#import "GLProgram.h"
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#import "GPUImageFramebuffer.h"
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#import "GPUImageFramebufferCache.h"
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#define GPUImageRotationSwapsWidthAndHeight(rotation) ((rotation) == kGPUImageRotateLeft || (rotation) == kGPUImageRotateRight || (rotation) == kGPUImageRotateRightFlipVertical || (rotation) == kGPUImageRotateRightFlipHorizontal)
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typedef enum { kGPUImageNoRotation, kGPUImageRotateLeft, kGPUImageRotateRight, kGPUImageFlipVertical, kGPUImageFlipHorizonal, kGPUImageRotateRightFlipVertical, kGPUImageRotateRightFlipHorizontal, kGPUImageRotate180 } GPUImageRotationMode;
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@interface GPUImageContext : NSObject
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@property(readonly, nonatomic) dispatch_queue_t contextQueue;
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@property(readwrite, retain, nonatomic) GLProgram *currentShaderProgram;
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@property(readonly, retain, nonatomic) EAGLContext *context;
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@property(readonly) CVOpenGLESTextureCacheRef coreVideoTextureCache;
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@property(readonly) GPUImageFramebufferCache *framebufferCache;
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+ (void *)contextKey;
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+ (GPUImageContext *)sharedImageProcessingContext;
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+ (dispatch_queue_t)sharedContextQueue;
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+ (GPUImageFramebufferCache *)sharedFramebufferCache;
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+ (void)useImageProcessingContext;
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- (void)useAsCurrentContext;
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+ (void)setActiveShaderProgram:(GLProgram *)shaderProgram;
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- (void)setContextShaderProgram:(GLProgram *)shaderProgram;
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+ (GLint)maximumTextureSizeForThisDevice;
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+ (GLint)maximumTextureUnitsForThisDevice;
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+ (GLint)maximumVaryingVectorsForThisDevice;
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+ (BOOL)deviceSupportsOpenGLESExtension:(NSString *)extension;
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+ (BOOL)deviceSupportsRedTextures;
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+ (BOOL)deviceSupportsFramebufferReads;
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+ (CGSize)sizeThatFitsWithinATextureForSize:(CGSize)inputSize;
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- (void)presentBufferForDisplay;
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- (GLProgram *)programForVertexShaderString:(NSString *)vertexShaderString fragmentShaderString:(NSString *)fragmentShaderString;
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- (void)useSharegroup:(EAGLSharegroup *)sharegroup;
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// Manage fast texture upload
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+ (BOOL)supportsFastTextureUpload;
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@end
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@protocol GPUImageInput <NSObject>
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- (void)newFrameReadyAtTime:(CMTime)frameTime atIndex:(NSInteger)textureIndex;
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- (void)setInputFramebuffer:(GPUImageFramebuffer *)newInputFramebuffer atIndex:(NSInteger)textureIndex;
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- (NSInteger)nextAvailableTextureIndex;
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- (void)setInputSize:(CGSize)newSize atIndex:(NSInteger)textureIndex;
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- (void)setInputRotation:(GPUImageRotationMode)newInputRotation atIndex:(NSInteger)textureIndex;
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- (CGSize)maximumOutputSize;
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- (void)endProcessing;
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- (BOOL)shouldIgnoreUpdatesToThisTarget;
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- (BOOL)enabled;
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- (BOOL)wantsMonochromeInput;
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- (void)setCurrentlyReceivingMonochromeInput:(BOOL)newValue;
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@end
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