--- /dev/null
+from telemeta.visualization.api import *
+from telemeta.visualization.waveform import *
+from telemeta.visualization.spectrogram import *
--- /dev/null
+# Copyright (C) 2007 Samalyse SARL
+# All rights reserved.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at http://svn.parisson.org/telemeta/TelemetaLicense.
+#
+# Author: Olivier Guilyardi <olivier@samalyse.com>
+
+from telemeta.core import *
+
+class IMediaItemVisualizer(Interface):
+ """Media item visualizer driver interface"""
+
+ def get_id():
+ """Return a short id alphanumeric, lower-case string."""
+
+ def get_name():
+ """Return the visualization name, such as "Waveform", "Spectral view",
+ etc..
+ """
+
+ def render(media_item, options=None):
+ """Generator that streams the visualization output as a PNG image"""
+
--- /dev/null
+
+from telemeta.core import *
+from telemeta.visualization.api import IMediaItemVisualizer
+from django.conf import settings
+from Tkinter import Tk
+import tkSnack
+from tempfile import NamedTemporaryFile
+import os
+import random
+
+class SnackCoreVisualizer(Component):
+ """Parent class for tkSnack-based visualization drivers"""
+
+ def get_snack_canvas(self):
+ #id = "telemeta" + str(random.randrange(0,1000000))
+ #self.tk_root = Tk(baseName=id)
+ self.tk_root = Tk()
+ tkSnack.initializeSnack(self.tk_root)
+ canvas = tkSnack.SnackCanvas(height=200)
+ canvas.pack()
+ return canvas
+
+ def get_snack_sound(self, media_item):
+ self.snd = tkSnack.Sound()
+ self.snd.read(settings.MEDIA_ROOT + '/' + media_item.file)
+ return self.snd
+
+ def canvas_to_png_stream(self, canvas):
+
+ psFile = NamedTemporaryFile(suffix='.ps')
+ canvas.postscript({'file': psFile.name, 'height': 200, 'width': 300})
+ pngFile = NamedTemporaryFile(suffix='.png')
+ os.system('convert -resize 300x200 ' + psFile.name + ' ' + pngFile.name)
+ psFile.close()
+
+ buffer = pngFile.read(0xFFFF)
+ while buffer:
+ yield buffer
+ buffer = pngFile.read(0xFFFF)
+
+ pngFile.close()
+ self.cleanup()
+
+ def cleanup(self):
+ self.snd.destroy()
+ self.tk_root.destroy()
--- /dev/null
+# Copyright (C) 2007 Samalyse SARL
+# All rights reserved.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at http://svn.parisson.org/telemeta/TelemetaLicense.
+#
+# Author: Olivier Guilyardi <olivier@samalyse.com>
+
+from telemeta.core import *
+from telemeta.visualization.api import IMediaItemVisualizer
+from telemeta.visualization.snack_core import SnackCoreVisualizer
+
+class SpectrogramVisualizer(SnackCoreVisualizer):
+ """Spectral view visualization driver"""
+
+ implements(IMediaItemVisualizer)
+
+ # possible alternative:
+ # http://jokosher.python-hosting.com/file/jokosher-extra/Waveform.py
+
+ def get_id(self):
+ return "spectrogram"
+
+ def get_name(self):
+ return "Spectrogram"
+
+ def render(self, media_item, options=None):
+ """Generator that streams the spectral view as a PNG image"""
+
+ canvas = self.get_snack_canvas()
+ snd = self.get_snack_sound(media_item)
+
+ canvas.create_spectrogram(0, 10, sound=snd, height=180, width=300 ,
+ windowtype="hamming", fftlength=1024, topfrequency=5000, channel="all", winlength=64)
+
+
+ stream = self.canvas_to_png_stream(canvas)
+
+ return stream
+
+
+
+
+
+
+
+
--- /dev/null
+CC= g++
+CXXFLAGS= -c -O2 -Wall -pedantic
+LDFLAGS= -lgd -lsndfile -ljpeg
+EXEC=wav2png
+
+all: anyoption.o main.o
+ $(CC) anyoption.o main.o $(LDFLAGS) -o $(EXEC)
+
+static: anyoption.o main.o
+ $(CC) -static anyoption.o main.o $(LDFLAGS) -lpng12 -lz -o $(EXEC)-static
+
+main.o: main.cpp
+ $(CC) $(CXXFLAGS) main.cpp
+
+anyoption.o: anyoption.cpp
+ $(CC) $(CXXFLAGS) anyoption.cpp
+
+clean:
+ rm ./*.o
+ rm $(EXEC)
--- /dev/null
+Telemeta notes:
+
+This is the (slighly modified) GPL'ed wav2png program that generates waveform
+at freesound, downloaded from:
+http://freesound.iua.upf.edu/files/wav2png.tar.gz
+
+It is used by the initial Telemeta WaveformVisualizer.
+
+You need the libgd and libsndfile libraries to compile it.
+
+You also need anyoption.h and anyoption.cpp from:
+http://www.hackorama.com/anyoption/
+
+Then simply type:
+
+$ make
+
+
--- /dev/null
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The licenses for most software are designed to take away your
+freedom to share and change it. By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users. This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it. (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.) You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+ To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have. You must make sure that they, too, receive or can get the
+source code. And you must show them these terms so they know their
+rights.
+
+ We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+ Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+ Finally, any free program is threatened constantly by software
+patents. We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary. To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ GNU GENERAL PUBLIC LICENSE
+ TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+ 0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License. The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language. (Hereinafter, translation is included without limitation in
+the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+ 1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+ 2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+ a) You must cause the modified files to carry prominent notices
+ stating that you changed the files and the date of any change.
+
+ b) You must cause any work that you distribute or publish, that in
+ whole or in part contains or is derived from the Program or any
+ part thereof, to be licensed as a whole at no charge to all third
+ parties under the terms of this License.
+
+ c) If the modified program normally reads commands interactively
+ when run, you must cause it, when started running for such
+ interactive use in the most ordinary way, to print or display an
+ announcement including an appropriate copyright notice and a
+ notice that there is no warranty (or else, saying that you provide
+ a warranty) and that users may redistribute the program under
+ these conditions, and telling the user how to view a copy of this
+ License. (Exception: if the Program itself is interactive but
+ does not normally print such an announcement, your work based on
+ the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+ 3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+ a) Accompany it with the complete corresponding machine-readable
+ source code, which must be distributed under the terms of Sections
+ 1 and 2 above on a medium customarily used for software interchange; or,
+
+ b) Accompany it with a written offer, valid for at least three
+ years, to give any third party, for a charge no more than your
+ cost of physically performing source distribution, a complete
+ machine-readable copy of the corresponding source code, to be
+ distributed under the terms of Sections 1 and 2 above on a medium
+ customarily used for software interchange; or,
+
+ c) Accompany it with the information you received as to the offer
+ to distribute corresponding source code. (This alternative is
+ allowed only for noncommercial distribution and only if you
+ received the program in object code or executable form with such
+ an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
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+
+If distribution of executable or object code is made by offering
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+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+ 4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+ 5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+ 6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+ 7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
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+excuse you from the conditions of this License. If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all. For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices. Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+ 8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded. In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+ 9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation. If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+ 10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission. For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this. Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+ NO WARRANTY
+
+ 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+ 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+ Gnomovision version 69, Copyright (C) year name of author
+ Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+ Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+ `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+ <signature of Ty Coon>, 1 April 1989
+ Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs. If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+*/
+
+/* Created by Bram de Jong <bram.dejong@gmail.com> for MTG http://www.mtg.upf.edu/
+ *
+ * You will need anyoption ( http://www.hackorama.com/anyoption/ ) and libsndfile
+ * ( http://www.mega-nerd.com/libsndfile/ ) and GD2 (http://www.boutell.com/gd/)
+ * to build this program.
+*/
+
+#include <math.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdio.h>
+#include <cctype>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <vector>
+#include <algorithm>
+
+#include "sndfile.h"
+
+#ifdef WIN32
+#include "gdwin32/gd.h"
+#else
+#include "gd.h"
+#endif
+
+#include "anyoption.h"
+
+typedef std::vector<long> ColorVector;
+
+long hex2dec(char h)
+{
+ switch(h)
+ {
+ case 'a': return 10;
+ case 'b': return 11;
+ case 'c': return 12;
+ case 'd': return 13;
+ case 'e': return 14;
+ case 'f': return 15;
+ default:
+ {
+ char tmp = h - '0';
+ if(tmp >= 0 && tmp <= 9)
+ return tmp;
+ else
+ return 0;
+ }
+ }
+}
+
+// string as a HEX HTML value 000000 (black) FF0000 (red) etc...
+long string2color(std::string s, gdImagePtr image)
+{
+ long r,g,b;
+ if(s.length() == 6)
+ {
+ std::transform(s.begin(), s.end(), s.begin(), (int (*)(int)) tolower);
+ r = (hex2dec(s.at(0))<<4) + hex2dec(s.at(1));
+ g = (hex2dec(s.at(2))<<4) + hex2dec(s.at(3));
+ b = (hex2dec(s.at(4))<<4) + hex2dec(s.at(5));
+ }
+ else
+ {
+ r = g = b = 0;
+ }
+
+ return gdImageColorAllocate(image, r, g, b);
+}
+
+void HSVtoRGB( float &r, float &g, float &b, float h, float s, float v )
+{
+ int i;
+ float f, p, q, t;
+
+ if( s == 0 ) {
+ // achromatic (grey)
+ r = g = b = v;
+ return;
+ }
+
+ h /= 60; // sector 0 to 5
+ i = (int)floor( h );
+ f = h - i; // factorial part of h
+ p = v * ( 1 - s );
+ q = v * ( 1 - s * f );
+ t = v * ( 1 - s * ( 1 - f ) );
+
+ switch( i ) {
+ case 0:
+ r = v;
+ g = t;
+ b = p;
+ break;
+ case 1:
+ r = q;
+ g = v;
+ b = p;
+ break;
+ case 2:
+ r = p;
+ g = v;
+ b = t;
+ break;
+ case 3:
+ r = p;
+ g = q;
+ b = v;
+ break;
+ case 4:
+ r = t;
+ g = p;
+ b = v;
+ break;
+ default: // case 5:
+ r = v;
+ g = p;
+ b = q;
+ break;
+ }
+
+}
+
+/* The hue value H runs from 0 to 360º. The saturation S is the degree of strength
+or purity and is from 0 to 1. Purity is how much white is added to the color, so S=1
+makes the purest color (no white). Brightness V also ranges from 0 to 1, where 0 is the black.*/
+// x in [0..1]
+long float2color(float value, gdImagePtr image)
+{
+ if(value > 1.f) value = 1.f;
+ else if(value < 0.f) value = 0.f;
+
+ float h;
+ float s;
+ float v;
+
+ h = (1.f-value)*360.0;
+ s = 0.8f;
+ v = 1.f;
+
+ float r,g,b;
+
+ HSVtoRGB(r,g,b,h,s,v);
+
+ return gdImageColorAllocate(image, (int)(r*255), (int)(g*255), (int)(b*255));
+}
+
+
+void getPeakSamplesInBlock(float *samples, long count, long channels, float &first, float &second, bool verbose)
+{
+ if (verbose)
+ std::cout << "\tprocessing " << count << " samples, " << channels << " channels" << std::endl;
+
+ if(count < 1)
+ {
+ first = second = 0.f;
+ if (verbose)
+ std::cout << "\texiting as there's no samples" << std::endl;
+ return;
+ }
+ else if(count < 2)
+ {
+ first = second = samples[0];
+ if (verbose)
+ std::cout << "\texiting as there's less than two samples" << std::endl;
+ return;
+ return;
+ }
+
+ float tlow = samples[0];
+ float thigh = samples[0];
+ long high_i = 0;
+ long low_i = 0;
+
+ for(long i=channels;i<count;i+=channels)
+ {
+ float val = samples[i];
+
+ if(val > thigh)
+ {
+ thigh = val;
+ high_i = i;
+ }
+
+ if(val < tlow)
+ {
+ tlow = val;
+ low_i = i;
+ }
+ }
+
+ if (high_i > low_i)
+ {
+ first = tlow;
+ second = thigh;
+ }
+ else
+ {
+ first = thigh;
+ second = tlow;
+ }
+
+ if (verbose)
+ std::cout << "\tprocessing: done" << std::endl;
+}
+
+bool getPositionAndValue(std::string line, long &position, float &value, long positionIncrement = 0)
+{
+ long pos;
+ float val;
+ int good;
+
+ good = sscanf(line.c_str(),"%ld,%f",&pos,&val);
+
+ if(good == 2 && pos >= 0)
+ {
+ position = pos;
+ value = val;
+ return true;
+ }
+
+ good = sscanf(line.c_str(),"%f",&val);
+
+ if(good == 1 && good != EOF)
+ {
+ position += positionIncrement;
+ value = val;
+ return true;
+ }
+
+ return false;
+}
+
+bool getPositionAndColor(std::string line, long &position, long &color, gdImagePtr image, long positionIncrement = 0)
+{
+ long pos;
+ char colorString[6];
+ int good;
+
+ good = sscanf(line.c_str(),"%ld,#%6s",&pos,colorString);
+
+ if(good == 2 && pos >= 0)
+ {
+ position = pos;
+ color = string2color(colorString,image);
+ return true;
+ }
+
+ good = sscanf(line.c_str(),"#%6s",colorString);
+
+ if(good == 1)
+ {
+ position += positionIncrement;
+ color = string2color(colorString,image);
+ return true;
+ }
+
+ return false;
+}
+
+ColorVector getColorValues(std::string filename, float samplesPerPixel, long width, gdImagePtr image)
+{
+ ColorVector colors;
+
+ char buffer[256];
+ std::string line;
+ std::ifstream infile;
+ infile.open(filename.c_str(), std::ifstream::in);
+
+ float value = 0.f;
+ long color = 0;
+ long position = 0;
+ bool inputGood = true;
+ bool colorFileUsesColors = false;
+ long stepsize = 0;
+ std::vector<float> values;
+
+ if(infile.good())
+ {
+ infile.getline(buffer,256);
+ line = buffer;
+
+ int success = sscanf(line.c_str(),"[%ld]",&stepsize);
+ if(success == 1)
+ {
+ if(infile.good())
+ {
+ infile.getline(buffer,256);
+ line = buffer;
+ }
+ else
+ {
+ return colors;
+ }
+ }
+ else
+ {
+ stepsize = 0;
+ }
+
+ long hasHasChar = std::string(line).find("#");
+
+ if(hasHasChar > 0)
+ {
+ colorFileUsesColors = true;
+ }
+ }
+ else
+ {
+ return colors;
+ }
+
+ if(colorFileUsesColors)
+ inputGood = getPositionAndColor(line,position,color,image,stepsize);
+ else
+ inputGood = getPositionAndValue(line,position,value,stepsize);
+
+ float nextValue = value;
+ long nextColor = color;
+
+ for(long i=0;i<width;i++)
+ {
+ long sampleLocation = (long)ceilf((double)i * (double)samplesPerPixel);
+
+ while(sampleLocation >= position && inputGood)
+ {
+ color = nextColor;
+ value = nextValue;
+
+ if(infile.good())
+ {
+ infile.getline(buffer,256);
+ line = buffer;
+
+ if(colorFileUsesColors)
+ {
+ inputGood = getPositionAndColor(line,position,nextColor,image,stepsize);
+ }
+ else
+ {
+ inputGood = getPositionAndValue(line,position,nextValue,stepsize);
+ }
+ }
+ else
+ {
+ inputGood = false;
+ }
+ }
+
+ if(colorFileUsesColors)
+ colors.push_back(color);
+ else
+ values.push_back(value);
+
+ }
+
+ infile.close();
+
+ if(colorFileUsesColors)
+ return colors;
+
+ if(values.size())
+ {
+ int type = 1;
+
+ switch(type)
+ {
+ case 0:
+ {
+ for(unsigned long k=0;k<values.size();k++)
+ {
+ if(values[k] < 0.f)
+ values[k] = 0.f;
+
+ float scaledValue = sqrt(values[k]) / sqrt(11025);
+
+ colors.push_back(float2color(scaledValue,image));
+ }
+
+ break;
+ }
+ case 1:
+ {
+ for(unsigned long k=0;k<values.size();k++)
+ {
+ if(values[k] < 0.f)
+ values[k] = 0.f;
+
+ float scaledValue = log(values[k]+1) / log(512+1);
+
+ colors.push_back(float2color(scaledValue,image));
+ }
+
+ break;
+ }
+ case 2:
+ default:
+ {
+ float maxValue = values[0];
+ float minValue = values[0];
+
+ for(unsigned long j=1;j<values.size();j++)
+ {
+ if(values[j] > maxValue)
+ maxValue = values[j];
+
+ if(values[j] < minValue)
+ minValue = values[j];
+ }
+
+ if(minValue != maxValue)
+ {
+ for(unsigned long k=0;k<values.size();k++)
+ {
+ colors.push_back(float2color((values[k] - minValue) / (maxValue - minValue),image));
+ }
+ }
+ else
+ {
+ for(unsigned long k=0;k<colors.size();k++)
+ {
+ colors.push_back(float2color(1.0,image));
+ }
+ }
+
+ break;
+ }
+ }
+ }
+
+ return colors;
+}
+
+inline long round(float x)
+{
+ return (long)floorf(x + 0.5f);
+}
+
+// this is pretty ugly and should be removed :-)
+float oldX, oldY;
+
+void moveTo(float x, float y)
+{
+ oldX = x;
+ oldY = y;
+}
+
+void lineTo(gdImagePtr image, float x, float y, long color, long padding, long width, long height, bool verbose)
+{
+ long x1 = (long)round(oldX)+padding;
+ long y1 = (long)round(oldY)+padding;
+ long x2 = (long)round(x)+padding;
+ long y2 = (long)round(y)+padding;
+
+ // GD seems to segfault when we try to draw anti-aliased lines to the teges :-(
+ y1 = std::max((long)0,std::min(height-2, y1));
+ y2 = std::max((long)0,std::min(height-2, y2));
+
+ if (verbose)
+ std::cout << "\tdrawing line: (" << x1 << "," << y1 << ") -> (" << x2 << "," << y2 << "), color = " << std::hex << color << " image : " << image << std::dec << std::endl;
+
+ gdImageLine(image,x1,y1,x2,y2,color);
+ oldX = x;
+ oldY = y;
+
+ if (verbose)
+ std::cout << "\tdrawing line: done" << std::endl;
+}
+
+int main(int argc, char* argv[])
+{
+ AnyOption *opt = new AnyOption();
+
+ opt->setOption("input",'i');
+ opt->setOption("width",'w');
+ opt->setOption("height",'h');
+ opt->setOption("output",'o');
+ opt->setOption("colorfile",'c');
+ opt->setOption("linecolor",'l');
+ opt->setOption("backgroundcolor",'b');
+ opt->setOption("zerocolor",'z');
+ opt->setOption("padding",'p');
+ opt->setOption("verbose",'v');
+
+ opt->setOption("type",'t');
+ opt->setOption("quality",'q');
+
+ opt->addUsage( "Usage: wav2png --input wavefile.wav" );
+ opt->addUsage( "\t" );
+ opt->addUsage( "\tAdditional options: --width 300 --height 151 --output image.jpg --linecolor ff00aa --backgroundcolor 002222 --zerocolor ff0000 --colorfile filename --padding 2 --verbose true --type jpeg --quality 85" );
+ opt->addUsage( "\tShort command line switches: -i -w -h -o -l -b -z -c -o");
+ opt->addUsage( "\t" );
+ opt->addUsage( "\twidth: width of PNG (default: 300)");
+ opt->addUsage( "\theight: height of PNG (default: 151)");
+ opt->addUsage( "\toutput: output filename (default: input filename with '.png' appended)");
+ opt->addUsage( "\tlinecolor: color of waveform lines (default: 323232)");
+ opt->addUsage( "\tbackgroundcolor: color of background (default: FFFFFF)");
+ opt->addUsage( "\tzerocolor: color of line through zero (default: 960000)");
+ opt->addUsage( "\t\tcolors are defined like HTML colors in hex");
+ opt->addUsage( "\tcolorfile: file with (samplePosition,value) pairs for coloring");
+ opt->addUsage( "\tpadding: padding around the edge");
+ opt->addUsage( "\tverbose: true or false");
+ opt->addUsage( "\ttype: png or jpeg");
+ opt->addUsage( "\tquality: jpeg quality between 0 and 100");
+
+ opt->processCommandArgs( argc, argv );
+
+ std::string inputFilename;
+ std::string outputFilename;
+
+ bool verbose = false;
+ if( opt->getValue("verbose") != NULL && strcmp(opt->getValue("verbose"), "true") == 0)
+ verbose = true;
+
+ if (verbose)
+ std::cout << "verbose true" << std::endl;
+
+ if (verbose) std::cout << "parsing options" << std::endl;
+
+ long quality = -1;
+ if ( opt->getValue("quality") != NULL )
+ quality = atoi(opt->getValue("quality"));
+
+ if (verbose)
+ std::cout << "quality " << quality << std::endl;
+
+ bool isPng = true;
+ if ( opt->getValue("type") != NULL && strcmp(opt->getValue("type"), "jpeg") == 0)
+ isPng = false;
+
+ if (verbose)
+ std::cout << "isPng " << (isPng?"true":"false") << std::endl;
+
+ if( opt->getValue("input") != NULL )
+ {
+ inputFilename = opt->getValue("input");
+ }
+ else
+ {
+ opt->printUsage();
+ return 1;
+ }
+
+ if (verbose)
+ std::cout << "input filename " << inputFilename << std::endl;
+
+ if( opt->getValue("output") != NULL )
+ {
+ outputFilename = opt->getValue("output");
+ }
+ else
+ {
+ outputFilename = inputFilename + std::string(".png");
+ }
+
+ if (verbose)
+ std::cout << "output filename " << outputFilename << std::endl;
+
+ long width = 354;
+ if( opt->getValue("width") != NULL )
+ {
+ width = atoi(opt->getValue("width"));
+
+ if(width <= 0)
+ return 1;
+ }
+
+
+ if (verbose)
+ std::cout << "width " << width << std::endl;
+
+ long height = 165;
+ if( opt->getValue("height") != NULL )
+ {
+ height = atoi(opt->getValue("height"));
+
+ if(height <= 0)
+ return 1;
+ }
+
+ if (verbose)
+ std::cout << "height " << height << std::endl;
+
+ long padding = 2;
+ if( opt->getValue("padding") != NULL )
+ {
+ padding = atoi(opt->getValue("padding"));
+
+ if(padding<0)
+ return 1;
+ }
+
+ if (verbose)
+ std::cout << "padding " << padding << std::endl;
+
+ std::string colorFilename("");
+ if( opt->getValue("colorfile") != NULL )
+ {
+ colorFilename = std::string(opt->getValue("colorfile"));
+ }
+
+ if (verbose)
+ std::cout << "color filename " << colorFilename << std::endl;
+
+ if (verbose) std::cout << "opening wave file" << std::endl;
+
+ SNDFILE *infile;
+ SF_INFO sfinfo ;
+
+ // open the soundfile
+ if(!(infile = sf_open (inputFilename.c_str(), SFM_READ, &sfinfo)))
+ {
+ return 1;
+ };
+
+ if(sfinfo.frames == 0 || sfinfo.channels == 0)
+ {
+ sf_close(infile);
+ return 1;
+ }
+
+ float samplesPerPixel = (float) sfinfo.frames / (float) width;
+ long maxReadSize = (long)ceilf(samplesPerPixel);
+
+ if (verbose) std::cout << "samps/pixel "<< samplesPerPixel << std::endl;
+
+ if (verbose) std::cout << "allocating image..." << std::endl;
+ gdImagePtr image = gdImageCreateTrueColor(width+padding*2, height+padding*2);
+ if (verbose) std::cout << "done..." << std::endl;
+
+ ColorVector colors;
+ if(colorFilename != "")
+ {
+ if (verbose) std::cout << "getting color values" << std::endl;
+ colors = getColorValues(colorFilename,samplesPerPixel,width,image);
+ }
+
+
+ long backgroundColor;
+ long lineColor;
+ long zeroColor;
+
+ if (verbose) std::cout << "parsing more options" << std::endl;
+
+ if( opt->getValue("linecolor") != NULL )
+ lineColor = string2color(opt->getValue("linecolor"),image);
+ else
+ lineColor = string2color("FFFFFF",image);
+
+ if (verbose)
+ std::cout << "line color " << std::hex << lineColor << std::dec << std::endl;
+
+ if( opt->getValue("backgroundcolor") != NULL )
+ backgroundColor = string2color(opt->getValue("backgroundcolor"),image);
+ else
+ backgroundColor = string2color("000000",image);
+
+ if (verbose)
+ std::cout << "background color " << std::hex << backgroundColor << std::dec << std::endl;
+
+ if( opt->getValue("zerocolor") != NULL )
+ zeroColor = string2color(opt->getValue("zerocolor"),image);
+ else
+ zeroColor = string2color("960000",image);
+
+ if (verbose)
+ std::cout << "zero color " << std::hex << zeroColor << std::dec << std::endl;
+
+ gdImageFilledRectangle(image,0,0,width+padding*2-1,height+padding*2-1, backgroundColor);
+ gdImageSetAntiAliased(image,lineColor);
+ moveTo(0,height*0.5f);
+
+
+ // sampling data
+ long dataSize = sfinfo.channels * maxReadSize;
+ if (verbose) std::cout << "allocating " << dataSize << " bytes" << std::endl;
+ float *data = new float[dataSize];
+ if (verbose) std::cout << "allocated..." << std::endl;
+
+ float first = 0, second = 0;
+
+ // we need at least width samples to do something usefull...
+ for(long i=0;i<width;i++)
+ {
+ if (verbose && !(i % std::max(width/20,(long)1)))
+ std::cout << "looping over sound " << i+1 << " of " << width << std::endl;
+
+ if (colors.size() && (unsigned) i < colors.size())
+ {
+ if (verbose)
+ std::cout << "\tsetting antialiased line color..." << std::endl;
+ gdImageSetAntiAliased(image,colors[i]);
+ }
+
+ float start = i * samplesPerPixel;
+ float end = (i + 1) * samplesPerPixel;
+
+ long blockSize = (long) floorf(end + 0.5f) - (long) floorf(start + 0.5f);
+
+ if(blockSize > maxReadSize)
+ {
+ blockSize = maxReadSize;
+ }
+ else if(blockSize < 1)
+ {
+ lineTo(image, (float)i, height * 0.5f * (1.f - first), gdAntiAliased, padding, width, height, verbose);
+ lineTo(image, (float)i, height * 0.5f * (1.f - second), gdAntiAliased, padding, width, height, verbose);
+ continue;
+ }
+
+ if (verbose && !(i % std::max(width/20,(long)1)))
+ std::cout << "\treading wave file" << std::endl;
+
+ long readcount = sf_readf_float(infile, data, blockSize);
+
+ if(readcount == 0)
+ {
+ if (verbose)
+ std::cout << "\tthis is probably a broken wave file... It reported more samples than it has!" << std::endl;
+ break;
+ }
+ if(readcount < blockSize)
+ {
+ if (verbose)
+ std::cout << "\twe just read a non-complete block..." << std::endl;
+ }
+
+ if (verbose && !(i % std::max(width/20,(long)1)))
+ std::cout << "\tread OK" << std::endl;
+
+ if (verbose && !(i % std::max(width/20,(long)1)))
+ std::cout << "\tgetting sample peaks" << std::endl;
+
+ getPeakSamplesInBlock(data, readcount, sfinfo.channels, first, second, verbose);
+
+ if (verbose && !(i % std::max(width/20,(long)1)))
+ std::cout << "\tpeak OK" << std::endl;
+
+ if(first != second)
+ {
+ lineTo(image, (float)i, height * 0.5f * (1.f - first), gdAntiAliased, padding, width, height, verbose);
+ lineTo(image, (float)i, height * 0.5f * (1.f - second), gdAntiAliased, padding, width, height, verbose);
+ }
+ else
+ {
+ lineTo(image, (float)i, height * 0.5f * (1.f - first), gdAntiAliased, padding, width, height, verbose);
+ }
+ }
+
+ if (verbose)
+ std::cout << "closing sound file" << std::endl;
+
+ sf_close (infile) ;
+
+ if (verbose)
+ std::cout << "closed" << std::endl;
+
+
+ if (verbose)
+ std::cout << "generating GD image" << std::endl;
+
+ if (verbose)
+ std::cout << "\topening output file" << std::endl;
+
+ FILE *outputFile = fopen(outputFilename.c_str(),"wb");
+
+ if (verbose)
+ std::cout << "\tgdImageCreate" << std::endl;
+
+ if (isPng)
+ gdImagePng(image,outputFile);
+ else
+ gdImageJpeg(image,outputFile,quality);
+
+ if (verbose)
+ std::cout << "\tclose output file" << std::endl;
+
+ fclose(outputFile);
+
+ if (verbose)
+ std::cout << "\tgdImageDestroy" << std::endl;
+
+ gdImageDestroy(image);
+
+ if (verbose)
+ std::cout << "deleting data" << std::endl;
+
+ delete data;
+
+ if (verbose)
+ std::cout << "all fine and dandy, exiting" << std::endl;
+
+ return 0;
+}
--- /dev/null
+# Copyright (C) 2007 Samalyse SARL
+# All rights reserved.
+#
+# This software is licensed as described in the file COPYING, which
+# you should have received as part of this distribution. The terms
+# are also available at http://svn.parisson.org/telemeta/TelemetaLicense.
+#
+# Author: Olivier Guilyardi <olivier@samalyse.com>
+
+from telemeta.core import *
+from telemeta.visualization.api import IMediaItemVisualizer
+from django.conf import settings
+from tempfile import NamedTemporaryFile
+import os
+import os.path
+
+class WaveFormVisualizer(Component):
+ """WaveForm visualization driver"""
+
+ implements(IMediaItemVisualizer)
+
+ # possible alternative:
+ # http://jokosher.python-hosting.com/file/jokosher-extra/Waveform.py
+
+ def get_id(self):
+ return "waveform"
+
+ def get_name(self):
+ return "Waveform"
+
+ def render(self, media_item, options=None):
+ """Generator that streams the waveform as a PNG image"""
+
+ pngFile = NamedTemporaryFile(suffix='.png')
+ wav2png = os.path.dirname(__file__) + '/wav2png/wav2png'
+ args = "-i " + settings.MEDIA_ROOT + '/' + media_item.file + " "
+ args += "-o " + pngFile.name + " "
+ args += "-b ffffff "
+ args += "-l 00bb28 "
+ args += "-z 990000 "
+ args += "-w 300 "
+ args += "-h 151 "
+
+ os.system(wav2png + " " + args)
+
+ buffer = pngFile.read(0xFFFF)
+ while buffer:
+ yield buffer
+ buffer = pngFile.read(0xFFFF)
+
+ pngFile.close()
+
+
+
+
+
+
+
+
projects / telemeta.git / commitdiff