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//
// SVGAPlayer.m
// SVGAPlayer
//
// Created by 崔明辉 on 16/6/17.
// Copyright © 2016年 UED Center. All rights reserved.
//
#import "SVGAPlayer.h"
#import "SVGAVideoEntity.h"
#import "SVGAVideoSpriteEntity.h"
#import "SVGAVideoSpriteFrameEntity.h"
#import "SVGAContentLayer.h"
#import "SVGABitmapLayer.h"
#import "SVGAVectorLayer.h"
#import "SVGAAudioLayer.h"
#import "SVGAAudioEntity.h"
@interface SVGAPlayer ()
@property (nonatomic, strong) CALayer *drawLayer;
@property (nonatomic, strong) NSArray<SVGAAudioLayer *> *audioLayers;
@property (nonatomic, strong) CADisplayLink *displayLink;
@property (nonatomic, assign) NSInteger currentFrame;
@property (nonatomic, copy) NSArray *contentLayers;
@property (nonatomic, copy) NSDictionary<NSString *, UIImage *> *dynamicObjects;
@property (nonatomic, copy) NSDictionary<NSString *, NSAttributedString *> *dynamicTexts;
@property (nonatomic, copy) NSDictionary<NSString *, SVGAPlayerDynamicDrawingBlock> *dynamicDrawings;
@property (nonatomic, copy) NSDictionary<NSString *, NSNumber *> *dynamicHiddens;
@property (nonatomic, assign) int loopCount;
@property (nonatomic, assign) NSRange currentRange;
@property (nonatomic, assign) BOOL forwardAnimating;
@property (nonatomic, assign) BOOL reversing;
@end
@implementation SVGAPlayer
- (instancetype)init {
if (self = [super init]) {
[self initPlayer];
}
return self;
}
- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
[self initPlayer];
}
return self;
}
- (instancetype)initWithCoder:(NSCoder *)aDecoder {
if (self = [super initWithCoder:aDecoder]) {
[self initPlayer];
}
return self;
}
- (void)initPlayer {
self.contentMode = UIViewContentModeTop;
self.clearsAfterStop = YES;
}
- (void)willMoveToSuperview:(UIView *)newSuperview {
[super willMoveToSuperview:newSuperview];
if (newSuperview == nil) {
[self stopAnimation:YES];
}
}
- (void)startAnimation {
if (self.videoItem == nil) {
NSLog(@"videoItem could not be nil！");
return;
} else if (self.drawLayer == nil) {
self.videoItem = _videoItem;
}
[self stopAnimation:NO];
self.loopCount = 0;
if (self.videoItem.FPS == 0) {
NSLog(@"videoItem FPS could not be 0！");
return;
}
self.displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(next)];
self.displayLink.frameInterval = 60 / self.videoItem.FPS;
[self.displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:self.mainRunLoopMode];
self.forwardAnimating = !self.reversing;
}
- (void)startAnimationWithRange:(NSRange)range reverse:(BOOL)reverse {
if (self.videoItem == nil) {
NSLog(@"videoItem could not be nil！");
return;
} else if (self.drawLayer == nil) {
self.videoItem = _videoItem;
}
[self stopAnimation:NO];
self.loopCount = 0;
if (self.videoItem.FPS == 0) {
NSLog(@"videoItem FPS could not be 0！");
return;
}
self.currentRange = range;
self.reversing = reverse;
if (reverse) {
self.currentFrame = MIN(self.videoItem.frames - 1, range.location + range.length - 1);
}
else {
self.currentFrame = MAX(0, range.location);
}
self.forwardAnimating = !self.reversing;
self.displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(next)];
self.displayLink.frameInterval = 60 / self.videoItem.FPS;
[self.displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:self.mainRunLoopMode];
}
- (void)pauseAnimation {
[self stopAnimation:NO];
}
- (void)stopAnimation {
[self stopAnimation:self.clearsAfterStop];
}
- (void)stopAnimation:(BOOL)clear {
self.forwardAnimating = NO;
if (self.displayLink != nil) {
[self.displayLink invalidate];
}
if (clear) {
[self clear];
}
[self clearAudios];
self.displayLink = nil;
}
- (void)clear {
self.contentLayers = nil;
[self.drawLayer removeFromSuperlayer];
self.drawLayer = nil;
}
- (void)clearAudios {
for (SVGAAudioLayer *layer in self.audioLayers) {
if (layer.audioPlaying) {
[layer.audioPlayer stop];
layer.audioPlaying = NO;
}
}
}
- (void)stepToFrame:(NSInteger)frame andPlay:(BOOL)andPlay {
if (self.videoItem == nil) {
NSLog(@"videoItem could not be nil！");
return;
} else if (self.drawLayer == nil) {
self.videoItem = _videoItem;
}
if (frame >= self.videoItem.frames || frame < 0) {
return;
}
[self pauseAnimation];
self.currentFrame = frame;
[self update];
if (andPlay) {
self.forwardAnimating = YES;
if (self.videoItem.FPS == 0) {
NSLog(@"videoItem FPS could not be 0！");
return;
}
self.displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(next)];
self.displayLink.frameInterval = 60 / self.videoItem.FPS;
[self.displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:self.mainRunLoopMode];
}
}
- (void)stepToPercentage:(CGFloat)percentage andPlay:(BOOL)andPlay {
NSInteger frame = (NSInteger)(self.videoItem.frames * percentage);
if (frame >= self.videoItem.frames && frame > 0) {
frame = self.videoItem.frames - 1;
}
[self stepToFrame:frame andPlay:andPlay];
}
- (void)draw {
self.drawLayer = [[CALayer alloc] init];
self.drawLayer.frame = CGRectMake(0, 0, self.videoItem.videoSize.width, self.videoItem.videoSize.height);
self.drawLayer.masksToBounds = true;
NSMutableDictionary *tempHostLayers = [NSMutableDictionary dictionary];
NSMutableArray *tempContentLayers = [NSMutableArray array];
[self.videoItem.sprites enumerateObjectsUsingBlock:^(SVGAVideoSpriteEntity * _Nonnull sprite, NSUInteger idx, BOOL * _Nonnull stop) {
UIImage *bitmap;
if (sprite.imageKey != nil) {
NSString *bitmapKey = [sprite.imageKey stringByDeletingPathExtension];
if (self.dynamicObjects[bitmapKey] != nil) {
bitmap = self.dynamicObjects[bitmapKey];
}
else {
bitmap = self.videoItem.images[bitmapKey];
}
}
SVGAContentLayer *contentLayer = [sprite requestLayerWithBitmap:bitmap];
contentLayer.imageKey = sprite.imageKey;
[tempContentLayers addObject:contentLayer];
if ([sprite.imageKey hasSuffix:@".matte"]) {
CALayer *hostLayer = [[CALayer alloc] init];
hostLayer.mask = contentLayer;
tempHostLayers[sprite.imageKey] = hostLayer;
} else {
if (sprite.matteKey && sprite.matteKey.length > 0) {
CALayer *hostLayer = tempHostLayers[sprite.matteKey];
[hostLayer addSublayer:contentLayer];
if (![sprite.matteKey isEqualToString:self.videoItem.sprites[idx - 1].matteKey]) {
[self.drawLayer addSublayer:hostLayer];
}
} else {
[self.drawLayer addSublayer:contentLayer];
}
}
if (sprite.imageKey != nil) {
if (self.dynamicTexts[sprite.imageKey] != nil) {
NSAttributedString *text = self.dynamicTexts[sprite.imageKey];
CGSize bitmapSize = CGSizeMake(self.videoItem.images[sprite.imageKey].size.width * self.videoItem.images[sprite.imageKey].scale, self.videoItem.images[sprite.imageKey].size.height * self.videoItem.images[sprite.imageKey].scale);
CGSize size = [text boundingRectWithSize:bitmapSize
options:NSStringDrawingUsesLineFragmentOrigin
context:NULL].size;
CATextLayer *textLayer = [CATextLayer layer];
textLayer.contentsScale = [[UIScreen mainScreen] scale];
[textLayer setString:self.dynamicTexts[sprite.imageKey]];
textLayer.frame = CGRectMake(0, 0, size.width, size.height);
[contentLayer addSublayer:textLayer];
contentLayer.textLayer = textLayer;
[contentLayer resetTextLayerProperties:text];
}
if (self.dynamicHiddens[sprite.imageKey] != nil &&
[self.dynamicHiddens[sprite.imageKey] boolValue] == YES) {
contentLayer.dynamicHidden = YES;
}
if (self.dynamicDrawings[sprite.imageKey] != nil) {
contentLayer.dynamicDrawingBlock = self.dynamicDrawings[sprite.imageKey];
}
}
}];
self.contentLayers = tempContentLayers;
[self.layer addSublayer:self.drawLayer];
NSMutableArray *audioLayers = [NSMutableArray array];
[self.videoItem.audios enumerateObjectsUsingBlock:^(SVGAAudioEntity * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
SVGAAudioLayer *audioLayer = [[SVGAAudioLayer alloc] initWithAudioItem:obj videoItem:self.videoItem];
[audioLayers addObject:audioLayer];
}];
self.audioLayers = audioLayers;
[self update];
[self resize];
}
- (void)resize {
if (self.contentMode == UIViewContentModeScaleAspectFit) {
CGFloat videoRatio = self.videoItem.videoSize.width / self.videoItem.videoSize.height;
CGFloat layerRatio = self.bounds.size.width / self.bounds.size.height;
if (videoRatio > layerRatio) {
CGFloat ratio = self.bounds.size.width / self.videoItem.videoSize.width;
CGPoint offset = CGPointMake(
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.width,
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.height
- (self.bounds.size.height - self.videoItem.videoSize.height * ratio) / 2.0
);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(ratio, 0, 0, ratio, -offset.x, -offset.y));
}
else {
CGFloat ratio = self.bounds.size.height / self.videoItem.videoSize.height;
CGPoint offset = CGPointMake(
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.width - (self.bounds.size.width - self.videoItem.videoSize.width * ratio) / 2.0,
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.height);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(ratio, 0, 0, ratio, -offset.x, -offset.y));
}
}
else if (self.contentMode == UIViewContentModeScaleAspectFill) {
CGFloat videoRatio = self.videoItem.videoSize.width / self.videoItem.videoSize.height;
CGFloat layerRatio = self.bounds.size.width / self.bounds.size.height;
if (videoRatio < layerRatio) {
CGFloat ratio = self.bounds.size.width / self.videoItem.videoSize.width;
CGPoint offset = CGPointMake(
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.width,
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.height
- (self.bounds.size.height - self.videoItem.videoSize.height * ratio) / 2.0
);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(ratio, 0, 0, ratio, -offset.x, -offset.y));
}
else {
CGFloat ratio = self.bounds.size.height / self.videoItem.videoSize.height;
CGPoint offset = CGPointMake(
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.width - (self.bounds.size.width - self.videoItem.videoSize.width * ratio) / 2.0,
(1.0 - ratio) / 2.0 * self.videoItem.videoSize.height);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(ratio, 0, 0, ratio, -offset.x, -offset.y));
}
}
else if (self.contentMode == UIViewContentModeTop) {
CGFloat scaleX = self.frame.size.width / self.videoItem.videoSize.width;
CGPoint offset = CGPointMake((1.0 - scaleX) / 2.0 * self.videoItem.videoSize.width, (1 - scaleX) / 2.0 * self.videoItem.videoSize.height);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(scaleX, 0, 0, scaleX, -offset.x, -offset.y));
}
else if (self.contentMode == UIViewContentModeBottom) {
CGFloat scaleX = self.frame.size.width / self.videoItem.videoSize.width;
CGPoint offset = CGPointMake(
(1.0 - scaleX) / 2.0 * self.videoItem.videoSize.width,
(1.0 - scaleX) / 2.0 * self.videoItem.videoSize.height);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(scaleX, 0, 0, scaleX, -offset.x, -offset.y + self.frame.size.height - self.videoItem.videoSize.height * scaleX));
}
else if (self.contentMode == UIViewContentModeLeft) {
CGFloat scaleY = self.frame.size.height / self.videoItem.videoSize.height;
CGPoint offset = CGPointMake((1.0 - scaleY) / 2.0 * self.videoItem.videoSize.width, (1 - scaleY) / 2.0 * self.videoItem.videoSize.height);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(scaleY, 0, 0, scaleY, -offset.x, -offset.y));
}
else if (self.contentMode == UIViewContentModeRight) {
CGFloat scaleY = self.frame.size.height / self.videoItem.videoSize.height;
CGPoint offset = CGPointMake(
(1.0 - scaleY) / 2.0 * self.videoItem.videoSize.width,
(1.0 - scaleY) / 2.0 * self.videoItem.videoSize.height);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(scaleY, 0, 0, scaleY, -offset.x + self.frame.size.width - self.videoItem.videoSize.width * scaleY, -offset.y));
}
else {
CGFloat scaleX = self.frame.size.width / self.videoItem.videoSize.width;
CGFloat scaleY = self.frame.size.height / self.videoItem.videoSize.height;
CGPoint offset = CGPointMake((1.0 - scaleX) / 2.0 * self.videoItem.videoSize.width, (1 - scaleY) / 2.0 * self.videoItem.videoSize.height);
self.drawLayer.transform = CATransform3DMakeAffineTransform(CGAffineTransformMake(scaleX, 0, 0, scaleY, -offset.x, -offset.y));
}
}
- (void)layoutSubviews {
[super layoutSubviews];
[self resize];
}
- (void)update {
[CATransaction setDisableActions:YES];
for (SVGAContentLayer *layer in self.contentLayers) {
if ([layer isKindOfClass:[SVGAContentLayer class]]) {
[layer stepToFrame:self.currentFrame];
}
}
[CATransaction setDisableActions:NO];
if (self.forwardAnimating && self.audioLayers.count > 0) {
for (SVGAAudioLayer *layer in self.audioLayers) {
if (!layer.audioPlaying && layer.audioItem.startFrame <= self.currentFrame && self.currentFrame <= layer.audioItem.endFrame) {
[layer.audioPlayer setCurrentTime:(NSTimeInterval)(layer.audioItem.startTime / 1000)];
[layer.audioPlayer play];
layer.audioPlaying = YES;
}
if (layer.audioPlaying && layer.audioItem.endFrame <= self.currentFrame) {
[layer.audioPlayer stop];
layer.audioPlaying = NO;
}
}
}
}
- (void)next {
if (self.reversing) {
self.currentFrame--;
if (self.currentFrame < (NSInteger)MAX(0, self.currentRange.location)) {
self.currentFrame = MIN(self.videoItem.frames - 1, self.currentRange.location + self.currentRange.length - 1);
self.loopCount++;
}
}
else {
self.currentFrame++;
if (self.currentFrame >= MIN(self.videoItem.frames, self.currentRange.location + self.currentRange.length)) {
self.currentFrame = MAX(0, self.currentRange.location);
[self clearAudios];
self.loopCount++;
}
}
if (self.loops > 0 && self.loopCount >= self.loops) {
[self stopAnimation];
if (!self.clearsAfterStop && [self.fillMode isEqualToString:@"Backward"]) {
[self stepToFrame:MAX(0, self.currentRange.location) andPlay:NO];
}
else if (!self.clearsAfterStop && [self.fillMode isEqualToString:@"Forward"]) {
[self stepToFrame:MIN(self.videoItem.frames - 1, self.currentRange.location + self.currentRange.length - 1) andPlay:NO];
}
id delegate = self.delegate;
if (delegate != nil && [delegate respondsToSelector:@selector(svgaPlayerDidFinishedAnimation:)]) {
[delegate svgaPlayerDidFinishedAnimation:self];
}
return;
}
[self update];
id delegate = self.delegate;
if (delegate != nil && [delegate respondsToSelector:@selector(svgaPlayerDidAnimatedToFrame:)]) {
[delegate svgaPlayerDidAnimatedToFrame:self.currentFrame];
}
if (delegate != nil && [delegate respondsToSelector:@selector(svgaPlayerDidAnimatedToPercentage:)] && self.videoItem.frames > 0) {
[delegate svgaPlayerDidAnimatedToPercentage:(CGFloat)(self.currentFrame + 1) / (CGFloat)self.videoItem.frames];
}
}
- (void)setVideoItem:(SVGAVideoEntity *)videoItem {
_videoItem = videoItem;
_currentRange = NSMakeRange(0, videoItem.frames);
_reversing = NO;
_currentFrame = 0;
_loopCount = 0;
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
[self clear];
[self draw];
}];
}
#pragma mark - Dynamic Object
- (void)setImage:(UIImage *)image forKey:(NSString *)aKey {
if (image == nil) {
return;
}
NSMutableDictionary *mutableDynamicObjects = [self.dynamicObjects mutableCopy];
[mutableDynamicObjects setObject:image forKey:aKey];
self.dynamicObjects = mutableDynamicObjects;
if (self.contentLayers.count > 0) {
for (SVGAContentLayer *layer in self.contentLayers) {
if ([layer isKindOfClass:[SVGAContentLayer class]] && [layer.imageKey isEqualToString:aKey]) {
layer.bitmapLayer.contents = (__bridge id _Nullable)([image CGImage]);
}
}
}
}
- (void)setImageWithURL:(NSURL *)URL forKey:(NSString *)aKey {
[[[NSURLSession sharedSession] dataTaskWithURL:URL completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
if (error == nil && data != nil) {
UIImage *image = [UIImage imageWithData:data];
if (image != nil) {
[[NSOperationQueue mainQueue] addOperationWithBlock:^{
[self setImage:image forKey:aKey];
}];
}
}
}] resume];
}
- (void)setImage:(UIImage *)image forKey:(NSString *)aKey referenceLayer:(CALayer *)referenceLayer {
[self setImage:image forKey:aKey];
}
- (void)setAttributedText:(NSAttributedString *)attributedText forKey:(NSString *)aKey {
if (attributedText == nil) {
return;
}
NSMutableDictionary *mutableDynamicTexts = [self.dynamicTexts mutableCopy];
[mutableDynamicTexts setObject:attributedText forKey:aKey];
self.dynamicTexts = mutableDynamicTexts;
if (self.contentLayers.count > 0) {
CGSize bitmapSize = CGSizeMake(self.videoItem.images[aKey].size.width * self.videoItem.images[aKey].scale, self.videoItem.images[aKey].size.height * self.videoItem.images[aKey].scale);
CGSize size = [attributedText boundingRectWithSize:bitmapSize
options:NSStringDrawingUsesLineFragmentOrigin context:NULL].size;
CATextLayer *textLayer;
for (SVGAContentLayer *layer in self.contentLayers) {
if ([layer isKindOfClass:[SVGAContentLayer class]] && [layer.imageKey isEqualToString:aKey]) {
textLayer = layer.textLayer;
if (textLayer == nil) {
textLayer = [CATextLayer layer];
[layer addSublayer:textLayer];
layer.textLayer = textLayer;
[layer resetTextLayerProperties:attributedText];
}
}
}
if (textLayer != nil) {
textLayer.contentsScale = [[UIScreen mainScreen] scale];
[textLayer setString:attributedText];
textLayer.frame = CGRectMake(0, 0, size.width, size.height);
}
}
}
- (void)setDrawingBlock:(SVGAPlayerDynamicDrawingBlock)drawingBlock forKey:(NSString *)aKey {
NSMutableDictionary *mutableDynamicDrawings = [self.dynamicDrawings mutableCopy];
[mutableDynamicDrawings setObject:drawingBlock forKey:aKey];
self.dynamicDrawings = mutableDynamicDrawings;
if (self.contentLayers.count > 0) {
for (SVGAContentLayer *layer in self.contentLayers) {
if ([layer isKindOfClass:[SVGAContentLayer class]] &&
[layer.imageKey isEqualToString:aKey]) {
layer.dynamicDrawingBlock = drawingBlock;
}
}
}
}
- (void)setHidden:(BOOL)hidden forKey:(NSString *)aKey {
NSMutableDictionary *mutableDynamicHiddens = [self.dynamicHiddens mutableCopy];
[mutableDynamicHiddens setObject:@(hidden) forKey:aKey];
self.dynamicHiddens = mutableDynamicHiddens;
if (self.contentLayers.count > 0) {
for (SVGAContentLayer *layer in self.contentLayers) {
if ([layer isKindOfClass:[SVGAContentLayer class]] &&
[layer.imageKey isEqualToString:aKey]) {
layer.dynamicHidden = hidden;
}
}
}
}
- (void)clearDynamicObjects {
self.dynamicObjects = nil;
self.dynamicTexts = nil;
self.dynamicHiddens = nil;
self.dynamicDrawings = nil;
}
- (NSDictionary *)dynamicObjects {
if (_dynamicObjects == nil) {
_dynamicObjects = @{};
}
return _dynamicObjects;
}
- (NSDictionary *)dynamicTexts {
if (_dynamicTexts == nil) {
_dynamicTexts = @{};
}
return _dynamicTexts;
}
- (NSDictionary *)dynamicHiddens {
if (_dynamicHiddens == nil) {
_dynamicHiddens = @{};
}
return _dynamicHiddens;
}
- (NSDictionary<NSString *,SVGAPlayerDynamicDrawingBlock> *)dynamicDrawings {
if (_dynamicDrawings == nil) {
_dynamicDrawings = @{};
}
return _dynamicDrawings;
}
- (NSRunLoopMode)mainRunLoopMode {
if (!_mainRunLoopMode) {
_mainRunLoopMode = NSRunLoopCommonModes;
}
return _mainRunLoopMode;
}
@end