I want to play an audio file from my isolated storage.. but I don't want to play from the beginning.. I want to play the audio file at 33seconds position.. How can I do this? Any function to define?
I have this method to open:
private void Play_Audio(string name_file)
{
using (var isf = IsolatedStorageFile.GetUserStoreForApplication())
{
if (isf.FileExists(name_file))
{
using (var isoStream = isf.OpenFile(name_file, FileMode.Open, FileAccess.Read))
{
mediaSound.SetSource(isoStream);
mediaSound.Volume = 100;
mediaSound.Play();
mediaSound.Stop();
isoStream.Close();
}
}
else
{
//MessageBox.Show("The file does not exist");
}
}
}
There's nothing like mediaSound.PlayAtPosition(33)??????????
Show me an example;)
You can set the position to play at using the Position property.
Please note that not all sources support being able to be played at a specific point so make sure you check support for this feature using the CanSeek property.
Related
im searching for a good imaging SDK for windows phone ...
i tried to use Nokia SDK but it didn't work for me, it keeps showing as exception:
"Operation Is Not Valid Due To The Current State Of The Object."
here is my test code:
The processImage method is used to apply the filter on the image.
private async void processImage()
{
WriteableBitmap writeableBitmap = new WriteableBitmap((int)bitmapImage.PixelWidth, (int)bitmapImage.PixelHeight);
try
{
using (var imageStream = new StreamImageSource(photoStream))
{
// Applying the custom filter effect to the image stream
using (var customEffect = new NegateFilter(imageStream))
{
// Rendering the resulting image to a WriteableBitmap
using (var renderer = new WriteableBitmapRenderer(customEffect, writeableBitmap))
{
// Applying the WriteableBitmap to our xaml image control
await renderer.RenderAsync();
imageGrid.Source = writeableBitmap;
}
}
}
}
catch (Exception exc) { MessageBox.Show(exc.Message + exc.StackTrace, exc.Source, MessageBoxButton.OK); }
}
This is the NegateFilter class:
namespace ImagingTest
{
class NegateFilter : CustomEffectBase
{
public NegateFilter(IImageProvider source) : base(source){}
protected override void OnProcess(PixelRegion sourcePixelRegion, PixelRegion targetPixelRegion)
{
sourcePixelRegion.ForEachRow((index, width, pos) =>
{
for (int x = 0; x < width; ++x, ++index)
{
targetPixelRegion.ImagePixels[index] = 255 - sourcePixelRegion.ImagePixels[index];
}
});
}
}
}
any ideas for a good imaging SDK? like ImageJ on java for example, or OpenCV ..
i will be better to use Nokia SDK ..
thx :)
I looked in to you code and did a quick test.
The code worked fine when I just made sure that the bitmapImage.PixelWidth and bitmapImage.PixelHeight > 0.
I did not get and image on the screen but when I remove your custom filter the image is show.
I hope you will continue to use the SDK since it is a great product.
What about emguCV?
I am not try it yet but looks like it's possible with phone's camera.
This may sound very simple but I've lost a lot of time looking for answer
In my Windows phone 8 app I use the PhotoChooserTask to let the user choose the photo, and i get the path of the photo by using
string FileName = e.OriginalFileName;
where e is the PhotoResult argument of the Task. , let's say: FileName=
"C:\Data\SharedData\Comms\Unistore\data\18\k\2000000a00000018700b.dat" (selected from the cloud) or
"D:\Pictures\Camera Roll\WP_20140110_10_40_42_1_Smart.jpg" (from camera roll)
I want to save that string path and open it up and show the image again when the users reopen the app. But I cannot find a method to convert those string into Image data (BitmapImage or Stream)
Any idea?
private void PhotoChooserTaskCompleted(object sender, PhotoResult e)
{
if (e.TaskResult == TaskResult.OK)
{
var image = new BitmapImage();
image.SetSource(e.ChosenPhoto);
SaveImageAsync(image);
}
}
public async void SaveImageAsync(BitmapImage image)
{
await Task.Run(SaveImage(image));
}
public async Task SaveImage(BitmapImage image)
{
IStorageFolder folder = await ApplicationData.Current.LocalFolder
.CreateFolderAsync("Images", CreationCollisionOption.OpenIfExists);
IStorageFile file = await folder.CreateFileAsync(
imageFileName, CreationCollisionOption.ReplaceExisting);
using (Stream stream = await file.OpenStreamForWriteAsync())
{
var wrBitmap = new WriteableBitmap(image);
wrBitmap.SaveJpeg(stream, image.PixelWidth, image.PixelHeight, 100, 100);
}
}
At Windows Phone 8.1 you can try "StorageFolder.GetFolderFromPathAsync" static method (if this API is available at your app flavor) and then get a stream for a necessary file from that folder.
How to create a timer for c# windows phone 7?
I already find a timer, but it was for normal c#, and on C# for windows phone we can´t use system.Timers!I want to play the video just from 5000ms.
This is my code:
using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
IsolatedStorageFileStream isoFileStream = myIsolatedStorage.OpenFile("xml_file.xml", FileMode.Open);
XElement xml = XElement.Load(isoFileStream);
foreach (XElement node2 in xml.Element("graphics").Elements("file"))
{
string url_graficos = node2.Element("fileurl").Value;
string[] array = url_graficos.Split('/');
string[,] resultadosImage = { { node2.Element("fileurl").Value, node2.Element("playtime").Value, node2.Element("transition").Value } };
mediaSound.Play();
mediaSound.Stop();
The class you are looking for is a DispatcherTimer. Here is a good tutorial on how to use it.
Hope this helps you.
I have a Mango WP7.5 app that uses a local SqlCe database. I would like to add a LiveTile update that shows info taken from the local DB based on current day and month.
All the samples that I've found update the background by downloading remote images from servers but I would simply need to make a local database query and show a string in my tile.
Can I do it? How?
Yes, you can. You have to
generate an image containing your textual information
save this image to isolated storage and
access it via isostore URI.
Here is code showing how to do this (it updates the Application Tile):
// set properties of the Application Tile
private void button1_Click(object sender, RoutedEventArgs e)
{
// Application Tile is always the first Tile, even if it is not pinned to Start
ShellTile TileToFind = ShellTile.ActiveTiles.First();
// Application Tile should always be found
if (TileToFind != null)
{
// create bitmap to write text to
WriteableBitmap wbmp = new WriteableBitmap(173, 173);
TextBlock text = new TextBlock() { FontSize = (double)Resources["PhoneFontSizeExtraLarge"], Foreground = new SolidColorBrush(Colors.White) };
// your text from database goes here:
text.Text = "Hello\nWorld";
wbmp.Render(text, new TranslateTransform() { Y = 20 });
wbmp.Invalidate();
// save image to isolated storage
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
// use of "/Shared/ShellContent/" folder is mandatory!
using (IsolatedStorageFileStream imageStream = new IsolatedStorageFileStream("/Shared/ShellContent/MyImage.jpg", System.IO.FileMode.Create, isf))
{
wbmp.SaveJpeg(imageStream, wbmp.PixelWidth, wbmp.PixelHeight, 0, 100);
}
}
StandardTileData NewTileData = new StandardTileData
{
Title = "Title",
// reference saved image via isostore URI
BackgroundImage = new Uri("isostore:/Shared/ShellContent/MyImage.jpg", UriKind.Absolute),
};
// update the Application Tile
TileToFind.Update(NewTileData);
}
}
I need to record different sounds in a file. the file may be .mp3, .wav etc. how it is possible in windows phone 7?
There is a simple way to do this in Windows Phone. You are basically using the Microphone class provided by the framework. For a great article on the topic go to http://msdn.microsoft.com/en-us/magazine/gg598930.aspx
void OnRecordButtonClick(object sender, RoutedEventArgs args)
{
if (microphone.State == MicrophoneState.Stopped)
{
// Clear the collection for storing buffers
memoBufferCollection.Clear();
// Stop any playback in progress (not really necessary, but polite I guess)
playback.Stop();
// Start recording
microphone.Start();
}
else
{
StopRecording();
}
// Update the record button
bool isRecording = microphone.State == MicrophoneState.Started;
UpdateRecordButton(isRecording);
}
void StopRecording()
{
// Get the last partial buffer
int sampleSize = microphone.GetSampleSizeInBytes(microphone.BufferDuration);
byte[] extraBuffer = new byte[sampleSize];
int extraBytes = microphone.GetData(extraBuffer);
// Stop recording
microphone.Stop();
// Create MemoInfo object and add at top of collection
int totalSize = memoBufferCollection.Count * sampleSize + extraBytes;
TimeSpan duration = microphone.GetSampleDuration(totalSize);
MemoInfo memoInfo = new MemoInfo(DateTime.UtcNow, totalSize, duration);
memoFiles.Insert(0, memoInfo);
// Save data in isolated storage
using (IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForApplication())
{
using (IsolatedStorageFileStream stream = storage.CreateFile(memoInfo.FileName))
{
// Write buffers from collection
foreach (byte[] buffer in memoBufferCollection)
stream.Write(buffer, 0, buffer.Length);
// Write partial buffer
stream.Write(extraBuffer, 0, extraBytes);
}
}
// Scroll to show new MemoInfo item
memosListBox.UpdateLayout();
memosListBox.ScrollIntoView(memoInfo);
}