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  • Syncing FFMPEG with a named pipe

    - by blez
    I'm using the ffmpeg.exe for converting with a named pipe for an input. But the problem is that I put too fast data thru the pipe and the result is a small file. How to determine is FFMPEG converted the current chunk?

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  • Async BinaryWriter ?

    - by blez
    I found implementation of async BinaryWriter here: http://social.msdn.microsoft.com/Forums/en-US/netfxbcl/thread/11f6aa76-1383-4cab-8693-29dcb25bbf2e But I can't really use it. I change all my types to AsyncBinaryWriter and I use .Write, but no data is written to the stream. Is that the proper way for using it ?

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  • Stream writing lags my GUI

    - by blez
    I have a thread that dequeues data from a queue and write it to another application's STDIN. I'm using Stream, but with .Write and even .BeginWrite, when I send 1mb chunks to the second app, my GUI gets laggy for ~1sec. Why?

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  • VB6's private static in C# ?

    - by blez
    In VB6 there are local static variables that keep their values after the exit of procedure. It's like using public vars but on local block. For example: sub count() static x as integer x = x + 1 end sub After 10 calls, x will be 10. I tried to search the same thing in .NET (and even Java) but there was none. Why? Does it break the OOP model in some way, and is there a way to emulate that.

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  • How to write to stdin of another app?

    - by blez
    I have a module that reads StandartError of a process, all works fine, but I want to do something different. I don't know how redirect stdin like the native way: app1.exe -someargs | app2.exe -someargs Where app2 reads all the stdout of app1 in its stdin.

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  • How to prevent duplicates, macro or something?

    - by blez
    Well, the problem is that I've got a lot of code like this for each event passed to the GUI, how can I shortify this? Macros wont do the work I guess. Is there a more generic way to do something like a 'template' ? private delegate void DownloadProgressDelegate(object sender, DownloaderProgressArgs e); void DownloadProgress(object sender, DownloaderProgressArgs e) { if (this.InvokeRequired) { this.BeginInvoke(new DownloadProgressDelegate(DownloadProgress), new object[] { sender, e }); return; } label2.Text = d.speedOutput.ToString(); } private delegate void DownloadSpeedDelegate(object sender, DownloaderProgressArgs e); void DownloadSpeed(object sender, DownloaderProgressArgs e) { if (this.InvokeRequired) { this.BeginInvoke(new DownloadSpeedDelegate(DownloadSpeed), new object[] { sender, e }); return; } string speed = ""; speed = (e.DownloadSpeed / 1024).ToString() + "kb/s"; label3.Text = speed; }

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  • Multi-threaded downloader in C# question

    - by blez
    Currently I have multi-threaded downloader class that uses HttpWebRequest/Response. All works fine, it's super fast, BUT.. the problem is that the data needs to be streamed while it's downloading to another app. That means that it must be streamed in the right order, the first chunk first, and then the next in the queue. Currently my downloader class is sync and Download() returns byte[]. In my async multi-threaded class I make for example, list with 4 empty elements (for slots) and I pass each index of the slot to each thread using the Download() function. That simulates synchronization, but that's not what I need. How should I do the queue thing, to make sure the data is streamed as soon as the first chunk start downloading.

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  • Async stream writing in a thread

    - by blez
    I have a thread in which I write to 2 streams. The problem is that the thread is blocked until the first one finishes writing (until all data is transferred on the other side of the pipe), and I don't want that. Is there a way to make it asynchronous? chunkOutput is a Dictionary filled with data from multiple threads, so the faster checking for existing keys is, the faster the pipe will write. void ConsumerMethod(object totalChunks) { while(true) { if (chunkOutput.ContainsKey(curChunk)) { if (outputStream != null && chunkOutput[curChunk].Length > 0) { outputStream.Write(chunkOutput[curChunk]); // <-- here it stops } ChunkDownloader.AppendData("outfile.dat", chunkOutput[curChunk], chunkOutput[curChunk].Length); curChunk++; if (curChunk >= (int) totalChunks) return; } Thread.Sleep(10); } }

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  • Raising event on reading file?

    - by blez
    I have external app reading files, I want to hook that to get event in my app. But I cannot find a sources hooking ReadFile (or something else that can help me achieve that). Any ideas how to do that? It must be done in User-Mode. I was thinking for something similar to Process Monitor. I wonder how it does it..

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  • Threads in C# [Question]

    - by blez
    Thread1/2: do TotalThreads-- on their exit int TotalThreads = 2; void AsyncFunc() { // run thread for Func() } void Func() { // run Thread1 // run Thread2 while(TotalThreads > 0) { /* do nothing */ } // some code } is that bad design?

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