From: yomguy <yomguy@parisson.com>
Date: Fri, 18 Jun 2010 18:14:25 +0000 (+0000)
Subject: add INSTALL and few infos
X-Git-Tag: 0.3.2~139
X-Git-Url: https://git.parisson.com/?a=commitdiff_plain;h=733a001a6d9cbb927e2dfb79c84e932db22becc8;p=timeside.git

add INSTALL and few infos
---

diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..22aa818
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,119 @@
+=======
+INSTALL
+=======
+
+This file describe how to install the TimeSide python package from source.
+
+
+Install dependencies
+====================
+
+TimeSide needs some other python modules to run.
+See README for the full dependency list.
+
+The following methods explain how to install all dependencies on a Debian based system
+and espacially on Debian Lenny 5.x Stable. Is it now considered you have install this system correctly.
+
+Become root. In a terminal or console, run::
+
+    $ su
+
+Write your root password.
+
+Add backports repository to the apt sources.list::
+
+    $ echo "deb http://www.backports.org/debian lenny-backports main contrib non-free" | tee -a /etc/apt/sources.list
+
+Note : you can paste the full command but without the shell character '$'.
+Then :
+
+    $ apt-get update
+    $ apt-get -t lenny-backports upgrade
+
+Say 'YES' to all questions. Then::
+
+    $ apt-get install -t lenny-backports vim subversion python python-setuptools python-xml python-mutagen \
+                            python-imaging python-numpy python-gst0.10, gstreamer0.10-plugins-base \
+                            gstreamer0.10-plugins-fluendo-mp3 gstreamer0.10-plugins-good
+
+
+Install TimeSide
+================
+
+Get the code and install::
+
+    $ svn export http://timeside.googlecode.com/svn/trunk/ timeside
+    $ cd timeside
+    $ python setup.py install
+
+This installs all timeside sub modules as decoders, encoders, analyzers, graphers and
+a few scripts.
+
+
+Use TimeSide
+============
+
+Waveform batching
+-----------------
+You can use waveform_batch to create some waveforms from a media (audio) directory, type::
+
+    $ waveform_batch /path/to/media_dir /path/to/img_dir
+
+Please use absolute paths. For example::
+
+    $ waveform_batch /home/$user/music/mp3/ /home/$USER/images/
+
+
+To change the color scheme or the size of the waveforms, edit the waveform_batch script::
+
+    $ vi timeside/tools/waveform_batch
+
+And change only the following variables of the GrapherScheme object::
+
+        self.color_scheme = {
+            'waveform': [ # Four (R,G,B) tuples for three main color channels for the spectral centroid method
+                        (50,0,200), (0,220,80), (255,224,0), (255,0,0)
+                        ],
+            'spectrogram': [
+                        (0, 0, 0), (58/4,68/4,65/4), (80/2,100/2,153/2), (90,180,100), (224,224,44), (255,60,30), (255,255,255)
+                        ]}
+
+        # Width of the image
+        self.width = 2048
+
+        # Height of the image
+        self.height = 128
+
+        # Background color
+        self.bg_color = (255,255,255)
+
+        # Force computation. By default, the class doesn't overwrite existing image files.
+        self.force = False
+
+Save the script and re-run setup::
+
+    $ python setup.py install
+
+
+Any other pipe processing !
+---------------------------
+
+For example, a normalization and a waveform, from a python shell::
+
+>>> import timeside
+
+>>> decoder  =  timeside.decoder.FileDecoder('source.wav')
+>>> grapher  =  timeside.grapher.Waveform('image.png')
+>>> max      =  timeside.analyzer.MaxLevel()
+>>> encoder  =  timeside.encoder.WavEncoder('normalized.wav')
+>>> (decoder | max).run()
+>>> gain = max.result() > 0 and (1 / max.result()) or 1
+>>> (decoder | Gain(gain) | grapher | encoder).run()
+
+
+See the website for more examples and information about the TimeSide API:
+
+http://code.google.com/p/timeside/
+http://code.google.com/p/timeside/wiki/PythonApi
+http://code.google.com/p/timeside/source/browse/trunk/timeside/api.py
+
diff --git a/timeside/tools/waveform_batch b/timeside/tools/waveform_batch
index b93d659..618aea7 100644
--- a/timeside/tools/waveform_batch
+++ b/timeside/tools/waveform_batch
@@ -31,17 +31,24 @@ class GrapherScheme:
     def __init__(self):
 
         self.color_scheme = {
-            'waveform': [
+            'waveform': [ # Four (R,G,B) tuples for three main color channels for the spectral centroid method
                         (50,0,200), (0,220,80), (255,224,0), (255,0,0)
                         ],
             'spectrogram': [
                         (0, 0, 0), (58/4,68/4,65/4), (80/2,100/2,153/2), (90,180,100), (224,224,44), (255,60,30), (255,255,255)
-                           ]}
+                        ]}
 
+        # Width of the image
         self.width = 2048
+
+        # Height of the image
         self.height = 128
+
+        # Background color
         self.bg_color = (255,255,255)
-        self.force = True
+
+        # Force computation. By default, the class doesn't overwrite existing image files.
+        self.force = False
 
 
 class Media2Waveform(object):