1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
#import "GPUImageOutput.h"
// The bytes passed into this input are not copied or retained, but you are free to deallocate them after they are used by this filter.
// The bytes are uploaded and stored within a texture, so nothing is kept locally.
// The default format for input bytes is GPUPixelFormatBGRA, unless specified with pixelFormat:
// The default type for input bytes is GPUPixelTypeUByte, unless specified with pixelType:
typedef enum {
GPUPixelFormatBGRA = GL_BGRA,
GPUPixelFormatRGBA = GL_RGBA,
GPUPixelFormatRGB = GL_RGB,
GPUPixelFormatLuminance = GL_LUMINANCE
} GPUPixelFormat;
typedef enum {
GPUPixelTypeUByte = GL_UNSIGNED_BYTE,
GPUPixelTypeFloat = GL_FLOAT
} GPUPixelType;
@interface GPUImageRawDataInput : GPUImageOutput
{
CGSize uploadedImageSize;
dispatch_semaphore_t dataUpdateSemaphore;
}
// Initialization and teardown
- (id)initWithBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize;
- (id)initWithBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize pixelFormat:(GPUPixelFormat)pixelFormat;
- (id)initWithBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize pixelFormat:(GPUPixelFormat)pixelFormat type:(GPUPixelType)pixelType;
/** Input data pixel format
*/
@property (readwrite, nonatomic) GPUPixelFormat pixelFormat;
@property (readwrite, nonatomic) GPUPixelType pixelType;
// Image rendering
- (void)updateDataFromBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize;
- (void)processData;
- (void)processDataForTimestamp:(CMTime)frameTime;
- (CGSize)outputImageSize;
@end