Media (Intel® Video Processing Library, Intel Media SDK)
Access community support with transcoding, decoding, and encoding in applications using media tools like Intel® oneAPI Video Processing Library and Intel® Media SDK
Announcements
The Intel Media SDK project is no longer active. For continued support and access to new features, Intel Media SDK users are encouraged to read the transition guide on upgrading from Intel® Media SDK to Intel® Video Processing Library (VPL), and to move to VPL as soon as possible.
For more information, see the VPL website.
3058 Discussions

Do I have to use video memory if I want HW accelerated VPP operation?

Zheng_L_
Beginner
‎07-11-2013 08:24 PM
291 Views

the doc in SDK said,"The SDK goes through the Microsoft* DirectX* infrastructure (Direct3D9 DXVA2 or Direct3D11 Video API) for hardware acceleration", is it means I must set "MFX_IOPATTERN_IN_VIDEO_MEMORY" & "MFX_IOPATTERN_OUT_VIDEO_MEMORY" to the "IOPattern" parameter,and I had to allocate DirectX surface by myself? If I use "MFX_IOPATTERN_IN/OUT_SYSTEM_MEMORY",the sw version library will be used,is it?

0 Kudos

Link Copied

4 Replies
Petter_L_Intel
Employee
‎07-12-2013 10:10 AM
291 Views

Hi Zheng,

The selected "IOPattern" has no connection to if the workload is executed on HW or SW. "IOPattern" just indicates where the input or output surfaces are located, which is either in D3D memory (preferable when using HW acceleration) or system memory (preferable when using SW). Either "IOPattern" type can be used with HW and SW.

HW or SW execution selection is selected using the parameter "mfxImpl".

Regards,
Petter 

0 Kudos
Copy link
Zheng_L_
Beginner
‎07-13-2013 03:18 AM
291 Views

Petter Larsson (Intel) wrote:

Hi Zheng,

The selected "IOPattern" has no connection to if the workload is executed on HW or SW. "IOPattern" just indicates where the input or output surfaces are located, which is either in D3D memory (preferable when using HW acceleration) or system memory (preferable when using SW). Either "IOPattern" type can be used with HW and SW.

HW or SW execution selection is selected using the parameter "mfxImpl".

Regards,
Petter 

Did you means I use system memory as input & output surface,the driver of intel can put the data in system memory to D3D memory automatically, and do vpp processing with hw accelerated,and also readout the result from D3D memory to system memory automatically?

0 Kudos
Copy link
Petter_L_Intel
Employee
‎07-15-2013 03:16 PM
291 Views

Hi Zheng,

Correct. If the input surface is on system memory and HW codec is selected, then Media SDK will automatically perform copy from system memory to D3D memory before scheduling the task.The same case is true for output surfaces.

Conversely, if input D3D surface and a SW codec is used, then Media SDK will copy data from D3D surface to system memory before scheduling the task.

Regards,
Petter 

0 Kudos
Copy link
Zheng_L_
Beginner
‎07-15-2013 06:17 PM
291 Views

Petter Larsson (Intel) wrote:

Hi Zheng,

Correct. If the input surface is on system memory and HW codec is selected, then Media SDK will automatically perform copy from system memory to D3D memory before scheduling the task.The same case is true for output surfaces.

Conversely, if input D3D surface and a SW codec is used, then Media SDK will copy data from D3D surface to system memory before scheduling the task.

Regards,
Petter 

Thanks! Peter

0 Kudos
Copy link
Reply

Community support is provided during standard business hours (Monday to Friday 7AM - 5PM PST). Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.