Play audio/video from base64 in Xamarin

Question

I have stored video/audio as base64 code in DB on server now i need to play video/audio from base64 which i will get through web-api. Please help me to play audio/video through base64 code.

Answer 1

Hello,​

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You can decode your base64 string to Byte[], then play it.

For example, In android, you can use MediaPlayer to play it. I used depdence service to make an test. If I want to play the audio, I do not have DB to store the base64 string, So I put the base64 string to assets folder called AboutAssets.txt, read base64 string to content

   public class PlayService: IMyPlay  
       {  
     
           public void PlayLoadService()  
           {  
   //I do not have DB to store the base64 string, So I put the base64 string to assets folder called `AboutAssets.txt`, read base64 string to `content`  
               string content;  
               AssetManager assets = Android.App.Application.Context.Assets;  
               using (StreamReader sr = new StreamReader(assets.Open("AboutAssets.txt")))  
               {  
                   content = sr.ReadToEnd();  
               }  
     
               byte[] decodedString = Base64.Decode(content,Base64Flags.Default);  
     
   //play it  
               Play(decodedString);  
              
           }  
     
           MediaPlayer currentPlayer;  
           public void Play(byte[] AudioFile)  
           {  
               Stop();  
               currentPlayer = new MediaPlayer();  
               currentPlayer.Prepared += (sender, e) =>  
               {  
                   currentPlayer.Start();  
               };  
               currentPlayer.SetDataSource(new StreamMediaDataSource(new System.IO.MemoryStream(AudioFile)));  
               currentPlayer.Prepare();  
           }  
     
           void Stop()  
           {  
               if (currentPlayer == null)  
                   return;  
     
               currentPlayer.Stop();  
               currentPlayer.Dispose();  
               currentPlayer = null;  
           }  
       }  
     
       public class StreamMediaDataSource : MediaDataSource  
       {  
           System.IO.Stream data;  
     
           public StreamMediaDataSource(System.IO.Stream Data)  
           {  
               data = Data;  
           }  
     
           public override long Size  
           {  
               get  
               {  
                   return data.Length;  
               }  
           }  
     
           public override int ReadAt(long position, byte[] buffer, int offset, int size)  
           {  
               data.Seek(position, System.IO.SeekOrigin.Begin);  
               return data.Read(buffer, offset, size);  
           }  
     
           public override void Close()  
           {  
               if (data != null)  
               {  
                   data.Dispose();  
                   data = null;  
               }  
           }  
     
           protected override void Dispose(bool disposing)  
           {  
               base.Dispose(disposing);  
     
               if (data != null)  
               {  
                   data.Dispose();  
                   data = null;  
               }  
           }  
       }  

For IOS, you can refer to this thread:

https://forums.xamarin.com/discussion/42640/how-to-record-and-play-audio-in-xamarin-ios-using-bytes-array

Best Regards,

Leon Lu

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