Other Parts Discussed in Thread: DM3730, OMAP3530
HI,
I have some questions about the development of dsp-codecs working within
a codec-server. The board I have is a custom developed system with a
omap37 (DM3730) series processor, runnning with 1 GHz, 512 MB Ram and
OpenEmbedded as software platform. All needed software parts can be
build with this OpenEmbedded platform, dsplink, dspbios, cmem,
edman-lld, gstreamer-ti plugin, codecs, codecserver and so on. All
resulting ipk's can be installed and first tests show me the software is
working.
1. The default recipes in openembbed are building a codecserver with
some streaming codecs in it for accelerating audio/video streams with
the DSP. I try a gstreamer pipe like this for testing the h264enc codec
streaming to a file.
gst-launch -v videotestsrc num-buffers=100 ! video/x-raw-yuv,
framerate=25/1, width=640, height=480 ! TIVidenc1 codecName=h264enc
engineName=codecServer displayBuffer=true ! dmaiperf ! filesink
location=sample.264
I'm really surprised about the resulting performance of about 4
framespersecond because I expected that it should be possible to achieve
25 fps. TI has given some performance results here
http://processors.wiki.ti.com/index.php/OMAP3530_Performance#Results on a
OMAP3530 EVM.
Has anyone made similar experience and can give me some hints to boost the h264 streaming ?
2. I'm interessting to develop and test my own codecs. First I have
builded a codec template for developing a simple image inverter with a IUNIVERSAL-Interface only for seeing the workflow with the
codec-wizard and building the codec with Code Composer Studio.
Everything is working without any problems. Then I have generated a
codecserver using the codecserver wizard and added my new codec and some
TI-default video streaming codecs (h264enc/dec) to the new codecserver.
The memory configuration is also adjusted to my hardware (448 MB for
the linux system, 16 MB for Dsplink and 48 MB for shared memory).
The codec server wizard give some selection to influence a special part
of Memorymanagement, selection EDMA3 LLD. The EDMA3 LLD is selected by
default. Trying the same h264 encoding gstreamer pipe the h264enc will not starting anymore. To enable the verbose mode I
added the CE_DEBUG=3 option to the gstreamer pipe and found some interessing error-messages but as a new-comer it is not easy to interpret:
[DSP] @0,129,449tk: [+0 T:0x9cf4c61c S:0x9cf502a4] CE - Engine_open> Enter('local', 0x9cf502f4, 0x9c2048c0)
[DSP] @0,129,974tk: [+0 T:0x9cf4c61c S:0x9cf50284] OM - Memory_alloc> Enter(size=0x34)
[DSP] @0,130,389tk: [+0 T:0x9cf4c61c S:0x9cf50284] OM - Memory_alloc> return (0x9cf51178)
[DSP] @0,130,836tk: [+4 T:0x9cf4c61c S:0x9cf502a4] CE - Engine_open> engine->server = 0x0
[DSP] @0,131,334tk: [+0 T:0x9cf4c61c S:0x9cf502a4] CE - Engine_open> return(-1661660808)
[DSP] @0,131,878tk: [+0 T:0x9cf4c61c S:0x9cf502ec] OM - Memory_alloc> Enter(size=0x34)
[DSP] @0,132,298tk: [+0 T:0x9cf4c61c S:0x9cf502ec] OM - Memory_alloc> return (0x9cf511b0)
[DSP] @0,132,822tk: [+0 T:0x9cf4c61c S:0x9cf502c4]
ti.sdo.ce.alg.Algorithm - Algorithm_create> Enter(fxns=0x9cfc5ab0,
idma3Fxns=0x9cfc5adc, iresFxns=0x0, params=0x9c2048c0, attrs=0x9cf50410)
[DSP] @0,133,697tk: [+0 T:0x9cf4c61c S:0x9cf502a4] OM - Memory_alloc> Enter(size=0x10)
[DSP] @0,134,205tk: [+0 T:0x9cf4c61c S:0x9cf502a4] OM - Memory_alloc> return (0x9cf511e8)
[DSP] @0,158,326tk: [+0 T:0x9cf4c61c S:0x9cf5022c] ti.sdo.ce.osal.Sem - Sem_create> count 1
[DSP] @0,158,811tk: [+0 T:0x9cf4c61c S:0x9cf5022c] ti.sdo.ce.osal.Sem - Sem_create> sem: 0x9cf516e4
[DSP] @0,159,859tk: [+0 T:0x9cf4c61c S:0x9cf501a4] ti.sdo.ce.osal.Sem - Sem_create> count 1
[DSP] @0,160,322tk: [+0 T:0x9cf4c61c S:0x9cf501a4] ti.sdo.ce.osal.Sem - Sem_create> sem: 0x9cf51714
[DSP] @0,162,139tk: [+0 T:0x9cf4c61c S:0x9cf5016c] ti.sdo.ce.osal.Sem - Sem_delete> sem: 0x9cf516e4
[DSP] @0,162,771tk: [+0 T:0x9cf4c61c S:0x9cf501b4] ti.sdo.ce.osal.Sem - Sem_delete> sem: 0x9cf51714
[DSP] @0,163,366tk: [+7 T:0x9cf4c61c S:0x9cf502c4]
ti.sdo.ce.alg.Algorithm - Algorithm_create> Granting DMA channels to
algorithm through DMAN3 FAILED (0xfffffffe)
[DSP] @0,164,204tk: [+0 T:0x9cf4c61c S:0x9cf502a4] ti.sdo.ce.alg.Algorithm - Algorithm_delete> Enter(alg=0x9cf511e8)
[DSP] @0,165,168tk: [+0 T:0x9cf4c61c S:0x9cf50274] OM - Memory_free> Enter(addr=0x9cf511e8, size=16)
[DSP] @0,165,733tk: [+0 T:0x9cf4c61c S:0x9cf50274] OM - Memory_free> return (0x1)
[DSP] @0,166,125tk: [+0 T:0x9cf4c61c S:0x9cf502a4] ti.sdo.ce.alg.Algorithm - Algorithm_delete> Exit
[DSP] @0,166,624tk: [+0 T:0x9cf4c61c S:0x9cf502c4] ti.sdo.ce.alg.Algorithm - Algorithm_create> return (0x0)
[DSP] @0,167,196tk: [+6 T:0x9cf4c61c S:0x9cf5030c] CV - VISA_create2> FAILED to create local codec.
[DSP] @0,167,691tk: [+0 T:0x9cf4c61c S:0x9cf502dc] CV - VISA_delete(0x9cf511b0)
[DSP] @0,168,081tk: [+5 T:0x9cf4c61c S:0x9cf502dc] CV - VISA_delete> deleting codec (localQueue=0xffff, remoteQueue=0xffff)
I'm not confirm with this EDMA3_LLD memory managemant but if unchecking
the EDMA3_LLD selection as described here
http://processors.wiki.ti.com/index.php/Codec_Engine_GenServer_Wizard_FAQ#Algorithm_and_Group_Configuration
I can work with my test codec server. What is going wrong here ? I
have installed the ipk ti-edma3lld on my test system without any
changes on the behaviour.
Thanks Uli
