

<HTML><BODY>My purpose is decoding a received from RTCP stream h264 AVPacket-s to AVFrame-s using by hardware of rk3399 (Rockchip RK3399 is a processor for computing(aarch64, Rockchip platform))<br><br>I found that rk3399 has mpp. Media Process Platform(mpp) is the video codec parser and <span class="_Tgc">Hardware Abstraction Layer library for the Rockchip platforms.<br>Mpp provides C API for decoding h264 video files using by hardware of Rockchip platform.</span><br><br>And now i am thinking that the problem is converting from AVPacket(contain H264 data from RTCP stream) to MppPacket(this packet i will send to hardware decoder)<br><br>Thanks,<br>Anton Prikazchikov<br><blockquote style="border-left:1px solid #0857A6; margin:10px; padding:0 0 0 10px;">

        ÐŸÐ¾Ð½ÐµÐ´ÐµÐ»ÑŒÐ½Ð¸Ðº,  9 Ð°Ð¿Ñ€ÐµÐ»Ñ 2018, 20:06 +04:00 Ð¾Ñ‚ Henri Zikken <zikken@xs4all.nl>:<br>

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            <div id="style_15232899660000000175_BODY"><div class="class_1523321765"><div class="WordSection1_mailru_css_attribute_postfix"><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US">Ok, the rk339 is soms sort of computer. You are receiving a stream on that computer. Now you wish to decode that stream.</span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US">What is your purpose? What do you mean by decoding a stream? What has MPP got to do witht his all?</span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US">Ffmpeg can decode H264. See the docs for a full example of this:</span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"><a href="https://ffmpeg.org/doxygen/trunk/decoding__encoding_8c-source.html" target="_blank" rel=" noopener noreferrer">https://ffmpeg.org/doxygen/trunk/decoding__encoding_8c-source.html</a></span><br data-mce-bogus="1"></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US">You need more than just including .h files. The .h files can be seen as â€˜descriptions of stuff to be found somewhere elseâ€™. So having the .h files might make it compile, but then it wonâ€™t link or wonâ€™t run due to missing files.</span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US">You need the compiled .so, .a or .dll files. So you need to compile ffmpeg yourself, or find the binaries suitable for your system.</span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US">Regards,</span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US">Henri Zikken</span></p><p class="MsoNormal_mailru_css_attribute_postfix"><span style="mso-fareast-language:EN-US"> </span></p><div><div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal_mailru_css_attribute_postfix"><b>Van:</b> Libav-user <<a href="mailto:libav-user-bounces@ffmpeg.org">libav-user-bounces@ffmpeg.org</a>> <b>Namens </b>Anton Prikazchikov<br><b>Verzonden:</b> maandag 9 april 2018 16:27<br><b>Aan:</b> <a href="mailto:libav-user@ffmpeg.org">libav-user@ffmpeg.org</a><br><b>Onderwerp:</b> [Libav-user] How to use rkmpp decoder?</p></div></div><p class="MsoNormal_mailru_css_attribute_postfix"> </p><div><div><div id="style_15232839560000000369_BODY_mailru_css_attribute_postfix"><div><p>Hello,<br><br>I have rk3399 and installed mpp(<a href="https://github.com/rockchip-linux/mpp" target="_blank" rel=" noopener noreferrer">https://github.com/rockchip-linux/mpp</a>).<br><br>I am receiving rtsp stream using by ffmpeg(C++).<br>And now I have to decode h264 video using by mpp but I don't understand how to do this. <br><br>I found <a href="https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/rkmppdec.c" target="_blank" rel=" noopener noreferrer">https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/rkmppdec.c</a>  and try to use this code for decoding.</p><p>I stopped on the code line below:</p><p>ret = <span class="pl-c1mailrucssattributepostfix_mailru_css_attribute_postfix">ff_decode_get_packet</span>(avctx, &pkt);<br><br>This function requires .h files from ffmpeg which i have not in my compiled version. Could someone prompt can I add some flags at configuration stage for .h files or somthing else?(I don't want take these files from github src)<br><br>Or maybe is there a better way for h264 decoding using by hw?<br><br>Thanks,<br>Anton Prikazchikov</p></div></div></div></div></div></div></div>

            
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