(Windows) Add support for finding the bundled version of Jack which comes with Mixbus

[ardour.git] / libs / backends / jack / jack_utils.cc

diff --git a/libs/backends/jack/jack_utils.cc b/libs/backends/jack/jack_utils.cc
index 1e74a5315f1f32814dd24566f7a37b0eadab76b6..fcb0d7a169702858eaa3fe6e8911df4ab786d2fb 100644 (file)
--- a/libs/backends/jack/jack_utils.cc
+++ b/libs/backends/jack/jack_utils.cc
@@ -29,6 +29,11 @@
 #include <mach-o/dyld.h>
 #endif
 
+#ifdef PLATFORM_WINDOWS
+#include <shobjidl.h>  //  Needed for
+#include <shlguid.h>   // 'IShellLink'
+#endif
+
 #ifdef HAVE_PORTAUDIO
 #include <portaudio.h>
 #endif
@@ -584,6 +589,60 @@ ARDOUR::get_jack_server_dir_paths (vector<std::string>& server_dir_paths)
        Searchpath sp(string(g_getenv("PATH")));
 
 #ifdef PLATFORM_WINDOWS
+// N.B. The #define (immediately below) can be safely removed once we know that this code builds okay with mingw
+#ifdef COMPILER_MSVC
+       IShellLinkA  *pISL = NULL;    
+       IPersistFile *ppf  = NULL;
+
+       // Mixbus creates a Windows shortcut giving the location of its
+       // own (bundled) version of Jack. Let's see if that shortcut exists
+       if (SUCCEEDED (CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (void**)&pISL)))
+       {
+               if (SUCCEEDED (pISL->QueryInterface(IID_IPersistFile, (LPVOID*)&ppf)))
+               {
+                       char  target_path[MAX_PATH];
+                       char  shortcut_pathA[MAX_PATH];
+                       WCHAR shortcut_pathW[MAX_PATH];
+
+                       // Our Windows installer should have created a shortcut to the Jack
+                       // server so let's start by finding out what drive it got installed on
+                       if (char *env_path = getenv ("windir"))
+                       {
+                               strcpy (shortcut_pathA, env_path);
+                               shortcut_pathA[2] = '\0'; // Gives us just the drive letter and colon
+                       }
+                       else // Assume 'C:'
+                               strcpy (shortcut_pathA, "C:");
+
+                       strcat (shortcut_pathA, "\\Program Files (x86)\\Jack\\Start Jack.lnk");
+
+                       MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, shortcut_pathA, -1, shortcut_pathW, MAX_PATH);
+
+                       // If it did, load the shortcut into our persistent file
+                       if (SUCCEEDED (ppf->Load(shortcut_pathW, 0)))
+                       {
+                               // Read the target information from the shortcut object
+                               if (S_OK == (pISL->GetPath (target_path, MAX_PATH, NULL, SLGP_UNCPRIORITY)))
+                               {
+                                       char *p = strrchr (target_path, '\\');
+
+                                       if (p)
+                                       {
+                                               *p = NULL;
+                                               sp.push_back (target_path);
+                                       }
+                               }
+                       }
+               }
+       }
+
+       if (ppf)
+               ppf->Release();
+
+       if (pISL)
+               pISL->Release();
+#endif
+
        gchar *install_dir = g_win32_get_package_installation_directory_of_module (NULL);
        if (install_dir) {
                sp.push_back (install_dir);