diff options
Diffstat (limited to '')
| -rw-r--r-- | dom/media/platforms/wmf/WMFUtils.cpp | 623 |
1 files changed, 623 insertions, 0 deletions
diff --git a/dom/media/platforms/wmf/WMFUtils.cpp b/dom/media/platforms/wmf/WMFUtils.cpp new file mode 100644 index 0000000000..67bd420b8d --- /dev/null +++ b/dom/media/platforms/wmf/WMFUtils.cpp @@ -0,0 +1,623 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=2 sw=2 sts=2 et cindent: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "WMFUtils.h" + +#include <mfidl.h> +#include <shlobj.h> +#include <shlwapi.h> +#include <initguid.h> +#include <stdint.h> + +#ifdef MOZ_AV1 +# include "AOMDecoder.h" +#endif +#include "MP4Decoder.h" +#include "OpusDecoder.h" +#include "VideoUtils.h" +#include "VorbisDecoder.h" +#include "VPXDecoder.h" +#include "mozilla/ArrayUtils.h" +#include "mozilla/CheckedInt.h" +#include "mozilla/Logging.h" +#include "mozilla/RefPtr.h" +#include "nsTArray.h" +#include "nsThreadUtils.h" +#include "nsWindowsHelpers.h" +#include "prenv.h" +#include "mozilla/mscom/EnsureMTA.h" +#include "mozilla/WindowsVersion.h" + +#ifndef WAVE_FORMAT_OPUS +# define WAVE_FORMAT_OPUS 0x704F +#endif +DEFINE_GUID(MEDIASUBTYPE_OPUS, WAVE_FORMAT_OPUS, 0x000, 0x0010, 0x80, 0x00, + 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71); + +namespace mozilla { + +using media::TimeUnit; + +bool StreamTypeIsVideo(const WMFStreamType& aType) { + switch (aType) { + case WMFStreamType::H264: + case WMFStreamType::VP8: + case WMFStreamType::VP9: + case WMFStreamType::AV1: + return true; + default: + return false; + } +} + +bool StreamTypeIsAudio(const WMFStreamType& aType) { + switch (aType) { + case WMFStreamType::MP3: + case WMFStreamType::AAC: + case WMFStreamType::OPUS: + case WMFStreamType::VORBIS: + return true; + default: + return false; + } +} + +// Get a string representation of the stream type. Useful for logging. +const char* StreamTypeToString(WMFStreamType aStreamType) { + switch (aStreamType) { + case WMFStreamType::H264: + return "H264"; + case WMFStreamType::VP8: + return "VP8"; + case WMFStreamType::VP9: + return "VP9"; + case WMFStreamType::AV1: + return "AV1"; + case WMFStreamType::MP3: + return "MP3"; + case WMFStreamType::AAC: + return "AAC"; + case WMFStreamType::OPUS: + return "OPUS"; + case WMFStreamType::VORBIS: + return "VORBIS"; + default: + MOZ_ASSERT(aStreamType == WMFStreamType::Unknown); + return "Unknown"; + } +} + +WMFStreamType GetStreamTypeFromMimeType(const nsCString& aMimeType) { + if (MP4Decoder::IsH264(aMimeType)) { + return WMFStreamType::H264; + } + if (VPXDecoder::IsVP8(aMimeType)) { + return WMFStreamType::VP8; + } + if (VPXDecoder::IsVP9(aMimeType)) { + return WMFStreamType::VP9; + } +#ifdef MOZ_AV1 + if (AOMDecoder::IsAV1(aMimeType)) { + return WMFStreamType::AV1; + } +#endif + if (aMimeType.EqualsLiteral("audio/mp4a-latm") || + aMimeType.EqualsLiteral("audio/mp4")) { + return WMFStreamType::AAC; + } + if (aMimeType.EqualsLiteral("audio/mpeg")) { + return WMFStreamType::MP3; + } + if (OpusDataDecoder::IsOpus(aMimeType)) { + return WMFStreamType::OPUS; + } + if (VorbisDataDecoder::IsVorbis(aMimeType)) { + return WMFStreamType::VORBIS; + } + return WMFStreamType::Unknown; +} + +HRESULT +HNsToFrames(int64_t aHNs, uint32_t aRate, int64_t* aOutFrames) { + MOZ_ASSERT(aOutFrames); + const int64_t HNS_PER_S = USECS_PER_S * 10; + CheckedInt<int64_t> i = aHNs; + i *= aRate; + i /= HNS_PER_S; + NS_ENSURE_TRUE(i.isValid(), E_FAIL); + *aOutFrames = i.value(); + return S_OK; +} + +HRESULT +GetDefaultStride(IMFMediaType* aType, uint32_t aWidth, uint32_t* aOutStride) { + // Try to get the default stride from the media type. + HRESULT hr = aType->GetUINT32(MF_MT_DEFAULT_STRIDE, aOutStride); + if (SUCCEEDED(hr)) { + return S_OK; + } + + // Stride attribute not set, calculate it. + GUID subtype = GUID_NULL; + + hr = aType->GetGUID(MF_MT_SUBTYPE, &subtype); + NS_ENSURE_TRUE(SUCCEEDED(hr), hr); + + hr = wmf::MFGetStrideForBitmapInfoHeader(subtype.Data1, aWidth, + (LONG*)(aOutStride)); + NS_ENSURE_TRUE(SUCCEEDED(hr), hr); + + return hr; +} + +Maybe<gfx::YUVColorSpace> GetYUVColorSpace(IMFMediaType* aType) { + UINT32 yuvColorMatrix; + HRESULT hr = aType->GetUINT32(MF_MT_YUV_MATRIX, &yuvColorMatrix); + NS_ENSURE_TRUE(SUCCEEDED(hr), {}); + + switch (yuvColorMatrix) { + case MFVideoTransferMatrix_BT2020_10: + case MFVideoTransferMatrix_BT2020_12: + return Some(gfx::YUVColorSpace::BT2020); + case MFVideoTransferMatrix_BT709: + return Some(gfx::YUVColorSpace::BT709); + case MFVideoTransferMatrix_BT601: + return Some(gfx::YUVColorSpace::BT601); + default: + MOZ_ASSERT_UNREACHABLE("Unhandled MFVideoTransferMatrix_?"); + return {}; + } +} + +int32_t MFOffsetToInt32(const MFOffset& aOffset) { + return int32_t(aOffset.value + (aOffset.fract / 65536.0f)); +} + +TimeUnit GetSampleDuration(IMFSample* aSample) { + NS_ENSURE_TRUE(aSample, TimeUnit::Invalid()); + int64_t duration = 0; + HRESULT hr = aSample->GetSampleDuration(&duration); + NS_ENSURE_TRUE(SUCCEEDED(hr), TimeUnit::Invalid()); + return TimeUnit::FromMicroseconds(HNsToUsecs(duration)); +} + +TimeUnit GetSampleTime(IMFSample* aSample) { + NS_ENSURE_TRUE(aSample, TimeUnit::Invalid()); + LONGLONG timestampHns = 0; + HRESULT hr = aSample->GetSampleTime(×tampHns); + NS_ENSURE_TRUE(SUCCEEDED(hr), TimeUnit::Invalid()); + return TimeUnit::FromMicroseconds(HNsToUsecs(timestampHns)); +} + +// Gets the sub-region of the video frame that should be displayed. +// See: +// http://msdn.microsoft.com/en-us/library/windows/desktop/bb530115(v=vs.85).aspx +HRESULT +GetPictureRegion(IMFMediaType* aMediaType, gfx::IntRect& aOutPictureRegion) { + // Determine if "pan and scan" is enabled for this media. If it is, we + // only display a region of the video frame, not the entire frame. + BOOL panScan = + MFGetAttributeUINT32(aMediaType, MF_MT_PAN_SCAN_ENABLED, FALSE); + + // If pan and scan mode is enabled. Try to get the display region. + HRESULT hr = E_FAIL; + MFVideoArea videoArea; + memset(&videoArea, 0, sizeof(MFVideoArea)); + if (panScan) { + hr = aMediaType->GetBlob(MF_MT_PAN_SCAN_APERTURE, (UINT8*)&videoArea, + sizeof(MFVideoArea), nullptr); + } + + // If we're not in pan-and-scan mode, or the pan-and-scan region is not set, + // check for a minimimum display aperture. + if (!panScan || hr == MF_E_ATTRIBUTENOTFOUND) { + hr = aMediaType->GetBlob(MF_MT_MINIMUM_DISPLAY_APERTURE, (UINT8*)&videoArea, + sizeof(MFVideoArea), nullptr); + } + + if (hr == MF_E_ATTRIBUTENOTFOUND) { + // Minimum display aperture is not set, for "backward compatibility with + // some components", check for a geometric aperture. + hr = aMediaType->GetBlob(MF_MT_GEOMETRIC_APERTURE, (UINT8*)&videoArea, + sizeof(MFVideoArea), nullptr); + } + + if (SUCCEEDED(hr)) { + // The media specified a picture region, return it. + aOutPictureRegion = gfx::IntRect(MFOffsetToInt32(videoArea.OffsetX), + MFOffsetToInt32(videoArea.OffsetY), + videoArea.Area.cx, videoArea.Area.cy); + return S_OK; + } + + // No picture region defined, fall back to using the entire video area. + UINT32 width = 0, height = 0; + hr = MFGetAttributeSize(aMediaType, MF_MT_FRAME_SIZE, &width, &height); + NS_ENSURE_TRUE(SUCCEEDED(hr), hr); + NS_ENSURE_TRUE(width <= MAX_VIDEO_WIDTH, E_FAIL); + NS_ENSURE_TRUE(height <= MAX_VIDEO_HEIGHT, E_FAIL); + + aOutPictureRegion = gfx::IntRect(0, 0, width, height); + return S_OK; +} + +nsString GetProgramW6432Path() { + char* programPath = PR_GetEnvSecure("ProgramW6432"); + if (!programPath) { + programPath = PR_GetEnvSecure("ProgramFiles"); + } + + if (!programPath) { + return u"C:\\Program Files"_ns; + } + return NS_ConvertUTF8toUTF16(programPath); +} + +const char* MFTMessageTypeToStr(MFT_MESSAGE_TYPE aMsg) { + switch (aMsg) { + case MFT_MESSAGE_COMMAND_FLUSH: + return "MFT_MESSAGE_COMMAND_FLUSH"; + case MFT_MESSAGE_COMMAND_DRAIN: + return "MFT_MESSAGE_COMMAND_DRAIN"; + case MFT_MESSAGE_COMMAND_MARKER: + return "MFT_MESSAGE_COMMAND_MARKER"; + case MFT_MESSAGE_SET_D3D_MANAGER: + return "MFT_MESSAGE_SET_D3D_MANAGER"; + case MFT_MESSAGE_NOTIFY_BEGIN_STREAMING: + return "MFT_MESSAGE_NOTIFY_BEGIN_STREAMING"; + case MFT_MESSAGE_NOTIFY_END_STREAMING: + return "MFT_MESSAGE_NOTIFY_END_STREAMING"; + case MFT_MESSAGE_NOTIFY_END_OF_STREAM: + return "MFT_MESSAGE_NOTIFY_END_OF_STREAM"; + case MFT_MESSAGE_NOTIFY_START_OF_STREAM: + return "MFT_MESSAGE_NOTIFY_START_OF_STREAM"; +#if !defined(__MINGW32__) + // These messages are not defined in MinGW header. See bug 1740359. + case MFT_MESSAGE_DROP_SAMPLES: + return "MFT_MESSAGE_DROP_SAMPLES"; + case MFT_MESSAGE_COMMAND_TICK: + return "MFT_MESSAGE_COMMAND_TICK"; + case MFT_MESSAGE_NOTIFY_RELEASE_RESOURCES: + return "MFT_MESSAGE_NOTIFY_RELEASE_RESOURCES"; + case MFT_MESSAGE_NOTIFY_REACQUIRE_RESOURCES: + return "MFT_MESSAGE_NOTIFY_REACQUIRE_RESOURCES"; + case MFT_MESSAGE_NOTIFY_EVENT: + return "MFT_MESSAGE_NOTIFY_EVENT"; + case MFT_MESSAGE_COMMAND_SET_OUTPUT_STREAM_STATE: + return "MFT_MESSAGE_COMMAND_SET_OUTPUT_STREAM_STATE"; + case MFT_MESSAGE_COMMAND_FLUSH_OUTPUT_STREAM: + return "MFT_MESSAGE_COMMAND_FLUSH_OUTPUT_STREAM"; +#endif + default: + return "Invalid message?"; + } +} + +GUID AudioMimeTypeToMediaFoundationSubtype(const nsACString& aMimeType) { + if (aMimeType.EqualsLiteral("audio/mpeg")) { + return MFAudioFormat_MP3; + } else if (MP4Decoder::IsAAC(aMimeType)) { + return MFAudioFormat_AAC; + } else if (VorbisDataDecoder::IsVorbis(aMimeType)) { + return MFAudioFormat_Vorbis; + } else if (OpusDataDecoder::IsOpus(aMimeType)) { + return MFAudioFormat_Opus; + } + NS_WARNING("Unsupport audio mimetype"); + return GUID_NULL; +} + +GUID VideoMimeTypeToMediaFoundationSubtype(const nsACString& aMimeType) { + if (MP4Decoder::IsH264(aMimeType)) { + return MFVideoFormat_H264; + } else if (VPXDecoder::IsVP8(aMimeType)) { + return MFVideoFormat_VP80; + } else if (VPXDecoder::IsVP9(aMimeType)) { + return MFVideoFormat_VP90; + } +#ifdef MOZ_AV1 + else if (AOMDecoder::IsAV1(aMimeType)) { + return MFVideoFormat_AV1; + } +#endif + NS_WARNING("Unsupport video mimetype"); + return GUID_NULL; +} + +void AACAudioSpecificConfigToUserData(uint8_t aAACProfileLevelIndication, + const uint8_t* aAudioSpecConfig, + uint32_t aConfigLength, + nsTArray<BYTE>& aOutUserData) { + MOZ_ASSERT(aOutUserData.IsEmpty()); + + // The MF_MT_USER_DATA for AAC is defined here: + // http://msdn.microsoft.com/en-us/library/windows/desktop/dd742784%28v=vs.85%29.aspx + // + // For MFAudioFormat_AAC, MF_MT_USER_DATA contains the portion of + // the HEAACWAVEINFO structure that appears after the WAVEFORMATEX + // structure (that is, after the wfx member). This is followed by + // the AudioSpecificConfig() data, as defined by ISO/IEC 14496-3. + // [...] + // The length of the AudioSpecificConfig() data is 2 bytes for AAC-LC + // or HE-AAC with implicit signaling of SBR/PS. It is more than 2 bytes + // for HE-AAC with explicit signaling of SBR/PS. + // + // The value of audioObjectType as defined in AudioSpecificConfig() + // must be 2, indicating AAC-LC. The value of extensionAudioObjectType + // must be 5 for SBR or 29 for PS. + // + // HEAACWAVEINFO structure: + // typedef struct heaacwaveinfo_tag { + // WAVEFORMATEX wfx; + // WORD wPayloadType; + // WORD wAudioProfileLevelIndication; + // WORD wStructType; + // WORD wReserved1; + // DWORD dwReserved2; + // } + const UINT32 heeInfoLen = 4 * sizeof(WORD) + sizeof(DWORD); + + // The HEAACWAVEINFO must have payload and profile set, + // the rest can be all 0x00. + BYTE heeInfo[heeInfoLen] = {0}; + WORD* w = (WORD*)heeInfo; + w[0] = 0x0; // Payload type raw AAC packet + w[1] = aAACProfileLevelIndication; + + aOutUserData.AppendElements(heeInfo, heeInfoLen); + + if (aAACProfileLevelIndication == 2 && aConfigLength > 2) { + // The AudioSpecificConfig is TTTTTFFF|FCCCCGGG + // (T=ObjectType, F=Frequency, C=Channel, G=GASpecificConfig) + // If frequency = 0xf, then the frequency is explicitly defined on 24 bits. + int8_t frequency = + (aAudioSpecConfig[0] & 0x7) << 1 | (aAudioSpecConfig[1] & 0x80) >> 7; + int8_t channels = (aAudioSpecConfig[1] & 0x78) >> 3; + int8_t gasc = aAudioSpecConfig[1] & 0x7; + if (frequency != 0xf && channels && !gasc) { + // We enter this condition if the AudioSpecificConfig should theorically + // be 2 bytes long but it's not. + // The WMF AAC decoder will error if unknown extensions are found, + // so remove them. + aConfigLength = 2; + } + } + aOutUserData.AppendElements(aAudioSpecConfig, aConfigLength); +} + +namespace wmf { + +static const wchar_t* sDLLs[] = { + L"mfplat.dll", + L"mf.dll", + L"dxva2.dll", + L"evr.dll", +}; + +HRESULT +LoadDLLs() { + static bool sDLLsLoaded = false; + static bool sFailedToLoadDlls = false; + + if (sDLLsLoaded) { + return S_OK; + } + if (sFailedToLoadDlls) { + return E_FAIL; + } + + // Try to load all the required DLLs. If we fail to load any dll, + // unload the dlls we succeeded in loading. + nsTArray<const wchar_t*> loadedDlls; + for (const wchar_t* dll : sDLLs) { + if (!LoadLibrarySystem32(dll)) { + NS_WARNING("Failed to load WMF DLLs"); + for (const wchar_t* loadedDll : loadedDlls) { + FreeLibrary(GetModuleHandleW(loadedDll)); + } + sFailedToLoadDlls = true; + return E_FAIL; + } + loadedDlls.AppendElement(dll); + } + sDLLsLoaded = true; + + return S_OK; +} + +#define ENSURE_FUNCTION_PTR_HELPER(FunctionType, FunctionName, DLL) \ + static FunctionType FunctionName##Ptr = nullptr; \ + if (!FunctionName##Ptr) { \ + FunctionName##Ptr = (FunctionType)GetProcAddress( \ + GetModuleHandleW(L## #DLL), #FunctionName); \ + if (!FunctionName##Ptr) { \ + NS_WARNING("Failed to get GetProcAddress of " #FunctionName \ + " from " #DLL); \ + return E_FAIL; \ + } \ + } + +#define ENSURE_FUNCTION_PTR(FunctionName, DLL) \ + ENSURE_FUNCTION_PTR_HELPER(decltype(::FunctionName)*, FunctionName, DLL) + +#define ENSURE_FUNCTION_PTR_(FunctionName, DLL) \ + ENSURE_FUNCTION_PTR_HELPER(FunctionName##Ptr_t, FunctionName, DLL) + +#define DECL_FUNCTION_PTR(FunctionName, ...) \ + typedef HRESULT(STDMETHODCALLTYPE* FunctionName##Ptr_t)(__VA_ARGS__) + +HRESULT +MediaFoundationInitializer::MFStartup() { + if (IsWin7AndPre2000Compatible()) { + /* + * Specific exclude the usage of WMF on Win 7 with compatibility mode + * prior to Win 2000 as we may crash while trying to startup WMF. + * Using GetVersionEx API which takes compatibility mode into account. + * See Bug 1279171. + */ + return E_FAIL; + } + + HRESULT hr = LoadDLLs(); + if (FAILED(hr)) { + return hr; + } + + const int MF_WIN7_VERSION = (0x0002 << 16 | MF_API_VERSION); + + // decltype is unusable for functions having default parameters + DECL_FUNCTION_PTR(MFStartup, ULONG, DWORD); + ENSURE_FUNCTION_PTR_(MFStartup, Mfplat.dll) + + hr = E_FAIL; + mozilla::mscom::EnsureMTA( + [&]() -> void { hr = MFStartupPtr(MF_WIN7_VERSION, MFSTARTUP_FULL); }); + return hr; +} + +HRESULT +MediaFoundationInitializer::MFShutdown() { + ENSURE_FUNCTION_PTR(MFShutdown, Mfplat.dll) + HRESULT hr = E_FAIL; + mozilla::mscom::EnsureMTA([&]() -> void { hr = (MFShutdownPtr)(); }); + return hr; +} + +HRESULT +MFCreateMediaType(IMFMediaType** aOutMFType) { + ENSURE_FUNCTION_PTR(MFCreateMediaType, Mfplat.dll) + return (MFCreateMediaTypePtr)(aOutMFType); +} + +HRESULT +MFGetStrideForBitmapInfoHeader(DWORD aFormat, DWORD aWidth, LONG* aOutStride) { + ENSURE_FUNCTION_PTR(MFGetStrideForBitmapInfoHeader, evr.dll) + return (MFGetStrideForBitmapInfoHeaderPtr)(aFormat, aWidth, aOutStride); +} + +HRESULT MFGetService(IUnknown* punkObject, REFGUID guidService, REFIID riid, + LPVOID* ppvObject) { + ENSURE_FUNCTION_PTR(MFGetService, mf.dll) + return (MFGetServicePtr)(punkObject, guidService, riid, ppvObject); +} + +HRESULT +DXVA2CreateDirect3DDeviceManager9(UINT* pResetToken, + IDirect3DDeviceManager9** ppDXVAManager) { + ENSURE_FUNCTION_PTR(DXVA2CreateDirect3DDeviceManager9, dxva2.dll) + return (DXVA2CreateDirect3DDeviceManager9Ptr)(pResetToken, ppDXVAManager); +} + +HRESULT +MFCreateSample(IMFSample** ppIMFSample) { + ENSURE_FUNCTION_PTR(MFCreateSample, mfplat.dll) + return (MFCreateSamplePtr)(ppIMFSample); +} + +HRESULT +MFCreateAlignedMemoryBuffer(DWORD cbMaxLength, DWORD fAlignmentFlags, + IMFMediaBuffer** ppBuffer) { + ENSURE_FUNCTION_PTR(MFCreateAlignedMemoryBuffer, mfplat.dll) + return (MFCreateAlignedMemoryBufferPtr)(cbMaxLength, fAlignmentFlags, + ppBuffer); +} + +HRESULT +MFCreateDXGIDeviceManager(UINT* pResetToken, + IMFDXGIDeviceManager** ppDXVAManager) { + ENSURE_FUNCTION_PTR(MFCreateDXGIDeviceManager, mfplat.dll) + return (MFCreateDXGIDeviceManagerPtr)(pResetToken, ppDXVAManager); +} + +HRESULT +MFCreateDXGISurfaceBuffer(REFIID riid, IUnknown* punkSurface, + UINT uSubresourceIndex, BOOL fButtomUpWhenLinear, + IMFMediaBuffer** ppBuffer) { + ENSURE_FUNCTION_PTR(MFCreateDXGISurfaceBuffer, mfplat.dll) + return (MFCreateDXGISurfaceBufferPtr)(riid, punkSurface, uSubresourceIndex, + fButtomUpWhenLinear, ppBuffer); +} + +HRESULT +MFTEnumEx(GUID guidCategory, UINT32 Flags, + const MFT_REGISTER_TYPE_INFO* pInputType, + const MFT_REGISTER_TYPE_INFO* pOutputType, + IMFActivate*** pppMFTActivate, UINT32* pnumMFTActivate) { + ENSURE_FUNCTION_PTR(MFTEnumEx, mfplat.dll) + return (MFTEnumExPtr)(guidCategory, Flags, pInputType, pOutputType, + pppMFTActivate, pnumMFTActivate); +} + +HRESULT MFTGetInfo(CLSID clsidMFT, LPWSTR* pszName, + MFT_REGISTER_TYPE_INFO** ppInputTypes, UINT32* pcInputTypes, + MFT_REGISTER_TYPE_INFO** ppOutputTypes, + UINT32* pcOutputTypes, IMFAttributes** ppAttributes) { + ENSURE_FUNCTION_PTR(MFTGetInfo, mfplat.dll) + return (MFTGetInfoPtr)(clsidMFT, pszName, ppInputTypes, pcInputTypes, + ppOutputTypes, pcOutputTypes, ppAttributes); +} + +HRESULT +MFCreateAttributes(IMFAttributes** ppMFAttributes, UINT32 cInitialSize) { + ENSURE_FUNCTION_PTR(MFCreateAttributes, mfplat.dll) + return (MFCreateAttributesPtr)(ppMFAttributes, cInitialSize); +} + +HRESULT MFCreateEventQueue(IMFMediaEventQueue** ppMediaEventQueue) { + ENSURE_FUNCTION_PTR(MFCreateEventQueue, mfplat.dll) + return (MFCreateEventQueuePtr)(ppMediaEventQueue); +} + +HRESULT MFCreateStreamDescriptor(DWORD dwStreamIdentifier, DWORD cMediaTypes, + IMFMediaType** apMediaTypes, + IMFStreamDescriptor** ppDescriptor) { + ENSURE_FUNCTION_PTR(MFCreateStreamDescriptor, mfplat.dll) + return (MFCreateStreamDescriptorPtr)(dwStreamIdentifier, cMediaTypes, + apMediaTypes, ppDescriptor); +} + +HRESULT MFCreateAsyncResult(IUnknown* punkObject, IMFAsyncCallback* pCallback, + IUnknown* punkState, + IMFAsyncResult** ppAsyncResult) { + ENSURE_FUNCTION_PTR(MFCreateAsyncResult, mfplat.dll) + return (MFCreateAsyncResultPtr)(punkObject, pCallback, punkState, + ppAsyncResult); +} + +HRESULT MFCreatePresentationDescriptor( + DWORD cStreamDescriptors, IMFStreamDescriptor** apStreamDescriptors, + IMFPresentationDescriptor** ppPresentationDescriptor) { + ENSURE_FUNCTION_PTR(MFCreatePresentationDescriptor, mfplat.dll) + return (MFCreatePresentationDescriptorPtr)(cStreamDescriptors, + apStreamDescriptors, + ppPresentationDescriptor); +} + +HRESULT MFCreateMemoryBuffer(DWORD cbMaxLength, IMFMediaBuffer** ppBuffer) { + ENSURE_FUNCTION_PTR(MFCreateMemoryBuffer, mfplat.dll); + return (MFCreateMemoryBufferPtr)(cbMaxLength, ppBuffer); +} + +HRESULT MFLockDXGIDeviceManager(UINT* pResetToken, + IMFDXGIDeviceManager** ppManager) { + ENSURE_FUNCTION_PTR(MFLockDXGIDeviceManager, mfplat.dll); + return (MFLockDXGIDeviceManagerPtr)(pResetToken, ppManager); +} + +HRESULT MFUnlockDXGIDeviceManager() { + ENSURE_FUNCTION_PTR(MFUnlockDXGIDeviceManager, mfplat.dll); + return (MFUnlockDXGIDeviceManagerPtr)(); +} + +HRESULT MFPutWorkItem(DWORD dwQueue, IMFAsyncCallback* pCallback, + IUnknown* pState) { + ENSURE_FUNCTION_PTR(MFPutWorkItem, mfplat.dll); + return (MFPutWorkItemPtr)(dwQueue, pCallback, pState); +} + +} // end namespace wmf +} // end namespace mozilla |