0,0 → 1,2144 |
#!/bin/bash |
# |
# $Rev$ $Date$ |
# |
# vcs |
# Video Contact Sheet *NIX: Generates contact sheets (previews) of videos |
# |
# Copyright (C) 2007 Toni Corvera |
# |
# This library 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. |
# |
# This library 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 this library; if not, write to the Free Software |
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
# |
# Author: Toni Corvera <outlyer@outlyer.net> |
# |
# References: |
# Pages from I've taken snippets or wrote code based on them. |
# I refer to them in comments as e.g. [[R1]]. [[R1#3]] Means section 3 in R1. |
# I also use internal references in the form [x1] (anchor -where to point-) |
# and [[x1]] (x-reference -point to what-). |
# [R0] getopt-parse.bash example, on Debian systems: |
# /usr/share/doc/util-linux/examples/getopt-parse.bash.gz |
# [R1] Bash (and other shells) tips |
# <http://wooledge.org/mywiki/BashFaq> |
# [R2] List of officially registered FOURCCs and WAVE Formats (aka wFormatTag) |
# <http://msdn2.microsoft.com/en-us/library/ms867195.aspx> |
# [R3] Unofficial list of FOURCCs |
# <http://www.fourcc.org/> |
# [R4] A php module with a list of FOURCCs and wFormatTag's mappings |
# <http://webcvs.freedesktop.org/clipart/experimental/rejon/getid3/getid3/module.audio-video.riff.php> |
# |
|
declare -r VERSION="1.0.7a" |
# {{{ # CHANGELOG |
# History (The full changelog was moved to a separate file and can be found |
# at <http://p.outlyer.net/vcs/files/CHANGELOG>). |
# |
# 1.0.7a: (2007-05-12) |
# * Print title *before* the highlights. |
# * Added the forgotten -O and -c to the help text (oops!) |
# * Experimental: Allow using non-latin alphabets by switching font. See -I. |
# It only affects the filename! Also allow overriding the font to be used |
# to print the filename ($font_filename). Right now only using a Mincho font, |
# it can be overriding by overriding $FONT_MINCHO. |
# * Make title font size independent of the timestamps size. And allow |
# overriding the title font ($font_title), font size ($pts_title) |
# and colours ($fg_title and $bg_title). |
# * Allow overriding the previews' background ($bg_contact) |
# * Added getopt, identify, sed, grep and egrep to the checked programs |
# * BUGFIX: Corrected test of accepted characters for intervals |
# * INTERNAL: New parsing code |
# * FEATURE: Replaced hard by soft shadows |
# * BUGFIX: Corrected console colour usage: Print the colours to the correct |
# channel |
# * Made tput (coloured console output) optional (AFAIK should be present in |
# any sane system though). |
# * FEATURE: Funky modes (more to come...): Polaroid, Film (rough, initial, |
# version), Photoframe and Random colours/fonts. (see --help) |
# * INTERNAL: Use /dev/shm as base tempdir if possible |
# * BUGFIX: Fixed safe_rename(): Don't assume current dir, added '--' to mv |
# * Added workaround for ffmpeg arguments order |
# * Allow getting the output of ffmpeg/mplayer (with $stdout and $stderr) |
# * INTERNAL: Renamed info() to inf() to eliminate ambiguities |
# * INTERNAL: guess_aspect() doesn't operate globally |
# * Reorganized help by alphabetical/rarity order |
# * FEATURE: Full milliseconds support (actually, full decimal point seconds), |
# timecode format extended to support e.g. 3m.24 (which means 00:03:00.240) |
# * BUGFIX/FEATURE: The number of extended captures is rounded to match the |
# standard columns (extended width matches standard) |
# * Made FOURCCs list case sensitive (the list has grown enough that I no |
# longer see a benefit in being ambigous) |
# * Added codec ids for On2's VP3, VP4, VP5 and VP6, TechSmith Screen Capture |
# Codec (Camtasia's) and Theora, expanded list of FOURCCs of Indeo's |
# codecs. |
# * Added -E / --end_offset / $end_offset, used to eliminate some |
# seconds from the end |
# * FEATURE: Anonymous mode (use --anonymous or -U0) |
# }}} # CHANGELOG |
|
set -e |
|
# {{{ # TODO |
|
# TODO / FIXME: |
# * [[R1#22]] states that not all bc versions understand '<', more info required |
# * [[x1]] Find out why the order of ffmpeg arguments breaks some files. |
# * [[x2]] Find out if egrep is safe to use or grep -E is more commonplace. |
# |
|
# }}} # TODO |
|
# {{{ # Constants |
|
# Configuration file, please, use this file to modify the behaviour of the |
# script. Using this allows overriding some variables (see below) |
# to your liking. Only lines with a variable assignment are evaluated, |
# it should follow bash syntax, note though that ';' can't be used |
# currently in the variable values; e.g.: |
# |
# # Sample configuration for vcs |
# user=myname # Sign all compositions as myname |
# bg_heading=gray # Make the heading gray |
# |
# There is a total of three configuration files than are loaded if the exist: |
# * /etc/vcs.conf: System wide conf, least precedence |
# * $CFGFILE (by default ~/.vcs.conf): Per-user conf, second least precedence |
# * ./vcs.conf: Per-dir confif, most precedence |
# |
# The variables that can be overriden are below the block of constants ahead. |
declare -r CFGFILE=~/.vcs.conf |
|
# see $decoder |
declare -ri DEC_MPLAYER=1 DEC_FFMPEG=3 |
# See $timecode_from |
declare -ri TC_INTERVAL=4 TC_NUMCAPS=8 |
# These can't be overriden, modify this line if you feel the need |
declare -r PROGRAM_SIGNATURE="Video Contact Sheet *NIX ${VERSION} <http://p.outlyer.net/vcs/>" |
# see $safe_rename_pattern |
declare -r DEFAULT_SAFE_REN_PATT="%b-%N.%e" |
# see $extended_factor |
declare -ri DEFAULT_EXT_FACTOR=4 |
# see $verbosity |
declare -ri V_ALL=5 V_NONE=-1 V_ERROR=1 V_WARN=2 V_INFO=3 |
# see $font_filename and $FONT_MINCHO |
declare -ri FF_DEFAULT=5 FF_MINCHO=7 |
# Indexes in $VID |
declare -ri W=0 H=1 FPS=2 LEN=3 VCODEC=4 ACODEC=5 VDEC=6 CHANS=7 |
# Exit codes, same numbers as /usr/include/sysexits.h |
declare -r EX_OK=0 EX_USAGE=64 EX_UNAVAILABLE=69 \ |
EX_NOINPUT=66 EX_SOFTWARE=70 EX_CANTCREAT=73 \ |
EX_INTERRUPTED=79 # This one is not on sysexits.h |
# The context allows the creator to identify which contact sheet it is creating |
# (CTX_*) HL: Highlight (-l), STD: Normal, EXT: Extended (-e) |
declare -ri CTX_HL=1 CTX_STD=2 CTX_EXT=3 |
|
# }}} # End of constants |
|
# {{{ # Override-able variables |
|
declare -i DEFAULT_INTERVAL=300 |
declare -i DEFAULT_NUMCAPS=16 |
declare -i DEFAULT_COLS=2 |
# Text before the user name in the signature |
declare user_signature="Preview created by" |
# By default sign as the system's username (see -u, -U) |
declare user=$(id -un) |
# Which of the two methods should be used to guess the number of thumbnails |
declare -i timecode_from=$TC_INTERVAL |
# Which of the two vidcappers should be used (see -F, -M) |
# mplayer seems to fail for mpeg or WMV9 files, at least on my system |
# also, ffmpeg allows better seeking: ffmpeg allows exact second.fraction |
# seeking while mplayer apparently only seeks to nearest keyframe |
declare -i decoder=$DEC_FFMPEG |
# Options used in imagemagick, these options set the final aspect |
# of the contact sheet |
declare output_format=png # ImageMagick decides the type from the extension |
declare -i output_quality=92 # Output image quality (only affects the final |
# image and obviously only in lossy formats) |
# Colours, see convert -list color to get the list |
declare bg_heading=YellowGreen # Background for meta info (size, codec...) |
declare bg_sign=SlateGray # Background for signature |
declare bg_title=White # Background for the title (see -T) |
declare bg_contact=White # Background of the thumbnails |
declare fg_heading=black # Font colour for meta info box |
declare fg_sign=black # Font colour for signature |
declare fg_tstamps=white # Font colour for timestamps |
declare fg_title=Black # Font colour fot the title |
# Fonts, see convert -list type to get the list |
declare font_tstamps=courier # Used for timestamps over the thumbnails |
declare font_heading=helvetica # Used for the heading (meta info box) |
declare font_sign=$font_heading # Used for the signature box |
# Unlike other font_ variables this doesn't take a font name directly |
# but is restricted to the $FF_ values. This is to allow overrides |
# from the command line to be placed anywhere, i.e. in |
# $ vcs -I file.avi -O 'FONT_MINCHO=whatever' |
# as the font is overridden is after requesting its use, it wouldn't be |
# affected |
# The other font_ variables are only affected by overrides and not command |
# line options that's why this one is special. |
declare font_filename=$FF_DEFAULT # Used to print only the filename in the heading |
declare font_title=$font_heading # Used fot the title (see -T) |
# Font sizes, in points |
declare -i pts_tstamps=18 # Used for the timestamps |
declare -i pts_meta=16 # Used for the meta info box |
declare -i pts_sign=11 # Used for the signature |
declare -i pts_title=36 # Used for the title (see -T) |
# See --shoehorn |
declare shoehorned= |
# See -E / $end_offset |
declare -i DEFAULT_END_OFFSET=60 |
# This can only be changed in the configuration file |
# Change it to change the safe renanimg: |
# When writing the output file, the input name + output extension is |
# used (e.g.: "some video.avi.png"), if it already exists, though, |
# a number if appended to the name. This variable dictates where the number is |
# placed. |
# By default "%b-%N.%e" where: |
# %b is the basename (file name without extension) |
# %N is the appended number |
# %e is the extension |
# The default creates outputs like "output.avi-1.png" |
# |
# If overridden with an incorrect value it will be silently set to the default |
declare safe_rename_pattern="$DEFAULT_SAFE_REN_PATT" |
# Controls how many extra captures will be created in the extended mode |
# (see -e), 0 is the same as disabling the extended mode |
# This number is multiplied by the total number of captures to get |
# the number of extra captures. So, e.g. -n2 -e2 leads to 4 extra captures. |
declare extended_factor=0 |
# Options added always to the ones in the command line |
# (command line options override them). |
# Note using this is a bit tricky :P mostly because I've no clue of how this |
# should be done. |
# As an example: you want to set always the title to "My Title" and output |
# to jpeg: default_options="-T'My Title' -j" |
#declare default_options= |
# Verbosity level so far from the command line can only be muted (see -q) |
# it can be overridden, though |
declare -i verbosity=$V_ALL |
# When set to 0 the status messages printed by vcs while running |
# are coloured if the terminal supports it. Set to 1 if this annoys you. |
declare -i plain_messages=0 |
# Experimental in 1.0.7b: |
# Experiment to get international font support |
# I'll need to get some help here, so if you use anything beyond a latin |
# alphabet, please help me choosing the correct fonts |
# To my understanding Ming/MinchÅ fonts should cover most of Japanse, |
# Chinese and Korean |
# Apparently Kochi Mincho should include Hangul *and* Cyrillic... which would be |
# great :) Although it couldn't write my hangul test, and also the default font |
# (helvetica) in my system seems to include cyrillic too, or at least a subset of |
# it. |
declare FONT_MINCHO=/usr/share/fonts/truetype/kochi/kochi-mincho.ttf |
# Output of capturing programs is redirected here |
declare stdout=/dev/null stderr=/dev/null |
|
# }}} # End of override-able variables |
|
# {{{ # Variables |
|
# Options and other internal usage variables, no need to mess with this! |
declare interval=$DEFAULT_INTERVAL # Interval of captures (=numsecs/numcaps) |
declare -i numcaps=$DEFAULT_NUMCAPS # Number of captures (=numsecs/interval) |
declare title="" |
declare fromtime=0 # Starting second (see -f) |
declare totime=-1 # Ending second (see -t) |
declare -a initial_stamps=( ) # Manually added stamps (see -S) |
declare -i th_height= # Height of the thumbnails, by default use same as input |
declare -i cols=$DEFAULT_COLS # Number of output columns |
declare -i manual_mode=0 # if 1, only command line timestamps will be used |
declare aspect_ratio=0 # If 0 no transformations done (see -a) |
# If -1 try to guess (see -A) |
|
declare -a TEMPSTUFF=( ) # Temporal files |
declare -a TIMECODES=( ) # Timestamps of the video captures |
declare -a HLTIMECODES=( ) # Timestamps of the highlights (see -l) |
|
declare VCSTEMPDIR= # Temporal directory, all temporal files |
# go there |
# This holds the output of mplayer -identify on the current video |
declare MPLAYER_CACHE= |
# This holds the parsed values of MPLAYER_CACHE, see also the Indexes in VID |
# (defined in the constants block) |
declare -a VID= |
|
# Workarounds: |
# Argument order in FFmpeg is important -ss before or after -i will make |
# the capture work or not depending on the file. See -Wo. |
# TODO: [x1]. |
# Admittedly the workaraound is abit obscure: those variables will be added to |
# the ffmpeg arguments, before and after -i, replacing spaces by the timestamp. |
# e.g.: for second 50 '-ss ' will become '-ss 50' while '' will stay empty |
# By default -ss goes before -i. |
declare wa_ss_af="" wa_ss_be="-ss " |
# This number of seconds is *not* captured from the end of the video |
declare -i end_offset=$DEFAULT_END_OFFSET |
|
# Experimental in 1.0.7b: transformations/filters |
# Operations are decomposed into independent optional steps, this will allow |
# to add some intermediate steps (e.g. polaroid mode) |
# Filters in this context are functions. |
# There're two kinds of filters and a delegate: |
# * individual filters are run over each vidcap |
# * global filters are run over all vidcaps at once |
# * The contact sheet creator delegates on some function to create the actual |
# contact sheet |
# |
# Individual filters take the form: |
# filt_name( vidcapfile, timestamp in seconds.milliseconds, width, height ) |
# They're executed in order by filter_vidcap() |
declare -a FILTERS_IND=( 'filt_resize' 'filt_apply_stamp' ) |
# Global filters take the form |
# filtall_name( vidcapfile1, vidcapfile2, ... ) |
# They're executed in order by filter_all_vidcaps |
declare -a FILTERS_CS=( ) |
# The contact sheet creators take the form |
# csheet_name( number of columns, context, width, height, vidcapfile1, |
# vidcapfile2, ... ) : outputfile |
# Context is one of the CTX_* constants (see below) |
# The width and height are those of an individual capture |
# It is executed by create_contact_sheet() |
declare CSHEET_DELEGATE=csheet_montage |
|
# Gravity of the timestamp (will be override-able in the future) |
declare grav_timestamp=SouthEast |
|
# When set to 1 the signature won't contain the "Preview created by..." line |
declare -i anonymous_mode=0 |
|
# }}} # Variables |
|
# {{{ # Configuration handling |
|
# These are the variables allowed to be overriden in the config file, |
# please. |
# They're REGEXes, they'll be concatenated to form a regex like |
# (override1|override2|...). |
# Don't mess with this unless you're pretty sure of what you're doing. |
# All this extra complexity is done to avoid including the config |
# file directly for security reasons. |
declare -ra ALLOWED_OVERRIDES=( |
'user' |
'user_signature' |
'bg_.*' |
'font_.*' |
'pts_.*' |
'fg_.*' |
'output_quality' |
'DEFAULT_INTERVAL' |
'DEFAULT_NUMCAPS' |
'DEFAULT_COLS' |
'decoder' |
'output_format' |
'shoehorned' |
'timecode_from' |
'safe_rename_pattern' |
# 'default_options' |
'extended_factor' |
'verbosity' |
'plain_messages' |
'FONT_MINCHO' |
'stdout' |
'stderr' |
'DEFAULT_END_OFFSET' |
) |
|
# This is only used to exit when -DD is used |
declare -i DEBUGGED=0 # It will be 1 after using -D |
|
# Loads the configuration files if present |
# load_config() |
load_config() { |
local CONFIGS=( /etc/vcs.conf $CFGFILE ./vcs.conf) |
|
for cfgfile in ${CONFIGS[*]} ;do |
if [ ! -f "$cfgfile" ]; then continue; fi |
|
while read line ; do # auto variable $line |
override "$line" "file $cfgfile" # Feeding it comments should be harmless |
done <$cfgfile |
done |
|
# Override-able hack, this won't work with command line overrides, though |
end_offset=$DEFAULT_END_OFFSET |
interval=$DEFAULT_INTERVAL |
numcaps=$DEAFULT_NUMCAPS |
} |
|
# Do an override |
# It takes basically an assignment (in the same format as bash) |
# to one of the override-able variables (see $ALLOWED_OVERRIDES). |
# There are some restrictions though. Currently ';' is not allowed to |
# be in the assignment. |
# override($1 = bash variable assignment, $2 = source) |
override() { |
local o="$1" |
local src="$2" |
|
local compregex=$( sed 's/ /|/g' <<<${ALLOWED_OVERRIDES[*]} ) |
|
# Don't allow ';', FIXME: dunno how secure that really is... |
# FIXME: ...it doesn't really works anyway |
if ! egrep -q '^[[:space:]]*[a-zA-Z_][a-zA-Z0-9_]*=[^;]*' <<<"$o" ; then |
return |
fi |
if ! egrep -q "^($compregex)=" <<<"$o" ; then |
return |
fi |
|
local varname=$(sed -r 's/^[[:space:]]*([a-zA-Z0-9_]*)=.*/\1/'<<<"$o") |
local varval=$(sed -r 's/[^=]*=(.*)/\1/'<<<"$o") |
# FIXME: Security! |
local curvarval= |
eval curvarval='$'"$varname" |
if [ "$curvarval" == "$varval" ]; then |
warn "Ignored override '$varname' (already had same value)" |
else |
eval "$varname=\"$varval\"" |
# FIXME: Only for really overridden ones |
warn "Overridden variable '$varname' from $src" |
fi |
} |
|
# }}} # Configuration handling |
|
# {{{ # Convenience functions |
|
# Returns true if input is composed only of numbers |
# is_number($1 = input) |
is_number() { |
egrep -q '^[0-9]+$' <<<"$1" |
} |
|
# Returns true if input can be parsed as a floating point number |
# Accepted: XX.YY XX. .YY (.24=0.24 |
# is_float($1 = input) |
is_float() { |
egrep -q '^([0-9]+\.?([0-9])?+|(\.[0-9]+))$'<<<"$1" |
} |
|
# Returns true if input is a fraction (*strictly*, i.e. "1" is not a fraction) |
# Only accepts XX/YY |
# is_fraction($1 = input) |
is_fraction() { |
egrep -q '^[0-9]+/[0-9]+$'<<<"$1" |
} |
|
# Makes a string lowercase |
# tolower($1 = string) |
tolower() { |
tr '[A-Z]' '[a-z]' <<<"$1" |
} |
|
|
# Rounded product |
# multiplies parameters and prints the result, rounded to the closest int |
# parameters can be separated by commas or spaces |
# e.g.: rmultiply 4/3,576 OR 4/3 576 = 4/3 * 576 = 768 |
# rmultiply($1 = operator1, [$2 = operator2, ...]) |
# rmultiply($1 = "operator1,operator2,...") |
rmultiply() { |
local exp=$(sed 's/[ ,]/*/g'<<<"$@") # bc expression |
#local f=$(bc -lq<<<"$exp") # exact float value |
# division is integer by default (without -l) so it's the smae |
# as rounding to the lower int |
#bc -q <<<"( $f + 0.5 ) / 1" |
bc -q <<<"scale=5; v=( ($exp) + 0.5 ) ; scale=0 ; v/1" |
} |
|
# Like rmultiply() but always rounded upwards |
ceilmultiply() { |
local exp=$(sed 's/[ ,]/*/g'<<<"$@") # bc expression |
local f=$(bc -lq<<<"$exp") # exact float value |
bc -q <<<"( $f + 0.999999999 ) / 1" |
} |
|
# Round to a multiple |
# Rounds a number ($1) to a multiple of ($2) |
# rtomult($1 = number, $2 = divisor) |
rtomult() { |
local n=$1 d=$2 |
local r=$(( $n % $d )) |
if [ $r -ne 0 ]; then |
let 'n += ( d - r )' |
fi |
echo $n |
} |
|
# numeric test eqivalent for floating point |
# fptest($1 = op1, $2 = operator, $3 = op2) |
fptest() { |
local op= |
case $2 in |
-gt) op='>' ;; |
-lt) op='<' ;; |
-ge) op='>=' ;; |
-le) op='<=' ;; |
-eq) op='==' ;; |
-ne) op='!=' ;; |
*) error "Internal error" && return $EX_SOFTWARE |
esac |
[ '1' == $(bc -q <<<"$1 $op $3") ] |
} |
|
# Applies the Pythagorean Theorem |
# pyth_th($1 = cathetus1, $2 = cathetus2) |
pyth_th() { |
bc -ql <<<"sqrt( $1^2 + $2^2)" |
} |
|
# Prints the width correspoding to the input height and the variable |
# aspect ratio |
# compute_width($1 = height) (=AR*height) (rounded) |
compute_width() { |
rmultiply $aspect_ratio,$1 |
} |
|
# Parse an interval and print the corresponding value in seconds |
# returns something not 0 if the interval is not recognized. |
# |
# The current code is a tad permissive, it allows e.g. things like |
# 10m1h (equivalent to 1h10m) |
# 1m1m (equivalent to 2m) |
# I don't see reason to make it more anal, though. |
# get_interval($1 = interval) |
get_interval() { |
if is_number "$1" ; then echo $1 ; return 0 ; fi |
|
local s=$(tolower "$1") t r |
|
# Only allowed characters |
if ! egrep -qi '^[0-9smh.]+$' <<<"$s"; then |
return $EX_USAGE; |
fi |
|
# New parsing code: replaces units by a product |
# and feeds the resulting string to bc |
t=$s |
t=$(sed -r 's/([0-9]+)h/ ( \1 * 3600 ) + /g' <<<$t) |
t=$(sed -r 's/([0-9]+)m/ ( \1 * 60 ) + /g' <<<$t) |
t=$(sed 's/s/ + /g' <<<$t) |
t=$(sed -r 's/\.\.+/./g'<<<$t) |
t=$(sed -r 's/(\.[0-9]+)/0\1 + /g' <<<$t) |
t=$(sed -r 's/\+ ?$//g' <<<$t) |
|
r=$(bc -lq <<<$t 2>/dev/null) # bc parsing fails with correct return code |
if [ -z "$r" ]; then |
return $EX_USAGE |
fi |
# Negative interval |
if [ "-" == ${r:0:1} ]; then |
return $EX_USAGE |
fi |
|
echo $r |
} |
|
# Pads a string with zeroes on the left until it is at least |
# the indicated length |
# pad($1 = minimum length, $2 = string) |
pad() { |
# printf "%0${1}d\n" "$2" # [[R1#18]] # Can't be used with non-numbers |
local str=$2 |
while [ "${#str}" -lt $1 ]; do |
str="0$str" |
done |
echo $str |
} |
|
# Get Image Width |
# imw($1 = file) |
imw() { |
identify "$1" | cut -d' ' -f3 | cut -d'x' -f1 |
} |
|
# Get Image Height |
# imh($1 = file) |
imh() { |
identify "$1" | cut -d' ' -f3 | cut -d'x' -f2 |
} |
|
# Prints a number of seconds in a more human readable form |
# e.g.: 3600 becomes 1:00:00 |
# pretty_stamp($1 = seconds) |
pretty_stamp() { |
if ! is_float "$1" ; then return $EX_USAGE ; fi |
|
local t=$1 |
#local h=$(( $t / 3600 )) |
# bc's modulus seems to *require* not using the math lib (-l) |
local h=$( bc -q <<<"$t / 3600") |
t=$(bc -q <<<"$t % 3600") |
local m=$( bc -q <<<"$t / 60") |
t=$(bc -q <<<"$t % 60") |
local s=$(cut -d'.' -f1 <<<$t) |
local ms=$(cut -d'.' -f2 <<<$t) |
|
local R="" |
|
if [ $h -gt 0 ]; then |
R+="$h:" |
fi |
# Right pad of decimal seconds |
if [ ${#ms} -lt 2 ]; then |
ms="${ms}0" |
fi |
R+=$(pad 2 "$m"):$(pad 2 $s).$ms |
|
# Trim (most) decimals |
sed -r 's/\.([0-9][0-9]).*/.\1/'<<<$R |
} |
|
# Prints the size of a file in a human friendly form |
# The units are in the IEC/IEEE/binary format (e.g. MiB -for mebibytes- |
# instead of MB -for megabytes-) |
# get_pretty_size($1 = file) |
get_pretty_size() { |
local f="$1" |
|
local bytes=$(du -DL --bytes "$f" | cut -f1) |
local size="" |
|
if [ "$bytes" -gt $(( 1024**3 )) ]; then |
local gibs=$(( $bytes / 1024**3 )) |
local mibs=$(( ( $bytes % 1024**3 ) / 1024**2 )) |
size="${gibs}.${mibs:0:2} GiB" |
elif [ "$bytes" -gt $(( 1024**2)) ]; then |
local mibs=$(( $bytes / 1024**2 )) |
local kibs=$(( ( $bytes % 1024**2 ) / 1024 )) |
size="${mibs}.${kibs:0:2} MiB" |
elif [ "$bytes" -gt 1024 ]; then |
local kibs=$(( $bytes / 1024 )) |
bytes=$(( $bytes % 1024 )) |
size="${kibs}.${bytes:0:2} KiB" |
else |
size="${bytes} B" |
fi |
|
echo $size |
} |
|
# Rename a file, if the target exists, try with appending numbers to the name |
# And print the output name to stdout |
# See $safe_rename_pattern |
# safe_rename($1 = original file, $2 = target file) |
# XXX: Note it fails if target has no extension |
safe_rename() { |
local from="$1" |
local to="$2" |
|
# Output extension |
local ext=$(sed -r 's/.*\.(.*)/\1/' <<<$to) |
# Input extension |
local iext=$(sed -r 's/.*\.(.*)/\1/' <<<$to) |
# Input filename without extension |
local b=${to%.$iext} |
|
# safe_rename_pattern is override-able, ensure it has a valid value: |
if ! grep -q '%e' <<<"$safe_rename_pattern" || |
! grep -q '%N' <<<"$safe_rename_pattern" || |
! grep -q '%b' <<<"$safe_rename_pattern" ; then |
safe_rename_pattern=$DEFAULT_SAFE_REN_PATT |
fi |
|
local n=1 |
while [ -f "$to" ]; do # Only executes if $2 exists |
to=$(sed "s#%b#$b#g" <<<"$safe_rename_pattern") |
to=$(sed "s#%N#$n#g" <<<"$to") |
to=$(sed "s#%e#$ext#g" <<<"$to") |
|
let 'n++'; |
done |
|
mv -- "$from" "$to" |
echo "$to" |
} |
|
# Tests the presence of all required programs |
# test_programs() |
test_programs() { |
local retval=0 last=0 |
for prog in getopt mplayer convert montage identify bc \ |
ffmpeg mktemp sed grep egrep cut; do |
type -pf "$prog" >/dev/null |
if [ $? -ne 0 ] ; then |
error "Required program $prog not found!" |
let 'retval++' |
fi |
done |
# TODO: [x2] |
|
return $retval |
} |
|
# Remove any temporal files |
# Does nothing if none has been created so far |
# cleanup() |
cleanup() { |
if [ -z $TEMPSTUFF ]; then return 0 ; fi |
inf "Cleaning up..." |
rm -rf ${TEMPSTUFF[*]} |
TEMPSTUFF=( ) |
} |
|
# Exit callback. This function is executed on exit (correct, failed or |
# interrupted) |
# exithdlr() |
exithdlr() { |
cleanup |
} |
|
# Feedback handling, these functions are use to print messages respecting |
# the verbosity level |
# Optional color usage added from explanation found in |
# <http://wooledge.org/mywiki/BashFaq> |
# |
# error($1 = text) |
error() { |
if [ $verbosity -ge $V_ERROR ]; then |
if [ $plain_messages -eq 0 ]; then |
tput bold ; tput setaf 1; |
fi |
# sgr0 is always used, this way if |
# a) something prints inbetween messages it isn't affected |
# b) if plain_messages is overridden colour stops after the override |
echo "$1" ; tput sgr0 |
fi >&2 |
# It is important to redirect both tput and echo to stderr. Otherwise |
# n=$(something) wouldn't be coloured |
} |
# |
# Print a non-fatal error or warning |
# warning($1 = text) |
warn() { |
if [ $verbosity -ge $V_WARN ]; then |
if [ $plain_messages -eq 0 ]; then |
tput bold ; tput setaf 3; |
fi |
echo "$1" ; tput sgr0 |
fi >&2 |
} |
# |
# Print an informational message |
# inf($1 = text) |
inf() { |
if [ $verbosity -ge $V_INFO ]; then |
if [ $plain_messages -eq 0 ]; then |
tput bold ; tput setaf 2; |
fi |
echo "$1" ; tput sgr0 |
fi >&2 |
} |
# |
# Same as inf but with no colour ever. |
# infplain($1 = text) |
infplain() { |
if [ $verbosity -ge $V_INFO ]; then |
echo "$1" >&2 |
fi |
} |
|
# }}} # Convenience functions |
|
# {{{ # Core functionality |
|
# Creates a new temporary directory |
# create_temp_dir() |
create_temp_dir() { |
# Try to use /dev/shm if available, this provided a very small |
# benefit on my system but me of help for huge files. Or maybe won't. |
if [ -d /dev/shm ] && [ -w /dev/shm ]; then |
VCSTEMPDIR=$(mktemp -d -p /dev/shm vcs.XXXXXX) |
else |
VCSTEMPDIR=$(mktemp -d -t vcs.XXXXXX) |
fi |
if [ ! -d "$VCSTEMPDIR" ]; then |
error "Error creating temporary directory" |
return $EX_CANTCREAT |
fi |
TEMPSTUFF+=( "$VCSTEMPDIR" ) |
} |
|
# Create a new temporal file and print its filename |
# new_temp_file($1 = suffix) |
new_temp_file() { |
local r=$(mktemp -p "$VCSTEMPDIR" "vcs-XXXXXX") |
if [ ! -f "$r" ]; then |
error "Failed to create temporary file" |
return $EX_CANTCREAT |
fi |
r=$(safe_rename "$r" "$r$1") || { |
error "Failed to create temporary file" |
return $EX_CANTCREAT |
} |
TEMPSTUFF+=( "$r" ) |
echo "$r" |
} |
|
# Randomizes the colours and fonts. The result won't be of much use |
# in most cases but it might be a good way to discover some colour/font |
# or colour combination you like. |
# randomize_look() |
randomize_look() { |
|
local mode=f lineno |
|
if [ "f" == $mode ]; then # Random mode |
# There're 5 rows of extra info printed |
local ncolours=$(( $(convert -list color | wc -l) - 5 )) |
randcolour() { |
lineno=$(( 5 + ( $RANDOM % $ncolours ) )) |
convert -list color | sed -n "${lineno}p" | cut -d' ' -f1 # [[R1#19]] |
} |
else # Pseudo-random mode, WIP! |
randccomp() { |
# colours are in the 0..65535 range, while RANDOM in 0..32767 |
echo $(( $RANDOM + $RANDOM + ($RANDOM % 1) )) |
} |
randcolour() { |
echo "rgb($(randccomp),$(randccomp),$(randccomp))" |
} |
fi |
|
local nfonts=$(( $(convert -list type | wc -l) - 5 )) |
randfont() { |
lineno=$(( 5 + ( $RANDOM % $nfonts ))) |
convert -list type | sed -n "${lineno}p" | cut -d' ' -f1 # [[R1#19]] |
} |
|
bg_heading=$(randcolour) |
bg_sign=$(randcolour) |
bg_title=$(randcolour) |
bg_contact=$(randcolour) |
fg_heading=$(randcolour) |
fg_sign=$(randcolour) |
fg_tstamps=$(randcolour) |
fg_title=$(randcolour) |
font_tstamps=$(randfont) |
font_heading=$(randfont) |
font_sign=$(randfont) |
font_title=$(randfont) |
inf "Randomization result: |
Chosen backgrounds: |
'$bg_heading' for the heading |
'$bg_sign' for the signature |
'$bg_title' for the title |
'$bg_contact' for the contact sheet |
Chosen font colours: |
'$fg_heading' for the heading |
'$fg_sign' for the signature |
'$fg_title' for the title |
'$fg_tstamps' for the timestamps, |
Chosen fonts: |
'$font_heading' for the heading |
'$font_sign' for the signature |
'$font_title' for the title |
'$font_tstamps' for the timestamps" |
|
unset -f randcolour randfound randccomp |
} |
|
# Add to $TIMECODES the timecodes at which a capture should be taken |
# from the current video |
# compute_timecodes($1 = timecode_from, $2 = interval, $3 = numcaps) |
compute_timecodes() { |
local st=0 end=${VID[$LEN]} tcfrom=$1 tcint=$2 tcnumcaps=$3 eo=0 |
# globals: fromtime, totime, timecode_from, TIMECODES, end_offset |
if fptest $st -lt $fromtime ; then |
st=$fromtime |
fi |
if fptest $totime -gt 0 && fptest $end -gt $totime ; then |
end=$totime |
fi |
if fptest $totime -le 0 ; then # If no totime is set, use end_offset |
eo=$end_offset |
|
local runlen=$( bc <<<"$end - $st" ) |
|
if fptest "($end-$eo-$st)" -le 0 ; then |
if fptest "$eo" -gt 0 && fptest "$eo" -eq "$DEFAULT_END_OFFSET" ; then |
warn "Default end offset was too high, ignoring it." |
eo=0 |
else |
error "End offset too high, use e.g. '-E0'." |
return $EX_UNAVAILABLE |
fi |
fi |
fi |
|
local inc= |
if [ "$tcfrom" -eq $TC_INTERVAL ]; then |
inc=$tcint |
elif [ "$tcfrom" -eq $TC_NUMCAPS ]; then |
# Numcaps mandates: timecodes are obtained dividing the length |
# by the number of captures |
if [ $tcnumcaps -eq 1 ]; then # Special case, just one capture, center it |
inc=$( bc -lq <<< "scale=3; ($end-$st)/2 + 1" ) |
else |
#inc=$(( ($end-$st) / $tcnumcaps )) |
# FIXME: The last second is avoided (-1) to get the correct caps number |
inc=$( bc -lq <<< "scale=3; ($end-$eo-$st)/$tcnumcaps" ) |
fi |
else |
error "Internal error" |
return $EX_SOFTWARE |
fi |
|
if fptest $inc -gt ${VID[$LEN]}; then |
error "Interval is longer than video length, skipping $f" |
return $EX_USAGE |
fi |
|
local LTC=( ) stamp=$st |
while fptest $stamp -le $(bc -q <<<"$end-$eo"); do |
if fptest $stamp -lt 0 ; then |
error "Internal error, negative timestamp calculated!" |
return $EX_SOFTWARE |
fi |
LTC+=( $stamp ) |
stamp=$(bc -q <<<"$stamp+$inc") |
done |
unset LTC[0] # Discard initial cap (=$st) |
TIMECODES=( ${TIMECODES[@]} ${LTC[@]} ) |
} |
|
# Tries to guess an aspect ratio comparing width and height to some |
# known values (e.g. VCD resolution turns into 4/3) |
# guess_aspect($1 = width, $2 = height) |
guess_aspect() { |
# mplayer's ID_ASPECT seems to be always 0 ¿? |
local w=$1 h=$2 ar |
if [ $w -eq 352 ]; then # VCD / DVD @ VCD Res. / Half-D1 / CVD |
if [ $h -eq 288 ] || [ $h -eq 240 ]; then |
ar=4/3 |
elif [ $h -eq 576 ] || [ $h -eq 480 ]; then # Half-D1 / CVD |
ar=4/3 |
fi |
elif [ $w -eq 704 ] || [ $w -eq 720 ]; then # DVD / DVB |
# Actually for 720x576/720x480 16/9 is as good a guess |
if [ $h -eq 576 ] || [ $h -eq 480 ]; then |
ar=4/3 |
fi |
elif [ $w -eq 480 ]; then # SVCD |
if [ $h -eq 576 ] || [ $h -eq 480 ]; then |
ar=4/3 |
fi |
else |
warn "Couldn't guess aspect ratio." |
ar="$w/$h" # Don't calculate it yet |
fi |
echo $ar |
} |
|
# Capture a frame |
# capture($1 = filename, $2 = second) |
capture() { |
local f=$1 stamp=$2 |
local VIDCAPFILE=00000001.png |
# globals: $shoehorned $decoder |
|
if [ $decoder -eq $DEC_MPLAYER ]; then |
{ |
mplayer -sws 9 -ao null -benchmark -vo "png:z=0" -quiet \ |
-frames 1 -ss $stamp $shoehorned "$f" |
} >"$stdout" 2>"$stderr" |
elif [ $decoder -eq $DEC_FFMPEG ]; then |
# XXX: It would be nice to show a message if it takes too long |
{ |
# See wa_ss_* declarations at the start of the file for details |
ffmpeg -y ${wa_ss_be/ / $stamp} -i "$f" ${wa_ss_af/ / $stamp} -an \ |
-dframes 1 -vframes 1 -vcodec png \ |
-f rawvideo $shoehorned $VIDCAPFILE |
# Used to test bogus files (e.g. to test codec ids) |
#convert -size 1x xc:black $VIDCAPFILE |
} >"$stdout" 2>"$stderr" |
else |
error "Internal error!" |
return $EX_SOFTWARE |
fi || { |
local retval=$? |
error "The capturing program failed!" |
return $retval |
} |
if [ ! -f "$VIDCAPFILE" ] || [ "0" == "$(du "$VIDCAPFILE" | cut -f1)" ]; then |
error "Failed to capture frame (at second $stamp)" |
return $EX_SOFTWARE |
fi |
|
return 0 |
} |
|
# Applies all individual vidcap filters |
# filter_vidcap($1 = filename, $2 = timestamp, $3 = width, $4 = height) |
filter_vidcap() { |
# For performance purposes each filter simply prints a set of options |
# to 'convert'. That's less flexible but enough right now for the current |
# filters. |
local cmdopts= |
for filter in ${FILTERS_IND[@]}; do |
cmdopts+=" $( $filter "$1" "$2" "$3" "$4" ) " |
done |
local t=$(new_temp_file .png) |
eval "convert '$1' $cmdopts '$t'" |
# If $t doesn't exist returns non-zero |
[ -f "$t" ] && mv "$t" "$1" |
} |
|
# Applies all global vidcap filters |
#filter_all_vidcaps() { |
# # TODO: Do something with "$@" |
# true |
#} |
|
filt_resize() { |
local f="$1" t=$2 w=$3 h=$4 |
|
# Note the '!', required to change the aspect ratio |
echo " \( -geometry ${w}x${h}! \) " |
} |
|
# Draw a timestamp in the file |
# filt_apply_stamp($1 = filename, $2 = timestamp, $3 = width, $4 = height) |
filt_apply_stamp() { |
local filename=$1 timestamp=$2 width=$3 height=$4 |
|
echo -n " \( -box '#000000aa' -fill '$fg_tstamps' -pointsize '$pts_tstamps' " |
echo -n " -gravity '$grav_timestamp' -stroke none -strokewidth 3 -annotate +5+5 " |
echo " ' $(pretty_stamp $stamp) ' \) -flatten " |
} |
|
# Apply a Polaroid-like effect |
# Taken from <http://www.imagemagick.org/Usage/thumbnails/#polaroid> |
# filt_photoframe($1 = filename, $2 = timestamp, $3 = width, $4 = height) |
filt_photoframe() { |
# local file="$1" ts=$2 w=$3 h=$4 |
# Tweaking the size gives a nice effect too |
# w=$(( $w - ( $RANDOM % ( $w / 3 ) ) )) |
# TODO: Split softshadow in a filter |
echo -n "-bordercolor white -border 6 -bordercolor grey60 -border 1 " |
echo -n "-background black \( +clone -shadow 60x4+4+4 \) +swap " |
echo "-background none -flatten -trim +repage" |
} |
|
# Applies a random rotation |
# Taken from <http://www.imagemagick.org/Usage/thumbnails/#polaroid> |
# filt_randrot($1 = filename, $2 = timestamp, $3 = width, $4 = height) |
filt_randrot() { |
# Rotation angle [-18..18] |
local angle=$(( ($RANDOM % 37) - 18 )) |
echo "-background none -rotate $angle " |
} |
|
# This one requires much more work, the results are pretty rough, but ok as |
# a starting point / proof of concept |
filt_film() { |
local file="$1" ts=$2 w=$3 h=$4 |
# Base reel dimensions |
local rw=$(rmultiply $w,0.08) # 8% width |
local rh=$(( $rw / 2 )) |
# Ellipse center |
local ecx=$(( $rw / 2 )) ecy=0 |
# Ellipse x, y radius |
local erx=$(( (rw/2)*60/100 )) # 60% halt rect width |
local ery=$(( $erx / 2)) |
|
local base_reel=$(new_temp_file .png) reel_strip=$(new_temp_file .png) |
|
# Create the reel pattern... |
convert -size ${rw}x${rh} 'xc:black' \ |
-fill white -draw "ellipse $ecx,$ecy $erx,$ery 0,360" -flatten \ |
\( +clone -flip \) -append \ |
-fuzz '40%' -transparent white \ |
"$base_reel" |
# FIXME: Error handling |
|
# Repeat it until the height is reached and crop to the exact height |
local sh=$(imh "$base_reel") in= |
local repeat=$( ceilmultiply $h/$sh) |
while [ $repeat -gt 1 ]; do |
in+=" '$base_reel' " |
let 'repeat--' |
done |
eval convert "$base_reel" $in -append -crop $(imw "$base_reel")x${h}+0+0 \ |
"$reel_strip" |
|
# As this options will be appended to the commandline we cannot |
# order the arguments optimally (eg: reel.png image.png reel.png +append) |
# A bit of trickery must be done flipping the image. Note also that the |
# second strip will be appended flipped, which is intended. |
echo -n "'$reel_strip' +append -flop '$reel_strip' +append -flop " |
} |
|
# Creates a contact sheet by calling the delegate |
# create_contact_sheet($1 = columns, $2 = context, $3 = width, $4 = height, |
# $5...$# = vidcaps) : output |
create_contact_sheet() { |
$CSHEET_DELEGATE "$@" |
} |
|
# This is the standard contact sheet creator |
# csheet_montage($1 = columns, $2 = context, $3 = width, $4 = height, |
# $5... = vidcaps) : output |
csheet_montage() { |
local cols=$1 ctx=$2 width=$3 height=$4 output=$(new_temp_file .png) |
shift 4 |
case $ctx in |
$CTX_STD|$CTX_HL) hpad=10 vpad=5 ;; |
$CTX_EXT) hpad=5 vpad=2 ;; |
*) error "Internal error" && return $EX_SOFTWARE ;; |
esac |
# Using transparent seems to make -shadow futile |
montage -background Transparent "$@" -geometry +$hpad+$vpad -tile "$cols"x "$output" |
# This produces soft-shadows, which look much better than the montage ones |
# |
convert \( -shadow 50x2+10+10 "$output" \) "$output" -composite "$output" |
|
# FIXME: Error handling |
echo $output |
} |
|
# Polaroid contact sheet creator: it overlaps vidcaps with some randomness |
# csheet_overlap($1 = columns, $2 = context, $3 = width, $4 = height, |
# $5... = $vidcaps) : output |
csheet_overlap() { |
local cols=$1 ctx=$2 width=$3 height=$4 |
# globals: $VID |
shift 4 |
|
# TBD: Handle context |
|
# Explanation of how this works: |
# On the first loop we do what the "montage" command would do (arrange the |
# images in a grid) but overlapping each image to the one on their left, |
# creating the output row by row, each row in a file. |
# On the second loop we append the rows, again overlapping each one to the |
# one before (above) it. |
# XXX: Compositing over huge images is quite slow, there's probably a |
# better way to do it |
|
# Offset bounds, this controls how much of each snap will be over the |
# previous one. Note it is important to work over $width and not $VID[$W] |
# to cover all possibilities (extended mode and -H change the vidcap size) |
local maxoffset=$(( $width / 3 )) |
local minoffset=$(( $width / 6 )) |
|
# Holds the files that will form the full contact sheet |
# each file is a row on the final composition |
local -a rowfiles=( ) |
|
# Dimensions of the canvas for each row, it should be big enough |
# to hold all snaps. |
# My trigonometry is pretty rusty but considering we restrict the angle a lot |
# I believe no image should ever be wider/taller than the diagonal (note the |
# ceilmultiply is there to simply round the result) |
local diagonal=$(ceilmultiply $(pyth_th $width $height) 1) |
# XXX: The width, though isn't guaranteed (e.g. using filt_film it ends wider) |
# adding 3% to the diagonal *should* be enough to compensate |
local canvasw=$(( ( $diagonal + $(rmultiply $diagonal,0.3) ) * $cols )) |
local canvash=$(( $diagonal )) |
|
# The number of rows required to hold all the snaps |
local numrows=$(ceilmultiply ${#@},1/$cols) # rounded division |
|
# Variables inside the loop |
local col # Current column |
local rowfile # Holds the row we're working on |
local offset # Random offset of the current snap [$minoffset..$maxoffset] |
local accoffset # The absolute (horizontal) offset used on the next iteration |
local cmdopts # Holds the arguments passed to convert to compose the sheet |
local w # Width of the current snap |
for row in $(seq 1 $numrows) ; do |
col=0 |
rowfile=$(new_temp_file .png) |
rowfiles+=( "$rowfile" ) |
accoffset=0 |
cmdopts= # This command is pretty time-consuming, let's make it in a row |
|
# Base canvas |
inf "Creating polaroid base canvas $row/$numrows..." |
convert -size ${canvasw}x${canvash} xc:transparent "$rowfile" |
|
# Step through vidcaps (col=[0..cols-1]) |
for col in $(seq 0 $(( $cols - 1 ))); do |
# More cols than files in the last iteration (e.g. -n10 -c4) |
if [ -z "$1" ]; then break; fi |
w=$(imw "$1") |
|
# Stick the vicap in the canvas |
#convert -geometry +${accoffset}+0 "$rowfile" "$1" -composite "$rowfile" |
cmdopts+=" -geometry +${accoffset}+0 '$1' -composite " |
|
offset=$(( $minoffset + ( $RANDOM % $maxoffset ) )) |
let 'accoffset=accoffset + w - offset' |
shift |
done |
inf "Composing polaroid row $row/$numrows..." |
eval convert "'$rowfile'" "$cmdopts" -trim +repage "'$rowfile'" >&2 |
done |
|
inf "Merging polaroid rows..." |
output=$(new_temp_file .png) |
# Standard composition |
#convert -background Transparent "${rowfiles[@]}" -append polaroid.png |
# Overlapped composition |
convert -size ${canvasw}x$(( $canvash * $cols )) xc:transparent "$output" |
cmdopts= |
accoffset=0 |
local h |
for row in "${rowfiles[@]}" ; do |
w=$(imw "$row") |
h=$(imh "$row") |
minoffset=$(( $h / 8 )) |
maxoffset=$(( $h / 4 )) |
offset=$(( $minoffset + ( $RANDOM % $maxoffset ) )) |
# The row is also offset horizontally |
cmdopts+=" -geometry +$(( $RANDOM % $maxoffset ))+$accoffset '$row' -composite " |
let 'accoffset=accoffset + h - offset' |
done |
# After the trim the top corners are too near the heading, we add some space |
# with -splce |
eval convert -background transparent "$output" $cmdopts -trim +repage \ |
-bordercolor Transparent -splice 0x10 "$output" >&2 |
|
# FIXME: Error handling |
echo $output |
} |
|
# Sorts timestamps and removes duplicates |
# clean_timestamps($1 = space separated timestamps) |
clean_timestamps() { |
# Note AFAIK sort only sorts lines, that's why y replace spaces by newlines |
local s=$1 |
sed 's/ /\n/g'<<<"$s" | sort -n | uniq |
} |
|
# Fills the $MPLAYER_CACHE and $VID variables with the video data |
# identify_video($1 = file) |
identify_video() { |
local f=$1 |
# Meta data extraction |
# Note to self: Don't change the -vc as it would affect $vdec |
MPLAYER_CACHE=$(mplayer -benchmark -ao null -vo null -identify -frames 0 -quiet "$f" 2>/dev/null | grep ^ID) |
VID[$VCODEC]=$(grep ID_VIDEO_FORMAT <<<"$MPLAYER_CACHE" | cut -d'=' -f2) # FourCC |
VID[$ACODEC]=$(grep ID_AUDIO_FORMAT <<<"$MPLAYER_CACHE" | cut -d'=' -f2) |
VID[$VDEC]=$(grep ID_VIDEO_CODEC <<<"$MPLAYER_CACHE" | cut -d'=' -f2) # Decoder (!= Codec) |
VID[$W]=$(grep ID_VIDEO_WIDTH <<<"$MPLAYER_CACHE" | cut -d'=' -f2) |
VID[$H]=$(grep ID_VIDEO_HEIGHT <<<"$MPLAYER_CACHE" | cut -d'=' -f2) |
VID[$FPS]=$(grep ID_VIDEO_FPS <<<"$MPLAYER_CACHE" | cut -d'=' -f2) |
VID[$LEN]=$(grep ID_LENGTH <<<"$MPLAYER_CACHE"| cut -d'=' -f2) |
# For some reason my (one track) samples have two ..._NCH, first one 0 |
VID[$CHANS]=$(grep ID_AUDIO_NCH <<<"$MPLAYER_CACHE"|cut -d'=' -f2|head -2|tail -1) |
|
# Upon consideration: |
#if grep -q '\.[0-9]*0$' <<<${VID[$FPS]} ; then |
# # Remove trailing zeroes... |
# VID[$FPS]=$(sed -r 's/(\.[1-9]*)0*$/\1/' <<<${VID[$FPS]}) |
# # ...And trailing decimal point |
# VID[$FPS]=$(sed 's/\.$//'<<<${VID[$FPS]}) |
#fi |
|
# Voodoo :P Remove (one) trailing zero |
if [ "${VID[$FPS]:$(( ${#VID[$FPS]} - 1 ))}" == "0" ]; then |
VID[$FPS]="${VID[$FPS]:0:$(( ${#VID[$FPS]} - 1 ))}" |
fi |
|
# Check sanity of the most important values |
is_number "${VID[$W]}" && is_number "${VID[$H]}" && is_float "${VID[$LEN]}" |
} |
|
# Main function. |
# Creates the contact sheet. |
# process($1 = file) |
process() { |
local f=$1 |
|
local numcols=$cols |
|
if [ ! -f "$f" ]; then |
error "File \"$f\" doesn't exist" |
return $EX_NOINPUT |
fi |
inf "Processing $f..." |
|
identify_video "$f" || { |
error "Found unsupported value while identifying video. Can't continue." |
return $EX_SOFTWARE |
} |
|
# Vidcap/Thumbnail height |
local vidcap_height=$th_height |
if ! is_number "$vidcap_height" || [ "$vidcap_height" -eq 0 ]; then |
vidcap_height=${VID[$H]} |
fi |
if [ "0" == "$aspect_ratio" ]; then |
aspect_ratio=$(bc -lq <<< "${VID[$W]} / ${VID[$H]}") |
elif [ "-1" == "$aspect_ratio" ]; then |
aspect_ratio=$(guess_aspect ${VID[$W]} ${VID[$H]}) |
inf "Aspect ratio set to $(sed -r 's/(\.[0-9]{2}).*/\1/g'<<<$aspect_ratio)" |
fi |
local vidcap_width=$(compute_width $vidcap_height) |
|
local numsecs=$(grep ID_LENGTH <<<"$MPLAYER_CACHE"| cut -d'=' -f2 | cut -d. -f1) |
|
local nc=$numcaps |
|
# Contact sheet minimum cols: |
if [ $nc -lt $numcols ]; then |
numcols=$nc |
fi |
|
create_temp_dir |
|
# Compute the stamps (if in auto mode)... |
TIMECODES=${initial_stamps[*]} |
if [ $manual_mode -ne 1 ]; then |
compute_timecodes $timecode_from $interval $numcaps || { |
return $? |
} |
fi |
|
local base_montage_command="montage -font $font_tstamps -pointsize $pts_tstamps \ |
-gravity SouthEast -fill white " |
local output=$(new_temp_file '-preview.png') |
local VIDCAPFILE=00000001.png |
|
# If the temporal vidcap already exists, abort |
if [ -f $VIDCAPFILE ]; then |
error "Temporal vidcap file ($VIDCAPFILE) exists, remove it before running!." |
return $EX_CANTCREAT |
fi |
|
TEMPSTUFF+=( $VIDCAPFILE ) |
|
# Highlighs |
local hlfile n=1 # hlfile Must be outside the if! |
if [ "$HLTIMECODES" ]; then |
local hlcapfile= pretty= capfiles=( ) |
for stamp in $(clean_timestamps "${HLTIMECODES[*]}"); do |
if fptest $stamp -gt $numsecs ; then let 'n++' && continue ; fi |
pretty=$(pretty_stamp $stamp) |
inf "Generating highlight #${n}/${#HLTIMECODES[*]} ($pretty)..." |
|
capture "$f" $stamp || return $? |
filter_vidcap "$VIDCAPFILE" $pretty $vidcap_width $vidcap_height || { |
local r=$? |
error "Failed to apply transformations to the capture." |
return $r |
} |
|
hlcapfile=$(new_temp_file "-hl-$(pad 6 $n).png") |
mv "$VIDCAPFILE" "$hlcapfile" |
capfiles+=( "$hlcapfile" ) |
let 'n++' |
done |
|
inf "Composing highlights contact sheet..." |
hlfile=$( create_contact_sheet $numcols $CTX_HL $vidcap_width $vidcap_height "${capfiles[@]}" ) |
unset hlcapfile pretty n capfiles |
fi |
unset n |
|
# Normal captures |
# TODO: Don't reference $VIDCAPFILE |
local capfile pretty n=1 capfiles=( ) |
for stamp in $(clean_timestamps "${TIMECODES[*]}"); do |
pretty=$(pretty_stamp $stamp) |
inf "Generating capture #${n}/${#TIMECODES[*]} ($pretty)..." |
|
capture "$f" $stamp || return $? |
filter_vidcap "$VIDCAPFILE" $pretty $vidcap_width $vidcap_height || return $? |
|
# identified by capture number, padded to 6 characters |
capfile=$(new_temp_file "-cap-$(pad 6 $n).png") |
mv "$VIDCAPFILE" "$capfile" |
capfiles+=( "$capfile" ) |
let 'n++' # $n++ |
done |
#filter_all_vidcaps "${capfiles[@]}" |
|
inf "Composing standard contact sheet..." |
output=$(create_contact_sheet $numcols $CTX_STD $vidcap_width $vidcap_height "${capfiles[@]}") |
unset capfile capfiles pretty n |
|
# Extended mode |
local extoutput= |
if [ "$extended_factor" != 0 ]; then |
# Number of captures. Always rounded to a multiplier of *double* the |
# number of columns (the extended caps are half width, this way they |
# match approx with the standard caps width) |
local hlnc=$(rtomult "$(( ${#TIMECODES[@]} * $extended_factor ))" $((2*$numcols))) |
|
unset TIMECODES # required step to get the right count |
declare -a TIMECODES # Note the manual stamps aren't included anymore |
compute_timecodes $TC_NUMCAPS "" $hlnc |
unset hlnc |
|
local n=1 w= h= capfile= pretty= capfiles=( ) |
# The image size of the extra captures is 1/4 |
let 'w=vidcap_width/2, h=vidcap_height/2' |
for stamp in $(clean_timestamps "${TIMECODES[*]}"); do |
pretty=$(pretty_stamp $stamp) |
inf "Generating capture from extended set: ${n}/${#TIMECODES[*]} ($pretty)..." |
capture "$f" $stamp || return $? |
filter_vidcap "$VIDCAPFILE" $pretty $w $h || return $? |
|
capfile=$(new_temp_file "-excap-$(pad 6 $n).png") |
mv "$VIDCAPFILE" "$capfile" |
capfiles+=( "$capfile" ) |
let 'n++' |
done |
inf "Composing extended contact sheet..." |
extoutput=$( create_contact_sheet $(($numcols * 2)) $CTX_EXT $w $h "${capfiles[@]}" ) |
|
unset w h capfile pretty n |
fi # Extended mode |
|
# Video codec "prettyfication", see [[R2]], [[R3]], [[R4]] |
local vcodec= acodec= |
case "${VID[$VCODEC]}" in |
0x10000001) vcodec="MPEG-1" ;; |
0x10000002) vcodec="MPEG-2" ;; |
0x00000000) vcodec="Raw RGB" ;; # How correct is this? |
avc1) vcodec="MPEG-4 AVC" ;; |
DIV3) vcodec="DivX ;-) Low-Motion" ;; # Technically same as mp43 |
DX50) vcodec="DivX 5" ;; |
FMP4) vcodec="FFmpeg" ;; # XXX: Would LAVC be a better name? |
I420) vcodec="Raw I420 Video" ;; # XXX: Officially I420 is Indeo 4 but it is mapped to raw ¿? |
MJPG) vcodec="M-JPEG" ;; # XXX: Actually mJPG != MJPG |
MPG4) vcodec="MS MPEG-4 V1" ;; |
MP42) vcodec="MS MPEG-4 V2" ;; |
MP43) vcodec="MS MPEG-4 V3" ;; |
RV10) vcodec="RealVideo 1.0/5.0" ;; |
RV20) vcodec="RealVideo G2" ;; |
RV30) vcodec="RealVideo 8" ;; |
RV40) vcodec="RealVideo 9/10" ;; |
SVQ1) vcodec="Sorenson Video 1" ;; |
SVQ3) vcodec="Sorenson Video 3" ;; |
theo) vcodec="Ogg Theora" ;; |
tscc) vcodec="TechSmith Screen Capture Codec" ;; |
VP6[012]) vcodec="On2 Truemotion VP6" ;; |
WMV1) vcodec="WMV7" ;; |
WMV2) vcodec="WMV8" ;; |
WMV3) vcodec="WMV9" ;; |
WMVA) vcodec="WMV9 Advanced Profile" ;; # Not VC1 compliant. Unsupported. |
XVID) vcodec="Xvid" ;; |
|
# These are known FourCCs that I haven't tested against so far |
DIV4) vcodec="DivX ;-) Fast-Motion" ;; |
DIVX|divx) vcodec="DivX" ;; # OpenDivX / DivX 5(?) / Project Mayo |
IV4[0-9]) vcodec="Indeo Video 4" ;; |
IV50) vcodec="Indeo 5.0" ;; |
VP3[01]) vcodec="On2 VP3" ;; |
VP40) vcodec="On2 VP4" ;; |
VP50) vcodec="On2 VP5" ;; |
# Legacy(-er) codecs (haven't seen files in these formats in awhile) |
IV3[0-9]) vcodec="Indeo Video 3" ;; |
MSVC) vcodec="Microsoft Video 1" ;; |
MRLE) vcodec="Microsoft RLE" ;; |
*) # If not recognized show FOURCC |
vcodec=${VID[$VCODEC]} |
;; |
esac |
if [ "${VID[$VDEC]}" == "ffodivx" ]; then |
vcodec+=" (MPEG-4)" |
elif [ "${VID[$VDEC]}" == "ffh264" ]; then |
vcodec+=" (h.264)" |
fi |
|
# Audio codec "prettyfication", see [[R4]] |
case $(tolower ${VID[$ACODEC]} ) in |
85) acodec='MPEG Layer III (MP3)' ;; |
80) acodec='MPEG Layer I/II (MP1/MP2)' ;; # Apparently they use the same tag |
mp4a) acodec='MPEG-4 AAC' ;; # LC and HE, apparently |
352) acodec='WMA7' ;; # =WMA1 |
353) acodec='WMA8' ;; # =WMA2 No idea if lossless can be detected |
354) acodec='WMA9' ;; # =WMA3 |
8192) acodec='AC3' ;; |
1|65534) |
# 1 is standard PCM (apparently all sample sizes) |
# 65534 seems to be multichannel PCM |
acodec='Linear PCM' ;; |
vrbs|22127) |
# 22127 = Vorbis in AVI (with ffmpeg) DON'T! |
# vrbs = Vorbis in Matroska, probably other sane containers |
acodec='Vorbis' |
;; |
qdm2) acodec="QDesign" ;; |
"") acodec="no audio" ;; |
# Following not seen by me so far, don't even know if mplayer would |
# identify them |
#<http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2005-November/005054.html> |
355) acodec="WMA9 Lossless" ;; |
10) acodec="WMA9 Voice" ;; |
*) # If not recognized show audio id tag |
acodec=${VID[$ACODEC]} |
;; |
esac |
|
if [ "${VID[$CHANS]}" ] && is_number "${VID[$CHANS]}" &&[ ${VID[$CHANS]} -ne 2 ]; then |
if [ ${VID[$CHANS]} -eq 0 ]; then |
# This happens e.g. in non-i386 when playing WMA9 at the time of |
# this writing |
warn "Detected 0 audio channels." |
warn " Does this version of mplayer support the audio codec ($acodec)?" |
elif [ ${VID[$CHANS]} -eq 1 ]; then |
acodec+=" (mono)" |
else |
acodec+=" (${VID[$CHANS]}ch)" |
fi |
fi |
|
|
if [ "$HLTIMECODES" ] || [ "$extended_factor" != "0" ]; then |
inf "Merging contact sheets..." |
fi |
# If there were highlights then mix them in |
if [ "$HLTIMECODES" ]; then |
#\( -geometry x2 xc:black -background black \) # This breaks it! |
convert \( -background LightGoldenRod "$hlfile" -flatten \) \ |
\( "$output" \) -append "$output" |
fi |
# Extended captures |
if [ "$extended_factor" != 0 ]; then |
convert "$output" "$extoutput" -append "$output" |
fi |
# Add the background |
convert -background "$bg_contact" "$output" -flatten "$output" |
|
# Let's add meta inf and signature |
inf "Adding header and footer..." |
local meta2="Dimensions: ${VID[$W]}x${VID[$H]} |
Format: $vcodec / $acodec |
FPS: ${VID[$FPS]}" |
local signature |
if [ $anonymous_mode -eq 0 ]; then |
signature="$user_signature $user |
with $PROGRAM_SIGNATURE" |
else |
signature="Created with $PROGRAM_SIGNATURE" |
fi |
local headwidth=$(identify "$output" | cut -d' ' -f3 | cut -d'x' -f1) |
# TODO: Use a better height calculation |
local headheight=$(($pts_meta * 4 )) |
local heading=$(new_temp_file .png) |
# Add the title if any |
if [ "$title" ]; then |
# TODO: Use a better height calculation |
convert \ |
\( \ |
-size ${headwidth}x$(( $pts_title + ($pts_title/2) )) "xc:$bg_title" \ |
-font "$font_title" -pointsize "$pts_title" \ |
-background "$bg_title" -fill "$fg_title" \ |
-gravity Center -annotate 0 "$title" \ |
\) \ |
-flatten \ |
"$output" -append "$output" |
fi |
local fn_font= # see $font_filename |
case $font_filename in |
$FF_DEFAULT) fn_font="$font_heading" ;; |
$FF_MINCHO) fn_font="$FONT_MINCHO" ;; |
*) |
warn "\$font_filename was overridden with an incorrect value, using default." |
fn_font="$font_heading" |
;; |
esac |
# Talk about voodoo... feel the power of IM... let's try to explain what's this: |
# It might technically be wrong but it seems to work as I think it should |
# (hence the voodoo I was talking) |
# Parentheses restrict options inside them to only affect what's inside too |
# * Create a base canvas of the desired width and height 1. The width is tweaked |
# because using "label:" later makes the text too close to the border, that |
# will be compensated in the last step. |
# * Create independent intermediate images with each row of information, the |
# filename row is split in two images to allow changing the font, and then |
# they're horizontally appended (and the font reset) |
# * All rows are vertically appended and cropped to regain the width in case |
# the filename is too long |
# * The appended rows are appended to the original canvas, the resulting image |
# contains the left row of information with the full heading width and |
# height, and this is the *new base canvas* |
# * Draw over the new canvas the right row with annotate in one |
# operation, the offset compensates for the extra pixel from the original |
# base canvas. XXX: Using -annotate allows setting alignment but it breaks |
# vertical alignment with the other rows' labels. |
# * Finally add the border that was missing from the initial width, we have |
# now the *complete header* |
# * Add the contact sheet and append it to what we had. |
# * Start a new image and annotate it with the signature, then append it too. |
convert \ |
\( \ |
-size $(( ${headwidth} -18 ))x1 "xc:$bg_heading" +size \ |
-font "$font_heading" -pointsize "$pts_meta" \ |
-background "$bg_heading" -fill "$fg_heading" \ |
\( \ |
-gravity West \ |
\( label:"Filename:" \ |
-font "$fn_font" label:"$(basename "$f")" +append \ |
\) \ |
-font "$font_heading" \ |
label:"File size: $(get_pretty_size "$f")" \ |
label:"Length: $(cut -d'.' -f1 <<<$(pretty_stamp ${VID[$LEN]}))" \ |
-append -crop ${headwidth}x${headheight}+0+0 \ |
\) \ |
-append \ |
\( \ |
-size ${headwidth}x${headheight} \ |
-gravity East -annotate +0-1 "$meta2" \ |
\) \ |
-bordercolor "$bg_heading" -border 9 \ |
\) \ |
"$output" -append \ |
\( \ |
-size ${headwidth}x34 -gravity Center "xc:$bg_sign" \ |
-font "$font_sign" -pointsize "$pts_sign" \ |
-fill "$fg_sign" -annotate 0 "$signature" \ |
\) \ |
-append \ |
"$output" |
unset signature meta2 headwidth headheight heading fn_font |
|
if [ $output_format != "png" ]; then |
local newout="$(dirname "$output")/$(basename "$output" .png).$output_format" |
convert -quality $output_quality "$output" "$newout" |
output="$newout" |
fi |
|
output_name=$( safe_rename "$output" "$(basename "$f").$output_format" ) || { |
error "Failed to write the output file!" |
return $EX_CANTCREAT |
} |
inf "Done. Output wrote to $output_name" |
|
cleanup |
} |
|
# }}} # Core functionality |
|
# {{{ # Debugging helpers |
|
# Tests integrity of some operations. |
# Used to test internal changes for consistency. |
# It helps me to identify incorrect optimizations. |
# unit_test() |
unit_test() { |
local t op val ret comm retval=0 |
|
# Textual tests, compare output to expected output |
# Tests are in the form "operation arguments correct_result #Description" |
local TESTS=( |
"rmultiply 1,1 1 #Identity" |
"rmultiply 16/9,1 2 #Rounding" # 1.77 rounded 2 |
"rmultiply 4/3 1 #Rounding" # 1.33 rounded 1 |
"rmultiply 1,16/9 2 #Commutative property" |
"rmultiply 1.7 2 #Alternate syntax" |
|
"ceilmultiply 1,1 1 #" |
"ceilmultiply 4/3 2 #" # 1.33 rounded 2 |
"ceilmultiply 7,1/2 4 #" # 3.5 rounded 4 |
"ceilmultiply 7/2 4 #Alternative syntax" |
"ceilmultiply 1/2,7 4 #Commutative property" |
|
"pad 10 0 0000000000 #Padding" |
"pad 1 20 20 #Unneeded padding" |
"pad 5 23.3 023.3 #Floating point padding" |
|
"guess_aspect 720 576 4/3 #DVD AR Guess" |
"guess_aspect 1024 576 1024/576 #Unsupported Wide AR Guess" |
|
"tolower ABC abc #lowercase conversion" |
|
"pyth_th 4 3 5 #Integer pythagorean theorem" |
"pyth_th 16 9 18.35755975068581929849 #FP pythagorean theorem" |
) |
|
for t in "${TESTS[@]}" ; do |
# Note the use of ! as separator, this is because # and / are used in |
# many of the inputs |
comm=$(sed 's!.* #!!g' <<<$t) |
# Expected value |
val=$(sed -r "s!.* (.*) #$comm\$!\1!g"<<<$t) |
op=$(sed "s! $val #$comm\$!!g" <<<$t) |
if [ -z "$comm" ]; then |
comm=unnamed |
fi |
ret=$($op) || true |
|
if [ "$ret" != "$val" ] && fptest "$ret" -ne "$val" ; then |
error "Failed test ($comm): '$op $val'. Got result '$ret'." |
let 'retval++,1' # The ,1 ensures let doesn't fail |
else |
inf "Passed test ($comm): '$op $val'." |
fi |
done |
|
# Returned value tests, compare return to expected return |
local TESTS=( |
# Don't use anything with a RE meaning |
|
# Floating point numeric "test" |
"fptest 3 -eq 3 0 #FP test" |
"fptest 3.2 -gt 1 0 #FP test" |
"fptest 1/2 -le 2/3 0 #FP test" |
"fptest 6.34 -gt 6.34 1 #FP test" |
"fptest 1>0 -eq 1 0 #FP -logical- test" |
|
"is_number 3 0 #Numeric recognition" |
"is_number '3' 1 #Quoted numeric recognition" |
"is_number 3.3 1 #Non-numeric recognition" |
|
"is_float 3.33 0 #Float recognition" |
"is_float 3 0 #Float recognition" |
"is_float 1/3 1 #Non-float recognition" |
|
"is_fraction 1/1 0 #Fraction recognition" |
"is_fraction 1 1 #non-fraction recognition" |
"is_fraction 1.1 1 #Non-fraction recognition" |
) |
for t in "${TESTS[@]}"; do |
comm=$(sed 's!.* #!!g' <<<$t) |
# Expected value |
val=$(sed -r "s!.* (.*) #$comm\$!\1!g"<<<$t) |
op=$(sed "s! $val #$comm\$!!g" <<<$t) |
if [ -z "$comm" ]; then |
comm=unnamed |
fi |
ret=0 |
$op || { |
ret=$? |
} |
|
if [ $val -eq $ret ]; then |
inf "Passed test ($comm): '$op; returns $val'." |
else |
error "Failed test ($comm): '$op; returns $val'. Returned '$ret'" |
let 'retval++,1' |
fi |
done |
|
return $retval |
} |
|
|
# }}} # Debugging helpers |
|
# {{{ # Help / Info |
|
# Prints the program identification to stderr |
show_vcs_info() { # Won't be printed in quiet modes |
inf "Video Contact Sheet *NIX v${VERSION}, (c) 2007 Toni Corvera" "sgr0" |
} |
|
# Prints the list of options to stdout |
show_help() { |
local P=$(basename $0) |
cat <<EOF |
Usage: $P [options] <file> |
|
Options: |
-i|--interval <arg> Set the interval to arg. Units can be used |
(case-insensitive), i.e.: |
Seconds: 90 or 90s |
Minutes: 3m |
Hours: 1h |
Combined: 1h3m90 |
Use either -i or -n. |
-n|--numcaps <arg> Set the number of captured images to arg. Use either |
-i or -n. |
-c|--columns <arg> Arrange the output in 'arg' columns. |
-H|--height <arg> Set the output (individual thumbnail) height. Width is |
derived accordingly. Note width cannot be manually set. |
-a|--aspect <aspect> Aspect ration. Accepts floating point number or |
fractions. |
-f|--from <arg> Set starting time. No caps before this. Same format |
as -i. |
-t|--to <arg> Set ending time. No caps beyond this. Same format |
as -i. |
-E|--end_offset <arg> This time is ignored, from the end of the video. Same |
format as -i. This value is not used when a explicit |
ending time is set. By default it is $DEFAULT_END_OFFSET. |
-T|--title <arg> Add a title above the vidcaps. |
-j|--jpeg Output in jpeg (by default output is in png). |
-q|--quiet Don't print progess messages just errors. Repeat to |
mute completely even on error. |
-h|--help Show this text. |
-Wo Workaround: Change ffmpeg's arguments order, might |
work with some files that fail otherwise. |
-A|--autoaspect Try to guess aspect ratio from resolution. |
-e[num] | --extended=[num] |
Enables extended mode and optionally sets the extended |
factor. -e is the same as -e$DEFAULT_EXT_FACTOR. |
-l|--highlight <arg> Add the image found at the timestamp "arg" as a |
highlight. Same format as -i. |
-m|--manual Manual mode: Only timestamps indicated by the user are |
used (use in conjunction with -S), when using this |
-i and -n are ignored. |
-O|--override <arg> Use it to override a variable (see the homepage for |
more details). Format accepted is 'variable=value' (can |
also be quoted -variable="some value"- and can take an |
internal variable too -variable="\$SOME_VAR"-). |
-S|--stamp <arg> Add the image found at the timestamp "arg". Same format |
as -i. |
|
-u|--user <arg> Set the username found in the signature to this. |
-U|--fullname Use user's full/real name (e.g. John Smith) as found in |
/etc/passwd. |
-Ij|-Ik |
--mincho Use the kana/kanji/hiragana font (EXPERIMENTAL) might |
also work partially with Hangul and Cyrillic. |
-k <arg> |
--funky <arg> Funky modes: |
These are toy output modes in which the contact sheet |
gets a more informal look. |
Order *IS IMPORTANT*. A bad order gets a bad result :P |
They're random in nature so using the same funky mode |
twice will usually lead to quite different results. |
Currently available "funky modes": |
"overlap": Use '-ko' or '--funky overlap' |
Randomly overlap captures. |
"rotate": Use '-kr' or '--funky rotate' |
Randomly rotate each image. |
"photoframe": Use '-kf' or '--funky photoframe' |
Adds a photo-like white frame to each image. |
"polaroid": Use '-kp' or '--funky polaroid' |
Combination of rotate, photoframe and overlap. |
Same as -kr -ko -kf. |
"film": Use '-ki' or '--funky film' |
Imitates filmstrip look. |
"random": Use '-kx' or '--funky random' |
Randomizes colours and fonts. |
|
Options used for debugging purposes or to tweak the internal workings: |
-M|--mplayer Force the usage of mplayer. |
-F|--ffmpeg Force the usage of ffmpeg. |
--shoehorn <arg> Pass "arg" to mplayer/ffmpeg. You shouldn't need it. |
-D Debug mode. Used to test features/integrity. It: |
* Prints the input command line |
* Sets the title to reflect the command line |
* Does a basic test of consistency. |
|
Examples: |
Create a contact sheet with default values (vidcaps at intervals of |
$DEFAULT_INTERVAL seconds), the resulting file will be called |
input.avi.png: |
\$ $P input.avi |
|
Create a sheet with vidcaps at intervals of 3 and a half minutes: |
\$ $P -i 3m30 input.avi |
|
Create a sheet with vidcaps starting at 3 mins and ending at 18 mins, |
add an extra vidcap at 2m and another one at 19m: |
\$ $P -f 3m -t 18m -S2m -S 19m input.avi |
|
See more examples at vcs' homepage <http://p.outlyer.net/vcs/>. |
|
EOF |
} |
|
# }}} # Help / Info |
|
#### Execution starts here #### |
|
# If tput isn't found simply ignore tput commands |
# (no colour support) |
# Important to do it before any message can be thrown |
if ! type -pf tput >/dev/null ; then |
tput() { cat >/dev/null <<<"$1"; } |
warn "tput wasn't found. Coloured feedback disabled." |
fi |
|
# Execute exithdlr on exit |
trap exithdlr EXIT |
|
show_vcs_info |
|
load_config |
|
# {{{ # Command line parsing |
|
# TODO: Find how to do this correctly (this way the quoting of $@ gets messed): |
#eval set -- "${default_options} ${@}" |
ARGS="$@" |
|
# [[R0]] |
TEMP=$(getopt -s bash -o i:n:u:T:f:t:S:jhFMH:c:ma:l:De::U::qAO:I::k:W:E: \ |
--long "interval:,numcaps:,username:,title:,from:,to:,stamp:,jpeg,help,"\ |
"shoehorn:,mplayer,ffmpeg,height:,columns:,manual,aspect:,highlight:,"\ |
"extended::,fullname,anonymous,quiet,autoaspect,override:,mincho,funky:,end_offset:" \ |
-n $0 -- "$@") |
|
eval set -- "$TEMP" |
|
while true ; do |
case "$1" in |
-i|--interval) |
if ! interval=$(get_interval "$2") ; then |
error "Incorrect interval format. Got '$2'." |
exit $EX_USAGE |
fi |
if [ "$interval" == "0" ]; then |
error "Interval must be higher than 0, set to the default $DEFAULT_INTERVAL" |
interval=$DEFAULT_INTERVAL |
fi |
timecode_from=$TC_INTERVAL |
shift # Option arg |
;; |
-n|--numcaps) |
if ! is_number "$2" ; then |
error "Number of captures must be (positive) a number! Got '$2'." |
exit $EX_USAGE |
fi |
if [ $2 -eq 0 ]; then |
error "Number of captures must be greater than 0! Got '$2'." |
exit $EX_USAGE |
fi |
numcaps="$2" |
timecode_from=$TC_NUMCAPS |
shift # Option arg |
;; |
-u|--username) user="$2" ; shift ;; |
-U|--fullname) |
# -U accepts an optiona argument, 0, to make an anonymous signature |
# --fullname accepts no argument |
if [ "$2" ]; then # With argument, special handling |
if [ "$2" != "0" ]; then |
error "Use '-U0' to make an anonymous contact sheet or '-u \"My Name\"'" |
error " to sign as My Name. Got -U$2" |
exit $EX_USAGE |
fi |
anonymous_mode=1 |
shift |
else # No argument, default handling (try to guess real name) |
user=$(grep ^$(id -un): /etc/passwd | cut -d':' -f5 |sed 's/,.*//g') |
if [ -z "$user" ]; then |
user=$(id -un) |
error "No fullname found, falling back to default ($user)" |
fi |
fi |
;; |
--anonymous) anonymous_mode=1 ;; # Same as -U0 |
-T|--title) title="$2" ; shift ;; |
-f|--from) |
if ! fromtime=$(get_interval "$2") ; then |
error "Starting timestamp must be a valid timecode. Got '$2'." |
exit $EX_USAGE |
fi |
shift |
;; |
-E|--end_offset) |
if ! end_offset=$(get_interval "$2") ; then |
error "End offset must be a valid timecode. Got '$2'." |
exit $EX_USAGE |
fi |
shift |
;; |
-t|--to) |
if ! totime=$(get_interval "$2") ; then |
error "Ending timestamp must be a valid timecode. Got '$2'." |
exit $EX_USAGE |
fi |
if [ "$totime" -eq 0 ]; then |
error "Ending timestamp was set to 0, set to movie length." |
totime=-1 |
fi |
shift |
;; |
-S|--stamp) |
if ! temp=$(get_interval "$2") ; then |
error "Timestamps must be a valid timecode. Got '$2'." |
exit $EX_USAGE |
fi |
initial_stamps=( ${initial_stamps[*]} $temp ) |
shift |
;; |
-l|--highlight) |
if ! temp=$(get_interval "$2"); then |
error "Timestamps must be a valid timecode. Got '$2'." |
exit $EX_USAGE |
fi |
HLTIMECODES+=( $temp ) |
shift |
;; |
-j|--jpeg) output_format=jpg ;; |
-h|--help) show_help ; exit $EX_OK ;; |
--shoehorn) |
shoehorned="$2" |
shift |
;; |
-F) decoder=$DEC_FFMPEG ;; |
-M) decoder=$DEC_MPLAYER ;; |
-H|--height) |
if ! is_number "$2" ; then |
error "Height must be a (positive) number. Got '$2'." |
exit $EX_USAGE |
fi |
th_height="$2" |
shift |
;; |
-a|--aspect) |
if ! is_float "$2" && ! is_fraction "$2" ; then |
error "Aspect ratio must be expressed as a (positive) floating " |
error " point number or a fraction (ie: 1, 1.33, 4/3, 2.5). Got '$2'." |
exit $EX_USAGE |
fi |
aspect_ratio="$2" |
shift |
;; |
-A|--autoaspect) aspect_ratio=-1 ;; |
-c|--columns) |
if ! is_number "$2" ; then |
error "Columns must be a (positive) number. Got '$2'." |
exit $EX_USAGE |
fi |
cols="$2" |
shift |
;; |
-m|--manual) manual_mode=1 ;; |
-e|--extended) |
# Optional argument quirks: $2 is always present, set to '' if unused |
# from the commandline it MUST be directly after the -e (-e2 not -e 2) |
# the long format is --extended=VAL |
# XXX: For some reason parsing of floats gives an error, so for now |
# ints and only fractions are allowed |
if [ "$2" ] && ! is_float "$2" && ! is_fraction "$2" ; then |
error "Extended multiplier must be a (positive) number (integer, float "\ |
"or fraction)." |
error " Got '$2'." |
exit $EX_USAGE |
fi |
if [ "$2" ]; then |
extended_factor="$2" |
else |
extended_factor=$DEFAULT_EXT_FACTOR |
fi |
shift |
;; |
--mincho) font_filename=$FF_MINCHO ;; |
-I) # -I technically takes an optional argument (for future alternative |
# fonts) although it is documented as a two-letter option |
# Don't relay on using -I though, if I ever add a new alternative font |
# I might not allow it anymore |
if [ "$2" ] ; then |
# If an argument is passed, test it is one of the known ones |
case "$2" in |
k|j) ;; |
*) error "-I must be followed by j or k!" && exit $EX_USAGE ;; |
esac |
fi |
# It isn't tested for existence because it could also be a font |
# which convert would understand without giving the full path |
font_filename=$FF_MINCHO; |
shift |
;; |
-O|--override) |
# Rough test |
if ! egrep -q '[a-zA-Z_]+=[^;]*' <<<"$2"; then |
error "Wrong override format, it should be variable=value. Got '$2'." |
exit $EX_USAGE |
fi |
override "$2" "command line" |
shift |
;; |
-W) # Workaround mode, see wa_ss_* declarations at the start for details |
if [ "$2" != "o" ]; then |
error "Wrong argument. Use -Wo instead of -W$2." |
exit $EX_USAGE |
fi |
wa_ss_af='-ss ' wa_ss_be='' |
shift |
;; |
-k|--funky) # Funky modes |
case $(tolower "$2") in |
p|polaroid) # Same as overlap + rotate + photoframe |
inf "Changed to polaroid funky mode." |
FILTERS_IND+=( 'filt_photoframe' 'filt_randrot' ) |
CSHEET_DELEGATE='csheet_overlap' |
# The timestamp must change location to be visible |
grav_timestamp=NorthWest |
;; |
o|overlap) # Random overlap mode |
CSHEET_DELEGATE='csheet_overlap' |
grav_timestamp=NorthWest |
;; |
r|rotate) # Random rotation |
FILTERS_IND+=( 'filt_randrot' ) |
;; |
f|photoframe) # White photo frame |
FILTERS_IND+=( 'filt_photoframe' ) |
;; |
i|film) |
inf "Enabled film mode." |
FILTERS_IND+=( 'filt_film' ) |
;; |
x|random) # Random colours/fonts |
inf "Enabled random colours and fonts." |
randomize_look |
;; |
*) |
error "Unknown funky mode. Got '$2'." |
exit $EX_USAGE |
;; |
esac |
shift |
;; |
-q|--quiet) |
# -q to only show errors |
# -qq to be completely quiet |
if [ $verbosity -gt $V_ERROR ]; then |
verbosity=$V_ERROR |
else |
verbosity=$V_NONE |
fi |
;; |
-D) # Repeat to just test consistency |
if [ $DEBUGGED -gt 0 ]; then exit ; fi |
inf "Testing internal consistency..." |
unit_test |
if [ $? -eq 0 ]; then |
warn "All tests passed" |
else |
error "Some tests failed!" |
fi |
DEBUGGED=1 |
warn "Command line: $0 $ARGS" |
title="$(basename "$0") $ARGS" |
;; |
--) shift ; break ;; |
*) error "Internal error! (remaining opts: $@)" ; exit $EX_SOFTWARE ; |
esac |
shift |
done |
|
# Remaining arguments |
if [ ! "$1" ]; then |
show_help |
exit $EX_USAGE |
fi |
|
# }}} # Command line parsing |
|
# Test requirements |
test_programs || exit $EX_UNAVAILABLE |
|
# If -m is used then -S must be used |
if [ $manual_mode -eq 1 ] && [ -z $initial_stamps ]; then |
error "You must provide timestamps (-S) when using manual mode (-m)" |
exit $EX_USAGE |
fi |
|
set +e # Don't fail automatically |
for arg do process "$arg" ; done |
|
|
# vim:set ts=4 ai foldmethod=marker: # |
Property changes: |
Added: svn:executable |
Added: svn:keywords |
+Rev Id Date |
\ No newline at end of property |