#import "ViewController.h"
#import "GPUImage.h"
#import <AssetsLibrary/ALAssetsLibrary.h>
@interface ViewController ()
@property (nonatomic , strong) UILabel *mLabel;
@end
@implementation ViewController
{
GPUImageMovie *movieFile;
GPUImageOutput<GPUImageInput> *filter;
GPUImageMovieWriter *movieWriter;
NSArray * _gifImages;
int _currenIndex;
NSTimeInterval _duration;
}
- (void)viewDidLoad {
[super viewDidLoad];
GPUImageView *filterView = [[GPUImageView alloc] initWithFrame:self.view.frame];
self.view = filterView;
self.mLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 100, 100)];
self.mLabel.textColor = [UIColor redColor];
[self.view addSubview:self.mLabel];
// 滤镜
filter = [[GPUImageNormalBlendFilter alloc] init];
// [(GPUImageDissolveBlendFilter *)filter setMix:0.5];
// 播放
NSURL *sampleURL = [[NSBundle mainBundle] URLForResource:@"abc" withExtension:@"mp4"];
AVAsset *asset = [AVAsset assetWithURL:sampleURL];
CGSize size = self.view.bounds.size;
movieFile = [[GPUImageMovie alloc] initWithAsset:asset];
movieFile.runBenchmark = YES;
movieFile.playAtActualSpeed = YES;
// 水印
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 100, 100, 100)];
label.text = @"我是水印";
label.font = [UIFont systemFontOfSize:30];
label.textColor = [UIColor redColor];
[label sizeToFit];
UIImage *image = [UIImage imageNamed:@"watermark.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame= CGRectMake(0, 0, 40, 40);
UIView *subView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, size.height, size.width)];
subView.backgroundColor = [UIColor clearColor];
imageView.center = CGPointMake(subView.bounds.size.width / 2, subView.bounds.size.height / 2+80);
[subView addSubview:imageView];
[subView addSubview:label];
NSString *path = [[NSBundle mainBundle] pathForResource:@"lunchGif的副本.gif" ofType:nil] ;
NSData *imageData = [NSData dataWithContentsOfFile:path];
_gifImages = [NSArray array];
_gifImages = [self praseGIFDataToImageArray:imageData];
_duration = [self durationForGifData:imageData];
_currenIndex = 0;
UIImage *image1 = _gifImages[_currenIndex];
UIImageView *imageV = [[UIImageView alloc] initWithFrame:CGRectMake(10, 10, image1.size.width*0.3, image1.size.height *0.3)];
imageV.backgroundColor = [UIColor orangeColor];
imageV.image = _gifImages[_currenIndex];
imageView.contentMode = UIViewContentModeScaleAspectFit;
[subView addSubview:imageV];
GPUImageUIElement *uielement3 = [[GPUImageUIElement alloc] initWithView:subView];
NSString *pathToMovie = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/Movie.m4v"];
unlink([pathToMovie UTF8String]);
NSURL *movieURL = [NSURL fileURLWithPath:pathToMovie];
movieWriter = [[GPUImageMovieWriter alloc] initWithMovieURL:movieURL size:CGSizeMake(640, 480)];
GPUImageFilter* progressFilter = [[GPUImageFilter alloc] init];
[movieFile addTarget:progressFilter];
[progressFilter addTarget:filter];
[uielement3 addTarget:filter];
movieWriter.shouldPassthroughAudio = YES;
movieFile.audioEncodingTarget = movieWriter;
[movieFile enableSynchronizedEncodingUsingMovieWriter:movieWriter];
// 显示到界面
[filter addTarget:filterView];
[filter addTarget:movieWriter];
[movieWriter startRecording];
[movieFile startProcessing];
CADisplayLink* dlink = [CADisplayLink displayLinkWithTarget:self selector:@selector(updateProgress)];
[dlink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
[dlink setPaused:NO];
__weak typeof(self) weakSelf = self;
[progressFilter setFrameProcessingCompletionBlock:^(GPUImageOutput *output, CMTime time) {
dispatch_async(dispatch_get_main_queue(), ^{
_currenIndex ++;
imageV.image = _gifImages[_currenIndex];
if (_currenIndex == _gifImages.count -1) {
_currenIndex = 0;
}
[uielement3 update];
});
[uielement3 updateWithTimestamp:time];
}];
[movieWriter setCompletionBlock:^{
__strong typeof(self) strongSelf = weakSelf;
[strongSelf->filter removeTarget:strongSelf->movieWriter];
[strongSelf->movieWriter finishRecording];
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(pathToMovie))
{
[library writeVideoAtPathToSavedPhotosAlbum:movieURL completionBlock:^(NSURL *assetURL, NSError *error)
{
dispatch_async(dispatch_get_main_queue(), ^{
if (error) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"视频保存失败" message:nil
delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"视频保存成功" message:nil
delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
}
});
}];
}
else {
NSLog(@"error mssg)");
}
}];
}
- (void)updateProgress
{
self.mLabel.text = [NSString stringWithFormat:@"Progress:%d%%", (int)(movieFile.progress * 100)];
[self.mLabel sizeToFit];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
//gif 转数组、
-(NSMutableArray *)praseGIFDataToImageArray:(NSData *)data;
{
NSMutableArray *frames = [[NSMutableArray alloc] init];
CGImageSourceRef src = CGImageSourceCreateWithData((CFDataRef)data, NULL);
CGFloat animationTime = 0.f;
if (src) {
size_t l = CGImageSourceGetCount(src);
frames = [NSMutableArray arrayWithCapacity:l];
for (size_t i = 0; i < l; i++) {
CGImageRef img = CGImageSourceCreateImageAtIndex(src, i, NULL);
NSDictionary *properties = (NSDictionary *)CFBridgingRelease(CGImageSourceCopyPropertiesAtIndex(src, i, NULL));
NSDictionary *frameProperties = [properties objectForKey:(NSString *)kCGImagePropertyGIFDictionary];
NSNumber *delayTime = [frameProperties objectForKey:(NSString *)kCGImagePropertyGIFUnclampedDelayTime];
animationTime += [delayTime floatValue];
if (img) {
[frames addObject:[UIImage imageWithCGImage:img]];
CGImageRelease(img);
}
}
CFRelease(src);
}
return frames;
}
//获取gif图片的总时长和循环次数
- (NSTimeInterval)durationForGifData:(NSData *)data{
//将GIF图片转换成对应的图片源
CGImageSourceRef gifSource = CGImageSourceCreateWithData((__bridge CFDataRef)data, NULL);
//获取其中图片源个数，即由多少帧图片组成
size_t frameCout = CGImageSourceGetCount(gifSource);
//定义数组存储拆分出来的图片
NSMutableArray* frames = [[NSMutableArray alloc] init];
NSTimeInterval totalDuration = 0;
for (size_t i=0; i<frameCout; i++) {
//从GIF图片中取出源图片
CGImageRef imageRef = CGImageSourceCreateImageAtIndex(gifSource, i, NULL);
//将图片源转换成UIimageView能使用的图片源
UIImage* imageName = [UIImage imageWithCGImage:imageRef];
//将图片加入数组中
[frames addObject:imageName];
NSTimeInterval duration = [self gifImageDeleyTime:gifSource index:i];
totalDuration += duration;
CGImageRelease(imageRef);
}
//获取循环次数
NSInteger loopCount;//循环次数
CFDictionaryRef properties = CGImageSourceCopyProperties(gifSource, NULL);
if (properties) {
CFDictionaryRef gif = CFDictionaryGetValue(properties, kCGImagePropertyGIFDictionary);
if (gif) {
CFTypeRef loop = CFDictionaryGetValue(gif, kCGImagePropertyGIFLoopCount);
if (loop) {
//如果loop == NULL，表示不循环播放，当loopCount == 0时，表示无限循环；
CFNumberGetValue(loop, kCFNumberNSIntegerType, &loopCount);
};
}
}
CFRelease(gifSource);
return totalDuration;
}
//获取GIF图片每帧的时长
- (NSTimeInterval)gifImageDeleyTime:(CGImageSourceRef)imageSource index:(NSInteger)index {
NSTimeInterval duration = 0;
CFDictionaryRef imageProperties = CGImageSourceCopyPropertiesAtIndex(imageSource, index, NULL);
if (imageProperties) {
CFDictionaryRef gifProperties;
BOOL result = CFDictionaryGetValueIfPresent(imageProperties, kCGImagePropertyGIFDictionary, (const void **)&gifProperties);
if (result) {
const void *durationValue;
if (CFDictionaryGetValueIfPresent(gifProperties, kCGImagePropertyGIFUnclampedDelayTime, &durationValue)) {
duration = [(__bridge NSNumber *)durationValue doubleValue];
if (duration < 0) {
if (CFDictionaryGetValueIfPresent(gifProperties, kCGImagePropertyGIFDelayTime, &durationValue)) {
duration = [(__bridge NSNumber *)durationValue doubleValue];
}
}
}
}
}
return duration;
}
@end
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