snapshoted

场景

主播可以在预览时打开美颜截图，作为自己的房间的图片

在SDK中有如下三种方式可以得到截图, 可以根据需要选择

截图保存文件

takePhotoWithQuality参数配置： jpegCompressionQuality:设置图像的压缩比例 filename:图片的文件名

-(void) takePhotoWithQuality:(CGFloat)jpegCompressionQuality
                     fileName:(NSString *)filename;
[_kit.streamerBase takePhotoWithQuality:1 fileName:@"3/4/c.jpg"];

截图提供UIImage

getSnapshotWithCompletion获取当前编码/预览的截图，通过完成代码块获取到截图完成的图像

- (void)saveImage: (UIImage *)image
               to: (NSString*)path {
    NSString * dir = [NSHomeDirectory() stringByAppendingString:@"/Documents/"];
    NSString * file = [dir stringByAppendingPathComponent:path];
    NSData *imageData = UIImagePNGRepresentation(image);
    BOOL ret = [imageData writeToFile:file atomically:YES];
    NSLog(@"write %@ %@", file, ret ? @"OK":@"failed");
}
[_kit.streamerBase getSnapshotWithCompletion:^(UIImage * img){
   [weakself saveImage: img
                    to: @"snap1.png" ];
}];

直接从GPUImage的滤镜中获取输出的图像

(saveImage 参照上一种方式) 需要先声明下一帧图像需要作为截图, 然后使用滤镜的imageFromCurrentFramebuffer属性可以得到UIImage*类型的图像

[_filter useNextFrameForImageCapture];
[self saveImage: _filter.imageFromCurrentFramebuffer
             to: @"snap2.png" ];