Embedded Development DaVinci---8148 DSP in the dsp_drv.c of the ProcessData () and the lower edge stripe problem in the algorithm

(1) Cause of the problem

DSP in the ALGLINK_PRIV.C gray processing found that the following stripes, and later found that the cache is not in time to write into memory problems

(2) Workaround

for (frameid=0; frameid<framelist.numframes; frameid++)
{
Pframe = Framelist.frames[frameid];

if (Pframe->channelnum >= pobj->inqueinfo.numch)
Continue

Do SW OSD
if (POBJ->CREATEARGS.ENABLEOSDALG)
{
Alglink_osdalgprocessframe (&pobj->osdalg, pframe);
}
memset (Pframe->addr[0][1], 0x80, 1920*1080/2);//add by PKF 11-4 128
CACHE_WB (Pframe->addr[0][0], 1920*1080, cache_type_all,true);
CACHE_WB (Pframe->addr[0][1], 1920*1080/2, cache_type_all,true);//add write Alse cache_in ()
memset (Pframe->addr[1][1], 0x80, 1920*1080/4);
}

Http://www.deyisupport.com/question_answer/dsp_arm/c6000_multicore/f/53/p/21756/132424.aspx

Http://www.deyisupport.com/question_answer/dsp_arm/davinci_digital_media_processors/f/39/t/22729.aspx

Embedded Development DaVinci---8148 DSP in the dsp_drv.c of the ProcessData () and the lower edge stripe problem in the algorithm