140 lines
3.8 KiB
Objective-C
140 lines
3.8 KiB
Objective-C
#import "GPUImageRawDataInput.h"
|
|
|
|
@interface GPUImageRawDataInput()
|
|
- (void)uploadBytes:(GLubyte *)bytesToUpload;
|
|
@end
|
|
|
|
@implementation GPUImageRawDataInput
|
|
|
|
@synthesize pixelFormat = _pixelFormat;
|
|
@synthesize pixelType = _pixelType;
|
|
|
|
#pragma mark -
|
|
#pragma mark Initialization and teardown
|
|
|
|
- (id)initWithBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize;
|
|
{
|
|
if (!(self = [self initWithBytes:bytesToUpload size:imageSize pixelFormat:GPUPixelFormatBGRA type:GPUPixelTypeUByte]))
|
|
{
|
|
return nil;
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
- (id)initWithBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize pixelFormat:(GPUPixelFormat)pixelFormat;
|
|
{
|
|
if (!(self = [self initWithBytes:bytesToUpload size:imageSize pixelFormat:pixelFormat type:GPUPixelTypeUByte]))
|
|
{
|
|
return nil;
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
- (id)initWithBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize pixelFormat:(GPUPixelFormat)pixelFormat type:(GPUPixelType)pixelType;
|
|
{
|
|
if (!(self = [super init]))
|
|
{
|
|
return nil;
|
|
}
|
|
|
|
dataUpdateSemaphore = dispatch_semaphore_create(1);
|
|
|
|
uploadedImageSize = imageSize;
|
|
self.pixelFormat = pixelFormat;
|
|
self.pixelType = pixelType;
|
|
|
|
[self uploadBytes:bytesToUpload];
|
|
|
|
return self;
|
|
}
|
|
|
|
// ARC forbids explicit message send of 'release'; since iOS 6 even for dispatch_release() calls: stripping it out in that case is required.
|
|
- (void)dealloc;
|
|
{
|
|
#if !OS_OBJECT_USE_OBJC
|
|
if (dataUpdateSemaphore != NULL)
|
|
{
|
|
dispatch_release(dataUpdateSemaphore);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#pragma mark -
|
|
#pragma mark Image rendering
|
|
|
|
- (void)uploadBytes:(GLubyte *)bytesToUpload;
|
|
{
|
|
[GPUImageContext useImageProcessingContext];
|
|
|
|
// TODO: This probably isn't right, and will need to be corrected
|
|
outputFramebuffer = [[GPUImageContext sharedFramebufferCache] fetchFramebufferForSize:uploadedImageSize textureOptions:self.outputTextureOptions onlyTexture:YES];
|
|
|
|
glBindTexture(GL_TEXTURE_2D, [outputFramebuffer texture]);
|
|
glTexImage2D(GL_TEXTURE_2D, 0, _pixelFormat==GPUPixelFormatRGB ? GL_RGB : GL_RGBA, (int)uploadedImageSize.width, (int)uploadedImageSize.height, 0, (GLint)_pixelFormat, (GLenum)_pixelType, bytesToUpload);
|
|
}
|
|
|
|
- (void)updateDataFromBytes:(GLubyte *)bytesToUpload size:(CGSize)imageSize;
|
|
{
|
|
uploadedImageSize = imageSize;
|
|
|
|
[self uploadBytes:bytesToUpload];
|
|
}
|
|
|
|
- (void)processData;
|
|
{
|
|
if (dispatch_semaphore_wait(dataUpdateSemaphore, DISPATCH_TIME_NOW) != 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
runAsynchronouslyOnVideoProcessingQueue(^{
|
|
|
|
CGSize pixelSizeOfImage = [self outputImageSize];
|
|
|
|
for (id<GPUImageInput> currentTarget in targets)
|
|
{
|
|
NSInteger indexOfObject = [targets indexOfObject:currentTarget];
|
|
NSInteger textureIndexOfTarget = [[targetTextureIndices objectAtIndex:indexOfObject] integerValue];
|
|
|
|
[currentTarget setInputSize:pixelSizeOfImage atIndex:textureIndexOfTarget];
|
|
[currentTarget setInputFramebuffer:outputFramebuffer atIndex:textureIndexOfTarget];
|
|
[currentTarget newFrameReadyAtTime:kCMTimeInvalid atIndex:textureIndexOfTarget];
|
|
}
|
|
|
|
dispatch_semaphore_signal(dataUpdateSemaphore);
|
|
});
|
|
}
|
|
|
|
- (void)processDataForTimestamp:(CMTime)frameTime;
|
|
{
|
|
if (dispatch_semaphore_wait(dataUpdateSemaphore, DISPATCH_TIME_NOW) != 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
runAsynchronouslyOnVideoProcessingQueue(^{
|
|
|
|
CGSize pixelSizeOfImage = [self outputImageSize];
|
|
|
|
for (id<GPUImageInput> currentTarget in targets)
|
|
{
|
|
NSInteger indexOfObject = [targets indexOfObject:currentTarget];
|
|
NSInteger textureIndexOfTarget = [[targetTextureIndices objectAtIndex:indexOfObject] integerValue];
|
|
|
|
[currentTarget setInputSize:pixelSizeOfImage atIndex:textureIndexOfTarget];
|
|
[currentTarget newFrameReadyAtTime:frameTime atIndex:textureIndexOfTarget];
|
|
}
|
|
|
|
dispatch_semaphore_signal(dataUpdateSemaphore);
|
|
});
|
|
}
|
|
|
|
- (CGSize)outputImageSize;
|
|
{
|
|
return uploadedImageSize;
|
|
}
|
|
|
|
@end
|