mirror of https://github.com/ErsatzTV/ErsatzTV.git
Browse Source
* refactor graphics engine; async frame generation * add text graphics element to playback troubleshootingpull/2283/head
Jason Dove
12 months ago
committed by
GitHub
44 changed files with 13399 additions and 211 deletions
@ -0,0 +1,3 @@
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|
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namespace ErsatzTV.Application.Graphics; |
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public record RefreshGraphicsElements : IRequest, IBackgroundServiceRequest; |
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using ErsatzTV.Core; |
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using ErsatzTV.Core.Domain; |
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using ErsatzTV.Core.Interfaces.Metadata; |
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using ErsatzTV.Infrastructure.Data; |
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using Microsoft.EntityFrameworkCore; |
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using Microsoft.Extensions.Logging; |
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namespace ErsatzTV.Application.Graphics; |
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public class RefreshGraphicsElementsHandler( |
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IDbContextFactory<TvContext> dbContextFactory, |
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ILocalFileSystem localFileSystem, |
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ILogger<RefreshGraphicsElementsHandler> logger) |
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: IRequestHandler<RefreshGraphicsElements> |
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{ |
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public async Task Handle(RefreshGraphicsElements request, CancellationToken cancellationToken) |
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{ |
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await using TvContext dbContext = await dbContextFactory.CreateDbContextAsync(cancellationToken); |
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// cleanup existing elements
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var allExisting = await dbContext.GraphicsElements |
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.ToListAsync(cancellationToken); |
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foreach (var existing in allExisting.Where(e => !localFileSystem.FileExists(e.Path))) |
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{ |
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logger.LogWarning( |
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"Removing graphics element that references non-existing file {File}", |
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existing.Path); |
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dbContext.GraphicsElements.Remove(existing); |
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} |
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// add new elements
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var newPaths = localFileSystem.ListFiles(FileSystemLayout.GraphicsElementsTextTemplatesFolder) |
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.Where(f => allExisting.All(e => e.Path != f)) |
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.ToList(); |
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foreach (var path in newPaths) |
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{ |
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logger.LogDebug("Adding new graphics element from file {File}", path); |
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var graphicsElement = new GraphicsElement |
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{ |
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Path = path, |
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Kind = GraphicsElementKind.Text |
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}; |
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await dbContext.AddAsync(graphicsElement, cancellationToken); |
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} |
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await dbContext.SaveChangesAsync(cancellationToken); |
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} |
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} |
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namespace ErsatzTV.Application.Graphics; |
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public record GraphicsElementViewModel(int Id, string Name); |
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using ErsatzTV.Core.Domain; |
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namespace ErsatzTV.Application.Graphics; |
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public static class Mapper |
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{ |
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public static GraphicsElementViewModel ProjectToViewModel(GraphicsElement graphicsElement) |
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{ |
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var fileName = Path.GetFileName(graphicsElement.Path); |
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return graphicsElement.Kind switch |
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{ |
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GraphicsElementKind.Text => new GraphicsElementViewModel(graphicsElement.Id, $"text/{fileName}"), |
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_ => new GraphicsElementViewModel(graphicsElement.Id, graphicsElement.Path) |
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}; |
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} |
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} |
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namespace ErsatzTV.Application.Graphics; |
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public record GetAllGraphicsElements : IRequest<List<GraphicsElementViewModel>>; |
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using ErsatzTV.Infrastructure.Data; |
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using Microsoft.EntityFrameworkCore; |
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using static ErsatzTV.Application.Graphics.Mapper; |
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namespace ErsatzTV.Application.Graphics; |
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public class GetAllGraphicsElementsHandler(IDbContextFactory<TvContext> dbContextFactory) |
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: IRequestHandler<GetAllGraphicsElements, List<GraphicsElementViewModel>> |
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{ |
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public async Task<List<GraphicsElementViewModel>> Handle( |
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GetAllGraphicsElements request, |
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CancellationToken cancellationToken) |
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{ |
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await using TvContext dbContext = await dbContextFactory.CreateDbContextAsync(cancellationToken); |
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return await dbContext.GraphicsElements |
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.ToListAsync(cancellationToken) |
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.Map(list => list.Map(ProjectToViewModel).ToList()); |
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} |
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} |
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namespace ErsatzTV.Core.Domain; |
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public class GraphicsElement |
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{ |
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public int Id { get; set; } |
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public string Path { get; set; } |
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public GraphicsElementKind Kind { get; set; } |
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public List<PlayoutItem> PlayoutItems { get; set; } |
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public List<PlayoutItemGraphicsElement> PlayoutItemGraphicsElements { get; set; } |
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} |
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namespace ErsatzTV.Core.Domain; |
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public enum GraphicsElementKind |
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{ |
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Image = 0, |
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Text = 1 |
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} |
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namespace ErsatzTV.Core.Domain; |
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public class PlayoutItemGraphicsElement |
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{ |
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public int PlayoutItemId { get; set; } |
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public PlayoutItem PlayoutItem { get; set; } |
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public int? GraphicsElementId { get; set; } |
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public GraphicsElement GraphicsElement { get; set; } |
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} |
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using ErsatzTV.FFmpeg.State; |
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using YamlDotNet.Serialization; |
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using YamlDotNet.Serialization.NamingConventions; |
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namespace ErsatzTV.Core.Graphics; |
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public class TextGraphicsElement |
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{ |
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public int? Opacity { get; set; } |
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[YamlMember(Alias = "opacity_expression", ApplyNamingConventions = false)] |
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public string OpacityExpression { get; set; } |
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public WatermarkLocation Location { get; set; } |
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[YamlMember(Alias = "horizontal_margin_percent", ApplyNamingConventions = false)] |
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public double? HorizontalMarginPercent { get; set; } |
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[YamlMember(Alias = "vertical_margin_percent", ApplyNamingConventions = false)] |
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public double? VerticalMarginPercent { get; set; } |
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[YamlMember(Alias = "horizontal_alignment", ApplyNamingConventions = false)] |
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public string HorizontalAlignment { get; set; } |
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[YamlMember(Alias = "location_x", ApplyNamingConventions = false)] |
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public double? LocationX { get; set; } |
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[YamlMember(Alias = "location_y", ApplyNamingConventions = false)] |
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public double? LocationY { get; set; } |
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[YamlMember(Alias = "z_index", ApplyNamingConventions = false)] |
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public int? ZIndex { get; set; } |
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[YamlMember(Alias = "font_family", ApplyNamingConventions = false)] |
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public string FontFamily { get; set; } |
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[YamlMember(Alias = "font_size", ApplyNamingConventions = false)] |
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public int? FontSize { get; set; } |
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[YamlMember(Alias = "font_color", ApplyNamingConventions = false)] |
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public string FontColor { get; set; } |
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public string Text { get; set; } |
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public static async Task<Option<TextGraphicsElement>> FromFile(string fileName) |
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{ |
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try |
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{ |
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string yaml = await File.ReadAllTextAsync(fileName); |
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// TODO: validate schema
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// if (await yamlScheduleValidator.ValidateSchedule(yaml, isImport) == false)
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// {
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// return Option<YamlPlayoutDefinition>.None;
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// }
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IDeserializer deserializer = new DeserializerBuilder() |
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.WithNamingConvention(CamelCaseNamingConvention.Instance) |
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.Build(); |
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return deserializer.Deserialize<TextGraphicsElement>(yaml); |
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} |
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catch (Exception) |
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{ |
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return Option<TextGraphicsElement>.None; |
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} |
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} |
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} |
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File diff suppressed because it is too large
Load Diff
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using Microsoft.EntityFrameworkCore.Metadata; |
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using Microsoft.EntityFrameworkCore.Migrations; |
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#nullable disable |
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namespace ErsatzTV.Infrastructure.MySql.Migrations |
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{ |
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/// <inheritdoc />
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public partial class Add_PlayoutItemGraphicsElement : Migration |
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{ |
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/// <inheritdoc />
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protected override void Up(MigrationBuilder migrationBuilder) |
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{ |
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migrationBuilder.CreateTable( |
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name: "GraphicsElement", |
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columns: table => new |
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{ |
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Id = table.Column<int>(type: "int", nullable: false) |
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.Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn), |
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Path = table.Column<string>(type: "longtext", nullable: true) |
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.Annotation("MySql:CharSet", "utf8mb4"), |
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Kind = table.Column<int>(type: "int", nullable: false) |
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}, |
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constraints: table => |
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{ |
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table.PrimaryKey("PK_GraphicsElement", x => x.Id); |
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}) |
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.Annotation("MySql:CharSet", "utf8mb4"); |
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migrationBuilder.CreateTable( |
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name: "PlayoutItemGraphicsElement", |
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columns: table => new |
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{ |
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PlayoutItemId = table.Column<int>(type: "int", nullable: false), |
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GraphicsElementId = table.Column<int>(type: "int", nullable: false) |
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}, |
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constraints: table => |
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{ |
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table.PrimaryKey("PK_PlayoutItemGraphicsElement", x => new { x.PlayoutItemId, x.GraphicsElementId }); |
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table.ForeignKey( |
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name: "FK_PlayoutItemGraphicsElement_GraphicsElement_GraphicsElementId", |
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column: x => x.GraphicsElementId, |
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principalTable: "GraphicsElement", |
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principalColumn: "Id", |
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onDelete: ReferentialAction.Cascade); |
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table.ForeignKey( |
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name: "FK_PlayoutItemGraphicsElement_PlayoutItem_PlayoutItemId", |
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column: x => x.PlayoutItemId, |
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principalTable: "PlayoutItem", |
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principalColumn: "Id", |
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onDelete: ReferentialAction.Cascade); |
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}) |
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.Annotation("MySql:CharSet", "utf8mb4"); |
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migrationBuilder.CreateIndex( |
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name: "IX_PlayoutItemGraphicsElement_GraphicsElementId", |
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table: "PlayoutItemGraphicsElement", |
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column: "GraphicsElementId"); |
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} |
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/// <inheritdoc />
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protected override void Down(MigrationBuilder migrationBuilder) |
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{ |
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migrationBuilder.DropTable( |
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name: "PlayoutItemGraphicsElement"); |
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migrationBuilder.DropTable( |
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name: "GraphicsElement"); |
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} |
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} |
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} |
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File diff suppressed because it is too large
Load Diff
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using Microsoft.EntityFrameworkCore.Migrations; |
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#nullable disable |
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namespace ErsatzTV.Infrastructure.Sqlite.Migrations |
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{ |
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/// <inheritdoc />
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public partial class Add_PlayoutItemGraphicsElement : Migration |
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{ |
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/// <inheritdoc />
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protected override void Up(MigrationBuilder migrationBuilder) |
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{ |
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migrationBuilder.CreateTable( |
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name: "GraphicsElement", |
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columns: table => new |
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{ |
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Id = table.Column<int>(type: "INTEGER", nullable: false) |
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.Annotation("Sqlite:Autoincrement", true), |
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Path = table.Column<string>(type: "TEXT", nullable: true), |
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Kind = table.Column<int>(type: "INTEGER", nullable: false) |
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}, |
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constraints: table => |
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{ |
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table.PrimaryKey("PK_GraphicsElement", x => x.Id); |
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}); |
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migrationBuilder.CreateTable( |
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name: "PlayoutItemGraphicsElement", |
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columns: table => new |
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{ |
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PlayoutItemId = table.Column<int>(type: "INTEGER", nullable: false), |
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GraphicsElementId = table.Column<int>(type: "INTEGER", nullable: false) |
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}, |
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constraints: table => |
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{ |
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table.PrimaryKey("PK_PlayoutItemGraphicsElement", x => new { x.PlayoutItemId, x.GraphicsElementId }); |
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table.ForeignKey( |
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name: "FK_PlayoutItemGraphicsElement_GraphicsElement_GraphicsElementId", |
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column: x => x.GraphicsElementId, |
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principalTable: "GraphicsElement", |
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principalColumn: "Id", |
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onDelete: ReferentialAction.Cascade); |
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table.ForeignKey( |
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name: "FK_PlayoutItemGraphicsElement_PlayoutItem_PlayoutItemId", |
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column: x => x.PlayoutItemId, |
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principalTable: "PlayoutItem", |
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principalColumn: "Id", |
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onDelete: ReferentialAction.Cascade); |
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}); |
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|
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migrationBuilder.CreateIndex( |
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name: "IX_PlayoutItemGraphicsElement_GraphicsElementId", |
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table: "PlayoutItemGraphicsElement", |
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column: "GraphicsElementId"); |
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} |
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|
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/// <inheritdoc />
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protected override void Down(MigrationBuilder migrationBuilder) |
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{ |
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migrationBuilder.DropTable( |
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name: "PlayoutItemGraphicsElement"); |
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migrationBuilder.DropTable( |
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name: "GraphicsElement"); |
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} |
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} |
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} |
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using ErsatzTV.Core.Domain; |
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using Microsoft.EntityFrameworkCore; |
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using Microsoft.EntityFrameworkCore.Metadata.Builders; |
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namespace ErsatzTV.Infrastructure.Data.Configurations; |
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public class GraphicsElementConfiguration : IEntityTypeConfiguration<GraphicsElement> |
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{ |
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public void Configure(EntityTypeBuilder<GraphicsElement> builder) => builder.ToTable("GraphicsElement"); |
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} |
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using System.Collections.Concurrent; |
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using System.Globalization; |
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using SixLabors.Fonts; |
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namespace ErsatzTV.Infrastructure.Streaming; |
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public static class GraphicsEngineFonts |
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{ |
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private static readonly FontCollection CustomFontCollection = new(); |
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private static readonly ConcurrentDictionary<string, FontFamily> CustomFontFamilies = new(); |
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private static bool _fontsLoaded; |
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public static void LoadFonts(string fontsFolder) |
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{ |
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if (_fontsLoaded) |
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{ |
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return; |
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} |
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foreach (var file in Directory.GetFiles(fontsFolder, "*.*", SearchOption.AllDirectories)) |
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{ |
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if (file.EndsWith(".ttf", StringComparison.OrdinalIgnoreCase) || |
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file.EndsWith(".otf", StringComparison.OrdinalIgnoreCase)) |
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{ |
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var fontFamily = CustomFontCollection.Add(file, CultureInfo.CurrentCulture); |
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CustomFontFamilies.TryAdd(fontFamily.Name, fontFamily); |
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} |
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} |
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_fontsLoaded = true; |
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} |
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public static Font GetFont(string fontFamilyName, float fontSize, FontStyle style) |
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{ |
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// try custom fonts
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if (CustomFontFamilies.TryGetValue(fontFamilyName, out var customFamily)) |
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{ |
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return customFamily.GetAvailableStyles().Contains(style) |
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? customFamily.CreateFont(fontSize, style) |
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: customFamily.CreateFont(fontSize); |
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} |
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// fallback to system fonts
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if (SystemFonts.TryGet(fontFamilyName, CultureInfo.CurrentCulture, out var systemFamily)) |
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{ |
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return systemFamily.GetAvailableStyles().Contains(style) |
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? systemFamily.CreateFont(fontSize, style) |
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: systemFamily.CreateFont(fontSize); |
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} |
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|
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// fallback to default font
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var fallback = SystemFonts.Families.First(); |
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return fallback.CreateFont(fontSize, style); |
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} |
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} |
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using System.Globalization; |
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using NCalc; |
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using NCalc.Handlers; |
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namespace ErsatzTV.Infrastructure.Streaming; |
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|
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public static class OpacityExpressionHelper |
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{ |
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public static void EvaluateFunction(string name, FunctionArgs args) |
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{ |
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switch (name) |
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{ |
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case "LinearFadePoints": |
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{ |
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if (args.Parameters.Length != 5) |
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{ |
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throw new ArgumentException("LinearFadePoints() requires 5 arguments."); |
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} |
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|
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double time = Convert.ToDouble(args.Parameters[0].Evaluate(), CultureInfo.CurrentCulture); |
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double start = Convert.ToDouble(args.Parameters[1].Evaluate(), CultureInfo.CurrentCulture); |
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double peakStart = Convert.ToDouble(args.Parameters[2].Evaluate(), CultureInfo.CurrentCulture); |
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double peakEnd = Convert.ToDouble(args.Parameters[3].Evaluate(), CultureInfo.CurrentCulture); |
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double end = Convert.ToDouble(args.Parameters[4].Evaluate(), CultureInfo.CurrentCulture); |
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args.Result = LinearFadePoints(time, start, peakStart, peakEnd, end); |
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break; |
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} |
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case "LinearFadeDuration": |
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{ |
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if (args.Parameters.Length != 4) |
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{ |
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throw new ArgumentException("LinearFadeDuration() requires 4 arguments."); |
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} |
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|
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double time = Convert.ToDouble(args.Parameters[0].Evaluate(), CultureInfo.CurrentCulture); |
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double start = Convert.ToDouble(args.Parameters[1].Evaluate(), CultureInfo.CurrentCulture); |
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double fadeSeconds = Convert.ToDouble(args.Parameters[2].Evaluate(), CultureInfo.CurrentCulture); |
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double peakSeconds = Convert.ToDouble(args.Parameters[3].Evaluate(), CultureInfo.CurrentCulture); |
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|
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args.Result = LinearFadeDuration(time, start, fadeSeconds, peakSeconds); |
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break; |
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} |
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} |
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} |
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|
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private static double LinearFadePoints(double time, double start, double peakStart, double peakEnd, double end) |
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{ |
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if (time < start || time >= end) |
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{ |
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return 0; |
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} |
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|
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// fade in
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if (time < peakStart) |
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{ |
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return (time - start) / (peakStart - start); |
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} |
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|
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// solid
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if (time < peakEnd) |
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{ |
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return 1.0; |
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} |
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|
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// fade out
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return (end - time) / (end - peakEnd); |
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} |
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|
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private static double LinearFadeDuration(double time, double start, double fadeSeconds, double peakSeconds) |
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{ |
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// edge case with no fade
|
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if (fadeSeconds <= 0) |
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{ |
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double noFadeEnd = start + peakSeconds; |
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return (time >= start && time < noFadeEnd) ? 1.0 : 0.0; |
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} |
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|
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double peakStart = start + fadeSeconds; |
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double peakEnd = peakStart + peakSeconds; |
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double end = peakEnd + fadeSeconds; |
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|
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return LinearFadePoints(time, start, peakStart, peakEnd, end); |
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} |
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|
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public static float GetOpacity( |
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Expression expression, |
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TimeSpan timeOfDay, |
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TimeSpan contentTime, |
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TimeSpan contentTotalTime, |
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TimeSpan channelTime) |
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{ |
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expression.Parameters["content_seconds"] = contentTime.TotalSeconds; |
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expression.Parameters["content_total_seconds"] = contentTotalTime.TotalSeconds; |
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expression.Parameters["channel_seconds"] = channelTime.TotalSeconds; |
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expression.Parameters["time_of_day_seconds"] = timeOfDay.TotalSeconds; |
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|
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object expressionResult = expression.Evaluate(); |
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return Convert.ToSingle(expressionResult, CultureInfo.InvariantCulture); |
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} |
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} |
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@ -0,0 +1,6 @@
@@ -0,0 +1,6 @@
|
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using SixLabors.ImageSharp; |
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using Image=SixLabors.ImageSharp.Image; |
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|
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namespace ErsatzTV.Infrastructure.Streaming; |
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|
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public record PreparedElementImage(Image Image, Point Point, float Opacity, bool Dispose); |
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@@ -0,0 +1,118 @@
|
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using ErsatzTV.Core.Domain; |
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using ErsatzTV.Core.Graphics; |
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using Microsoft.Extensions.Logging; |
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using NCalc; |
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using SixLabors.Fonts; |
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using SixLabors.ImageSharp; |
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using SixLabors.ImageSharp.Drawing.Processing; |
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using SixLabors.ImageSharp.PixelFormats; |
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using SixLabors.ImageSharp.Processing; |
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using Image=SixLabors.ImageSharp.Image; |
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|
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namespace ErsatzTV.Infrastructure.Streaming; |
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|
||||
public class TextElement(TextGraphicsElement textElement, ILogger logger) : IGraphicsElement, IDisposable |
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{ |
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private Option<Expression> _maybeOpacityExpression; |
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private float _opacity; |
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private Image _image; |
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private Point _location; |
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|
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public int ZIndex { get; private set; } |
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|
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public bool IsFailed { get; set; } |
||||
|
||||
public Task InitializeAsync(Resolution frameSize, int frameRate, CancellationToken cancellationToken) |
||||
{ |
||||
try |
||||
{ |
||||
if (!string.IsNullOrWhiteSpace(textElement.OpacityExpression)) |
||||
{ |
||||
var expression = new Expression(textElement.OpacityExpression); |
||||
expression.EvaluateFunction += OpacityExpressionHelper.EvaluateFunction; |
||||
_maybeOpacityExpression = expression; |
||||
} |
||||
else |
||||
{ |
||||
_opacity = (textElement.Opacity ?? 100) / 100.0f; |
||||
} |
||||
|
||||
ZIndex = textElement.ZIndex ?? 0; |
||||
|
||||
var font = GraphicsEngineFonts.GetFont(textElement.FontFamily, textElement.FontSize ?? 48, FontStyle.Regular); |
||||
var fontColor = Color.White; |
||||
if (Color.TryParse(textElement.FontColor, out Color parsedColor) || |
||||
Color.TryParseHex(textElement.FontColor, out parsedColor)) |
||||
{ |
||||
fontColor = parsedColor; |
||||
} |
||||
|
||||
var textOptions = new RichTextOptions(font) |
||||
{ |
||||
Origin = new PointF(0, 0), |
||||
HorizontalAlignment = HorizontalAlignment.Left |
||||
}; |
||||
|
||||
// if (Enum.TryParse(textElement.HorizontalAlignment, out HorizontalAlignment parsedAlignment))
|
||||
// {
|
||||
// textOptions.HorizontalAlignment = parsedAlignment;
|
||||
// }
|
||||
|
||||
FontRectangle textBounds = TextMeasurer.MeasureBounds(textElement.Text, textOptions); |
||||
textOptions.Origin = new PointF(-textBounds.X, -textBounds.Y); |
||||
|
||||
_image = new Image<Rgba32>((int)Math.Ceiling(textBounds.Width), (int)Math.Ceiling(textBounds.Height)); |
||||
_image.Mutate(ctx => ctx.DrawText(textOptions, textElement.Text, fontColor)); |
||||
|
||||
int horizontalMargin = (int)Math.Round((textElement.HorizontalMarginPercent ?? 0) / 100.0 * frameSize.Width); |
||||
int verticalMargin = (int)Math.Round((textElement.VerticalMarginPercent ?? 0) / 100.0 * frameSize.Height); |
||||
|
||||
_location = WatermarkElement.CalculatePosition( |
||||
textElement.Location, |
||||
frameSize.Width, |
||||
frameSize.Height, |
||||
_image.Width, |
||||
_image.Height, |
||||
horizontalMargin, |
||||
verticalMargin); |
||||
} |
||||
catch (Exception ex) |
||||
{ |
||||
IsFailed = true; |
||||
logger.LogWarning(ex, "Failed to initialize text element; will disable for this content"); |
||||
} |
||||
|
||||
return Task.CompletedTask; |
||||
} |
||||
|
||||
public ValueTask<Option<PreparedElementImage>> PrepareImage( |
||||
TimeSpan timeOfDay, |
||||
TimeSpan contentTime, |
||||
TimeSpan contentTotalTime, |
||||
TimeSpan channelTime, |
||||
CancellationToken cancellationToken) |
||||
{ |
||||
float opacity = _opacity; |
||||
foreach (var expression in _maybeOpacityExpression) |
||||
{ |
||||
opacity = OpacityExpressionHelper.GetOpacity( |
||||
expression, |
||||
timeOfDay, |
||||
contentTime, |
||||
contentTotalTime, |
||||
channelTime); |
||||
} |
||||
|
||||
return opacity == 0 |
||||
? ValueTask.FromResult(Option<PreparedElementImage>.None) |
||||
: new ValueTask<Option<PreparedElementImage>>(new PreparedElementImage(_image, _location, opacity, false)); |
||||
} |
||||
|
||||
public void Dispose() |
||||
{ |
||||
GC.SuppressFinalize(this); |
||||
|
||||
_image?.Dispose(); |
||||
_image = null; |
||||
} |
||||
} |
||||
Loading…
Reference in new issue