/*
 * Unit tests for dmusic functions
 *
 * Copyright (C) 2012 Christian Costa
 *
 * 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
 */

#define COBJMACROS

#include <stdio.h>

#include "wine/test.h"
#include "uuids.h"
#include "ole2.h"
#include "initguid.h"
#include "dmusici.h"
#include "dmksctrl.h"

static void test_dmusic(void)
{
    IDirectMusic *dmusic = NULL;
    HRESULT hr;
    ULONG index = 0;
    DMUS_PORTCAPS port_caps;
    DMUS_PORTPARAMS port_params;
    IDirectMusicPort *port = NULL;
    DMUS_CLOCKINFO clock_info;
    GUID guid_clock;
    IReferenceClock *clock = NULL;

    hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic, (LPVOID*)&dmusic);
    ok(hr == S_OK, "Cannot create DirectMusic object (%x)\n", hr);

    hr = IDirectMusic_GetMasterClock(dmusic, &guid_clock, &clock);
    ok(hr == S_OK, "IDirectMusic_GetMasterClock returned: %x\n", hr);
    ok(clock != NULL, "No clock returned\n");
    trace("  guidPort = %s\n", wine_dbgstr_guid(&guid_clock));
    if (clock)
        IReferenceClock_Release(clock);

    port_params.dwSize = sizeof(port_params);
    port_params.dwValidParams = DMUS_PORTPARAMS_CHANNELGROUPS | DMUS_PORTPARAMS_AUDIOCHANNELS;
    port_params.dwChannelGroups = 1;
    port_params.dwAudioChannels = 2;

    /* No port can be created before SetDirectSound is called */
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, &port_params, &port, NULL);
    ok(hr == DMUS_E_DSOUND_NOT_SET, "IDirectMusic_CreatePort returned: %x\n", hr);

    hr = IDirectMusic_SetDirectSound(dmusic, NULL, NULL);
    ok(hr == S_OK, "IDirectMusic_SetDirectSound returned: %x\n", hr);

    /* Check wrong params */
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, &port_params, &port, (IUnknown*)dmusic);
    ok(hr == CLASS_E_NOAGGREGATION, "IDirectMusic_CreatePort returned: %x\n", hr);
    hr = IDirectMusic_CreatePort(dmusic, NULL, &port_params, &port, NULL);
    ok(hr == E_POINTER, "IDirectMusic_CreatePort returned: %x\n", hr);
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, NULL, &port, NULL);
    ok(hr == E_INVALIDARG, "IDirectMusic_CreatePort returned: %x\n", hr);
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, &port_params, NULL, NULL);
    ok(hr == E_POINTER, "IDirectMusic_CreatePort returned: %x\n", hr);

    /* Test creation of default port with GUID_NULL */
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, &port_params, &port, NULL);
    ok(hr == S_OK, "IDirectMusic_CreatePort returned: %x\n", hr);

    port_caps.dwSize = sizeof(port_caps);
    while (IDirectMusic_EnumPort(dmusic, index, &port_caps) == S_OK)
    {
        ok(port_caps.dwSize == sizeof(port_caps), "DMUS_PORTCAPS dwSize member is wrong (%u)\n", port_caps.dwSize);
        trace("Port %u:\n", index);
        trace("  dwFlags            = %x\n", port_caps.dwFlags);
        trace("  guidPort           = %s\n", wine_dbgstr_guid(&port_caps.guidPort));
        trace("  dwClass            = %u\n", port_caps.dwClass);
        trace("  dwType             = %u\n", port_caps.dwType);
        trace("  dwMemorySize       = %u\n", port_caps.dwMemorySize);
        trace("  dwMaxChannelGroups = %u\n", port_caps.dwMaxChannelGroups);
        trace("  dwMaxVoices        = %u\n", port_caps.dwMaxVoices);
        trace("  dwMaxAudioChannels = %u\n", port_caps.dwMaxAudioChannels);
        trace("  dwEffectFlags      = %x\n", port_caps.dwEffectFlags);
        trace("  wszDescription     = %s\n", wine_dbgstr_w(port_caps.wszDescription));
        index++;
    }

    index = 0;
    clock_info.dwSize = sizeof(clock_info);
    while (IDirectMusic_EnumMasterClock(dmusic, index, &clock_info) == S_OK)
    {
        ok(clock_info.dwSize == sizeof(clock_info), "DMUS_CLOCKINFO dwSize member is wrong (%u)\n", clock_info.dwSize);
        trace("Clock %u:\n", index);
        trace("  ctType         = %u\n", clock_info.ctType);
        trace("  guidClock      = %s\n", wine_dbgstr_guid(&clock_info.guidClock));
        trace("  wszDescription = %s\n", wine_dbgstr_w(clock_info.wszDescription));
        index++;
    }

    if (port)
        IDirectMusicPort_Release(port);
    IDirectMusic_Release(dmusic);
}

static ULONG get_refcount(IDirectSound *iface)
{
    IDirectSound_AddRef(iface);
    return IDirectSound_Release(iface);
}

static void test_setdsound(void)
{
    IDirectMusic *dmusic;
    IDirectSound *dsound, *dsound2;
    DMUS_PORTPARAMS params;
    IDirectMusicPort *port = NULL;
    HRESULT hr;
    ULONG ref;

    params.dwSize = sizeof(params);
    params.dwValidParams = DMUS_PORTPARAMS_CHANNELGROUPS | DMUS_PORTPARAMS_AUDIOCHANNELS;
    params.dwChannelGroups = 1;
    params.dwAudioChannels = 2;

    /* Old dsound without SetCooperativeLevel() */
    hr = DirectSoundCreate(NULL, &dsound, NULL);
    if (hr == DSERR_NODRIVER ) {
        skip("No driver\n");
        return;
    }
    ok(hr == S_OK, "DirectSoundCreate failed: %08x\n", hr);
    hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic8,
            (void **)&dmusic);
    ok(hr == S_OK, "DirectMusic create failed: %08x\n", hr);
    hr = IDirectMusic_SetDirectSound(dmusic, dsound, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, &params, &port, NULL);
    ok(hr == S_OK, "CreatePort returned: %x\n", hr);
    IDirectMusicPort_Release(port);
    IDirectMusic_Release(dmusic);
    IDirectSound_Release(dsound);

    /* dsound ref counting */
    hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic8,
            (void **)&dmusic);
    ok(hr == S_OK, "DirectMusic create failed: %08x\n", hr);
    hr = DirectSoundCreate8(NULL, (IDirectSound8 **)&dsound, NULL);
    ok(hr == S_OK, "DirectSoundCreate failed: %08x\n", hr);
    hr = IDirectSound_SetCooperativeLevel(dsound, GetForegroundWindow(), DSSCL_PRIORITY);
    ok(hr == S_OK, "SetCooperativeLevel failed: %08x\n", hr);
    hr = IDirectMusic_SetDirectSound(dmusic, dsound, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 2, "dsound ref count got %d expected 2\n", ref);
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, &params, &port, NULL);
    ok(hr == S_OK, "CreatePort returned: %x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 2, "dsound ref count got %d expected 2\n", ref);
    IDirectMusicPort_AddRef(port);
    ref = IDirectMusicPort_Release(port);
    ok(ref == 1, "port ref count got %d expected 1\n", ref);
    hr = IDirectMusicPort_Activate(port, TRUE);
    ok(hr == S_OK, "Port Activate returned: %x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 4, "dsound ref count got %d expected 4\n", ref);
    IDirectMusicPort_AddRef(port);
    ref = IDirectMusicPort_Release(port);
    ok(ref == 1, "port ref count got %d expected 1\n", ref);

    /* Releasing dsound from dmusic */
    hr = IDirectMusic_SetDirectSound(dmusic, NULL, NULL);
    ok(hr == DMUS_E_DSOUND_ALREADY_SET, "SetDirectSound failed: %08x\n", hr);
    hr = IDirectMusicPort_Activate(port, FALSE);
    ok(hr == S_OK, "Port Activate returned: %x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 2, "dsound ref count got %d expected 2\n", ref);
    hr = IDirectMusic_SetDirectSound(dmusic, NULL, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 1, "dsound ref count got %d expected 1\n", ref);

    /* Setting the same dsound twice */
    hr = IDirectMusic_SetDirectSound(dmusic, dsound, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 2, "dsound ref count got %d expected 2\n", ref);
    hr = IDirectMusic_SetDirectSound(dmusic, dsound, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 2, "dsound ref count got %d expected 2\n", ref);

    /* Replacing one dsound with another */
    hr = DirectSoundCreate8(NULL, (IDirectSound8 **)&dsound2, NULL);
    ok(hr == S_OK, "DirectSoundCreate failed: %08x\n", hr);
    hr = IDirectMusic_SetDirectSound(dmusic, dsound2, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 1, "dsound ref count got %d expected 1\n", ref);
    ref = get_refcount(dsound2);
    ok(ref == 2, "dsound2 ref count got %d expected 2\n", ref);

    /* Replacing the dsound in the port */
    hr = IDirectMusicPort_SetDirectSound(port, dsound, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 2, "dsound ref count got %d expected 2\n", ref);
    ref = get_refcount(dsound2);
    ok(ref == 2, "dsound2 ref count got %d expected 2\n", ref);
    /* Setting the dsound again on the port will mess with the parent dmusic */
    hr = IDirectMusicPort_SetDirectSound(port, dsound, NULL);
    ok(hr == S_OK, "SetDirectSound failed: %08x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 3, "dsound ref count got %d expected 3\n", ref);
    ref = get_refcount(dsound2);
    ok(ref == 1, "dsound2 ref count got %d expected 1\n", ref);
    IDirectSound_AddRef(dsound2); /* Crash prevention */
    hr = IDirectMusicPort_Activate(port, TRUE);
    ok(hr == S_OK, "Activate returned: %x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 4, "dsound ref count got %d expected 4\n", ref);
    ref = get_refcount(dsound2);
    ok(ref == 2, "dsound2 ref count got %d expected 2\n", ref);
    hr = IDirectMusicPort_Activate(port, TRUE);
    ok(hr == S_FALSE, "Activate returned: %x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 4, "dsound ref count got %d expected 4\n", ref);
    ref = get_refcount(dsound2);
    ok(ref == 2, "dsound2 ref count got %d expected 2\n", ref);

    /* Deactivating the port messes with the dsound refcount in the parent dmusic */
    hr = IDirectMusicPort_Activate(port, FALSE);
    ok(hr == S_OK, "Port Activate returned: %x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 3, "dsound ref count got %d expected 3\n", ref);
    ref = get_refcount(dsound2);
    ok(ref == 1, "dsound2 ref count got %d expected 1\n", ref);
    hr = IDirectMusicPort_Activate(port, FALSE);
    ok(hr == S_FALSE, "Port Activate returned: %x\n", hr);
    ref = get_refcount(dsound);
    ok(ref == 3, "dsound ref count got %d expected 3\n", ref);
    ref = get_refcount(dsound2);
    ok(ref == 1, "dsound2 ref count got %d expected 1\n", ref);

    IDirectMusicPort_Release(port);
    IDirectMusic_Release(dmusic);
    while (IDirectSound_Release(dsound));
}

static void test_dmbuffer(void)
{
    IDirectMusic *dmusic;
    IDirectMusicBuffer *dmbuffer = NULL;
    HRESULT hr;
    DMUS_BUFFERDESC desc;
    GUID format;
    DWORD size;
    DWORD bytes;
    REFERENCE_TIME time;
    LPBYTE data;

    hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic, (LPVOID*)&dmusic);
    ok(hr == S_OK, "Cannot create DirectMusic object (%x)\n", hr);

    desc.dwSize = sizeof(DMUS_BUFFERDESC);
    desc.dwFlags = 0;
    desc.cbBuffer = 1023;
    memcpy(&desc.guidBufferFormat, &GUID_NULL, sizeof(GUID));

    hr = IDirectMusic_CreateMusicBuffer(dmusic, &desc, &dmbuffer, NULL);
    ok(hr == S_OK, "IDirectMusic_CreateMusicBuffer return %x\n", hr);

    hr = IDirectMusicBuffer_GetBufferFormat(dmbuffer, &format);
    ok(hr == S_OK, "IDirectMusicBuffer_GetBufferFormat returned %x\n", hr);
    ok(IsEqualGUID(&format, &KSDATAFORMAT_SUBTYPE_MIDI), "Wrong format returned %s\n", wine_dbgstr_guid(&format));
    hr = IDirectMusicBuffer_GetMaxBytes(dmbuffer, &size);
    ok(hr == S_OK, "IDirectMusicBuffer_GetMaxBytes returned %x\n", hr);
    ok(size == 1024, "Buffer size is %u instead of 1024\n", size);

    hr = IDirectMusicBuffer_GetStartTime(dmbuffer, &time);
    ok(hr == DMUS_E_BUFFER_EMPTY, "IDirectMusicBuffer_GetStartTime returned %x\n", hr);
    hr = IDirectMusicBuffer_SetStartTime(dmbuffer, 10);
    ok(hr == S_OK, "IDirectMusicBuffer_GetStartTime returned %x\n", hr);
    hr = IDirectMusicBuffer_GetStartTime(dmbuffer, &time);
    ok(hr == DMUS_E_BUFFER_EMPTY, "IDirectMusicBuffer_GetStartTime returned %x\n", hr);

    hr = IDirectMusicBuffer_PackStructured(dmbuffer, 20, 0, 0);
    ok(hr == DMUS_E_INVALID_EVENT, "IDirectMusicBuffer_PackStructured returned %x\n", hr);
    hr = IDirectMusicBuffer_PackStructured(dmbuffer, 20, 0, 0x000090); /* note on : chan 0, note 0 & vel 0 */
    ok(hr == S_OK, "IDirectMusicBuffer_PackStructured returned %x\n", hr);
    hr = IDirectMusicBuffer_PackStructured(dmbuffer, 30, 0, 0x000080); /* note off : chan 0, note 0 & vel 0 */
    ok(hr == S_OK, "IDirectMusicBuffer_PackStructured returned %x\n", hr);
    hr = IDirectMusicBuffer_GetUsedBytes(dmbuffer, &bytes);
    ok(hr == S_OK, "IDirectMusicBuffer_GetUsedBytes returned %x\n", hr);
    ok(bytes == 48, "Buffer size is %u instead of 48\n", bytes);

    hr = IDirectMusicBuffer_GetStartTime(dmbuffer, &time);
    ok(hr == S_OK, "IDirectMusicBuffer_GetStartTime returned %x\n", hr);
    ok(time == 20, "Buffer start time is wrong\n");
    hr = IDirectMusicBuffer_SetStartTime(dmbuffer, 40);
    ok(hr == S_OK, "IDirectMusicBuffer_GetStartTime returned %x\n", hr);
    hr = IDirectMusicBuffer_GetStartTime(dmbuffer, &time);
    ok(hr == S_OK, "IDirectMusicBuffer_GetStartTime returned %x\n", hr);
    ok(time == 40, "Buffer start time is wrong\n");

    hr = IDirectMusicBuffer_GetRawBufferPtr(dmbuffer, &data);
    ok(hr == S_OK, "IDirectMusicBuffer_GetRawBufferPtr returned %x\n", hr);
    if (hr == S_OK)
    {
        DMUS_EVENTHEADER* header;
        DWORD message;

        /* Check message 1 */
        header = (DMUS_EVENTHEADER*)data;
        data += sizeof(DMUS_EVENTHEADER);
        ok(header->cbEvent == 3, "cbEvent is %u instead of 3\n", header->cbEvent);
        ok(header->dwChannelGroup == 0, "dwChannelGroup is %u instead of 0\n", header->dwChannelGroup);
        ok(header->rtDelta == 0, "rtDelta is %s instead of 0\n", wine_dbgstr_longlong(header->rtDelta));
        ok(header->dwFlags == DMUS_EVENT_STRUCTURED, "dwFlags is %x instead of %x\n", header->dwFlags, DMUS_EVENT_STRUCTURED);
        message = *(DWORD*)data & 0xffffff; /* Only 3 bytes are relevant */
        data += sizeof(DWORD);
        ok(message == 0x000090, "Message is %0x instead of 0x000090\n", message);

        /* Check message 2 */
        header = (DMUS_EVENTHEADER*)data;
        data += sizeof(DMUS_EVENTHEADER);
        ok(header->cbEvent == 3, "cbEvent is %u instead of 3\n", header->cbEvent);
        ok(header->dwChannelGroup == 0, "dwChannelGroup is %u instead of 0\n", header->dwChannelGroup);
        ok(header->rtDelta == 10, "rtDelta is %s instead of 0\n", wine_dbgstr_longlong(header->rtDelta));
        ok(header->dwFlags == DMUS_EVENT_STRUCTURED, "dwFlags is %x instead of %x\n", header->dwFlags, DMUS_EVENT_STRUCTURED);
        message = *(DWORD*)data & 0xffffff; /* Only 3 bytes are relevant */
        ok(message == 0x000080, "Message 2 is %0x instead of 0x000080\n", message);
    }

    if (dmbuffer)
        IDirectMusicBuffer_Release(dmbuffer);
    IDirectMusic_Release(dmusic);
}

static void test_COM(void)
{
    IDirectMusic8 *dm8 = (IDirectMusic8*)0xdeadbeef;
    IDirectMusic *dm;
    IUnknown *unk;
    ULONG refcount;
    HRESULT hr;

    /* COM aggregation */
    hr = CoCreateInstance(&CLSID_DirectMusic, (IUnknown *)0xdeadbeef, CLSCTX_INPROC_SERVER, &IID_IUnknown,
            (void**)&dm8);
    ok(hr == CLASS_E_NOAGGREGATION,
            "DirectMusic8 create failed: %08x, expected CLASS_E_NOAGGREGATION\n", hr);
    ok(!dm8, "dm8 = %p\n", dm8);

    /* Invalid RIID */
    hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusicObject,
            (void**)&dm8);
    ok(hr == E_NOINTERFACE, "DirectMusic8 create failed: %08x, expected E_NOINTERFACE\n", hr);

    /* Same refcount for DirectMusic and DirectMusic8 */
    hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic8,
            (void**)&dm8);
    if (hr == E_NOINTERFACE)
    {
        win_skip("DirectMusic too old (no IDirectMusic8)\n");
        return;
    }
    ok(hr == S_OK, "DirectMusic8 create failed: %08x, expected S_OK\n", hr);
    refcount = IDirectMusic8_AddRef(dm8);
    ok(refcount == 2, "refcount == %u, expected 2\n", refcount);

    hr = IDirectMusic8_QueryInterface(dm8, &IID_IDirectMusic, (void**)&dm);
    ok(hr == S_OK, "QueryInterface for IID_IDirectMusic failed: %08x\n", hr);
    refcount = IDirectMusic_AddRef(dm);
    ok(refcount == 4, "refcount == %u, expected 4\n", refcount);
    IDirectMusic_Release(dm);

    hr = IDirectMusic8_QueryInterface(dm8, &IID_IUnknown, (void**)&unk);
    ok(hr == S_OK, "QueryInterface for IID_IUnknown failed: %08x\n", hr);
    refcount = IUnknown_AddRef(unk);
    ok(refcount == 5, "refcount == %u, expected 5\n", refcount);
    refcount = IUnknown_Release(unk);

    ok(refcount == 4, "refcount == %u, expected 4\n", refcount);
    while (IDirectMusic8_Release(dm8));
}

static void test_COM_dmcoll(void)
{
    IDirectMusicCollection *dmc = (IDirectMusicCollection*)0xdeadbeef;
    IDirectMusicObject *dmo;
    IPersistStream *ps;
    IUnknown *unk;
    ULONG refcount;
    HRESULT hr;

    /* COM aggregation */
    hr = CoCreateInstance(&CLSID_DirectMusicCollection, (IUnknown *)0xdeadbeef, CLSCTX_INPROC_SERVER,
            &IID_IUnknown, (void**)&dmc);
    ok(hr == CLASS_E_NOAGGREGATION,
            "DirectMusicCollection create failed: %08x, expected CLASS_E_NOAGGREGATION\n", hr);
    ok(!dmc, "dmc = %p\n", dmc);

    /* Invalid RIID */
    hr = CoCreateInstance(&CLSID_DirectMusicCollection, NULL, CLSCTX_INPROC_SERVER,
            &IID_IClassFactory, (void**)&dmc);
    ok(hr == E_NOINTERFACE, "DirectMusicCollection create failed: %08x, expected E_NOINTERFACE\n", hr);

    /* Same refcount for all DirectMusicCollection interfaces */
    hr = CoCreateInstance(&CLSID_DirectMusicCollection, NULL, CLSCTX_INPROC_SERVER,
            &IID_IDirectMusicCollection, (void**)&dmc);
    ok(hr == S_OK, "DirectMusicCollection create failed: %08x, expected S_OK\n", hr);
    refcount = IDirectMusicCollection_AddRef(dmc);
    ok(refcount == 2, "refcount == %u, expected 2\n", refcount);

    hr = IDirectMusicCollection_QueryInterface(dmc, &IID_IDirectMusicObject, (void**)&dmo);
    ok(hr == S_OK, "QueryInterface for IID_IDirectMusicObject failed: %08x\n", hr);
    refcount = IDirectMusicObject_AddRef(dmo);
    ok(refcount == 4, "refcount == %u, expected 4\n", refcount);
    refcount = IDirectMusicObject_Release(dmo);

    hr = IDirectMusicCollection_QueryInterface(dmc, &IID_IPersistStream, (void**)&ps);
    ok(hr == S_OK, "QueryInterface for IID_IPersistStream failed: %08x\n", hr);
    refcount = IPersistStream_AddRef(ps);
    ok(refcount == 5, "refcount == %u, expected 5\n", refcount);
    refcount = IPersistStream_Release(ps);

    hr = IDirectMusicCollection_QueryInterface(dmc, &IID_IUnknown, (void**)&unk);
    ok(hr == S_OK, "QueryInterface for IID_IUnknown failed: %08x\n", hr);
    refcount = IUnknown_AddRef(unk);
    ok(refcount == 6, "refcount == %u, expected 6\n", refcount);
    refcount = IUnknown_Release(unk);

    ok(refcount == 5, "refcount == %u, expected 5\n", refcount);
    while (IDirectMusicCollection_Release(dmc));
}

static void test_dmcoll(void)
{
    IDirectMusicCollection *dmc;
    IDirectMusicObject *dmo;
    IPersistStream *ps;
    DMUS_OBJECTDESC desc;
    CLSID class;
    ULARGE_INTEGER size;
    HRESULT hr;

    hr = CoCreateInstance(&CLSID_DirectMusicCollection, NULL, CLSCTX_INPROC_SERVER,
            &IID_IDirectMusicCollection, (void**)&dmc);
    ok(hr == S_OK, "DirectMusicCollection create failed: %08x, expected S_OK\n", hr);

    /* IDirectMusicObject */
    hr = IDirectMusicCollection_QueryInterface(dmc, &IID_IDirectMusicObject, (void**)&dmo);
    ok(hr == S_OK, "QueryInterface for IID_IDirectMusicObject failed: %08x\n", hr);
    hr = IDirectMusicObject_GetDescriptor(dmo, NULL);
    ok(hr == E_POINTER, "IDirectMusicObject_GetDescriptor: expected E_POINTER, got  %08x\n", hr);
    hr = IDirectMusicObject_SetDescriptor(dmo, NULL);
    ok(hr == E_POINTER, "IDirectMusicObject_SetDescriptor: expected E_POINTER, got  %08x\n", hr);
    ZeroMemory(&desc, sizeof(desc));
    hr = IDirectMusicObject_GetDescriptor(dmo, &desc);
    ok(hr == S_OK, "IDirectMusicObject_GetDescriptor failed: %08x\n", hr);
    ok(desc.dwValidData == DMUS_OBJ_CLASS,
            "Fresh object has more valid data (%08x) than DMUS_OBJ_CLASS\n", desc.dwValidData);
    /* DMUS_OBJ_CLASS is immutable */
    desc.dwValidData = DMUS_OBJ_CLASS;
    hr = IDirectMusicObject_SetDescriptor(dmo, &desc);
    ok(hr == S_FALSE , "IDirectMusicObject_SetDescriptor failed: %08x\n", hr);
    ok(!desc.dwValidData, "dwValidData wasn't cleared:  %08x\n", desc.dwValidData);
    desc.dwValidData = DMUS_OBJ_CLASS;
    desc.guidClass = CLSID_DirectMusicSegment;
    hr = IDirectMusicObject_SetDescriptor(dmo, &desc);
    ok(hr == S_FALSE && !desc.dwValidData, "IDirectMusicObject_SetDescriptor failed: %08x\n", hr);
    hr = IDirectMusicObject_GetDescriptor(dmo, &desc);
    ok(hr == S_OK, "IDirectMusicObject_GetDescriptor failed: %08x\n", hr);
    ok(IsEqualGUID(&desc.guidClass, &CLSID_DirectMusicCollection),
            "guidClass changed, should be CLSID_DirectMusicCollection\n");

    /* Unimplemented IPersistStream methods*/
    hr = IDirectMusicCollection_QueryInterface(dmc, &IID_IPersistStream, (void**)&ps);
    ok(hr == S_OK, "QueryInterface for IID_IPersistStream failed: %08x\n", hr);
    hr = IPersistStream_GetClassID(ps, &class);
    ok(hr == E_NOTIMPL, "IPersistStream_GetClassID failed: %08x\n", hr);
    hr = IPersistStream_IsDirty(ps);
    ok(hr == S_FALSE, "IPersistStream_IsDirty failed: %08x\n", hr);
    hr = IPersistStream_GetSizeMax(ps, &size);
    ok(hr == E_NOTIMPL, "IPersistStream_GetSizeMax failed: %08x\n", hr);
    hr = IPersistStream_Save(ps, NULL, TRUE);
    ok(hr == E_NOTIMPL, "IPersistStream_Save failed: %08x\n", hr);

    while (IDirectMusicCollection_Release(dmc));
}

static BOOL missing_dmusic(void)
{
    IDirectMusic8 *dm;
    HRESULT hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic,
            (void**)&dm);

    if (hr == S_OK && dm)
    {
        IDirectMusic_Release(dm);
        return FALSE;
    }
    return TRUE;
}

static void test_COM_synthport(void)
{
    IDirectMusic *dmusic = NULL;
    IDirectMusicPort *port = NULL;
    IDirectMusicPortDownload *dmpd;
    IDirectMusicThru *dmt;
    IKsControl *iksc;
    IReferenceClock *clock;
    IUnknown *unk;
    DMUS_PORTPARAMS port_params;
    ULONG refcount;
    HRESULT hr;

    /* Create a IDirectMusicPort */
    hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic,
            (void**)&dmusic);
    ok(hr == S_OK, "Cannot create DirectMusic object (%x)\n", hr);
    port_params.dwSize = sizeof(port_params);
    port_params.dwValidParams = DMUS_PORTPARAMS_CHANNELGROUPS | DMUS_PORTPARAMS_AUDIOCHANNELS;
    port_params.dwChannelGroups = 1;
    port_params.dwAudioChannels = 2;
    hr = IDirectMusic_SetDirectSound(dmusic, NULL, NULL);
    ok(hr == S_OK, "IDirectMusic_SetDirectSound returned: %x\n", hr);
    hr = IDirectMusic_CreatePort(dmusic, &GUID_NULL, &port_params, &port, NULL);
    ok(hr == S_OK, "IDirectMusic_CreatePort returned: %x\n", hr);

    /* Same refcount for all DirectMusicPort interfaces */
    refcount = IDirectMusicPort_AddRef(port);
    ok(refcount == 2, "refcount == %u, expected 2\n", refcount);

    hr = IDirectMusicPort_QueryInterface(port, &IID_IDirectMusicPortDownload, (void**)&dmpd);
    ok(hr == S_OK, "QueryInterface for IID_IDirectMusicPortDownload failed: %08x\n", hr);
    refcount = IDirectMusicPortDownload_AddRef(dmpd);
    ok(refcount == 4, "refcount == %u, expected 4\n", refcount);
    IDirectMusicPortDownload_Release(dmpd);

    hr = IDirectMusicPort_QueryInterface(port, &IID_IKsControl, (void**)&iksc);
    ok(hr == S_OK, "QueryInterface for IID_IKsControl failed: %08x\n", hr);
    refcount = IKsControl_AddRef(iksc);
    ok(refcount == 5, "refcount == %u, expected 5\n", refcount);
    IKsControl_Release(iksc);

    hr = IDirectMusicPort_QueryInterface(port, &IID_IUnknown, (void**)&unk);
    ok(hr == S_OK, "QueryInterface for IID_IUnknown failed: %08x\n", hr);
    refcount = IUnknown_AddRef(unk);
    ok(refcount == 6, "refcount == %u, expected 6\n", refcount);
    IUnknown_Release(unk);

    /* Unsupported interface */
    hr = IDirectMusicPort_QueryInterface(port, &IID_IDirectMusicThru, (void**)&dmt);
    todo_wine ok(hr == E_NOINTERFACE, "QueryInterface for IID_IDirectMusicThru failed: %08x\n", hr);
    hr = IDirectMusicPort_QueryInterface(port, &IID_IReferenceClock, (void**)&clock);
    ok(hr == E_NOINTERFACE, "QueryInterface for IID_IReferenceClock failed: %08x\n", hr);

    while (IDirectMusicPort_Release(port));
}

START_TEST(dmusic)
{
    CoInitializeEx(NULL, COINIT_MULTITHREADED);

    if (missing_dmusic())
    {
        skip("DirectMusic not available\n");
        CoUninitialize();
        return;
    }
    test_COM();
    test_COM_dmcoll();
    test_COM_synthport();
    test_dmusic();
    test_setdsound();
    test_dmbuffer();
    test_dmcoll();

    CoUninitialize();
}