[PATCH 1/1] mf: Implement MFCreateSequencerSegmentOffset().

[Nikolay Sivov]

From: Nikolay Sivov

Signed-off-by: Nikolay Sivov 
---
 dlls/mf/mf.spec    |  2 +-
 dlls/mf/tests/mf.c | 17 +++++++++++
 dlls/mf/topology.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++
 include/mfidl.idl  |  1 +
 4 files changed, 95 insertions(+), 1 deletion(-)

diff --git a/dlls/mf/mf.spec b/dlls/mf/mf.spec
index e207ca23a8e..9477cdda61e 100644
--- a/dlls/mf/mf.spec
+++ b/dlls/mf/mf.spec
@@ -56,7 +56,7 @@
 @ stdcall MFCreateSampleCopierMFT(ptr)
 @ stdcall MFCreateSampleGrabberSinkActivate(ptr ptr ptr)
 @ stub MFCreateSecureHttpSchemePlugin
-@ stub MFCreateSequencerSegmentOffset
+@ stdcall MFCreateSequencerSegmentOffset(long int64 ptr)
 @ stdcall MFCreateSequencerSource(ptr ptr)
 @ stub MFCreateSequencerSourceRemoteStream
 @ stdcall MFCreateSimpleTypeHandler(ptr)
diff --git a/dlls/mf/tests/mf.c b/dlls/mf/tests/mf.c
index 743946f7fba..4f4a282a9d8 100644
--- a/dlls/mf/tests/mf.c
+++ b/dlls/mf/tests/mf.c
@@ -7051,6 +7051,22 @@ static void test_mpeg4_media_sink(void)
     IMFMediaType_Release(audio_type);
 }

+static void test_MFCreateSequencerSegmentOffset(void)
+{
+    PROPVARIANT propvar;
+    HRESULT hr;
+
+    hr = MFCreateSequencerSegmentOffset(0, 0, NULL);
+    ok(hr == E_POINTER, "Unexpected hr %#lx.\n", hr);
+
+    propvar.vt = VT_EMPTY;
+    hr = MFCreateSequencerSegmentOffset(0, 0, &propvar);
+    ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
+    ok(propvar.vt == VT_UNKNOWN, "Unexpected type %d.\n", propvar.vt);
+    ok(!!propvar.punkVal, "Unexpected pointer.\n");
+    PropVariantClear(&propvar);
+}
+
 START_TEST(mf)
 {
     init_functions();
@@ -7085,4 +7101,5 @@ START_TEST(mf)
     test_MFGetTopoNodeCurrentType();
     test_MFRequireProtectedEnvironment();
     test_mpeg4_media_sink();
+    test_MFCreateSequencerSegmentOffset();
 }
diff --git a/dlls/mf/topology.c b/dlls/mf/topology.c
index b684b17ff72..f09a9c87a46 100644
--- a/dlls/mf/topology.c
+++ b/dlls/mf/topology.c
@@ -2230,3 +2230,79 @@ HRESULT WINAPI MFCreateSequencerSource(IUnknown *reserved, IMFSequencerSource **

return S_OK;
 }
+
+struct segment_offset
+{
+    IUnknown IUnknown_iface;
+    LONG refcount;
+    MFSequencerElementId id;
+    MFTIME timeoffset;
+};
+
+static inline struct segment_offset *impl_offset_from_IUnknown(IUnknown *iface)
+{
+    return CONTAINING_RECORD(iface, struct segment_offset, IUnknown_iface);
+}
+
+static HRESULT WINAPI segment_offset_QueryInterface(IUnknown *iface, REFIID riid, void **obj)
+{
+    if (IsEqualIID(riid, &IID_IUnknown))
+    {
+        *obj = iface;
+        IUnknown_AddRef(iface);
+        return S_OK;
+    }
+
+    *obj = NULL;
+    return E_NOINTERFACE;
+}
+
+static ULONG WINAPI segment_offset_AddRef(IUnknown *iface)
+{
+    struct segment_offset *offset = impl_offset_from_IUnknown(iface);
+    return InterlockedIncrement(&offset->refcount);
+}
+
+static ULONG WINAPI segment_offset_Release(IUnknown *iface)
+{
+    struct segment_offset *offset = impl_offset_from_IUnknown(iface);
+    ULONG refcount = InterlockedDecrement(&offset->refcount);
+
+    if (!refcount)
+        free(offset);
+
+    return refcount;
+}
+
+static const IUnknownVtbl segment_offset_vtbl =
+{
+    segment_offset_QueryInterface,
+    segment_offset_AddRef,
+    segment_offset_Release,
+};
+
+/***********************************************************************
+ *      MFCreateSequencerSegmentOffset (mf.@)
+ */
+HRESULT WINAPI MFCreateSequencerSegmentOffset(MFSequencerElementId id, MFTIME timeoffset, PROPVARIANT *ret)
+{
+    struct segment_offset *offset;
+
+    TRACE("%#lx, %s, %p.\n", id, debugstr_time(timeoffset), ret);
+
+    if (!ret)
+        return E_POINTER;
+
+    if (!(offset = calloc(1, sizeof(*offset))))
+        return E_OUTOFMEMORY;
+
+    offset->IUnknown_iface.lpVtbl = &segment_offset_vtbl;
+    offset->refcount = 1;
+    offset->id = id;
+    offset->timeoffset = timeoffset;
+
+    V_VT(ret) = VT_UNKNOWN;
+    V_UNKNOWN(ret) = &offset->IUnknown_iface;
+
+    return S_OK;
+}
diff --git a/include/mfidl.idl b/include/mfidl.idl
index 94bf1a2036c..b3201b12d84 100644
--- a/include/mfidl.idl
+++ b/include/mfidl.idl
@@ -709,6 +709,7 @@ cpp_quote("HRESULT WINAPI MFCreateSimpleTypeHandler(IMFMediaTypeHandler **handle
 cpp_quote("HRESULT WINAPI MFCreateSampleCopierMFT(IMFTransform **transform);")
 cpp_quote("HRESULT WINAPI MFCreateSampleGrabberSinkActivate(IMFMediaType *media_type,")
 cpp_quote("        IMFSampleGrabberSinkCallback *callback, IMFActivate **activate);")
+cpp_quote("HRESULT WINAPI MFCreateSequencerSegmentOffset(MFSequencerElementId id, MFTIME offset, PROPVARIANT *segment_offset);")
 cpp_quote("HRESULT WINAPI MFCreateSequencerSource(IUnknown *reserved, IMFSequencerSource **seq_source);" )
 cpp_quote("HRESULT WINAPI MFCreateSourceResolver(IMFSourceResolver **resolver);")
 cpp_quote("HRESULT WINAPI MFCreateStandardQualityManager(IMFQualityManager **manager);")