quartz: Implement a dummy null renderer for directshow.

dlls/quartz/Makefile.in

@@ -24,6 +24,7 @@ C_SRCS = \
 	main.c \
 	memallocator.c \
 	mpegsplit.c \
+	nullrenderer.c \
 	parser.c \
 	pin.c \
 	regsvr.c \

dlls/quartz/main.c

@@ -69,6 +69,7 @@ static const struct object_creation_info object_creation[] =
     { &CLSID_AviSplitter, AVISplitter_create },
     { &CLSID_MPEG1Splitter, MPEGSplitter_create },
     { &CLSID_VideoRenderer, VideoRenderer_create },
+    { &CLSID_NullRenderer, NullRenderer_create },
     { &CLSID_VideoRendererDefault, VideoRendererDefault_create },
     { &CLSID_DSoundRender, DSoundRender_create },
     { &CLSID_AVIDec, AVIDec_create },

dlls/quartz/quartz_private.h

@@ -52,6 +52,7 @@ HRESULT MPEGSplitter_create(IUnknown * pUnkOuter, LPVOID * ppv);
 HRESULT AVIDec_create(IUnknown * pUnkOuter, LPVOID * ppv);
 HRESULT DSoundRender_create(IUnknown * pUnkOuter, LPVOID * ppv);
 HRESULT VideoRenderer_create(IUnknown * pUnkOuter, LPVOID * ppv);
+HRESULT NullRenderer_create(IUnknown * pUnkOuter, LPVOID * ppv);
 HRESULT VideoRendererDefault_create(IUnknown * pUnkOuter, LPVOID * ppv);
 HRESULT QUARTZ_CreateSystemClock(IUnknown * pUnkOuter, LPVOID * ppv);
 HRESULT ACMWrapper_create(IUnknown * pUnkOuter, LPVOID * ppv);

dlls/quartz/regsvr.c

@@ -855,6 +855,12 @@ static struct regsvr_coclass const coclass_list[] = {
 	"quartz.dll",
 	"Both"
     },
+    {   &CLSID_NullRenderer,
+        "Null Renderer",
+        NULL,
+        "quartz.dll",
+        "Both"
+    },
     {   &CLSID_VideoRenderer,
 	"Video Renderer",
 	NULL,
@@ -1069,6 +1075,18 @@ static struct regsvr_filter const filter_list[] = {
             { 0xFFFFFFFF },
         }
     },
+    {   &CLSID_NullRenderer,
+        &CLSID_LegacyAmFilterCategory,
+        {'N','u','l','l',' ','R','e','n','d','e','r','e','r',0},
+        0x200000,
+        {   {   REG_PINFLAG_B_RENDERER,
+                {   { &MEDIATYPE_NULL, &GUID_NULL },
+                    { NULL }
+                },
+            },
+            { 0xFFFFFFFF },
+        }
+    },
     {   &CLSID_VideoRenderer,
 	&CLSID_LegacyAmFilterCategory,
 	{'V','i','d','e','o',' ','R','e','n','d','e','r','e','r',0},

include/uuids.h

@@ -134,6 +134,7 @@ OUR_GUID_ENTRY(CLSID_WAVEParser,                     0xd51bd5a1, 0x7548, 0x11cf,
 OUR_GUID_ENTRY(CLSID_QTDec,                          0xfdfe9681, 0x74a3, 0x11d0, 0xaf, 0xa7, 0x00, 0xaa, 0x00, 0xb6, 0x7a, 0x42)
 OUR_GUID_ENTRY(CLSID_AVIDoc,                         0xd3588ab0, 0x0781, 0x11ce, 0xb0, 0x3a, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70)
 OUR_GUID_ENTRY(CLSID_AVIDocWriter,                   0xd3588ab1, 0x0781, 0x11ce, 0xb0, 0x3a, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70)
+OUR_GUID_ENTRY(CLSID_NullRenderer,                   0xc1f400a4, 0x3f08, 0x11d3, 0x9f, 0x0b, 0x00, 0x60, 0x08, 0x03, 0x9e, 0x37)
 OUR_GUID_ENTRY(CLSID_VideoRenderer,                  0x70e102b0, 0x5556, 0x11ce, 0x97, 0xc0, 0x00, 0xaa, 0x00, 0x55, 0x59, 0x5a)
 OUR_GUID_ENTRY(CLSID_VideoRendererDefault,           0x6bc1cffa, 0x8fc1, 0x4261, 0xac, 0x22, 0xcf, 0xb4, 0xcc, 0x38, 0xdb, 0x50)
 OUR_GUID_ENTRY(CLSID_Colour,                         0x1643e180, 0x90f5, 0x11ce, 0x97, 0xd5, 0x00, 0xaa, 0x00, 0x55, 0x59, 0x5a)