Facing error in capture encode demo for Netraboard

Hi Vimal,

I am using 0xb3d00000 address which is mentioned as Shared Region between Host and MC-HDVICP2 and MC-HDVPSS,

 used to allocate all video buffers (IPC_SR_FRAME_BUFFERS) in memory map.

I crosschecked it by keeping dumps on m3 side and got the 0xb3d00000 address when I allocate buffers using omx_allocatebuffer.

So I used same address for omx_usebuffer.

buffers are getting allocated and I am able to read data in to the buffers from the .yuv file.

I am using like this:

for (i = 0; i < pAppData->encILComp->inPortParams->nBufferCountActual; i++)
{

  pBuffInput[i] = allocate_shared_memory(pAppData->encILComp->inPortParams->nBufferSize);
  printf("pBuffInput is %p",pBuffInput[i]);
 if(NULL == pBuffInput[i])
 {
  printf("Not able to allocate input memory! \n");
  return 0;
 }

 pBuffInPhy[i] = get_dsp_address(pBuffInput[i]);
 printf("pBuffInPhy[%d] is %d \t  %p\n",i,pBuffInPhy);

}

for (i = 0; i < pAppData->encILComp->inPortParams->nBufferCountActual; i++)
  {
 eError = OMX_UseBuffer(pAppData->pEncHandle,
                                 &pAppData->encILComp->inPortParams->pInBuff[i],
                                 OMX_VIDENC_INPUT_PORT,
                                 pAppData->encILComp,
                                 pAppData->encILComp->inPortParams->nBufferSize,
                                   pBuffInPhy[i]);

       if (eError != OMX_ErrorNone)
       {
              printf ("Error in OMX_useBuffer()- Input Port State set : %s \n",
                     IL_ClientErrorToStr (eError));
              goto EXIT;
       }
  }

please suggest me if there is anything to check.

Regards,

Vaishnavi.

Vaishnavi,

For OMX_Usebuffer you can not use physical buffer. It has to be SR pointer. You can check, when you do alloc buffer, you do't get physical address. You get vertual address, which is translated to SR in DOMX A8 side, and on M3 SR to physical address translation happens. So If you pass physical address, this translation will go wrong. Also when you allocate buffers for physical address, how do shared region know that someone is allocating buffers from it. It has to be allocated from shared region through Memory_alloc apis and not malloc / or phisycal alloc.

Regards

Vimal

Hi Vimal,

I am  using mmap to allocate buffers.I will get arm virtual ptr.

I am conerting this arm virtual pointer to dsp vistual ptr using below function:

char *get_dsp_address(char *arm_virtual_ptr )
{
   unsigned int arm_base_addr;
   unsigned int dsp_base_addr;
   char * dsp_virt_ptr = NULL;

   if((char*)shared_buff_info.virt_base != NULL)
   {
      arm_base_addr = shared_buff_info.virt_base;
      dsp_base_addr = shared_buff_info.phy_base;
      dsp_virt_ptr = (char*) (((unsigned int)arm_virtual_ptr-arm_base_addr) + dsp_base_addr);

      printf("arm_virt_ptr: 0x%8.8x\n", arm_virtual_ptr);
      printf("dsp_virt_ptr: 0x%8.8x\n", dsp_virt_ptr);
   }
   else
   {
      printf("Setup the shared memory first!!!\n");
   }
printf("get_dsp_address is done and dsp_virt_ptr : 0x%8.8x\n", dsp_virt_ptr);
   return (char*)dsp_virt_ptr;
}

This dsp_virt_ptr I am using as SR ptr and passing in omx_usebuffer

In the same manner I am again convertnig back pbuffer->pbuffer to arm address using get_arm_address()  and

then I am using in ilclient while fread and fwrite

char *get_arm_address(char *dsp_phy_ptr )
{

   unsigned int arm_base_addr;
   unsigned int dsp_base_addr;
   char * arm_virt_ptr = NULL;

   if((char*)shared_buff_info.virt_base != NULL)
   {
      arm_base_addr = shared_buff_info.virt_base;
      dsp_base_addr = shared_buff_info.phy_base;
      arm_virt_ptr = (char*) (((unsigned int)dsp_phy_ptr-dsp_base_addr) + arm_base_addr);

       }
   else
   {
      printf("Setup the shared memory first!!!\n");
   }

   return (char*)arm_virt_ptr;
}

I have done same thing in omx_05_00_00_11 package for vc3 demo(decoder) and tested on Netra board itself. It is working fine.
Please suggest me if there is anything to check.

Thanks in advance,

Vaishnavi

Vaishanavi,

With 5.11 package, we did not had non tunnel support, so usebuffer/allocbuffer was not supported.

For allocating buffers

srHeap = SharedRegion_getHeap(region); //region is 2 in ezsdk

virtAddr = (UInt32)Memory_alloc((IHeap_Handle)srHeap , nbytes, 0, NULL);

char *srPtr = (char*) SharedRegion_getSRPtr ((Ptr) virtAddr, region);

This SR ptr should be given to omx_usebuffer call.

Regards

Vimal

Vaishnavi,

In the earlier post I quotes as SR ptr to be used, that is actually porting poinetr. on linux virtAddr should be used for OMX_Usebuffer. DOMX will translate this to SR and give it to M3.

Regards

Vimal