From 0821b527c4e6695c81fe16e6fb42a4c34c15aeae Mon Sep 17 00:00:00 2001
From: "Alex A. Naanou" <alex.nanou@gmail.com>
Date: Wed, 26 Jun 2013 18:07:07 +0400
Subject: [PATCH] working on workflow support scripts...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
---
 buildcache.py               | 20 +++++++++---------
 scripts/extract-metadata.sh |  9 ++++++++
 scripts/vips-tn.sh          | 41 +++++++++++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+), 10 deletions(-)
 create mode 100755 scripts/extract-metadata.sh
 create mode 100755 scripts/vips-tn.sh

diff --git a/buildcache.py b/buildcache.py
index be0ff3ae..ea684adc 100755
--- a/buildcache.py
+++ b/buildcache.py
@@ -1,7 +1,7 @@
 #=======================================================================
 
 __version__ = '''0.0.01'''
-__sub_version__ = '''20130622165505'''
+__sub_version__ = '''20130626175935'''
 __copyright__ = '''(c) Alex A. Naanou 2011'''
 
 
@@ -63,8 +63,8 @@ CONFIG = {
 		'150px': 150,
 		'350px': 350,
 		'900px': 900,
-		'1080px': 1080,
-		'1920px': 1920,
+##		'1080px': 1080,
+##		'1920px': 1920,
 	}
 }
 
@@ -316,7 +316,8 @@ def build_previews(image, path=None, config=CONFIG, dry_run=True, verbosity=0):
 	img_path = image['path']
 
 	if absolute_path == False:
-		source_path = os.path.join(path, img_path)
+##		source_path = os.path.join(path, img_path)
+		source_path = os.path.join(path, urllib2.url2pathname(img_path))
 	else:
 		# XXX is this the best way???
 		o = urllib2.urlopen(img_path)
@@ -348,16 +349,15 @@ def build_previews(image, path=None, config=CONFIG, dry_run=True, verbosity=0):
 
 		# add image to index...
 		if not os.path.exists(p):
-			# use the preview to speed things up...
-			# NOTE: this will degrade the quality of previews after
-			# 		several resizes...
-##			if preview != None:
-##				img = preview
 			scale = spec/float(max(*img.size))
 			preview = img.resize((int(img.size[0]*scale), int(img.size[1]*scale)), Image.ANTIALIAS)
 
 			if not dry_run:
-				preview.save(p)
+				preview.save(p, quality=80)
+				# use the preview to speed things up...
+				# NOTE: this will degrade the quality of previews after
+				# 		several resizes...
+				img = Image.open(p, 'r')
 			else:
 				preview.close()
 
diff --git a/scripts/extract-metadata.sh b/scripts/extract-metadata.sh
new file mode 100755
index 00000000..793aad7c
--- /dev/null
+++ b/scripts/extract-metadata.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+# extract hi-res previews...
+#exiftool -b -JpgFromRaw -w "%-:1d/hi-res (RAW)/%f.jpg" -ext NEF -r .
+
+
+# extract metadata in JSON format...
+exiftool -j -w "%-:1d/metadata/%f.json" -ext NEF -r . -progress 
+
diff --git a/scripts/vips-tn.sh b/scripts/vips-tn.sh
new file mode 100755
index 00000000..7a75af60
--- /dev/null
+++ b/scripts/vips-tn.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+
+SCALE=0.21
+FACTOR=4.76
+ALGORITHM=bicubic
+
+COMPRESSION=90
+
+PATH=$PATH:`pwd`/vips-dev-7.32.0/bin/
+
+for f in */DCIM/hi-res\ \(RAW\)/*jpg ; do
+	# this yields images with EXTREAM aliasing artifacts, with all supported algorithms
+	# NOTE: vips appears not to support lanczos scaling...
+	##vips im_affinei_all "$f" "${f/hi-res\ /preview }:${COMPRESSION}" $ALGORITHM $SCALE 0 0 $SCALE 0 0
+
+	# NOTE: -n (no sharpening) gives a bit too blurry results...
+	# NOTE: this also renames the files...
+	##vipsthumbnail -s 900 "$f"
+
+	# this gives lots of warnings but appears to be OK... but not too fast.
+	# so far, this is the best result...
+	# NOTE: this, being "not too fast" actually is the fastest when comparing to I_View or PIL...
+	#	- I_View ~2-3 minutes
+	#	- PIL ~6 minutes
+	#	- im_shrink <2 minutes
+	vips im_shrink "$f" "${f/hi-res\ /preview }:${COMPRESSION}" $FACTOR $FACTOR
+
+	# this is different in that it uses a shrink factor while opening the image, thus
+	# a different scale factor...
+	# - ALLOT faster
+	# - blurry in comparison
+	##vips im_shrink "$f:4" "${f/hi-res\ /preview }:${COMPRESSION}" 1.19 1.19
+
+	# apply different amounts of read scaling...
+	# still quite extreme aliasing...
+	# IDEA: it's so extream, might be a good idea to first blur the image some and then scale...
+	##vips im_affinei_all "$f:2" "${f/hi-res\ /preview }:${COMPRESSION}" $ALGORITHM 0.42 0 0 0.42 0 0
+	# artifacts, better than all previous attempts at im_affinei_all, but worse than plain im_shrink...
+	##vips im_affinei_all "$f:4" "${f/hi-res\ /preview }:${COMPRESSION}" $ALGORITHM 0.84 0 0 0.84 0 0
+done
+