Initial community commit

Src/Winamp/JSAPI2_CallbackManager.h

@@ -0,0 +1,93 @@
+#pragma once
+#include "../nu/AutoLock.h"
+#include <vector>
+#include "../Components/wac_downloadManager/wac_downloadManager_api.h"
+
+extern "C" HANDLE DuplicateCurrentThread();
+namespace JSAPI2
+{
+	template <class API> struct CallbackInfo
+	{
+		CallbackInfo()
+		{
+			api = 0;
+			threadId = 0;
+			threadHandle = 0;
+		}
+
+		CallbackInfo(API *me)
+		{
+			api = me;
+			threadId = GetCurrentThreadId();
+			threadHandle = DuplicateCurrentThread();
+		}
+
+		~CallbackInfo()
+		{
+			CloseHandle(threadHandle);
+			threadHandle = 0;
+		}
+		API *api;
+		DWORD threadId;
+		HANDLE threadHandle;
+	};
+
+	class TransportAPI;
+	class MediaCoreAPI;
+	class AsyncDownloaderAPI;
+	class CallbackManager
+	{
+	public:
+		CallbackManager();
+		
+	public:
+		/** stuff for Winamp to call to trigger callbacks 
+		** these are primarily responsible for getting over to the correct thread
+		** to keep that particular logic out of the various functions
+		*/
+		void OnStop(int position, int is_full_stop);
+		void OnPlay(const wchar_t *filename);
+		void OnPause(bool pause_state);
+
+		/** Stuff that's OK to call on any thread 
+		*/
+		bool OverrideMetadata(const wchar_t *filename, const wchar_t *tag, wchar_t *out, size_t outCch);
+
+		/** stuff for Winamp to call to trigger callbacks 
+		** these are primarily responsible for getting over to the correct thread
+		** to keep that particular logic out of the various functions
+		*/
+		void OnInit(const wchar_t *url, const wchar_t *onlinesvcId);
+		void OnConnect(const wchar_t *url, const wchar_t *onlinesvcId);
+		void OnData(const wchar_t *url, size_t downloadedlen, size_t totallen, const wchar_t *onlinesvcId);
+		void OnCancel(const wchar_t *url, const wchar_t *onlinesvcId);
+		void OnError(const wchar_t *url, int error, const wchar_t *onlinesvcId);
+		void OnFinish(const wchar_t *url, const wchar_t *destfilename, const wchar_t *onlinesvcId);
+	public:
+		/* stuff for other JSAPI2 classes to call */
+		void Register(JSAPI2::TransportAPI *me);
+		void Deregister(JSAPI2::TransportAPI *me);
+
+		void Register(JSAPI2::MediaCoreAPI *me);
+		void Deregister(JSAPI2::MediaCoreAPI *me);
+
+		void Register(JSAPI2::AsyncDownloaderAPI *me);
+		void Deregister(JSAPI2::AsyncDownloaderAPI *me);
+	private:
+		/* Transport API callbacks */
+		typedef CallbackInfo<JSAPI2::TransportAPI> TransportCallback;
+		typedef std::vector<TransportCallback*> TransportsList;
+		TransportsList transports;
+
+		typedef std::vector<MediaCoreAPI*> MediaCoreList;
+		MediaCoreList mediaCores;
+
+		typedef CallbackInfo<JSAPI2::AsyncDownloaderAPI> AsyncDownloaderCallback;
+		typedef std::vector<AsyncDownloaderCallback*> AsyncDownloadersList;
+		AsyncDownloadersList asyncDownloaders;
+
+		Nullsoft::Utility::LockGuard callbackGuard;
+	};
+
+	extern CallbackManager callbackManager;
+}