<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, May 14, 2025 at 4:27 AM Andrew Randrianasulu <<a href="mailto:randrianasulu@gmail.com">randrianasulu@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Sat, May 10, 2025 at 11:14 AM Andrew Randrianasulu<br>
<<a href="mailto:randrianasulu@gmail.com" target="_blank">randrianasulu@gmail.com</a>> wrote:<br>
><br>
> On Sat, May 10, 2025 at 9:05 AM Paul B Mahol <<a href="mailto:onemda@gmail.com" target="_blank">onemda@gmail.com</a>> wrote:<br>
> ><br>
> ><br>
> ><br>
> > On Fri, May 9, 2025 at 11:38 PM Andrew Randrianasulu <<a href="mailto:randrianasulu@gmail.com" target="_blank">randrianasulu@gmail.com</a>> wrote:<br>
> >><br>
> >> I was looking at why our application (cinelerra-gg) crashed at trying to use libplacebo<br>
> >><br>
> >> I found that libplacebo defines itself<br>
> >><br>
> >> <a href="https://ffmpeg.org/doxygen/7.0/vf__libplacebo_8c.html" rel="noreferrer" target="_blank">https://ffmpeg.org/doxygen/7.0/vf__libplacebo_8c.html</a><br>
> >><br>
> >> as<br>
> >><br>
> >> .flags = AVFILTER_FLAG_HWDEVICE | AVFILTER_FLAG_DYNAMIC_INPUTS,<br>
> >><br>
> >> so only output pad is defined, as far as I can see:<br>
> >><br>
> >> static const AVFilterPad libplacebo_outputs[] = {<br>
> >> {<br>
> >> .name = "default",<br>
> >> .type = AVMEDIA_TYPE_VIDEO,<br>
> >> .config_props = &libplacebo_config_output,<br>
> >> },<br>
> >> };<br>
> >><br>
> >><br>
> >><br>
> >> then when our code calls<br>
> >><br>
> >> avfilter_pad_get_type()<br>
> ><br>
> ><br>
> > You need to call it only after filtergraph have been configured, not before because in such cases number of output pads may be 0 before configuration.<br>
> > In any case you need to check current number of input pads and output pads for each filter before trying to access them.<br>
> ><br>
><br>
> Thanks. Attached patch makes this crash go away, just 32-bit cingg<br>
> can't cope with 4k frames filtering en-masse :)<br>
<br>
Sadly wtch ffmpeg.git patch does not work anymore.<br>
<br>
I tried to use<br>
<br>
int nb_pads = avfilter_filter_pad_count(filter,0);<br></blockquote><div><br></div><div>input pads != output pads</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
but this one apparently crashes when I try zscale :(<br>
<br>
while may be zscale was just not compiled in?<br>
<br>
I'll retry with some more env. options.<br>
<br>
On the plus side ffmpeg.git + radv + h264 video = it mostly works.<br>
Some vids still crash us ...<br>
<br>
<br>
><br>
> Andrea, can you test attached patch + this opts file put alongside<br>
> test 4k HDR video decodable by hardware?<br>
><br>
><br>
><br>
> ><br>
> >><br>
> >><br>
> >> it promptly crashes.<br>
> >><br>
> >> BC_Signals::dump_stack<br>
> >> cin() [0x8b2c9e2]<br>
> >> linux-gate.so.1(__kernel_rt_sigreturn+0) [0xf7fb8590]<br>
> >> cin(avfilter_pad_get_type+0x14) [0x99266a4]<br>
> >> cin(_ZN13FFVideoStream13create_filterEPKc+0xbc) [0x865669c]<br>
> >> cin(_ZN6FFMPEG12open_decoderEv+0x80f) [0x865732f]<br>
> >> cin(_ZN10FileFFMPEG9check_sigEP5Asset+0x81) [0x8670071]<br>
> >> cin(_ZN4File5probeEv+0x376) [0x867cd86]<br>
> >> cin(_ZN4File9open_fileEP11PreferencesP5Assetii+0x378) [0x867d628]<br>
> >> cin(_ZN7MWindow14load_filenamesEP9ArrayListIPcEiii+0x250) [0x87301f0]<br>
> >> cin(_ZN17CommandLineThread3runEv+0x53) [0x86e2cd3]<br>
> >> cin(_ZN6Thread10entrypointEPv+0x41) [0x8b70c11]<br>
> >> /lib/libpthread.so.0(+0x7328) [0xf7df9328]<br>
> >> /lib/libc.so.6(clone+0x66) [0xf0373f06]<br>
> >><br>
> >><br>
> >><br>
> >> We still hope to get libplacebo's tonemapping + vulkan hevc decoding going, so any pointers how to talk to those dynamic_input filters will be useful. Even swscale is dynamic_input in ffmpeg 7.1+, so I (we) really hope to keep it working, too.<br>
> >><br>
> >> Code:<br>
> >><br>
> >> <a href="https://git.cinelerra-gg.org/git/?p=goodguy/cinelerra.git;a=blob;f=cinelerra-5.1/cinelerra/ffmpeg.C;h=1d0979df59f932628246678a920aca002d8dd88b;hb=HEAD#l3893" rel="noreferrer" target="_blank">https://git.cinelerra-gg.org/git/?p=goodguy/cinelerra.git;a=blob;f=cinelerra-5.1/cinelerra/ffmpeg.C;h=1d0979df59f932628246678a920aca002d8dd88b;hb=HEAD#l3893</a><br>
> >><br>
> >><br>
> >><br>
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</blockquote></div></div>