NVIDIA DRIVE OS Linux SDK API Reference

5.1.15.2 Release
For Test and Development only

Detailed Description

H264 specific encoder picture params.

Sent on a per frame basis.

Definition at line 802 of file nvmedia_common_encode.h.

Collaboration diagram for NvMediaEncodePicParamsH264:

Data Fields

NvMediaEncodePicType pictureType
 Holds input picture type. More...
 
uint32_t encodePicFlags
 Holds bit-wise OR`ed encode pic flags. More...
 
uint32_t nextBFrames
 Secifies the number of B-frames that follow the current frame. More...
 
NvMediaEncodeRCParams rcParams
 Holds the rate control parameters from the current frame onward if the NVMEDIA_ENCODE_PIC_FLAG_RATECONTROL_CHANGE is set in the encodePicFlags. More...
 
uint32_t seiPayloadArrayCnt
 Holds the number of elements allocated in seiPayloadArray array. More...
 
NvMediaEncodeH264SEIPayloadseiPayloadArray
 Array of SEI payloads which will be inserted for this frame. More...
 
NvMediaEncodeExternalMeHintCountsPerBlocktype meHintCountsPerBlock [2]
 Holds the number of hint candidates per block per direction for the current frame. More...
 
union {
   NvMediaEncodeExternalMEHint *   meExternalHints
 
   uint8_t *   meHints
 
}; 
 Holds the pointer to ME external hints for the current frame. More...
 
uint32_t frameRateNum
 Holds the numerator for frame rate used for encoding in frames per second ( Frame rate = frameRateNum / frameRateDen ). More...
 
uint32_t frameRateDen
 Holds the numerator for frame rate used for encoding in frames per second ( Frame rate = frameRateNum / frameRateDen ). More...
 
uint32_t viewId
 Holds the viewId of current picture. More...
 

Field Documentation

◆ @39

union { ... }

Holds the pointer to ME external hints for the current frame.

The size of ME hint buffer must be equal to number of macroblocks multiplied by the total number of candidates per macroblock. The total number of candidates per MB per direction =

1*meHintCountsPerBlock[Lx].numCandsPerBlk16x16 +
2*meHintCountsPerBlock[Lx].numCandsPerBlk16x8 +
2*meHintCountsPerBlock[Lx].numCandsPerBlk8x16 +
4*meHintCountsPerBlock[Lx].numCandsPerBlk8x8

For frames using bidirectional ME, the total number of candidates for a single macroblock is the sum of the total number of candidates per MB for each direction (L0 and L1).

If no external ME hints are needed, set this field to NULL.

◆ encodePicFlags

uint32_t NvMediaEncodePicParamsH264::encodePicFlags

Holds bit-wise OR`ed encode pic flags.

See enum NvMediaEncodePicFlags.

Definition at line 807 of file nvmedia_common_encode.h.

◆ frameRateDen

uint32_t NvMediaEncodePicParamsH264::frameRateDen

Holds the numerator for frame rate used for encoding in frames per second ( Frame rate = frameRateNum / frameRateDen ).

Definition at line 856 of file nvmedia_common_encode.h.

◆ frameRateNum

uint32_t NvMediaEncodePicParamsH264::frameRateNum

Holds the numerator for frame rate used for encoding in frames per second ( Frame rate = frameRateNum / frameRateDen ).

Definition at line 853 of file nvmedia_common_encode.h.

◆ meExternalHints

NvMediaEncodeExternalMEHint* NvMediaEncodePicParamsH264::meExternalHints

Definition at line 848 of file nvmedia_common_encode.h.

◆ meHintCountsPerBlock

NvMediaEncodeExternalMeHintCountsPerBlocktype NvMediaEncodePicParamsH264::meHintCountsPerBlock[2]

Holds the number of hint candidates per block per direction for the current frame.

meHintCountsPerBlock[0] is for L0 predictors and meHintCountsPerBlock[1] is for L1 predictors. The candidate count in NvMediaEncodePicParamsH264 meHintCountsPerBlock[lx] must never exceed NvMediaEncodeInitializeParamsH264 maxMEHintCountsPerBlock[lx] provided during encoder intialization.

Definition at line 830 of file nvmedia_common_encode.h.

◆ meHints

uint8_t* NvMediaEncodePicParamsH264::meHints

Definition at line 849 of file nvmedia_common_encode.h.

◆ nextBFrames

uint32_t NvMediaEncodePicParamsH264::nextBFrames

Secifies the number of B-frames that follow the current frame.

This number can be set only for reference frames and the frames that follow the current frame must be nextBFrames count of B-frames. B-frames are supported only if the profile is greater than NVMEDIA_ENCODE_PROFILE_BASELINE and the maxNumRefFrames is set to 2. Set to zero if no B-frames are needed.

Definition at line 814 of file nvmedia_common_encode.h.

◆ pictureType

NvMediaEncodePicType NvMediaEncodePicParamsH264::pictureType

Holds input picture type.

Definition at line 804 of file nvmedia_common_encode.h.

◆ rcParams

NvMediaEncodeRCParams NvMediaEncodePicParamsH264::rcParams

Holds the rate control parameters from the current frame onward if the NVMEDIA_ENCODE_PIC_FLAG_RATECONTROL_CHANGE is set in the encodePicFlags.

Please note that the rateControlMode cannot be changed on a per frame basis only the associated rate control parameters.

Definition at line 819 of file nvmedia_common_encode.h.

◆ seiPayloadArray

NvMediaEncodeH264SEIPayload* NvMediaEncodePicParamsH264::seiPayloadArray

Array of SEI payloads which will be inserted for this frame.

Definition at line 824 of file nvmedia_common_encode.h.

◆ seiPayloadArrayCnt

uint32_t NvMediaEncodePicParamsH264::seiPayloadArrayCnt

Holds the number of elements allocated in seiPayloadArray array.

Set to 0 if no SEI messages are needed

Definition at line 822 of file nvmedia_common_encode.h.

◆ viewId

uint32_t NvMediaEncodePicParamsH264::viewId

Holds the viewId of current picture.

Definition at line 858 of file nvmedia_common_encode.h.


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