NvMediaEncodeMVBufferHeader Struct Reference

Detailed Description

Header format that defines motion vector output.

This header will be present in the encoded bitstream output at an offset defined by NvMediaEncodeOutputExtradata::MVBufferDumpStartOffset if NvMediaEncodeOutputExtradata::bMVbufferdump is set. The motion vector output will immediately follow this header if buffersize is non-zero.

Note

Motion Vector output format in memory (v2.0):

<Memory Address - low>
|-----------------------------| <- MVBufferDumpStartOffset
| NvMediaEncodeMVBufferHeader |
|-----------------------------|
|     NvMediaEncodeMVData 0   |
|-----------------------------|
|     NvMediaEncodeMVData 1   |
|-----------------------------|
                .
                .
<Memory Address - high>
 
Number of NvMediaEncodeMVData =
    (NvMediaEncodeMVBufferHeader.width_in_blocksize *
     NvMediaEncodeMVBufferHeader.height_in_blocksize)

To enable v2.0 format of the MV Buffer dump, NVMEDIA_ENCODE_CONFIG_H264_ENABLE_MV_BUFFER_DUMP_V2 should be bit-ORd in NvMediaEncodeConfigH264::features

Definition at line 171 of file nvmedia_iep_output_extradata.h.

Data Fields
uint32_t	MagicNum
	Used to verify the integrity of the header. More...
uint32_t	buffersize
	Size of motion vector output (excluding header size), i.e., the size of MV data in the bitstream post the header. More...
uint16_t	blocksize
	Macro Block size. More...
uint16_t	width_in_blocksize
	Input frame width in terms of blocksize. More...
uint16_t	height_in_blocksize
	Input frame height in terms of blocksize. More...
uint16_t	reserved
	Reserved. More...

Field Documentation

blocksize

uint16_t NvMediaEncodeMVBufferHeader::blocksize

Macro Block size.

Definition at line 180 of file nvmedia_iep_output_extradata.h.

buffersize

uint32_t NvMediaEncodeMVBufferHeader::buffersize

Size of motion vector output (excluding header size), i.e., the size of MV data in the bitstream post the header.

Definition at line 178 of file nvmedia_iep_output_extradata.h.

height_in_blocksize

uint16_t NvMediaEncodeMVBufferHeader::height_in_blocksize

Input frame height in terms of blocksize.

Definition at line 184 of file nvmedia_iep_output_extradata.h.

MagicNum

uint32_t NvMediaEncodeMVBufferHeader::MagicNum

Used to verify the integrity of the header.

IEP will set this to MV_BUFFER_HEADER to indicate that the header is valid.

Definition at line 175 of file nvmedia_iep_output_extradata.h.

reserved

uint16_t NvMediaEncodeMVBufferHeader::reserved

Reserved.

Definition at line 186 of file nvmedia_iep_output_extradata.h.

width_in_blocksize

uint16_t NvMediaEncodeMVBufferHeader::width_in_blocksize

Input frame width in terms of blocksize.

Definition at line 182 of file nvmedia_iep_output_extradata.h.

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The documentation for this struct was generated from the following file:

• nvmedia_iep_output_extradata.h