h264fhdvenc can only reach 10 fps

David

Hi,all

The parameters are set as bellow:

VIDENC1_DynamicParams dynParams = Venc1_DynamicParams_DEFAULT;

VIDENC1_Params params = Venc1_Params_DEFAULT;

    params.maxWidth          = 1920;
    params.maxHeight         = 1088;
    params.inputChromaFormat = XDM_YUV_420SP;
    params.reconChromaFormat = XDM_CHROMA_NA;
    params.rateControlPreset = IVIDEO_LOW_DELAY;
    params.maxBitRate        = 20000000;
    params.dataEndianness        = XDM_LE_32;
    dynParams.targetBitRate = params.maxBitRate;
    dynParams.inputWidth    = params.maxWidth;
    dynParams.inputHeight   = params.maxHeight;

Can anyone figure out the problem. Why the speed can't reach 30 frames per second as its document said.

Regards,

David

over 13 years ago

0 David over 13 years ago

Intellectual 620 points

And I have to use another codec write by mysel at the same time which also use L2 cache .Would this cause some cache corruption?

thanks

0 Girish Srinivasa over 13 years ago in reply to David

TI__Prodigy 480 points

Can you kindly provide us the version of the codec being used? Can you as well check at a lower bit-rate?

0 David over 13 years ago in reply to Girish Srinivasa

Intellectual 620 points

hi, Girish

Thanks for your reply . H.264 Encoder Version 01.10.02.

Did you mean params.maxBitRate = 20000000 is too big. I will try as you suggested.

regards,

david

0 David over 13 years ago in reply to David

Intellectual 620 points

I have tried different bitrate ,but the speed is still near 10 fps.

Can someone from TI provide more useful suggestion.It's very important to me.Wating for your help.

regards,

David

0 Girish Srinivasa over 13 years ago in reply to David

TI__Prodigy 480 points

Hi,

The performance of the h264fhdvenc encoder is dependent on the code placement & cache configuration. Can you kindly verify the following?

1. Is the 64KB of L2 memory configured as cache?

2. L1p & d memory is configured as 32KB cache.

3. Have you modified the code placement for the encoder library? Need to review your linker file

Can you also please let us know if you have the library release or modified the source code release?

0 David over 13 years ago in reply to Girish Srinivasa

Intellectual 620 points

Hi,Girish

Thanks for your sincerely help.

Best regards,

David

0 David over 13 years ago in reply to Girish Srinivasa

Intellectual 620 points

Hi，Girish

I face a new problem ,the outBufSize I get is 2088960=1920*1088.It seems too big.The way I get the outBufSize is posted below:

hVe1 = Venc1_create(ce, "h264fhdvenc", &params, &dynParams);

outBufSize = Venc1_getOutBufSize(hVe1);

Can you help to analyse ，where the problem may be.

Regars,

David

0 mike soso over 13 years ago in reply to David

Intellectual 930 points

Hi David,

I don't understand why it's a problem ? You can't know before encoding the size of the encoded frame so you have to allocate enough memory space to be sure you will push in the encoded frame so :

When you do that :

outBufSize = Venc1_getOutBufSize(hVe1)

after you may call a memory allocator of this size like :

videnc1->hOutBufTab = gst_tidmaibuftab_new(3,

outBufSize, BufferGfx_getBufferAttrs (&gfxAttrsOut));

But after you can create a buffer after encoding process with :

*outBuf = gst_buffer_new_and_alloc(Buffer_getNumBytesUsed(videnc1->hEncOutBuf));

and outBuf will be of the size of the encoded frame. (it's the code from TIVidenc1.c from gstreamer TI)

If it's not helping you , please give more info about your "problem".

Mika

0 David over 13 years ago in reply to mike soso

Intellectual 620 points

Hi,Mike

The problem has been solved .Thanks for your help.

Regards,

David

0 Pramod Kumar Swami over 13 years ago in reply to David

TI__Genius 14000 points

David, Can you confirm that your original query related to performance is resolved?

0 David over 13 years ago in reply to Pramod Kumar Swami

Intellectual 620 points

Yes,when I only run h264 codec .The speed is 30 fps.

And I have to use another codec writed by myself at the same time which also use L2 cache .It cause some cache corruption.

Engine_createNode> Remote node creation FAILED (0x80008008).//hVe1 = Venc1_create(ce, "h264fhdvenc", &params, &dynParams);

MY own codec need use 60KB L2 cache.I wonder if the two codecs can run together in one application.

Regards,

David

0 Chris Ring over 13 years ago in reply to David

TI__Genius 17205 points

If you're resource constrained, this may help you understand how codecs can share resources:

http://processors.wiki.ti.com/index.php/Codec_Engine_GroupIds

Sharing resources may impose other constraints you may not be willing to accept (e.g. swapping context in/out may introduce new overheads), but wanted to make you aware of the option.

Chris

0 David over 13 years ago in reply to Chris Ring

Intellectual 620 points

Hi， Chris

First ，sorry for so late reply .

I set my server.tcf according the cs2dm6467 "CS" demo like below:

/* Specify the L2 memory setting */
var device_regs = {
    l1PMode: "32k",
    l1DMode: "32k",
    l2Mode: "64k"
};

...

if (config.hasReportedError == false) {

bios.MEM.instance("IRAM").createHeap = 1;
bios.MEM.instance("IRAM").heapSize = 0x00010000;//0x00008000;//0x8f18;// 0x00010000;
bios.MEM.instance("IRAM").enableHeapLabel = 1;
bios.MEM.instance("IRAM").heapLabel = prog.extern("IRAM_HEAP", "asm");
prog.gen();
}

Now the h264 codec can work correctly. But my own codec "video_copy" which also need "64K" L2 memmory can't work.

The "video_copy" codec asks for L2 cache in "link.cmd " like below:

SECTIONS

{

.video_copy: > CACHE_L2

}

when I run the program on dm6467t board .It gives no error information ,just stucked.I must reset the board.

Can you help figure out where the problem may be.

Regards,

David.

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h264fhdvenc can only reach 10 fps