public async void CheckFile()
{
StorageFolder storageFolder = KnownFolders.MusicLibrary;
var checkFile = await storageFolder.TryGetItemAsync(this.Recorder.FileName);
if (checkFile == null)
{
this.Info.Text = "Wav not recorded ...";
}
else
{
StorageFile storageFile = await storageFolder.GetFileAsync(this.Recorder.FileName);
var parser = new RiffParser();
// read file
await Windows.System.Threading.ThreadPool.RunAsync(
async (workItem) =>
{
IRandomAccessStream stream = await storageFile.OpenAsync(FileAccessMode.Read);
Stream sstream = stream.AsStream();
parser.OpenFile(sstream);
// Define the processing delegates
RiffParser.ProcessChunkElement pc = ProcessChunk;
// Read all top level elements and chunks
int size = parser.DataSize;
while (size > 0)
{
// Prefix the line with the current top level type
var info = (RiffParser.FromFourCC(parser.FileType) + " (" + size.ToString() + "): ");
// Get the next element (if there is one)
if (false == parser.ReadElement(ref size, pc, null))
{
break;
}
}
// Close the stream
parser.CloseFile();
});
}
}
/// <summary>
/// Handle List elements found in the AVI file. Ignores unknown lists and recursively looks
/// at the content of known lists.
/// </summary>
/// <param name="rp"></param>
/// <param name="FourCC"></param>
/// <param name="length"></param>
private void ProcessAVIList(RiffParser rp, int FourCC, int length)
{
RiffParser.ProcessChunkElement pac = new RiffParser.ProcessChunkElement(ProcessAVIChunk);
RiffParser.ProcessListElement pal = new RiffParser.ProcessListElement(ProcessAVIList);
// Is this the header?
if ((AviRiffData.ckidAVIHeaderList == FourCC) ||
(AviRiffData.ckidAVIStreamList == FourCC) ||
(AviRiffData.ckidINFOList == FourCC))
{
while (length > 0)
{
if (false == rp.ReadElement(ref length, pac, pal))
{
break;
}
}
}
else
{
// Unknown lists - ignore
rp.SkipData(length);
}
}