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Which codecs support multiple C66x DSP?

YC, Tsai
Intellectual 590 points

Hi

Q1.I want to know: Which codecs (the latest version) support multiple C66x DSP?

According to codec datasheet, I don't know which codecs support multiple DSP like DSPC-8681 or DSPC-8682.

As far as I know, AVC-Intra Encoder, H264HP Encoder, H265 Decoder, MPEG2 Encoder/Decoder, MPEG2 MP Decoder, MPEG4 Encoder support multicore but not multichip, right? Are there some codec I miss?

Q2.Why some codecs not support multichip?

 

Regards.

  • 0
    Expert 1945 points

    Hi Tsai,

    1. Yes. All the mentioned codecs support multicore. We are not sure about other DSP codec support on multicore.

    2. All the mentioned codec can be realized with real time performance using single Shannon(C66x) chip. So there is no requirement to add multichip support.

    TI is working on multichip solutions for HEVC and it will soon be available to public.

    Thanks and regards

    Sudheesh

  • 0 in reply to Sudheesh
    Intellectual 590 points

    Hi Sudheesh,

    Thank you for reply.

    My purpose is to increase multichip utilization.  As you mentioned earlier, all codecs support multicore. But I don't know which MCSDK VIDEO demo support multichip.

    Is that codec's inherent limitation or TI not make it support multichip? 

    According to answer 2, It means that the codecs I mentioned are unnecessary to support multichip because support multichip won't increase codec performance, right?

     

    Regards.

  • 0 in reply to YC, Tsai
    Expert 1945 points

    Hi Tsai,

    Codec design is basically in tune with different application scenarios like broadcasting, video surveillance etc. These scenarios will have a performance and quality requirements which in turn will be performance and quality requirements of codec.

    As I mentioned earlier, these performance usecases, for the codecs mentioned by you, are met by single chip solution of C6678. You can refer to codec datasheet for performance statistics.

    For example, 1080P, 30FPS,  H264HP Encoder is a single chip solution which is readily available. For meeting 1080P60 (with C66x) we may have to use 2 shannon chips with few modifications at codec and application side.

    If you have a product development scenario where you need more performance by utilizing more cores(multichip solution), TI will help you to do that.

    Regards

    Sudheesh

  • 0 in reply to Sudheesh
    Intellectual 590 points

    Hi Sudheesh,

    Thank you for your prompt reply.

    I thought I should modify the codec to increase DSP utilization or contact TI for my requirement.

     

    Regards.