Currently i am giving hard-coded path for saving the file, but need to open Dialog box to ask user's to get location to save the file on drive.
My Client Code is:
//Service1Client client = new Service1Client();
client.Open();
string s = client.GetData(5);
stream1 = client.GetFileStream("20101102.zip");
string filePath=#"c:\Test\";
outstream = File.Open(filePath, FileMode.Create, FileAccess.Write);
//CopyStream(stream1, outstream);
const int bufferLen = 10000000;
byte[] buffer = new byte[bufferLen];
int count = 0;
int bytecount = 0;
while ((count = stream1.Read(buffer, 0, bufferLen)) > 0)
{
outstream.Write(buffer, 0, count);
bytecount += count;
}
}
Please help me how can i achieve this functionality by some sample code.
Thanks in advance
What is the client? What is the problem with SaveFileDialog in WinForms or similar in other types of applications?
Related
I'm trying to write an app that will listen to my computer audio and transcribe it using Google Speach Recognition.
I've been able to record the system sound using WasapiLoopbackCapture and I've been able to use google streaming recognition api with test files, but I was not able to merge the two togther.
When I stream the audio from the WasapiLoopbackCapture to google it doesn't return any result.
I've based my code on the google code sample at:
https://github.com/GoogleCloudPlatform/dotnet-docs-samples/blob/9588cee6d96bfe484c8e189e9ac2f6eaa3c3b002/speech/api/Recognize/InfiniteStreaming.cs#L225
private WaveInEvent StartListening()
{
var waveIn = new WaveInEvent
{
DeviceNumber = 0,
WaveFormat = new WaveFormat(SampleRate, ChannelCount)
};
waveIn.DataAvailable += (sender, args) =>
_microphoneBuffer.Add(ByteString.CopyFrom(args.Buffer, 0, args.BytesRecorded));
waveIn.StartRecording();
return waveIn;
}
And adjusted it to use the WasapiLoopbackCapture:
private IDisposable StartListening()
{
var waveIn = new WasapiLoopbackCapture();
//var waveIn = new WaveInEvent
//{
// DeviceNumber = 0,
// WaveFormat = new WaveFormat(SampleRate, ChannelCount)
//};
SampleRate = waveIn.WaveFormat.SampleRate;
ChannelCount = waveIn.WaveFormat.Channels;
BytesPerSecond = SampleRate * ChannelCount * BytesPerSample;
Console.WriteLine(SampleRate);
Console.WriteLine(BytesPerSecond);
waveIn.DataAvailable += (sender, args) =>
_microphoneBuffer.Add(ByteString.CopyFrom(args.Buffer, 0, args.BytesRecorded));
waveIn.StartRecording();
return waveIn;
}
But it doesn't return any transcribed text.
I've saved the input stream to a file, and it played ok - so the sound is getting there, my guess is that the waveFormat that is received from the WasapiLoopback is not compatible with what google likes - I tried some conversion and couldn't get it to work.
I've reviewed the following topics on stack overflow, but still couldn't get it to work:
Resampling WasapiLoopbackCapture
Naudio - Convert 32 bit wav to 16 bit wav
And tried combining them both:
private IDisposable StartListening()
{
var waveIn = new WasapiLoopbackCapture();
//var waveIn = new WaveInEvent
//{
//DeviceNumber = 0,
//WaveFormat = new WaveFormat(SampleRate, ChannelCount)
//};
// SampleRate = waveIn.WaveFormat.SampleRate;
// ChannelCount = waveIn.WaveFormat.Channels;
// BytesPerSecond = waveIn.WaveFormat.AverageBytesPerSecond;// SampleRate * ChannelCount * BytesPerSample;
var target = new WaveFormat(SampleRate, 16, 1);
var writer = new WaveFileWriter(#"c:\temp\xx.wav", waveIn.WaveFormat);
Console.WriteLine(SampleRate);
Console.WriteLine(BytesPerSecond);
var stop = false;
waveIn.DataAvailable += (sender, args) =>
{
var a = args;
byte[] newArray16Bit = new byte[args.BytesRecorded / 2];
short two;
float value;
for (int i = 0, j = 0; i < args.BytesRecorded; i += 4, j += 2)
{
value = (BitConverter.ToSingle(args.Buffer, i));
two = (short)(value * short.MaxValue);
newArray16Bit[j] = (byte)(two & 0xFF);
newArray16Bit[j + 1] = (byte)((two >> 8) & 0xFF);
}
var resampleStream = new NAudio.Wave.Compression.AcmStream(new WaveFormat(waveIn.WaveFormat.SampleRate
,16,waveIn.WaveFormat.Channels), target);
Buffer.BlockCopy(newArray16Bit, 0, resampleStream.SourceBuffer, 0, a.BytesRecorded/2);
int sourceBytesConverted = 0;
var bytes = resampleStream.Convert(a.BytesRecorded/2, out sourceBytesConverted);
var converted = new byte[bytes];
Buffer.BlockCopy(resampleStream.DestBuffer, 9, converted,0, bytes);
a = new WaveInEventArgs(converted,bytes);
_microphoneBuffer.Add(ByteString.CopyFrom(a.Buffer, 0, a.BytesRecorded));
if (writer != null)
{
writer.Write(a.Buffer, 0, a.BytesRecorded);
if (writer.Position > waveIn.WaveFormat.AverageBytesPerSecond * 5)
{
stop = true;
writer.Dispose();
writer = null;
Console.WriteLine("Saved file");
}
}
};
waveIn.StartRecording();
return waveIn;
}
But it doesn't work.
I'm not sure if this is the right path.
A code sample of a fix would be highly appreciated
I tried converting the bit rate etc.. but couldn't get this to work.
I'm trying to upload files to an Azure fileshare using the library Azure.Storage.Files.Shares.
If I don't chunk the file (by making a single UploadRange call) it works fine, but for files over 4Mb I haven't been able to get the chunking working. The file is the same size when downloaded, but won't open in a viewer.
I can't set smaller HttpRanges on a large file as I get a 'request body is too large' error, so I'm splitting the filestream into multiple mini streams and uploading the entire HttpRange of each of these
ShareClient share = new ShareClient(Common.Settings.AppSettings.AzureStorageConnectionString, ShareName());
ShareDirectoryClient directory = share.GetDirectoryClient(directoryName);
ShareFileClient file = directory.GetFileClient(fileKey);
using(FileStream stream = fileInfo.OpenRead())
{
file.Create(stream.Length);
//file.UploadRange(new HttpRange(0, stream.Length), stream);
int blockSize = 128 * 1024;
BinaryReader reader = new BinaryReader(stream);
while(true)
{
byte[] buffer = reader.ReadBytes(blockSize);
if (buffer.Length == 0)
break;
MemoryStream uploadChunk = new MemoryStream();
uploadChunk.Write(buffer, 0, buffer.Length);
uploadChunk.Position = 0;
file.UploadRange(new HttpRange(0, uploadChunk.Length), uploadChunk);
}
reader.Close();
}
The code above uploads without error, but when downloading the image from Azure it is corrupt.
Does anyone have any ideas? Thanks for any help you can provide.
cheers
Steve
I was able to reproduce the issue. Basically the problem is with the following line of code:
new HttpRange(0, uploadChunk.Length)
Essentially you're always setting the content at the same range and that's why the file is getting corrupted.
Please try the code below. It should work. What I did here is defined the HTTP range offset and moving it constantly with number of bytes already written to the file.
using (FileStream stream = fileInfo.OpenRead())
{
file.Create(stream.Length);
//file.UploadRange(new HttpRange(0, stream.Length), stream);
int blockSize = 1 * 1024;
long offset = 0;//Define http range offset
BinaryReader reader = new BinaryReader(stream);
while (true)
{
byte[] buffer = reader.ReadBytes(blockSize);
if (buffer.Length == 0)
break;
MemoryStream uploadChunk = new MemoryStream();
uploadChunk.Write(buffer, 0, buffer.Length);
uploadChunk.Position = 0;
HttpRange httpRange = new HttpRange(offset, buffer.Length);
var resp = file.UploadRange(httpRange, uploadChunk);
offset += buffer.Length;//Shift the offset by number of bytes already written
}
reader.Close();
}
Please can you help me with me threading. I'm trying to download a file and at the same time update a BTProgressHUD progress display. I know that the reason that it's not working is to do with the download using the main thread and not allowing me to update the UI but I can't work out how to correctly use the thread pool to allow me to update the BTProgressHUD whilst the file is downloading. Please help!!
`
BTProgressHUD.Show("Downloading...", progress);
string this_file = "example.pdf";
string file_url = "http://our_server.com/files/" + this_file;
Uri url = new Uri(file_url);
var documents = Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments);
var folder = Path.Combine (documents, "", "PDF");
System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
response.Close();
Int64 iSize = response.ContentLength;
// keeps track of the total bytes downloaded so we can update the progress bar
Int64 iRunningByteTotal = 0;
// use the webclient object to download the file
using (System.Net.WebClient client = new System.Net.WebClient())
{
// open the file at the remote URL for reading
using (System.IO.Stream streamRemote = client.OpenRead(new Uri(file_url)))
{
// using the FileStream object, we can write the downloaded bytes to the file system
using (Stream streamLocal = new FileStream(folder + "/" + this_file, FileMode.Create, FileAccess.Write, FileShare.None))
{
// loop the stream and get the file into the byte buffer
int iByteSize = 0;
byte[] byteBuffer = new byte[iSize];
while ((iByteSize = streamRemote.Read(byteBuffer, 0, byteBuffer.Length)) > 0)
{
// write the bytes to the file system at the file path specified
streamLocal.Write(byteBuffer, 0, iByteSize);
iRunningByteTotal += iByteSize;
// calculate the progress out of a base "100"
double dIndex = (double)(iRunningByteTotal);
double dTotal = (double)byteBuffer.Length;
double dProgressPercentage = (dIndex / dTotal);
int iProgressPercentage = (int)(dProgressPercentage * 100);
if (iProgressPercentage == 100)
{
var z = new UIAlertView ("Download Complete", this_file + " downloaded.", null, "OK", null);
z.Show();
BTProgressHUD.Dismiss();
}
if (iProgressPercentage % 10 == 0)
{
// THIS BUT NEVER HAPPENS!!! Cannot update the progress display
progress += 0.1f;
BTProgressHUD.Show("XXX", progress);
}
} // while..
streamLocal.Close(); // clean up the file stream
} // using stream
streamRemote.Close(); // close the connection to the remote server
} // using I.O
} // using system.net
`
Any help would be very very much appreciated.
I have used the TPL to kick of a background thread then called back to the UI by using InvokeOnMainThread. I have substituted the BTProgressHUD for a UILabel but it should work the same. Here is it working:
private void DownloadCoffeePDF()
{
Task.Factory.StartNew (() => {
InvokeOnMainThread(() => {
this.TheLabel.Text = string.Format("Downloading...{0}", progress);
});
string file_url = "http://www.pnf.org/coffeeedited041001.pdf";
Uri url = new Uri(file_url);
var documents = Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments);
var folder = Path.Combine (documents, "", "PDF");
System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)request.GetResponse();
response.Close();
Int64 iSize = response.ContentLength;
// keeps track of the total bytes downloaded so we can update the progress bar
Int64 iRunningByteTotal = 0;
// use the webclient object to download the file
using (System.Net.WebClient client = new System.Net.WebClient())
{
// open the file at the remote URL for reading
using (System.IO.Stream streamRemote = client.OpenRead(new Uri(file_url)))
{
// using the FileStream object, we can write the downloaded bytes to the file system
using (Stream streamLocal = new FileStream(folder + "/" + "Coffee.pdf", FileMode.Create, FileAccess.Write, FileShare.None))
{
// loop the stream and get the file into the byte buffer
int iByteSize = 0;
byte[] byteBuffer = new byte[iSize];
while ((iByteSize = streamRemote.Read(byteBuffer, 0, byteBuffer.Length)) > 0)
{
// write the bytes to the file system at the file path specified
streamLocal.Write(byteBuffer, 0, iByteSize);
iRunningByteTotal += iByteSize;
// calculate the progress out of a base "100"
double dIndex = (double)(iRunningByteTotal);
double dTotal = (double)byteBuffer.Length;
double dProgressPercentage = (dIndex / dTotal);
int iProgressPercentage = (int)(dProgressPercentage * 100);
if (iProgressPercentage == 100)
{
InvokeOnMainThread(() => {
var z = new UIAlertView ("Download Complete", "Coffee.pdf" + " downloaded.", null, "OK", null);
z.Show();
this.TheLabel.Text = "Download Complete";
});
}
if (iProgressPercentage % 10 == 0)
{
InvokeOnMainThread(() => {
// THIS BUT NEVER HAPPENS!!! Cannot update the progress display
progress += 0.1f;
this.TheLabel.Text = string.Format("{0}", progress);
});
}
} // while..
streamLocal.Close(); // clean up the file stream
} // using stream
streamRemote.Close(); // close the connection to the remote server
} // using I.O
} // using system.net
});
}
I'm developing a rather simple visual WebPart for SharePoint Foundation Server 2010.
It's supposed to upload an image file to the SharePoint server and display it afterwards.
While I can successfully upload the file to a previously created document library, the file cannot be displayed (IE shows the red cross). When I upload an exact copy of the file using SharePoint frontend, it can be opened. I hope that someone can tell me what I'm missing.
Below you can find the code that successfully uploads a file to the server:
SPContext.Current.Web.AllowUnsafeUpdates = true;
string path = "";
string[] fileName = filePath.PostedFile.FileName.Split('\\');
int length = fileName.Length;
// get the name of file from path
string file = fileName[length - 1];
SPWeb web = SPContext.Current.Web;
SPFolderCollection folders = web.Folders;
SPFolder folder;
SPListCollection lists = web.Lists;
SPDocumentLibrary library;
SPList list = null;
Guid guid = Guid.Empty;
if (lists.Cast<SPList>().Any(l => string.Equals(l.Title, "SPUserAccountDetails-UserImages")))
{
list = lists["SPUserAccountDetails-UserImages"];
}
else
{
guid = lists.Add("SPUserAccountDetails-UserImages", "Enthält Mitarbeiter-Fotos", SPListTemplateType.DocumentLibrary);
list = web.Lists[guid];
}
library = (SPDocumentLibrary)list;
folder = library.RootFolder.SubFolders.Add("SPUserAccountDetails");
SPFileCollection files = folder.Files;
Stream fStream = filePath.PostedFile.InputStream;
byte[] MyData = new byte[fStream.Length];
Stream stream = new MemoryStream();
stream.Read(MyData, 0, (int)fStream.Length);
fStream.Close();
bool bolFileAdd = true;
for (int i = 0; i < files.Count; i++)
{
SPFile tempFile = files[i];
if (tempFile.Name == file)
{
folder.Files.Delete(file);
bolFileAdd = true;
break;
}
}
if (bolFileAdd)
{
SPFile f = files.Add(file, MyData);
f.Item["ContentTypeId"] = "image/jpeg";
f.Item["Title"] = file;
f.Item.SystemUpdate();
SPContext.Current.Web.AllowUnsafeUpdates = false;
imgPhoto.ImageUrl = (string)f.Item[SPBuiltInFieldId.EncodedAbsUrl];
}
Never mind. My code seems to mess with the file content. I'll post the solution later.
edit:
I'm stupid and sorry :-/
I replaced this:
Stream fStream = filePath.PostedFile.InputStream;
byte[] MyData = new byte[fStream.Length];
Stream stream = new MemoryStream();
stream.Read(MyData, 0, (int)fStream.Length);
fStream.Close();
with this:
Stream fStream = filePath.PostedFile.InputStream;
byte[] MyData = new byte[fStream.Length];
BinaryReader binaryReader = new BinaryReader(fStream);
MyData = binaryReader.ReadBytes((Int32)fStream.Length);
fStream.Close();
binaryReader.Close();
and suddenly it all worked ;-)
I'm running a multi thread image compressing process. The original file is 1280x
960 high resolution PNG file, about 1800KB. I need compress to <70KB JPEG file. When I process few vehicles, the process runs fine. when I process over 20 vehicles, I start to get out of memory error. Here is the code.
private static ImageCodecInfo GetEncoderInfo(String mimeType)
{
int j;
ImageCodecInfo[] encoders;
encoders = ImageCodecInfo.GetImageEncoders();
for (j = 0; j < encoders.Length; ++j)
{
if (encoders[j].MimeType == mimeType)
return encoders[j];
}
return null;
}
public static void SaveAsJpg(string inFilePath = null, string outputFileName = null, long compression = 70, long quality = 70)
{
System.Drawing.Image orgimage = System.Drawing.Image.FromFile(inFilePath);
var imgIn = new Bitmap(orgimage);
var imgOut = new Bitmap(imgIn.Width, imgIn.Height);
Graphics g = Graphics.FromImage(imgOut);
g.Clear(Color.White);
g.DrawImage(imgIn, 0, 0, imgIn.Width, imgIn.Height);
EncoderParameters encoding = new EncoderParameters(2);
encoding.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Compression, compression);
encoding.Param[1] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
ImageCodecInfo myImageCodecInfo = GetEncoderInfo("image/jpeg");
imgOut.Save(outputFileName, myImageCodecInfo, encoding);
}
Thanks in advance for any suggestion.
I think you need to dispose the graphic objects before leaving the method.
g.Dispose();
orgiImage.Dispose();
imgIn.Dispose();
imgOut.Dispose();
Disposing System.drawing objects