EDMA Error: init: Failed to open /dev/mem: 'Operation not permitted'

hi all ,

I am working on android platform. I am trying to play a mp4 media file using OMX hardware plugins.we got
some problem ,the video is not playing. I am posting the few lines of CE debug messages and attaching complete CE debug messages.

4214.edmatest.txt
I//system/bin/mediaserver( 1707): @2,083,678us: [+0 T:0x00083d18 S:0x406174ac] ti.sdo.fc.edma3 - EDMA3_getResourceManager> Enter (alg=0x4061a000, scratchId=0)
I//system/bin/mediaserver( 1707): @2,084,788us: [+2 T:0x00083d18 S:0x406174ac] ti.sdo.fc.edma3 - EDMA3_getResourceManager> First time handle is requested, create Resource Manager object
I//system/bin/mediaserver( 1707): @2,085,026us: [+0 T:0x00083d18 S:0x40617484] ti.sdo.fc.edma3 - EDMA3_createResourceManagerObject> Enter


I//system/bin/mediaserver( 1707): EDMA Error: init: Failed to open /dev/mem: 'Operation not permitted'


I//system/bin/mediaserver( 1707): @2,096,554us: [+7 T:0x00083d18 S:0x40617484] ti.sdo.fc.edma3 - EDMA3_createResourceManagerObject> Failed to initialize ti.sdo.fc.linuxutils.edma module.
I//system/bin/mediaserver( 1707): @2,096,837us: [+7 T:0x00083d18 S:0x406174ac] ti.sdo.fc.edma3 - EDMA3_getResourceManager> Resource Manager object could not be created.5040.edmatest.txt
I//system/bin/mediaserver( 1707): @2,106,335us: [+7 T:0x00083d18 S:0x406174d4] ti.sdo.fc.ires.edma3Chan - IRESMAN_EDMA3CHAN_getHandles> Error obtaining Low level Resource Manager Handle.
I//system/bin/mediaserver( 1707): @2,106,578us: [+0 T:0x00083d18 S:0x406174d4] ti.sdo.fc.ires.edma3Chan - IRESMAN_EDMA3CHAN_getHandles> Exit (handle=NULL, status=IRES_ENORESOURCE.



I have run the application as root user(#su root). I have given full permission to /dev/mem but getting the same messages.

able to play the mp4 file using Gstreamer pipelines under the same.

can anyone help me whats going wrong incase of Openmax hardware plugins ?any help is appreciated.