Audio Playback (WinCE)

Overview

This article demonstrates how audio can be played using program in C and C#.

Audio Playback in C

Using Waveform Audio Functions

• Waveform Audio Functions (WAF) can only play waveform (or uncompressed) files. For more information see MSDN.
• Demo project can be downloaded here.
• To build the project, navigate to Build menu in Visual studio and click Build Solution.
  • If the project does not build, go to
      Project Settings → Configuration Properties → Linker → Input
    In the property
      "Additional Dependencies", add the library "strmiids.lib".
• Click Deploy solution in the Build menu to deploy the application. A sample WAV clip will also be deployed along with the executable demo file.
• Goto My Device > Program Files > vcpp_audio_playback_waf. Double click on the vcpp_audio_playback_waf.exe to run the application.

Using DirectShow

• DirectShow libraries can be used to play files with extensions .wav, .mp3, .wma, .ogg etc. For more information see MSDN.
• Demo project can be downloaded here.
• To build the project, navigate to Build menu in Visual studio and click Build Solution.
  • If the project does not build, go to
      Project Settings → Configuration Properties → Linker → Input
    In the property
      "Additional Dependencies", add the library "strmiids.lib".
• Click Deploy solution in the Build menu to deploy the application. A sample MP3 clip will also be deployed along with the executable demo file.
• Goto My Device > Program Files > vcpp_audio_playback_ds. Double click on the vcpp_audio_playback_ds.exe to run the application.

Image shows the output window for both vcpp_audio_playback_waf and vcpp_audio_playback_ds demo applications.

Audio Playback in CSharp

Using DirectShow

• Demo application can be downloaded from here.
• Navigate to Solution Explorer in visual studio > Right Click on Solution > Properties > Devices.
• Uncheck "Deploy the Latest version of the .NET Compact Framework (including Service Packs)".
• Build and deploy the project on your WinCE device.
• Download and Install .NET Compact Framework directly to the FlashDisk of the device from here.
• Go to My Device > Program Files > vcsharp_audio_playback_demo and run the application vcsharp_audio_playback_demo.exe.

Following GUI will open with different controls.

Note: vcsharp_audio_plyback_demo uses DirectShow.net library functions from DirectShowLib-2005.dll from a third party. Microsoft does not provide a managed API for DirectShow. Documentation related to this library and its licence is given here.