我想從gif文件中獲取每秒幀數 我將gif文件轉換爲NSData,然後從該NSData中獲取使用此代碼的幀數組: - (NSMutableArray *)getGifFrames: (NSData的*)數據{我如何從gif文件獲得每秒幀數?
NSMutableArray *frames = nil;
CGImageSourceRef src = CGImageSourceCreateWithData((CFDataRef)data, NULL);
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);
if (img) {
[frames addObject:[UIImage imageWithCGImage:img]];
CGImageRelease(img);
}
}
CFRelease(src);
}
return frames;
}
有反正我能得到GIF的FPS? 謝謝
這是否意味着GIF有效地具有可變的幀速率? – rjstelling 2012-03-07 11:51:28
@rjstelling確切的是 – AnthonyBlake 2012-03-07 12:10:51
謝謝你的迴應! – Legnus 2012-03-07 14:21:25