[tovid] r3514 committed - ...

[to...@googlecode.com]

Revision: 3514
Author: grepper
Date: Wed Jan 28 06:45:29 2015 UTC
Log:
At some point this script may be needed to support
use of mpv instead of mplayer. It is modified from
the GPL script midentify from mplayer afaik. Will
double check before including it in a release.

https://code.google.com/p/tovid/source/detail?r=3514

Added:
/trunk/tovid/src/mpv_identify.sh

=======================================
--- /dev/null
+++ /trunk/tovid/src/mpv_identify.sh Wed Jan 28 06:45:29 2015 UTC
@@ -0,0 +1,154 @@
+#!/bin/sh
+
+# file identification script
+#
+# manual usage:
+# mpv_identify.sh foo.mkv
+#
+# sh/dash/ksh/bash usage:
+# . mpv_identify.sh FOO_ foo.mkv
+# will fill properties into variables like FOO_length
+#
+# zsh usage:
+# mpv_identify() { emulate -L sh; . mpv_identify.sh "$@"; }
+# mpv_identify FOO_ foo.mkv
+# will fill properties into variables like FOO_length
+#
+# When multiple files were specified, their info will be put into FOO_*
for the
+# first file, FOO_1_* for the second file, FOO_2_* for the third file, etc.
+
+__midentify__main() {
+
+ case "$0" in
+ mpv_identify.sh|*/mpv_identify.sh)
+ # we are NOT being sourced
+ [ -n "$1" ] && set -- '' "$@"
+ ;;
+ esac
+
+ if [ "$#" -lt 2 ]; then
+ cat >&2 <<EOF
+Usage 1 (for humans only): $0 filename.mkv
+will print all property values.
+Note that this output really shouldn't be parsed, as the
+format is subject to change.
+
+Usage 2 (for use by scripts): see top of this file
+
+NOTE: for mkv with ordered chapters, this may
+not always identify the specified file, but the
+file providing the first chapter. Specify
+--no-ordered-chapters to prevent this.
+EOF
+ return 2
+ fi
+
+ local LF="
+"
+
+ local nextprefix="$1"
+ shift
+
+ if [ -n "$nextprefix" ]; then
+ # in case of error, we always want this unset
+ unset "${nextprefix}path"
+ fi
+
+ local allprops="
+ filename
+ path
+ stream-start
+ stream-end
+ stream-length
+
+ demuxer
+
+ length
+ chapters
+ editions
+ titles
+
+ audio
+ audio-bitrate
+ audio-codec
+ audio-format
+ channels
+ samplerate
+
+ video
+ angle
+ video-bitrate
+ video-codec
+ video-format
+ video-aspect
+ fps
+ width
+ height
+ dwidth
+ dheight
+
+ sub
+ "
+ # TODO add metadata support once mpv can do it
+
+ local propstr="X-MIDENTIFY-START:$LF"
+ local key
+ for key in $allprops; do
+ propstr="${propstr}X-MIDENTIFY: $key \${=$key}$LF"
+ key="$(printf '%s\n' "$key" | tr - _)"
+ unset "$nextprefix$key"
+ done
+
+ local fileindex=0
+ local prefix=
+ local line
+ while IFS= read -r line; do
+ case "$line" in
+ X-MIDENTIFY-START:)
+ if [ -n "$nextprefix" ]; then
+ prefix="$nextprefix"
+ if [ "$fileindex" -gt 0 ]; then
+ nextprefix="${prefix%${fileindex}_}"
+ fi
+ fileindex="$((fileindex+1))"
+ nextprefix="${nextprefix}${fileindex}_"
+ for key in $allprops; do
+ key="$(printf '%s\n' "$key" | tr - _)"
+ unset "$nextprefix$key"
+ done
+ else
+ if [ "$fileindex" -gt 0 ]; then
+ printf '\n'
+ fi
+ fileindex="$((fileindex+1))"
+ fi
+ ;;
+ X-MIDENTIFY:\ *)
+ local key="${line#X-MIDENTIFY: }"
+ local value="${key#* }"
+ key="${key%% *}"
+ key="$(printf '%s\n' "$key" | tr - _)"
+ if [ -n "$nextprefix" ]; then
+ if [ -z "$prefix" ]; then
+ echo >&2 "Got X-MIDENTIFY: without
X-MIDENTIFY-START:"
+ elif [ -n "$value" ]; then
+ eval "$prefix$key"='"$value"'
+ fi
+ else
+ if [ -n "$value" ]; then
+ printf '%s=%s\n' "$key" "$value"
+ fi
+ fi
+ ;;
+ esac
+ done <<EOF
+echo $propstr
+
+$(${MPV:-mpv} --term-playing-msg="$propstr" --vo=null --ao=null \
+ --frames=1 --quiet --no-cache --no-config -- "$@")
+EOF
+}
+
+__midentify__main "$@"
+
+echo Running mpv --term-playing-msg="$propstr" --vo=null --ao=null
--frames=1 --quiet --no-cache --no-config -- "$@" >&2