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m3u8_processor_next.cs
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m3u8_processor_next.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using m3u8.ext;
using m3u8.infrastructure;
using M = System.Runtime.CompilerServices.MethodImplAttribute;
using O = System.Runtime.CompilerServices.MethodImplOptions;
namespace m3u8
{
/// <summary>
///
/// </summary>
internal sealed class m3u8_client_next : IDisposable
{
/// <summary>
///
/// </summary>
public struct init_params
{
public HttpCompletionOption? HttpCompletionOption { get; set; }
public int? AttemptRequestCount { get; set; }
public bool? ConnectionClose { get; set; }
}
#region [.field's.]
private HttpClient _HttpClient;
private IDisposable _DisposableObj;
private bool? _ConnectionClose;
private int _AttemptRequestCount;
private HttpCompletionOption _HttpCompletionOption;
#endregion
#region [.ctor().]
public m3u8_client_next( HttpClient httpClient, in init_params ip )
{
_HttpClient = httpClient ?? throw (new ArgumentNullException( nameof( httpClient ) ));
InitParams = ip;
_ConnectionClose = ip.ConnectionClose;
_AttemptRequestCount = ip.AttemptRequestCount.GetValueOrDefault( 1 );
_HttpCompletionOption = ip.HttpCompletionOption.GetValueOrDefault( HttpCompletionOption.ResponseHeadersRead );
}
internal m3u8_client_next( in (HttpClient httpClient, IDisposable disposableObj) t, in init_params ip ) : this( t.httpClient, in ip )
{
_DisposableObj = t.disposableObj;
}
public void Dispose()
{
if ( _DisposableObj != null )
{
_DisposableObj.Dispose();
_DisposableObj = null;
}
}
#endregion
public init_params InitParams { get; }
#if M3U8_CLIENT_TESTS
public HttpClient HttpClient => _HttpClient;
#endif
private static async Task< m3u8_Exception > create_m3u8_Exception( HttpResponseMessage resp, CancellationToken ct )
{
var responseText = default(string);
try
{
#if NETCOREAPP
responseText = await resp.Content.ReadAsStringAsync( ct ).CAX();
#else
responseText = await resp.Content.ReadAsStringAsync( /*ct*/ ).CAX();
#endif
}
catch ( Exception ex )
{
Debug.WriteLine( ex );
resp.EnsureSuccessStatusCode();
}
return (new m3u8_Exception( resp.CreateExceptionMessage( responseText ) ));
}
private static bool TryGetContentLength( HttpContent responseContent, out (string errorReason, long contentLength, string contentMediaType) t )
{
var rch = responseContent.Headers;
var contentRange = rch.ContentRange;
if ( (contentRange != null) && contentRange.HasLength )
{
var contentLength = contentRange.Length.Value;
var contentMediaType = rch.ContentType?.MediaType;
t = (null, contentLength, contentMediaType);
return (true);
}
else
{
if ( rch.ContentLength.HasValue )
{
var contentLength = rch.ContentLength.Value;
var contentMediaType = rch.ContentType?.MediaType;
t = (null, contentLength, contentMediaType);
return (true);
}
if ( contentRange == null )
{
t = ("Content-Range (response-header) is null", 0, null);
return (false);
}
//if ( !contentRange.HasLength )
//{
t = ("Content-Range (response-header) => not has length", 0, null);
return (false);
//}
}
}
private HttpRequestMessage CreateRequstGet( Uri url, IDictionary< string, string > requestHeaders = null )
{
var req = new HttpRequestMessage( HttpMethod.Get, url );
req.Headers.ConnectionClose = _ConnectionClose;
if ( requestHeaders != null )
{
foreach ( var header in requestHeaders )
{
var suc = req.Headers.TryAddWithoutValidation( header.Key, header.Value );
Debug.Assert( suc );
}
}
return (req);
}
public async Task< m3u8_file_t > DownloadFile( Uri url, CancellationToken ct = default, IDictionary< string, string > requestHeaders = null )
{
if ( url == null ) throw (new m3u8_ArgumentException( nameof(url) ));
//------------------------------------------------------------------//
for ( var attemptRequestCount = _AttemptRequestCount; 0 < attemptRequestCount; attemptRequestCount-- )
{
try
{
using ( var req = CreateRequstGet( url, requestHeaders ) )
using ( var resp = await _HttpClient.SendAsync( req, _HttpCompletionOption, ct ).CAX() )
using ( var content = resp.Content )
{
if ( resp.IsSuccessStatusCode )
{
#if NETCOREAPP
var text = await content.ReadAsStringAsync( ct ).CAX();
#else
var text = await content.ReadAsStringAsync( /*ct*/ ).CAX();
#endif
var m3u8File = m3u8_file_t.Parse( text, url );
return (m3u8File);
}
throw (await create_m3u8_Exception( resp, ct ).CAX());
}
}
catch ( Exception /*ex*/ )
{
if ( (attemptRequestCount == 1) || ct.IsCancellationRequested )
{
throw;
}
}
}
throw (new m3u8_Exception( $"No content found while {_AttemptRequestCount} attempt requests." ));
}
//------------------------------------------------------------------------------------------//
/// <summary>
///
/// </summary>
public struct DownloadPartStepActionParams
{
public DownloadPartStepActionParams( in m3u8_part_ts__v2 part ) => Part = part;
public m3u8_part_ts__v2 Part { get; init; }
public long? TotalContentLength { get; internal set; }
public long TotalBytesReaded { get; internal set; }
public int BytesReaded { get; internal set; }
public double? InstantSpeedInMbps { get; internal set; }
}
/// <summary>
///
/// </summary>
public delegate void DownloadPartStepActionDelegate( in DownloadPartStepActionParams ip );//( in m3u8_part_ts__v2 part, long totalBytesReaded, int bytesReaded, double? instantSpeedInMbps );
/// <summary>
///
/// </summary>
public struct DownloadPartInputParams
{
public I_ThrottlerBySpeed_InDownloadProcessUser ThrottlerBySpeed_User { [M(O.AggressiveInlining)] get; set; }
public ObjectPool< byte[] > RespBufPool { [M(O.AggressiveInlining)] get; set; }
public DownloadPartStepActionDelegate DownloadPartStepAction { [M(O.AggressiveInlining)] get; set; }
public I_download_threads_semaphore DownloadThreadsSemaphore { [M(O.AggressiveInlining)] get; set; }
public ManualResetEventSlim WaitIfPausedEvent { [M(O.AggressiveInlining)] get; set; }
public Action< m3u8_part_ts__v2 > WaitingIfPausedBefore { [M(O.AggressiveInlining)] get; set; }
public Action< m3u8_part_ts__v2 > WaitingIfPausedAfter { [M(O.AggressiveInlining)] get; set; }
}
public async Task< m3u8_part_ts__v2 > DownloadPart( m3u8_part_ts__v2 part, Uri baseAddress
, DownloadPartInputParams ip, CancellationToken ct = default, IDictionary< string, string > requestHeaders = null )
{
if ( baseAddress == null ) throw (new m3u8_ArgumentException( nameof(baseAddress) ));
if ( part.Stream == null ) throw (new m3u8_ArgumentException( nameof(part.Stream) ));
if ( part.RelativeUrlName.IsNullOrWhiteSpace() ) throw (new m3u8_ArgumentException( nameof(part.RelativeUrlName) ));
if ( ip.ThrottlerBySpeed_User == null ) throw (new m3u8_ArgumentException( nameof(ip.ThrottlerBySpeed_User) ));
if ( ip.RespBufPool == null ) throw (new m3u8_ArgumentException( nameof(ip.RespBufPool) ));
if ( ip.DownloadThreadsSemaphore == null ) throw (new m3u8_ArgumentException( nameof(ip.DownloadThreadsSemaphore) ));
//if ( ip.WaitIfPausedEvent == null ) throw (new m3u8_ArgumentException( nameof(ip.WaitIfPausedEvent) ));
//----------------------------------------------------------------------------------------------------------------//
var url = part.GetPartUrl( baseAddress );
var dpsa = new DownloadPartStepActionParams( part );
for ( var attemptRequestCount = _AttemptRequestCount; 0 < attemptRequestCount; attemptRequestCount-- )
{
try
{
using ( var req = CreateRequstGet( url, requestHeaders ) )
using ( var resp = await _HttpClient.SendAsync( req, _HttpCompletionOption, ct ).CAX() )
{
if ( resp.IsSuccessStatusCode )
{
#if NETCOREAPP
using var downloadStream = await resp.Content.ReadAsStreamAsync( ct ).CAX();
#else
using var downloadStream = await resp.Content.ReadAsStreamAsync( /*ct*/ ).CAX();
#endif
dpsa.TotalContentLength = TryGetContentLength( resp.Content, out var x ) ? x.contentLength : null;
using var holder = ip.RespBufPool.GetHolder();
var buf = holder.Value;
for ( var totalBytesReaded = 0L; ; )
{
#region comm, because fall off by timeout. [.check 'waitIfPausedEvent'.]
//if ( !ip.WaitIfPausedEvent.IsSet )
//{
// ip.WaitingIfPausedBefore?.Invoke( part );
// ip.WaitIfPausedEvent.Wait( ct );
// ip.WaitingIfPausedAfter?.Invoke( part );
// ip.ThrottlerBySpeed_User.Restart();
//}
#endregion
#region [.throttler by speed.]
var instantSpeedInMbps = ip.ThrottlerBySpeed_User.Throttle( ct /*joinedCts.Token*/ );
#endregion
await ip.DownloadThreadsSemaphore.WaitAsync( ct ).CAX();
int bytesReaded;
try
{
bytesReaded = await downloadStream.ReadAsync( buf, 0, buf.Length, ct ).CAX();
}
finally
{
ip.DownloadThreadsSemaphore.Release();
}
if ( bytesReaded == 0 )
break;
await part.Stream.WriteAsync( buf, 0, bytesReaded, ct ).CAX();
totalBytesReaded += bytesReaded;
ip.ThrottlerBySpeed_User.TakeIntoAccountDownloadedBytes( bytesReaded );
dpsa.InstantSpeedInMbps = instantSpeedInMbps;
dpsa.TotalBytesReaded = totalBytesReaded;
dpsa.BytesReaded = bytesReaded;
ip.DownloadPartStepAction?.Invoke( dpsa );
}
return (part);
}
throw (await create_m3u8_Exception( resp, ct ).CAX());
}
}
catch ( Exception ex )
{
if ( (attemptRequestCount == 1) || ct.IsCancellationRequested )
{
part.SetError( ex );
return (part);
}
}
}
throw (new m3u8_Exception( $"No content found while {_AttemptRequestCount} attempt requests." ));
}
}
/// <summary>
///
/// </summary>
internal static class m3u8_client_next_factory
{
public static m3u8_client_next Create() => Create( HttpClientFactory_WithRefCount.Get() );
public static m3u8_client_next Create( in (TimeSpan timeout, int attemptRequestCountByPart) t ) => Create( t.timeout, t.attemptRequestCountByPart );
public static m3u8_client_next Create( in TimeSpan timeout, int attemptRequestCountByPart = 10 ) => Create( HttpClientFactory_WithRefCount.Get( timeout ), attemptRequestCountByPart );
public static m3u8_client_next Create( in m3u8_client_next.init_params ip ) => Create( HttpClientFactory_WithRefCount.Get(), ip );
private static m3u8_client_next Create( in (HttpClient httpClient, IDisposable) t, in m3u8_client_next.init_params ip ) => new m3u8_client_next( t, ip );
private static m3u8_client_next Create( in (HttpClient httpClient, IDisposable) t, int attemptRequestCountByPart = 10 )
=> Create( t, new m3u8_client_next.init_params() { AttemptRequestCount = Math.Max( attemptRequestCountByPart, 1 ) } );
public static void ForceClearAndDisposeAll() => HttpClientFactory_WithRefCount.ForceClearAndDisposeAll();
}
/// <summary>
///
/// </summary>
internal static class m3u8_processor_next
{
private static IEnumerable< m3u8_part_ts__v2 > download_m3u8File_parts_parallel( DownloadPartsAndSaveInputParams ip, IDictionary< string, string > requestHeaders = null )
{
var m3u8File = ip.m3u8File;
var baseAddress = m3u8File.BaseAddress;
var totalPatrs = m3u8File.Parts.Count;
var successReceivedPartCount = 0;
var failedReceivedPartCount = 0;
ip.ResponseStepAction?.Invoke( new ResponseStepActionParams( totalPatrs ) );
var expectedPartNumber = m3u8File.Parts.FirstOrDefault().OrderNumber;
var maxPartNumber = m3u8File.Parts.LastOrDefault ().OrderNumber;
var sourceQueue = new Queue< m3u8_part_ts__v2 >( m3u8File.Parts );
var downloadPartsSet = new SortedSet< m3u8_part_ts__v2 >( m3u8_part_ts__v2.Comparer.Inst );
using ( var throttlerBySpeed_User = ThrottlerBySpeed_InDownloadProcessUser.Start( ip.ThrottlerBySpeed ) )
using ( var innerCts = new CancellationTokenSource() )
using ( var joinedCts = CancellationTokenSource.CreateLinkedTokenSource( ip.CancellationToken, innerCts.Token ) )
using ( var canExtractPartEvent = new AutoResetEvent( false ) )
{
var t = new m3u8_client_next.DownloadPartInputParams()
{
ThrottlerBySpeed_User = throttlerBySpeed_User,
RespBufPool = ip.RespBufPool,
DownloadPartStepAction = ip.DownloadPartStepAction,
DownloadThreadsSemaphore = ip.DownloadThreadsSemaphore_2,
WaitIfPausedEvent = ip.WaitIfPausedEvent,
WaitingIfPausedBefore = ip.WaitingIfPausedBefore_2,
WaitingIfPausedAfter = ip.WaitingIfPausedAfter_2,
};
//-1-//
var task_download = Task.Run( () =>
{
try
{
for ( var n = 1; sourceQueue.Count != 0; n++ )
{
#region [.check 'waitIfPausedEvent'.]
if ( !ip.WaitIfPausedEvent.IsSet )
{
ip.WaitingIfPaused?.Invoke();
ip.WaitIfPausedEvent.Wait( joinedCts.Token );
throttlerBySpeed_User.Restart();
}
#endregion
ip.DownloadThreadsSemaphore.Wait( /*ct*/ joinedCts.Token );
var part = sourceQueue.Dequeue();
var rq = RequestStepActionParams.CreateSuccess( totalPatrs, n, part );
ip.RequestStepAction?.Invoke( rq );
part.SetStreamHolder( ip.StreamPool.GetHolder() );
//---#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
ip.mc.DownloadPart( part, baseAddress, t, /*ct*/ joinedCts.Token, requestHeaders )
.ContinueWith( continuationTask =>
{
//#region [.throttler by speed.]
//var instantSpeedInMbps = throttlerBySpeed_User.Throttle( joinedCts.Token );
//#endregion
var rsp = new ResponseStepActionParams( totalPatrs/*, instantSpeedInMbps*/ );
if ( continuationTask.IsFaulted )
{
Interlocked.Increment( ref expectedPartNumber );
part.SetError( continuationTask.Exception );
rsp.SuccessReceivedPartCount = successReceivedPartCount;
rsp.FailedReceivedPartCount = Interlocked.Increment( ref failedReceivedPartCount );
rsp.Part = part;
ip.ResponseStepAction?.Invoke( rsp );
innerCts.Cancel();
}
else if ( !continuationTask.IsCanceled )
{
var downloadPart = continuationTask.Result;
if ( downloadPart.Error != null )
{
rsp.SuccessReceivedPartCount = successReceivedPartCount;
rsp.FailedReceivedPartCount = Interlocked.Increment( ref failedReceivedPartCount );
}
else
{
rsp.SuccessReceivedPartCount = Interlocked.Increment( ref successReceivedPartCount );
rsp.FailedReceivedPartCount = failedReceivedPartCount;
rsp.BytesLength = (int) downloadPart.Stream.Length;
//throttlerBySpeed_User.TakeIntoAccountDownloadedBytes( (int) downloadPart.Stream.Length );
}
rsp.Part = downloadPart;
ip.ResponseStepAction?.Invoke( rsp );
lock ( downloadPartsSet )
{
downloadPartsSet.Add( downloadPart );
canExtractPartEvent.Set();
}
}
}
, /*ct*/ joinedCts.Token );
//---#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
}
}
catch ( Exception ex )
{
Debug.WriteLine( ex );
throw;
}
}
, /*ct*/ joinedCts.Token );
//-2-//
for ( var localReadyParts = new Queue< m3u8_part_ts__v2 >( Math.Min( 0x1000, ip.MaxDegreeOfParallelism ) );
expectedPartNumber <= maxPartNumber; )
{
var idx = WaitHandle.WaitAny( [canExtractPartEvent /*0*/, /*ct*/ joinedCts.Token.WaitHandle /*1*/] );
if ( idx == 1 ) //[ct.IsCancellationRequested := 1]
break;
if ( idx != 0 ) //[canExtractPartEvent := 0]
continue;
lock ( downloadPartsSet )
{
for ( ; downloadPartsSet.Count != 0; )
{
var min_part = downloadPartsSet.Min;
if ( expectedPartNumber == min_part.OrderNumber )
{
downloadPartsSet.Remove( min_part );
Interlocked.Increment( ref expectedPartNumber );
ip.DownloadThreadsSemaphore.Release();
localReadyParts.Enqueue( min_part );
}
else
{
break;
}
}
}
for ( ; localReadyParts.Count != 0; )
{
var part = localReadyParts.Dequeue();
yield return (part);
}
}
//-3.0-//
if ( innerCts.IsCancellationRequested ) throw (new m3u8_Exception( "Canceled after part download error" ));
//-3-//
task_download.Wait();
}
//-4-//
ip.CancellationToken.ThrowIfCancellationRequested();
}
#if NETCOREAPP
private static async IAsyncEnumerable< m3u8_part_ts__v2 > download_m3u8File_parts_parallel_Async( DownloadPartsAndSaveInputParams ip, IDictionary< string, string > requestHeaders = null )
{
var m3u8File = ip.m3u8File;
var baseAddress = m3u8File.BaseAddress;
var totalPatrs = m3u8File.Parts.Count;
var successReceivedPartCount = 0;
var failedReceivedPartCount = 0;
ip.ResponseStepAction?.Invoke( new ResponseStepActionParams( totalPatrs ) );
var expectedPartNumber = m3u8File.Parts.FirstOrDefault().OrderNumber;
var maxPartNumber = m3u8File.Parts.LastOrDefault ().OrderNumber;
var sourceQueue = new Queue< m3u8_part_ts__v2 >( m3u8File.Parts );
var downloadPartsSet = new SortedSet< m3u8_part_ts__v2 >( m3u8_part_ts__v2.Comparer.Inst );
using ( var throttlerBySpeed_User = ThrottlerBySpeed_InDownloadProcessUser.Start( ip.ThrottlerBySpeed ) )
using ( var innerCts = new CancellationTokenSource() )
using ( var joinedCts = CancellationTokenSource.CreateLinkedTokenSource( ip.CancellationToken, innerCts.Token ) )
using ( var canExtractPartEvent = new AutoResetEvent( false ) )
{
var t = new m3u8_client_next.DownloadPartInputParams()
{
ThrottlerBySpeed_User = throttlerBySpeed_User,
RespBufPool = ip.RespBufPool,
DownloadPartStepAction = ip.DownloadPartStepAction,
DownloadThreadsSemaphore = ip.DownloadThreadsSemaphore_2,
WaitIfPausedEvent = ip.WaitIfPausedEvent,
WaitingIfPausedBefore = ip.WaitingIfPausedBefore_2,
WaitingIfPausedAfter = ip.WaitingIfPausedAfter_2,
};
//-1-//
var task_download = Task.Run( () =>
{
try
{
for ( var n = 1; sourceQueue.Count != 0; n++ )
{
#region [.check 'waitIfPausedEvent'.]
if ( !ip.WaitIfPausedEvent.IsSet )
{
ip.WaitingIfPaused?.Invoke();
ip.WaitIfPausedEvent.Wait( joinedCts.Token );
throttlerBySpeed_User.Restart();
}
#endregion
ip.DownloadThreadsSemaphore.Wait( /*ct*/ joinedCts.Token );
var part = sourceQueue.Dequeue();
var rq = RequestStepActionParams.CreateSuccess( totalPatrs, n, part );
ip.RequestStepAction?.Invoke( rq );
part.SetStreamHolder( ip.StreamPool.GetHolder() );
//---#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
ip.mc.DownloadPart( part, baseAddress, t,/*ct*/ joinedCts.Token, requestHeaders )
.ContinueWith( continuationTask =>
{
//#region [.throttler by speed.]
//var instantSpeedInMbps = throttlerBySpeed_User.Throttle( joinedCts.Token );
//#endregion
var rsp = new ResponseStepActionParams( totalPatrs/*, instantSpeedInMbps*/ );
if ( continuationTask.IsFaulted )
{
Interlocked.Increment( ref expectedPartNumber );
part.SetError( continuationTask.Exception );
rsp.SuccessReceivedPartCount = successReceivedPartCount;
rsp.FailedReceivedPartCount = Interlocked.Increment( ref failedReceivedPartCount );
rsp.Part = part;
ip.ResponseStepAction?.Invoke( rsp );
innerCts.Cancel();
}
else if ( !continuationTask.IsCanceled )
{
var downloadPart = continuationTask.Result;
if ( downloadPart.Error != null )
{
rsp.SuccessReceivedPartCount = successReceivedPartCount;
rsp.FailedReceivedPartCount = Interlocked.Increment( ref failedReceivedPartCount );
}
else
{
rsp.SuccessReceivedPartCount = Interlocked.Increment( ref successReceivedPartCount );
rsp.FailedReceivedPartCount = failedReceivedPartCount;
rsp.BytesLength = (int) downloadPart.Stream.Length;
//throttlerBySpeed_User.TakeIntoAccountDownloadedBytes( (int) downloadPart.Stream.Length );
}
rsp.Part = downloadPart;
ip.ResponseStepAction?.Invoke( rsp );
lock ( downloadPartsSet )
{
downloadPartsSet.Add( downloadPart );
canExtractPartEvent.Set();
}
}
}
, /*ct*/ joinedCts.Token );
//---#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
}
}
catch ( Exception ex )
{
Debug.WriteLine( ex );
throw;
}
}
, /*ct*/ joinedCts.Token );
//-2-//
for ( var localReadyParts = new Queue< m3u8_part_ts__v2 >( Math.Min( 0x1000, ip.MaxDegreeOfParallelism ) );
expectedPartNumber <= maxPartNumber; )
{
var idx = WaitHandle.WaitAny( [canExtractPartEvent /*0*/, /*ct*/ joinedCts.Token.WaitHandle /*1*/] );
if ( idx == 1 ) //[ct.IsCancellationRequested := 1]
break;
if ( idx != 0 ) //[canExtractPartEvent := 0]
continue;
lock ( downloadPartsSet )
{
for ( ; downloadPartsSet.Count != 0; )
{
var min_part = downloadPartsSet.Min;
if ( expectedPartNumber == min_part.OrderNumber )
{
downloadPartsSet.Remove( min_part );
Interlocked.Increment( ref expectedPartNumber );
ip.DownloadThreadsSemaphore.Release();
localReadyParts.Enqueue( min_part );
}
else
{
break;
}
}
}
for ( ; localReadyParts.Count != 0; )
{
var part = localReadyParts.Dequeue();
yield return (part);
}
}
//-3.0-//
if ( innerCts.IsCancellationRequested ) throw (new m3u8_Exception( "Canceled after part download error" ));
//-3-//
await task_download.CAX();
}
//-4-//
ip.CancellationToken.ThrowIfCancellationRequested();
}
#endif
[M(O.AggressiveInlining)] private static Task CopyToAsyncEx( this Stream source, Stream destination, CancellationToken ct )
{
source.Seek( 0, SeekOrigin.Begin );
#if NETCOREAPP
return (source.CopyToAsync( destination, ct ));
#else
return (source.CopyToAsync( destination, bufferSize: 80 * 1_024/*81920*/, ct ));
#endif
}
//-----------------------------------------------------------------------------//
/// <summary>
///
/// </summary>
public struct RequestStepActionParams
{
public int TotalPartCount { get; private set; }
public int PartOrderNumber { get; private set; }
public m3u8_part_ts__v2 Part { get; private set; }
public Exception Error { get; private set; }
public bool Success => (Error == null);
internal RequestStepActionParams SetError( Exception error )
{
Error = error;
return (this);
}
internal static RequestStepActionParams CreateSuccess( int totalPartCount, int partOrderNumber, in m3u8_part_ts__v2 part )
=> new RequestStepActionParams() { TotalPartCount = totalPartCount, PartOrderNumber = partOrderNumber, Part = part };
}
/// <summary>
///
/// </summary>
public delegate void RequestStepActionDelegate( in RequestStepActionParams p );
/// <summary>
///
/// </summary>
public struct ResponseStepActionParams
{
internal ResponseStepActionParams( int totalPartCount/*, double? instantSpeedInMbps = null*/ )
{
TotalPartCount = totalPartCount;
//InstantSpeedInMbps = instantSpeedInMbps;
}
public int TotalPartCount { get; }
//public double? InstantSpeedInMbps { get; }
public int SuccessReceivedPartCount { get; internal set; }
public int FailedReceivedPartCount { get; internal set; }
public int BytesLength { get; internal set; }
public m3u8_part_ts__v2 Part { get; internal set; }
}
/// <summary>
///
/// </summary>
public delegate void ResponseStepActionDelegate( in ResponseStepActionParams p );
//-----------------------------------------------------------------------------//
/// <summary>
///
/// </summary>
public struct DownloadPartsAndSaveInputParams
{
public m3u8_client_next mc { [M(O.AggressiveInlining)] get; set; }
public m3u8_file_t__v2 m3u8File { [M(O.AggressiveInlining)] get; set; }
public string OutputFileName { [M(O.AggressiveInlining)] get; set; }
public CancellationToken CancellationToken { [M(O.AggressiveInlining)] get; set; }
public RequestStepActionDelegate RequestStepAction { [M(O.AggressiveInlining)] get; set; }
public ResponseStepActionDelegate ResponseStepAction { [M(O.AggressiveInlining)] get; set; }
public int MaxDegreeOfParallelism { [M(O.AggressiveInlining)] get; set; }
public I_download_threads_semaphore DownloadThreadsSemaphore { [M(O.AggressiveInlining)] get; set; }
public I_download_threads_semaphore DownloadThreadsSemaphore_2 { [M(O.AggressiveInlining)] get; set; }
public ManualResetEventSlim WaitIfPausedEvent { [M(O.AggressiveInlining)] get; set; }
public Action WaitingIfPaused { [M(O.AggressiveInlining)] get; set; }
public Action< m3u8_part_ts__v2 > WaitingIfPausedBefore_2 { [M(O.AggressiveInlining)] get; set; }
public Action< m3u8_part_ts__v2 > WaitingIfPausedAfter_2 { [M(O.AggressiveInlining)] get; set; }
public I_throttler_by_speed_t ThrottlerBySpeed { [M(O.AggressiveInlining)] get; set; }
public ObjectPool< Stream > StreamPool { [M(O.AggressiveInlining)] get; set; }
public ObjectPool< byte[] > RespBufPool { [M(O.AggressiveInlining)] get; set; }
public m3u8_client_next.DownloadPartStepActionDelegate DownloadPartStepAction { [M(O.AggressiveInlining)] get; set; }
}
/// <summary>
///
/// </summary>
public struct DownloadPartsAndSaveResult
{
internal DownloadPartsAndSaveResult( string outputFileName ) : this() => OutputFileName = outputFileName;
public string OutputFileName { get; private set; }
public int PartsSuccessCount { get; internal set; }
public int PartsErrorCount { get; internal set; }
public ulong TotalBytes { get; internal set; }
public int TotalParts => (PartsSuccessCount + PartsErrorCount);
public void ResetOutputFileName( string outputFileName ) => OutputFileName = outputFileName;
public bool IsEmpty() => ((OutputFileName == null) && (PartsSuccessCount == 0) && (PartsErrorCount == 0) && (TotalBytes == 0UL));
}
public static async Task< DownloadPartsAndSaveResult > DownloadPartsAndSave( DownloadPartsAndSaveInputParams ip, IDictionary< string, string > requestHeaders = null )
{
if ( ip.mc == null ) throw (new m3u8_ArgumentException( nameof(ip.mc) ));
if ( !ip.m3u8File.Parts.AnyEx() ) throw (new m3u8_ArgumentException( nameof(ip.m3u8File) ));
if ( ip.OutputFileName.IsNullOrWhiteSpace() ) throw (new m3u8_ArgumentException( nameof(ip.OutputFileName) ));
if ( ip.DownloadThreadsSemaphore == null ) throw (new m3u8_ArgumentException( nameof(ip.DownloadThreadsSemaphore) ));
if ( ip.DownloadThreadsSemaphore_2 == null ) throw (new m3u8_ArgumentException( nameof(ip.DownloadThreadsSemaphore_2) ));
if ( ip.WaitIfPausedEvent == null ) throw (new m3u8_ArgumentException( nameof(ip.WaitIfPausedEvent) ));
if ( ip.StreamPool == null ) throw (new m3u8_ArgumentException( nameof(ip.StreamPool) ));
if ( ip.RespBufPool == null ) throw (new m3u8_ArgumentException( nameof(ip.RespBufPool) ));
//---------------------------------------------------------------------------------------------------------//
//-1-//
var res = new DownloadPartsAndSaveResult( ip.OutputFileName );
//-2-//
var downloadParts = download_m3u8File_parts_parallel( ip, requestHeaders );
//-3.1-//
var directoryName = Path.GetDirectoryName( ip.OutputFileName );
if ( !Directory.Exists( directoryName ) ) Directory.CreateDirectory( directoryName );
//-3.2-//
using ( var fs = Extensions.File_Open4Write( ip.OutputFileName ) )
{
foreach ( var downloadPart in downloadParts )
{
using ( downloadPart )
{
if ( downloadPart.Error != null )
{
res.PartsErrorCount++;
continue;
}
await downloadPart.Stream.CopyToAsyncEx( fs, ip.CancellationToken ).CAX();
res.PartsSuccessCount++;
res.TotalBytes += (uint) downloadPart.Stream.Length;
}
}
}
return (res);
}
#if NETCOREAPP
public static async Task< DownloadPartsAndSaveResult > DownloadPartsAndSave_Async( DownloadPartsAndSaveInputParams ip, IDictionary< string, string > requestHeaders = null )
{
if ( ip.mc == null ) throw (new m3u8_ArgumentException( nameof(ip.mc) ));
if ( !ip.m3u8File.Parts.AnyEx() ) throw (new m3u8_ArgumentException( nameof(ip.m3u8File) ));
if ( ip.OutputFileName.IsNullOrWhiteSpace() ) throw (new m3u8_ArgumentException( nameof(ip.OutputFileName) ));
if ( ip.DownloadThreadsSemaphore == null ) throw (new m3u8_ArgumentException( nameof(ip.DownloadThreadsSemaphore) ));
if ( ip.WaitIfPausedEvent == null ) throw (new m3u8_ArgumentException( nameof(ip.WaitIfPausedEvent) ));
if ( ip.StreamPool == null ) throw (new m3u8_ArgumentException( nameof(ip.StreamPool) ));
//---------------------------------------------------------------------------------------------------------//
//-1-//
var res = new DownloadPartsAndSaveResult( ip.OutputFileName );
//-2-//
var downloadParts = download_m3u8File_parts_parallel_Async( ip, requestHeaders );
//-3.1-//
var directoryName = Path.GetDirectoryName( ip.OutputFileName );
if ( !Directory.Exists( directoryName ) ) Directory.CreateDirectory( directoryName );
//-3.2-//
using ( var fs = Extensions.File_Open4Write( ip.OutputFileName ) )
{
await foreach ( var downloadPart in downloadParts )
{
using ( downloadPart )
{
if ( downloadPart.Error != null )
{
res.PartsErrorCount++;
continue;
}
await downloadPart.Stream.CopyToAsyncEx( fs, ip.CancellationToken ).CAX();
res.PartsSuccessCount++;
res.TotalBytes += (uint) downloadPart.Stream.Length;
}
}
}
return (res);
}
#endif
//-----------------------------------------------------------------------------//
}
}
#if !NETCOREAPP
namespace System.Runtime.CompilerServices
{
/// <summary>
///
/// </summary>
internal static class IsExternalInit { }
}
#endif