2013-02-12 72 views
0

我目前在我的iOS應用程序中使用rtmpdump作爲C程序。但是,我似乎無需重新啓動應用程序就可以多次使用它。這可能是什麼原因,我該如何解決它?發佈C庫(使用ARC)

相關代碼:

NSDictionary *details = [args objectAtIndex:0]; //rtmpe deatils 
NSString *flvStore = [args objectAtIndex:1]; 
NSString *mp4Store = [args objectAtIndex:2]; 
[self performSelectorOnMainThread:@selector(updateProgressBar:) withObject:flvPath waitUntilDone:NO]; 
[self getFlashFile:details withFlvPathName:flvStore]; 

NSFileManager *fileManager = [NSFileManager defaultManager]; 
if([fileManager fileExistsAtPath:flvPath]){ 
    NSNumber *filesize = 0; 
    NSDictionary *fileAttributes = [[NSFileManager defaultManager] fileAttributesAtPath:flvPath traverseLink:NO]; 
    if(fileAttributes != nil){ 
     filesize = [fileAttributes objectForKey:NSFileSize]; 
    } 

    if([filesize longLongValue] > 1024){ 
     [self removeFlvWrapper:flvPath withMp4PathName:mp4Path andTitle:[thePid objectForKey:@"title"]]; 
    } 
    [fileManager removeItemAtPath:flvPath error:NULL]; 
} 

- (void)getFlashFile:(NSDictionary *)details withFlvPathName:(NSString *)flvPath { 
static char **rt_argv; 
static int rt_argc; 

rt_argc = 16; 
rt_argv = (char **)malloc(sizeof(char *) * (rt_argc)); 
rt_argv[0] = "rtmpdump"; 
rt_argv[1] = (char *)[@"-r" UTF8String]; 
rt_argv[2] = (char *)[[details objectForKey:@"r"] UTF8String]; 
rt_argv[3] = (char *)[@"-a" UTF8String]; 
rt_argv[4] = (char *)[[details objectForKey:@"a"] UTF8String]; 
rt_argv[5] = (char *)[@"-f" UTF8String]; 
rt_argv[6] = (char *)[@"WIN 10,0,32,18" UTF8String]; 
rt_argv[7] = (char *)[@"-W" UTF8String]; 
rt_argv[8] = (char *)[[details objectForKey:@"W"] UTF8String]; 
rt_argv[9] = (char *)[@"-p" UTF8String]; 
rt_argv[10] = (char *)[[details objectForKey:@"p"] UTF8String]; 
rt_argv[11] = (char *)[@"-y" UTF8String]; 
rt_argv[12] = (char *)[[details objectForKey:@"y"] UTF8String]; 
rt_argv[13] = (char *)[@"-o" UTF8String]; 
rt_argv[14] = (char *)[flvPath UTF8String]; 
rt_argv[15] = (char *)[@"-q" UTF8String]; 

getStream(rt_argc, rt_argv); 
finished = true; 
} 

您也可以看看BigBadOwl repository under iPlayerFetch.m看到類似的代碼。

+5

請勿再使用[[@「foo」UTF8String]'! C也有不變的字符串。 '「foo」'很好。 – 2013-02-12 18:05:22

+3

如果您嘗試做兩次會出現什麼問題?爲什麼你不能再次使用它? – 2013-02-12 18:16:32

+0

我不確定...這兩種方法都在一個名爲DMDownloader的獨立類中,每當用戶點擊一個表格單元格時都會創建它。我可以確認下載在用戶界面掛在getFlashFile上時可以正常工作。但是,第二次用戶單擊單元格時,UI不會掛起,臨時文件(flv)不會在臨時目錄中創建,因爲這是第一次。 – 2013-02-13 03:41:21

回答

0

我最終創建了Objective-C中rtmpdump的替代方案。代碼使用librtmp而不是rtmpdump,但是受到了rtmpdump的啓發。

謝謝!

+0

嗨達思,對於我需要開發一個即時rtmp轉換器的客戶端。我想使用NSPipe範例,但是我被avformat_open_input卡住了。你可以給我們更多關於如何爲rtmpdump編寫Objective-C替代方法的提示嗎? – valvoline 2013-11-03 10:35:11