12.9. VDEC¶
【调试信息】
# cat /proc/cvitek/vdec
Module: [VDEC] System Build Time [#1 SMP PREEMPT Sat Jan 23 02:50:26 CST 2021]
VdecMaxChnNum: 70 MiniBufMode: 0 enVdecVBSource: 0 ParallelMode: 0
MaxPicWidth: 4096 MaxPicHeight: 2160 MaxSliceNum: 200 VdhMsgNum: 0 VdhBinSize: 0 VdhExtMemLevel: 0
SupportProgressive: 0 DynamicAllocate: 0 CapStrategy: 0
----- CHN COMM ATTR & PARAMS --------------------------------------
ID: 0 TYPE: H265 MaxW: 4096 MaxH: 2304 Width: 1920 Height: 1080 Stride: 1920 PixelFormat: 13 PTS: 0 PA: 0x126568000
StrInputMode: FRAME/NOBLOCK StrBufSize: 9437184 FrmBufSize: 0 FrmBufCnt: 3 TmvBufSize: 0
ID: 0 DispNum: 2 DispMode: PLAYBACK SetUserPic: N EnUserPic: N Rotation: 0 PicPoolId: -1 TmvPoolId: -1 STATE: START
----- CHN VIDEO ATTR & PARAMS -------------------------------------
ID: 0 VfmwID: 0 RefNum: 0 TemporalMvp: N ErrThr: 0 DecMode: IPB OutPutOrder: DISP Compress: NONE VideoFormat: 0 MaxVPS: 0 MaxSPS: 0 MaxPPS: 0 MaxSlice: 200
----- CHN PICTURE ATTR & PARAMS---------------------------------
ID: 0 PixelFormat: 0 Alpha: 0
----- CVITEK Debug Level STATE ----------------------------------------
VdecDebugMask: 0x0 VdecStartFrmIdx: 0 VdecEndFrmIdx: 0 VdecDumpPath:
【调试信息分析】
记录当前解码通道的使用状况及其属性配置。可用于检查属性配置以及当前解码通道统计状态。
【参数说明】
参数 |
描述 |
|
|---|---|---|
MODULEPARAM |
VdecMaxChnNum |
Maximum number of decoding channels supported by the VDEC |
MiniBufMode |
Whether the stream buffer reduction mode is used 0: unused 1: used (the reduction mode is valid only when streams are decoded by frame) |
|
enVdecVBSource |
Mode of allocating the VDEC video buffer (VB) 1: module VB 2: private VB 3: user VB |
|
ParallelMode |
VDH decoding mode 0: non-parallel mode 1: parallel mode |
|
MaxPicWidth |
Maximum width supported for video decoding |
|
MaxPicHeight |
Maximum height supported for video decoding |
|
MaxSliceNum |
Maximum number of slices supported for video decoding |
|
VdhMsgNum |
Number of VDH message pools |
|
VdhBinSize |
Size of the buffer for storing binary data of VDH decoding |
|
VdhExtMemLevel |
Off-processor memory allocation level for VDH decoding |
|
MaxJpegeWidth |
Maximum width of an image to be decoded |
|
MaxJpegeHeight |
Maximum height of an image to be decoded |
|
SupportProgressive |
Whether the progressive format is supported 0: no 1: yes |
|
DynamicAllocate |
Buffer allocation mode when the progressive format is supported 0: static allocation 1: dynamic allocation |
|
CapStrategy |
Capability strategy for the maximum width and height of a decoded image 0: capability strategy based on the module 1: capability strategy based on the channel |
|
CHNCOMMATTR &PARAMS |
ID |
VDEC channel ID |
TYPE |
VDEC channel type PT_H264 PT_H265 PT_MJPEG PT_JPEG |
|
MaxW |
Configured maximum width of a decoded image |
|
MaxH |
Configured maximum height of a decoded image |
|
Width |
Width of a decoded image |
|
Height |
Height of a decoded image |
|
StrmInputMode |
Stream transmission mode of the VDEC channel The modes can be classified into two types: FRAME, STREAM, and COMPAT: transmit by frame, stream, and, in compatible mode, respectively BLOCK, NOBLOCK and TIMEOUT: streams in block, non-block and timeout mode |
|
StrBufSize |
Stream buffer size |
|
FrmBufSize |
Size of frame buffers, valid only in private VB mode |
|
FrmBufCnt |
Number of frame buffers, valid only in private VB mode |
|
TmvBufSize |
TMV buffer size. This parameter is valid only in private VB mode. |
|
DispNum |
Number of displayed frames Value range: [0, 16] |
|
DispMode |
Display mode Value range: PLAYBACK and PREVIEW |
|
SetUserPic |
Whether to set user images |
|
EnUserPic |
Whether to enable user images |
|
Rotation |
Rotated angle of the VDEC image |
|
PicPoolId |
VB pool ID of the frame buffer, valid only in private VB and user VB modes |
|
TmvPoolId |
VB pool ID of the Tmv, valid only in private VB and user VB modes |
|
STATE |
Whether the VDEC channel starts to receive streams START: The channel starts to receive streams. STOP: The channel stops receiving streams. |
|
CHN
VIDEO
ATTR &
PARAMS
|
ID |
VDEC channel ID |
VfmwID |
Video firmware (VFMW) channel ID |
|
RefNum |
Number of reference frames Value range: [0, 16] |
|
TemporalMvp |
Whether to support time-domain motion vector prediction |
|
ErrThr |
Stream error rate threshold |
|
DecMode |
Decoding mode |
|
OutPutOrder |
Output sequence of a decoded image |
|
Compress |
Whether the decoded output image can be compressed |
|
VideoFormat |
Data format of images to be decoded |
|
MaxVPS |
Maximum number of supported VPSs, only H.265 decoding is valid |
|
MaxSPS |
Maximum number of supported SPSs |
|
MaxPPS |
Maximum number of supported PPSs |
|
MaxSlice |
Maximum number of supported slices |
|
CHN image
ATTR &
PARAMS
|
ID |
VDEC channel ID |
PixelFormat |
Output format of JPEG images |
|
Alpha |
Global alpha value of JPEG images in ARGB format |
|
CVITEK DEBUG STATE |
VdecDebugMask |
The debug mask of middleware |
VdecStartFrmIdx |
The start frame of middleware debugging |
|
VdecEndFrmIdx |
The end frame of middleware debugging |
|
VdecDumpPath |
The Bitstream src dump path |