Merge pull request #5 from WinampDesktop/community

Merge to main

1 files changed, 171 insertions, 0 deletions

diff --git a/Src/Winamp/ipc_pe.h b/Src/Winamp/ipc_pe.h
new file mode 100644
index 00000000..3f0076aa
--- /dev/null
+++ b/Src/Winamp/ipc_pe.h
@@ -0,0 +1,171 @@
+#ifndef __IPC_PE_H
+#define __IPC_PE_H
+
+/*
+** To use these messages you will need a valid window handle for the playlist window
+** and the format to use them is:
+**
+** SendMessageW(playlist_wnd,WM_WA_IPC,IPC_*,(parameter));
+**
+** Note:
+**      This IS the OPPOSITE way to how the messages to the main winamp window are sent
+**      SendMessageW(hwnd_winamp,WM_WA_IPC,(parameter),IPC_*);
+*/
+
+/*
+** Playlist Window:
+**
+** To get the playlist window there are two ways depending on the version you're using
+**
+** HWND playlist_wnd = 0;
+** int wa_version = SendMessageW(plugin.hwndParent,WM_WA_IPC,0,IPC_GETVERSION);
+**
+** if(wa_version >= 0x2900)
+** {
+**   // use the built in api to get the handle
+**   playlist_wnd = (HWND)SendMessageW(plugin.hwndParent,WM_WA_IPC,IPC_GETWND_PE,IPC_GETWND);
+** }
+**
+** // if it failed then use the old way :o)
+** if(!IsWindow(playlist_wnd))
+** {
+**   playlist_wnd = FindWindow("Winamp PE",0);
+** }
+*/
+
+
+/*
+** Structures used by some of the apis referenced.
+*/
+typedef struct {
+	char file[MAX_PATH];
+	int index;
+} fileinfo;
+
+typedef struct {
+	wchar_t file[MAX_PATH];
+	int index;
+} fileinfoW;
+
+typedef struct {
+	HWND callback;
+	int index;
+} callbackinfo;
+
+typedef struct {
+	int fileindex;
+	char filetitle[256];
+	char filelength[16];
+} fileinfo2;
+
+typedef struct {
+	int fileindex;
+	wchar_t filetitle[256];
+	wchar_t filelength[16];
+} fileinfo2W;
+
+
+#define IPC_PE_GETCURINDEX           100 // returns current idx (typically the playing item)
+#define IPC_PE_GETINDEXTOTAL         101 // returns the number of items in the playlist
+
+#define IPC_PE_GETINDEXINFO          102 // (copydata) lpData is of type callbackinfo, callback is called with copydata/fileinfo structure and msg IPC_PE_GETINDEXINFORESULT
+#define IPC_PE_GETINDEXINFORESULT    103 // callback message for IPC_PE_GETINDEXINFO
+
+#define IPC_PE_DELETEINDEX           104 // lParam = index
+
+#define IPC_PE_SWAPINDEX             105 // (lParam & 0xFFFF0000) >> 16 = from, (lParam & 0xFFFF) = to
+/*
+** SendMessageW(playlist_wnd,WM_WA_IPC,IPC_PE_SWAPINDEX,MAKELPARAM(from,to));
+*/
+
+#define IPC_PE_INSERTFILENAME        106 // (copydata) lpData is of type fileinfo
+#define IPC_PE_INSERTFILENAMEW       114 // (copydata) lpData is of type fileinfoW (5.3+)
+/* COPYDATASTRUCT cds = {0};
+** fileinfo f = {0};
+**
+**   lstrcpyn(f.file, file,MAX_PATH);	// path to the file
+**   f.index = position;			// insert file position
+**
+**   cds.dwData = IPC_PE_INSERTFILENAME;
+**   cds.lpData = (void*)&f;
+**   cds.cbData = sizeof(fileinfo);
+**   SendMessageW(playlist_wnd,WM_COPYDATA,0,(LPARAM)&cds);
+*/
+
+
+#define IPC_PE_GETDIRTY              107 // returns 1 if the playlist changed since the last IPC_PE_SETCLEAN
+#define IPC_PE_SETCLEAN	             108 // resets the dirty flag until next modification
+
+#define IPC_PE_GETIDXFROMPOINT       109 // pass a point param and will return a playlist index (if in the area)
+/*
+** POINT pt;
+** RECT rc;
+**
+**   // Get the current position of the mouse and the current client area of the playlist window
+**   // and then mapping the mouse position to the client area
+**   GetCursorPos(&pt);
+**
+**   // Get the client area of the playlist window and then map the mouse position to it
+**   GetClientRect(playlist_wnd,&rc);
+**   ScreenToClient(playlist_wnd,&pt);
+**
+**   // this corrects so the selection works correctly on the selection boundary
+**   // appears to happen on the older 2.x series as well
+**   pt.y -= 2;
+**
+**   // corrections for the playlist window area so that work is only done for valid positions
+**   // and nicely enough it works for both classic and modern skin modes
+**   rc.top += 18;
+**   rc.left += 12;
+**   rc.right -= 19;
+**   rc.bottom -= 40;
+**
+**   // is the click in 
+**   if(PtInRect(&rc,pt))
+**   {
+**     // get the item index at the given point
+**     // if this is out of range then it will return 0 (not very helpful really)
+**     int idx = SendMessageW(playlist_wnd,WM_WA_IPC,IPC_PE_GETIDXFROMPOINT,(LPARAM)&pt);
+**
+**     // makes sure that the item isn't past the last playlist item
+**     if(idx < SendMessageW(playlist_wnd,WM_WA_IPC,IPC_PE_GETINDEXTOTAL,0))
+**     {
+**       // ... do stuff in here (this example will start playing the selected track)
+**       SendMessageW(plugin.hwndParent,WM_WA_IPC,idx,IPC_SETPLAYLISTPOS);
+**       SendMessageW(plugin.hwndParent,WM_COMMAND,MAKEWPARAM(WINAMP_BUTTON2,0),0);
+**     }
+**   }
+*/
+
+#define IPC_PE_SAVEEND               110 // pass index to save from
+#define IPC_PE_RESTOREEND            111 // no parm
+
+#define IPC_PE_GETNEXTSELECTED       112 // same as IPC_PLAYLIST_GET_NEXT_SELECTED for the main window
+#define IPC_PE_GETSELECTEDCOUNT      113
+
+#define IPC_PE_GETINDEXINFO_TITLE    115 // like IPC_PE_GETINDEXINFO, but writes the title to char file[MAX_PATH] instead of filename
+#define IPC_PE_GETINDEXINFORESULT_TITLE 116 // callback message for IPC_PE_GETINDEXINFO
+
+
+// the following messages are in_process ONLY
+
+#define IPC_PE_GETINDEXTITLE         200 // lParam = pointer to fileinfo2 struct
+#define IPC_PE_GETINDEXTITLEW        201 // lParam = pointer to fileinfo2W struct
+/*
+** fileinfo2 file;
+** int ret = 0;
+**
+**   file.fileindex = position;	// this is zero based!
+**   ret = SendMessageW(playlist_wnd,WM_WA_IPC,IPC_PE_GETINDEXTITLE,(LPARAM)&file);
+**
+**   // if it returns 0 then track information was received
+**   if(!ret)
+**   {
+**     // ... do stuff
+**   }
+*/
+
+#define IPC_PE_GETINDEXINFO_INPROC   202 // lParam = pointer to fileinfo struct
+#define IPC_PE_GETINDEXINFOW_INPROC  203 // lParam = pointer to fileinfoW struct
+
+#endif
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