How can I get slice information of encoder?

Hi,

     I found encoder has the structure: IH264ENC_MetaDataFormatNaluInfo.  But has no idea

where I can get this slice information.  Do I need to parse the bitstream externally to get the

slice information?  But it will waste A8 resource.  Or I can get these information more directly?

Could anyone give me some advices?  Thanks.

Sincerely,

James

Hi,

     I tried to set

staticParams->videnc2Params.outputDataMode = IVIDEO_SLICEMODE;
staticParams->videnc2Params.numOutputDataUnits = 1;

     But it appeared:

 [m3video] ERROR: XDM_UNSUPPORTEDPARAM = 14,
 [m3video] ERROR: XDM_FATALERROR = 15
 [m3video] ERROR: IH264ENC_IMPROPER_DATASYNC_SETTING = 19,

What's wrong with it?  Could anyone give me some advices?  Thanks.

Sincerely,

James

Hi James,

You need to operate the codec in DataSync mode which requires to be provided with some implemented call back functions from app.

More details on this can be found on the thread of http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/144961.aspx#530490

Though the codec is different, the mechanism is same.

Let me know if anything is not clear.

James,

If you want to generate streams with slices you have to set the below parameters

staticParams->sliceMode (This a part of extended create time parameters)

dynamicParams->sliceSize (This a part of extended run time parameters)

More details of this parameter can be found in the link

http://processors.wiki.ti.com/index.php/H.264_DM36x_Ver_2.1_Codec

If you are interested in low latency applications you can get some information from link below

http://processors.wiki.ti.com/index.php/DM36x_H.264_encoder_FAQ#How_to_use_DM36x_H.264_Encoder_Low_latency_call_back_APIs_for_achieving_slice_level_captue_and_encode.C2.A0.3F

Regarding the error, could you post the rest of encoder parameters?

Hi Adhithya,

As James is working with HDVICP2 and M3 based codec the following might be of more help and not confusing.

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/144961.aspx#530490

Regards,

Venu

Hi Venu,

I was not aware of the platform. No issues.

James,

you can ignore my earlier post

Hi Venu,

     I found in encoder cfg file, there were following setting messages:

InputDataMode            = 3        # Process entire frame. Only supported value is 3.
OutputDataMode           = 3        # Encode entire frame into a bitstream in single call. Only supported value is 3.

So, only supported value is 3.  Is it right?  So I can not set OutputDataMode = IVIDEO_SLICEMODE?

In fact, I try to set

    staticParams->videnc2Params.inputDataMode = IVIDEO_NUMROWS;
    staticParams->videnc2Params.outputDataMode = IVIDEO_SLICEMODE;
    staticParams->videnc2Params.numOutputDataUnits = 1;

in RDK 1.6.0.11 use case, then resulted:

 [m3video]  23987: ENCODE: Create in progress ... !!!
 [m3video]  24149: ENCODE: Creating CH0 of 1920 x 1080, pitch = (16384, 32768) [PROGRESSIVE] [TILED      ], bitrate = 1000 Kbps ...
 [m3video] 24151:!ERROR!:ENCLINK::links_m3video/iva_enc/encLink_h264.c:[178]::INTERNAL ERROR:-1
 [m3video] ALGCONTROL FAILED:CMD:1
 [m3video]
 [m3video] 24151:ERR::linkID:10000020::channelID:0::errorCode:-5::FileName:links_m3video/iva_enc/encLink_h264.c::linuNum:808::errorCondition:(algStatus == XDM_EOK)
 [m3video]  24153: Assertion @ Line: 681 in links_m3video/iva_enc/encLink_common.c: retVal == ENC_LINK_S_SUCCESS : failed !!

So, what's wrong with it?  Thanks.

Sincerely,

James