#! /bin/sh# ffdecsa optimization#check whether option is supported by this cpucheck_cpu(){ ok=0 grep "^flags.* $1 " /proc/cpuinfo >/dev/null 2>&1 if test $? -eq 0; then ok=1 else grep "^flags.* $1\$" /proc/cpuinfo >/dev/null 2>&1 if test $? -eq 0; then ok=1 fi fi eval test $ok -eq 1}#try to figure out best FFdecsa compiler optionsget_cpu_optimization() { FLAGS="FLAGS=-O3 -fexpensive-optimizations -funroll-loops" arch=`uname -m` processors_flags=`cat /proc/cpuinfo | grep "flags" | head -n 1` vendor=`cat /proc/cpuinfo |grep "vendor_id" | head -n 1 | sed -e "s/.*:\W*//"` gcc_ver=`$CXX -v 2>&1 | grep "gcc version" | head -n 1` gcc_major=`echo $gcc_ver | sed -e 's/^gcc version \([0-9]*\)\..*/\1/'` gcc_minor=`echo $gcc_ver | sed -e 's/^gcc version [0-9]*\.\([0-9]*\).*/\1/'` if test $gcc_major -gt 4; then ARCH="native" elif test $gcc_major -eq 4 && test $gcc_minor -ge 2; then ARCH="native" elif test "x$arch" = "xx86_64"; then if test "x$vendor" = "xAuthenticAMD"; then ARCH="k8" elif test "x$vendor" = "xGenuineIntel"; then ARCH="nocona" else echo **WARNING** - Unknown vendor $vendor - assuming nocona ARCH="nocona" fi FLAGS="$FLAGS -finline-limit=6000000 --param max-unrolled-insns=500" elif test "x$arch" = "xathlon-xp"; then ARCH="athlon-xp" FLAGS="$FLAGS -finline-limit=6000000 --param max-unrolled-insns=500" else ARCH="pentium" fi OPTS="" for opt in mmx sse sse2; do if check_cpu $opt; then OPTS="$OPTS $opt" FLAGS="$FLAGS -m$opt" fi done FLAGS="$FLAGS -march=$ARCH" echo "Processor capabilities: $ARCH ($OPTS )"}ffdecsa_opt="yes"for opt do optval="${opt#*=}" case "$opt" in --dvb-dir=*) dvb_path=`eval echo $optval` ;; --cxx=*) CXX="$optval" ;; --optimize=*) ffdecsa_opt="$optval" ;; --help) show_help ;; *) die_unknown $opt ;; esacdoneif test "x$CXX" = "x"; then CXX=g++fiecho "Using C++ compiler: $CXX"if test "x$ffdecsa_opt" = "xlong"; then FFDECSA_MODES="PARALLEL_32_INT PARALLEL_32_4CHAR PARALLEL_32_4CHARA \ PARALLEL_64_8CHAR PARALLEL_64_8CHARA PARALLEL_64_2INT \ PARALLEL_64_LONG PARALLEL_64_MMX PARALLEL_128_16CHAR \ PARALLEL_128_16CHARA PARALLEL_128_4INT PARALLEL_128_2LONG \ PARALLEL_128_2MMX PARALLEL_128_SSE PARALLEL_128_SSE2"elif test "x$ffdecsa_opt" = "xyes"; then FFDECSA_MODES="PARALLEL_32_INT PARALLEL_64_2INT PARALLEL_64_LONG \ PARALLEL_64_MMX PARALLEL_128_2LONG PARALLEL_128_2MMX \ PARALLEL_128_SSE PARALLEL_128_SSE2"elif test "x$ffdecsa_opt" != "xno"; then echo "Bad option to --optimize '$ffdecsa_opt'. Should be 'yes, no, long'" exit 1fiif test "x${TMPDIR}" = "x"; then TMPDIR="/tmp"fiTMPDIR="${TMPDIR}/kaffeine-sc-${RANDOM}"mkdir ${TMPDIR}#Test FFDECSA compileMAX_MODE=PARALLEL_32_INTMAX_val=0if test "x$ffdecsa_opt" != "xno"; then if test -f /proc/cpuinfo; then get_cpu_optimization fi TMPOUT="${TMPDIR}/FFdecsa/out" mkdir "${TMPDIR}/FFdecsa" cp src/FFdecsa/*.c src/FFdecsa/*.h src/FFdecsa/Makefile "${TMPDIR}/FFdecsa/" echo "Trying various FFdecsa optimizations..." for var in ${FFDECSA_MODES}; do make -C "${TMPDIR}/FFdecsa" FFdecsa_test "PARALLEL_MODE=${var}" "${FLAGS}" "COMPILER=$CXX" >/dev/null 2>&1 if test $? -ne 0 ; then echo " ${var}: build failed" else rm -f ${TMPOUT} sync;sleep 2; "${TMPDIR}/FFdecsa/FFdecsa_test" > /dev/null 2>"${TMPOUT}" if test $? -ne 0; then echo " ${var}: test failed" else grep FAILED "${TMPOUT}" >/dev/null 2>&1 if test $? -ne 1; then echo " ${var}: test failed" else res=`grep "speed=.*Mbit" "${TMPOUT}" | sed -e 's/^.*=\([0-9]*\)\.[0-9]* Mbit.*$/\1/'` echo " ${var}: $res" if test $res -gt $MAX_val; then MAX_val=$res MAX_MODE=$var fi fi fi fi make -C "${TMPDIR}/FFdecsa" clean >/dev/null 2>&1 done echo "best guess = ${MAX_MODE}" echo "writing FFdecsa compile options to FFdecsa.make" echo "# Use this Flags for FFdecsa Makefile" > FFdecsa.make echo "COMPILER=$CXX" >> FFdecsa.make echo "$FLAGS" >> FFdecsa.make echo "# Set Paralell Mode in src/FFdecsa/FFdecsa.c Line 53" >> FFdecsa.make echo "PARALLEL_MODE=${MAX_MODE}" >> FFdecsa.makefirm -rf "${TMPDIR}"