HW Init/Close Decode Memory leak with MSDK 2013, MSDK 2013 R2

Andrey_K_ · ‎09-04-2013

I found that init HW decoding and then closing it, lead to memory leak. I saw ealier posts about leaks, but not sure if it have the same nature.

Here is code to reproduce issue:

[cpp]

static size_t GetProcessHeapSize(){
   auto heap = GetProcessHeap();
   if(!HeapLock(heap)){
       return -1;
   }
   PROCESS_HEAP_ENTRY entry = PROCESS_HEAP_ENTRY();
   size_t size = 0;
   while(HeapWalk(heap, &entry)){
       if(entry.wFlags & PROCESS_HEAP_ENTRY_BUSY){
           size += entry.cbData;
       }
   }
   HeapUnlock(heap);
   return size;
}

static void MemLeak() {
   mfxStatus sts = MFX_ERR_NONE;
   mfxVersion ver = {4, 1};
   mfxSession ses = mfxSession();
   sts = MFXInit(MFX_IMPL_HARDWARE, &ver, &ses); // didn't reveal for software impl

   mfxVideoParam cfg = mfxVideoParam();
   cfg.mfx.CodecId = MFX_CODEC_AVC;
   cfg.AsyncDepth = 1;
   sts = MFXVideoDECODE_Init(ses, &cfg); // returns MFX_ERR_INVALID_VIDEO_PARAM
   sts = MFXVideoDECODE_Close(ses); // returns MFX_ERR_NOT_INITIALIZED
   sts = MFXClose(ses);
}

static void MemLeakTest() {
   auto started = GetTickCount();
   auto counter = 0;
   while(true){
       MemLeak();
       auto ellapsed = GetTickCount() - started;
       if(ellapsed > 1000){
           printf("heap size: %d Kb, cnt=%d\n", (int)(GetProcessHeapSize() / 1024), counter);
           started = GetTickCount();
       }
       ++counter;
   }
}

[/cpp]

This issue doesn't depend on whether MFXVideoDECODE_Init was succesfull or not. And it doesn't appear for SW implementation.

sys info:

[plain]

Intel Media SDK System Analyzer (64 bit)

The following versions of Media SDK API are supported by platform/driver:

   Version   Target   Supported   Dec   Enc
   1.0   HW   Yes       X   X
   1.0   SW   Yes       X   X
   1.1   HW   Yes       X   X
   1.1   SW   Yes       X   X
   1.3   HW   Yes       X   X
   1.3   SW   Yes       X   X
   1.4   HW   Yes       X   X
   1.4   SW   Yes       X   X
   1.5   HW   No
   1.5   SW   Yes       X   X
   1.6   HW   No
   1.6   SW   Yes       X   X
   1.7   HW   No
   1.7   SW   Yes       X   X

Graphics Devices:
   Name                                         Version             State
   Intel(R) HD Graphics 3000                    9.17.10.3223        Active

System info:
   CPU:   Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
   OS:   Microsoft Windows 8 Pro
   Arch:   64-bit

Installed Media SDK packages (be patient...processing takes some time):
   Intel® Media SDK 2013 R2 (x64)

[/plain]

It is also reproduced with Intel Media SDK 2013 (x64) in 32 and 64 mode.

Are there any workarounds to prevent these leaks?

BTW why imsdk ver after 1.4 are not support HW acceleration, as I intalled last intel HD graphics (15.28.18) and directx11 is up to date?

Anthony_P_Intel · ‎09-04-2013

Hi,

This appears to be a memory leak in the graphics driver. I'll make sure the driver team is aware of your sighting.

The Intel(R) 2nd Generation Core processors (with Intel(R) HD Graphics 3000 adapters) only support hardware features of (up to) API 1.4. Newer hardware supports new features.

skyrec · ‎09-09-2013

Hi, I've tried that piece of source what Andrey provided, but with VPP procedure. The memory leaking I got will faster than only decoding procedure. The following pseudo code is what I took at home, I hope this information will help to you. Regards, skyrec void RepeatProcedure() { mfxVersion ver = {4, 1}; mfxSession ses = mfxSession(); MFXInit(MFX_IMPL_HARDWARE, &ver, ses) // create DirectX11 device and context // CComPtr, CComPtr MFXVideoCORE_SetHandle(MFX_HANDLE_D3D11_DEVICE) MFXVideoCORE_SetFrameAllocator() MFXVideoDECODE_DecodeHeader() MFXVideoDECODE_QueryIOSurf() MFXVideoVPP_QueryIOSurf() // adopts D3D11_MEMORY // allocate surface pool for Decoder // allocate surface pool for VPP MFXVideoDECODE_Init() MFXVideoVPP_Init() do { // retrieve bit-streaming from file MFXVideoDECODE_DecodeFrameAsync() MFXVideoVPP_RunFrameVPPAsync() MFXVideoCORE_SyncOperation() // video rendering } while (true); MFXVideoVPP_Close() MFXVideoDECODE_Close() MFXClose(ses) // release surface pool which used by Decoder // release surface pool which used by VPP } -----8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<---- Intel Media SDK System Analyzer (64 bit) The following versions of Media SDK API are supported by platform/driver: Version Target Supported Dec Enc 1.0 HW Yes X X 1.0 SW Yes X X 1.1 HW Yes X X 1.1 SW Yes X X 1.3 HW Yes X X 1.3 SW Yes X X 1.4 HW Yes X X 1.4 SW Yes X X 1.5 HW Yes X X 1.5 SW Yes X X 1.6 HW Yes X X 1.6 SW Yes X X 1.7 HW No 1.7 SW Yes X X Graphics Devices: Name Version State Intel(R) HD Graphics 4000 9.18.10.3165 Active System info: CPU: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz OS: Microsoft Windows 8 Pro Arch: 64-bit Package: Media SDK 2013 R2 (x64) Intel(R) HD Graphics 4000 9.18.10.3165 Active System info: CPU: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz OS: Microsoft Windows 8 Pro Arch: 64-bit