winegstreamer: Add video_decoder stub.

MAINTAINERS

@@ -212,6 +212,7 @@ F:	dlls/winegstreamer/aac_decoder.c
 F:	dlls/winegstreamer/color_convert.c
 F:	dlls/winegstreamer/h264_decoder.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

@@ -16,6 +16,7 @@ C_SRCS = \
 	quartz_parser.c \
 	quartz_transform.c \
 	resampler.c \
+	video_decoder.c \
 	video_processor.c \
 	wg_allocator.c \
 	wg_format.c \

dlls/winegstreamer/video_decoder.c

+/* 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
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "gst_private.h"
+
+#include "mfapi.h"
+#include "mferror.h"
+#include "mfobjects.h"
+#include "mftransform.h"
+
+#include "wine/debug.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(mfplat);
+
+struct video_decoder
+{
+    IMFTransform IMFTransform_iface;
+    LONG refcount;
+};
+
+static struct video_decoder *impl_from_IMFTransform(IMFTransform *iface)
+{
+    return CONTAINING_RECORD(iface, struct video_decoder, IMFTransform_iface);
+}
+
+static HRESULT WINAPI transform_QueryInterface(IMFTransform *iface, REFIID iid, void **out)
+{
+    struct video_decoder *decoder = impl_from_IMFTransform(iface);
+
+    TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
+
+    if (IsEqualGUID(iid, &IID_IUnknown) ||
+            IsEqualGUID(iid, &IID_IMFTransform))
+        *out = &decoder->IMFTransform_iface;
+    else
+    {
+        *out = NULL;
+        WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
+        return E_NOINTERFACE;
+    }
+
+    IUnknown_AddRef((IUnknown *)*out);
+    return S_OK;
+}
+
+static ULONG WINAPI transform_AddRef(IMFTransform *iface)
+{
+    struct video_decoder *decoder = impl_from_IMFTransform(iface);
+    ULONG refcount = InterlockedIncrement(&decoder->refcount);
+
+    TRACE("iface %p increasing refcount to %lu.\n", decoder, refcount);
+
+    return refcount;
+}
+
+static ULONG WINAPI transform_Release(IMFTransform *iface)
+{
+    struct video_decoder *decoder = impl_from_IMFTransform(iface);
+    ULONG refcount = InterlockedDecrement(&decoder->refcount);
+
+    TRACE("iface %p decreasing refcount to %lu.\n", decoder, refcount);
+
+    if (!refcount)
+    {
+        free(decoder);
+    }
+
+    return refcount;
+}
+
+static HRESULT WINAPI transform_GetStreamLimits(IMFTransform *iface, DWORD *input_minimum,
+        DWORD *input_maximum, DWORD *output_minimum, DWORD *output_maximum)
+{
+    FIXME("iface %p, input_minimum %p, input_maximum %p, output_minimum %p, output_maximum %p.\n",
+            iface, input_minimum, input_maximum, output_minimum, output_maximum);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetStreamCount(IMFTransform *iface, DWORD *inputs, DWORD *outputs)
+{
+    TRACE("iface %p, inputs %p, outputs %p.\n", iface, inputs, outputs);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetStreamIDs(IMFTransform *iface, DWORD input_size, DWORD *inputs,
+        DWORD output_size, DWORD *outputs)
+{
+    FIXME("iface %p, input_size %lu, inputs %p, output_size %lu, outputs %p.\n", iface,
+          input_size, inputs, output_size, outputs);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetInputStreamInfo(IMFTransform *iface, DWORD id, MFT_INPUT_STREAM_INFO *info)
+{
+    FIXME("iface %p, id %#lx, info %p.\n", iface, id, info);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetOutputStreamInfo(IMFTransform *iface, DWORD id, MFT_OUTPUT_STREAM_INFO *info)
+{
+    FIXME("iface %p, id %#lx, info %p.\n", iface, id, info);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetAttributes(IMFTransform *iface, IMFAttributes **attributes)
+{
+    FIXME("iface %p, attributes %p semi-stub!\n", iface, attributes);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetInputStreamAttributes(IMFTransform *iface, DWORD id, IMFAttributes **attributes)
+{
+    FIXME("iface %p, id %#lx, attributes %p.\n", iface, id, attributes);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetOutputStreamAttributes(IMFTransform *iface, DWORD id, IMFAttributes **attributes)
+{
+    FIXME("iface %p, id %#lx, attributes %p stub!\n", iface, id, attributes);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_DeleteInputStream(IMFTransform *iface, DWORD id)
+{
+    FIXME("iface %p, id %#lx.\n", iface, id);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_AddInputStreams(IMFTransform *iface, DWORD streams, DWORD *ids)
+{
+    FIXME("iface %p, streams %lu, ids %p.\n", iface, streams, ids);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetInputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
+        IMFMediaType **type)
+{
+    FIXME("iface %p, id %#lx, index %#lx, type %p.\n", iface, id, index, type);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetOutputAvailableType(IMFTransform *iface, DWORD id,
+        DWORD index, IMFMediaType **type)
+{
+    FIXME("iface %p, id %#lx, index %#lx, type %p.\n", iface, id, index, type);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_SetInputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
+{
+    FIXME("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_SetOutputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
+{
+    FIXME("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetInputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
+{
+    FIXME("iface %p, id %#lx, type %p stub!\n", iface, id, type);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetOutputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
+{
+    FIXME("iface %p, id %#lx, type %p stub!\n", iface, id, type);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetInputStatus(IMFTransform *iface, DWORD id, DWORD *flags)
+{
+    FIXME("iface %p, id %#lx, flags %p stub!\n", iface, id, flags);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_GetOutputStatus(IMFTransform *iface, DWORD *flags)
+{
+    FIXME("iface %p, flags %p stub!\n", iface, flags);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_SetOutputBounds(IMFTransform *iface, LONGLONG lower, LONGLONG upper)
+{
+    TRACE("iface %p, lower %I64d, upper %I64d.\n", iface, lower, upper);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_ProcessEvent(IMFTransform *iface, DWORD id, IMFMediaEvent *event)
+{
+    FIXME("iface %p, id %#lx, event %p stub!\n", iface, id, event);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_ProcessMessage(IMFTransform *iface, MFT_MESSAGE_TYPE message, ULONG_PTR param)
+{
+    FIXME("iface %p, message %#x, param %Ix stub!\n", iface, message, param);
+    return S_OK;
+}
+
+static HRESULT WINAPI transform_ProcessInput(IMFTransform *iface, DWORD id, IMFSample *sample, DWORD flags)
+{
+    FIXME("iface %p, id %#lx, sample %p, flags %#lx.\n", iface, id, sample, flags);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI transform_ProcessOutput(IMFTransform *iface, DWORD flags, DWORD count,
+        MFT_OUTPUT_DATA_BUFFER *samples, DWORD *status)
+{
+    FIXME("iface %p, flags %#lx, count %lu, samples %p, status %p.\n", iface, flags, count, samples, status);
+    return E_NOTIMPL;
+}
+
+static const IMFTransformVtbl transform_vtbl =
+{
+    transform_QueryInterface,
+    transform_AddRef,
+    transform_Release,
+    transform_GetStreamLimits,
+    transform_GetStreamCount,
+    transform_GetStreamIDs,
+    transform_GetInputStreamInfo,
+    transform_GetOutputStreamInfo,
+    transform_GetAttributes,
+    transform_GetInputStreamAttributes,
+    transform_GetOutputStreamAttributes,
+    transform_DeleteInputStream,
+    transform_AddInputStreams,
+    transform_GetInputAvailableType,
+    transform_GetOutputAvailableType,
+    transform_SetInputType,
+    transform_SetOutputType,
+    transform_GetInputCurrentType,
+    transform_GetOutputCurrentType,
+    transform_GetInputStatus,
+    transform_GetOutputStatus,
+    transform_SetOutputBounds,
+    transform_ProcessEvent,
+    transform_ProcessMessage,
+    transform_ProcessInput,
+    transform_ProcessOutput,
+};
+
+HRESULT WINAPI winegstreamer_create_video_decoder(IMFTransform **out)
+{
+    struct video_decoder *decoder;
+
+    TRACE("out %p.\n", out);
+
+    if (!(decoder = calloc(1, sizeof(*decoder))))
+        return E_OUTOFMEMORY;
+
+    decoder->IMFTransform_iface.lpVtbl = &transform_vtbl;
+    decoder->refcount = 1;
+
+    *out = &decoder->IMFTransform_iface;
+    TRACE("created decoder %p.\n", *out);
+    return S_OK;
+}

dlls/winegstreamer/winegstreamer.spec

@@ -3,3 +3,4 @@
 @ stdcall -private DllRegisterServer()
 @ stdcall -private DllUnregisterServer()
 @ stdcall winegstreamer_create_wm_sync_reader(ptr ptr)
+@ stdcall winegstreamer_create_video_decoder(ptr)