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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,34 @@ | ||
| // | ||
| // FMCameraContext.h | ||
| // LearnOpenGL | ||
| // | ||
| // Created by yfm on 2021/9/18. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| #import <OpenGLES/ES2/gl.h> | ||
| #import <OpenGLES/ES2/glext.h> | ||
| #import <OpenGLES/EAGLDrawable.h> | ||
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| #import <CoreMedia/CoreMedia.h> | ||
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| NS_ASSUME_NONNULL_BEGIN | ||
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| @interface FMCameraContext : NSObject | ||
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| // 当前使用的上下文，相机输出回调中，表示当前线程激活的上下文（重要：上下文不一致的话什么都画不出来） | ||
| @property(readonly, retain, nonatomic) EAGLContext *context; | ||
| // 上下文队列 | ||
| @property(readonly, nonatomic) dispatch_queue_t contextQueue; | ||
| // 纹理缓存对象 | ||
| @property(readonly) CVOpenGLESTextureCacheRef coreVideoTextureCache; | ||
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| + (FMCameraContext *)shared; | ||
| + (void)useImageProcessingContext; | ||
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| - (void)presentBufferForDisplay; | ||
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| @end | ||
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| NS_ASSUME_NONNULL_END |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| // | ||
| // FMCameraContext.m | ||
| // LearnOpenGL | ||
| // | ||
| // Created by yfm on 2021/9/18. | ||
| // | ||
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| #import "FMCameraContext.h" | ||
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| @implementation FMCameraContext | ||
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| @synthesize context = _context; | ||
| @synthesize coreVideoTextureCache = _coreVideoTextureCache; | ||
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| - (instancetype)init { | ||
| if(self = [super init]) { | ||
| _contextQueue = dispatch_queue_create("com.sunsetlakesoftware.GPUImage.openGLESContextQueue", DISPATCH_QUEUE_SERIAL); | ||
| } | ||
| return self; | ||
| } | ||
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| + (FMCameraContext *)shared { | ||
| static FMCameraContext *instance = nil; | ||
| static dispatch_once_t onceToken; | ||
| dispatch_once(&onceToken, ^{ | ||
| instance = [[[self class] alloc] init]; | ||
| }); | ||
| return instance; | ||
| } | ||
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| + (void)useImageProcessingContext { | ||
| [[FMCameraContext shared] useAsCurrentContext]; | ||
| } | ||
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| - (void)useAsCurrentContext { | ||
| EAGLContext *currentContext = [self context]; | ||
| if ([EAGLContext currentContext] != currentContext) | ||
| { | ||
| [EAGLContext setCurrentContext:currentContext]; | ||
| } | ||
| } | ||
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| - (EAGLContext *)context { | ||
| if (_context == nil) { | ||
| EAGLContext *eaglContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2]; | ||
| _context = eaglContext; | ||
| [EAGLContext setCurrentContext:_context]; | ||
| glDisable(GL_DEPTH_TEST); | ||
| } | ||
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| return _context; | ||
| } | ||
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| - (CVOpenGLESTextureCacheRef)coreVideoTextureCache { | ||
| if (_coreVideoTextureCache == NULL) { | ||
| CVReturn err = CVOpenGLESTextureCacheCreate(kCFAllocatorDefault, NULL, [self context], NULL, &_coreVideoTextureCache); | ||
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| if (err){ | ||
| NSAssert(NO, @"Error at CVOpenGLESTextureCacheCreate %d", err); | ||
| } | ||
| } | ||
| return _coreVideoTextureCache; | ||
| } | ||
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| - (void)presentBufferForDisplay { | ||
| [self.context presentRenderbuffer:GL_RENDERBUFFER]; | ||
| } | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| // | ||
| // FMCameraLutView.h | ||
| // LearnOpenGL | ||
| // | ||
| // Created by yfm on 2021/9/19. | ||
| // | ||
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| #import <UIKit/UIKit.h> | ||
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| NS_ASSUME_NONNULL_BEGIN | ||
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| @interface FMCameraLutView : UIView | ||
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| - (void)renderPixelBuffer:(CVPixelBufferRef)pixelBuffer; | ||
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| @end | ||
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| NS_ASSUME_NONNULL_END |
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