Qt: fix mic_none and move microphone creator code

rpcs3/rpcs3qt/microphone_creator.cpp

@@ -0,0 +1,76 @@
+#include "microphone_creator.h"
+
+#include "Utilities/StrUtil.h"
+
+#include "3rdparty/OpenAL/include/alext.h"
+
+constexpr auto qstr = QString::fromStdString;
+
+microphone_creator::microphone_creator()
+{
+	setObjectName("microphone_creator");
+	refresh_list();
+}
+
+// We need to recreate the localized string because the microphone creator is currently only created once.
+QString microphone_creator::get_none()
+{
+	return tr("None", "Microphone device");
+}
+
+void microphone_creator::refresh_list()
+{
+	m_microphone_list.clear();
+	m_microphone_list.append(get_none());
+
+	if (alcIsExtensionPresent(NULL, "ALC_ENUMERATION_EXT") == AL_TRUE)
+	{
+		const char* devices = alcGetString(NULL, ALC_CAPTURE_DEVICE_SPECIFIER);
+
+		while (*devices != 0)
+		{
+			m_microphone_list.append(qstr(devices));
+			devices += strlen(devices) + 1;
+		}
+	}
+	else
+	{
+		// Without enumeration we can only use one device
+		m_microphone_list.append(qstr(alcGetString(NULL, ALC_DEFAULT_DEVICE_SPECIFIER)));
+	}
+}
+
+QStringList microphone_creator::get_microphone_list()
+{
+	return m_microphone_list;
+}
+
+std::array<std::string, 4> microphone_creator::get_selection_list()
+{
+	return m_sel_list;
+}
+
+std::string microphone_creator::set_device(u32 num, const QString& text)
+{
+	if (text == get_none())
+		m_sel_list[num - 1] = "";
+	else
+		m_sel_list[num - 1] = text.toStdString();
+
+	const std::string final_list = m_sel_list[0] + "@@@" + m_sel_list[1] + "@@@" + m_sel_list[2] + "@@@" + m_sel_list[3] + "@@@";
+	return final_list;
+}
+
+void microphone_creator::parse_devices(const std::string& list)
+{
+	for (u32 index = 0; index < 4; index++)
+	{
+		m_sel_list[index] = "";
+	}
+
+	const auto devices_list = fmt::split(list, { "@@@" });
+	for (u32 index = 0; index < std::min<u32>(4, ::size32(devices_list)); index++)
+	{
+		m_sel_list[index] = devices_list[index];
+	}
+}