Merge pull request #96 from saddam213/ControlNet

LCM ControlNet, SDXL ControlNet, InstaFlow ControlNet

Author: saddam213

OnnxStack.StableDiffusion/Diffusers/InstaFlow/ControlNetDiffuser.cs

@@ -0,0 +1,208 @@
+using Microsoft.Extensions.Logging;
+using Microsoft.ML.OnnxRuntime.Tensors;
+using OnnxStack.Core;
+using OnnxStack.Core.Config;
+using OnnxStack.Core.Model;
+using OnnxStack.Core.Services;
+using OnnxStack.StableDiffusion.Common;
+using OnnxStack.StableDiffusion.Config;
+using OnnxStack.StableDiffusion.Enums;
+using OnnxStack.StableDiffusion.Helpers;
+using OnnxStack.StableDiffusion.Models;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace OnnxStack.StableDiffusion.Diffusers.InstaFlow
+{
+    public class ControlNetDiffuser : InstaFlowDiffuser
+    {
+        private readonly IControlNetImageService _controlNetImageService;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ControlNetDiffuser"/> class.
+        /// </summary>
+        /// <param name="configuration">The configuration.</param>
+        /// <param name="onnxModelService">The onnx model service.</param>
+        public ControlNetDiffuser(IOnnxModelService onnxModelService, IPromptService promptService, IControlNetImageService controlNetImageService, ILogger<ControlNetDiffuser> logger)
+            : base(onnxModelService, promptService, logger)
+        {
+            _controlNetImageService = controlNetImageService;
+        }
+
+        /// <summary>
+        /// Gets the type of the diffuser.
+        /// </summary>
+        public override DiffuserType DiffuserType => DiffuserType.ControlNet;
+
+
+        /// <summary>
+        /// Called on each Scheduler step.
+        /// </summary>
+        /// <param name="modelOptions">The model options.</param>
+        /// <param name="promptOptions">The prompt options.</param>
+        /// <param name="schedulerOptions">The scheduler options.</param>
+        /// <param name="promptEmbeddings">The prompt embeddings.</param>
+        /// <param name="performGuidance">if set to <c>true</c> [perform guidance].</param>
+        /// <param name="progressCallback">The progress callback.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns></returns>
+        /// <exception cref="NotImplementedException"></exception>
+        protected override async Task<DenseTensor<float>> SchedulerStepAsync(ModelOptions modelOptions, PromptOptions promptOptions, SchedulerOptions schedulerOptions, PromptEmbeddingsResult promptEmbeddings, bool performGuidance, Action<DiffusionProgress> progressCallback = null, CancellationToken cancellationToken = default)
+        {
+            // Get Scheduler
+            using (var scheduler = GetScheduler(schedulerOptions))
+            {
+                // Get timesteps
+                var timesteps = GetTimesteps(schedulerOptions, scheduler);
+
+                // Create latent sample
+                var latents = await PrepareLatentsAsync(modelOptions, promptOptions, schedulerOptions, scheduler, timesteps);
+
+                // Get Model metadata
+                var metadata = _onnxModelService.GetModelMetadata(modelOptions.BaseModel, OnnxModelType.Unet);
+
+                // Get Model metadata
+                var controlNetMetadata = _onnxModelService.GetModelMetadata(modelOptions.ControlNetModel, OnnxModelType.ControlNet);
+
+                // Control Image
+                var controlImage = await PrepareControlImage(modelOptions, promptOptions, schedulerOptions);
+
+                // Get the distilled Timestep
+                var distilledTimestep = 1.0f / timesteps.Count;
+
+                // Loop though the timesteps
+                var step = 0;
+                foreach (var timestep in timesteps)
+                {
+                    step++;
+                    var stepTime = Stopwatch.GetTimestamp();
+                    cancellationToken.ThrowIfCancellationRequested();
+
+                    // Create input tensor.
+                    var inputLatent = performGuidance ? latents.Repeat(2) : latents;
+                    var inputTensor = scheduler.ScaleInput(inputLatent, timestep);
+                    var timestepTensor = CreateTimestepTensor(timestep);
+                    var controlImageTensor = performGuidance ? controlImage.Repeat(2) : controlImage;
+                    var conditioningScale = CreateConditioningScaleTensor(schedulerOptions.ConditioningScale);
+
+                    var outputChannels = performGuidance ? 2 : 1;
+                    var outputDimension = schedulerOptions.GetScaledDimension(outputChannels);
+                    using (var inferenceParameters = new OnnxInferenceParameters(metadata))
+                    {
+                        inferenceParameters.AddInputTensor(inputTensor);
+                        inferenceParameters.AddInputTensor(timestepTensor);
+                        inferenceParameters.AddInputTensor(promptEmbeddings.PromptEmbeds);
+
+                        // ControlNet
+                        using (var controlNetParameters = new OnnxInferenceParameters(controlNetMetadata))
+                        {
+                            controlNetParameters.AddInputTensor(inputTensor);
+                            controlNetParameters.AddInputTensor(timestepTensor);
+                            controlNetParameters.AddInputTensor(promptEmbeddings.PromptEmbeds);
+                            controlNetParameters.AddInputTensor(controlImage);
+                            if (controlNetMetadata.Inputs.Count == 5)
+                                controlNetParameters.AddInputTensor(conditioningScale);
+
+                            // Optimization: Pre-allocate device buffers for inputs
+                            foreach (var item in controlNetMetadata.Outputs)
+                                controlNetParameters.AddOutputBuffer();
+
+                            // ControlNet inference
+                            var controlNetResults = _onnxModelService.RunInference(modelOptions.ControlNetModel, OnnxModelType.ControlNet, controlNetParameters);
+
+                            // Add ControlNet outputs to Unet input
+                            foreach (var item in controlNetResults)
+                                inferenceParameters.AddInput(item);
+
+                            // Add output buffer
+                            inferenceParameters.AddOutputBuffer(outputDimension);
+
+                            // Unet inference
+                            var results = await _onnxModelService.RunInferenceAsync(modelOptions.BaseModel, OnnxModelType.Unet, inferenceParameters);
+                            using (var result = results.First())
+                            {
+                                var noisePred = result.ToDenseTensor();
+
+                                // Perform guidance
+                                if (performGuidance)
+                                    noisePred = PerformGuidance(noisePred, schedulerOptions.GuidanceScale);
+
+                                // Scheduler Step
+                                latents = scheduler.Step(noisePred, timestep, latents).Result;
+
+                                latents = noisePred
+                                    .MultiplyTensorByFloat(distilledTimestep)
+                                    .AddTensors(latents);
+                            }
+                        }
+                    }
+
+                    ReportProgress(progressCallback, step, timesteps.Count, latents);
+                    _logger?.LogEnd($"Step {step}/{timesteps.Count}", stepTime);
+                }
+
+                // Decode Latents
+                return await DecodeLatentsAsync(modelOptions, promptOptions, schedulerOptions, latents);
+            }
+        }
+
+
+        /// <summary>
+        /// Gets the timesteps.
+        /// </summary>
+        /// <param name="options">The options.</param>
+        /// <param name="scheduler">The scheduler.</param>
+        /// <returns></returns>
+        protected override IReadOnlyList<int> GetTimesteps(SchedulerOptions options, IScheduler scheduler)
+        {
+            return scheduler.Timesteps;
+        }
+
+
+        /// <summary>
+        /// Prepares the input latents.
+        /// </summary>
+        /// <param name="model">The model.</param>
+        /// <param name="prompt">The prompt.</param>
+        /// <param name="options">The options.</param>
+        /// <param name="scheduler">The scheduler.</param>
+        /// <param name="timesteps">The timesteps.</param>
+        /// <returns></returns>
+        protected override Task<DenseTensor<float>> PrepareLatentsAsync(ModelOptions model, PromptOptions prompt, SchedulerOptions options, IScheduler scheduler, IReadOnlyList<int> timesteps)
+        {
+            return Task.FromResult(scheduler.CreateRandomSample(options.GetScaledDimension(), scheduler.InitNoiseSigma));
+        }
+
+
+        /// <summary>
+        /// Creates the Conditioning Scale tensor.
+        /// </summary>
+        /// <param name="conditioningScale">The conditioningScale.</param>
+        /// <returns></returns>
+        protected static DenseTensor<double> CreateConditioningScaleTensor(float conditioningScale)
+        {
+            return TensorHelper.CreateTensor(new double[] { conditioningScale }, new int[] { 1 });
+        }
+
+
+        /// <summary>
+        /// Prepares the control image.
+        /// </summary>
+        /// <param name="promptOptions">The prompt options.</param>
+        /// <param name="schedulerOptions">The scheduler options.</param>
+        /// <returns></returns>
+        protected async Task<DenseTensor<float>> PrepareControlImage(ModelOptions modelOptions, PromptOptions promptOptions, SchedulerOptions schedulerOptions)
+        {
+            var controlImage = promptOptions.InputContolImage;
+            if (schedulerOptions.IsControlImageProcessingEnabled)
+            {
+                controlImage = await _controlNetImageService.PrepareInputImage(modelOptions.ControlNetModel, promptOptions.InputContolImage, schedulerOptions.Height, schedulerOptions.Width);
+            }
+            return controlImage.ToDenseTensor(new[] { 1, 3, schedulerOptions.Height, schedulerOptions.Width }, false);
+        }
+    }
+}