//async void SendDMToMyAunt()
//{
// string username = "******".ToLower();
// //long userPK = 123;
// var message = "Hello my auntie";
// // remove \r characters, since windows is adding it to new lines
// message = message.Replace("\r", "");
// var inbox = await InstaApi.MessagingProcessor.GetDirectInboxAsync(PaginationParameters.MaxPagesToLoad(1));
// if (inbox.Succeeded)
// {
// // Act as Instagram>
// // search throw ranked recipients:
// // manipulate instagram by searching like real instagram:
// await InstaApi.MessagingProcessor.GetRankedRecipientsByUsernameAsync(username.Substring(0, 2));
// await InstaApi.MessagingProcessor.GetRankedRecipientsByUsernameAsync(username.Substring(0, 4));
// var rankedRecipients = await InstaApi.MessagingProcessor.GetRankedRecipientsByUsernameAsync(username);
// if (rankedRecipients.Succeeded)
// {
// var threadId = string.Empty;
// long userPk = -1;
// if (rankedRecipients.Value?.Threads?.Count > 0)
// {
// var byThread = rankedRecipients.Value.Threads.FirstOrDefault(x => x.Users.Count == 1 && x.Users.FirstOrDefault()?.UserName.ToLower() == username);
// if (byThread != null)
// threadId = byThread.ThreadId;
// }
// else
// {
// var byUser = rankedRecipients.Value.Users.FirstOrDefault(x => x.UserName.ToLower() == username);
// if (byUser != null)
// userPk = byUser.Pk;
// }
// // now send message:
// if (userPk != -1) // via user public key (user id PK) if exists
// {
// var dm = await InstaApi.MessagingProcessor.SendDirectTextAsync(userPk.ToString(), null, message);
// }
// else if (!string.IsNullOrEmpty(threadId)) // with thread id if exists
// {
// var dm = await InstaApi.MessagingProcessor.SendDirectTextAsync(null, threadId, message);
// }
// else
// Console.WriteLine("WHAT THE F**K?! NO THREAD OR PK FOUND");
// }
// }
//}
//async Task<InstaDirectInboxThread> GetThread(InstaDirectInboxContainer inbox, long userPK)
//{
// if (inbox?.Inbox?.Threads?.Count > 0)
// {
// var exists = inbox.Inbox.Threads.FirstOrDefault(x => x.Users.Count == 1 && x.Users.FirstOrDefault()?.Pk == userPK);
// if (exists != null)
// return exists;
// var getThreadByParticipants = await Helper.InstaApi.MessagingProcessor.GetThreadByParticipantsAsync(inbox.SeqId, new long[] { userPK });
// if (getThreadByParticipants.Succeeded)
// return getThreadByParticipants.Value;
// }
// return null;
//}
private async void Button_Click(object sender, RoutedEventArgs e)
{
FileOpenPicker openPicker = new FileOpenPicker
{
ViewMode = PickerViewMode.Thumbnail,
SuggestedStartLocation = PickerLocationId.PicturesLibrary
};
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".bmp");
//openPicker.FileTypeFilter.Add(".gif");
openPicker.FileTypeFilter.Add(".png");
openPicker.FileTypeFilter.Add(".mp4");
var file = await openPicker.PickSingleFileAsync();
if (file == null)
{
return;
}
var stream = await file.OpenAsync(FileAccessMode.Read);
var grabber = await FrameGrabber.CreateFromStreamAsync(stream);
var frame = await grabber
.ExtractVideoFrameAsync(TimeSpan.FromSeconds(4.5), false);
int ix = 1;
var savedFile = await KnownFolders.MusicLibrary.CreateFileAsync(ix + ".jpg", CreationCollisionOption.GenerateUniqueName);
var oStream = await savedFile.OpenAsync(FileAccessMode.ReadWrite);
await frame.EncodeAsJpegAsync(oStream);
oStream.Dispose();
for (int i = 0; i < 100; i++)
{
//var frame2 = await grabber .ExtractNextVideoFrameAsync();
//var savedFile2 = await KnownFolders.MusicLibrary.CreateFileAsync(ix + ".jpg", CreationCollisionOption.GenerateUniqueName);
//var oStream2 = await savedFile2.OpenAsync(FileAccessMode.ReadWrite);
//await frame2.EncodeAsJpegAsync(oStream2);
//oStream2.Dispose();
//var img = new Image
//{
// Height = 150,
// Width = 150,
// Name = ix.ToString()
//};
//img.Source
//LV.Children.Add(img);
}
}
private async Task InitAsync()
{
var stream = await file.OpenAsync(FileAccessMode.Read);
grabber = await FrameGrabber.CreateFromStreamAsync(stream);
DecodedPixelWidth = (int)Math.Round(videoPropsViewModel.Width * percentageOfResolution / 100);
DecodedPixelHeight = (int)Math.Round(videoPropsViewModel.Height * percentageOfResolution / 100);
grabber.DecodePixelWidth = DecodedPixelWidth;
grabber.DecodePixelHeight = DecodedPixelHeight;
}
private async void ExtractFrame(object sender, RoutedEventArgs e)
{
if (currentFile == null || mediaPlayer.PlaybackSession == null)
{
await DisplayErrorMessage("Please open a video file first.");
}
else
{
try
{
var stream = await currentFile.OpenAsync(FileAccessMode.Read);
bool exactSeek = grabFrameExactSeek.IsOn;
var frameGrabber = await FrameGrabber.CreateFromStreamAsync(stream);
var frame = await frameGrabber.ExtractVideoFrameAsync(mediaPlayer.PlaybackSession.Position, exactSeek);
var filePicker = new FileSavePicker();
filePicker.SuggestedStartLocation = PickerLocationId.VideosLibrary;
filePicker.DefaultFileExtension = ".jpg";
filePicker.FileTypeChoices["Jpeg file"] = new[] { ".jpg" }.ToList();
var file = await filePicker.PickSaveFileAsync();
if (file != null)
{
var outputStream = await file.OpenAsync(FileAccessMode.ReadWrite);
await frame.EncodeAsJpegAsync(outputStream);
outputStream.Dispose();
bool launched = await Windows.System.Launcher.LaunchFileAsync(file, new LauncherOptions()
{
DisplayApplicationPicker = false
});
if (!launched)
{
await DisplayErrorMessage("File has been created:\n" + file.Path);
}
}
}
catch (Exception ex)
{
await DisplayErrorMessage(ex.Message);
}
}
}
private async void Button_Click(object sender, RoutedEventArgs e)
{
FrameGrabber frameGrabber;
frameGrabber = await FrameGrabber.CreateFromStreamAsync(stream);
sw.Restart();
int counter = 0;
VideoFrame frame = await frameGrabber.ExtractVideoFrameAsync(TimeSpan.Zero, true);
do
{
frame = await frameGrabber.ExtractNextVideoFrameAsync();
Debug.WriteLine($"Frame (#{counter++}) from {frame?.Timestamp.TotalSeconds} sec. Elapsed:{sw.Elapsed.TotalSeconds} seconds");
} while (frame != null);
Debug.WriteLine($"All ({counter}) in {sw.Elapsed.TotalSeconds} seconds");
}
public async Task TestExtractVideoFrameAsync()
{
Uri uri = new Uri(Constants.DownloadUriSource);
Assert.IsNotNull(uri);
StorageFile file = await StorageFile.CreateStreamedFileFromUriAsync(Constants.DownloadStreamedFileName, uri, null);
Assert.IsNotNull(file);
IRandomAccessStream readStream = await file.OpenAsync(FileAccessMode.Read);
Assert.IsNotNull(readStream);
// CreateFromStreamAsync should return valid FFmpegInteropMSS object which generates valid MediaStreamSource object
var frameGrabber = await FrameGrabber.CreateFromStreamAsync(readStream);
var frame = await frameGrabber.ExtractVideoFrameAsync(TimeSpan.Zero);
Assert.IsNotNull(frame);
using (var stream = new InMemoryRandomAccessStream())
{
// encode as jpeg
await frame.EncodeAsJpegAsync(stream);
stream.Seek(0);
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
var bitmap = await decoder.GetFrameAsync(0);
Assert.IsNotNull(bitmap);
// encode as png
stream.Seek(0);
stream.Size = 0;
await frame.EncodeAsPngAsync(stream);
stream.Seek(0);
decoder = await BitmapDecoder.CreateAsync(stream);
bitmap = await decoder.GetFrameAsync(0);
Assert.IsNotNull(bitmap);
// encode as bmp
stream.Seek(0);
stream.Size = 0;
await frame.EncodeAsBmpAsync(stream);
stream.Seek(0);
decoder = await BitmapDecoder.CreateAsync(stream);
bitmap = await decoder.GetFrameAsync(0);
Assert.IsNotNull(bitmap);
}
}
