MateuszSkoczek/VDownload
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1.0-dev15 (Core code cleaning)

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Mateusz Skoczek
2022-03-07 14:59:11 +01:00
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parent d32c23f493
commit 51389c4df1
45 changed files with 802 additions and 1090 deletions
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108
VDownload.Core/Services/MediaProcessor.cs
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@@ -1,5 +1,4 @@
using System;
using System.ComponentModel;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
@@ -15,66 +14,50 @@ namespace VDownload.Core.Services
{
public class MediaProcessor
{
#region CONSTRUCTORS
public MediaProcessor(StorageFile outputFile, TimeSpan trimStart, TimeSpan trimEnd)
{
OutputFile = outputFile;
TrimStart = trimStart;
TrimEnd = trimEnd;
}
#endregion
#region PROPERTIES
public StorageFile OutputFile { get; private set; }
public TimeSpan TrimStart { get; private set; }
public TimeSpan TrimEnd { get; private set; }
#endregion
#region STANDARD METHODS
// SINGLE AUDIO & VIDEO FILE PROCESSING
public async Task Run(StorageFile audioVideoInputFile, MediaFileExtension extension, MediaType mediaType, CancellationToken cancellationToken = default)
public async Task Run(StorageFile mediaFile, MediaFileExtension extension, MediaType mediaType, StorageFile outputFile, TimeSpan? trimStart = null, TimeSpan? trimEnd = null, CancellationToken cancellationToken = default)
{
// Invoke ProcessingStarted event
ProcessingStarted?.Invoke(this, System.EventArgs.Empty);
// Invoke event at start
cancellationToken.ThrowIfCancellationRequested();
ProgressChanged(this, new EventArgs.ProgressChangedEventArgs(0));
// Init transcoder
MediaTranscoder mediaTranscoder = new MediaTranscoder
{
HardwareAccelerationEnabled = (bool)Config.GetValue("media_transcoding_use_hardware_acceleration"),
VideoProcessingAlgorithm = (bool)Config.GetValue("media_transcoding_use_mrfcrf444_algorithm") ? MediaVideoProcessingAlgorithm.MrfCrf444 : MediaVideoProcessingAlgorithm.Default,
TrimStartTime = TrimStart,
TrimStopTime = TrimEnd,
VideoProcessingAlgorithm = (MediaVideoProcessingAlgorithm)Config.GetValue("media_transcoding_algorithm"),
};
if (trimStart != null) mediaTranscoder.TrimStartTime = (TimeSpan)trimStart;
if (trimEnd != null) mediaTranscoder.TrimStopTime = (TimeSpan)trimEnd;
// Start transcoding operation
cancellationToken.ThrowIfCancellationRequested();
using (IRandomAccessStream outputFileOpened = await OutputFile.OpenAsync(FileAccessMode.ReadWrite))
using (IRandomAccessStream openedOutputFile = await outputFile.OpenAsync(FileAccessMode.ReadWrite))
{
PrepareTranscodeResult transcodingPreparated = await mediaTranscoder.PrepareStreamTranscodeAsync(await audioVideoInputFile.OpenAsync(FileAccessMode.Read), outputFileOpened, await GetMediaEncodingProfile(audioVideoInputFile, extension, mediaType));
// Prepare transcode task
PrepareTranscodeResult transcodingPreparated = await mediaTranscoder.PrepareStreamTranscodeAsync(await mediaFile.OpenAsync(FileAccessMode.Read), openedOutputFile, await GetMediaEncodingProfile(mediaFile, extension, mediaType));
// Start transcoding
IAsyncActionWithProgress<double> transcodingTask = transcodingPreparated.TranscodeAsync();
await transcodingTask.AsTask(cancellationToken, new Progress<double>((percent) => { ProcessingProgressChanged(this, new ProgressChangedEventArgs((int)Math.Round(percent), null)); }));
await outputFileOpened.FlushAsync();
await transcodingTask.AsTask(cancellationToken, new Progress<double>((percent) => { ProgressChanged(this, new EventArgs.ProgressChangedEventArgs(percent)); }));
cancellationToken.ThrowIfCancellationRequested();
// Finalizing
await openedOutputFile.FlushAsync();
transcodingTask.Close();
}
// Invoke ProcessingCompleted event
ProcessingCompleted?.Invoke(this, System.EventArgs.Empty);
// Invoke event at end
ProgressChanged(this, new EventArgs.ProgressChangedEventArgs(100, true));
}
// SEPARATE AUDIO & VIDEO FILES PROCESSING
public async Task Run(StorageFile audioFile, StorageFile videoFile, VideoFileExtension extension, CancellationToken cancellationToken = default)
public async Task Run(StorageFile audioFile, StorageFile videoFile, VideoFileExtension extension, StorageFile outputFile, TimeSpan? trimStart = null, TimeSpan? trimEnd = null, CancellationToken cancellationToken = default)
{
// Invoke ProcessingStarted event
ProcessingStarted?.Invoke(this, System.EventArgs.Empty);
// Invoke event at start
cancellationToken.ThrowIfCancellationRequested();
ProgressChanged(this, new EventArgs.ProgressChangedEventArgs(0));
// Init editor
MediaComposition mediaEditor = new MediaComposition();
@@ -86,28 +69,36 @@ namespace VDownload.Core.Services
await Task.WhenAll(getVideoFileTask, getAudioFileTask);
MediaClip videoElement = getVideoFileTask.Result;
videoElement.TrimTimeFromStart = TrimStart;
videoElement.TrimTimeFromEnd = TrimEnd;
if (trimStart != null) videoElement.TrimTimeFromStart = (TimeSpan)trimStart;
if (trimEnd != null) videoElement.TrimTimeFromEnd = (TimeSpan)trimEnd;
BackgroundAudioTrack audioElement = getAudioFileTask.Result;
audioElement.TrimTimeFromStart = TrimStart;
audioElement.TrimTimeFromEnd = TrimEnd;
if (trimStart != null) audioElement.TrimTimeFromStart = (TimeSpan)trimStart;
if (trimEnd != null) audioElement.TrimTimeFromEnd = (TimeSpan)trimEnd;
mediaEditor.Clips.Add(getVideoFileTask.Result);
mediaEditor.BackgroundAudioTracks.Add(getAudioFileTask.Result);
mediaEditor.Clips.Add(videoElement);
mediaEditor.BackgroundAudioTracks.Add(audioElement);
// Start rendering operation
var renderOperation = mediaEditor.RenderToFileAsync(OutputFile, (MediaTrimmingPreference)Config.GetValue("media_editing_algorithm"), await GetMediaEncodingProfile(videoFile, audioFile, (MediaFileExtension)extension, MediaType.AudioVideo));
renderOperation.Progress += (info, progress) => { ProcessingProgressChanged(this, new ProgressChangedEventArgs((int)Math.Round(progress), null)); };
var renderOperation = mediaEditor.RenderToFileAsync(outputFile, (MediaTrimmingPreference)Config.GetValue("media_editing_algorithm"), await GetMediaEncodingProfile(videoFile, audioFile, (MediaFileExtension)extension, MediaType.AudioVideo));
renderOperation.Progress += (info, progress) => { ProgressChanged(this, new EventArgs.ProgressChangedEventArgs(progress)); };
cancellationToken.ThrowIfCancellationRequested();
await renderOperation.AsTask(cancellationToken);
// Invoke ProcessingCompleted event
ProcessingCompleted?.Invoke(this, System.EventArgs.Empty);
// Invoke event at end
ProgressChanged(this, new EventArgs.ProgressChangedEventArgs(100, true));
}
// SINGLE AUDIO OR VIDEO FILES PROCESSING
public async Task Run(StorageFile audioFile, AudioFileExtension extension, CancellationToken cancellationToken = default) { await Run(audioFile, (MediaFileExtension)extension, MediaType.OnlyAudio, cancellationToken); }
public async Task Run(StorageFile videoFile, VideoFileExtension extension, CancellationToken cancellationToken = default) { await Run(videoFile, (MediaFileExtension)extension, MediaType.OnlyVideo, cancellationToken); }
// AUDIO FILE PROCESSING
public async Task Run(StorageFile audioFile, AudioFileExtension extension, StorageFile outputFile, TimeSpan? trimStart = null, TimeSpan? trimEnd = null, CancellationToken cancellationToken = default)
{
await Run(audioFile, (MediaFileExtension)extension, MediaType.OnlyAudio, outputFile, trimStart, trimEnd, cancellationToken);
}
// VIDEO FILE PROCESSING
public async Task Run(StorageFile videoFile, VideoFileExtension extension, StorageFile outputFile, TimeSpan? trimStart = null, TimeSpan? trimEnd = null, CancellationToken cancellationToken = default)
{
await Run(videoFile, (MediaFileExtension)extension, MediaType.OnlyVideo, outputFile, trimStart, trimEnd, cancellationToken);
}
#endregion
@@ -116,7 +107,7 @@ namespace VDownload.Core.Services
#region LOCAL METHODS
// GET ENCODING PROFILE
public static async Task<MediaEncodingProfile> GetMediaEncodingProfile(StorageFile videoFile, StorageFile audioFile, MediaFileExtension extension, MediaType mediaType)
private static async Task<MediaEncodingProfile> GetMediaEncodingProfile(StorageFile videoFile, StorageFile audioFile, MediaFileExtension extension, MediaType mediaType)
{
// Create profile object
MediaEncodingProfile profile;
@@ -164,7 +155,10 @@ namespace VDownload.Core.Services
// Return profile
return profile;
}
public static async Task<MediaEncodingProfile> GetMediaEncodingProfile(StorageFile audioVideoFile, MediaFileExtension extension, MediaType mediaType) { return await GetMediaEncodingProfile(audioVideoFile, audioVideoFile, extension, mediaType); }
private static async Task<MediaEncodingProfile> GetMediaEncodingProfile(StorageFile audioVideoFile, MediaFileExtension extension, MediaType mediaType)
{
return await GetMediaEncodingProfile(audioVideoFile, audioVideoFile, extension, mediaType);
}
#endregion
@@ -172,9 +166,7 @@ namespace VDownload.Core.Services
#region EVENT HANDLERS
public event EventHandler ProcessingStarted;
public event EventHandler<ProgressChangedEventArgs> ProcessingProgressChanged;
public event EventHandler ProcessingCompleted;
public event EventHandler<EventArgs.ProgressChangedEventArgs> ProgressChanged;
#endregion
}