<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><base href="https://e.mail.ru/" target="_self"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=NL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><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.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><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?<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Ffmpeg can decode H264. See the docs for a full example of this:<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><a href="https://ffmpeg.org/doxygen/trunk/decoding__encoding_8c-source.html">https://ffmpeg.org/doxygen/trunk/decoding__encoding_8c-source.html</a><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>You need more than just including .h files. The .h files can be seen as ‘descriptions of stuff to be found somewhere else’. So having the .h files might make it compile, but then it won’t link or won’t run due to missing files.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><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.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Henri Zikken<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b>Van:</b> Libav-user <libav-user-bounces@ffmpeg.org> <b>Namens </b>Anton Prikazchikov<br><b>Verzonden:</b> maandag 9 april 2018 16:27<br><b>Aan:</b> libav-user@ffmpeg.org<br><b>Onderwerp:</b> [Libav-user] How to use rkmpp decoder?<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><div id="style_15232839560000000369_BODY"><div><p>Hello,<br><br>I have rk3399 and installed mpp(<a href="https://github.com/rockchip-linux/mpp" target="_blank">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">https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/rkmppdec.c</a> and try to use this code for decoding.<o:p></o:p></p><p>I stopped on the code line below:<o:p></o:p></p><p>ret = <span class=pl-c1mailrucssattributepostfix>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<o:p></o:p></p></div></div></div></div></div></body></html>