[PATCH v2 4/4] winedmo: Load winedmo for specific FFmpeg versions dynamically.

[Rémi Bernon]

From: Rémi Bernon <[e-mail]>

---
 dlls/winedmo/main.c | 49 ++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)

diff --git a/dlls/winedmo/main.c b/dlls/winedmo/main.c
index 27263b64826..8c7e84e7e44 100644
--- a/dlls/winedmo/main.c
+++ b/dlls/winedmo/main.c
@@ -335,6 +335,53 @@ static const struct winedmo_demuxer_funcs winedmo_demuxer_funcs =
     winedmo_demuxer_stream_type,
 };
 
+#ifndef WINEDMO_VERSION
+
+static const WCHAR *dynamic_modules[] =
+{
+    L"winedmo8",
+    L"winedmo7",
+    L"winedmo6",
+    L"winedmo5",
+    L"winedmo4",
+};
+
+static const struct winedmo_demuxer_funcs *load_demuxer_funcs( const WCHAR *module_name, const char *mime_type, UINT version )
+{
+    const struct winedmo_demuxer_funcs *(*CDECL get_funcs)( const char *, UINT );
+    HMODULE module;
+
+    if (!(module = LoadLibraryW( module_name ))) return NULL;
+    if (!(get_funcs = (void *)GetProcAddress( module, "winedmo_get_demuxer_funcs" )))
+    {
+        FreeLibrary( module );
+        return NULL;
+    }
+
+    TRACE( "loading demuxer from %s\n", debugstr_w(module_name) );
+    return get_funcs( mime_type, version );
+}
+
+static const struct winedmo_demuxer_funcs *get_dynamic_demuxer_funcs( const char *mime_type, UINT version )
+{
+    const struct winedmo_demuxer_funcs *funcs;
+
+    for (UINT i = 0; i < ARRAY_SIZE(dynamic_modules); i++)
+        if ((funcs = load_demuxer_funcs( dynamic_modules[i], mime_type, version )))
+            return funcs;
+
+    return NULL;
+}
+
+#else
+
+static const struct winedmo_demuxer_funcs *get_dynamic_demuxer_funcs( const char *mime_type, UINT version )
+{
+    return NULL;
+}
+
+#endif
+
 const struct winedmo_demuxer_funcs *CDECL winedmo_get_demuxer_funcs( const char *mime_type, UINT version )
 {
     struct demuxer_check_params params = {0};
@@ -352,7 +399,7 @@ const struct winedmo_demuxer_funcs *CDECL winedmo_get_demuxer_funcs( const char
     if ((status = UNIX_CALL( demuxer_check, ¶ms )))
     {
         WARN( "unsupported mime type %s demuxer, status %#lx\n", debugstr_a(mime_type), status );
-        return NULL;
+        return get_dynamic_demuxer_funcs( mime_type, version );
     }
 
     return &winedmo_demuxer_funcs;
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/9913