private async Task <string> GetBifFile(GetBifFile request) { var widthVal = request.MaxWidth.HasValue ? request.MaxWidth.Value.ToString(CultureInfo.InvariantCulture) : string.Empty; var item = _libraryManager.GetItemById(request.Id); var mediaSources = ((IHasMediaSources)item).GetMediaSources(false).ToList(); var mediaSource = mediaSources.FirstOrDefault(i => string.Equals(i.Id, request.MediaSourceId)) ?? mediaSources.First(); var path = Path.Combine(_appPaths.ImageCachePath, "bif", request.Id, request.MediaSourceId, widthVal, "index.bif"); if (File.Exists(path)) { return(path); } var protocol = mediaSource.Protocol; var inputPath = MediaEncoderHelpers.GetInputArgument(mediaSource.Path, protocol, null, mediaSource.PlayableStreamFileNames); var semaphore = GetLock(path); await semaphore.WaitAsync().ConfigureAwait(false); try { if (File.Exists(path)) { return(path); } await _mediaEncoder.ExtractVideoImagesOnInterval(inputPath, protocol, mediaSource.Video3DFormat, TimeSpan.FromSeconds(10), Path.GetDirectoryName(path), "img_", request.MaxWidth, CancellationToken.None) .ConfigureAwait(false); var images = new DirectoryInfo(Path.GetDirectoryName(path)) .EnumerateFiles() .Where(img => string.Equals(img.Extension, ".jpg", StringComparison.Ordinal)) .OrderBy(i => i.FullName) .ToList(); using (var fs = _fileSystem.GetFileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, true)) { var magicNumber = new byte[] { 0x89, 0x42, 0x49, 0x46, 0x0d, 0x0a, 0x1a, 0x0a }; await fs.WriteAsync(magicNumber, 0, magicNumber.Length); // version var bytes = GetBytes(0); await fs.WriteAsync(bytes, 0, bytes.Length); // image count bytes = GetBytes(images.Count); await fs.WriteAsync(bytes, 0, bytes.Length); // interval in ms bytes = GetBytes(10000); await fs.WriteAsync(bytes, 0, bytes.Length); // reserved for (var i = 20; i <= 63; i++) { bytes = new byte[] { 0x00 }; await fs.WriteAsync(bytes, 0, bytes.Length); } // write the bif index var index = 0; long imageOffset = 64 + (8 * images.Count) + 8; foreach (var img in images) { bytes = GetBytes(index); await fs.WriteAsync(bytes, 0, bytes.Length); bytes = GetBytes(imageOffset); await fs.WriteAsync(bytes, 0, bytes.Length); imageOffset += img.Length; index++; } bytes = new byte[] { 0xff, 0xff, 0xff, 0xff }; await fs.WriteAsync(bytes, 0, bytes.Length); bytes = GetBytes(imageOffset); await fs.WriteAsync(bytes, 0, bytes.Length); // write the images foreach (var img in images) { using (var imgStream = _fileSystem.GetFileStream(img.FullName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true)) { await imgStream.CopyToAsync(fs).ConfigureAwait(false); } } } return(path); } finally { semaphore.Release(); } }
private async Task<string> GetBifFile(GetBifFile request) { var widthVal = request.MaxWidth.HasValue ? request.MaxWidth.Value.ToString(CultureInfo.InvariantCulture) : string.Empty; var item = _libraryManager.GetItemById(request.Id); var mediaSources = ((IHasMediaSources)item).GetMediaSources(false).ToList(); var mediaSource = mediaSources.FirstOrDefault(i => string.Equals(i.Id, request.MediaSourceId)) ?? mediaSources.First(); var path = Path.Combine(_appPaths.ImageCachePath, "bif", request.Id, request.MediaSourceId, widthVal, "index.bif"); if (File.Exists(path)) { return path; } var protocol = mediaSource.Protocol; var inputPath = MediaEncoderHelpers.GetInputArgument(mediaSource.Path, protocol, null, mediaSource.PlayableStreamFileNames); var semaphore = GetLock(path); await semaphore.WaitAsync().ConfigureAwait(false); try { if (File.Exists(path)) { return path; } await _mediaEncoder.ExtractVideoImagesOnInterval(inputPath, protocol, mediaSource.Video3DFormat, TimeSpan.FromSeconds(10), Path.GetDirectoryName(path), "img_", request.MaxWidth, CancellationToken.None) .ConfigureAwait(false); var images = new DirectoryInfo(Path.GetDirectoryName(path)) .EnumerateFiles() .Where(img => string.Equals(img.Extension, ".jpg", StringComparison.Ordinal)) .OrderBy(i => i.FullName) .ToList(); using (var fs = _fileSystem.GetFileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, true)) { var magicNumber = new byte[] { 0x89, 0x42, 0x49, 0x46, 0x0d, 0x0a, 0x1a, 0x0a }; await fs.WriteAsync(magicNumber, 0, magicNumber.Length); // version var bytes = GetBytes(0); await fs.WriteAsync(bytes, 0, bytes.Length); // image count bytes = GetBytes(images.Count); await fs.WriteAsync(bytes, 0, bytes.Length); // interval in ms bytes = GetBytes(10000); await fs.WriteAsync(bytes, 0, bytes.Length); // reserved for (var i = 20; i <= 63; i++) { bytes = new byte[] { 0x00 }; await fs.WriteAsync(bytes, 0, bytes.Length); } // write the bif index var index = 0; long imageOffset = 64 + (8 * images.Count) + 8; foreach (var img in images) { bytes = GetBytes(index); await fs.WriteAsync(bytes, 0, bytes.Length); bytes = GetBytes(imageOffset); await fs.WriteAsync(bytes, 0, bytes.Length); imageOffset += img.Length; index++; } bytes = new byte[] { 0xff, 0xff, 0xff, 0xff }; await fs.WriteAsync(bytes, 0, bytes.Length); bytes = GetBytes(imageOffset); await fs.WriteAsync(bytes, 0, bytes.Length); // write the images foreach (var img in images) { using (var imgStream = _fileSystem.GetFileStream(img.FullName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true)) { await imgStream.CopyToAsync(fs).ConfigureAwait(false); } } } return path; } finally { semaphore.Release(); } }
public object Get(GetBifFile request) { return(ToStaticFileResult(GetBifFile(request).Result)); }
public object Get(GetBifFile request) { return ToStaticFileResult(GetBifFile(request).Result); }