Sweden-Number/dlls/winegstreamer/mfplat.c

/*
 * Copyright 2019 Nikolay Sivov for CodeWeavers
 * Copyright 2020 Zebediah Figura 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 "ks.h"
#include "ksmedia.h"

#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(mfplat);

struct video_processor
{
    IMFTransform IMFTransform_iface;
    LONG refcount;
    IMFAttributes *attributes;
    IMFAttributes *output_attributes;
};

static struct video_processor *impl_video_processor_from_IMFTransform(IMFTransform *iface)
{
    return CONTAINING_RECORD(iface, struct video_processor, IMFTransform_iface);
}

static HRESULT WINAPI video_processor_QueryInterface(IMFTransform *iface, REFIID riid, void **obj)
{
    TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), obj);

    if (IsEqualIID(riid, &IID_IMFTransform) ||
            IsEqualIID(riid, &IID_IUnknown))
    {
        *obj = iface;
        IMFTransform_AddRef(iface);
        return S_OK;
    }

    WARN("Unsupported %s.\n", debugstr_guid(riid));
    *obj = NULL;
    return E_NOINTERFACE;
}

static ULONG WINAPI video_processor_AddRef(IMFTransform *iface)
{
    struct video_processor *transform = impl_video_processor_from_IMFTransform(iface);
    ULONG refcount = InterlockedIncrement(&transform->refcount);

    TRACE("%p, refcount %u.\n", iface, refcount);

    return refcount;
}

static ULONG WINAPI video_processor_Release(IMFTransform *iface)
{
    struct video_processor *transform = impl_video_processor_from_IMFTransform(iface);
    ULONG refcount = InterlockedDecrement(&transform->refcount);

    TRACE("%p, refcount %u.\n", iface, refcount);

    if (!refcount)
    {
        if (transform->attributes)
            IMFAttributes_Release(transform->attributes);
        if (transform->output_attributes)
            IMFAttributes_Release(transform->output_attributes);
        free(transform);
    }

    return refcount;
}

static HRESULT WINAPI video_processor_GetStreamLimits(IMFTransform *iface, DWORD *input_minimum, DWORD *input_maximum,
        DWORD *output_minimum, DWORD *output_maximum)
{
    TRACE("%p, %p, %p, %p, %p.\n", iface, input_minimum, input_maximum, output_minimum, output_maximum);

    *input_minimum = *input_maximum = *output_minimum = *output_maximum = 1;

    return S_OK;
}

static HRESULT WINAPI video_processor_GetStreamCount(IMFTransform *iface, DWORD *inputs, DWORD *outputs)
{
    TRACE("%p, %p, %p.\n", iface, inputs, outputs);

    *inputs = *outputs = 1;

    return S_OK;
}

static HRESULT WINAPI video_processor_GetStreamIDs(IMFTransform *iface, DWORD input_size, DWORD *inputs,
        DWORD output_size, DWORD *outputs)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetInputStreamInfo(IMFTransform *iface, DWORD id, MFT_INPUT_STREAM_INFO *info)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetOutputStreamInfo(IMFTransform *iface, DWORD id, MFT_OUTPUT_STREAM_INFO *info)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetAttributes(IMFTransform *iface, IMFAttributes **attributes)
{
    struct video_processor *transform = impl_video_processor_from_IMFTransform(iface);

    TRACE("%p, %p.\n", iface, attributes);

    *attributes = transform->attributes;
    IMFAttributes_AddRef(*attributes);

    return S_OK;
}

static HRESULT WINAPI video_processor_GetInputStreamAttributes(IMFTransform *iface, DWORD id,
        IMFAttributes **attributes)
{
    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetOutputStreamAttributes(IMFTransform *iface, DWORD id,
        IMFAttributes **attributes)
{
    struct video_processor *transform = impl_video_processor_from_IMFTransform(iface);

    TRACE("%p, %u, %p.\n", iface, id, attributes);

    *attributes = transform->output_attributes;
    IMFAttributes_AddRef(*attributes);

    return S_OK;
}

static HRESULT WINAPI video_processor_DeleteInputStream(IMFTransform *iface, DWORD id)
{
    TRACE("%p, %u.\n", iface, id);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_AddInputStreams(IMFTransform *iface, DWORD streams, DWORD *ids)
{
    TRACE("%p, %u, %p.\n", iface, streams, ids);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetInputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
        IMFMediaType **type)
{
    FIXME("%p, %u, %u, %p.\n", iface, id, index, type);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetOutputAvailableType(IMFTransform *iface, DWORD id, DWORD index,
        IMFMediaType **type)
{
    FIXME("%p, %u, %u, %p.\n", iface, id, index, type);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_SetInputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
{
    FIXME("%p, %u, %p, %#x.\n", iface, id, type, flags);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_SetOutputType(IMFTransform *iface, DWORD id, IMFMediaType *type, DWORD flags)
{
    FIXME("%p, %u, %p, %#x.\n", iface, id, type, flags);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetInputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
{
    FIXME("%p, %u, %p.\n", iface, id, type);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetOutputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
{
    FIXME("%p, %u, %p.\n", iface, id, type);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetInputStatus(IMFTransform *iface, DWORD id, DWORD *flags)
{
    FIXME("%p, %u, %p.\n", iface, id, flags);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_GetOutputStatus(IMFTransform *iface, DWORD *flags)
{
    FIXME("%p, %p.\n", iface, flags);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_SetOutputBounds(IMFTransform *iface, LONGLONG lower, LONGLONG upper)
{
    FIXME("%p, %s, %s.\n", iface, wine_dbgstr_longlong(lower), wine_dbgstr_longlong(upper));

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_ProcessEvent(IMFTransform *iface, DWORD id, IMFMediaEvent *event)
{
    TRACE("%p, %u, %p.\n", iface, id, event);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_ProcessMessage(IMFTransform *iface, MFT_MESSAGE_TYPE message, ULONG_PTR param)
{
    FIXME("%p, %u.\n", iface, message);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_ProcessInput(IMFTransform *iface, DWORD id, IMFSample *sample, DWORD flags)
{
    FIXME("%p, %u, %p, %#x.\n", iface, id, sample, flags);

    return E_NOTIMPL;
}

static HRESULT WINAPI video_processor_ProcessOutput(IMFTransform *iface, DWORD flags, DWORD count,
        MFT_OUTPUT_DATA_BUFFER *samples, DWORD *status)
{
    FIXME("%p, %#x, %u, %p, %p.\n", iface, flags, count, samples, status);

    return E_NOTIMPL;
}

static const IMFTransformVtbl video_processor_vtbl =
{
    video_processor_QueryInterface,
    video_processor_AddRef,
    video_processor_Release,
    video_processor_GetStreamLimits,
    video_processor_GetStreamCount,
    video_processor_GetStreamIDs,
    video_processor_GetInputStreamInfo,
    video_processor_GetOutputStreamInfo,
    video_processor_GetAttributes,
    video_processor_GetInputStreamAttributes,
    video_processor_GetOutputStreamAttributes,
    video_processor_DeleteInputStream,
    video_processor_AddInputStreams,
    video_processor_GetInputAvailableType,
    video_processor_GetOutputAvailableType,
    video_processor_SetInputType,
    video_processor_SetOutputType,
    video_processor_GetInputCurrentType,
    video_processor_GetOutputCurrentType,
    video_processor_GetInputStatus,
    video_processor_GetOutputStatus,
    video_processor_SetOutputBounds,
    video_processor_ProcessEvent,
    video_processor_ProcessMessage,
    video_processor_ProcessInput,
    video_processor_ProcessOutput,
};

struct class_factory
{
    IClassFactory IClassFactory_iface;
    LONG refcount;
    HRESULT (*create_instance)(REFIID riid, void **obj);
};

static struct class_factory *impl_from_IClassFactory(IClassFactory *iface)
{
    return CONTAINING_RECORD(iface, struct class_factory, IClassFactory_iface);
}

static HRESULT WINAPI class_factory_QueryInterface(IClassFactory *iface, REFIID riid, void **obj)
{
    TRACE("%p, %s, %p.\n", iface, debugstr_guid(riid), obj);

    if (IsEqualGUID(riid, &IID_IClassFactory) ||
            IsEqualGUID(riid, &IID_IUnknown))
    {
        *obj = iface;
        IClassFactory_AddRef(iface);
        return S_OK;
    }

    WARN("%s is not supported.\n", debugstr_guid(riid));
    *obj = NULL;
    return E_NOINTERFACE;
}

static ULONG WINAPI class_factory_AddRef(IClassFactory *iface)
{
    struct class_factory *factory = impl_from_IClassFactory(iface);
    return InterlockedIncrement(&factory->refcount);
}

static ULONG WINAPI class_factory_Release(IClassFactory *iface)
{
    struct class_factory *factory = impl_from_IClassFactory(iface);
    ULONG refcount = InterlockedDecrement(&factory->refcount);

    if (!refcount)
        free(factory);

    return refcount;
}

static HRESULT WINAPI class_factory_CreateInstance(IClassFactory *iface, IUnknown *outer, REFIID riid, void **obj)
{
    struct class_factory *factory = impl_from_IClassFactory(iface);

    TRACE("%p, %p, %s, %p.\n", iface, outer, debugstr_guid(riid), obj);

    if (outer)
    {
        *obj = NULL;
        return CLASS_E_NOAGGREGATION;
    }

    return factory->create_instance(riid, obj);
}

static HRESULT WINAPI class_factory_LockServer(IClassFactory *iface, BOOL dolock)
{
    TRACE("%p, %d.\n", iface, dolock);

    if (dolock)
        InterlockedIncrement(&object_locks);
    else
        InterlockedDecrement(&object_locks);

    return S_OK;
}

static const IClassFactoryVtbl class_factory_vtbl =
{
    class_factory_QueryInterface,
    class_factory_AddRef,
    class_factory_Release,
    class_factory_CreateInstance,
    class_factory_LockServer,
};

static HRESULT video_processor_create(REFIID riid, void **ret)
{
    struct video_processor *object;
    HRESULT hr;

    if (!(object = calloc(1, sizeof(*object))))
        return E_OUTOFMEMORY;

    object->IMFTransform_iface.lpVtbl = &video_processor_vtbl;
    object->refcount = 1;

    if (FAILED(hr = MFCreateAttributes(&object->attributes, 0)))
        goto failed;

    if (FAILED(hr = MFCreateAttributes(&object->output_attributes, 0)))
        goto failed;

    *ret = &object->IMFTransform_iface;
    return S_OK;

failed:

    IMFTransform_Release(&object->IMFTransform_iface);
    return hr;
}

static const GUID CLSID_GStreamerByteStreamHandler = {0x317df618, 0x5e5a, 0x468a, {0x9f, 0x15, 0xd8, 0x27, 0xa9, 0xa0, 0x81, 0x62}};

static const GUID CLSID_WINEAudioConverter = {0x6a170414,0xaad9,0x4693,{0xb8,0x06,0x3a,0x0c,0x47,0xc5,0x70,0xd6}};

static const struct class_object
{
    const GUID *clsid;
    HRESULT (*create_instance)(REFIID riid, void **obj);
}
class_objects[] =
{
    { &CLSID_VideoProcessorMFT, &video_processor_create },
    { &CLSID_GStreamerByteStreamHandler, &winegstreamer_stream_handler_create },
    { &CLSID_WINEAudioConverter, &audio_converter_create },
};

HRESULT mfplat_get_class_object(REFCLSID rclsid, REFIID riid, void **obj)
{
    struct class_factory *factory;
    unsigned int i;
    HRESULT hr;

    for (i = 0; i < ARRAY_SIZE(class_objects); ++i)
    {
        if (IsEqualGUID(class_objects[i].clsid, rclsid))
        {
            if (!(factory = malloc(sizeof(*factory))))
                return E_OUTOFMEMORY;

            factory->IClassFactory_iface.lpVtbl = &class_factory_vtbl;
            factory->refcount = 1;
            factory->create_instance = class_objects[i].create_instance;

            hr = IClassFactory_QueryInterface(&factory->IClassFactory_iface, riid, obj);
            IClassFactory_Release(&factory->IClassFactory_iface);
            return hr;
        }
    }

    return CLASS_E_CLASSNOTAVAILABLE;
}

static WCHAR audio_converterW[] = L"Audio Converter";
static const GUID *audio_converter_supported_types[] =
{
    &MFAudioFormat_PCM,
    &MFAudioFormat_Float,
};

static const struct mft
{
    const GUID *clsid;
    const GUID *category;
    LPWSTR name;
    const UINT32 flags;
    const GUID *major_type;
    const UINT32 input_types_count;
    const GUID **input_types;
    const UINT32 output_types_count;
    const GUID **output_types;
}
mfts[] =
{
    {
        &CLSID_WINEAudioConverter,
        &MFT_CATEGORY_AUDIO_EFFECT,
        audio_converterW,
        MFT_ENUM_FLAG_SYNCMFT,
        &MFMediaType_Audio,
        ARRAY_SIZE(audio_converter_supported_types),
        audio_converter_supported_types,
        ARRAY_SIZE(audio_converter_supported_types),
        audio_converter_supported_types,
    },
};

HRESULT mfplat_DllRegisterServer(void)
{
    unsigned int i, j;
    HRESULT hr;
    MFT_REGISTER_TYPE_INFO input_types[2], output_types[2];

    for (i = 0; i < ARRAY_SIZE(mfts); i++)
    {
        const struct mft *cur = &mfts[i];

        for (j = 0; j < cur->input_types_count; j++)
        {
            input_types[j].guidMajorType = *(cur->major_type);
            input_types[j].guidSubtype = *(cur->input_types[j]);
        }
        for (j = 0; j < cur->output_types_count; j++)
        {
            output_types[j].guidMajorType = *(cur->major_type);
            output_types[j].guidSubtype = *(cur->output_types[j]);
        }

        hr = MFTRegister(*(cur->clsid), *(cur->category), cur->name, cur->flags, cur->input_types_count,
                    input_types, cur->output_types_count, output_types, NULL);

        if (FAILED(hr))
        {
            FIXME("Failed to register MFT, hr %#x\n", hr);
            return hr;
        }
    }
    return S_OK;
}

static const struct
{
    const GUID *subtype;
    enum wg_video_format format;
}
video_formats[] =
{
    {&MFVideoFormat_ARGB32, WG_VIDEO_FORMAT_BGRA},
    {&MFVideoFormat_RGB32,  WG_VIDEO_FORMAT_BGRx},
    {&MFVideoFormat_RGB24,  WG_VIDEO_FORMAT_BGR},
    {&MFVideoFormat_RGB555, WG_VIDEO_FORMAT_RGB15},
    {&MFVideoFormat_RGB565, WG_VIDEO_FORMAT_RGB16},
    {&MFVideoFormat_AYUV,   WG_VIDEO_FORMAT_AYUV},
    {&MFVideoFormat_I420,   WG_VIDEO_FORMAT_I420},
    {&MFVideoFormat_NV12,   WG_VIDEO_FORMAT_NV12},
    {&MFVideoFormat_UYVY,   WG_VIDEO_FORMAT_UYVY},
    {&MFVideoFormat_YUY2,   WG_VIDEO_FORMAT_YUY2},
    {&MFVideoFormat_YV12,   WG_VIDEO_FORMAT_YV12},
    {&MFVideoFormat_YVYU,   WG_VIDEO_FORMAT_YVYU},
};

static const struct
{
    const GUID *subtype;
    UINT32 depth;
    enum wg_audio_format format;
}
audio_formats[] =
{
    {&MFAudioFormat_PCM,     8, WG_AUDIO_FORMAT_U8},
    {&MFAudioFormat_PCM,    16, WG_AUDIO_FORMAT_S16LE},
    {&MFAudioFormat_PCM,    24, WG_AUDIO_FORMAT_S24LE},
    {&MFAudioFormat_PCM,    32, WG_AUDIO_FORMAT_S32LE},
    {&MFAudioFormat_Float,  32, WG_AUDIO_FORMAT_F32LE},
    {&MFAudioFormat_Float,  64, WG_AUDIO_FORMAT_F64LE},
};

static inline UINT64 make_uint64(UINT32 high, UINT32 low)
{
    return ((UINT64)high << 32) | low;
}

static IMFMediaType *mf_media_type_from_wg_format_audio(const struct wg_format *format)
{
    IMFMediaType *type;
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(audio_formats); ++i)
    {
        if (format->u.audio.format == audio_formats[i].format)
        {
            if (FAILED(MFCreateMediaType(&type)))
                return NULL;

            IMFMediaType_SetGUID(type, &MF_MT_MAJOR_TYPE, &MFMediaType_Audio);
            IMFMediaType_SetGUID(type, &MF_MT_SUBTYPE, audio_formats[i].subtype);
            IMFMediaType_SetUINT32(type, &MF_MT_AUDIO_BITS_PER_SAMPLE, audio_formats[i].depth);
            IMFMediaType_SetUINT32(type, &MF_MT_AUDIO_SAMPLES_PER_SECOND, format->u.audio.rate);
            IMFMediaType_SetUINT32(type, &MF_MT_AUDIO_NUM_CHANNELS, format->u.audio.channels);
            IMFMediaType_SetUINT32(type, &MF_MT_AUDIO_CHANNEL_MASK, format->u.audio.channel_mask);

            return type;
        }
    }

    return NULL;
}

static IMFMediaType *mf_media_type_from_wg_format_video(const struct wg_format *format)
{
    IMFMediaType *type;
    unsigned int i;

    for (i = 0; i < ARRAY_SIZE(video_formats); ++i)
    {
        if (format->u.video.format == video_formats[i].format)
        {
            if (FAILED(MFCreateMediaType(&type)))
                return NULL;

            IMFMediaType_SetGUID(type, &MF_MT_MAJOR_TYPE, &MFMediaType_Video);
            IMFMediaType_SetGUID(type, &MF_MT_SUBTYPE, video_formats[i].subtype);
            IMFMediaType_SetUINT64(type, &MF_MT_FRAME_SIZE,
                    make_uint64(format->u.video.width, format->u.video.height));
            IMFMediaType_SetUINT64(type, &MF_MT_FRAME_RATE,
                    make_uint64(format->u.video.fps_n, format->u.video.fps_d));
            IMFMediaType_SetUINT32(type, &MF_MT_COMPRESSED, FALSE);

            return type;
        }
    }

    return NULL;
}

IMFMediaType *mf_media_type_from_wg_format(const struct wg_format *format)
{
    switch (format->major_type)
    {
        case WG_MAJOR_TYPE_UNKNOWN:
            return NULL;

        case WG_MAJOR_TYPE_AUDIO:
            return mf_media_type_from_wg_format_audio(format);

        case WG_MAJOR_TYPE_VIDEO:
            return mf_media_type_from_wg_format_video(format);
    }

    assert(0);
    return NULL;
}

static void mf_media_type_to_wg_format_audio(IMFMediaType *type, struct wg_format *format)
{
    UINT32 rate, channels, channel_mask, depth;
    unsigned int i;
    GUID subtype;

    if (FAILED(IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
    {
        FIXME("Subtype is not set.\n");
        return;
    }
    if (FAILED(IMFMediaType_GetUINT32(type, &MF_MT_AUDIO_SAMPLES_PER_SECOND, &rate)))
    {
        FIXME("Sample rate is not set.\n");
        return;
    }
    if (FAILED(IMFMediaType_GetUINT32(type, &MF_MT_AUDIO_NUM_CHANNELS, &channels)))
    {
        FIXME("Channel count is not set.\n");
        return;
    }
    if (FAILED(IMFMediaType_GetUINT32(type, &MF_MT_AUDIO_BITS_PER_SAMPLE, &depth)))
    {
        FIXME("Depth is not set.\n");
        return;
    }
    if (FAILED(IMFMediaType_GetUINT32(type, &MF_MT_AUDIO_CHANNEL_MASK, &channel_mask)))
    {
        if (channels == 1)
            channel_mask = KSAUDIO_SPEAKER_MONO;
        else if (channels == 2)
            channel_mask = KSAUDIO_SPEAKER_STEREO;
        else
        {
            FIXME("Channel mask is not set.\n");
            return;
        }
    }

    format->major_type = WG_MAJOR_TYPE_AUDIO;
    format->u.audio.channels = channels;
    format->u.audio.channel_mask = channel_mask;
    format->u.audio.rate = rate;

    for (i = 0; i < ARRAY_SIZE(audio_formats); ++i)
    {
        if (IsEqualGUID(&subtype, audio_formats[i].subtype) && depth == audio_formats[i].depth)
        {
            format->u.audio.format = audio_formats[i].format;
            return;
        }
    }
    FIXME("Unrecognized audio subtype %s, depth %u.\n", debugstr_guid(&subtype), depth);
}

static void mf_media_type_to_wg_format_video(IMFMediaType *type, struct wg_format *format)
{
    UINT64 frame_rate, frame_size;
    unsigned int i;
    GUID subtype;

    if (FAILED(IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
    {
        FIXME("Subtype is not set.\n");
        return;
    }
    if (FAILED(IMFMediaType_GetUINT64(type, &MF_MT_FRAME_SIZE, &frame_size)))
    {
        FIXME("Frame size is not set.\n");
        return;
    }

    format->major_type = WG_MAJOR_TYPE_VIDEO;
    format->u.video.width = (UINT32)(frame_size >> 32);
    format->u.video.height = (UINT32)frame_size;
    format->u.video.fps_n = 1;
    format->u.video.fps_d = 1;

    if (SUCCEEDED(IMFMediaType_GetUINT64(type, &MF_MT_FRAME_RATE, &frame_rate)) && (UINT32)frame_rate)
    {
        format->u.video.fps_n = (UINT32)(frame_rate >> 32);
        format->u.video.fps_d = (UINT32)frame_rate;
    }

    for (i = 0; i < ARRAY_SIZE(video_formats); ++i)
    {
        if (IsEqualGUID(&subtype, video_formats[i].subtype))
        {
            format->u.video.format = video_formats[i].format;
            return;
        }
    }
    FIXME("Unrecognized video subtype %s.\n", debugstr_guid(&subtype));
}

void mf_media_type_to_wg_format(IMFMediaType *type, struct wg_format *format)
{
    GUID major_type;

    memset(format, 0, sizeof(*format));

    if (FAILED(IMFMediaType_GetMajorType(type, &major_type)))
    {
        FIXME("Major type is not set.\n");
        return;
    }

    if (IsEqualGUID(&major_type, &MFMediaType_Audio))
        mf_media_type_to_wg_format_audio(type, format);
    else if (IsEqualGUID(&major_type, &MFMediaType_Video))
        mf_media_type_to_wg_format_video(type, format);
    else
        FIXME("Unrecognized major type %s.\n", debugstr_guid(&major_type));
}