feat: 截图线程 + 编码线程。

每个显示器分别使用一个截图线程和一个编码（png+base64）线程。避免程序不明原因崩溃。

src-tauri/Cargo.lock

@@ -546,6 +546,19 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "env_logger"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85cdab6a89accf66733ad5a1693a4dcced6aeff64602b634530dd73c1f3ee9f0"
+dependencies = [
+ "humantime",
+ "is-terminal",
+ "log",
+ "regex",
+ "termcolor",
+]
+
 [[package]]
 name = "errno"
 version = "0.2.8"
@@ -1027,6 +1040,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
+
 [[package]]
 name = "html5ever"
 version = "0.25.2"
@@ -1058,6 +1077,12 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "21dec9db110f5f872ed9699c3ecf50cf16f423502706ba5c72462e28d3157573"
 
+[[package]]
+name = "humantime"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
 [[package]]
 name = "ico"
 version = "0.2.0"
@@ -1153,6 +1178,18 @@ dependencies = [
  "windows-sys 0.45.0",
 ]
 
+[[package]]
+name = "is-terminal"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21b6b32576413a8e69b90e952e4a026476040d81017b80445deda5f2d3921857"
+dependencies = [
+ "hermit-abi 0.3.1",
+ "io-lifetimes",
+ "rustix",
+ "windows-sys 0.45.0",
+]
+
 [[package]]
 name = "itoa"
 version = "0.4.8"
@@ -1378,6 +1415,18 @@ dependencies = [
  "adler",
 ]
 
+[[package]]
+name = "mio"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
+dependencies = [
+ "libc",
+ "log",
+ "wasi 0.11.0+wasi-snapshot-preview1",
+ "windows-sys 0.45.0",
+]
+
 [[package]]
 name = "ndk"
 version = "0.6.0"
@@ -1464,7 +1513,7 @@ version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
 dependencies = [
- "hermit-abi",
+ "hermit-abi 0.2.6",
  "libc",
 ]
 
@@ -1563,6 +1612,12 @@ dependencies = [
  "system-deps 6.0.3",
 ]
 
+[[package]]
+name = "paris"
+version = "1.5.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2eaf2319cd71dd9ff38c72bebde61b9ea657134abcf26ae4205f54f772a32810"
+
 [[package]]
 name = "parking_lot"
 version = "0.12.1"
@@ -2174,6 +2229,15 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8229b473baa5980ac72ef434c4415e70c4b5e71b423043adb4ba059f89c99a1"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "siphasher"
 version = "0.3.10"
@@ -2195,6 +2259,16 @@ version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
 
+[[package]]
+name = "socket2"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "soup2"
 version = "0.2.1"
@@ -2559,6 +2633,15 @@ dependencies = [
  "utf-8",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be55cf8942feac5c765c2c993422806843c9a9a45d4d5c407ad6dd2ea95eb9b6"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "test-demo"
 version = "0.0.0"
@@ -2567,12 +2650,15 @@ dependencies = [
  "base64 0.21.0",
  "core-graphics",
  "display-info",
+ "env_logger",
+ "log",
+ "paris",
  "png",
  "serde",
  "serde_json",
  "tauri",
  "tauri-build",
- "tracing",
+ "tokio",
  "webp",
 ]
 
@@ -2662,12 +2748,29 @@ checksum = "03201d01c3c27a29c8a5cee5b55a93ddae1ccf6f08f65365c2c918f8c1b76f64"
 dependencies = [
  "autocfg",
  "bytes",
+ "libc",
  "memchr",
+ "mio",
  "num_cpus",
+ "parking_lot",
  "pin-project-lite",
+ "signal-hook-registry",
+ "socket2",
+ "tokio-macros",
  "windows-sys 0.45.0",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d266c00fde287f55d3f1c3e96c500c362a2b8c695076ec180f27918820bc6df8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "toml"
 version = "0.5.11"