增加了排除自身的功能

README.md

@@ -68,7 +68,7 @@
 
 本程序通过以下三个命令行参数进行控制：
 
-*   `--pid <PID>`: 指定目标进程的 ID。此参数在模式 `1` 和 `2` 中为必需参数。
+*   `--pid <PID>`: 指定目标进程的 ID。此参数在模式 `1` 中为必需参数。模式 `2` 如果没提供 PID，将会排除自身 （把自己的 PID 输入进去）。
 *   `--mode <MODE>`: 设置录制模式。此参数必需。
     *   `0`: 全局环回模式
     *   `1`: 进程包含模式
@@ -101,6 +101,18 @@
     ProcessAudioRecorder.exe --pid 9999 --mode 2 --path D:\meeting_audio.wav
     ```
 
+**模式3增强模式：进程排除模式 （排除自身）**
+
+*   **场景**：您需要录制所有系统声音 （模式1），但录出来的音质很差，这时候就可尝试这种模式。
+*   **命令**：
+    ```shell
+    ProcessAudioRecorder.exe --mode 2 --path d:\Recording.wav    
+    ```
+也可以用简单写法：
+    ```shell
+    ProcessAudioRecorder.exe d:\Recording.wav
+    ```
+
 ##### **2.2.4 停止录制**
 
 当命令执行成功后，程序将开始录音，您将在控制台窗口看到类似于如下实时状态信息：

source/ProcessAudioRecorder.cpp

@@ -37,6 +37,7 @@ struct CommandLineArgs {
 	int captureMode = 1;
 	std::wstring outputPath;
 	bool isValid = false;
+	bool pidProvided = false;
 	std::wstring errorMessage;
 };
 
@@ -46,6 +47,34 @@ CommandLineArgs ParseCommandLine(int argc, wchar_t* argv[]) {
 		args.errorMessage = L"Error: Too few arguments.";
 		return args;
 	}
+
+	bool hasOptionArgs = false;
+	for (int i = 1; i < argc; i++) {
+		std::wstring arg = argv[i];
+		if (arg.rfind(L"--", 0) == 0) {
+			hasOptionArgs = true;
+			break;
+		}
+	}
+
+	if (!hasOptionArgs) {
+		if (argc != 2) {
+			args.errorMessage = L"Error: Invalid positional arguments. Expected: <PATH>.";
+			return args;
+		}
+
+		args.outputPath = argv[1];
+		if (args.outputPath.empty()) {
+			args.errorMessage = L"Error: Output path cannot be empty.";
+			return args;
+		}
+
+		args.captureMode = 2;
+		args.processId = GetCurrentProcessId();
+		args.pidProvided = false;
+		args.isValid = true;
+		return args;
+	}
 	std::map<std::wstring, std::wstring> params;
 	for (int i = 1; i < argc; i++) {
 		std::wstring arg = argv[i];
@@ -89,14 +118,21 @@ CommandLineArgs ParseCommandLine(int argc, wchar_t* argv[]) {
 
 	if (args.captureMode == 1 || args.captureMode == 2) {
 		if (params.find(L"pid") == params.end()) {
-			args.errorMessage = L"Error: Missing required argument --pid for mode 1 or 2.";
-			return args;
+			if (args.captureMode == 1) {
+				args.errorMessage = L"Error: Missing required argument --pid for mode 1.";
+				return args;
+			}
+			args.processId = GetCurrentProcessId();
+			args.pidProvided = false;
 		}
-		args.processId = std::wcstoul(params[L"pid"].c_str(), &endPtr, 10);
-		if (endPtr == params[L"pid"].c_str() || *endPtr != L'\0' || args.processId == 0) {
-			args.errorMessage = L"Error: Invalid process ID: " + params[L"pid"] +
-				L"\nMust be a positive integer.";
-			return args;
+		else {
+			args.processId = std::wcstoul(params[L"pid"].c_str(), &endPtr, 10);
+			if (endPtr == params[L"pid"].c_str() || *endPtr != L'\0' || args.processId == 0) {
+				args.errorMessage = L"Error: Invalid process ID: " + params[L"pid"] +
+					L"\nMust be a positive integer.";
+				return args;
+			}
+			args.pidProvided = true;
 		}
 	}
 
@@ -106,7 +142,8 @@ CommandLineArgs ParseCommandLine(int argc, wchar_t* argv[]) {
 
 void usage() {
 	std::wcout << L"Process Audio Recorder - Captures audio from processes or the entire system\n\n"
-		<< L"Usage: ProcessAudioRecorder [--pid <PID>] --mode <MODE> --path <FILEPATH>\n\n"
+		<< L"Usage: ProcessAudioRecorder [--pid <PID>] --mode <MODE> --path <FILEPATH>\n"
+		<< L"       ProcessAudioRecorder <FILEPATH>\n\n"
 		<< L"Options:\n"
 		<< L"  --pid <PID>    Target process ID (required for mode 1 and 2)\n"
 		<< L"  --mode <MODE>  Capture mode (required):\n"
@@ -117,7 +154,10 @@ void usage() {
 		<< L"Examples:\n"
 		<< L"  ProcessAudioRecorder --mode 0 --path C:\\system_audio.wav\n"
 		<< L"  ProcessAudioRecorder --pid 1234 --mode 1 --path C:\\record.wav\n"
-		<< L"  ProcessAudioRecorder --pid 5678 --path D:\\audio.wav\n\n"
+		<< L"  ProcessAudioRecorder --pid 5678 --path D:\\audio.wav\n"
+		<< L"  ProcessAudioRecorder --mode 2 --path D:\\audio.wav\n"
+		<< L"  ProcessAudioRecorder --mode 2 --pid 12345 --path D:\\audio.wav\n"
+		<< L"  ProcessAudioRecorder D:\\audio.wav\n\n"
 		<< L"Exit conditions:\n"
 		<< L"  - Target process exits (for mode 1 and 2)\n"
 		<< L"  - User presses Ctrl+C\n";
@@ -174,6 +214,10 @@ int wmain(int argc, wchar_t* argv[]) {
 		hr = loopbackCapture.StartGlobalCaptureAsync(args.outputPath.c_str());
 	}
 	else {
+		if (args.captureMode == 2 && !args.pidProvided) {
+			std::wcout << L"No --pid provided for mode 2. Defaulting to exclude self (PID "
+				<< args.processId << L")." << std::endl;
+		}
 		if (!IsProcessRunning(args.processId)) {
 			std::wcout << L"Error: Process with ID " << args.processId << L" does not exist or cannot be accessed." << std::endl;
 			return 3;