H.264 uses a 16-pixel alignment, and the stream sink media type should have the aligned height after the session has started.
-- v13: mf/tests: Test H.264 decoder alignment. mf/tests: Test H.264 sink media type height alignment.
From: Conor McCarthy cmccarthy@codeweavers.com
H.264 uses a 16-pixel alignment, and the stream sink media type should have the aligned height after the session has started. --- dlls/mf/tests/mf.c | 203 +++++++++++++++++++++++++++++++ dlls/mf/tests/resource.rc | 9 ++ dlls/mf/tests/test-unaligned.mp4 | Bin 0 -> 3988 bytes 3 files changed, 212 insertions(+) create mode 100644 dlls/mf/tests/test-unaligned.mp4
diff --git a/dlls/mf/tests/mf.c b/dlls/mf/tests/mf.c index c56e59fbc6c..58d6aead18e 100644 --- a/dlls/mf/tests/mf.c +++ b/dlls/mf/tests/mf.c @@ -3039,6 +3039,12 @@ static HRESULT WINAPI test_grabber_callback_OnProcessSample(IMFSampleGrabberSink HRESULT hr; DWORD res;
+ if (grabber->ready_event && !grabber->done_event) + { + SetEvent(grabber->ready_event); + return S_OK; + } + if (!grabber->ready_event) return E_NOTIMPL;
@@ -6584,6 +6590,202 @@ static void test_MFCreateSequencerSegmentOffset(void) PropVariantClear(&propvar); }
+static IMFTransform *topology_get_transform(IMFTopology *topology) +{ + IMFTransform *transform; + IMFTopologyNode *node; + MF_TOPOLOGY_TYPE type; + HRESULT hr; + WORD count; + UINT i; + + hr = IMFTopology_GetNodeCount(topology, &count); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + for (i = 0; i < count; ++i) + { + hr = IMFTopology_GetNode(topology, i, &node); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFTopologyNode_GetNodeType(node, &type); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + if (type == MF_TOPOLOGY_TRANSFORM_NODE) + { + hr = IMFTopologyNode_GetObject(node, (IUnknown **)&transform); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + IMFTopologyNode_Release(node); + return transform; + } + IMFTopologyNode_Release(node); + } + + return NULL; +} + +#define get_current_media_type_frame_size(a) get_current_media_type_frame_size_(__LINE__, (IUnknown *)a) +static UINT64 get_current_media_type_frame_size_(int line, IUnknown *unknown) +{ + IMFMediaTypeHandler *handler; + IMFMediaType *output_type; + IMFTransform *transform; + UINT64 frame_size; + HRESULT hr; + + /* Wine does not currently use a transform. */ + if (!unknown) + return 0; + + if (SUCCEEDED(IUnknown_QueryInterface(unknown, &IID_IMFTransform, (void **)&transform))) + { + hr = IMFTransform_GetOutputCurrentType(transform, 0, &output_type); + ok_(__FILE__, line)(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaType_GetUINT64(output_type, &MF_MT_FRAME_SIZE, &frame_size); + ok_(__FILE__, line)(hr == S_OK, "Unexpected hr %#lx.\n", hr); + IMFMediaType_Release(output_type); + IMFTransform_Release(transform); + return frame_size; + } + + hr = IUnknown_QueryInterface(unknown, &IID_IMFMediaTypeHandler, (void **)&handler); + ok_(__FILE__, line)(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, &output_type); + ok_(__FILE__, line)(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaType_GetUINT64(output_type, &MF_MT_FRAME_SIZE, &frame_size); + ok_(__FILE__, line)(hr == S_OK, "Unexpected hr %#lx.\n", hr); + IMFMediaType_Release(output_type); + IMFMediaTypeHandler_Release(handler); + return frame_size; +} + +static void test_h264_output_alignment(void) +{ + media_type_desc video_nv12_desc = + { + ATTR_GUID(MF_MT_MAJOR_TYPE, MFMediaType_Video), + ATTR_GUID(MF_MT_SUBTYPE, MFVideoFormat_NV12), + }; + struct test_grabber_callback *grabber_callback; + IMFTopology *topology, *resolved_topology; + struct test_callback *test_callback; + IMFMediaTypeHandler *handler; + IMFActivate *sink_activate; + IMFTopoLoader *topo_loader; + IMFStreamSink *stream_sink; + IMFAsyncCallback *callback; + IMFMediaType *output_type; + IMFMediaSession *session; + IMFMediaSink *media_sink; + IMFTransform *transform; + IMFMediaSource *source; + PROPVARIANT propvar; + UINT64 frame_size; + UINT32 status; + HRESULT hr; + + hr = MFStartup(MF_VERSION, MFSTARTUP_FULL); + ok(hr == S_OK, "Failed to start up, hr %#lx.\n", hr); + + if (!(source = create_media_source(L"test-unaligned.mp4", L"video/mp4"))) + { + todo_wine /* Gitlab CI Debian runner */ + win_skip("MP4 media source is not supported, skipping tests.\n"); + MFShutdown(); + return; + } + + grabber_callback = impl_from_IMFSampleGrabberSinkCallback(create_test_grabber_callback()); + grabber_callback->ready_event = CreateEventW(NULL, FALSE, FALSE, NULL); + ok(!!grabber_callback->ready_event, "CreateEventW failed, error %lu\n", GetLastError()); + + hr = MFCreateMediaType(&output_type); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + init_media_type(output_type, video_nv12_desc, -1); + hr = MFCreateSampleGrabberSinkActivate(output_type, &grabber_callback->IMFSampleGrabberSinkCallback_iface, &sink_activate); + ok(hr == S_OK, "Failed to create grabber sink, hr %#lx.\n", hr); + IMFMediaType_Release(output_type); + + IMFActivate_ActivateObject(sink_activate, &IID_IMFMediaSink, (void **)&media_sink); + hr = IMFMediaSink_GetStreamSinkByIndex(media_sink, 0, &stream_sink); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + IMFActivate_Release(sink_activate); + topology = create_test_topology_unk(source, (IUnknown *)stream_sink, NULL, NULL); + hr = MFCreateTopoLoader(&topo_loader); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFTopoLoader_Load(topo_loader, topology, &resolved_topology, NULL); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + IMFTopology_Release(topology); + IMFTopoLoader_Release(topo_loader); + + hr = IMFStreamSink_GetMediaTypeHandler(stream_sink, &handler); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaTypeHandler_GetCurrentMediaType(handler, &output_type); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaType_GetUINT64(output_type, &MF_MT_FRAME_SIZE, &frame_size); + ok(hr == MF_E_ATTRIBUTENOTFOUND, "Unexpected hr %#lx.\n", hr); + IMFMediaType_Release(output_type); + + hr = MFCreateMediaSession(NULL, &session); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaSession_SetTopology(session, 0, resolved_topology); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + transform = topology_get_transform(resolved_topology); + IMFTopology_Release(resolved_topology); + + callback = create_test_callback(TRUE); + hr = wait_media_event(session, callback, MESessionTopologySet, 1000, &propvar); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + + test_callback = impl_from_IMFAsyncCallback(callback); + hr = wait_media_event(session, callback, MESessionTopologyStatus, 1000, &propvar); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaEvent_GetUINT32(test_callback->media_event, &MF_EVENT_TOPOLOGY_STATUS, &status); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + ok(status == MF_TOPOSTATUS_READY, "Unexpected status %d.\n", status); + + frame_size = get_current_media_type_frame_size(transform); + todo_wine + ok(frame_size == (((UINT64)64 << 32) | 72), "Unexpected frame size %#llx\n", frame_size); + frame_size = get_current_media_type_frame_size(handler); + ok(frame_size == (((UINT64)64 << 32) | 72), "Unexpected frame size %#llx\n", frame_size); + + propvar.vt = VT_EMPTY; + hr = IMFMediaSession_Start(session, &GUID_NULL, &propvar); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + + /* frame size change occurs before MESessionStarted */ + hr = wait_media_event(session, callback, MESessionStarted, 5000, &propvar); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + frame_size = get_current_media_type_frame_size(transform); + todo_wine + ok(frame_size == (((UINT64)64 << 32) | 80), "Unexpected frame size %#llx\n", frame_size); + frame_size = get_current_media_type_frame_size(handler); + todo_wine + ok(frame_size == (((UINT64)64 << 32) | 80), "Unexpected frame size %#llx\n", frame_size); + + hr = IMFMediaSession_Stop(session); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaSession_Close(session); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = wait_media_event(session, callback, MESessionClosed, 1000, &propvar); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + + hr = IMFMediaSource_Shutdown(source); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + hr = IMFMediaSession_Shutdown(session); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + + IMFMediaTypeHandler_Release(handler); + if (transform) + IMFTransform_Release(transform); + IMFAsyncCallback_Release(callback); + IMFMediaSession_Release(session); + IMFStreamSink_Release(stream_sink); + IMFMediaSink_Release(media_sink); + IMFSampleGrabberSinkCallback_Release(&grabber_callback->IMFSampleGrabberSinkCallback_iface); + IMFMediaSource_Release(source); + + hr = MFShutdown(); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); +} + static void test_media_session_Start(void) { static const struct object_state_record expected_object_state_records[] = @@ -8087,6 +8289,7 @@ START_TEST(mf) test_MFRequireProtectedEnvironment(); test_mpeg4_media_sink(); test_MFCreateSequencerSegmentOffset(); + test_h264_output_alignment(); test_media_session_Start(); test_MFEnumDeviceSources(); test_media_session_Close(); diff --git a/dlls/mf/tests/resource.rc b/dlls/mf/tests/resource.rc index dff5719dd3b..2a69a842ce8 100644 --- a/dlls/mf/tests/resource.rc +++ b/dlls/mf/tests/resource.rc @@ -185,3 +185,12 @@ rgb24frame.bmp RCDATA rgb24frame.bmp */ /* @makedep: test.mp4 */ test.mp4 RCDATA test.mp4 + +/* Generated with: + * gst-launch-1.0 videotestsrc num-buffers=60 pattern=smpte100 ! \ + * video/x-raw,format=I420,width=72,height=64,framerate=30000/1001 ! \ + * videoflip method=clockwise ! videoconvert ! \ + * x264enc ! mp4mux ! filesink location=dlls/mf/tests/test-unaligned.mp4 + */ +/* @makedep: test-unaligned.mp4 */ +test-unaligned.mp4 RCDATA test-unaligned.mp4 diff --git a/dlls/mf/tests/test-unaligned.mp4 b/dlls/mf/tests/test-unaligned.mp4 new file mode 100644 index 0000000000000000000000000000000000000000..5920da40daaf55dc69a5a02577891c70906fed94 GIT binary patch literal 3988 zcmZQzU{FXasVvAXFfn3aU|;~zxdkSMnZ^0JnZ@}aF^;sN)KmrrPSxC$#1aMu1}07c z1_lP{^b`h>H8)-KpB{*6W@Zj*U|{^xz)))7-X(IHfq{WF<Mo?OIt&a<-`H6H|NnHy z_2u4YH$Apb)48E=Q~BNd3L`TU1zm;Y{GwC^Lo*YFB4a}X3k74tR71-&O9fp84?QC@ z6Mf$RS9e_#1;;RFh2;E{)MN!+1?T*N%AC}+5(Ogz17lqy10!PvU4@L2k^(Dz{qpj1 zy|T=d)cl;pJiYv)bbXL5dKo3TISRT8`2{7J`FX`w3dxB{iOIHx3Pq`Dw#Eu6sYyBc z$=SAsRt8oE3W<4%IhDn!wgwf(Rt6P@hQ<oHskRxZ6$-_rNx7-E<_ZPHm9~Z;GQKFq z)=<yDz{)_+z(654vm!Mm9%Q1SLT+k&QDR<ts;!}!LUKk?er{rXZmO-JLP=3-PEKaA zt)YTNg+)qoiLIeRa$&BmfkH}ZVoFthUaGB;p^l-ULRw;RNqj+Zc4h%c1;l{Dg82Nj zwBpnfTU{fCl8mC%#FS!NBZZv&{OrVx)Wno{n3$nLaZYA(Dnh_OA+HE*M{;IvVhP9{ znRz9tMLCJdsVTMw3Q0MoMTwR1$@#eji6yoM3d#9-#U(|FnR%%x@tJugMTsCaX+?>- zsl~R&3Q6$=l|_lUnJKnL3Q6&aDTxIjUnIpRWhNGbEXgcN1^cT!H8VY<B+1rLA-^Cs zFFrlLz}7$kB3NK+q>!CjnVDB&Yh-B&Wya@b=GhuqDikND=A|Z=me`sYD1dDT1!+-g zafYpdLQ!%&+`Az8qGa3Tq#}jfq>`dkkhhXDONu}qG%_%;Pyn$?@^e5jq)-U*oUMVL znSnxK0mvdSomgROW~oqEP+XE)U~8gKmQ)s>n^*zTXA3p~B#=~^R-9RtYHMg@WTB9k zm=m8-lwzBgpO>nTmYI{23JTZEg7~7ulFWQtLp>7%g~UQzLn~0KU}#`qU}Q<{Xkn20 z|K`7+{kA6+Qd^2I`~RD(IQt;`!_!ZS`W{3tl$(9;*`dYfgPxbnlh+ChU7Q+gb(=+I z{(`-Sx|+GYWg_lec%)u?W%Y`b1Jit*Cg*>g_O<)J{Kj-=af=s=mSoHP-^1=C>K-zG z?xyvgJlpH1sxN-E)OeBDHirG{&8q#AGOG#=G{35ZD@-(Bae+l8>hs^Vsqd=mnQkPl ze%hF867*ujlUJ(>el5Jw&lM#!jpNT$ncp^=brbx$zothi8rom{e)i~|I<I;6{_oNM z=CJc~rD<}2rv&rc69Fc@)%@4zNoCzVWO%nLM<MPTgFxq*hf0^9o@1C^Qr(r&kzqLV zxBjQ)%ihjW4hNSP1`G@g+>WzUavazHyR|Gi11uQ8z`(%iIM1n~=|4l9BSMIAUSf%3 zKEt#IxDW^9yyPrLd1i!Rf{wE?JXbho%=F<f{SPuS6Rw!sabBCNppMvohG~s(K@P@w zOG_N>87tu;oQ(69XF2*ayo6W-a-pE(tTmo19CP4?BHYRCIPa9JsE)*c1`|bOBVMAp zl#_AZ>nw!hp{9O7F%{XV^ZBrtI$sxTD#G=gjPvy|Or33lVk)v*=LcakwGeD7#Jk|I zXPjS*X=(+EsVHup1~pXyDFo(k1)GZE*6m<ZAwrN4n7s$ZR1~+~f|`mPuJeC_O+|6* zZ%k7kpqPs6)_HPJQ<2>|&lbbfdG;8l&Qd`!71^!xoS>#6yA>m~a)MK9J}mh`LI9jx z5h)ABt!>y$T?%$9BoHC71xl~*YymZOG`+&otMUJT*Oo>jhwFR_((7($8qod!Z>!ec z2k->X?KuCYtEi4RT8TCP7dRO;Ffg#W=jP{^F)%RX<d$WmfErX!?y&TLFatxW0RzLU zISh;pAOw<vU`7Z9C(-y0a0#poCI$x9X(dI8*$fN}F(uhxJJ~_@fiMHys#kL`bfejW z>L>;Vu)QF{1FTaeHKnAOfq_9LHK!QV2m}c-g8jq5ehH$NWovFqW+JFTnVSN32Ls3r zAPn<+=n;@M2HlL5oFXubfq?<kV1uzibQq`s=aHC~l9LKj!;+AjnU}`Ez#vkV3pNzl z*(xazIhmBARFE2wevmv*X;BU+=QA=euqYIlB;_zLFkC1uDF#OfG*AvCmL(g4G(h=K zCX{ku@L&LW9E3qaAX7m!ZY=TtKLZ1Uabj7rGh+&a$p43UTgZ&?1~P+4Qb`dcL_tnw zPyxlHaB_Z5QC@OR1p^xxGB7X*6eJcGK-~&*jYM$?I6^=!0`YAa7?@vz!l}5V7!*-3 zagdx$aY=D9NB~K{4TR0eQe0A81(gF)HVh0bpwdN@fq_97iiJS!eFg>wkQj&!5|@VZ zL2M8n!hFUT$%wGDhJ*|IB?v9t3!!0rP!NHVJ2<Qv85l<82Y2}JF98+ah`f=U4~{`d z!3av{k)<gmph7D!Hx*2Sq!nQWRBlF2QEo~ms2~D~!?8*xq!g4{S&|PjP$VT0tQnNq V7(l&F1_lOOsKKVB7|a1O7yw{rbdCT3
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From: Conor McCarthy cmccarthy@codeweavers.com
The transform returns MF_E_TRANSFORM_STREAM_CHANGE to trigger a change of output type to the aligned frame size. --- dlls/mf/tests/transform.c | 112 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+)
diff --git a/dlls/mf/tests/transform.c b/dlls/mf/tests/transform.c index 8a80275b8d5..e6ff4a0836d 100644 --- a/dlls/mf/tests/transform.c +++ b/dlls/mf/tests/transform.c @@ -236,6 +236,25 @@ static void load_resource(const WCHAR *filename, const BYTE **data, DWORD *lengt *length = SizeofResource(GetModuleHandleW(NULL), resource); }
+static IMFMediaType *transform_find_available_output_type(IMFTransform *transform, const GUID *desired) +{ + IMFMediaType *output_type = NULL; + GUID subtype; + HRESULT hr; + UINT i = 0; + + while (SUCCEEDED(hr = IMFTransform_GetOutputAvailableType(transform, 0, i++, &output_type))) + { + IMFMediaType_GetGUID(output_type, &MF_MT_SUBTYPE, &subtype); + if (IsEqualGUID(&subtype, desired)) + break; + IMFMediaType_Release(output_type); + output_type = NULL; + } + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + return output_type; +} + #define EXPECT_REF(obj,ref) _expect_ref((IUnknown*)obj, ref, __LINE__) static void _expect_ref(IUnknown* obj, ULONG expected_refcount, int line) { @@ -5568,6 +5587,98 @@ failed: CoUninitialize(); }
+static void test_h264_decoder_alignment(void) +{ + static const DWORD actual_width = 82, actual_height = 84; + static const DWORD aligned_width = 96, aligned_height = 96; + + const struct attribute_desc input_type_desc[] = + { + ATTR_GUID(MF_MT_MAJOR_TYPE, MFMediaType_Video, .required = TRUE), + ATTR_GUID(MF_MT_SUBTYPE, MFVideoFormat_H264, .required = TRUE), + ATTR_RATIO(MF_MT_FRAME_SIZE, actual_width, actual_height), + {0}, + }; + + IMFSample *input_sample, *output_sample; + const BYTE *h264_encoded_data; + ULONG h264_encoded_data_len; + IMFMediaType *output_type; + IMFTransform *transform; + DWORD output_status; + UINT64 frame_size; + HRESULT hr; + + hr = CoInitialize(NULL); + ok(hr == S_OK, "Failed to initialize, hr %#lx.\n", hr); + + winetest_push_context("h264dec alignment"); + + if (FAILED(hr = CoCreateInstance(&CLSID_MSH264DecoderMFT, NULL, CLSCTX_INPROC_SERVER, + &IID_IMFTransform, (void **)&transform))) + goto failed; + + load_resource(L"h264data.bin", &h264_encoded_data, &h264_encoded_data_len); + + check_mft_set_input_type(transform, input_type_desc, S_OK); + + output_type = transform_find_available_output_type(transform, &MFVideoFormat_NV12); + hr = IMFMediaType_GetUINT64(output_type, &MF_MT_FRAME_SIZE, &frame_size); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + ok(frame_size == (((UINT64)actual_width << 32) | actual_height), "Unexpected frame size %#llx\n", frame_size); + + hr = IMFTransform_SetOutputType(transform, 0, output_type, 0); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + IMFMediaType_Release(output_type); + + hr = IMFTransform_ProcessMessage(transform, MFT_MESSAGE_NOTIFY_START_OF_STREAM, 0); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + + output_sample = create_sample(NULL, aligned_width * aligned_height * 3 / 2); + output_type = NULL; + do + { + MFT_OUTPUT_DATA_BUFFER output = {.pSample = output_sample}; + + hr = IMFTransform_ProcessOutput(transform, 0, 1, &output, &output_status); + ok(hr == S_OK || hr == MF_E_TRANSFORM_STREAM_CHANGE || hr == MF_E_TRANSFORM_NEED_MORE_INPUT, + "ProcessOutput returned %#lx\n", hr); + + if (hr == S_OK) + { + ok(!!output_type, "Stream change not received.\n"); + IMFSample_Release(output_sample); + output_sample = create_sample(NULL, aligned_width * aligned_height * 3 / 2); + } + else if (hr == MF_E_TRANSFORM_NEED_MORE_INPUT && h264_encoded_data_len > 4) + { + input_sample = next_h264_sample(&h264_encoded_data, &h264_encoded_data_len); + hr = IMFTransform_ProcessInput(transform, 0, input_sample, 0); + ok(hr == S_OK, "ProcessInput returned %#lx\n", hr); + IMFSample_Release(input_sample); + } + else if (hr == MF_E_TRANSFORM_STREAM_CHANGE) + { + /* The H.264 decoder sends a format change once the aligned frame size is known. */ + output_type = transform_find_available_output_type(transform, &MFVideoFormat_NV12); + hr = IMFMediaType_GetUINT64(output_type, &MF_MT_FRAME_SIZE, &frame_size); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + ok(frame_size == (((UINT64)aligned_width << 32) | aligned_height), "Unexpected frame size %#llx\n", frame_size); + + hr = IMFTransform_SetOutputType(transform, 0, output_type, 0); + ok(hr == S_OK, "Unexpected hr %#lx.\n", hr); + IMFMediaType_Release(output_type); + } + } while (hr == S_OK); + + IMFSample_Release(output_sample); + IMFTransform_Release(transform); + +failed: + winetest_pop_context(); + CoUninitialize(); +} + static void test_h264_decoder_concat_streams(void) { const struct buffer_desc output_buffer_desc[] = @@ -11154,6 +11265,7 @@ START_TEST(transform) test_h264_encoder(); test_h264_decoder(); test_h264_decoder_timestamps(); + test_h264_decoder_alignment(); test_wmv_encoder(); test_wmv_decoder(); test_wmv_decoder_timestamps();
I got rid of the `MESessionTopologyStatus` check for `MF_TOPOSTATUS_STARTED_SOURCE`. We don't need it and the frame size check has a race condition which can cause test failure on Windows at least.
Bigger problem is that existing tests are already unstable. One thing is that running offline breaks in test_scheme_resolvers(), on Windows, that's easy to skip. But then I get sporadic failures in test_media_session_source_shutdown() when test is waiting forever, even if tests don't hang or crash I get different number of executed tests each time I run the test. I can understand if something async occasionally works differently, but executed test numbers are fluctuating in order of thousands.
I think we need to make this stable first, before adding more. Latest Windows 11 release gives even worse results.
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Conor McCarthy -
Conor McCarthy (＠cmccarthy)
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Nikolay Sivov (＠nsivov)