Type Alias openh264_sys2::SEncParamExt

pub type SEncParamExt = TagEncParamExt;

@brief SVC Encoding Parameters extention

Aliased Type

struct SEncParamExt {

    pub iUsageType: i32,
    pub iPicWidth: i32,
    pub iPicHeight: i32,
    pub iTargetBitrate: i32,
    pub iRCMode: i32,
    pub fMaxFrameRate: f32,
    pub iTemporalLayerNum: i32,
    pub iSpatialLayerNum: i32,
    pub sSpatialLayers: [SSpatialLayerConfig; 4],
    pub iComplexityMode: i32,
    pub uiIntraPeriod: u32,
    pub iNumRefFrame: i32,
    pub eSpsPpsIdStrategy: i32,
    pub bPrefixNalAddingCtrl: bool,
    pub bEnableSSEI: bool,
    pub bSimulcastAVC: bool,
    pub iPaddingFlag: i32,
    pub iEntropyCodingModeFlag: i32,
    pub bEnableFrameSkip: bool,
    pub iMaxBitrate: i32,
    pub iMaxQp: i32,
    pub iMinQp: i32,
    pub uiMaxNalSize: u32,
    pub bEnableLongTermReference: bool,
    pub iLTRRefNum: i32,
    pub iLtrMarkPeriod: u32,
    pub iMultipleThreadIdc: u16,
    pub bUseLoadBalancing: bool,
    pub iLoopFilterDisableIdc: i32,
    pub iLoopFilterAlphaC0Offset: i32,
    pub iLoopFilterBetaOffset: i32,
    pub bEnableDenoise: bool,
    pub bEnableBackgroundDetection: bool,
    pub bEnableAdaptiveQuant: bool,
    pub bEnableFrameCroppingFlag: bool,
    pub bEnableSceneChangeDetect: bool,
    pub bIsLosslessLink: bool,
}

Fields

iUsageType: i32

< same as in TagEncParamBase

iPicWidth: i32

< same as in TagEncParamBase

iPicHeight: i32

< same as in TagEncParamBase

iTargetBitrate: i32

< same as in TagEncParamBase

iRCMode: i32

< same as in TagEncParamBase

fMaxFrameRate: f32

< same as in TagEncParamBase

iTemporalLayerNum: i32

< temporal layer number, max temporal layer = 4

iSpatialLayerNum: i32

< spatial layer number,1<= iSpatialLayerNum <= MAX_SPATIAL_LAYER_NUM, MAX_SPATIAL_LAYER_NUM = 4

sSpatialLayers: [SSpatialLayerConfig; 4]

iComplexityMode: i32

uiIntraPeriod: u32

< period of Intra frame

iNumRefFrame: i32

< number of reference frame used

eSpsPpsIdStrategy: i32

< different stategy in adjust ID in SPS/PPS: 0- constant ID, 1-additional ID, 6-mapping and additional

bPrefixNalAddingCtrl: bool

< false:not use Prefix NAL; true: use Prefix NAL

bEnableSSEI: bool

< false:not use SSEI; true: use SSEI – TODO: planning to remove the interface of SSEI

bSimulcastAVC: bool

< (when encoding more than 1 spatial layer) false: use SVC syntax for higher layers; true: use Simulcast AVC

iPaddingFlag: i32

< 0:disable padding;1:padding

iEntropyCodingModeFlag: i32

< 0:CAVLC 1:CABAC.

bEnableFrameSkip: bool

< False: don’t skip frame even if VBV buffer overflow.True: allow skipping frames to keep the bitrate within limits

iMaxBitrate: i32

< the maximum bitrate, in unit of bps, set it to UNSPECIFIED_BIT_RATE if not needed

iMaxQp: i32

< the maximum QP encoder supports

iMinQp: i32

< the minmum QP encoder supports

uiMaxNalSize: u32

< the maximum NAL size. This value should be not 0 for dynamic slice mode

bEnableLongTermReference: bool

< 1: on, 0: off

iLTRRefNum: i32

< the number of LTR(long term reference),TODO: not supported to set it arbitrary yet

iLtrMarkPeriod: u32

< the LTR marked period that is used in feedback.

iMultipleThreadIdc: u16

< 1 # 0: auto(dynamic imp. internal encoder); 1: multiple threads imp. disabled; lager than 1: count number of threads;

bUseLoadBalancing: bool

< only used when uiSliceMode=1 or 3, will change slicing of a picture during the run-time of multi-thread encoding, so the result of each run may be different

iLoopFilterDisableIdc: i32

< 0: on, 1: off, 2: on except for slice boundaries

iLoopFilterAlphaC0Offset: i32

< AlphaOffset: valid range [-6, 6], default 0

iLoopFilterBetaOffset: i32

< BetaOffset: valid range [-6, 6], default 0

bEnableDenoise: bool

< denoise control

bEnableBackgroundDetection: bool

< background detection control //VAA_BACKGROUND_DETECTION //BGD cmd

bEnableAdaptiveQuant: bool

< adaptive quantization control

bEnableFrameCroppingFlag: bool

< enable frame cropping flag: TRUE always in application

bEnableSceneChangeDetect: bool

bIsLosslessLink: bool

< LTR advanced setting