Linux/TDA2EVM5777: How to use the "cmem" buffer to do encoder ?

user4643736

Part Number: TDA2EVM5777

Tool/software: Linux

Hello ,

I want alloc continuous physical address to do encoder in PSDK 3.03, And to use cmem as input buffer for encode, i add the below code in videnc2test.c :

enc->buf.ybuff = CMEM_alloc2(CMEM_CMABLOCKID, enc->buf.sizey, &params);
enc->buf.fdy = CMEM_export_dmabuf(enc->buf.ybuff);

When i rebuild and run videnc2test, get some error trace form kernel:

../git/libdce.c:965: process ERROR: Failed eError == DCE_EOK error val -5videnc2test.c:1467: main error: Non-fatal err=0, h264enc_outArgs->videnc2OutArgs.extendedError=00000000
[ 39.528607] rpmsg_rpc rpmsg-dce: error from rproc_pa_to_da, rproc = f68d8c00, pa = 0x00000000bc200000 ret = -22
[ 39.556534] rpmsg_rpc rpmsg-dce: unwinding UVA to RDA translations! translation = 0
[ 39.564269] rpmsg_rpc rpmsg-dce: failed to translate all pointers for remote core!
MmRpc_call: Error: write failed

Does the encoder(IPU) support continuous physical mem which allocated from MPU side?

Regards,

Sid

over 8 years ago

0 Ramprasad over 8 years ago

TI__Mastermind 30480 points

Hi Sid,
For IPUMM, application can not use cmem.
IPUMM is designed to use TILER for its input/output buffers and all paramters passed for codec creations.

Thanks
Ram

0 user4643736 over 8 years ago in reply to Ramprasad

Intellectual 920 points

Hi Ram,

Thanks for your reply.

I found out if use OSA memroy as input buffers (from VSDK ), the IPUMM still can do encoder.

Is there anyway to make IPUMM use the cmem memory.

Thanks & Best Regards.

Sid

0 Ramprasad over 8 years ago in reply to user4643736

TI__Mastermind 30480 points

Hi Sid,
In vision-sdk also it is mapped to IPUMM buffers are mapped to TILER.
cmem does't seem to work there also. Can you give few details of this requirement of using cmem for encoder?

Ramprasad

0 user4643736 over 8 years ago in reply to Ramprasad

Intellectual 920 points

Hi Ram,

   Thank you for the quick response.

I want manage the encoder's input bufferes. There need memcpy captured buffer，then do encoder. cmem bufferes are more effective to memcpy.

If cmem not suit for encoder,then i will use OSA SR1 frame buffer as input buffer.

Thanks & Best Regards.

Sid

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Linux/TDA2EVM5777: How to use the "cmem" buffer to do encoder ?