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基于 GPUImage 实现的简单相机。

License: MIT License

Ruby 0.04% Objective-C 76.93% C 9.75% Objective-C++ 11.73% GLSL 1.23% Metal 0.32%

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关于架构问题

一直在关注这个项目，有个问题，你通过分类的形式对UIViewController进行瘦身，这种方式很新颖，能否谈谈你的理解呢？微信:fengpingguohaha

你好, 就是对于 GPUImage 的使用有些疑问, 现在我想获取到已经经过滤镜处理过的视频帧, 通过获取到滤镜链的最后一个滤镜, 然后执行-setFrameProcessingCompletionBlock 通过获取 output. framebufferForOutput 但是偶尔获取到的第一帧是没有经过处理的, 有时又是经过处理的, 还有时获取视频帧的时候当中有几帧是没有经过处理的, 请问有没有什么方法避免这种情况, 或者是我掉了什么代码. 最后就是希望能实现通过-setFrameProcessingCompletionBlock 获取到的都是处理的视频帧.
谢谢.

无法切换后置摄像头

你好，这个项目一切换后置摄像头就卡住了
iPhone Xr, iOS 15.5

感谢作者开源对我帮助很大Thanks

我刚刚接触音视频相机类的开发，有什么书籍或者资料推荐吗？谢谢。如果代码能多些注释就更好了

UI API called on a background thread

iOS13 iphone7 运行报这个warning

Main Thread Checker: UI API called on a background thread: -[UIView bounds]
PID: 11292, TID: 2714676, Thread name: (none), Queue name: com.sunsetlakesoftware.GPUImage.openGLESContextQueue, QoS: 0
Backtrace:
4 SimpleCam 0x0000000102e9a1d4 __39-[GPUImageView recalculateViewGeometry]_block_invoke + 56
5 SimpleCam 0x0000000102e738c8 runSynchronouslyOnVideoProcessingQueue + 104
6 SimpleCam 0x0000000102e9a17c -[GPUImageView recalculateViewGeometry] + 108
7 SimpleCam 0x0000000102e9ab78 __37-[GPUImageView setInputSize:atIndex:]_block_invoke + 312
8 SimpleCam 0x0000000102e738c8 runSynchronouslyOnVideoProcessingQueue + 104
9 SimpleCam 0x0000000102e9aa20 -[GPUImageView setInputSize:atIndex:] + 136
10 SimpleCam 0x0000000102e4cd5c -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 748
11 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
12 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
13 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
14 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
15 SimpleCam 0x0000000102e48a70 -[GPUImageCropFilter newFrameReadyAtTime:atIndex:] + 152
16 SimpleCam 0x0000000102e96590 -[GPUImageVideoCamera updateTargetsForVideoCameraUsingCacheTextureAtWidth:height:time:] + 1716
17 SimpleCam 0x0000000102e96e9c -[GPUImageVideoCamera processVideoSampleBuffer:] + 2124
18 SimpleCam 0x0000000102e97a58 __74-[GPUImageVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:]_block_invoke + 176
19 libdispatch.dylib 0x0000000103c217fc _dispatch_call_block_and_release + 24
20 libdispatch.dylib 0x0000000103c22bd8 _dispatch_client_callout + 16
21 libdispatch.dylib 0x0000000103c29b48 _dispatch_lane_serial_drain + 744
22 libdispatch.dylib 0x0000000103c2a6e4 _dispatch_lane_invoke + 448
23 libdispatch.dylib 0x0000000103c35adc _dispatch_workloop_worker_thread + 1324
24 libsystem_pthread.dylib 0x00000001b4d4af88 _pthread_wqthread + 276
25 libsystem_pthread.dylib 0x00000001b4d4dad4 start_wqthread + 8
2020-01-07 15:04:15.420197+0800 SimpleCam[11292:2714676] [reports] Main Thread Checker: UI API called on a background thread: -[UIView bounds]
PID: 11292, TID: 2714676, Thread name: (none), Queue name: com.sunsetlakesoftware.GPUImage.openGLESContextQueue, QoS: 0
Backtrace:
4 SimpleCam 0x0000000102e9a1d4 __39-[GPUImageView recalculateViewGeometry]_block_invoke + 56
5 SimpleCam 0x0000000102e738c8 runSynchronouslyOnVideoProcessingQueue + 104
6 SimpleCam 0x0000000102e9a17c -[GPUImageView recalculateViewGeometry] + 108
7 SimpleCam 0x0000000102e9ab78 __37-[GPUImageView setInputSize:atIndex:]_block_invoke + 312
8 SimpleCam 0x0000000102e738c8 runSynchronouslyOnVideoProcessingQueue + 104
9 SimpleCam 0x0000000102e9aa20 -[GPUImageView setInputSize:atIndex:] + 136
10 SimpleCam 0x0000000102e4cd5c -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 748
11 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
12 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
13 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
14 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
15 SimpleCam 0x0000000102e48a70 -[GPUImageCropFilter newFrameReadyAtTime:atIndex:] + 152
16 SimpleCam 0x0000000102e96590 -[GPUImageVideoCamera updateTargetsForVideoCameraUsingCacheTextureAtWidth:height:time:] + 1716
17 SimpleCam 0x0000000102e96e9c -[GPUImageVideoCamera processVideoSampleBuffer:] + 2124
18 SimpleCam 0x0000000102e97a58 __74-[GPUImageVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:]_block_invoke + 176
19 libdispatch.dylib 0x0000000103c217fc _dispatch_call_block_and_release + 24
20 libdispatch.dylib 0x0000000103c22bd8 _dispatch_client_callout + 16
21 libdispatch.dylib 0x0000000103c29b48 _dispatch_lane_serial_drain + 744
22 libdispatch.dylib 0x0000000103c2a6e4 _dispatch_lane_invoke + 448
23 libdispatch.dylib 0x0000000103c35adc _dispatch_workloop_worker_thread + 1324
24 libsystem_pthread.dylib 0x00000001b4d4af88 _pthread_wqthread + 276
25 libsystem_pthread.dylib 0x00000001b4d4dad4 start_wqthread + 8

Main Thread Checker: UI API called on a background thread: -[UIView layer]
PID: 11292, TID: 2714676, Thread name: (none), Queue name: com.sunsetlakesoftware.GPUImage.openGLESContextQueue, QoS: 0
Backtrace:
4 SimpleCam 0x0000000102e99bf0 -[GPUImageView createDisplayFramebuffer] + 288
5 SimpleCam 0x0000000102e9a018 -[GPUImageView setDisplayFramebuffer] + 72
6 SimpleCam 0x0000000102e9a664 __44-[GPUImageView newFrameReadyAtTime:atIndex:]_block_invoke + 112
7 SimpleCam 0x0000000102e738c8 runSynchronouslyOnVideoProcessingQueue + 104
8 SimpleCam 0x0000000102e9a5d4 -[GPUImageView newFrameReadyAtTime:atIndex:] + 116
9 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
10 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
11 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
12 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
13 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
14 SimpleCam 0x0000000102e48a70 -[GPUImageCropFilter newFrameReadyAtTime:atIndex:] + 152
15 SimpleCam 0x0000000102e96590 -[GPUImageVideoCamera updateTargetsForVideoCameraUsingCacheTextureAtWidth:height:time:] + 1716
16 SimpleCam 0x0000000102e96e9c -[GPUImageVideoCamera processVideoSampleBuffer:] + 2124
17 SimpleCam 0x0000000102e97a58 __74-[GPUImageVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:]_block_invoke + 176
18 libdispatch.dylib 0x0000000103c217fc _dispatch_call_block_and_release + 24
19 libdispatch.dylib 0x0000000103c22bd8 _dispatch_client_callout + 16
20 libdispatch.dylib 0x0000000103c29b48 _dispatch_lane_serial_drain + 744
21 libdispatch.dylib 0x0000000103c2a6e4 _dispatch_lane_invoke + 448
22 libdispatch.dylib 0x0000000103c35adc _dispatch_workloop_worker_thread + 1324
23 libsystem_pthread.dylib 0x00000001b4d4af88 _pthread_wqthread + 276
24 libsystem_pthread.dylib 0x00000001b4d4dad4 start_wqthread + 8
2020-01-07 15:04:26.491685+0800 SimpleCam[11292:2714676] [reports] Main Thread Checker: UI API called on a background thread: -[UIView layer]
PID: 11292, TID: 2714676, Thread name: (none), Queue name: com.sunsetlakesoftware.GPUImage.openGLESContextQueue, QoS: 0
Backtrace:
4 SimpleCam 0x0000000102e99bf0 -[GPUImageView createDisplayFramebuffer] + 288
5 SimpleCam 0x0000000102e9a018 -[GPUImageView setDisplayFramebuffer] + 72
6 SimpleCam 0x0000000102e9a664 __44-[GPUImageView newFrameReadyAtTime:atIndex:]_block_invoke + 112
7 SimpleCam 0x0000000102e738c8 runSynchronouslyOnVideoProcessingQueue + 104
8 SimpleCam 0x0000000102e9a5d4 -[GPUImageView newFrameReadyAtTime:atIndex:] + 116
9 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
10 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
11 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
12 SimpleCam 0x0000000102e4ed94 -[GPUImageFilter newFrameReadyAtTime:atIndex:] + 216
13 SimpleCam 0x0000000102e4d048 -[GPUImageFilter informTargetsAboutNewFrameAtTime:] + 1496
14 SimpleCam 0x0000000102e48a70 -[GPUImageCropFilter newFrameReadyAtTime:atIndex:] + 152
15 SimpleCam 0x0000000102e96590 -[GPUImageVideoCamera updateTargetsForVideoCameraUsingCacheTextureAtWidth:height:time:] + 1716
16 SimpleCam 0x0000000102e96e9c -[GPUImageVideoCamera processVideoSampleBuffer:] + 2124
17 SimpleCam 0x0000000102e97a58 __74-[GPUImageVideoCamera captureOutput:didOutputSampleBuffer:fromConnection:]_block_invoke + 176
18 libdispatch.dylib 0x0000000103c217fc _dispatch_call_block_and_release + 24
19 libdispatch.dylib 0x0000000103c22bd8 _dispatch_client_callout + 16
20 libdispatch.dylib 0x0000000103c29b48 _dispatch_lane_serial_drain + 744
21 libdispatch.dylib 0x0000000103c2a6e4 _dispatch_lane_invoke + 448
22 libdispatch.dylib 0x0000000103c35adc _dispatch_workloop_worker_thread + 1324
23 libsystem_pthread.dylib 0x00000001b4d4af88 _pthread_wqthread + 276
24 libsystem_pthread.dylib 0x00000001b4d4dad4 start_wqthread + 8
2020-01-07 15:04:30.048897+0800 SimpleCam[11292:2714475] Can't end BackgroundTask: no background task exists with identifier 2 (0x2), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug.

GPUImageTwoInputFilter

使用GPUImageTwoInputFilter,添加两个输入,后一个输入的大小无法根据自身宽高比自适应GPUImageView的大小. GPUImageTwoInputFilter中
[super newFrameReadyAtTime:passOnFrameTime atIndex:0]; // Bugfix when trying to record: always use time from first input (unless indefinite, in which case use the second input)。
使用GPUImageTwoPassFilter,可以根据自身宽高比自适应GPUImageView的大小,但是画面会闪烁。
请问下有什么好的解决方法么？

SCTNNHelper 文件的 shared_ptr 找不到

大佬，无法运行

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