#!/bin/sh
 
 srcdir=${0%/*}/..
 
 while read -r field equal value; do
   case "$field $equal" in
     ".id =")
       eval "known_${value%,}=1"
       ;;
   esac
 done < $srcdir/libavcodec/codec_desc.c
 
 known_AV_CODEC_ID_NONE=1
 known_AV_CODEC_ID_FIRST_AUDIO=1
 known_AV_CODEC_ID_FIRST_SUBTITLE=1
 known_AV_CODEC_ID_FIRST_UNKNOWN=1
 known_AV_CODEC_ID_TTF=1
 known_AV_CODEC_ID_PROBE=1
 known_AV_CODEC_ID_MPEG2TS=1
 known_AV_CODEC_ID_MPEG4SYSTEMS=1
 known_AV_CODEC_ID_FFMETADATA=1
 
 in=0
 while read -r line; do
   case "$in-$line" in
     0-"enum AVCodecID"*) in=1;;
     1-*"};"*)            in=0;;
     1-*AV_CODEC_ID_*,*)
       cid="${line%%[, =]*}"
       eval "known=\$known_$cid"
       case "$known" in
         1) ;;
         *) echo "$cid missing";;
       esac
       ;;
   esac
 done < $srcdir/libavcodec/avcodec.h