From 208e23de77ad6d104f13a0bb591ae16c4a805fe9 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Tue, 26 Oct 2021 23:20:45 +0800
Subject: *load image async

---
 Runtime/FileSystem/ImageJobs.cpp | 54 ++++++++++++++++++++++++++++++++++++++++
 Runtime/FileSystem/ImageJobs.h   | 46 ++++++++++++++++++++++++++++++++++
 2 files changed, 100 insertions(+)
 create mode 100644 Runtime/FileSystem/ImageJobs.cpp
 create mode 100644 Runtime/FileSystem/ImageJobs.h

(limited to 'Runtime/FileSystem')

diff --git a/Runtime/FileSystem/ImageJobs.cpp b/Runtime/FileSystem/ImageJobs.cpp
new file mode 100644
index 0000000..84e4ff3
--- /dev/null
+++ b/Runtime/FileSystem/ImageJobs.cpp
@@ -0,0 +1,54 @@
+#include "ImageJobs.h"
+#include "ThirdParty/stb/stb_image.h"
+#include "Runtime/Graphics/ImageData.h"
+
+//--------------------------------------------------------------------------
+
+ReadImageFileJob::ReadImageFileJob(LuaBind::VM* vm, int indexOfCallback, const char* path)
+	: isFinished(false)
+	, callback(vm)
+{
+	this->path = path;
+	LuaBind::State state = vm->GetCurThread();
+	callback.SetRef(state, indexOfCallback);
+}
+
+ReadImageFileJob::~ReadImageFileJob()
+{
+	callback.UnRef();
+	delete bridge.pixels; //for safe
+}
+
+void ReadImageFileJob::Process()
+{
+	stbi_set_flip_vertically_on_load(true);
+	bridge.pixels = stbi_load(path.c_str(), &bridge.width, &bridge.height, &bridge.channels, 0);
+	isFinished = true;
+}
+
+bool ReadImageFileJob::IsFinished()
+{
+	return isFinished;
+}
+
+// callback(imageData)
+void ReadImageFileJob::Dispacth(void* param)
+{
+	LUA_BIND_STATE((lua_State*)param);
+	
+	ImageData* imgData = new ImageData(state.GetVM());
+	imgData->pixels = bridge.pixels;
+	bridge.pixels = NULL;
+	imgData->width = bridge.width;
+	imgData->height = bridge.height;
+	imgData->format = ImageData::EPixelFormat::RGB;
+	imgData->type = ImageData::EPixelElementType::UNSIGNED_BYTE;
+
+	callback.PushRef(state);
+	imgData->PushUserdata(state);
+	state.Call(1, 0);
+}
+
+//--------------------------------------------------------------------------
+
+
diff --git a/Runtime/FileSystem/ImageJobs.h b/Runtime/FileSystem/ImageJobs.h
new file mode 100644
index 0000000..77e48e0
--- /dev/null
+++ b/Runtime/FileSystem/ImageJobs.h
@@ -0,0 +1,46 @@
+#pragma once
+#include <vector>
+#include "Runtime/Threading/Job.h"
+#include "Runtime/Lua/LuaHelper.h"
+#include "Runtime/Threading/JobSystem.h"
+
+struct ImageDataBridge
+{
+	void* pixels;
+	int width; 
+	int height; 
+	int channels;
+};
+
+// in: string 
+// out: ImageData
+class ReadImageFileJob : public Job
+{
+public:
+	ReadImageFileJob(LuaBind::VM* vm, int indexOfCallback, const char* path);
+	~ReadImageFileJob();
+
+	void Dispacth(void* param) override;
+	void Process() override;
+	bool IsFinished() override;
+
+private:
+	std::string path;
+	bool isFinished;
+	ImageDataBridge bridge;
+	LuaBind::StrongRef callback; // 完成后的回调函数
+};
+
+// in: string[] 
+// out: ImageData[] 
+class ReadImageFilesJob : public Job
+{
+
+};
+
+// in: DataBuffer[]
+// out: ImageData[]
+class DecodeImageFilesJob : public Job
+{
+
+};
\ No newline at end of file
-- 
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