[PATCH 1/3] dmusic: Defer releasing IDirectMusicDownload when can_free is FALSE.

[Anton Baskanov]

From: Anton Baskanov

---
 dlls/dmusic/port.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/dlls/dmusic/port.c b/dlls/dmusic/port.c
index 84a9e759ab2..e4cf711d037 100644
--- a/dlls/dmusic/port.c
+++ b/dlls/dmusic/port.c
@@ -28,6 +28,7 @@ struct download_entry
 {
     struct list entry;
     IDirectMusicDownload *download;
+    BOOL data_in_use;
     HANDLE handle;
     DWORD id;
 };
@@ -522,6 +523,7 @@ static HRESULT WINAPI synth_port_download_Download(IDirectMusicPortDownload *ifa
         IDirectMusicDownload_AddRef(download);
         entry->id = info->dwDLId;
         entry->handle = handle;
+        entry->data_in_use = !can_free;
         list_add_tail(&This->downloads, &entry->entry);
     }

@@ -529,6 +531,13 @@ static HRESULT WINAPI synth_port_download_Download(IDirectMusicPortDownload *ifa
     return hr;
 }

+static HRESULT CALLBACK unload_callback(HANDLE handle, HANDLE user_data)
+{
+    IDirectMusicDownload *download = (IDirectMusicDownload *)user_data;
+    IDirectMusicDownload_Release(download);
+    return S_OK;
+}
+
 static HRESULT WINAPI synth_port_download_Unload(IDirectMusicPortDownload *iface, IDirectMusicDownload *download)
 {
     struct synth_port *This = synth_from_IDirectMusicPortDownload(iface);
@@ -544,7 +553,8 @@ static HRESULT WINAPI synth_port_download_Unload(IDirectMusicPortDownload *iface
         if (entry->download == download)
         {
             list_remove(&entry->entry);
-            IDirectMusicDownload_Release(entry->download);
+            if (!entry->data_in_use)
+                IDirectMusicDownload_Release(entry->download);
             handle = entry->handle;
             free(entry);
             break;
@@ -552,7 +562,7 @@ static HRESULT WINAPI synth_port_download_Unload(IDirectMusicPortDownload *iface
     }

if (!handle) return S_OK;
-    return IDirectMusicSynth_Unload(This->synth, handle, NULL, NULL);
+    return IDirectMusicSynth_Unload(This->synth, handle, unload_callback, download);
 }

static const IDirectMusicPortDownloadVtbl synth_port_download_vtbl = {