DM6446 JPEG Encoder problem about multiple frames

kickgame

I need to encode video frames into JPEG on DM6446. I downloaded JPEG Baseline Encoder from Ti.

The codec is called by DMAI 1.16.

After successfully encoding the first frame by calling Ienc1_process(the outArgs.bytesGenerated=24Kbytes, the second call Ienc1_process

give bad result. The return value of Ienc1_process is ok, but the outArgs.bytesGenerated=573 bytes and outArgs.currentAU = 0.

It seems that only the first call of Ienc1_process can give correct result. I've verified this by calling Ienc1_delete to destroy the codec and Ienc1_create to create a new codec before each Ienc1_process,

create-process-delete for each frame is not a good solution. How can I encode multiple frames by create-process-process-...-delete? Thanks

over 15 years ago

0 Juan Gonzales over 15 years ago

TI__Mastermind 37340 points

This is a known issue with the codec; I am afraid that delete and create will be necessary at this point...

0 kickgame over 15 years ago in reply to Juan Gonzales

Intellectual 650 points

That's a bad news. Anyway, I can stop wasting time on JPEG encoder.

many thanks , Juan

0 Juan Gonzales over 15 years ago in reply to kickgame

TI__Mastermind 37340 points

what version of the codec are you using? and with which DVSDK version...? I want to check and see if there is a newer codec version that just has not made it to a DVSDK release yet.

0 kickgame over 15 years ago in reply to Juan Gonzales

Intellectual 650 points

The JPEG encoder is version 2.00.002. DVSDK is version 1.3

0 Juan Gonzales over 15 years ago in reply to kickgame

TI__Mastermind 37340 points

unfortunately, that is the latest version I see appearing on our codes data-base. I will try to investigate where we are with this bug...

0 Juan Gonzales over 15 years ago in reply to kickgame

TI__Mastermind 37340 points

ok, doing a little more digging, it appears you do not have to delete and create all the time, you can simply follow the Motion JPEG processing loop example on the wiki below to process several frames...

http://wiki.davincidsp.com/index.php/XDM_1.x_Semantics#Motion_JPEG_.28MJPEG.29_Processing

0 kickgame over 15 years ago in reply to Juan Gonzales

Intellectual 650 points

It really works! Many thanks, Juan

0 hilton over 15 years ago in reply to kickgame

Prodigy 45 points

how do you really works?

After successfully encoding the first frame by calling Ienc1_process(the outArgs.bytesGenerated=24Kbytes, the second call Ienc1_process

give bad result. The return value of Ienc1_process is ok, but the outArgs.bytesGenerated=573 bytes and outArgs.currentAU = 0.

0 kickgame over 15 years ago in reply to hilton

Intellectual 650 points

Just follow Juan's advice.

0 hilton over 15 years ago in reply to kickgame

Prodigy 45 points

hello,

I follow Juan's advice,but not sucess.

error is :

CMEMK Error: GETPHYS: Failed to convert virtual 0x2 to physical.
===> IMGENC1_control
CMEM Error: getPhys: Failed to get physical address of 0x2
==> IMGENC1_control error, dsperr:-1
Capture buffer allocated physical address 0x8579f000
Capture buffer allocated physical address 0x85935000
===> IMGENC1_process
===> IMGENC1_process OK
size = 575.

how do you process and control?

0 kickgame over 15 years ago in reply to hilton

Intellectual 650 points

No special steps. Just as the wiki link: For each frame, control(SET_PARAMS), then process ()

I didn't have your problem. Maybe you met a different problem.

0 hilton over 15 years ago in reply to kickgame

Prodigy 45 points

thank you!

control(XDM_SETPARAMS),process();

error:

CMEMK Error: GETPHYS: Failed to convert virtual 0x2 to physical.
===> IMGENC1_control
CMEM Error: getPhys: Failed to get physical address of 0x2
==> IMGENC1_control error, dsperr:-1
===> IMGENC1_process
===> IMGENC1_process OK
size = 575
If control(XDM_GETBUFINFO),process();

===> IMGENC1_control
===> IMGENC1_control OK
===> IMGENC1_process
===> IMGENC1_process OK
size = 573
what control() do you set?

0 kickgame over 15 years ago in reply to hilton

Intellectual 650 points

hilton said:

thank you!

control(XDM_SETPARAMS),process();

error:

CMEMK Error: GETPHYS: Failed to convert virtual 0x2 to physical.
===> IMGENC1_control
CMEM Error: getPhys: Failed to get physical address of 0x2
==> IMGENC1_control error, dsperr:-1
===> IMGENC1_process
===> IMGENC1_process OK
size = 575

The same steps. Again, I don't have the same problem as yours.

IMO, you should fix the problem of "CMEMK Error"

0 hilton over 15 years ago in reply to kickgame

Prodigy 45 points

thank you.I can work.

0 rafael becerra over 14 years ago

Intellectual 290 points

Where on TI site can I download JPEG baseline encoder software from ???

( I saw several versions of DMAI : 1.16, 1.20, 1.21, 1.24, 1.27.. the post mentions 1.16... I guess the recommended one would be the latest perhaps ? )

I looked through all the site and all I found were references to www.ittiam.com which is the 3rd party involved in this encoder.

I'm very interested in using this encoder in my application, to convert YCrCb images obtained from an image sensor to JPG files
and transmit them to a PC, my DSP is a DM6437x.

Thank you !!!

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DM6446 JPEG Encoder problem about multiple frames