Sweden-Number/dlls/quartz/tests/mpegaudio.c

/*
 * MPEG audio decoder filter unit tests
 *
 * Copyright 2022 Anton Baskanov
 * Copyright 2018 Zebediah Figura
 *
 * 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 "dshow.h"
#include "mmreg.h"
#include "wine/test.h"

static const MPEG1WAVEFORMAT mp1_format =
{
    .wfx.wFormatTag = WAVE_FORMAT_MPEG,
    .wfx.nChannels = 1,
    .wfx.nSamplesPerSec = 32000,
    .wfx.nBlockAlign = 48,
    .wfx.nAvgBytesPerSec = 4000,
    .wfx.cbSize = sizeof(MPEG1WAVEFORMAT) - sizeof(WAVEFORMATEX),
    .fwHeadLayer = ACM_MPEG_LAYER1,
    .dwHeadBitrate = 32000,
    .fwHeadMode = ACM_MPEG_SINGLECHANNEL,
    .fwHeadFlags = ACM_MPEG_ID_MPEG1,
};

static const AM_MEDIA_TYPE mp1_mt =
{
    /* MEDIATYPE_Audio, MEDIASUBTYPE_MPEG1AudioPayload, FORMAT_WaveFormatEx */
    .majortype = {0x73647561, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .subtype = {0x00000050, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .bFixedSizeSamples = TRUE,
    .lSampleSize = 1,
    .formattype = {0x05589f81, 0xc356, 0x11ce, {0xbf, 0x01, 0x00, 0xaa, 0x00, 0x55, 0x59, 0x5a}},
    .cbFormat = sizeof(MPEG1WAVEFORMAT),
    .pbFormat = (BYTE *)&mp1_format,
};

static const MPEG1WAVEFORMAT mp2_format =
{
    .wfx.wFormatTag = WAVE_FORMAT_MPEG,
    .wfx.nChannels = 1,
    .wfx.nSamplesPerSec = 32000,
    .wfx.nBlockAlign = 144,
    .wfx.nAvgBytesPerSec = 4000,
    .wfx.cbSize = sizeof(MPEG1WAVEFORMAT) - sizeof(WAVEFORMATEX),
    .fwHeadLayer = ACM_MPEG_LAYER2,
    .dwHeadBitrate = 32000,
    .fwHeadMode = ACM_MPEG_SINGLECHANNEL,
    .fwHeadFlags = ACM_MPEG_ID_MPEG1,
};

static const AM_MEDIA_TYPE mp2_mt =
{
    /* MEDIATYPE_Audio, MEDIASUBTYPE_MPEG1AudioPayload, FORMAT_WaveFormatEx */
    .majortype = {0x73647561, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .subtype = {0x00000050, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .bFixedSizeSamples = TRUE,
    .lSampleSize = 1,
    .formattype = {0x05589f81, 0xc356, 0x11ce, {0xbf, 0x01, 0x00, 0xaa, 0x00, 0x55, 0x59, 0x5a}},
    .cbFormat = sizeof(MPEG1WAVEFORMAT),
    .pbFormat = (BYTE *)&mp2_format,
};

static const MPEG1WAVEFORMAT mp3_format0 =
{
    .wfx.wFormatTag = WAVE_FORMAT_MPEG,
    .wfx.nChannels = 1,
    .wfx.nSamplesPerSec = 32000,
    .wfx.nBlockAlign = 144,
    .wfx.nAvgBytesPerSec = 4000,
    .wfx.cbSize = sizeof(MPEG1WAVEFORMAT) - sizeof(WAVEFORMATEX),
    .fwHeadLayer = ACM_MPEG_LAYER3,
    .dwHeadBitrate = 32000,
    .fwHeadMode = ACM_MPEG_SINGLECHANNEL,
    .fwHeadFlags = ACM_MPEG_ID_MPEG1,
};

static const AM_MEDIA_TYPE mp3_mt0 =
{
    /* MEDIATYPE_Audio, MEDIASUBTYPE_MPEG1AudioPayload, FORMAT_WaveFormatEx */
    .majortype = {0x73647561, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .subtype = {0x00000050, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .bFixedSizeSamples = TRUE,
    .lSampleSize = 1,
    .formattype = {0x05589f81, 0xc356, 0x11ce, {0xbf, 0x01, 0x00, 0xaa, 0x00, 0x55, 0x59, 0x5a}},
    .cbFormat = sizeof(MPEG1WAVEFORMAT),
    .pbFormat = (BYTE *)&mp3_format0,
};

static const MPEGLAYER3WAVEFORMAT mp3_format1 =
{
    .wfx.wFormatTag = WAVE_FORMAT_MPEGLAYER3,
    .wfx.nChannels = 1,
    .wfx.nSamplesPerSec = 32000,
    .wfx.nBlockAlign = 144,
    .wfx.nAvgBytesPerSec = 4000,
    .wfx.cbSize = sizeof(MPEGLAYER3WAVEFORMAT) - sizeof(WAVEFORMATEX),
    .wID = MPEGLAYER3_ID_MPEG,
    .nBlockSize = 144,
    .nFramesPerBlock = 1,
};

static const AM_MEDIA_TYPE mp3_mt1 =
{
    /* MEDIATYPE_Audio, MEDIASUBTYPE_MPEG1AudioPayload, FORMAT_WaveFormatEx */
    .majortype = {0x73647561, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .subtype = {0x00000050, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .bFixedSizeSamples = TRUE,
    .lSampleSize = 1,
    .formattype = {0x05589f81, 0xc356, 0x11ce, {0xbf, 0x01, 0x00, 0xaa, 0x00, 0x55, 0x59, 0x5a}},
    .cbFormat = sizeof(MPEGLAYER3WAVEFORMAT),
    .pbFormat = (BYTE *)&mp3_format1,
};

static const WAVEFORMATEX pcm16_format =
{
    .wFormatTag = WAVE_FORMAT_PCM,
    .nChannels = 1,
    .nSamplesPerSec = 32000,
    .wBitsPerSample = 16,
    .nBlockAlign = 2,
    .nAvgBytesPerSec = 64000,
};

static const AM_MEDIA_TYPE pcm16_mt =
{
    /* MEDIATYPE_Audio, MEDIASUBTYPE_PCM, FORMAT_WaveFormatEx */
    .majortype = {0x73647561, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .subtype = {0x00000001, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}},
    .bFixedSizeSamples = TRUE,
    .lSampleSize = 2,
    .formattype = {0x05589f81, 0xc356, 0x11ce, {0xbf, 0x01, 0x00, 0xaa, 0x00, 0x55, 0x59, 0x5a}},
    .cbFormat = sizeof(WAVEFORMATEX),
    .pbFormat = (BYTE *)&pcm16_format,
};

static IBaseFilter *create_mpeg_audio_codec(void)
{
    IBaseFilter *filter = NULL;
    HRESULT hr = CoCreateInstance(&CLSID_CMpegAudioCodec, NULL, CLSCTX_INPROC_SERVER,
            &IID_IBaseFilter, (void **)&filter);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    return filter;
}

static ULONG get_refcount(void *iface)
{
    IUnknown *unknown = iface;
    IUnknown_AddRef(unknown);
    return IUnknown_Release(unknown);
}

#define check_interface(a, b, c) check_interface_(__LINE__, a, b, c)
static void check_interface_(unsigned int line, void *iface_ptr, REFIID iid, BOOL supported)
{
    IUnknown *iface = iface_ptr;
    HRESULT hr, expected_hr;
    IUnknown *unk;

    expected_hr = supported ? S_OK : E_NOINTERFACE;

    hr = IUnknown_QueryInterface(iface, iid, (void **)&unk);
    ok_(__FILE__, line)(hr == expected_hr, "Got hr %#lx, expected %#lx.\n", hr, expected_hr);
    if (SUCCEEDED(hr))
        IUnknown_Release(unk);
}

static void test_interfaces(void)
{
    IBaseFilter *filter;
    IPin *pin;

    filter = create_mpeg_audio_codec();
    if (!filter)
    {
        skip("Failed to create MPEG audio decoder instance, skipping tests.\n");
        return;
    }

    check_interface(filter, &IID_IBaseFilter, TRUE);
    check_interface(filter, &IID_IMediaFilter, TRUE);
    check_interface(filter, &IID_IPersist, TRUE);
    check_interface(filter, &IID_IUnknown, TRUE);

    check_interface(filter, &IID_IAMFilterMiscFlags, FALSE);
    check_interface(filter, &IID_IBasicAudio, FALSE);
    check_interface(filter, &IID_IBasicVideo, FALSE);
    check_interface(filter, &IID_IKsPropertySet, FALSE);
    check_interface(filter, &IID_IMediaPosition, FALSE);
    check_interface(filter, &IID_IMediaSeeking, FALSE);
    check_interface(filter, &IID_IPin, FALSE);
    check_interface(filter, &IID_IQualityControl, FALSE);
    check_interface(filter, &IID_IQualProp, FALSE);
    check_interface(filter, &IID_IReferenceClock, FALSE);
    check_interface(filter, &IID_IVideoWindow, FALSE);
    check_interface(filter, &IID_IPersistPropertyBag, FALSE);

    IBaseFilter_FindPin(filter, L"In", &pin);

    check_interface(pin, &IID_IMemInputPin, TRUE);
    check_interface(pin, &IID_IPin, TRUE);
    todo_wine check_interface(pin, &IID_IQualityControl, TRUE);
    check_interface(pin, &IID_IUnknown, TRUE);

    check_interface(pin, &IID_IMediaPosition, FALSE);
    check_interface(pin, &IID_IMediaSeeking, FALSE);

    IPin_Release(pin);

    IBaseFilter_FindPin(filter, L"Out", &pin);

    check_interface(pin, &IID_IPin, TRUE);
    todo_wine check_interface(pin, &IID_IMediaPosition, TRUE);
    todo_wine check_interface(pin, &IID_IMediaSeeking, TRUE);
    todo_wine check_interface(pin, &IID_IQualityControl, TRUE);
    check_interface(pin, &IID_IUnknown, TRUE);

    check_interface(pin, &IID_IAsyncReader, FALSE);

    IPin_Release(pin);

    IBaseFilter_Release(filter);
}

static const GUID test_iid = {0x33333333};
static LONG outer_ref = 1;

static HRESULT WINAPI outer_QueryInterface(IUnknown *iface, REFIID iid, void **out)
{
    if (IsEqualGUID(iid, &IID_IUnknown)
            || IsEqualGUID(iid, &IID_IBaseFilter)
            || IsEqualGUID(iid, &test_iid))
    {
        *out = (IUnknown *)0xdeadbeef;
        return S_OK;
    }
    ok(0, "unexpected call %s\n", wine_dbgstr_guid(iid));
    return E_NOINTERFACE;
}

static ULONG WINAPI outer_AddRef(IUnknown *iface)
{
    return InterlockedIncrement(&outer_ref);
}

static ULONG WINAPI outer_Release(IUnknown *iface)
{
    return InterlockedDecrement(&outer_ref);
}

static const IUnknownVtbl outer_vtbl =
{
    outer_QueryInterface,
    outer_AddRef,
    outer_Release,
};

static IUnknown test_outer = {&outer_vtbl};

static void test_aggregation(void)
{
    IBaseFilter *filter, *filter2;
    IUnknown *unk, *unk2;
    HRESULT hr;
    ULONG ref;

    filter = (IBaseFilter *)0xdeadbeef;
    hr = CoCreateInstance(&CLSID_CMpegAudioCodec, &test_outer, CLSCTX_INPROC_SERVER,
            &IID_IBaseFilter, (void **)&filter);
    ok(hr == E_NOINTERFACE, "Got hr %#lx.\n", hr);
    ok(!filter, "Got interface %p.\n", filter);

    hr = CoCreateInstance(&CLSID_CMpegAudioCodec, &test_outer, CLSCTX_INPROC_SERVER,
            &IID_IUnknown, (void **)&unk);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    if (FAILED(hr))
    {
        skip("Failed to create MPEG audio decoder instance, skipping tests.\n");
        return;
    }
    ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);
    ok(unk != &test_outer, "Returned IUnknown should not be outer IUnknown.\n");
    ref = get_refcount(unk);
    ok(ref == 1, "Got unexpected refcount %ld.\n", ref);

    ref = IUnknown_AddRef(unk);
    ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
    ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);

    ref = IUnknown_Release(unk);
    ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
    ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);

    hr = IUnknown_QueryInterface(unk, &IID_IUnknown, (void **)&unk2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(unk2 == unk, "Got unexpected IUnknown %p.\n", unk2);
    IUnknown_Release(unk2);

    hr = IUnknown_QueryInterface(unk, &IID_IBaseFilter, (void **)&filter);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_QueryInterface(filter, &IID_IUnknown, (void **)&unk2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(unk2 == (IUnknown *)0xdeadbeef, "Got unexpected IUnknown %p.\n", unk2);

    hr = IBaseFilter_QueryInterface(filter, &IID_IBaseFilter, (void **)&filter2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(filter2 == (IBaseFilter *)0xdeadbeef, "Got unexpected IBaseFilter %p.\n", filter2);

    hr = IUnknown_QueryInterface(unk, &test_iid, (void **)&unk2);
    ok(hr == E_NOINTERFACE, "Got hr %#lx.\n", hr);
    ok(!unk2, "Got unexpected IUnknown %p.\n", unk2);

    hr = IBaseFilter_QueryInterface(filter, &test_iid, (void **)&unk2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(unk2 == (IUnknown *)0xdeadbeef, "Got unexpected IUnknown %p.\n", unk2);

    IBaseFilter_Release(filter);
    ref = IUnknown_Release(unk);
    ok(!ref, "Got unexpected refcount %ld.\n", ref);
    ok(outer_ref == 1, "Got unexpected refcount %ld.\n", outer_ref);
}

static void test_unconnected_filter_state(void)
{
    IBaseFilter *filter;
    FILTER_STATE state;
    HRESULT hr;
    ULONG ref;

    filter = create_mpeg_audio_codec();
    if (!filter)
    {
        skip("Failed to create MPEG audio decoder instance, skipping tests.\n");
        return;
    }

    hr = IBaseFilter_GetState(filter, 0, &state);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(state == State_Stopped, "Got state %u.\n", state);

    hr = IBaseFilter_Pause(filter);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_GetState(filter, 0, &state);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(state == State_Paused, "Got state %u.\n", state);

    hr = IBaseFilter_Run(filter, 0);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_GetState(filter, 0, &state);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(state == State_Running, "Got state %u.\n", state);

    hr = IBaseFilter_Pause(filter);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_GetState(filter, 0, &state);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(state == State_Paused, "Got state %u.\n", state);

    hr = IBaseFilter_Stop(filter);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_GetState(filter, 0, &state);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(state == State_Stopped, "Got state %u.\n", state);

    hr = IBaseFilter_Run(filter, 0);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_GetState(filter, 0, &state);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(state == State_Running, "Got state %u.\n", state);

    hr = IBaseFilter_Stop(filter);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_GetState(filter, 0, &state);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(state == State_Stopped, "Got state %u.\n", state);

    ref = IBaseFilter_Release(filter);
    ok(!ref, "Got outstanding refcount %ld.\n", ref);
}

static void test_enum_pins(void)
{
    IBaseFilter *filter;
    IEnumPins *enum1, *enum2;
    ULONG count, ref;
    IPin *pins[3];
    HRESULT hr;

    filter = create_mpeg_audio_codec();
    if (!filter)
    {
        skip("Failed to create MPEG audio decoder instance, skipping tests.\n");
        return;
    }

    ref = get_refcount(filter);
    ok(ref == 1, "Got unexpected refcount %ld.\n", ref);

    hr = IBaseFilter_EnumPins(filter, NULL);
    ok(hr == E_POINTER, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_EnumPins(filter, &enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ref = get_refcount(filter);
    ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
    ref = get_refcount(enum1);
    ok(ref == 1, "Got unexpected refcount %ld.\n", ref);

    hr = IEnumPins_Next(enum1, 1, NULL, NULL);
    ok(hr == E_POINTER, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Next(enum1, 1, pins, NULL);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ref = get_refcount(filter);
    ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
    ref = get_refcount(pins[0]);
    ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
    ref = get_refcount(enum1);
    ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
    IPin_Release(pins[0]);
    ref = get_refcount(filter);
    ok(ref == 2, "Got unexpected refcount %ld.\n", ref);

    hr = IEnumPins_Next(enum1, 1, pins, NULL);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ref = get_refcount(filter);
    ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
    ref = get_refcount(pins[0]);
    ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
    ref = get_refcount(enum1);
    ok(ref == 1, "Got unexpected refcount %ld.\n", ref);
    IPin_Release(pins[0]);
    ref = get_refcount(filter);
    ok(ref == 2, "Got unexpected refcount %ld.\n", ref);

    hr = IEnumPins_Next(enum1, 1, pins, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Reset(enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Next(enum1, 1, pins, &count);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(count == 1, "Got count %lu.\n", count);
    IPin_Release(pins[0]);

    hr = IEnumPins_Next(enum1, 1, pins, &count);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(count == 1, "Got count %lu.\n", count);
    IPin_Release(pins[0]);

    hr = IEnumPins_Next(enum1, 1, pins, &count);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
    ok(!count, "Got count %lu.\n", count);

    hr = IEnumPins_Reset(enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Next(enum1, 2, pins, NULL);
    ok(hr == E_INVALIDARG, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Next(enum1, 2, pins, &count);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(count == 2, "Got count %lu.\n", count);
    IPin_Release(pins[0]);
    IPin_Release(pins[1]);

    hr = IEnumPins_Next(enum1, 2, pins, &count);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
    ok(!count, "Got count %lu.\n", count);

    hr = IEnumPins_Reset(enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Next(enum1, 3, pins, &count);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
    ok(count == 2, "Got count %lu.\n", count);
    IPin_Release(pins[0]);
    IPin_Release(pins[1]);

    hr = IEnumPins_Reset(enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Clone(enum1, &enum2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Skip(enum1, 3);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Skip(enum1, 2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Skip(enum1, 1);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Next(enum1, 1, pins, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumPins_Next(enum2, 1, pins, NULL);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    IPin_Release(pins[0]);

    IEnumPins_Release(enum2);
    IEnumPins_Release(enum1);
    ref = IBaseFilter_Release(filter);
    ok(!ref, "Got outstanding refcount %ld.\n", ref);
}

static void test_find_pin(void)
{
    IBaseFilter *filter;
    IEnumPins *enum_pins;
    IPin *pin, *pin2;
    HRESULT hr;
    ULONG ref;

    filter = create_mpeg_audio_codec();
    if (!filter)
    {
        skip("Failed to create MPEG audio decoder instance, skipping tests.\n");
        return;
    }

    hr = IBaseFilter_EnumPins(filter, &enum_pins);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IBaseFilter_FindPin(filter, L"In", &pin);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IEnumPins_Next(enum_pins, 1, &pin2, NULL);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(pin == pin2, "Pins didn't match.\n");
    IPin_Release(pin);
    IPin_Release(pin2);

    hr = IBaseFilter_FindPin(filter, L"Out", &pin);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IEnumPins_Next(enum_pins, 1, &pin2, NULL);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(pin == pin2, "Pins didn't match.\n");
    IPin_Release(pin);
    IPin_Release(pin2);

    hr = IBaseFilter_FindPin(filter, L"XForm In", &pin);
    ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);
    hr = IBaseFilter_FindPin(filter, L"XForm Out", &pin);
    ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);
    hr = IBaseFilter_FindPin(filter, L"input pin", &pin);
    ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);
    hr = IBaseFilter_FindPin(filter, L"output pin", &pin);
    ok(hr == VFW_E_NOT_FOUND, "Got hr %#lx.\n", hr);

    IEnumPins_Release(enum_pins);
    ref = IBaseFilter_Release(filter);
    ok(!ref, "Got outstanding refcount %ld.\n", ref);
}

static void test_pin_info(void)
{
    IBaseFilter *filter;
    PIN_DIRECTION dir;
    PIN_INFO info;
    HRESULT hr;
    WCHAR *id;
    ULONG ref;
    IPin *pin;

    filter = create_mpeg_audio_codec();
    if (!filter)
    {
        skip("Failed to create MPEG audio decoder instance, skipping tests.\n");
        return;
    }

    hr = IBaseFilter_FindPin(filter, L"In", &pin);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ref = get_refcount(filter);
    ok(ref == 2, "Got unexpected refcount %ld.\n", ref);
    ref = get_refcount(pin);
    ok(ref == 2, "Got unexpected refcount %ld.\n", ref);

    hr = IPin_QueryPinInfo(pin, &info);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(info.pFilter == filter, "Expected filter %p, got %p.\n", filter, info.pFilter);
    ok(info.dir == PINDIR_INPUT, "Got direction %d.\n", info.dir);
    ok(!wcscmp(info.achName, L"XForm In"), "Got name %s.\n", debugstr_w(info.achName));
    ref = get_refcount(filter);
    ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
    ref = get_refcount(pin);
    ok(ref == 3, "Got unexpected refcount %ld.\n", ref);
    IBaseFilter_Release(info.pFilter);

    hr = IPin_QueryDirection(pin, &dir);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(dir == PINDIR_INPUT, "Got direction %d.\n", dir);

    hr = IPin_QueryId(pin, &id);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(!wcscmp(id, L"In"), "Got id %s.\n", wine_dbgstr_w(id));
    CoTaskMemFree(id);

    hr = IPin_QueryInternalConnections(pin, NULL, NULL);
    ok(hr == E_NOTIMPL, "Got hr %#lx.\n", hr);

    IPin_Release(pin);

    hr = IBaseFilter_FindPin(filter, L"Out", &pin);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    hr = IPin_QueryPinInfo(pin, &info);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(info.pFilter == filter, "Expected filter %p, got %p.\n", filter, info.pFilter);
    ok(info.dir == PINDIR_OUTPUT, "Got direction %d.\n", info.dir);
    ok(!wcscmp(info.achName, L"XForm Out"), "Got name %s.\n", debugstr_w(info.achName));
    IBaseFilter_Release(info.pFilter);

    hr = IPin_QueryDirection(pin, &dir);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(dir == PINDIR_OUTPUT, "Got direction %d.\n", dir);

    hr = IPin_QueryId(pin, &id);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);
    ok(!wcscmp(id, L"Out"), "Got id %s.\n", wine_dbgstr_w(id));
    CoTaskMemFree(id);

    hr = IPin_QueryInternalConnections(pin, NULL, NULL);
    ok(hr == E_NOTIMPL, "Got hr %#lx.\n", hr);

    IPin_Release(pin);

    ref = IBaseFilter_Release(filter);
    ok(!ref, "Got outstanding refcount %ld.\n", ref);
}

static void test_enum_media_types(void)
{
    IBaseFilter *filter = create_mpeg_audio_codec();
    IEnumMediaTypes *enum1, *enum2;
    AM_MEDIA_TYPE *mts[1];
    ULONG ref, count;
    HRESULT hr;
    IPin *pin;

    IBaseFilter_FindPin(filter, L"In", &pin);

    hr = IPin_EnumMediaTypes(pin, &enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum1, 1, mts, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum1, 1, mts, &count);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
    ok(!count, "Got count %lu.\n", count);

    hr = IEnumMediaTypes_Reset(enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum1, 1, mts, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Clone(enum1, &enum2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Skip(enum1, 1);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum2, 1, mts, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    IEnumMediaTypes_Release(enum1);
    IEnumMediaTypes_Release(enum2);
    IPin_Release(pin);

    IBaseFilter_FindPin(filter, L"Out", &pin);

    hr = IPin_EnumMediaTypes(pin, &enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum1, 1, mts, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum1, 1, mts, &count);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);
    ok(!count, "Got count %lu.\n", count);

    hr = IEnumMediaTypes_Reset(enum1);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum1, 1, mts, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Clone(enum1, &enum2);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Skip(enum1, 1);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IEnumMediaTypes_Next(enum2, 1, mts, NULL);
    ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    IEnumMediaTypes_Release(enum1);
    IEnumMediaTypes_Release(enum2);
    IPin_Release(pin);

    ref = IBaseFilter_Release(filter);
    ok(!ref, "Got outstanding refcount %ld.\n", ref);
}

static void test_media_types(void)
{
    IBaseFilter *filter = create_mpeg_audio_codec();
    AM_MEDIA_TYPE mt;
    HRESULT hr;
    ULONG ref;
    IPin *pin;

    IBaseFilter_FindPin(filter, L"In", &pin);

    hr = IPin_QueryAccept(pin, &mp1_mt);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IPin_QueryAccept(pin, &mp2_mt);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    mt = mp2_mt;
    mt.subtype = MEDIASUBTYPE_MPEG1Packet;
    hr = IPin_QueryAccept(pin, &mp2_mt);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    mt = mp2_mt;
    mt.subtype = MEDIASUBTYPE_MPEG1Payload;
    hr = IPin_QueryAccept(pin, &mp2_mt);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    mt = mp2_mt;
    mt.subtype = GUID_NULL;
    hr = IPin_QueryAccept(pin, &mt);
    ok(hr == S_OK, "Got hr %#lx.\n", hr);

    hr = IPin_QueryAccept(pin, &mp3_mt0);
    todo_wine ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    hr = IPin_QueryAccept(pin, &mp3_mt1);
    todo_wine ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    mt = mp2_mt;
    mt.majortype = GUID_NULL;
    hr = IPin_QueryAccept(pin, &mt);
    todo_wine ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    mt = mp2_mt;
    mt.subtype = MEDIASUBTYPE_PCM;
    hr = IPin_QueryAccept(pin, &mt);
    todo_wine ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    mt = mp2_mt;
    mt.formattype = GUID_NULL;
    hr = IPin_QueryAccept(pin, &mt);
    todo_wine ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    IPin_Release(pin);

    IBaseFilter_FindPin(filter, L"Out", &pin);

    hr = IPin_QueryAccept(pin, &pcm16_mt);
    todo_wine ok(hr == S_FALSE, "Got hr %#lx.\n", hr);

    IPin_Release(pin);

    ref = IBaseFilter_Release(filter);
    ok(!ref, "Got outstanding refcount %ld.\n", ref);
}

START_TEST(mpegaudio)
{
    CoInitialize(NULL);

    test_interfaces();
    test_aggregation();
    test_unconnected_filter_state();
    test_enum_pins();
    test_find_pin();
    test_pin_info();
    test_enum_media_types();
    test_media_types();

    CoUninitialize();
}