[FFmpeg-trac] #3486(swscale:new): SWS bicubiclin resizing filter doesn't work anymore

FFmpeg trac at avcodec.org
Sat Mar 22 11:29:03 CET 2014


#3486: SWS bicubiclin resizing filter doesn't work anymore
---------------------------------+--------------------------------------
             Reporter:  cyril    |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  swscale  |                  Version:  git-master
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+--------------------------------------
 Summary of the bug: when I try to resize using the bicubiclin algorithm, I
 just get an error, while others as sinc, lanczos or vanilla bicubic are
 working fine.

 Also when trying to programmatically use SWS_BICUBLIN with
 sws_getCachedContext(), I get a C runtime exception.

 Maybe, SWS_BICUBLIN has been removed from FFmpeg?

 How to reproduce:
 {{{
 % ffplay -i <any video file>  -sws_flags bicubiclin
 ffplay version N-61678-gd003a0c Copyright (c) 2003-2014 the FFmpeg
 developers
   built on Mar 21 2014 22:08:13 with gcc 4.8.2 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-av
 isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
 --enab
 le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-
 libfreetyp
 e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
 --ena
 ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-l
 ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
 --enable-libsp
 eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-
 libvo-aa
 cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-
 libwavp
 ack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid
 --enable
 -zlib
   libavutil      52. 67.100 / 52. 67.100
   libavcodec     55. 52.102 / 55. 52.102
   libavformat    55. 34.101 / 55. 34.101
   libavdevice    55. 11.100 / 55. 11.100
   libavfilter     4.  3.100 /  4.  3.100
   libswscale      2.  5.102 /  2.  5.102
   libswresample   0. 18.100 /  0. 18.100
   libpostproc    52.  3.100 / 52.  3.100
 [swscaler @ 00000000029c8e00] [Eval @ 000000000022f5b0] Undefined constant
 or mi
 ssing '(' in 'bicubiclin'
 [swscaler @ 00000000029c8e00] Unable to parse option value "bicubiclin"
 Error setting option sws_flags.
 Failed to set value 'bicubiclin' for option 'sws_flags': Error number -22
 occurr
 ed
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3486>
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