From 8bacaef950acdee06b5887697e45a3e3347e9f82 Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Thu, 28 May 2020 23:21:35 +0200
Subject: [PATCH 1/8] Fix imx477.h mode numers: 0123 -> 02103

---
 imx477_modes.h | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/imx477_modes.h b/imx477_modes.h
index a198632..46997f9 100644
--- a/imx477_modes.h
+++ b/imx477_modes.h
@@ -830,6 +830,22 @@ struct mode_def imx477_modes[] = {
       .term          = {0, 0},
       .black_level   = 256,
    },
+   {
+      .regs          = imx477_2028x1080_regs,
+      .num_regs      = NUM_ELEMENTS(imx477_2028x1080_regs),
+      .width         = 2028,
+      .height        = 1080,
+      .encoding      = 0,
+      .order         = BAYER_ORDER_RGGB,
+      .native_bit_depth = 12,
+      .image_id      = 0x2C,
+      .data_lanes    = 2,
+      .min_vts       = 1134,
+      .line_time_ns  = 0x31c4,
+      .timing        = {0, 0, 0, 0, 0},
+      .term          = {0, 0},
+      .black_level   = 256,
+   },
    {
       .regs          = imx477_2028x1520_regs,
       .num_regs      = NUM_ELEMENTS(imx477_2028x1520_regs),
@@ -847,17 +863,17 @@ struct mode_def imx477_modes[] = {
       .black_level   = 256,
    },
    {
-      .regs          = imx477_2028x1080_regs,
-      .num_regs      = NUM_ELEMENTS(imx477_2028x1080_regs),
-      .width         = 2028,
-      .height        = 1080,
+      .regs          = imx477_4056x3040_regs,
+      .num_regs      = NUM_ELEMENTS(imx477_4056x3040_regs),
+      .width         = 4056,
+      .height        = 3040,
       .encoding      = 0,
       .order         = BAYER_ORDER_RGGB,
       .native_bit_depth = 12,
       .image_id      = 0x2C,
       .data_lanes    = 2,
-      .min_vts       = 1134,
-      .line_time_ns  = 0x31c4,
+      .min_vts       = 3072,
+      .line_time_ns  = 0x5dc0,
       .timing        = {0, 0, 0, 0, 0},
       .term          = {0, 0},
       .black_level   = 256,

From e5ccb56db58bc6e95cac20e47e322d0b94d62c9d Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Thu, 28 May 2020 23:35:40 +0200
Subject: [PATCH 2/8] Adjust tools/gifen.sh for HQ camera

---
 tools/gifenc.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/gifenc.sh b/tools/gifenc.sh
index 662bb49..3a013f9 100755
--- a/tools/gifenc.sh
+++ b/tools/gifenc.sh
@@ -6,7 +6,8 @@
 palette="/tmp/palette.png"
 
 #filters="fps=15,scale=320:-1:flags=lanczos"
-filters="fps=25,scale=640:-1:flags=lanczos"
+#filters="fps=25,scale=640:-1:flags=lanczos"
+filters="fps=25,scale=1012:-1:flags=lanczos"
 
 ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
 ffmpeg -v warning -i $1 -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y $2

From 18b74096d2bae7e06e8ab0daea4b6a81b7849d2f Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Thu, 28 May 2020 23:40:42 +0200
Subject: [PATCH 3/8] Make camera_i2c callable from everywhere

---
 camera_i2c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/camera_i2c b/camera_i2c
index a977e5d..b009398 100755
--- a/camera_i2c
+++ b/camera_i2c
@@ -108,7 +108,7 @@ raspi-gpio set 45 a1
 #shutdown
 # you need this one: https://github.com/6by9/rpi3-gpiovirtbuf
 #raspi-gpio set 41 1
-./rpi3-gpiovirtbuf s 133 1
+`dirname $0`/rpi3-gpiovirtbuf s 133 1
 #LED
 #raspi-gpio set 32 1
 i2cdetect -y 0

From 05f086b3ddb097a518257179b13db9ecec0bdb72 Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Thu, 28 May 2020 23:42:45 +0200
Subject: [PATCH 4/8] Do camera_i2c GPIO stuff for 4. kernel only, use i2c-10
 for 5. kernel

---
 camera_i2c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/camera_i2c b/camera_i2c
index b009398..aa358cb 100755
--- a/camera_i2c
+++ b/camera_i2c
@@ -6,6 +6,7 @@
 
 # http://elinux.org/RPi_HardwareHistory#Board_Revision_History
 rev=`cat /proc/cpuinfo | grep Revision | awk '{print substr($NF,length($NF)-5,6)}'`
+r=`uname -r | head --bytes 1`
 echo "setting GPIO for board revsion: $rev"
 
 case $rev in
@@ -93,6 +94,9 @@ raspi-gpio set 2 dh
 
 'a02082'|'a22082'|'a020d3'|'9020e0'|'a03111'|'b03111'|'c03111'|'a03112'|'b03112'|'c03112')
 echo "Raspberry Pi3B / Pi3B+ / 3A / 4B(1G/2G/4G)"
+if [ "$r" = "4" ]
+then
+i2c=0
 # https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=120702&start=100
 # Pins 44&45 Alt1=i2c0, alt2=i2c1
 # i2c0 can be on pins 0 and 1, so make sure they are not set to alt0
@@ -106,15 +110,23 @@ raspi-gpio set 44 a1
 raspi-gpio set 45 ip
 raspi-gpio set 45 a1
 #shutdown
+else
+i2c=10
+fi
 # you need this one: https://github.com/6by9/rpi3-gpiovirtbuf
 #raspi-gpio set 41 1
 `dirname $0`/rpi3-gpiovirtbuf s 133 1
 #LED
 #raspi-gpio set 32 1
-i2cdetect -y 0
+i2cdetect -y $i2c
 ;;
 
 *)
 echo "Failed: don't know how to set GPIO for this board!"
 ;;
 esac
+
+if [ "$r" = "5" ]
+then
+echo "Use 'raspiraw -y 10' to communicate with the sensor"
+fi

From 35bb4a83dd4feba7533356283e83a610d9eae547 Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Thu, 28 May 2020 23:47:37 +0200
Subject: [PATCH 5/8] Add simple tools for all HQ camera modes

---
 tools/1012x760  | 39 +++++++++++++++++++++++++++++++++++++++
 tools/2028x1080 | 39 +++++++++++++++++++++++++++++++++++++++
 tools/2028x1520 | 39 +++++++++++++++++++++++++++++++++++++++
 tools/4056x3040 | 39 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 156 insertions(+)
 create mode 100755 tools/1012x760
 create mode 100755 tools/2028x1080
 create mode 100755 tools/2028x1520
 create mode 100755 tools/4056x3040

diff --git a/tools/1012x760 b/tools/1012x760
new file mode 100755
index 0000000..33cd6e4
--- /dev/null
+++ b/tools/1012x760
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+if [ "$1" = "" ]; then echo "format: `basename $0` ms"; exit; fi
+
+r=`uname -r | head --bytes 1`
+if [ "$r" = "4" ]; then i2c=0; else i2c=10; fi
+
+echo "removing /dev/shm/out.*.raw"
+rm -f /dev/shm/out.*.raw
+
+if [ "$2" = "" ]; then fps=195; else fps=$2; fi
+echo "capturing frames for ${1}ms with ${fps}fps requested"
+raspiraw -md 4 -y $i2c -vf -hf -t $1 -ts tstamps.dirty -hd0 hd0.32k -sr 1 -o /dev/shm/out.%04d.raw 2>/dev/null >/dev/null
+
+grep -v ",0$" tstamps.dirty | grep -v ",-[0-9]*$" > tstamps.csv
+
+us=`cut -f1 -d, tstamps.csv | sort -n | uniq -c | sort -n | tail -1 | cut -b9-`
+l=`wc --lines tstamps.csv | cut -f1 -d\ `
+echo -e "$l frames were captured\nmajority framerate $((1000000 / $us))fps" 
+
+echo "frame delta time[us] distribution"
+cut -f1 -d, tstamps.csv | sort -n | uniq -c
+
+D=`echo "0123456789" | sed "s/\`echo $((1000000/$fps)) | cut -b1\`//"`
+
+echo "after skip frame indices (middle column)"
+grep "^[$D]" tstamps.csv | sed "s/^/> /"
+
+skips=`grep "^[$D]" tstamps.csv | wc --lines | cut -f1 -d\ `
+stamps=`wc --lines tstamps.csv | cut -f1 -d\ `
+per=`expr \( 100 \* $skips \) / \( $skips + $stamps \)`
+echo "$per% frame skips"
+
+fst=`head -1 tstamps.csv | cut -f3 -d,`
+lst=`tail -1 tstamps.csv | cut -f3 -d,`
+dif=`expr $lst - $fst`
+dif2=`expr $dif / 2`
+avg=`expr \( 1000000 \* \( $l - 1 \) + $dif2 \) / $dif`
+echo "average framerate ${avg}fps"
diff --git a/tools/2028x1080 b/tools/2028x1080
new file mode 100755
index 0000000..2d5d8ca
--- /dev/null
+++ b/tools/2028x1080
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+if [ "$1" = "" ]; then echo "format: `basename $0` ms"; exit; fi
+
+r=`uname -r | head --bytes 1`
+if [ "$r" = "4" ]; then i2c=0; else i2c=10; fi
+
+echo "removing /dev/shm/out.*.raw"
+rm -f /dev/shm/out.*.raw
+
+if [ "$2" = "" ]; then fps=57; else fps=$2; fi
+echo "capturing frames for ${1}ms with ${fps}fps requested"
+raspiraw -md 1 -y $i2c -vf -hf -t $1 -ts tstamps.dirty -hd0 hd0.32k -sr 1 -o /dev/shm/out.%04d.raw 2>/dev/null >/dev/null
+
+grep -v ",0$" tstamps.dirty | grep -v ",-[0-9]*$" > tstamps.csv
+
+us=`cut -f1 -d, tstamps.csv | sort -n | uniq -c | sort -n | tail -1 | cut -b9-`
+l=`wc --lines tstamps.csv | cut -f1 -d\ `
+echo -e "$l frames were captured\nmajority framerate $((1000000 / $us))fps" 
+
+echo "frame delta time[us] distribution"
+cut -f1 -d, tstamps.csv | sort -n | uniq -c
+
+D=`echo "0123456789" | sed "s/\`echo $((1000000/$fps)) | cut -b1\`//"`
+
+echo "after skip frame indices (middle column)"
+grep "^[$D]" tstamps.csv | sed "s/^/> /"
+
+skips=`grep "^[$D]" tstamps.csv | wc --lines | cut -f1 -d\ `
+stamps=`wc --lines tstamps.csv | cut -f1 -d\ `
+per=`expr \( 100 \* $skips \) / \( $skips + $stamps \)`
+echo "$per% frame skips"
+
+fst=`head -1 tstamps.csv | cut -f3 -d,`
+lst=`tail -1 tstamps.csv | cut -f3 -d,`
+dif=`expr $lst - $fst`
+dif2=`expr $dif / 2`
+avg=`expr \( 1000000 \* \( $l - 1 \) + $dif2 \) / $dif`
+echo "average framerate ${avg}fps"
diff --git a/tools/2028x1520 b/tools/2028x1520
new file mode 100755
index 0000000..a48b006
--- /dev/null
+++ b/tools/2028x1520
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+if [ "$1" = "" ]; then echo "format: `basename $0` ms"; exit; fi
+
+r=`uname -r | head --bytes 1`
+if [ "$r" = "4" ]; then i2c=0; else i2c=10; fi
+
+echo "removing /dev/shm/out.*.raw"
+rm -f /dev/shm/out.*.raw
+
+if [ "$2" = "" ]; then fps=41; else fps=$2; fi
+echo "capturing frames for ${1}ms with ${fps}fps requested"
+raspiraw -md 2 -y $i2c -vf -hf -t $1 -ts tstamps.dirty -hd0 hd0.32k -sr 1 -o /dev/shm/out.%04d.raw 2>/dev/null >/dev/null
+
+grep -v ",0$" tstamps.dirty | grep -v ",-[0-9]*$" > tstamps.csv
+
+us=`cut -f1 -d, tstamps.csv | sort -n | uniq -c | sort -n | tail -1 | cut -b9-`
+l=`wc --lines tstamps.csv | cut -f1 -d\ `
+echo -e "$l frames were captured\nmajority framerate $((1000000 / $us))fps" 
+
+echo "frame delta time[us] distribution"
+cut -f1 -d, tstamps.csv | sort -n | uniq -c
+
+D=`echo "0123456789" | sed "s/\`echo $((1000000/$fps)) | cut -b1\`//"`
+
+echo "after skip frame indices (middle column)"
+grep "^[$D]" tstamps.csv | sed "s/^/> /"
+
+skips=`grep "^[$D]" tstamps.csv | wc --lines | cut -f1 -d\ `
+stamps=`wc --lines tstamps.csv | cut -f1 -d\ `
+per=`expr \( 100 \* $skips \) / \( $skips + $stamps \)`
+echo "$per% frame skips"
+
+fst=`head -1 tstamps.csv | cut -f3 -d,`
+lst=`tail -1 tstamps.csv | cut -f3 -d,`
+dif=`expr $lst - $fst`
+dif2=`expr $dif / 2`
+avg=`expr \( 1000000 \* \( $l - 1 \) + $dif2 \) / $dif`
+echo "average framerate ${avg}fps"
diff --git a/tools/4056x3040 b/tools/4056x3040
new file mode 100755
index 0000000..6d98a2a
--- /dev/null
+++ b/tools/4056x3040
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+if [ "$1" = "" ]; then echo "format: `basename $0` ms"; exit; fi
+
+r=`uname -r | head --bytes 1`
+if [ "$r" = "4" ]; then i2c=0; else i2c=10; fi
+
+echo "removing /dev/shm/out.*.raw"
+rm -f /dev/shm/out.*.raw
+
+if [ "$2" = "" ]; then fps=11; else fps=$2; fi
+echo "capturing frames for ${1}ms with ${fps}fps requested"
+raspiraw -md 3 -y $i2c -vf -hf -t $1 -ts tstamps.dirty -hd0 hd0.32k -sr 1 -o /dev/shm/out.%04d.raw 2>/dev/null >/dev/null
+
+grep -v ",0$" tstamps.dirty | grep -v ",-[0-9]*$" > tstamps.csv
+
+us=`cut -f1 -d, tstamps.csv | sort -n | uniq -c | sort -n | tail -1 | cut -b9-`
+l=`wc --lines tstamps.csv | cut -f1 -d\ `
+echo -e "$l frames were captured\nmajority framerate $((1000000 / $us))fps" 
+
+echo "frame delta time[us] distribution"
+cut -f1 -d, tstamps.csv | sort -n | uniq -c
+
+D=`echo "0123456789" | sed "s/\`echo $((1000000/$fps)) | cut -b1\`//"`
+
+echo "after skip frame indices (middle column)"
+grep "^[$D]" tstamps.csv | sed "s/^/> /"
+
+skips=`grep "^[$D]" tstamps.csv | wc --lines | cut -f1 -d\ `
+stamps=`wc --lines tstamps.csv | cut -f1 -d\ `
+per=`expr \( 100 \* $skips \) / \( $skips + $stamps \)`
+echo "$per% frame skips"
+
+fst=`head -1 tstamps.csv | cut -f3 -d,`
+lst=`tail -1 tstamps.csv | cut -f3 -d,`
+dif=`expr $lst - $fst`
+dif2=`expr $dif / 2`
+avg=`expr \( 1000000 \* \( $l - 1 \) + $dif2 \) / $dif`
+echo "average framerate ${avg}fps"

From d05c4a62ae1f5996783c4c66843620a2c2e75da8 Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Fri, 29 May 2020 00:02:04 +0200
Subject: [PATCH 6/8] =?UTF-8?q?Correct=20line=5Ftime=5Fns=20from=2024000?=
 =?UTF-8?q?=C2=B5s=20to=2028571,=20based=20on=20raspistill=20I2C=20capture?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 imx477_modes.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/imx477_modes.h b/imx477_modes.h
index 46997f9..67b288c 100644
--- a/imx477_modes.h
+++ b/imx477_modes.h
@@ -825,7 +825,7 @@ struct mode_def imx477_modes[] = {
       .image_id      = 0x2C,
       .data_lanes    = 2,
       .min_vts       = 3072,
-      .line_time_ns  = 0x5dc0,
+      .line_time_ns  = 28571,
       .timing        = {0, 0, 0, 0, 0},
       .term          = {0, 0},
       .black_level   = 256,
@@ -873,7 +873,7 @@ struct mode_def imx477_modes[] = {
       .image_id      = 0x2C,
       .data_lanes    = 2,
       .min_vts       = 3072,
-      .line_time_ns  = 0x5dc0,
+      .line_time_ns  = 28571,
       .timing        = {0, 0, 0, 0, 0},
       .term          = {0, 0},
       .black_level   = 256,

From 650d2fc6260990df8042b12ea6ab1b961198a623 Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Sun, 31 May 2020 19:53:12 +0200
Subject: [PATCH 7/8] Add long_exposure tool for HQ camera 12MP captures up to
 239s exposure time. Tool allows to capture a single long_exposure, or many.

---
 imx477_modes.h      |  1 +
 raspiraw.c          | 14 ++++++++++++++
 tools/long_exposure | 13 +++++++++++++
 3 files changed, 28 insertions(+)
 create mode 100755 tools/long_exposure

diff --git a/imx477_modes.h b/imx477_modes.h
index 67b288c..c686b80 100644
--- a/imx477_modes.h
+++ b/imx477_modes.h
@@ -457,6 +457,7 @@ struct sensor_regs imx477_4056x3040_regs[] = {
       {0x0205, 0x00},
       {0x0340, 0x0c},
       {0x0341, 0x00},
+      {0x3100, 0x00},
       {0x0100, 0x01},
 };
 
diff --git a/raspiraw.c b/raspiraw.c
index d527420..496688b 100644
--- a/raspiraw.c
+++ b/raspiraw.c
@@ -2371,6 +2371,20 @@ void update_regs(const struct sensor_def *sensor, struct mode_def *mode, int hfl
 
 	if (sensor->exposure_reg && exposure != -1)
 	{
+		if (strcmp(sensor->name, "imx477") == 0 &&
+			mode->width == 4056 &&
+			exposure <= 128*65535)
+		{
+			uint16_t shift_reg = 0x3100;
+			int shr = 0;
+			while (exposure > 65535)
+			{
+				++shr;
+				exposure /= 2;
+			}
+			modReg(mode, shift_reg, 0, 2, shr, EQUAL);
+                }
+
 		if (exposure < 0 || exposure >= (1<<sensor->exposure_reg_num_bits))
 		{
 			vcos_log_error("Invalid exposure:%d, exposure range is 0 to %u!\n",
diff --git a/tools/long_exposure b/tools/long_exposure
new file mode 100755
index 0000000..23957f9
--- /dev/null
+++ b/tools/long_exposure
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+if [ "$1" = "" ]; then echo "format: `basename $0` us [#frames]"; exit; fi
+if [ "$2" = "" ]; then frames=1; else frames=$2; fi
+
+r=`uname -r | head --bytes 1`
+if [ "$r" = "4" ]; then i2c=0; else i2c=10; fi
+
+echo "removing /dev/shm/out.*.raw"
+rm -f /dev/shm/out.*.raw
+touch /dev/shm/out.0000.raw
+
+raspiraw -md 3 --expus $1 -y $i2c -vf -hf -t $(( 1500 + ( $frames * $1 ) / 1000 )) -ts tstamps.dirty -hd0 hd0.32k -sr 1 -o /dev/shm/out.%04d.raw  2>/dev/null >/dev/null

From ea458f9792517dfe7d55385a24d27cff9775cc2c Mon Sep 17 00:00:00 2001
From: HermannSW <hermann@stamm-wilbrandt.de>
Date: Fri, 2 Oct 2020 19:22:12 +0200
Subject: [PATCH 8/8] Enable framerate for 4056x3040 tool

---
 tools/4056x3040 | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/tools/4056x3040 b/tools/4056x3040
index 6d98a2a..54e93df 100755
--- a/tools/4056x3040
+++ b/tools/4056x3040
@@ -2,26 +2,35 @@
 
 if [ "$1" = "" ]; then echo "format: `basename $0` ms"; exit; fi
 
+hd () {
+  echo -n $1 | sed "s/\(.\)/\1\xa/g" > /tmp/n
+  local l=`echo -n $1 | wc --bytes`
+  echo -n `head -n $(($l-2)) /tmp/n` | sed "s/ //g"
+  echo -n .`tail -n -2 /tmp/n` | sed "s/ //g"
+}
+
 r=`uname -r | head --bytes 1`
 if [ "$r" = "4" ]; then i2c=0; else i2c=10; fi
 
 echo "removing /dev/shm/out.*.raw"
 rm -f /dev/shm/out.*.raw
 
-if [ "$2" = "" ]; then fps=11; else fps=$2; fi
+if [ "$2" = "" ]; then fps=11.38; else fps=$2; fi
 echo "capturing frames for ${1}ms with ${fps}fps requested"
-raspiraw -md 3 -y $i2c -vf -hf -t $1 -ts tstamps.dirty -hd0 hd0.32k -sr 1 -o /dev/shm/out.%04d.raw 2>/dev/null >/dev/null
+raspiraw -md 3 -y $i2c -vf -hf -t $1 --fps $fps -ts tstamps.dirty -hd0 hd0.32k -sr 1 -o /dev/shm/out.%04d.raw 2>/dev/null >/dev/null
 
 grep -v ",0$" tstamps.dirty | grep -v ",-[0-9]*$" > tstamps.csv
 
 us=`cut -f1 -d, tstamps.csv | sort -n | uniq -c | sort -n | tail -1 | cut -b9-`
 l=`wc --lines tstamps.csv | cut -f1 -d\ `
-echo -e "$l frames were captured\nmajority framerate $((1000000 / $us))fps" 
+echo -en "$l frames were captured\nmajority framerate "
+hd $((100000000 / $us))
+echo "fps" 
 
 echo "frame delta time[us] distribution"
 cut -f1 -d, tstamps.csv | sort -n | uniq -c
 
-D=`echo "0123456789" | sed "s/\`echo $((1000000/$fps)) | cut -b1\`//"`
+D=`echo "0123456789" | sed "s/\`echo $us | cut -b1\`//"`
 
 echo "after skip frame indices (middle column)"
 grep "^[$D]" tstamps.csv | sed "s/^/> /"
@@ -35,5 +44,7 @@ fst=`head -1 tstamps.csv | cut -f3 -d,`
 lst=`tail -1 tstamps.csv | cut -f3 -d,`
 dif=`expr $lst - $fst`
 dif2=`expr $dif / 2`
-avg=`expr \( 1000000 \* \( $l - 1 \) + $dif2 \) / $dif`
-echo "average framerate ${avg}fps"
+avg=`expr \( 100000000 \* \( $l - 1 \) + $dif2 \) / $dif`
+echo -n "average framerate "
+hd ${avg}
+echo "fps"