#!/bin/bash # # Provides functions for register settings for performance and DRM settings and # also some basic utility functions to kill processes, display error message e.t.c # # Copyright (C) 2019 Xilinx # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # THE SOFTWARE. #Default Globals DEFAULT_INPUT_PATH="/usr/share/movies/" GST_LAUNCH="gst-launch-1.0" OMXH264DEC="omxh264dec" OMXH265DEC="omxh265dec" H264PARSE="h264parse" H265PARSE="h265parse" QUEUE="queue" MULTIQUEUE="multiqueue" QTDEMUX="qtdemux name=demux demux.video_0" MTDEMUX="matroskademux name=demux demux.video_0" TSDEMUX="tsdemux name=demux" TSPARSE="tsparse" VIDEOCONVERT="videoconvert" OMXH264ENC="omxh264enc" OMXH265ENC="omxh265enc" RTPH264PAY="rtph264pay" RTPH265PAY="rtph265pay" RTPMP2TPAY="rtpmp2tpay" UDPSINK="udpsink max-lateness=-1 qos-dscp=60 async=false max-bitrate=5000000" FILE_SRC="filesrc location" FILESINK="filesink location" RTPH264DEPAY="rtph264depay" RTPH265DEPAY="rtph265depay" RTPMP2TDEPAY="rtpmp2tdepay" RTPJITTERBUFFER="rtpjitterbuffer latency=1000" UDP_SRC="udpsrc" V4L2SRC="v4l2src" INTERNAL_ENTROPY_BUFFERS="2" RTP_CAPS="application/x-rtp, media=video, clock-rate=90000, payload=96," MPEGTS_CAPS="video/mpegts" AUDIO_SINK="autoaudiosink" AUDIO_SINK_BASE="unknown" AUDIOCONVERT="audioconvert" AUDIORESAMPLE="audioresample" AUDIO_CAPS="audio/x-raw, channels=2, rate=48000" MPEG_CAPS="video/mpegts" CODEC_TYPE="avc" NEED_DOWNLOAD=0 DEFAULT_URL_AVC="petalinux.xilinx.com/sswreleases/video-files/bbb_sunflower_2160p_30fps_normal_avc_new.mp4" DEFAULT_URL_HEVC="petalinux.xilinx.com/sswreleases/video-files/bbb_sunflower_2160p_30fps_normal_hevc.mkv" YOUTUBE_LINK=0 SOUPHTTP_SRC="souphttpsrc location" COMPRESSED_MODE=0 AUDIO_SRC="autoaudiosrc" AUDIO_SRC_BASE="unknown" DISPLAY_DEVICE="fd4a0000.zynqmp-display" DPMS="unknown" PULSEAUDIO="unknown" ##################################################################################### # Name: killProcess # Argument: Name of the process to be killed # Description: Kills process passed as an argument if it is running ###################################################################################### killProcess () { pidof "$1" > "/dev/null" if [ $? -eq 0 ]; then if [ $1 == "Xorg" ]; then sleep 1 | killall -9 "$1" else killall -9 "$1" fi fi } ############################################################################ # Name: ErrorMsg # Description: To display error message ############################################################################ ErrorMsg() { echo "$1" usage } ############################################################################################# # Name: catchCTRL_C # Description: Cleanup all the processes spawned by script when user interrupts using CTRL+C ############################################################################################# catchCTRL_C() { export DISPLAY=:0.0 xset dpms force on modetest -D fd4a0000.zynqmp-display -w 35:alpha:255 restoreContext exit 0 } ############################################################################################## # Name: RegSetting # Description: Set QoS of the AFI ports to be best effort where VCU is connected and # set outstanding read/write requests for AFI ports where VCU is connected to 16 ############################################################################################## RegSetting () { # Qos = 3 for VCU devmem 0xfd3b0008 w 0x3 #DEC0, DEC1<->HP3_FPD devmem 0xfd3b001c w 0x3 devmem 0xfd3b0004 w 0xf devmem 0xfd3b0018 w 0xf devmem 0xfd390008 w 0x3 #ENC1<->HP1_FPD devmem 0xfd39001c w 0x3 devmem 0xfd390004 w 0xf devmem 0xfd390018 w 0xf devmem 0xfd3a0008 w 0x3 #ENC0<->HP2_FPD devmem 0xfd3a001c w 0x3 devmem 0xfd3a0004 w 0xf devmem 0xfd3a0018 w 0xf devmem 0xfd360008 w 0x3 #MCU<->HPC0 devmem 0xfd36001c w 0x3 devmem 0xfd360004 w 0x7 devmem 0xfd360018 w 0x7 } ############################################################################################## # Name: restoreContext # Description: Restore the display and audio settings to previous state ############################################################################################## restoreContext () { if [ $DPMS == "off" ] ; then xset s on +dpms fi if [ $PULSEAUDIO == "off" ]; then pulseaudio --start -D fi } ############################################################################################## # Name: DisableDPMS # Description: Disable Display power management subsystem and screen saver ############################################################################################## DisableDPMS () { pidof "Xorg" > "/dev/null" 2>&1 if [ $? -eq 0 ]; then export DISPLAY=:0.0 xset s off -dpms DPMS="off" fi } ############################################################################################# # Name: restartPulseAudio # Description: Restarts the PulseAudioDaemon so that previous handles to device are released ############################################################################################## restartPulseAudio () { if ! [ -z $AUDIODEC_TYPE ]; then which pulseaudio > "/dev/null" 2>&1 if [ $? -eq 0 ]; then pulseaudio --check if [ $? -eq 0 ]; then pulseaudio -k PULSEAUDIO="off" fi if [ $AUDIO_SRC_BASE == "pulsesrc" ] || [ $AUDIO_SINK_BASE == "pulsesink" ]; then pulseaudio --start -D PULSEAUDIO="on" fi fi fi } ##################################################################################### # Name: audioSetting # Description: Set the volume for DP codec to maximum ###################################################################################### audioSetting () { devmem 0xFD4AC000 32 0xffffffff which amixer > /dev/null if [ $? -eq 0 ]; then amixer sset 'Master' 100% amixer sset 'Capture' 100% fi } ######################################################################################### # Name: runGstPipeline # Argument: Gstreamer pipeline string # Description: Runs the gstreamer pipeline as per the element property values selected # by user or using default property value if not provided by user ######################################################################################### runGstPipeline () { pipeline=$1 echo $pipeline eval "$pipeline"& PID=$! wait $PID } ######################################################################################### # Name: download # Argument: Input file to download # Description: Downloads the file passed as an argument using retries if needed ######################################################################################### download() { if ! [ -f $INPUT_PATH ]; then if [ -f ~/.bashrc ]; then source ~/.bashrc fi download_complete=0 for i in `seq 1 6`; do echo "Try #$i for download" wget -c -T7 $1 -P $DEFAULT_INPUT_PATH if [ $? -eq 0 ];then echo "Download completed" download_complete=1 break; else echo "No connection, Retrying..." fi done if [ $download_complete -eq 0 ]; then if [ -f $INPUT_PATH ]; then echo "Deleting partially downloaded file" rm $INPUT_PATH sync fi ErrorMsg "File $INPUT_PATH was not found and downloading it from server also failed" fi else echo "Previously downloaded file present in $INPUT_PATH" fi } ######################################################################################### # Name: installYoutubeDl # Argument: None # Description: Install youtube_dl if not found on board ######################################################################################### installYoutubeDl () { which youtube-dl if [ $? -ne 0 ]; then which pip3 if [ $? -ne 0 ]; then ErrorMsg "pip3 command not found, Please install pip3" fi if [ -z $PROXY ]; then pip3 install youtube_dl else pip3 install youtube_dl --proxy $PROXY fi if [ $? -ne 0 ]; then ErrorMsg "Unable to download youtube_dl, Please check network connectivity" fi fi } ######################################################################################### # Name: getInputFile # Argument: None # Description: Downloads input file from server if not found in default paths ######################################################################################### getInputFile () { if [ $NEED_DOWNLOAD -eq 1 ]; then if [[ $DEFAULT_URL = *www.youtube.com* ]]; then YOUTUBE_LINK=1 installYoutubeDl else download $DEFAULT_URL fi fi } ######################################################################################### # Name: setAudioSrcProps # Argument: None # Description: Set AudioSrc properties like capture device and buffers to be played ######################################################################################### setAudioSrcProps () { if ! [ -z $AUDIO_BUFFERS ]; then if [ $AUDIO_SRC == "autoaudiosrc" ]; then echo "NOTE: You may have to exit manually as -n/num-frames only supported with use-alsasrc or use-pulsesink options" fi fi if [ $AUDIO_SRC != "autoaudiosrc" ]; then if ! [ -z $INPUT_PATH ]; then AUDIO_SRC="$AUDIO_SRC device=\"$INPUT_PATH\"" fi if ! [ -z $AUDIO_BUFFERS ]; then AUDIO_SRC="$AUDIO_SRC num-buffers=$AUDIO_BUFFERS" fi fi AUDIO_SRC="$AUDIO_SRC do-timestamp=true" } ######################################################################################### # Name: setDefaultifEmpty # Argument: Name of the property whose default value needs to be set if it's empty # Description: Sets default values for the properties not filled by user via commandline ######################################################################################### setDefaultifEmpty () { PROPERTY=$1 case $PROPERTY in inputPath ) if [ -z $INPUT_PATH ]; then INPUT_PATH="$DEFAULT_INPUT_PATH/bbb_sunflower_2160p_30fps_normal.mp4" echo "No input file path was specified so trying to use $INPUT_PATH as default input file" fi ;; downloadUrl ) if [ -z $DEFAULT_URL ]; then #Download by default only if no input file present in rootfs at /usr/share/movies if ! [ -f $INPUT_PATH ]; then echo "File $INPUT_PATH was not found, so trying to download from server..." DEFAULT_INPUT_PATH="/home/root" if [ $CODEC_TYPE == "avc" ]; then DEFAULT_URL=$DEFAULT_URL_AVC else DEFAULT_URL=$DEFAULT_URL_HEVC fi FILENAME="${DEFAULT_URL##*/}" INPUT_PATH="$DEFAULT_INPUT_PATH/$FILENAME" NEED_DOWNLOAD=1 fi fi ;; videoSize ) if [ -z $VIDEO_SIZE ]; then VIDEO_SIZE="3840x2160" echo "Video Size is not specified in args hence using 3840x2160 as default value" fi ;; v4l2Device ) if [ -z $V4L2_DEVICE ]; then V4L2_DEVICE="/dev/video0" V4L2SRC="$V4L2SRC device=$V4L2_DEVICE" echo "V4L2 device node is not specified in args hence assuming $V4L2_DEVICE as default capture device" fi if ! [ -e $V4L2_DEVICE ]; then ErrorMsg "No camera device found at $V4L2_DEVICE, please give correct path and try again" else echo "No input file path was specified so using $V4L2_DEVICE as default input file" fi ;; displayDevice ) if [ -z $DISPLAY_DEVICE ]; then DISPLAY_DEVICE="fd4a0000.zynqmp-display" echo "DRM display device is not specified in args hence assuming $DISPLAY_DEVICE as default DRM device" fi ;; sinkName ) if [ -z $SINK_NAME ]; then SINK_NAME="kmssink bus-id="$DISPLAY_DEVICE" fullscreen-overlay=1" fi ;; codecType ) if [ -z $CODEC_TYPE ]; then echo "No codec type specified for $FILE_NAME hence assuming avc as default codec" CODEC_TYPE="avc" fi ;; portNum ) if [ -z $PORT_NUM ]; then PORT_NUM=50000 echo "No port number specified hence using $PORT_NUM as default" fi ;; frameRate ) if [ -z $FRAME_RATE ]; then FRAME_RATE=30 echo "No frame rate specified hence assuming $FRAME_RATE as default" fi ;; bufferSize ) if [ -z $BUFFER_SIZE ]; then BUFFER_SIZE="60000000" echo "No input buffer size specified hence using $BUFFER_SIZE as default size for kernel recieved buffer" fi ;; gopLength ) if [ -z $GOP_LENGTH ]; then GOP_LENGTH="60" echo "No "gop-length" parameter value specified hence using $GOP_LENGTH as default for encoding the input stream" fi ;; periodicityIdr ) if [ -z $PERIODICITY_IDR ]; then PERIODICITY_IDR="60" echo "No "periodicity-idr" parameter value specified hence using $PERIODICITY_IDR as default for encoding input stream" fi ;; cpbSize ) if [ -z $CPB_SIZE ]; then CPB_SIZE="3000" echo "No "cpbSize" parameter value specified hence using $CPB_SIZE as default for encoding input stream" fi ;; targetBitrate ) if [ -z $BIT_RATE ]; then if [ $CODEC_TYPE == "avc" ]; then BIT_RATE=5500 else BIT_RATE=8000 fi echo "No bit-rate specified hence using $BIT_RATE as default" fi ;; ipaddress ) if [ -z $ADDRESS ]; then ADDRESS="192.168.0.2" echo "No host address specified hence using $ADDRESS as default host address" fi ;; * ) echo ' Invalid option'; esac } ##################################################################################### # Name: DisplayUsage # Argument: Usecase property for which usage has to be print # Description: Display usage for argument passed to the function ###################################################################################### DisplayUsage () { declare -a arr=("${@}") for i in "${arr[@]}" do DisplayUsageFor "$i" done } ##################################################################################### # Name: updateVar # Argument: None # Description: Update Variables whose properties required to be changed as per parsed args ###################################################################################### updateVar () { if [[ $VIDEO_SIZE == "7680x4320" || -n $SET_ENTROPY_BUF ]]; then OMXH265DEC="$OMXH265DEC internal-entropy-buffers=$INTERNAL_ENTROPY_BUFFERS" OMXH264DEC="$OMXH264DEC internal-entropy-buffers=$INTERNAL_ENTROPY_BUFFERS" fi } ##################################################################################### # Name: killDuplicateProcess # Argument: None # Description: Kill Duplicate process spawned before with same args ###################################################################################### killDuplicateProcess () { partial_download=0 if [ -f $INPUT_PATH ]; then fuser $INPUT_PATH if [ $? -eq 0 ]; then partial_download=1 echo "Found partially downloaded file, forcing a redownload..." fi fi #Exit if same process was spawned already for pid in $(pidof -x $0); do if [ $pid != $$ ]; then pgid=`ps -o pid,pgid | grep $pid | awk -F ' ' '{print $2}'` ps -o pid | grep -v grep | grep "$pgid" > "/dev/null" if [ $? -eq 0 ]; then if ! [ -z $pgid ]; then echo "Killing duplicate VCU demo example" kill -9 $pgid fi fi fi done if [ $partial_download -eq 1 ]; then rm $INPUT_PATH sync fi } ##################################################################################### # Name: checkforEmptyVar # Argument: Array containing names of properties to be checked # Description: Check if user has provided any value for each element in the array, # and set some default value if it is empty ###################################################################################### checkforEmptyVar () { declare -a arr=("${@}") for i in "${arr[@]}" do setDefaultifEmpty "$i" done } ##################################################################################### # Name: DisplayUsageFor # Argument: Usecase property for which usage has to be print # Description: Display usage for argument passed to the function ###################################################################################### DisplayUsageFor () { PROPERTY=$1 case $PROPERTY in inputPath ) echo ' -i or --input-path : Path to input file ' echo ' : Possible Values: ' echo ' : Default Value: "/usr/share/movies/bbb_sunflower_2160p_30fps_normal.mp4"' ;; downloadUrl ) echo ' -u or --url : Path to download URL for input file ' echo ' : Possible Values: ' echo ' : Default Value: petalinux.xilinx.com/sswreleases/video-files/bbb_sunflower_2160p_30fps_normal_avc_new.mp4 ' ;; outputPath ) echo ' -o or --output-path : Give path to output file ' echo ' : Possible Values: ' echo ' : Default Value: "Present working directory"' ;; videoSize ) echo ' -s or --video-size : Size of input video' echo ' : Possible Values: 1920x1080,3840x2160,1280x720 e.t.c' ;; sinkName ) echo ' -o or --sink-name : Type of sink to use' echo ' : Possible Values: kmssink,fakevideosink' echo ' : Default Value: kmssink' ;; showFps ) echo ' -f or --show-fps : Enable logs to display frames per second' echo ' : Enabled: Display fps when -f option is passed ' echo ' : Disabled: fps are not displayed' ;; v4l2Device ) echo ' -v or --video-capture-device : Set Video device node to be used as capture source' echo ' : Possible Values: "/dev/video0", "/dev/video1",..,/dev/videox" ' echo ' : Default Value : "/dev/video0"' ;; displayDevice ) echo ' -d or --display-device : Set DRM display device' echo ' : Possible Values: "fd4a0000.zynqmp-display"' echo ' : Default Value : "fd4a0000.zynqmp-display"' ;; loopVideo ) echo ' -l or --loop-video : Loop the pipeline to process video again from start after EOF' echo ' : Enabled: Seek back again to start of file after each iteration and decode' echo ' : Disabled: Input file is read and decoded only once' echo ' : NOTE: This option is only available for raw encoded streams like .h265/h264 data' ;; internalEntropyBuffers ) echo ' -e or --internal-entropy-buffers : Number of internal buffers used by the decoder' echo ' to smooth out entropy decoding performance.' echo ' Increasing this will improve performance while decoding high bitrate streams,' echo ' Decreasing this (to a minimum of 2) will decrease the memory footprint.' echo ' : Possibe values : 2 - 16' echo ' : Default: 5 (Set internally)' ;; codecType ) echo ' -c or --codec-type : Type of codec used for the input mp4/mkv file' echo ' : Possible Values: avc/hevc' echo ' : Default Value: avc' ;; audioType ) echo ' -a or --audio-type : Type of audio codec used for the input mp4/mkv file' echo ' : Possible Values: vorbis/aac' echo ' : Default Value: None' ;; numFrames ) echo ' -n or --num-frames : Number of frames to be processed by VCU' echo ' : Possible Values: 1000, 2000 e.t.c' echo ' : Default Value: infinite' ;; portNum ) echo ' -p or --port : The port number to which packetized stream has to be sent ' echo ' : Possible Values: 50000, 42000 e.t.c' echo ' : Default Value: "50000"' ;; gopLength ) echo ' --gop-length : Specifies the number of frames between two consecutive I frames ' echo ' : Possible Values: 30, 40, 50 e.t.c' echo ' : Default Value: 240"' ;; periodicityIdr ) echo ' --periodicity-idr : Specifies the number of frames between two consequtive IDR pictures ' echo ' : Possible Values: 30, 40, 50 e.t.c' echo ' : Default Value: 240"' ;; cpbSize ) echo ' --cpb-size : Specifies the Coded Picture Buffer size as specified in the HRD model in msec ' echo ' : Possible Values: 1000,2000,3000 e.t.c' echo ' : Default Value: 1000"' ;; bufferSize ) echo ' -b or --buffer-size : Size of kernel recieved buffer in bytes ' echo ' : Possible Values: 16000000, 17000000, 18000000 e.t.c' echo ' : Default Value: 16000000"' ;; frameRate ) echo ' -r or --frame-rate : Set the frame rate of the pipeline ' echo ' : Possible Values: 15, 30, 60 e.t.c' echo ' : Default Value: "30"' ;; targetBitrate ) echo ' -b or --bit-rate : Bitrate with which encoder should encode input raw data using constant bitrate mode' echo ' : Possible Values: 1000 (for 1Mbits/sec)' echo ' : 20000 (for 20Mbits/sec)' echo ' : 30000 (for 30Mbits/sec)' echo ' : 40000 (for 40Mbits/sec)' echo ' : 50000 (for 50Mbits/sec)' echo ' : and likewise' ;; ipaddress ) echo ' --address : Addess of host/ip/multicast group to send the packets to' echo ' : Possible Values: "192.168.1.101, 192.168.1.71, 192.168.2.112, 127.0.0.1 for loopback"' echo ' : Default Value: "192.168.0.2"' ;; proxyServer ) echo ' -p or --proxy : Specify a proxy in form [user:passwd@]proxy.server:port, (user:passwd to be set only if required by your server)' echo ' : Possible Values: "http://proxy.:"' ;; compressedMode ) echo ' --compressed-mode : Captures raw video from camera' ;; alsaSink ) echo ' --use-alsasink : Play audio using ALSA library API' ;; pulseSink ) echo ' --use-pulsesink : Play audio using pulseaudio library API' ;; alsaSrc ) echo ' --use-alsasrc : Capture audio using ALSA API' ;; pulseSrc ) echo ' --use-pulsesrc : Captures audio using pulseaudio library API' ;; audioOutput ) echo ' --audio-output : Selects audio output device' ;; mpegTs ) echo ' --use-mpegts : Use MPEG-TS as container' ;; * ) echo ' Invalid option'; esac } ##################################################################################### # Name: DisplayUsage # Argument: Usecase property for which usage has to be print # Description: Display usage for argument passed to the function ###################################################################################### parseCommandLineArgs () { eval set -- "${args}" while true; do case $1 in -h | --help) usage; exit 0; shift; ;; -i | --input-path) INPUT_PATH=$2; shift; shift; ;; -c | --codec-type) CODEC_TYPE=$2; shift; shift; ;; -u | --url) DEFAULT_URL=$2; FILENAME="${DEFAULT_URL##*/}" DEFAULT_INPUT_PATH="/home/root" INPUT_PATH="$DEFAULT_INPUT_PATH/$FILENAME" NEED_DOWNLOAD=1; shift; shift; ;; --audio-type) AUDIODEC_TYPE=$2; shift; shift; ;; -s | --video-size) VIDEO_SIZE=$2; shift; shift; ;; -o) SINK_NAME=$2; OUTPUT_PATH=$2; shift; shift; ;; --output-path) OUTPUT_PATH=$2; shift; shift; ;; --sink-name) SINK_NAME=$2; shift; shift; ;; -f | --show-fps) SHOW_FPS=1; shift; ;; -l | --loop-video) LOOP_VIDEO=1; shift; ;; -e | --internal-entropy-buffers) SET_ENTROPY_BUF="true" INTERNAL_ENTROPY_BUFFERS=$2; shift;shift; ;; -n | --num-frames) NUM_FRAMES=$2; shift;shift; ;; -b) BIT_RATE=$2; BUFFER_SIZE=$2 shift; shift; ;; -a) ADDRESS=$2; AUDIODEC_TYPE=$2 shift; shift; ;; --buffer-size) BUFFER_SIZE=$2 shift; shift; ;; --bit-rate) BIT_RATE=$2 shift; shift; ;; --address) ADDRESS=$2; shift; shift; ;; --gop-length) GOP_LENGTH=$2; shift; shift; ;; --periodicity-idr) PERIODICITY_IDR=$2; shift; shift; ;; --cpb-size) CPB_SIZE=$2; shift; shift; ;; -p) PORT_NUM=$2; PROXY=$2 shift; shift; ;; --port-num) PORT_NUM=$2; shift; shift; ;; -r | --frame-rate) FRAME_RATE=$2; shift; shift; ;; --proxy) PROXY=$2; shift; shift; ;; -v | --video-capture-device) V4L2_DEVICE=$2; V4L2SRC="$V4L2SRC device=$V4L2_DEVICE" shift; shift; ;; -d | --display-device) DISPLAY_DEVICE=$2; KMSSINK="kmssink bus-id=$DISPLAY_DEVICE fullscreen-overlay=1" shift; shift; ;; --compressed-mode) COMPRESSED_MODE=1; shift; ;; --use-alsasink) AUDIO_SINK="alsasink"; shift; ;; --use-pulsesink) AUDIO_SINK="pulsesink"; shift; ;; --use-alsasrc) AUDIO_SRC="alsasrc"; shift; ;; --use-pulsesrc) AUDIO_SRC="pulsesrc" shift; ;; --use-mpegts) MPEGTS=1 shift; ;; --audio-output) AUDIO_OUTPUT=$2; shift; shift; ;; --) shift; break; ;; *) usage; exit -1; esac done }