Linux/PROCESSOR-SDK-DRA7X: How to use the cmem buffer to do decoder

tuen

Tool/software: Linux

psdk:3.04 board:dra7xx

Hi, we modify the ti demo viddec3test(use cmem buffer and use API omap_bo_from_dmabuf to construct CMEM buffer's omap_bo.) , however decoder is failed and print err below:

root@dra7xx-evm:/datafs/decoder_test#./viddec3test -s 32:1280x720 ./BSD.mp4 --fps 30

vmem_fd:5
decoder_open
0x2efc0: Opening Display..
Forcing playback rate at 30 fps.
[14542.203403] EDID block is all zeroes
using 1 connectors, 1280x720 display, multiplanar: 1
g_cur_phy_addr:9f000000  size:3686400 bo:304c8
Setting mode 1280x720 on connector 32, crtc 34
0x2efc0: Opening Demuxer..
[h264 @ 0x313b0] no frame!
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './BSD.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isom
    creation_time   : 2000-01-01 00:00:06
  Duration: 00:05:01.00, start: 0.000000, bitrate: 17885 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 17884 kb/s, 30 fps, 30 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2000-01-01 00:00:06
      encoder         : JVT/AVC Coding
initializing bitstream filter
0x2efc0: infile=./BSD.mp4, width=1280, height=720
0x2efc0: padded_width=1408, padded_height=816, num_buffers=12
g_cur_phy_addr:9f384000  size:3686400 bo:31ec0
Page flip: frame=12, sec=0, usec=0, remaining=0
g_cur_phy_addr:9f708000  size:1148928 bo:38bb0
g_cur_phy_addr:9f821000  size:574464 bo:38bf0
g_cur_phy_addr:9f8ae000  size:114892[14542.325514] omap-iommu 55082000.mmu: 55082000.mmu: version 2.1
8bo:38c88
g_cur_phy_addr:9f9c7000  size:574464 bo:38cc8
g_cur_hy_addr:9fa54000  size:1148928 bo:38d60
g_cur_phy_addr:9fb6d000  size:574464 bo:38da0
g_cur_phy_addr:9fbfa000  size:1148928 bo:35d38
g_cur_phy_addr:9fd13000  size:574464 bo:35d78
g_cur_phy_addr:9fda0000  size:1148928 bo:35e10
g_cur_phy_addr:9feb9000  size:574464 bo:35e50
g_cur_phy_addr:9ff46000  size:1148928 bo:35ee8
g_cur_phy_addr:a005f000  size:574464 bo:35f28
g_cur_phy_addr:a00ec000  size:1148928 bo:35fc0
g_cur_phy_addr:a0205000  size:574464 bo:35990
g_cur_phy_addr:a0292000  size:1148928 bo:35a28
g_cur_phy_addr:a03ab000  size:574464 bo:35a68
g_cur_phy_addr:a0438000  size:1148928 bo:35b00
g_cur_phy_addr:a0551000  size:574464 bo:35b40
g_cur_phy_addr:a05de000  size:1148928 bo:35bd8
g_cur_phy_addr:a06f7000  size:574464 bo:35c18
g_cur_phy_addr:a0784000  size:1148928 bo:36880
g_cur_phy_addr:a089d000  size:574464 bo:368c0
g_cur_phy_addr:a092a000  size:1148928 bo:36958
g_cur_phy_addr:a0a43000  size:574464 bo:36998
g_cur_phy_addr:a0ad0000  input_sz:921600 bo:36a40
0x2efc0: Opening Engine..
542.384600] rpmsg_rpc rpmsg-dce: error from rproc_pa_to_da, rproc = d393d800, pa = 0x00000000a0ad0000 ret = -22
idsplayBufsMode: 1
[14542.453286] rpmsg_rpc rpmsg-dce: unwinding UVA to RDA translations! translation = 0
[14542.462682] rpmsg_rpc rpmsg-dce: failed to translate all pointers for remote core!
mMRpc_call: Error: write failed
ERROR:decoder_process:696: 0x2ef0: process returned error: -5
ERROR:decoder_process:697: 0x2efc0: extendedError: 00000000
../git/libdce.c:965:    process ERROR: Failed eError == DCE_EOK error val -5root@dra7xx-evm:/datafs/decoder_test#

over 7 years ago

0 Ramprasad over 7 years ago

TI__Mastermind 30480 points

Hi tuen,
IPUMM software for video encode and decodign works only with TILER memory which is allocated using omap_bo. IPUMM can not work with cmem.

0 tuen over 7 years ago in reply to Ramprasad

Prodigy 210 points

Hi Ramprasad:

DMA need physical address access, so we want to use cmem to do IVA. from thread https://e2e.ti.com/support/arm/automotive_processors/f/1021/t/671955?tisearch=e2e-sitesearch&keymatch=encoder%20cmem

it seem that OSA memeory in VISION SDK can do IVA, so is it possible that we port OSA part to PSDK?

0 Ramprasad over 7 years ago in reply to tuen

TI__Mastermind 30480 points

Hi Tuen,
OSA was for vision-sdk for OS abstraction. What is the use case /requirement to use cmem for IVAHD ?

0 tuen over 7 years ago in reply to Ramprasad

Prodigy 210 points

Hi Ramprasad，
for example:
1.a process just can create 5(max) channel encoder. otherwise VIDENC2_create err. if we receive more than 5 channel camera data, we should use multi-process to do encoder, and should share buffer with othrer process(by share physical address ,then use physical address to construct dmabuffd and so on ). so if use TILER memory which is allocated using omap_bo , we can not get the physical address to constuct share-buffer, and can not do more than 5 channel encoder.

2.DMA work with physical address, we should use DMA to put multi-channel(480p 720p) buffer's to a buffer(1080p). but it seem that can not get physical address from omap bo, witch means DMA can not work.

0 tuen over 7 years ago in reply to Ramprasad

Prodigy 210 points

Hi Ramprasad，
is it possible to map tiler memory to cmem, and how to do it? thanks.

0 Ramprasad over 7 years ago in reply to tuen

TI__Mastermind 30480 points

Hi tuen,
Currently IPUMM software stack is designed to work out of TILER memory only. There is no workaround for this limitation.

Processors

Processors forum

Linux/PROCESSOR-SDK-DRA7X: How to use the cmem buffer to do decoder