winegstreamer: Release requested samples if they are too small.

dlls/winegstreamer/wg_allocator.c

@@ -150,6 +150,7 @@ static GstMemory *wg_allocator_alloc(GstAllocator *gst_allocator, gsize size,
         GstAllocationParams *params)
 {
     WgAllocator *allocator = (WgAllocator *)gst_allocator;
+    struct wg_sample *sample;
     WgMemory *memory;
 
     GST_LOG("allocator %p, size %#zx, params %p", allocator, size, params);
@@ -162,7 +163,12 @@ static GstMemory *wg_allocator_alloc(GstAllocator *gst_allocator, gsize size,
 
     pthread_mutex_lock(&allocator->mutex);
 
-    memory->sample = allocator->request_sample(size, allocator->request_sample_context);
+    sample = allocator->request_sample(size, allocator->request_sample_context);
+    if (sample->max_size < size)
+        InterlockedDecrement(&sample->refcount);
+    else
+        memory->sample = sample;
+
     list_add_tail(&allocator->memory_list, &memory->entry);
 
     pthread_mutex_unlock(&allocator->mutex);

dlls/winegstreamer/wg_transform.c

@@ -310,15 +310,10 @@ static bool transform_append_element(struct wg_transform *transform, GstElement
 static struct wg_sample *transform_request_sample(gsize size, void *context)
 {
     struct wg_transform *transform = context;
-    struct wg_sample *sample;
 
     GST_LOG("size %#zx, context %p", size, transform);
 
-    sample = InterlockedExchangePointer((void **)&transform->output_wg_sample, NULL);
-    if (!sample || sample->max_size < size)
-        return NULL;
-
-    return sample;
+    return InterlockedExchangePointer((void **)&transform->output_wg_sample, NULL);
 }
 
 NTSTATUS wg_transform_create(void *args)