winegstreamer: Use the H264 decoder to implement the IV50 decoder.

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@@ -222,7 +222,6 @@ F:	dlls/winegstreamer/h264_decoder.c
 F:	dlls/winegstreamer/media_source.c
 F:	dlls/winegstreamer/mfplat.c
 F:	dlls/winegstreamer/resampler.c
-F:	dlls/winegstreamer/video_decoder.c
 F:	dlls/winegstreamer/video_processor.c
 F:	dlls/winegstreamer/wg_sample.c
 F:	dlls/winegstreamer/wg_transform.c

dlls/winegstreamer/Makefile.in

@@ -19,7 +19,6 @@ SOURCES = \
 	resampler.c \
 	rsrc.rc \
 	unixlib.c \
-	video_decoder.c \
 	video_processor.c \
 	wg_allocator.c \
 	wg_format.c \

dlls/winegstreamer/h264_decoder.c

-/* H264 Decoder Transform
+/* Generic Video Decoder Transform
  *
  * Copyright 2022 Rémi Bernon for CodeWeavers
+ * Copyright 2023 Shaun Ren for CodeWeavers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -109,7 +110,10 @@ static HRESULT try_create_wg_transform(struct h264_decoder *decoder)
         attrs.low_latency = !!low_latency;
 
     if (!(decoder->wg_transform = wg_transform_create(&input_format, &output_format, &attrs)))
+    {
+        ERR("Failed to create transform with input major_type %u.\n", input_format.major_type);
         return E_FAIL;
+    }
 
     return S_OK;
 }
@@ -898,3 +902,32 @@ HRESULT h264_decoder_create(REFIID riid, void **out)
     IMFTransform_Release(iface);
     return hr;
 }
+
+extern GUID MFVideoFormat_IV50;
+static const GUID *const iv50_decoder_input_types[] =
+{
+    &MFVideoFormat_IV50,
+};
+static const GUID *const iv50_decoder_output_types[] =
+{
+    &MFVideoFormat_YV12,
+    &MFVideoFormat_YUY2,
+    &MFVideoFormat_NV11,
+    &MFVideoFormat_NV12,
+    &MFVideoFormat_RGB32,
+    &MFVideoFormat_RGB24,
+    &MFVideoFormat_RGB565,
+    &MFVideoFormat_RGB555,
+    &MFVideoFormat_RGB8,
+};
+
+HRESULT WINAPI winegstreamer_create_video_decoder(IMFTransform **out)
+{
+    TRACE("out %p.\n", out);
+
+    if (!init_gstreamer())
+        return E_FAIL;
+
+    return video_decoder_create_with_types(iv50_decoder_input_types, ARRAY_SIZE(iv50_decoder_input_types),
+            iv50_decoder_output_types, ARRAY_SIZE(iv50_decoder_output_types), out);
+}