i.MX ProcessorsのトピックRe: imx8mqevk linux OpenMax H.264 decoder component transition state issue

imx8mqevk linux OpenMax H.264 decoder component transition state issue

doug4350 — Mon, 01 Apr 2019 18:39:00 GMT

Hi NXP Community,

I'm trying to create a video decoder using the Hantro library and am starting with this:

imx-vpu-hantro-1.10.0/openmax_il/source/decoder/test/video_decoder.c

I'm getting problems transitioning the component state from Loaded -> Idle -> Executing.

In the setup_component(...) function, near line 1289,

// should have transitioned to idle state now

OMX_STATETYPE state = OMX_StateLoaded;

while (state != OMX_StateIdle && state != OMX_StateInvalid) {

err = comp->GetState(comp, &state);

if (err != OMX_ErrorNone)

goto FAIL;

}

if (state == OMX_StateInvalid)

goto FAIL;

err = comp->SendCommand(comp, OMX_CommandStateSet, OMX_StateExecuting, NULL);

if (err != OMX_ErrorNone)

goto FAIL;

The execution gets stuck in an endless loop in the section while (state != OMX_StateIdle ...).

I've modified the loop to sleep 750uSec between iterations and fall out after 100 iterations, and I get an (expected) error message:

OMX ! decoder_send_command Transition is already pending (dec->statetrans != dec->state) decoder.c:818

I've also tried combinations of enabling/disabling the component input and output ports with no success.

Are there specific conditions inside the component that need to be set before it can transition to Idle?

Any other suggestions?

Edit: Does anyone have a sample of the test_script.txt file that the test program is using?

Thanks for any feedback you can offer.

- Doug

"Nothing is impossible if ImPossible"

edit: bump

Re: imx8mqevk linux OpenMax H.264 decoder component transition state issue

igorpadykov — Tue, 02 Apr 2019 04:39:34 GMT

Hi Doug

some vpu unit tests can be found in sect.6.6.2.3 Unit test attached Linux Manual

imx-test - i.MX Driver Test Application Software

Also may be useful

i.mx8M EVK board encoder and decoder

Best regards
igor
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Re: imx8mqevk linux OpenMax H.264 decoder component transition state issue

doug4350 — Wed, 03 Apr 2019 21:44:20 GMT

Hi Igor and thanks for the suggestions.

I was getting a bunch of headaches trying to get the unit test - mxc_vpu_test to work as it doesn't seem to support the MX8 and led me to conclude a lot of it was MX6 specific. I do have the imx8mqevk board.

So, I picked apart the imx-vpu-hantro-1.10.0/openmax_il/source/decoder/test/video_decoder.c source file to figure out how it works, and got symptoms which look similar to what I was getting. Here's the command line and output:

imx8mqevk:/run/media/mmcblk0p2/home/nxp/sybor/3rdParty/imx-vpu-hantro-1.10.0/openmax_il/source/decoder/test$ ./video_decoder -h264 -i ../../../../../../test.h264 -ih 480 -iw 480
OMX component test video decoder
Mar 20 2019, 05:52:06
[DBGT][debug_video_decoder_trace] disabled
[DBGT] g1dec compiled without trace support (ENABLE_DBGT_TRACE switch not enabled)
Input buffer width x height (480x480)
Allocating input buffer size 256000
bufPrivateInput 0xffffa6a0c010 / 281473477296144
Allocating input buffer size 256000
bufPrivateInput 0xffffa69cd010 / 281473477038096
Allocating input buffer size 256000
bufPrivateInput 0xffffa698e010 / 281473476780048
Allocating input buffer size 256000
bufPrivateInput 0xffffa694f010 / 281473476522000
Allocating input buffer size 256000
bufPrivateInput 0xffffa6910010 / 281473476263952
Allocating input buffer size 256000
bufPrivateInput 0xffffa68d1010 / 281473476005904
Allocating input buffer size 256000
bufPrivateInput 0xffffa6892010 / 281473475747856
Allocating input buffer size 256000
bufPrivateInput 0xffffa6853010 / 281473475489808
Allocating input buffer size 256000
bufPrivateInput 0xffffa6814010 / 281473475231760
Allocating input buffer size 256000
bufPrivateInput 0xffffa67d5010 / 281473474973712
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa6683010 / 281473473589264
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa6531010 / 281473472204816
Allocating output buffer size 1382400
OSAL ! OSAL_EventWaitMultiple select(max+1, &read, NULL, NULL, &tv) failed openmax_il/source/OSAL.c:1057
OSAL ! OSAL_EventWaitMultiple select(max+1, &read, NULL, NULL, &tv) failed openmax_il/source/OSAL.c:1057
bufPrivateOutput 0xffffa63df010 / 281473470820368
Allocating output buffer size 1382400
OSAL ! OSAL_EventWaitMultiple select(max+1, &read, NULL, NULL, &tv) failed openmax_il/source/OSAL.c:1057
bufPrivateOutput 0xffffa628d010 / 281473469435920
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa613b010 / 281473468051472
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa5fe9010 / 281473466667024
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa5e97010 / 281473465282576
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa5d45010 / 281473463898128
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa5bf3010 / 281473462513680
Allocating output buffer size 1382400
bufPrivateOutput 0xffffa5aa1010 / 281473461129232
OSAL ! OSAL_EventWaitMultiple select(max+1, &read, NULL, NULL, &tv) failed openmax_il/source/OSAL.c:1057
OMX H264 ! HantroHwDecOmx_decoder_create_h264 H264DecInit error codec_h264.c:903
OMX ! transition_to_idle_from_loaded ASYNC: error: OMX_ErrorHardware decoder.c:5146
OMX ! async_decoder_set_state ASYNC: set state error:OMX_ErrorHardware decoder.c:5828
VIDEO_DECODER ! setup_component error: OMX_ErrorNone
video_decoder.c:1318
OMX ! decoder_get_parameter Invalid state decoder.c:2126
VIDEO_DECODER ! comp_event Error: OMX_ErrorHardware video_decoder.c:745
OMX ! decoder_push_buffer Invalid state decoder.c:3358
OMX ! decoder_get_parameter Invalid state decoder.c:2126
Result summary:
Tests run: 1
Tests pass: 0
Tests fail: 1
Tests else: 0
*** FAIL ***

I'm not sure what I'm missing or where to look other than going down a rabbit trail into decoder.c.

Ideas?

Thanks,

- Doug

"Nothing is impossible if ImPossible"