *prevContext = [EAGLContext currentContext];
            [EAGLContext setCurrentContext:_context];
            glFinish();
            [EAGLContext setCurrentContext:prevContext];
        }
    }
    self.glActivePaused = paused;
    [self unlockGLActive];
}

- (void)registerApplicationObservers
{

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationWillEnterForeground)
                                                 name:UIApplicationWillEnterForegroundNotification
                                               object:nil];
    [_registeredNotifications addObject:UIApplicationWillEnterForegroundNotification];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationDidBecomeActive)
                                                 name:UIApplicationDidBecomeActiveNotification
                                               object:nil];
    [_registeredNotifications addObject:UIApplicationDidBecomeActiveNotification];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationWillResignActive)
                                                 name:UIApplicationWillResignActiveNotification
                                               object:nil];
    [_registeredNotifications addObject:UIApplicationWillResignActiveNotification];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationDidEnterBackground)
                                                 name:UIApplicationDidEnterBackgroundNotification
                                               object:nil];
    [_registeredNotifications addObject:UIApplicationDidEnterBackgroundNotification];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationWillTerminate)
                                                 name:UIApplicationWillTerminateNotification
                                               object:nil];
    [_registeredNotifications addObject:UIApplicationWillTerminateNotification];
}

- (void)unregisterApplicationObservers
{
    for (NSString *name in _registeredNotifications) {
        [[NSNotificationCenter defaultCenter] removeObserver:self
                                                        name:name
                                                      object:nil];
    }
}

- (void)applicationWillEnterForeground
{
    NSLog(@"IJKSDLGLView:applicationWillEnterForeground: %d", (int)[UIApplication sharedApplication].applicationState);
    [self setupGLOnce];
    _applicationState = IJKSDLGLViewApplicationForegroundState;
    [self toggleGLPaused:NO];
}

- (void)applicationDidBecomeActive
{
    NSLog(@"IJKSDLGLView:applicationDidBecomeActive: %d", (int)[UIApplication sharedApplication].applicationState);
    [self setupGLOnce];
    [self toggleGLPaused:NO];
}

- (void)applicationWillResignActive
{
    NSLog(@"IJKSDLGLView:applicationWillResignActive: %d", (int)[UIApplication sharedApplication].applicationState);
    [self toggleGLPaused:YES];
    glFinish();
}

- (void)applicationDidEnterBackground
{
    NSLog(@"IJKSDLGLView:applicationDidEnterBackground: %d", (int)[UIApplication sharedApplication].applicationState);
    _applicationState = IJKSDLGLViewApplicationBackgroundState;
    [self toggleGLPaused:YES];
    glFinish();
}

- (void)applicationWillTerminate
{
    NSLog(@"IJKSDLGLView:applicationWillTerminate: %d", (int)[UIApplication sharedApplication].applicationState);
    [self toggleGLPaused:YES];
}

#pragma mark snapshot

- (UIImage*)snapshot
{
    [self lockGLActive];

    UIImage *image = [self snapshotInternal];

    [self unlockGLActive];

    return image;
}

- (UIImage*)snapshotInternal
{
    if (isIOS7OrLater()) {
        return [self snapshotInternalOnIOS7AndLater];
    } else {
        return [self snapshotInternalOnIOS6AndBefore];
    }
}

- (UIImage*)snapshotInternalOnIOS7AndLater
{
    if (CGSizeEqualToSize(self.bounds.size, CGSizeZero)) {
        return nil;
    }
    UIGraphicsBeginImageContextWithOptions(self.bounds.size, NO, 0.0);
    // Render our snapshot into the image context
    [self drawViewHierarchyInRect:self.bounds afterScreenUpdates:NO];

    // Grab the image from the context
    UIImage *complexViewImage = UIGraphicsGetImageFromCurrentImageContext();
    // Finish using the context
    UIGraphicsEndImageContext();

    return complexViewImage;
}

- (UIImage*)snapshotInternalOnIOS6AndBefore
{
    EAGLContext *prevContext = [EAGLContext currentContext];
    [EAGLContext setCurrentContext:_context];

    GLint backingWidth, backingHeight;

    // Bind the color renderbuffer used to render the OpenGL ES view
    // If your application only creates a single color renderbuffer which is already bound at this point,
    // this call is redundant, but it is needed if you're dealing with multiple renderbuffers.
    // Note, replace "viewRenderbuffer" with the actual name of the renderbuffer object defined in your class.
    glBindRenderbuffer(GL_RENDERBUFFER, _renderbuffer);

    // Get the size of the backing CAEAGLLayer
    glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &backingWidth);
    glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &backingHeight);

    NSInteger x = 0, y = 0, width = backingWidth, height = backingHeight;
    NSInteger dataLength = width * height * 4;
    GLubyte *data = (GLubyte*)malloc(dataLength * sizeof(GLubyte));

    // Read pixel data from the framebuffer
    glPixelStorei(GL_PACK_ALIGNMENT, 4);
    glReadPixels((int)x, (int)y, (int)width, (int)height, GL_RGBA, GL_UNSIGNED_BYTE, data);

    // Create a CGImage with the pixel data
    // If your OpenGL ES content is opaque, use kCGImageAlphaNoneSkipLast to ignore the alpha channel
    // otherwise, use kCGImageAlphaPremultipliedLast
    CGDataProviderRef ref = CGDataProviderCreateWithData(NULL, data, dataLength, NULL);
    CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB();
    CGImageRef iref = CGImageCreate(width, height, 8, 32, width * 4, colorspace, kCGBitmapByteOrder32Big | kCGImageAlphaPremultipliedLast,
                                    ref, NULL, true, kCGRenderingIntentDefault);

    [EAGLContext setCurrentContext:prevContext];

    // OpenGL ES measures data in PIXELS
    // Create a graphics context with the target size measured in POINTS
    UIGraphicsBeginImageContext(CGSizeMake(width, height));

    CGContextRef cgcontext = UIGraphicsGetCurrentContext();
    // UIKit coordinate system is upside down to GL/Quartz coordinate system
    // Flip the CGImage by rendering it to the flipped bitmap context
    // The size of the destination area is measured in POINTS
    CGContextSetBlendMode(cgcontext, kCGBlendModeCopy);
    CGContextDrawImage(cgcontext, CGRectMake(0.0, 0.0, width, height), iref);

    // Retrieve the UIImage from the current context
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    // Clean up
    free(data);
    CFRelease(ref);
    CFRelease(colorspace);
    CGImageRelease(iref);

    return image;
}

- (void)setShouldLockWhileBeingMovedToWindow:(BOOL)shouldLockWhileBeingMovedToWindow
{
    _shouldLockWhileBeingMovedToWindow = shouldLockWhileBeingMovedToWindow;
}
@end

打包是出现真机无法打包, 模拟器可以打, 是因为我把arm64写错了

image.png