saving stereo

README.md

@@ -33,6 +33,10 @@ 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/).
+
+# Community
+
+* https://www.reddit.com/r/samplebrain/
     
 # Download
 

app/MainWindow.cpp

@@ -113,8 +113,8 @@ void MainWindow::init_from_session(const string &filename) {
   ifstream ifs(filename.c_str(),ios::binary);
   if (!ifs) return;
   
-  brain s,t;
-  u32 version=0;
+  brain s,t,lt;
+  u32 version=1;
   ifs||version;
   renderer r(s,t);
   ifs||r;
@@ -133,7 +133,14 @@ void MainWindow::init_from_session(const string &filename) {
   ifs||source_window||target_window;
   // todo: probably don't need to load all the sample data too :/
   ifs||s;
-  ifs||t;
+  ifs||t;  // left
+  ifs||lt; // right
+
+  if (version>0) {
+    ifs||m_stereo;
+    m_Ui.checkBoxStereo->setChecked(m_stereo);
+  }
+
 
   // brain tweaks
   search_params * p = r.get_params();
@@ -159,7 +166,7 @@ void MainWindow::init_from_session(const string &filename) {
   m_Ui.spinBoxSynapses->setValue(p->m_num_synapses);
   m_Ui.sliderSlideError->setValue(r.get_slide_error());
   m_Ui.spinBoxSlideError->setValue(r.get_slide_error());
-
+  
   // target
   if (t.get_samples().size()>0) {
     // extract target filename from brain sample
@@ -198,8 +205,6 @@ void MainWindow::init_from_session(const string &filename) {
   m_Ui.sliderAutotune->setValue(r.get_autotune()*100);
   m_Ui.doubleSpinBoxAutotune->setValue(r.get_autotune());
 
-
-
 }
 
 #endif

app/MainWindow.h

@@ -393,7 +393,11 @@ private slots:
   }
 
   void stereo_mode(bool s) {
+    m_stereo=s;
     send_audio_osc("/stereo","i",s);
+    // irritating but need to tell process thread about stereo state
+    // just to it can save it to the session file
+    send_process_osc("/stereo","i",s);
   }
 
   void net_enable(int id) {
@@ -467,6 +471,7 @@ private:
   audio_thread *m_audio_thread;
   
   string m_audio_port;
-  string m_process_port;
+  string m_process_port; 
   QString m_format_string;
+  bool m_stereo;
 };

app/process_thread.cpp

@@ -140,6 +140,10 @@ void process_thread::process() {
       if (name=="/save_session") {
         save_session(cmd.get_string(0));
       }
+      if (name=="/stereo") {
+        // only for session file save
+        m_stereo=cmd.get_int(0);
+      }
     }
 #ifdef WIN32 
     Sleep(1);
@@ -174,16 +178,7 @@ void process_thread::load_session(const std::string &filename) {
   m_left_target.clear();
   m_right_target.clear();
   ifstream ifs(filename.c_str(),ios::binary);
-  u32 version=0;
-  ifs||version;
-  ifs||(*m_left_renderer);
-  ifs||(*m_right_renderer);
-  ifs||m_source_block_size||m_source_overlap;
-  ifs||m_target_block_size||m_target_overlap;
-  ifs||m_window_type||m_target_window_type;
-  ifs||m_source;
-  ifs||m_left_target;
-  ifs||m_right_target;
+  stream_session(ifs);
   ifs.close();
   pthread_mutex_unlock(m_brain_mutex);
 }
@@ -191,16 +186,23 @@ void process_thread::load_session(const std::string &filename) {
 void process_thread::save_session(const std::string &filename) {
   pthread_mutex_lock(m_brain_mutex);
   ofstream ofs(filename.c_str(),ios::binary);
-  u32 version=0;
-  ofs||version;
-  ofs||(*m_left_renderer);
-  ofs||(*m_right_renderer);
-  ofs||m_source_block_size||m_source_overlap;
-  ofs||m_target_block_size||m_target_overlap;
-  ofs||m_window_type||m_target_window_type;
-  ofs||m_source;
-  ofs||m_left_target;
-  ofs||m_right_target;
+  stream_session(ofs);
   ofs.close();
   pthread_mutex_unlock(m_brain_mutex);
 }
+
+void process_thread::stream_session(std::ios &fs) {
+  u32 version=1;
+  fs||version;
+  fs||(*m_left_renderer);
+  fs||(*m_right_renderer);
+  fs||m_source_block_size||m_source_overlap;
+  fs||m_target_block_size||m_target_overlap;
+  fs||m_window_type||m_target_window_type;
+  fs||m_source;
+  fs||m_left_target;
+  fs||m_right_target;
+  if (version>0) {
+    fs||m_stereo;
+  }
+}

app/process_thread.h

@@ -54,13 +54,16 @@ namespace spiralcore {
     brain m_source, m_left_target, m_right_target;
 
   private:
-	OSC_server m_osc;
+    void stream_session(std::ios &fs);
+      
+    OSC_server m_osc;
     u32 m_source_block_size;
     float m_source_overlap;
     u32 m_target_block_size;
     float m_target_overlap;
     window::type m_window_type;
     window::type m_target_window_type;
+    bool m_stereo;
     pthread_t *m_thread;
 
     // only use in mutex obvs...

brain/src/spiralcore/OSC_server.cpp

@@ -60,7 +60,7 @@ void OSC_server::error_handler(int num, const char *msg, const char *path) {
 }
 
 int OSC_server::default_handler(const char *path, const char *types, lo_arg **argv,
-                                int argc, lo_message data, void *user_data) {
+                                int argc, void *data, void *user_data) {
   OSC_server *server = (OSC_server*)user_data;
   if (!server) return -1;
 

brain/src/spiralcore/OSC_server.h

@@ -32,7 +32,7 @@ public:
   bool ok() { return m_server!=NULL; }
   
 private:
-  static int default_handler(const char *path, const char *types, lo_arg **argv, int argc, lo_message data, void *user_data);
+  static int default_handler(const char *path, const char *types, lo_arg **argv, int argc, void *data, void *user_data);
   static void error_handler(int num, const char *m, const char *path);
 
   lo_server_thread m_server;

brain/src/spiralcore/audio.cpp

@@ -51,12 +51,12 @@ void audio_device::connect(const string &output_device_name, const string &clien
   m_client.attach(output_device_name,clientname,opt);
 }
 
-void audio_device::save_sample(const string &filename, const sample s) {
+void audio_device::save_sample(const string &filename, unsigned int channels, const sample s) {
     SF_INFO sfinfo;
     sfinfo.format=SF_FORMAT_WAV | SF_FORMAT_FLOAT;
     sfinfo.frames=s.get_length();
     sfinfo.samplerate=m_samplerate;
-    sfinfo.channels=1;
+    sfinfo.channels=channels;
     sfinfo.sections=1;
     sfinfo.seekable=0;
     SNDFILE* f=sf_open(filename.c_str(), SFM_WRITE, &sfinfo);
@@ -69,8 +69,7 @@ void audio_device::save_sample(const string &filename, const sample s) {
 void audio_device::start_recording(std::string filename) {
     m_record_filename=filename;
     m_recording=true;
-    m_record_buffer_left.clear();
-    m_record_buffer_right.clear();
+    m_record_buffer.clear();
     m_record_counter=0;
 }
 
@@ -81,13 +80,19 @@ void audio_device::stop_recording() {
 
 void audio_device::maybe_record() {
     if (m_recording) {
-        m_record_buffer_left.add(left_out);
-        m_record_buffer_right.add(right_out);
-        m_record_counter++;
-        if (m_record_counter%10==0) {
-            save_sample(m_record_filename+"-left.wav", m_record_buffer_left);
-            save_sample(m_record_filename+"-right.wav", m_record_buffer_right);
-        }
+      sample news(left_out.get_length()*2);
+      for (unsigned int i=0; i<left_out.get_length(); i++) {
+        news[i*2]=left_out[i];
+        news[i*2+1]=right_out[i];
+      }
+      
+      m_record_buffer.add(news);
+      m_record_counter++;
+
+      // save "every now and again"
+      if (m_record_counter%10==0) {
+        save_sample(m_record_filename+".wav",2,m_record_buffer);
+      }
     }
 }
 

brain/src/spiralcore/audio.h

@@ -42,13 +42,12 @@ namespace spiralcore {
     
     portaudio_client m_client;
 
-    void save_sample(const std::string &filename, const sample s);
+    void save_sample(const std::string &filename, unsigned int channels, const sample s);
 
   private:
     bool m_recording;
     std::string m_record_filename;
-    sample m_record_buffer_left;
-    sample m_record_buffer_right;
+    sample m_record_buffer;
     u32 m_record_counter;
     u32 m_samplerate;
   };