llm(三协议 Provider)/ session(JSONL 持久化)/ tools(Registry、围栏、 builtin、computer)/ cdp(browser)/ skills / mcp / agent(循环、两级压缩、 编排、审批门控)+ 底座 jsonl/textx/execx/diag/scratch/spill/imagecache。 产品装配代码(config 桥接、schedule 工具、memory/plan/retro/prompt) 留在 AutoGo,宿主接入方式见 MIGRATION.md。
111 lines
2.7 KiB
Go
111 lines
2.7 KiB
Go
package tools
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import (
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"bytes"
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"image"
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"image/color"
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"image/png"
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"os"
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"path/filepath"
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"testing"
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)
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// makePNG 生成 w×h 的纯色 PNG 文件(可压缩性差的真实体积)。
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func makePNG(t *testing.T, w, h int, noise bool) string {
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t.Helper()
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img := image.NewRGBA(image.Rect(0, 0, w, h))
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seed := uint32(1)
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next := func() uint8 {
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seed = seed*1664525 + 1013904223 // LCG 伪随机
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return uint8(seed >> 24)
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}
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for y := 0; y < h; y++ {
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for x := 0; x < w; x++ {
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if noise {
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// 逐像素伪随机:PNG 压不动,接近真实截图体积
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img.SetRGBA(x, y, color.RGBA{next(), next(), next(), 255})
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} else {
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img.SetRGBA(x, y, color.RGBA{200, 100, 50, 255})
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}
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}
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}
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p := filepath.Join(t.TempDir(), "big.png")
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f, err := os.Create(p)
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if err != nil {
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t.Fatal(err)
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}
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defer f.Close()
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if err := png.Encode(f, img); err != nil {
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t.Fatal(err)
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}
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return p
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}
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// TestShrinkForVision:大 PNG 降采样转 JPEG;小图原样返回。
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func TestShrinkForVision(t *testing.T) {
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big := makePNG(t, 2400, 1600, true)
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st, _ := os.Stat(big)
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if st.Size() <= shrinkThresholdBytes {
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t.Skipf("test png too small (%d bytes), raise noise complexity", st.Size())
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}
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out, err := ShrinkForVision(big)
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if err != nil {
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t.Fatal(err)
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}
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if out == big {
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t.Fatal("big png should be shrunk")
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}
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if filepath.Ext(out) != ".jpg" {
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t.Fatalf("expect jpg output, got %s", out)
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}
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ost, err := os.Stat(out)
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if err != nil {
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t.Fatal(err)
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}
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if ost.Size() >= st.Size() {
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t.Fatalf("shrunk %d should be smaller than original %d", ost.Size(), st.Size())
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}
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// 宽度不超过上限
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f, _ := os.Open(out)
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defer f.Close()
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img, _, err := image.Decode(f)
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if err != nil {
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t.Fatal(err)
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}
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if w := img.Bounds().Dx(); w > maxVisionWidth {
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t.Fatalf("width %d exceeds %d", w, maxVisionWidth)
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}
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os.Remove(out)
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// 小图:原样返回
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small := makePNG(t, 64, 64, false)
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out2, err := ShrinkForVision(small)
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if err != nil || out2 != small {
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t.Fatalf("small image passthrough: %q %v", out2, err)
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}
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// 非图片文件:原样返回
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txt := filepath.Join(t.TempDir(), "x.png")
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os.WriteFile(txt, []byte("not an image"), 0o644)
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out3, err := ShrinkForVision(txt)
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if err != nil || out3 != txt {
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t.Fatalf("non-image passthrough: %q %v", out3, err)
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}
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}
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// TestVisionJPEGDecodable:压缩产物可被 image/jpeg 解码且尺寸正确。
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func TestVisionJPEGDecodable(t *testing.T) {
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big := makePNG(t, 2000, 1000, true)
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out, err := ShrinkForVision(big)
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if err != nil || out == big {
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t.Fatalf("expected shrink: %q %v", out, err)
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}
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data, err := os.ReadFile(out)
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.HasPrefix(data, []byte{0xFF, 0xD8}) {
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t.Fatal("output is not JPEG (missing SOI marker)")
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}
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}
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