Merge branch 'parallel-synapse-generation' into 'main'

parallelize synapse generation using OpenMP

See merge request then-try-this/samplebrain!6

README.md

@@ -14,7 +14,7 @@ tweakable parameters until it became slightly out of control.
 
 ![](docs/pics/screenshot.png)
 
-Quick start:
+# How do I use this thing?
 
 1. Load a bunch of short wav files into the brain
 2. Click (re)generate brain
@@ -23,23 +23,17 @@ Quick start:
 5. Press play
 6. Tweak brain
 
-The default block size (3000) is really high to prevent CPU glitches -
-500 to 1000 is a better range. Larger wav files like whole tracks can
-be used, but take a long time to process, after which they can be
-saved as "brain" files and instantly reloaded.
+Larger wav files like whole tracks can be used, but take a long time
+to process, after which they can be saved as "brain" files and
+instantly reloaded.
 
-# [Demo brain session](https://static.thentrythis.org/samplebrain/demo.samplebrain)
-
-Load this file using "load session" not "load brain" (sessions contain
+Check the [Manual](docs/manual.md) here for the details on all the
+parameters and try out the [demo brain session](https://static.thentrythis.org/samplebrain/demo.samplebrain).
+Load the demo using "load session" not "load brain" (sessions contain
 both the target and brain samples). The original samples used to
 create the demo session [can be found here for
 testing](https://static.thentrythis.org/samplebrain/samples/).
 
-# [Manual](docs/manual.md)
-
-Full description of all the parameters and a bit of the thinking
-behind it.
-
 # Download
 
 As this is experimental non-commercial software (only originally
@@ -47,19 +41,24 @@ written to run on a couple of computers!) you will have to bear with
 us as we gradually stabilise things based on your feedback. There
 might currently be problems running it on 64bit Windows.
             
-* **Windows**: [samplebrain_0.18.3_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.3_win.zip)
-* **Mac (intel/m1)**: [samplebrain_0.18.3_macintel.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.3_macintel.app.zip)
+* **Windows**: [samplebrain_0.18.4_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.4_win.zip)
+* **Mac (intel/m1)**: [samplebrain_0.18.4_macintel.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.4_macintel.app.zip)
 
-(New 0.18.3 release fixes loading samples from paths longer than 255 characters)
+Changes in 0.18.4: New audio device settings window and updated
+windows build. Better default block size, tool tip tweaks and fixes
+for dark themes by [Claude Heiland-Allen](https://mathr.co.uk/).
+
+For old versions see the [changelog](changelog.md)
     
 Mac note: As this software is not on the apple store, to run the
 binary you need to tell your mac it's ok: Go to System Preferences >
 Security & Privacy > General. At the bottom of the window, select
 "Allow apps to be downloaded from Anywhere".
 
-Thank you to [Nik Gaffney](http://fo.am) for help with the Apple builds
+Thank you to [Nik Gaffney](http://fo.am) for help with the Apple
+builds. 
         
-### Linux
+# Linux install
 <a href='https://flathub.org/apps/details/org.thentrythis.Samplebrain'><img width='200' alt='Download on Flathub' src='https://flathub.org/assets/badges/flathub-badge-en.png'/></a>
 
 #### Ubuntu
@@ -71,98 +70,12 @@ If you'd like the right font, optionally:
 
     $ sudo apt install ttf-mscorefonts-installer
 
-# Old/broken/spurious binaries
-
-* **Windows**: [samplebrain_0.18.2_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.2_win.zip)    
-* **Windows**: [samplebrain_0.18.1_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.1_win.zip)
-* **Windows**: [samplebrain_0.18_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18_win.zip)
-
-* **Mac (intel/m1)**: [samplebrain_0.18.1_macintel.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.1_macintel.app.zip)
-* **Mac (intel)**: [samplebrain_0.18_macintel.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18_macintel.zip)
-* **Mac (m1)**: [samplebrain_0.18_m1_v2.dmg](https://static.thentrythis.org/samplebrain/samplebrain_0.18_m1_v2.dmg) 
-                
-# Building from source
-## Linux (Ubuntu)
-Install libraries for the sample engine (use brew on mac, MinGW on win):
-
-    $ sudo apt install libsndfile1-dev portaudio19-dev liblo-dev libfftw3-dev
-
-Install dependencies for the interface:
-
-    $ sudo apt install build-essential qtcreator qt5-default
-
-Build & run it:
-
-    $ mkdir build
-    $ cd build
-    $ qmake ..
-    $ make
-    $ sudo make install
-    $ samplebrain
-
-## Mac
-Install libraries for sample engine:
-
-    $ brew install fftw portaudio liblo libsndfile
-
-Install dependencies for the interface:
-
-    $ brew install qt
-    $ brew link qt
-
-Build & run it:
-
-    $ mkdir build
-    $ cd build
-    $ qmake ..
-    $ make
-
-`samplebrain.app` should then be in the app folder for you to run.
-
-# Mac build additions
-
-To make a mac app bundle:
-
-Run `macdeployqt` which copies all dependencies inside the app.
-
-    $ cd build
-    $ macdeployqt
-
-If the icon is not visible, you might need to copy desktop/samplebrain.icns (the icon) to the Resources directory in the app bundle.
-
-    $ cp ../desktop/samplebrain.icns samplebrain.app/Contents/Resources
-
-Then edit Info.plist to add samplebrain.icns to CFBundleIconFile. Key `CFBundleIconFile` should match:
-
-	<key>CFBundleIconFile</key>
-	<string>samplebrain.icns</string>
-
-You might also need to resign the app bundle after making any changes
-
-    $ codesign --force --deep --sign - samplebrain.app
-
-## What's here
-
-1. brain:
-    * samplebrain engine code
-2. app:
-    * code to build the Qt GUI app
-3. gui:
-    * qt designer project files
-4. desktop:
-    * various icon files etc
-4. cooking:
-    * some sketches and ideas
-    * proof of concept written in python
-    * brief initial (abandoned) attempt at clojure version
+# [Building from source](building.md)                
 
 MFCC algo courtesy of the Aquila library by Zbigniew Siciarz MIT/X11
-licence 2007-2014 (see brain/src/aquila/LICENCE)
-
-This program is free software licenced under GNU General Public
-License version 2 (see LICENCE).
-
-Written by [Dave Griffiths at Then Try This](http://thentrythis.org).
+licence 2007-2014 (see brain/src/aquila/LICENCE). This program is free
+software licenced under GNU General Public License version 2 (see
+LICENCE). Written by [Dave Griffiths at Then Try This](http://thentrythis.org).
 
 ## Links
 

brain/src/brain.cpp

@@ -16,6 +16,7 @@
 
 #include <iostream>
 #include <algorithm>
+#include <atomic>
 #include <sndfile.h>
 #include <float.h>
 #include <spiralcore/audio.h>
@@ -242,10 +243,12 @@ void brain::build_synapses_thresh(search_params &params, double thresh) {
   m_average_error = calc_average_diff(params)*thresh;
   double err = m_average_error*thresh;
   u32 brain_size = m_blocks.size();
-  u32 outer_index = 0;
-  for (auto &i : m_blocks) {
+  std::atomic<u32> progress{0};
+  #pragma omp parallel for
+  for (u32 outer_index = 0; outer_index < brain_size; ++outer_index) {
+    auto &i = m_blocks[outer_index];
     u32 index = 0;
-    status::update("building synapses %d%%",(int)(outer_index/(float)brain_size*100));
+    status::update("building synapses %d%%",(int)(progress/(float)brain_size*100));
     for (auto &j : m_blocks) {
       if (index!=outer_index) {
         // collect connections that are under threshold in closeness
@@ -256,30 +259,32 @@ void brain::build_synapses_thresh(search_params &params, double thresh) {
       }
       ++index;
     }
-    ++outer_index;
+    ++progress;
   }  
 }
 
 void brain::build_synapses_fixed(search_params &params) {
   //m_average_error = calc_average_diff(params)*thresh;
   u32 brain_size = m_blocks.size();
-  u32 outer_index = 0;
   u32 num_synapses = NUM_FIXED_SYNAPSES;
   if (num_synapses>=m_blocks.size()) num_synapses=m_blocks.size()-1;
 
   // need to stop the progress updates flooding osc
   u32 update_period = 100;
-  u32 update_tick = 0;
-
-  for (auto &i:m_blocks) {
+  std::atomic<u32> update_tick{0};
+  std::atomic<u32> progress{0};
+  #pragma omp parallel for
+  for (u32 outer_index = 0; outer_index < brain_size; ++outer_index) {
+    auto &i = m_blocks[outer_index];
     if (update_tick>update_period) {
-      status::update("building synapses %d%%",(int)(outer_index/(float)brain_size*100));     
+      status::update("building synapses %d%%",(int)(progress/(float)brain_size*100));
       update_tick=0;
     }
     update_tick++;
  
     u32 index = 0;
     vector<pair<u32,double>> collect;
+    collect.reserve(brain_size);
 
     // collect comparisons to all other blocks
     for (auto &j:m_blocks) {
@@ -304,7 +309,7 @@ void brain::build_synapses_fixed(search_params &params) {
       i.get_synapse().push_back(collect[n].first);
     }
 
-    ++outer_index;
+    ++progress;
   }
   status::update("Done: %d synapses grown for %d blocks",num_synapses*brain_size,brain_size);
 }

building.md

@@ -0,0 +1,59 @@
+# Building from source
+## Linux (Ubuntu)
+Install libraries for the sample engine (use brew on mac, MinGW on win):
+
+    $ sudo apt install libsndfile1-dev portaudio19-dev liblo-dev libfftw3-dev
+
+Install dependencies for the interface:
+
+    $ sudo apt install build-essential qtcreator qt5-default
+
+Build & run it:
+
+    $ mkdir build
+    $ cd build
+    $ qmake ..
+    $ make
+    $ sudo make install
+    $ samplebrain
+
+## Mac
+Install libraries for sample engine:
+
+    $ brew install fftw portaudio liblo libsndfile
+
+Install dependencies for the interface:
+
+    $ brew install qt
+    $ brew link qt
+
+Build & run it:
+
+    $ mkdir build
+    $ cd build
+    $ qmake ..
+    $ make
+
+`samplebrain.app` should then be in the app folder for you to run.
+
+# Mac build additions
+
+To make a mac app bundle:
+
+Run `macdeployqt` which copies all dependencies inside the app.
+
+    $ cd build
+    $ macdeployqt
+
+If the icon is not visible, you might need to copy desktop/samplebrain.icns (the icon) to the Resources directory in the app bundle.
+
+    $ cp ../desktop/samplebrain.icns samplebrain.app/Contents/Resources
+
+Then edit Info.plist to add samplebrain.icns to CFBundleIconFile. Key `CFBundleIconFile` should match:
+
+	<key>CFBundleIconFile</key>
+	<string>samplebrain.icns</string>
+
+You might also need to resign the app bundle after making any changes
+
+    $ codesign --force --deep --sign - samplebrain.app

changelog.md

@@ -0,0 +1,27 @@
+# Changlog
+
+0.18.3
+
+* **Windows**: [samplebrain_0.18.3_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.3_win.zip)
+* **Mac (intel/m1)**: [samplebrain_0.18.3_macintel.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.3_macintel.app.zip)
+
+Changes: Release fixes loading samples from paths longer than 255 characters
+
+0.18.2
+
+* **Windows**: [samplebrain_0.18.2_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.2_win.zip)    
+
+Changes: Crash fix when closing load session file dialog
+
+0.18.1
+
+* **Windows**: [samplebrain_0.18.1_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.1_win.zip)
+* **Mac (intel/m1)**: [samplebrain_0.18.1_macintel.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18.1_macintel.app.zip)
+
+Changes: Turned off microphone input to prevent security problems
+
+0.18 (initial release)
+
+* **Windows**: [samplebrain_0.18_win.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18_win.zip)
+* **Mac (intel)**: [samplebrain_0.18_macintel.zip](https://static.thentrythis.org/samplebrain/samplebrain_0.18_macintel.zip)
+* **Mac (m1)**: [samplebrain_0.18_m1_v2.dmg](https://static.thentrythis.org/samplebrain/samplebrain_0.18_m1_v2.dmg) 

samplebrain.pro

@@ -47,9 +47,9 @@ SOURCES += app/MainWindow.cpp \
 INCLUDEPATH += brain/src
 INCLUDEPATH += /usr/local/include
 INCLUDEPATH += /opt/homebrew/include
-LIBS += -L.. -L/usr/local/lib -L/opt/homebrew/lib -lportaudio -lfftw3 -lsndfile -llo -ldl -lpthread -lm
+LIBS += -L.. -L/usr/local/lib -L/opt/homebrew/lib -lportaudio -lfftw3 -lsndfile -llo -ldl -lpthread -lm -fopenmp
 
-QMAKE_CXXFLAGS += -O3 -Wall -Wno-unused -std=c++11
+QMAKE_CXXFLAGS += -O3 -fopenmp -Wall -Wno-unused -std=c++11
 
 # assets
 RESOURCES = app/samplebrain.qrc