I'm playing an audio file like so:
VB.NET Dim audio As New Audio(Application.StartupPath & "est.wav", True) audio.Balance = 10000 audio.Play()
Which works great. But if I need to change that file, I get an UnauthorizedException because the I haven't disposed of it. But, if I add a dispose after .Play, it won't play.
So I have a wav playing using DirectX in VB6. If i switch to another window, it stops playing. If I click back on the VB6 window it resumes play. How do I make it continue playing when I change windows? Another problem I cannot load wav files larger than 50 megabyte. It says Out Of Memory. How can I increase that?
View 1 RepliesI have scoured just about every code sample on the web, and am still having trouble. Basically my code follows the following structure:
I installed the DirectX SDK, and imported AudioVideoPlayback Imports Microsoft.Directx.AudioVideoPlayback '''
Then I create my VideoPlayer Public WithEvents VideoPlayer as Video So far so good, I have event handlers and a video object
Then:
[CODE]...........
I execute the above subroutine and the video plays flawlessly
[CODE]............
The above code works perfectly as well
Then I try to execute the PlayVideo sub to play another file and I get a generic "Object reference not set to an instance of an object" error, that does not point to any particular line of code. It took me forever to find out exactly what line of code was causing this. So I came up with a workaround:
In the PlayVideo sub I changed the code to this
[CODE]..............
And there it is, the second video played without error. but then I noticed something, after the second video ended the .Ending event handler did not fire, actually all the event handlers basically died. So someone told me to use a timer to monitor when the video ends, and I basically laughed it off since we know that's an amateur move. After being frustrated for a while, I caved in and used the timer to do my dirty work, which I really don't like.
Now there's another problem, after I play a video in my project, DirectX is not screwed up for other programs until I restart my computer. Particularly I have a visualization plugin for Windows Media Player called Gforce. After I play a video, Gforce will not work, it gives me an "Error=18" which means that my computer does not have sufficient hardware to use it. The only way to be able to clear it up is to restart my computer.
Here are my specs:
Intel 3.0ghz Dual Core processor
Nvidia Geforce 9800GT with 1GB ram
4 GM Ram
Windows 7 64-bit version (build 7100)
Programming in Visual Studio 2008 Professional (using Visual Basic code)
I originally attempted to use the AxWindowsMediaPlayer control, but I am unable to. According to Microsoft there is a bug that prevents me from using it. When I pull up the choose items dialog box it does not show up, if I browse to wmp.dll to manually add it, I get an error ("self-registration for c:windowssystem32wmp.dll failed"). I also read that you should try to add the wmp.ocx instead of wmp.dll, but I am at a loss on this since I am pretty sure that file does not exist. I am trying to put together a new media player program for my theater pc and this video thing is putting me to a standstill. I am a highly experienced vb programmer (over 20 years), but I am not very experienced in DirectX. I have read a lot of code samples on video playback but they all give me tons of problems, so I hate to say it but i think that most of these samples were written by people who don't know what they are doing.
Is it possible to stream more than two sounds simultaneously in .NET without using DirectX?
To obtain foreground and background effects I currently use the following:
' Background music
Private bkMusic As New SoundPlayer(My.Resources.bkm)
[CODE]..................
SoundPlayer is a wrap around to the win32 API:
Private Declare Function sndPlaySound Lib "winmm.dll" Alias "sndPlaySoundA" (ByVal lpszSoundName As String, ByVal uFlags As Long) As Long
While for actual in game sound effects I am using a class that implements:
Private Declare Function mciSendString Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpszCommand As String, ByVal lpszReturnString As String, ByVal cchReturnLength As Long, ByVal hwndCallback As Long) As Long
It works. 1 snd effect at a time overlapping / mixing with the background music. But I am on the hunt for a better method which allows me to stream multiple snd effects simultaneously. DirectX is not an option, because most people (my audience) don't have the SDK (software development kit)
i need Help to make Audio or Video Player With Using DirectX. how many Different b/w DirectX and Windows Media Player???
View 8 RepliesI've been fighting for weeks now to make a simple music playback program. It would function much like Windows Media Player without the visualisations and playlists. I'm writing this on a Win7 box, but it needs to work on XP and newer.
I say fighting because I'm severely annoyed at how MS has worked some items and it's taken many days to go through everything only to find that it doesn't work.
I started by using WMP in VB Express 2010 and having it play my music. Simple, but not portable. I copied my .exe to a WinXP machine and it blew up. I copied it to a different Win7 machine and it doesn't run (I can double-slick all day, nothing happens,
no log entries, nothing....)
Then I find that there is an issue with the GUID of media player on different computers, and it'll most likely fail to run when you try to use it on other machines than the one the program was built on.
So I gave up on that.
I then figured I'd use DirectX. It's on XP and newer already, and is supposed to be backwards compatibile so if I build my app on Win7 it should still run on XP and such. I did that, and it works fine on the machine I built it with (again). My shuffle works,loop/repeat works, got my own version of a playlist and it all works. I copy that to another Win7 box and it doesn't run at all. It's setup as .NET 3 so I can be sure of compatibilty with WinXP.
For grins, I gutted all the code in my VB app involving calls to Directx and built that. It runs fine on other computers, including my XP test box. So I know the problem revolves around DirectX somehow.[code]...
I embeded many audio file (.wav) in resources. I can inluded the following code to play a audio file My.Computer.Audio.Play(My.Resources.testWav, AudioPlayMode.Background)
But this command play only one audio file(testWav) I have two questions
1) Is there any way to play all audio files no matter how many files in Resources included in VB 2005 without typing all embeded audio file name? (using something like For Next statement)
2) Can I pass parameter to My.Computer.Audio.Play( , ), which means that when I choose one of files embeded in Resource, I just pass the chosen audio file to this command not specific file name(like testWav.wav)
I'm new to VB and have over the last week or two been looking at the different ways to play audio (mp3's). Windows Media Player, Microsoft Multimedia Control, Bass.dll, SndPlaySound, MCI SendString and DirectX (including audiovideoplayback, direct3d and directsound.) I originally decided to use windows mediaplayer, mainly because it seemed the logical choice but quickly found out I couldn't get it to work properly.
So I installed the Directx SDK but now I'm completely overwhelmed about what to use and why. I need to be able run the compiled code on a win 2k box, play an mp3 from start to finish then load and play another mp3 from start to finish and so on. Whats the difference between the varied choices and which would be the best for me to use?
Based on a thread earlier today, and in particular an answer that Cor gave wherein he
pointed to this article, I thought that I'd do some investigation. Many times here the question has come up about playing .mp3 audio files and NOT using the Windows Media Player object. In the article referenced above, he shows how this can be done via DirectX.
I've looked at DirectX before and it seemed ambiguous so I never really dug into it but it turns out to be pretty simple actually! I thought that I'd write this as a step-by-step of what I did so that maybe some of you will find use from it. The whole thing stems around using DirectX and to begin with, you'll need to download and install the SDK for it. If you haven't already,
try this link. Do be aware that it's a large download (about a half gig)! Once that's installed, create a form and add a reference to the class that we need for this. You can do this several ways, but the way I usually do is to right-click on the name in the Solution Explorer, then choose "Add Reference":
[Code]...
my program is designed to run on windows7. the mixer in the taskbar lets you control volumes per application. is their a way to determin if a specific application is playing a sound? if not, how would i go about checking to see if the system is currently outputting anysound.
my app is currently setup to use a speech to text and text to speech. basicly i want it to be able to wait for the text to speach software to stop talking before my app plays internal sounds (using the My.Computer.Audio.Play)
i don't have any code to provide as i have no idea where to start.
I am developing a video player with WPF.(in VB)I have already created a MediaElement ,ListBox, "Next" button, then start playing through reading ListBox,and use "Next" to skip to next audio/video.In "MediaEnded" event, i just copy all code in "Next" button.Now, problem is coming,
Assume the Listbox has four audios(.mp3), "test1.mp3", "test2.mp3", ......
now playing is "test1.mp3", i push "Next" button, then now playing is "test2.mp3".
However, when i just let "test1.mp3" play completed, my player will not play "test2.mp3",
[code].....
I am working on an application in VB.net (.NET 2.0) where I need to open a dynamic amount of different audio streams. Normally, for audio files, one would suggest importing the Windows Media Player COM reference and adding a GUI-based element from the toolbox, but since I'll be working with a dynamic amount of these a GUI would be a terrible idea (especially with Tab stops).
View 4 RepliesI want to create a audio player class but having some problems like when audio is finished it is not repeating. While playing audio some UI controls are not working.
View 1 RepliesRight now I'm trying to make an alarm clock program.I know my coding is correct and I'm not geting errors. Also my sound is a .Wav and was properly inserted into the resources folder. I was wondering if there is just some dumb setting that needs to be changed or if I'm forgeting something in the code.[code]...
View 4 Replies[code]So basically the combobox1 item which is selected is sent to a string and is then supposed to be played from my resources. The .wav file which is in my resources is named "Sound1" however I have no idea how to reference it.
View 1 RepliesI want to do a software for blind user. How to play audio while menustrip submenu item highlight (without using mouse hover)?
View 1 RepliesI'm working on a program that allows a person to click on some text and it will read the text (play a wav file) using My.Computer.Audio.Play. The program calls a procedure called PlayAudioClip which uses AudioPlayMode.WaitToComplete because in some cases two wav files will be played one after the other(two languages). During the playing of the wav files I want to show a visible indicator that there is audio. I've got a picturebox called "AudioPic" who's image property points to a picture in my.resources. THe visible property of AudioPic is set to false when the form loads When the user clicks on the text my program should display the image (Visible=true), play the clip (or two) and then hide it again.
It seems that the picture is not completely loaded before the wav file plays and since I have it set to WaitToComplete it stops the loading until the wav file has played, at which time the program hides it.
How can I force it to finish showing the picture before playing the clip?[code]...
I am creating a windows service that will do things behind the scenes without any GUI needed, thus the need for a Windows Service. The problem is though I would like to notify the user when certain events happen by playing a short audio clip. I know Windows Service's create a virtual Desktop, in which, Audio messages are not sent to the users Desktop.
View 3 Replies[code] I am programming a simple alarm clock and the loop never ends the clock stops counting seconds, and I can not click any button as the form seems to be frozen
View 2 RepliesI'm developing a standslone system for my school project. I'm developing an audio management system which allow user to add audio files itself into database together with the audio information such as artist name and album year. I just started it few days ago and face some problems.. my song in the playlist wont continue to play after 1 finished and i need some idea on how to store the audio files into database ... in blob types may be?
Heres the screenshot and codes
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bt_add.Click
[CODE]............................
From code analysis (Visual studio), I got this warning:
[Code]...
The warning disappear but then the literal control isn't anymore being displayed on the page... EDIT Note that the code come from a Microsoft web page: [URL]
I have following code (obtained from online tutorial). The code is working but I suspect the way to dispose the Excel com object is somewhat not proper. Do we need really need to call GC.Collect? Or what is the best way to dispose this Excel com object?
Public Sub t1()
Dim oExcel As New Excel.Application
Dim oBook As Excel.Workbook = oExcel.Workbooks.Open(TextBox2.Text)[code]............
I have a custom settings file that I designed using the designer. In my form, I have a function that creates a new instance of this settings by using a dim statement. Then I add this new settings object to a hashtable. After I exit this function, I no longer have access to the settings object without using the hashtable to retrieve it. If I want to remove the object from the hashtable, I can do a simple remove but the settings object still exists somewhere in memory. How can I dispose of this object as well since it inherits from ApplicationSettingsBase and does not have a built in Dispose() function?
View 5 RepliesIs there any sense to set custom object to null(Nothing in VB.NET) in the Dispose() method?Could this prevent memory leaks or it's useless?!Let's consider two examples:
public class Foo : IDisposable
{
private Bar bar; // standard custom .NET object
public Foo(Bar bar) {
[code]....
I am getting the following Exception when calling MyBase.Dispose ()ObjectDisposedException was unhandled.I tried adding a Try Catch around the call but it doesn't catch the exception.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
[code]....
FYI: The value of disposing is False
I looked at the Dispose() method in System.Data.SqlClient.SqlTransaction (using a decompiler):
[Code]....
Why does everyone say in forums that it is Rolling back in the dispose? Where does it rollback?
I have recently created an application to play videos using theAxWindowsMediaPlayer object. I was able to set good part of the controls but I'm still struggling with the audio track functionality. In order words, I was not able to find a method or even a property that allows me to select which audio track should play with the movie. If the movie has more than one, the audio tracks are played all together when the play method is executed.
View 3 RepliesIf I try to copy/paste simple tutorials such as [URL], Visual Studio freezes indefinitely and I have to force-close it. If I try to use code like the stuff found here
[URL] or even just load up Reed Kimble's XArcade Vengance from this forum, I get this error message:
An error occurred creating the form. See Exception.InnerException for details. The error is: Could not load file or assembly 'Microsoft.DirectX.Direct3D.dll' or one of its dependencies. is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)
[Code]...
a WindowsForm application and I need a code to check target's machine installed version of DirectX.If the reg key doesn't match with provided one >>> load the form and launch the DX installer "redistdirectx_Jun2010_redistDXSETUP.exe"If the reg key matches with the provided one >>> launch other application "Setup.exe"
View 6 RepliesWhen I try to play an audio file through DirectX, that isn't my development machine, I receive this error.
The DirectX library I'm using is Microsoft.DirectX.AudioVideoPlayback.dll.
I include the library when I build the application and I thought that would work. Both PCs have the same version of DirectX installed. So what else do I need to install?
The app itself is meant to run on a USB, so I can't install it, but I'm able to install 3rd party libraries during the initial load.