NVIDIA DRIVE 5.0 Linux SDK API Reference

5.0.5.0 Release

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NvMediaEncodePicParamsH264 Struct Reference

Detailed Description

H264 specific encoder picture params.

Sent on a per frame basis.

Definition at line 2125 of file nvmedia_common.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...
 
NvMediaEncodeExternalMEHintmeExternalHints
 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...
 

Field Documentation

uint32_t NvMediaEncodePicParamsH264::encodePicFlags

Holds bit-wise OR`ed encode pic flags.

See NvMediaEncodePicFlags enum.

Definition at line 2129 of file nvmedia_common.h.

uint32_t NvMediaEncodePicParamsH264::frameRateDen

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

Definition at line 2174 of file nvmedia_common.h.

uint32_t NvMediaEncodePicParamsH264::frameRateNum

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

Definition at line 2171 of file nvmedia_common.h.

NvMediaEncodeExternalMEHint* NvMediaEncodePicParamsH264::meExternalHints

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.

Definition at line 2168 of file nvmedia_common.h.

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 2152 of file nvmedia_common.h.

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 2136 of file nvmedia_common.h.

NvMediaEncodePicType NvMediaEncodePicParamsH264::pictureType

Holds input picture type.

Definition at line 2127 of file nvmedia_common.h.

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 2141 of file nvmedia_common.h.

NvMediaEncodeH264SEIPayload* NvMediaEncodePicParamsH264::seiPayloadArray

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

Definition at line 2146 of file nvmedia_common.h.

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 2144 of file nvmedia_common.h.


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