From c85f12a745dd89c17ecb7f800f780b0204176d0d Mon Sep 17 00:00:00 2001
From: Horace Ho <horaceh@gmail.com>
Date: Wed, 12 Aug 2015 11:15:07 +0800
Subject: [PATCH] Add GPUImageVideoCameraDelegate

---
 FastttCamera/FastttCameraInterface.h      | 10 ++++++++++
 FastttCamera/Filters/FastttFilterCamera.m | 11 ++++++++++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/FastttCamera/FastttCameraInterface.h b/FastttCamera/FastttCameraInterface.h
index 5349c49..f6a478e 100644
--- a/FastttCamera/FastttCameraInterface.h
+++ b/FastttCamera/FastttCameraInterface.h
@@ -7,6 +7,7 @@
 //
 
 #import <UIKit/UIKit.h>
+#import <CoreMedia/CoreMedia.h>
 #import "FastttCameraTypes.h"
 #import "FastttCapturedImage.h"
 #import "UIViewController+FastttCamera.h"
@@ -314,4 +315,13 @@
  */
 - (void)userDeniedCameraPermissionsForCameraController:(id<FastttCameraInterface>)cameraController;
 
+/**
+ *  Called for every video sample from GPUImageVideoCamera
+ *
+ *  @param sampleBuffer The CMSampleBuffer
+ *
+ *  @note Use this optional method to handle the CMSampleBuffer
+ */
+- (void)willOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer;
+
 @end
diff --git a/FastttCamera/Filters/FastttFilterCamera.m b/FastttCamera/Filters/FastttFilterCamera.m
index 1d3ef3e..304772d 100644
--- a/FastttCamera/Filters/FastttFilterCamera.m
+++ b/FastttCamera/Filters/FastttFilterCamera.m
@@ -16,7 +16,7 @@
 #import "FastttFilter.h"
 #import "FastttCapturedImage+Process.h"
 
-@interface FastttFilterCamera () <FastttFocusDelegate>
+@interface FastttFilterCamera () <FastttFocusDelegate, GPUImageVideoCameraDelegate>
 
 @property (nonatomic, strong) IFTTTDeviceOrientation *deviceOrientation;
 @property (nonatomic, strong) FastttFocus *fastFocus;
@@ -426,6 +426,7 @@ - (void)_setupCaptureSession
                 _stillCamera = [[GPUImageStillCamera alloc] initWithSessionPreset:AVCaptureSessionPresetPhoto cameraPosition:position];
                 _stillCamera.outputImageOrientation = UIInterfaceOrientationPortrait;
                 _stillCamera.horizontallyMirrorFrontFacingCamera = YES;
+                _stillCamera.delegate = self;
                 
                 switch (position) {
                     case AVCaptureDevicePositionBack:
@@ -723,4 +724,12 @@ - (BOOL)handleTapFocusAtPoint:(CGPoint)touchPoint
     return NO;
 }
 
+#pragma mark - GPUImageVideoCameraDelegate
+
+- (void)willOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer {
+    if ([self.delegate respondsToSelector:@selector(willOutputSampleBuffer:)]) {
+        [self.delegate willOutputSampleBuffer:sampleBuffer];
+    }
+}
+
 @end