obs源码简析之推流

写在最前面

obs录制推流，为obs核心给功能。

具体分析

obs点击开始录制，将会调用ui部分读取设置的参数：

UI/window-basic-main-outputs.cpp

bool AdvancedOutput::StartRecording()
{
	const char *path;
	const char *recFormat;
	const char *filenameFormat;
	bool noSpace = false;
	bool overwriteIfExists = false;

	if (!useStreamEncoder) {
		if (!ffmpegOutput) {
			UpdateRecordingSettings();
		}
	} else if (!obs_output_active(streamOutput)) {
		UpdateStreamSettings();
	}

	UpdateAudioSettings();

	if (!Active())
		SetupOutputs();

	if (!ffmpegOutput || ffmpegRecording) {
		path = config_get_string(main->Config(), "AdvOut",
				ffmpegRecording ? "FFFilePath" : "RecFilePath");
		recFormat = config_get_string(main->Config(), "AdvOut",
				ffmpegRecording ? "FFExtension" : "RecFormat");
		filenameFormat = config_get_string(main->Config(),