so far I have these using statements:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net;
using Newtonsoft.Json;
using System.Threading;
using NAudio.Wave;
using System.Diagnostics;
using System.Threading.Tasks;
using System.Runtime.InteropServices;
using Alvas.Audio;
I'm trying to write a wav to flac converter.
Here is the function:
public static void flac_converter()
{
string inputFile = Path.Combine("wav ", input);
string outputFile = Path.Combine("flac", Path.ChangeExtension(input, ".flac"));
if (!File.Exists(inputFile))
throw new ApplicationException("Input file " + inputFile + " cannot be found!");
WavReader wav = new WavReader(inputFile);
using (var flacStream = File.Create(outputFile))
{
FlacWriter flac = new FlacWriter(flacStream, wav.BitDepth, wav.Channels, wav.SampleRate);
// Buffer for 1 second's worth of audio data
byte[] buffer = new byte[wav.Bitrate / 8];
int bytesRead;
do
{
bytesRead = wav.InputStream.Read(buffer, 0, buffer.Length);
flac.Convert(buffer, 0, bytesRead);
} while (bytesRead > 0);
flac.Dispose();
flac = null;
}
}
But I get this error: "The Type of Namespace 'WavReader' cannot be found"
I also get this error: "The Type or Namespace 'FlacWriter' cannot be found"
I know I have to do two things, download the appropriate lib, then all teh DLL files to the reference of the project and also add "using blahBlah;"
However, I don't know what DLL i need, or what using statements I need to get rid of these errors. Anyone know?
change the spelling of wavreader to wavereader. It should work out.
Related
I'm currently facing an issue with using fileInfo and fileStream related codes in my Xamarin PCL Project as Visual Studio will give an error saying that the type or namespace name 'FileInfo' could not be found.
I have already included the using System; and using system.IO statements in the code but it is still not working.
using System;
using System.IO;
using IPShare.Models;
using IPShare.ViewModels;
using Xamarin.Forms;
using System.Net;
using System.Resources;
using System.Text;
using System.Threading.Tasks;
using PCLStorage;
using System.Net.Http;
namespace IPShare.Views
{
public partial class ItemsPage : ContentPage
{
ItemsViewModel viewModel;
private async void OnButtonClicked(object sender, EventArgs e)
{
// Load file meta data with FileInfo
FileInfo fileInfo = new FileInfo(path);
// The byte[] to save the data in
byte[] data = new byte[fileInfo.Length];
// Load a filestream and put its content into the byte[]
using (FileStream fs = fileInfo.OpenRead())
{
fs.Read(data, 0, data.Length);
}
// Delete the temporary file
fileInfo.Delete();
}
}
}
As I'm new to xamarin and C# any help would be greatly appreciated.
The the forum thread linked to below says that FileInfo class is not available in PCL's (It's dated 2013, so this may be outdated).
How to use System.IO.File or similar for cross platform projects in PCLs?
Having real problems with writing to a text file using following code
using HCP1.Common;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.UI.Xaml.Media.Imaging;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.Storage;
using System.Threading.Tasks;
using System.Text;
using System.Diagnostics;
private void imageview_DoubleTapped(object sender, DoubleTappedRoutedEventArgs e)
{
var point = e.GetPosition(imageview);
var p1 = (int)point.X;
var p2 = (int)point.Y;
string stringVal1;
string stringVal2;
stringVal1 = System.Convert.ToString(p1);
stringVal2 = System.Convert.ToString(p2);
Text3.Text = stringVal1;
Text4.Text = stringVal2;
if (p2 > 210 && p2 < 235 && p1 > 339 && p1 < 367) {
string dave = Environment.NewLine + Text3.Text + "," + Text4.Text;
string path = #"C:\myfile.txt";
StreamWriter sw = new StreamWriter(path);
string bufferOne = dave;
sw.Write(bufferOne);
sw.Close();
sw.Dispose();
};
}
When a double tap is done it should save the contents of a textblock to a file but I have three errors
The best overloaded method match for 'System.IO.StreamWriter.StreamWriter(System.IO.Stream)' has some invalid arguments (This is at the Streamwriter Line)
cannot convert from 'string' to 'System.IO.Stream' (At the same line)
'System.IO.StreamWriter' does not contain a definition for 'Close' and no extension method 'Close' accepting a first argument of type 'System.IO.StreamWriter' could be found (are you missing a using directive or an assembly reference?) (This is at the Close line)
As you can see I have SYstem.io reference
Any ideas where im going wrong?
Any help appreciated
Mark
Use File.WriteAllText. It's a static method and does the same as opening, writing and closing a file. Remember, the less code the less bugs.
if (p2 > 210 && p2 < 235 && p1 > 339 && p1 < 367)
{
string dave = Environment.NewLine + Text3.Text + "," + Text4.Text;
File.WriteAllText(#"C:\myfile.txt", dave);
}
Referring to this question, I have used the code from it: Play audio from a stream using C#
However, I get an error "Object reference not set to an instance of an object" running in debug. I have assigned Url's to a combo box, and when I choose the first choice, opening an ASX stream, the program crashes, giving me the above in debugger.
Any ideas? I have tried doing some fixing with the code below, but I don't think I'm getting the idea, since it still isn't working.
Edit:// It doesn't recognize Mp3FileReader however there are no errors/warnings, it isn't green as it normally would be, am I missing a library?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using NAudio.Wave;
using NAudio;
public static void PlayMp3FromUrl(string url)
{
using (Stream ms = new MemoryStream())
{
using (Stream stream = WebRequest.Create(url).GetResponse().GetResponseStream())
{
byte[] buffer = new byte[32768];
int read;
while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
{
ms.Write(buffer, 0, read);
}
}
ms.Position = 0;
Mp3FileReader fr = new Mp3FileReader(ms);
WaveStream blockAlignedStream = new BlockAlignReductionStream(WaveFormatConversionStream.CreatePcmStream(fr));
if(ms != null)
{
using (WaveOut waveOut = new WaveOut(WaveCallbackInfo.FunctionCallback()))
{
waveOut.Init(blockAlignedStream);
waveOut.Play();
while (waveOut.PlaybackState == PlaybackState.Playing)
{
System.Threading.Thread.Sleep(100);
}
}
}
else
{
MessageBox.Show("blockAlignedStream variable was null!");
}
}
}
The code sample you are using is not a good example of how to play an MP3 from a stream. There are multiple problems with the code. Either use the technique described in this article, or you may be able to make use of the new MediaFoundationReader which can play from a URL.
I am looking for some library to read/write IPTC metadata from Jpg files.
Open source or paid, doesn't matter.
It should work with .NET 3.5 and c#.
Does anybody know such a library? I googled but haven't found anything.
*http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.aspx
using System;
using System.IO;
using System.Linq;
using System.Windows.Media.Imaging;
namespace wictest
{
class Program
{
static void Main(string[] args)
{
var stream = new FileStream("1.jpg", FileMode.Open, FileAccess.Read);
var decoder = new JpegBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.None);
var metadata = decoder.Frames[0].Metadata as BitmapMetadata;
if(metadata != null)
Console.WriteLine(metadata.Keywords.Aggregate((old, val) => old + "; " + val));
Console.ReadLine();
}
}
}
You need to reference PresentationCore.dll and WindowsBase.dll to get access to the System.Windows.Media namespace.
I have a few reports that are exported to Excel. The problem is whereever there are special characters, it is being replaced by some funny symbols
For example, '-'(hyphen) was replaced by –...
Any help to solve the problem??
The most straight forward way is to encode the text file as UTF-8. I ran the following code, opened the resulting hyphen.txt file in Excel 2007 and it worked as expected:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
var hyphen = "\u2010\r\n";
var encoding = Encoding.UTF8;
var bytes = encoding.GetBytes(hyphen);
using (var stream = new System.IO.FileStream(#"c:\tmp\hyphen.txt", System.IO.FileMode.Create, System.IO.FileAccess.ReadWrite))
{
stream.Write(bytes, 0, bytes.Length);
}
}
}
}
This is the code -- view at PasteBin.