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#!/bin/sh
# Copyright (c) 2011 Nicolas George
#
# This file is part of FFmpeg.
#
# FFmpeg is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# FFmpeg is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with FFmpeg; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
set -e
config="$1"
out="$2"
test -n "$out"
outval=""
add_line () {
outval="$outval$*
"
}
parse_config_h () {
while read define var value; do
case "$define $var $value" in
"#define CONFIG_"*_*" 1") eval "$var=1";;
esac
done
}
define_codecid () {
id="$1"
n=${1#AV_CODEC_ID_}
add_line "case ${id}:"
eval "c=\${CONFIG_${n}_DECODER}:\${CONFIG_${n}_ENCODER}"
case "$c" in
1:*) s="decoder";;
*:1) s="encoder";;
*) s="";;
esac
case "$s" in
"") add_line " return \"$n\";" ;;
*)
add_line " { extern AVCodec ff_${n}_${s};"
add_line " return ff_${n}_${s}.name; }"
;;
esac
}
parse_enum_codecid () {
while read line; do
case "$line" in
"};") break;;
*AV_CODEC_ID_FIRST*=*) ;;
AV_CODEC_ID_*) define_codecid ${line%%[=,]*};;
esac
done
}
parse_avcodec_h () {
while read line; do
case "$line" in
"enum AVCodecID {") parse_enum_codecid; break;;
esac
done
}
parse_config_h < "$config"
parse_avcodec_h # use stdin
sed -e '/case.*:/!y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/' \
-e 's/extern avcodec /extern AVCodec /' > "$out" <<EOF
$outval
EOF
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