SHOW:
|
|
- or go back to the newest paste.
| 1 | #import <QCAR/Renderer.h> | |
| 2 | #import <QCAR/VideoBackgroundTextureInfo.h> | |
| 3 | #import <QCAR/Image.h> | |
| 4 | #import "QCARutils.h" | |
| 5 | ||
| 6 | @interface ImageRecognizerARView : UIView {
| |
| 7 | EAGLContext *context_; | |
| 8 | GLuint framebuffer_; | |
| 9 | GLuint renderbuffer_; | |
| 10 | } | |
| 11 | ||
| 12 | - (void)renderFrameQCAR; | |
| 13 | - (void)renderFrameQCARFixed; | |
| 14 | ||
| 15 | @end | |
| 16 | ||
| 17 | ||
| 18 | @implementation ImageRecognizerARView | |
| 19 | ||
| 20 | + (Class)layerClass {
| |
| 21 | return [CAEAGLLayer class]; | |
| 22 | } | |
| 23 | ||
| 24 | - (id)initWithFrame:(CGRect)frame {
| |
| 25 | if ((self = [super initWithFrame:frame])) {
| |
| 26 | QCARutils *qUtils = [QCARutils getInstance]; | |
| 27 | qUtils.QCARFlags = QCAR::GL_20; | |
| 28 | ||
| 29 | CAEAGLLayer *layer = (CAEAGLLayer *)self.layer; | |
| 30 | layer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys: | |
| 31 | kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, | |
| 32 | nil]; | |
| 33 | ||
| 34 | context_ = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2]; | |
| 35 | } return self; | |
| 36 | } | |
| 37 | ||
| 38 | - (void)dealloc {
| |
| 39 | ||
| 40 | // This is called on main thread, so we need to store the main thread context, and restore it when we're done | |
| 41 | ||
| 42 | EAGLContext *mainThreadContext = [EAGLContext currentContext]; | |
| 43 | [EAGLContext setCurrentContext:context_]; | |
| 44 | ||
| 45 | if (framebuffer_) {
| |
| 46 | glDeleteFramebuffers(1, &framebuffer_); | |
| 47 | glDeleteFramebuffers(1, &renderbuffer_); | |
| 48 | } | |
| 49 | ||
| 50 | // Restore main thread context | |
| 51 | [EAGLContext setCurrentContext:mainThreadContext]; | |
| 52 | ||
| 53 | [context_ release]; | |
| 54 | ||
| 55 | [super dealloc]; | |
| 56 | } | |
| 57 | ||
| 58 | - (void)createFrameBuffer {
| |
| 59 | ||
| 60 | // This is called on main thread | |
| 61 | ||
| 62 | EAGLContext *mainThreadContext = [EAGLContext currentContext]; | |
| 63 | [EAGLContext setCurrentContext:context_]; | |
| 64 | ||
| 65 | glGenFramebuffers(1, &framebuffer_); | |
| 66 | glGenRenderbuffers(1, &renderbuffer_); | |
| 67 | ||
| 68 | glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_); | |
| 69 | glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer_); | |
| 70 | ||
| 71 | [context_ renderbufferStorage:GL_RENDERBUFFER fromDrawable:(CAEAGLLayer*)self.layer]; | |
| 72 | glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuffer_); | |
| 73 | ||
| 74 | // Restore main thread context | |
| 75 | [EAGLContext setCurrentContext:mainThreadContext]; | |
| 76 | } | |
| 77 | ||
| 78 | - (void)renderFrameQCAR {
| |
| 79 | ||
| 80 | // This is called on background thread | |
| 81 | ||
| 82 | if (!framebuffer_) {
| |
| 83 | [self performSelectorOnMainThread:@selector(createFrameBuffer) withObject:nil waitUntilDone:YES]; | |
| 84 | } | |
| 85 | ||
| 86 | [EAGLContext setCurrentContext:context_]; | |
| 87 | ||
| 88 | glBindFramebuffer(GL_FRAMEBUFFER, framebuffer_); | |
| 89 | glBindRenderbuffer(GL_RENDERBUFFER, renderbuffer_); | |
| 90 | ||
| 91 | //glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB565, 1, 1); | |
| 92 | ||
| 93 | GLint width, height; | |
| 94 | glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width); | |
| 95 | glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height); | |
| 96 | glViewport(0, 0, width, height); | |
| 97 | ||
| 98 | - | // Skip the first frame |
| 98 | + | // Skip the first few frames |
| 99 | - | static BOOL isFirstFrame = YES; |
| 99 | + | static int frameCount = 0; |
| 100 | - | if (isFirstFrame) {
|
| 100 | + | if (frameCount < 5) {
|
| 101 | - | isFirstFrame = NO; |
| 101 | + | frameCount++; |
| 102 | return; | |
| 103 | } | |
| 104 | ||
| 105 | [self renderFrameQCARFixed]; | |
| 106 | ||
| 107 | } | |
| 108 | ||
| 109 | - (void)renderFrameQCARFixed {
| |
| 110 | ||
| 111 | // Use this method instead of renderFrameQCAR | |
| 112 | // Note that this is also called on a background thread | |
| 113 | ||
| 114 | QCAR::State state = QCAR::Renderer::getInstance().begin(); | |
| 115 | ||
| 116 | const QCAR::Frame frame = state.getFrame(); | |
| 117 | ||
| 118 | // This should now be safe | |
| 119 | int numImages = frame.getNumImages(); | |
| 120 | NSLog(@"numImages %d", numImages); | |
| 121 | ||
| 122 | QCAR::Renderer::getInstance().end(); | |
| 123 | } | |
| 124 | ||
| 125 | @end |
