mfplat: Implement MFCreateMemoryBuffer.

dlls/mfplat/main.c

@@ -2347,3 +2347,179 @@ HRESULT WINAPI MFCreateStreamDescriptor(DWORD identifier, DWORD count,
     *descriptor = &object->IMFStreamDescriptor_iface;
     return S_OK;
 }
+
+
+typedef struct _mfbuffer
+{
+    IMFMediaBuffer IMFMediaBuffer_iface;
+    LONG ref;
+
+    BYTE *buffer;
+    DWORD max_length;
+    DWORD current;
+} mfbuffer;
+
+static inline mfbuffer *impl_from_IMFMediaBuffer(IMFMediaBuffer *iface)
+{
+    return CONTAINING_RECORD(iface, mfbuffer, IMFMediaBuffer_iface);
+}
+
+static HRESULT WINAPI mfbuffer_QueryInterface(IMFMediaBuffer *iface, REFIID riid, void **out)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+
+    TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), out);
+
+    if(IsEqualGUID(riid, &IID_IUnknown) ||
+       IsEqualGUID(riid, &IID_IMFMediaBuffer))
+    {
+        *out = &This->IMFMediaBuffer_iface;
+    }
+    else
+    {
+        FIXME("(%s, %p)\n", debugstr_guid(riid), out);
+        *out = NULL;
+        return E_NOINTERFACE;
+    }
+
+    IUnknown_AddRef((IUnknown*)*out);
+    return S_OK;
+}
+
+static ULONG WINAPI mfbuffer_AddRef(IMFMediaBuffer *iface)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+    ULONG ref = InterlockedIncrement(&This->ref);
+
+    TRACE("(%p) ref=%u\n", This, ref);
+
+    return ref;
+}
+
+static ULONG WINAPI mfbuffer_Release(IMFMediaBuffer *iface)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+    ULONG ref = InterlockedDecrement(&This->ref);
+
+    TRACE("(%p) ref=%u\n", This, ref);
+
+    if (!ref)
+    {
+        heap_free(This->buffer);
+        heap_free(This);
+    }
+
+    return ref;
+}
+
+static HRESULT WINAPI mfbuffer_Lock(IMFMediaBuffer *iface, BYTE **buffer, DWORD *max, DWORD *current)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+
+    TRACE("%p, %p %p, %p\n", This, buffer, max, current);
+
+    if(!buffer)
+        return E_INVALIDARG;
+
+    *buffer = This->buffer;
+    if(max)
+        *max = This->max_length;
+    if(current)
+        *current = This->current;
+
+    return S_OK;
+}
+
+static HRESULT WINAPI mfbuffer_Unlock(IMFMediaBuffer *iface)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+
+    TRACE("%p\n", This);
+
+    return S_OK;
+}
+
+static HRESULT WINAPI mfbuffer_GetCurrentLength(IMFMediaBuffer *iface, DWORD *current)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+
+    TRACE("%p\n", This);
+
+    if(!current)
+        return E_INVALIDARG;
+
+    *current = This->current;
+
+    return S_OK;
+}
+
+static HRESULT WINAPI mfbuffer_SetCurrentLength(IMFMediaBuffer *iface, DWORD current)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+
+    TRACE("%p, %u\n", This, current);
+
+    if(current > This->max_length)
+        return E_INVALIDARG;
+
+    This->current = current;
+
+    return S_OK;
+}
+
+static HRESULT WINAPI mfbuffer_GetMaxLength(IMFMediaBuffer *iface, DWORD *max)
+{
+    mfbuffer *This = impl_from_IMFMediaBuffer(iface);
+
+    TRACE("%p, %p\n", This, max);
+
+    if(!max)
+        return E_INVALIDARG;
+
+    *max = This->max_length;
+
+    return S_OK;
+}
+
+static const IMFMediaBufferVtbl mfbuffer_vtbl =
+{
+    mfbuffer_QueryInterface,
+    mfbuffer_AddRef,
+    mfbuffer_Release,
+    mfbuffer_Lock,
+    mfbuffer_Unlock,
+    mfbuffer_GetCurrentLength,
+    mfbuffer_SetCurrentLength,
+    mfbuffer_GetMaxLength
+};
+
+HRESULT WINAPI MFCreateMemoryBuffer(DWORD max_length, IMFMediaBuffer **buffer)
+{
+    mfbuffer *object;
+    BYTE *bytes;
+
+    TRACE("%u, %p\n", max_length, buffer);
+
+    if(!buffer)
+        return E_INVALIDARG;
+
+    object = heap_alloc( sizeof(*object) );
+    if(!object)
+        return E_OUTOFMEMORY;
+
+    bytes = heap_alloc( max_length );
+    if(!bytes)
+    {
+        heap_free(object);
+        return E_OUTOFMEMORY;
+    }
+
+    object->ref = 1;
+    object->max_length = max_length;
+    object->current = 0;
+    object->buffer = bytes;
+    object->IMFMediaBuffer_iface.lpVtbl = &mfbuffer_vtbl;
+    *buffer = &object->IMFMediaBuffer_iface;
+
+    return S_OK;
+}

dlls/mfplat/mfplat.spec

@@ -51,7 +51,7 @@
 @ stub MFCreateMediaEvent
 @ stdcall MFCreateMediaType(ptr)
 @ stub MFCreateMediaTypeFromRepresentation
-@ stub MFCreateMemoryBuffer
+@ stdcall MFCreateMemoryBuffer(long ptr)
 @ stub MFCreateMemoryStream
 @ stub MFCreatePathFromURL
 @ stub MFCreatePresentationDescriptor

dlls/mfplat/tests/mfplat.c

@@ -38,6 +38,8 @@
 
 static HRESULT (WINAPI *pMFCreateSourceResolver)(IMFSourceResolver **resolver);
 static HRESULT (WINAPI *pMFCreateMFByteStreamOnStream)(IStream *stream, IMFByteStream **bytestream);
+static HRESULT (WINAPI *pMFCreateMemoryBuffer)(DWORD max_length, IMFMediaBuffer **buffer);
+
 
 DEFINE_GUID(MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 0xa634a91c, 0x822b, 0x41b9, 0xa4, 0x94, 0x4d, 0xe4, 0x64, 0x36, 0x12, 0xb0);
 
@@ -196,6 +198,7 @@ static void init_functions(void)
 #define X(f) if (!(p##f = (void*)GetProcAddress(mod, #f))) return;
     X(MFCreateSourceResolver);
     X(MFCreateMFByteStreamOnStream);
+    X(MFCreateMemoryBuffer);
 #undef X
 }
 
@@ -274,6 +277,92 @@ static void test_MFCreateMFByteStreamOnStream(void)
     IMFByteStream_Release(bytestream);
 }
 
+static void test_MFCreateMemoryBuffer(void)
+{
+    IMFMediaBuffer *buffer;
+    HRESULT hr;
+    DWORD length, max;
+    BYTE *data, *data2;
+
+    if(!pMFCreateMemoryBuffer)
+    {
+        win_skip("MFCreateMemoryBuffer() not found\n");
+        return;
+    }
+
+    hr = pMFCreateMemoryBuffer(1024, NULL);
+    ok(hr == E_INVALIDARG || hr == E_POINTER, "got 0x%08x\n", hr);
+
+    hr = pMFCreateMemoryBuffer(0, &buffer);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    if(buffer)
+    {
+        hr = IMFMediaBuffer_GetMaxLength(buffer, &length);
+        ok(hr == S_OK, "got 0x%08x\n", hr);
+        ok(length == 0, "got %u\n", length);
+
+        IMFMediaBuffer_Release(buffer);
+    }
+
+    hr = pMFCreateMemoryBuffer(1024, &buffer);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_GetMaxLength(buffer, NULL);
+    ok(hr == E_INVALIDARG || hr == E_POINTER, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_GetMaxLength(buffer, &length);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(length == 1024, "got %u\n", length);
+
+    hr = IMFMediaBuffer_SetCurrentLength(buffer, 1025);
+    ok(hr == E_INVALIDARG, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_SetCurrentLength(buffer, 10);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_GetCurrentLength(buffer, NULL);
+    ok(hr == E_INVALIDARG || hr == E_POINTER, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_GetCurrentLength(buffer, &length);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(length == 10, "got %u\n", length);
+
+    length = 0;
+    max = 0;
+    hr = IMFMediaBuffer_Lock(buffer, NULL, &length, &max);
+    ok(hr == E_INVALIDARG || hr == E_POINTER, "got 0x%08x\n", hr);
+    ok(length == 0, "got %u\n", length);
+    ok(max == 0, "got %u\n", length);
+
+    hr = IMFMediaBuffer_Lock(buffer, &data, &max, &length);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(length == 10, "got %u\n", length);
+    ok(max == 1024, "got %u\n", max);
+
+    /* Attempt to lock the bufer twice */
+    hr = IMFMediaBuffer_Lock(buffer, &data2, &max, &length);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+    ok(data == data2, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_Unlock(buffer);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_Unlock(buffer);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_Lock(buffer, &data, NULL, NULL);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    hr = IMFMediaBuffer_Unlock(buffer);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    /* Extra Unlock */
+    hr = IMFMediaBuffer_Unlock(buffer);
+    ok(hr == S_OK, "got 0x%08x\n", hr);
+
+    IMFMediaBuffer_Release(buffer);
+}
+
 START_TEST(mfplat)
 {
     CoInitialize(NULL);
@@ -285,6 +374,7 @@ START_TEST(mfplat)
     test_MFCreateMediaType();
     test_MFCreateAttributes();
     test_MFCreateMFByteStreamOnStream();
+    test_MFCreateMemoryBuffer();
 
     CoUninitialize();
 }

include/mfapi.h

@@ -67,6 +67,7 @@ HRESULT WINAPI MFCancelWorkItem(MFWORKITEM_KEY key);
 HRESULT WINAPI MFCreateAttributes(IMFAttributes **attributes, UINT32 size);
 HRESULT WINAPI MFCreateEventQueue(IMFMediaEventQueue **queue);
 HRESULT WINAPI MFCreateMediaType(IMFMediaType **type);
+HRESULT WINAPI MFCreateMemoryBuffer(DWORD max_length, IMFMediaBuffer **buffer);
 HRESULT WINAPI MFGetTimerPeriodicity(DWORD *periodicity);
 HRESULT WINAPI MFTEnum(GUID category, UINT32 flags, MFT_REGISTER_TYPE_INFO *input_type,
                        MFT_REGISTER_TYPE_INFO *output_type, IMFAttributes *attributes,