From dca4e3b844e759a029c52928c769c362ab5dce1d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20B=2E=20Brandenburg?= <bbb@cs.unc.edu>
Date: Wed, 24 Nov 2010 13:10:35 -0500
Subject: add tool for plotting raw frame decoding times

---
 vplot.py | 156 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 156 insertions(+)
 create mode 100755 vplot.py

(limited to 'vplot.py')

diff --git a/vplot.py b/vplot.py
new file mode 100755
index 0000000..71344c6
--- /dev/null
+++ b/vplot.py
@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+import defapp
+
+from plot import decode
+from util import load_csv_file, write_csv_file
+
+from math import ceil
+
+from numpy import amin, amax, mean, median, std, histogram
+
+from os.path  import splitext, basename
+from optparse import make_option as o
+
+from gnuplot  import gnuplot, FORMATS, Plot, label, curve
+
+options = [
+    # output options
+    o('-f', '--format', action='store', dest='format', type='choice',
+      choices=FORMATS, help='output format'),
+    o(None, '--save-script', action='store_true', dest='save_script'),
+    o('-p', '--prefix', action='store', dest='prefix'),
+
+    # formatting options
+    # These may or may not be supported by a particular experiment plotter.
+    o(None, '--smooth', action='store_true', dest='smooth'),
+    ]
+
+defaults = {
+    # output options
+    'format' : 'pdf',
+    'save_script' : False,
+    'prefix' : '',
+
+    # formatting options
+    'alternate' : False,
+    }
+
+
+class VideoPlotter(defapp.App):
+    def __init__(self):
+        defapp.App.__init__(self, options, defaults, no_std_opts=True)
+        self.tmpfiles = []
+
+    def make_plot(self, fname=None):
+        p = Plot()
+        p.output = "%s%s.%s" % (self.options.prefix, fname, self.options.format)
+        p.format = self.options.format
+        return p
+
+    def setup_png(self, plot):
+        # standard png options; usually correct; never tweaked for paper
+        if self.options.format == 'png':
+            plot.font_size = 'large'
+            plot.size   = (1024, 768)
+            plot.xticks = (0, 1)
+            plot.yticks = (0, 0.1)
+            plot.default_style = "linespoints"
+            return True
+        else:
+            return False
+
+    def load(self, datafile, name):
+        data = load_csv_file(datafile)
+        # make a copy without comments, etc.
+        if self.options.save_script:
+            fname = "%s.data" % name
+            write_csv_file(fname, data)
+            return (data, fname)
+        else:
+            tmp = write_csv_file(None, data)
+            # keep a reference so that it isn't deleted
+            self.tmpfiles.append(tmp)
+            return (data, tmp.name)
+
+    def render(self, p):
+        if self.options.save_script:
+            p.gnuplot_save(p.output + '.plot')
+        else:
+            p.gnuplot_exec()
+
+    def plot_vdecode(self, datafile, name, conf):
+        (data, fname)  = self.load(datafile, name)
+
+        decode_times = data[:,0]
+
+        avg = mean(decode_times)
+        med = median(decode_times)
+        dev = std(decode_times)
+        max = amax(decode_times)
+        min = amin(decode_times)
+
+        stats_label = "min=%.2fms max=%.2fms avg=%.2fms  median=%.2fms  std=%.2fms" \
+            % (min, max, avg, med, dev)
+
+        p = self.make_plot(name)
+
+        p.title = "raw decoding cost; input=%s; host=%s" \
+            % (conf['file'], conf['host'])
+
+        p.ylabel = "decoding cost (ms)"
+        p.xlabel = "frame number"
+        p.xrange = (0, len(data))
+        #p.xticks = (0, 100)
+        p.yticks = (0, 1)
+        p.yrange = (0, ceil(max))
+
+        p.curves = [curve(fname=fname, xcol=2, ycol=1, title="decoding cost")]
+        p.labels = [label(0.5, 0.9, stats_label, coord=['graph', 'screen'], align='center')]
+
+        #### Styling.
+
+        if not self.setup_png(p):
+            p.rounded_caps = True
+            p.font = 'Helvetica'
+
+            p.font_size = '10'
+            p.size = ('20cm', '10cm')
+            p.monochrome   = False
+            p.dashed_lines = False
+            p.key = 'off'
+            p.default_style = 'points lw 1'
+
+        if self.options.smooth:
+            p.default_style += " smooth bezier"
+
+        self.render(p)
+
+
+    def plot_file(self, datafile):
+        bname     = basename(datafile)
+        name, ext = splitext(bname)
+        conf      = decode(name)
+        plotters = {
+            'vdecode'   : self.plot_vdecode,
+            }
+
+        for plot_type in plotters:
+            if plot_type in conf:
+                try:
+                    plotters[plot_type](datafile, name, conf)
+                except IOError as err:
+                    self.err("Skipped '%s' (%s)." % err)
+                break
+        else:
+            self.err("Skipped '%s'; unkown experiment type."
+                     % bname)
+        # release all tmp files
+        self.tmpfiles = []
+
+    def default(self, _):
+        for i, datafile in enumerate(self.args):
+            self.out("[%d/%d] Processing %s ..." % (i + 1, len(self.args), datafile))
+            self.plot_file(datafile)
+
+if __name__ == "__main__":
+    VideoPlotter().launch()
-- 
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