diff options
author | Mans Rullgard <mans@mansr.com> | 2012-05-09 04:29:53 +0100 |
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committer | Mans Rullgard <mans@mansr.com> | 2012-08-07 22:30:49 +0100 |
commit | 154caa677c0ea62f82b7787b528304c150c6b928 (patch) | |
tree | 925176657918134181684bbae76b62c213e30cca | |
parent | 578344f79c480507fe07303ce6ed75d45fe0dd26 (diff) | |
download | ffmpeg-154caa677c0ea62f82b7787b528304c150c6b928.tar.gz |
configure: add --enable/disable-random option
This allows creating random configurations which is useful for
testing purposes.
Signed-off-by: Mans Rullgard <mans@mansr.com>
-rwxr-xr-x | configure | 40 |
1 files changed, 40 insertions, 0 deletions
@@ -266,6 +266,14 @@ Developer options (useful when working on Libav itself): \$LIBAV_SAMPLES at make invocation time. --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only; should be used only for debugging purposes) + --enable-random randomly enable/disable components + --disable-random + --enable-random=LIST randomly enable/disable specific components or + --disable-random=LIST component groups. LIST is a comma-separated list + of NAME[:PROB] entries where NAME is a component + (group) and PROB the probability associated with + NAME (default 0.5). + --random-seed=VALUE seed value for --enable/disable-random NOTE: Object files are built at the place where configure is launched. EOF @@ -1270,6 +1278,7 @@ CMDLINE_SET=" nm optflags pkg_config + random_seed samples sysinclude sysroot @@ -1846,6 +1855,27 @@ show_list() { exit 0 } +rand_list(){ + IFS=', ' + set -- $* + unset IFS + for thing; do + comp=${thing%:*} + prob=${thing#$comp} + prob=${prob#:} + is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST + echo "prob ${prob:-0.5}" + printf '%s\n' $comp + done +} + +do_random(){ + action=$1 + shift + random_seed=$(awk "BEGIN { srand($random_seed); print srand() }") + $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }") +} + for opt do optval="${opt#*=}" case "$opt" in @@ -1860,6 +1890,14 @@ for opt do --disable-everything) map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST ;; + --enable-random|--disable-random) + action=${opt%%-random} + do_random ${action#--} $COMPONENT_LIST + ;; + --enable-random=*|--disable-random=*) + action=${opt%%-random=*} + do_random ${action#--} $optval + ;; --enable-*=*|--disable-*=*) eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/') is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt" @@ -3390,6 +3428,8 @@ echo "libxvid enabled ${libxvid-no}" echo "openssl enabled ${openssl-no}" echo "zlib enabled ${zlib-no}" echo "bzlib enabled ${bzlib-no}" +test -n "$random_seed" && + echo "random seed ${random_seed}" echo for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do |