Hello Anton, thanks for the patch! I have a few comments inlined below:

On 2/24/20 12:03 PM, Anton Baskanov wrote:
> Signed-off-by: Anton Baskanov <baskanov@gmail.com>
> ---
>  dlls/amstream/audiostream.c    |   8 +-
>  dlls/amstream/tests/amstream.c | 336 +++++++++++++++++++++++++++++++++
>  2 files changed, 342 insertions(+), 2 deletions(-)
>
> diff --git a/dlls/amstream/audiostream.c b/dlls/amstream/audiostream.c
> index 2875e1f59b..8a16512dcd 100644
> --- a/dlls/amstream/audiostream.c
> +++ b/dlls/amstream/audiostream.c
> @@ -499,13 +499,17 @@ static HRESULT WINAPI
> audio_IAudioMediaStream_GetFormat(IAudioMediaStream *iface
>  {
>      struct audio_stream *This = impl_from_IAudioMediaStream(iface);
>
> -    FIXME("(%p/%p)->(%p) stub!\n", iface, This, wave_format_current);
> +    TRACE("(%p/%p)->(%p)\n", iface, This, wave_format_current);
>
>      if (!wave_format_current)
>          return E_POINTER;
>
> -    return MS_E_NOSTREAM;
> +    if (!This->peer)
> +        return MS_E_NOSTREAM;
>
> +    *wave_format_current = *(WAVEFORMATEX *)This->mt.pbFormat;
> +
> +    return S_OK;

I suspect this should be protected by the stream's critical section.

>  }
>
>  static HRESULT WINAPI
> audio_IAudioMediaStream_SetFormat(IAudioMediaStream *iface, const
> WAVEFORMATEX *wave_format)
> diff --git a/dlls/amstream/tests/amstream.c b/dlls/amstream/tests/amstream.c
> index 6497dde91c..1fb3cc239b 100644
> --- a/dlls/amstream/tests/amstream.c
> +++ b/dlls/amstream/tests/amstream.c
> @@ -2293,6 +2293,340 @@ out_unknown:
>      IUnknown_Release(unknown);
>  }
>
> +static LONG filter_ref_count = 1;
> +
> +static HRESULT WINAPI filter_QueryInterface(IBaseFilter *iface,
> REFIID riid, void **ret_iface)
> +{
> +    if (IsEqualGUID(&IID_IUnknown, riid) || IsEqualGUID(&IID_IPersist, riid) ||
> +        IsEqualGUID(&IID_IMediaFilter, riid) ||
> IsEqualGUID(&IID_IBaseFilter, riid))
> +    {
> +        *ret_iface = iface;
> +        IBaseFilter_AddRef(iface);
> +        return S_OK;
> +    }
> +    return E_NOINTERFACE;
> +}
> +
> +static ULONG WINAPI filter_AddRef(IBaseFilter *iface)
> +{
> +    return InterlockedIncrement(&filter_ref_count);
> +}
> +
> +static ULONG WINAPI filter_Release(IBaseFilter *iface)
> +{
> +    return InterlockedDecrement(&filter_ref_count);
> +}
> +
> +static HRESULT WINAPI filter_GetClassID(IBaseFilter *iface, CLSID *clsid)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_Stop(IBaseFilter *iface)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_Pause(IBaseFilter *iface)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_Run(IBaseFilter *iface, REFERENCE_TIME start)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_GetState(IBaseFilter *iface, DWORD
> timeout, FILTER_STATE *state)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_SetSyncSource(IBaseFilter *iface,
> IReferenceClock *clock)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_GetSyncSource(IBaseFilter *iface,
> IReferenceClock **clock)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_EnumPins(IBaseFilter *iface, IEnumPins
> **enum_pins)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_FindPin(IBaseFilter *iface, const WCHAR
> *id, IPin **out)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_QueryFilterInfo(IBaseFilter *iface,
> FILTER_INFO *info)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_JoinFilterGraph(IBaseFilter *iface,
> +        IFilterGraph *graph, const WCHAR *name)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI filter_QueryVendorInfo(IBaseFilter *iface,
> LPWSTR *vendor_info)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static const IBaseFilterVtbl filter_vtbl =
> +{
> +    filter_QueryInterface,
> +    filter_AddRef,
> +    filter_Release,
> +    filter_GetClassID,
> +    filter_Stop,
> +    filter_Pause,
> +    filter_Run,
> +    filter_GetState,
> +    filter_SetSyncSource,
> +    filter_GetSyncSource,
> +    filter_EnumPins,
> +    filter_FindPin,
> +    filter_QueryFilterInfo,
> +    filter_JoinFilterGraph,
> +    filter_QueryVendorInfo,
> +};
> +
> +static IBaseFilter filter = {&filter_vtbl};
> +
> +static LONG output_pin_ref_count = 1;
> +
> +static HRESULT WINAPI output_pin_QueryInterface(IPin *iface, REFIID
> iid, void **out)
> +{
> +    if (IsEqualGUID(&IID_IUnknown, iid) || IsEqualGUID(&IID_IPin, iid))
> +    {
> +        *out = iface;
> +        IPin_AddRef(iface);
> +        return S_OK;
> +    }
> +    return E_NOINTERFACE;
> +}
> +
> +static ULONG WINAPI output_pin_AddRef(IPin *iface)
> +{
> +    return InterlockedIncrement(&output_pin_ref_count);
> +}
> +
> +static ULONG WINAPI output_pin_Release(IPin *iface)
> +{
> +    return InterlockedDecrement(&output_pin_ref_count);
> +}
> +
> +static HRESULT WINAPI output_pin_Connect(IPin *iface, IPin *peer,
> const AM_MEDIA_TYPE *mt)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_ReceiveConnection(IPin *iface, IPin
> *peer, const AM_MEDIA_TYPE *mt)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_Disconnect(IPin *iface)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_ConnectedTo(IPin *iface, IPin **peer)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_ConnectionMediaType(IPin *iface,
> AM_MEDIA_TYPE *mt)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_QueryPinInfo(IPin *iface, PIN_INFO *info)
> +{
> +    if (winetest_debug > 1) trace("QueryPinInfo\n");
> +    info->pFilter = &filter;
> +    info->dir = PINDIR_OUTPUT;
> +    lstrcpyW(info->achName, L"output");
> +    IBaseFilter_AddRef(info->pFilter);
> +    return S_OK;
> +}
> +
> +static HRESULT WINAPI output_pin_QueryDirection(IPin *iface,
> PIN_DIRECTION *dir)
> +{
> +    if (winetest_debug > 1) trace("QueryDirection\n");
> +    *dir = PINDIR_OUTPUT;
> +    return S_OK;
> +}
> +
> +static HRESULT WINAPI output_pin_QueryId(IPin *iface, WCHAR **id)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_QueryAccept(IPin *iface, const
> AM_MEDIA_TYPE *mt)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_EnumMediaTypes(IPin *iface,
> IEnumMediaTypes **out)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_QueryInternalConnections(IPin
> *iface, IPin **pins, ULONG *count)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_EndOfStream(IPin *iface)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_BeginFlush(IPin *iface)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_EndFlush(IPin *iface)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static HRESULT WINAPI output_pin_NewSegment(IPin *iface,
> REFERENCE_TIME start, REFERENCE_TIME stop, double rate)
> +{
> +    ok(0, "Unexpected call.\n");
> +    return E_NOTIMPL;
> +}
> +
> +static const IPinVtbl output_pin_vtbl =
> +{
> +    output_pin_QueryInterface,
> +    output_pin_AddRef,
> +    output_pin_Release,
> +    output_pin_Connect,
> +    output_pin_ReceiveConnection,
> +    output_pin_Disconnect,
> +    output_pin_ConnectedTo,
> +    output_pin_ConnectionMediaType,
> +    output_pin_QueryPinInfo,
> +    output_pin_QueryDirection,
> +    output_pin_QueryId,
> +    output_pin_QueryAccept,
> +    output_pin_EnumMediaTypes,
> +    output_pin_QueryInternalConnections,
> +    output_pin_EndOfStream,
> +    output_pin_BeginFlush,
> +    output_pin_EndFlush,
> +    output_pin_NewSegment,
> +};
> +
> +static IPin output_pin = {&output_pin_vtbl};

I would suggest using strmbase for this instead of manually implementing
the source pin and filter, similar to how it's done in the quartz
renderer tests.

> +
> +static void test_audiostream_get_format(void)
> +{
> +    IAMMultiMediaStream *mmstream = create_ammultimediastream();
> +    IMediaStream *stream = NULL;
> +    IAudioMediaStream *audio_stream = NULL;
> +    IPin *pin = NULL;
> +    WAVEFORMATEX stream_format = {0};
> +    WAVEFORMATEX media_type_format = {0};
> +    AM_MEDIA_TYPE media_type = {0};
> +    HRESULT hr;
> +
> +    hr = IAMMultiMediaStream_AddMediaStream(mmstream, NULL,
> &MSPID_PrimaryAudio, 0, &stream);
> +    ok(hr == S_OK, "Got hr %#x.\n", hr);
> +    hr = IMediaStream_QueryInterface(stream, &IID_IAudioMediaStream,
> (void **)&audio_stream);
> +    ok(hr == S_OK, "Got hr %#x.\n", hr);
> +    hr = IMediaStream_QueryInterface(stream, &IID_IPin, (void **)&pin);
> +    ok(hr == S_OK, "Got hr %#x.\n", hr);
> +
> +    hr = IAudioMediaStream_GetFormat(audio_stream, NULL);
> +    ok(hr == E_POINTER, "Got hr %#x.\n", hr);
> +
> +    hr = IAudioMediaStream_GetFormat(audio_stream, &stream_format);
> +    ok(hr == MS_E_NOSTREAM, "Got hr %#x.\n", hr);
> +
> +    media_type_format.wFormatTag = WAVE_FORMAT_PCM;
> +    media_type_format.nChannels = 2;
> +    media_type_format.nSamplesPerSec = 44100;
> +    media_type_format.nAvgBytesPerSec = 176400;
> +    media_type_format.nBlockAlign = 4;
> +    media_type_format.wBitsPerSample = 16;
> +    media_type_format.cbSize = 0;
> +
> +    media_type.majortype = MEDIATYPE_Audio;
> +    media_type.subtype = MEDIASUBTYPE_PCM;
> +    media_type.bFixedSizeSamples = TRUE;
> +    media_type.bTemporalCompression = FALSE;
> +    media_type.lSampleSize = 2;
> +    media_type.formattype = FORMAT_WaveFormatEx;
> +    media_type.pUnk = NULL;
> +    media_type.cbFormat = sizeof(media_type_format);
> +    media_type.pbFormat = (BYTE *)&media_type_format;
> +
> +    hr = IPin_ReceiveConnection(pin, &output_pin, &media_type);
> +    ok(hr == S_OK, "Got hr %#x.\n", hr);

And similarly, this should use IFilterGraph2::ConnectDirect() with the
multimedia stream's filter graph, unless there's a good reason not to.

> +
> +    stream_format.wFormatTag = 0xdead;
> +    stream_format.nChannels = 0xdead;
> +    stream_format.nSamplesPerSec = 0xdeadbeef;
> +    stream_format.nAvgBytesPerSec = 0xdeadbeef;
> +    stream_format.nBlockAlign = 0xdead;
> +    stream_format.wBitsPerSample = 0xdead;
> +    stream_format.cbSize = 0xdead;

memset(&stream_format, 0xcc, sizeof(stream_format)) would probably be
easier.

> +    hr = IAudioMediaStream_GetFormat(audio_stream, &stream_format);
> +    ok(hr == S_OK, "Got hr %#x.\n", hr);
> +    ok(WAVE_FORMAT_PCM == stream_format.wFormatTag, "got %u\n",
> stream_format.wFormatTag);
> +    ok(2 == stream_format.nChannels, "got %u\n", stream_format.nChannels);
> +    ok(44100 == stream_format.nSamplesPerSec, "got %u\n",
> stream_format.nSamplesPerSec);
> +    ok(176400 == stream_format.nAvgBytesPerSec, "got %u\n",
> stream_format.nAvgBytesPerSec);
> +    ok(4 == stream_format.nBlockAlign, "got %u\n", stream_format.nBlockAlign);
> +    ok(16 == stream_format.wBitsPerSample, "got %u\n",
> stream_format.wBitsPerSample);
> +    ok(0 == stream_format.cbSize, "got %u\n", stream_format.cbSize);

It's my stylistic preference (mostly borrowed from d3d) to put the
constant on the right, and capitalize and punctuate trace messages.
Adding a description (e.g. "Got alignment %u.") would probably also be
appreciated.

> +
> +    hr = IPin_Disconnect(pin);
> +    ok(hr == S_OK, "Got hr %#x.\n", hr);
> +
> +    hr = IAudioMediaStream_GetFormat(audio_stream, &stream_format);
> +    ok(hr == MS_E_NOSTREAM, "Got hr %#x.\n", hr);
> +
> +    IPin_Release(pin);
> +    IAudioMediaStream_Release(audio_stream);
> +    IMediaStream_Release(stream);
> +    IAMMultiMediaStream_Release(mmstream);

Can you please check that all references are released, as is done elsewhere?

> +}
> +
>  START_TEST(amstream)
>  {
>      HANDLE file;
> @@ -2326,5 +2660,7 @@ START_TEST(amstream)
>      test_audiodata_get_format();
>      test_audiodata_set_format();
>
> +    test_audiostream_get_format();
> +
>      CoUninitialize();
>  }
> --
> 2.17.1
>