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Fix memory leaks while streaming

This commit is contained in:
danielgrabowski 2019-11-05 10:30:31 +01:00
parent d394f3a80f
commit ff77cbbe1d
6 changed files with 28 additions and 24 deletions
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2
Squirrowse.Client/Service/Camera.cs
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@ -9,7 +9,7 @@ namespace Squirrowse.Client.Service
private readonly int Height;
private readonly int Width;
public Camera(int height = 480, int width = 640, double fps = 15f)
public Camera(int height = 480, int width = 640, double fps = 30f)
{
Height = height;
Width = width;

15
Squirrowse.Client/Service/CameraService.cs
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@ -1,6 +1,4 @@
using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Collections.Generic;
using System.Threading.Tasks;
using OpenCvSharp;
using Squirrowse.Core.Services;
@ -10,6 +8,7 @@ namespace Squirrowse.Client.Service
public class CameraService : ICameraService
{
private readonly VideoCapture _videoCapture;
public CameraService(CameraFactory cam)
{
_videoCapture = cam.GetCamera();
@ -17,18 +16,16 @@ namespace Squirrowse.Client.Service
public async Task<Mat> GetFrame()
{
{
var video = _videoCapture.RetrieveMat();
return video;
}
public async IAsyncEnumerable<byte[]> GetFramesAsyncEnumerator()
{
while (true)
{
var fr = await GetFrame();
yield return fr.ConvertToJpgByte();
}
using var fr = await GetFrame();
yield return fr.ConvertToJpgByte();
//fr.Dispose();
}
}
}

10
Squirrowse.Client/Service/StreamService.cs
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@ -27,12 +27,10 @@ namespace Squirrowse.Client.Service
public async Task SendStreamAsync(IAsyncEnumerable<byte[]> asb)
{
while (true)
{
logger.LogInformation($"{nameof(SendStreamAsync)} Start stream");
await session.SendAsync("UploadByteStream", asb);
}
logger.LogInformation($"{nameof(SendStreamAsync)} Start stream");
await session.SendAsync("UploadByteStream", asb);
logger.LogInformation($"{nameof(SendStreamAsync)} End stream");
}
}
}

11
Squirrowse.Client/Worker.cs
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@ -3,6 +3,7 @@ using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using OpenCvSharp;
using Squirrowse.Client.Service;
namespace Squirrowse.Client
@ -22,14 +23,16 @@ namespace Squirrowse.Client
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
logger.LogInformation("Worker running at: {time}", DateTimeOffset.Now);
await streamService.SendStreamAsync(camera.GetFramesAsyncEnumerator());
// await Task.Delay(1000, stoppingToken);
// await Task.Delay(50, stoppingToken);
}
}
}
}

2
Squirrowse.Core/Services/ImgExtensions.cs
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@ -13,7 +13,7 @@ namespace Squirrowse.Core.Services
public static Mat ConvertByteToMat(this byte[] bytearr)
{
using var tempMat = Cv2.ImDecode(bytearr, ImreadModes.Unchanged); //keep as disposable
var tempMat = Cv2.ImDecode(bytearr, ImreadModes.Unchanged); //keep as disposable
return tempMat ?? new Mat();
}
}

12
Squirrowse.Service/Hubs/StreamHub.cs
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@ -3,7 +3,9 @@ using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.AspNetCore.SignalR;
using Microsoft.Extensions.Logging;
using OpenCvSharp;
using Squirrowse.Core.Models;
using Squirrowse.Core.Services;
namespace Squirrowse.Service.Hubs
{
@ -59,13 +61,17 @@ namespace Squirrowse.Service.Hubs
await client.SendAsync("Stop");
}
public Window okno = new Window("test");
public async Task UploadByteStream(IAsyncEnumerable<byte[]> stream)
{
await foreach (var frame in stream)
{
logger.LogInformation($"Got frame size: {frame.Length} ");
await Task.Delay(100); //leave some delay for debug purpose
using var imgbuffer = frame.ConvertByteToMat();
okno.ShowImage(imgbuffer);
Cv2.WaitKey(1);
// logger.LogInformation($"Got frame size: {frame.Length} ");
// await Task.Delay(100); //leave some delay for debug purpose
}
}
}