当尝试播放视频同时录制其他来源的声音时，QTKit 使我的程序冻结

发布于 2024-10-24 07:04:33 字数 968 浏览 1 评论 0原文

我有一个应用程序，我使用 QTKit 来获取有关机器周围声音的实时信息。当这种情况发生时，一些用户事件可能会启动视频的播放（仍然使用 QTKit）。发生这种情况时，我看到视频正在播放，但是输入声音停止被获取和处理。

电影视图在 avakeFromNib 中初始化

mCursor = 0;
mFileManager = [NSFileManager defaultManager];
mPath = [[[mFileManager currentDirectoryPath] stringByAppendingString:@"/Vids/"]retain];
mMovieFiles= [[[mFileManager contentsOfDirectoryAtPath:mPath error:nil]filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self ENDSWITH '.mov'"]]retain];
[mMovie init];
[mMovieView setControllerVisible:NO];
[mMovieView setEditable:NO];

当播放被点击时，音频输入流停止

    if (sender==mPlay)
{
    [mGraphView setHidden:YES];
    [mMovieView setHidden:NO];
    mMovie = [[QTMovie movieWithFile:[mPath stringByAppendingString:[mMovieFiles objectAtIndex:mCursor]] error:nil] retain];
    [mMovieView setMovie:mMovie];
    [mMovieView setNeedsDisplay:YES];
    [mMovieView play:self];
}

关于如何使它工作的想法？

提前致谢

原文

I have an application where I use QTKit to acquire realtime information about the sounds surrounding the machine. While this is happening some user events may launch the playback of a video (still using QTKit). When this happens I see the video playing however the input sound stops being acquired and processed.

The movie View is initialized in the avakeFromNib

mCursor = 0;
mFileManager = [NSFileManager defaultManager];
mPath = [[[mFileManager currentDirectoryPath] stringByAppendingString:@"/Vids/"]retain];
mMovieFiles= [[[mFileManager contentsOfDirectoryAtPath:mPath error:nil]filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"self ENDSWITH '.mov'"]]retain];
[mMovie init];
[mMovieView setControllerVisible:NO];
[mMovieView setEditable:NO];

When Play is hit the audio input stream stops

    if (sender==mPlay)
{
    [mGraphView setHidden:YES];
    [mMovieView setHidden:NO];
    mMovie = [[QTMovie movieWithFile:[mPath stringByAppendingString:[mMovieFiles objectAtIndex:mCursor]] error:nil] retain];
    [mMovieView setMovie:mMovie];
    [mMovieView setNeedsDisplay:YES];
    [mMovieView play:self];
}

Any idea on how to make it work ?

Thank's in advance

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