From 981cd50a83e67f5471ee1e1ad0c0575506f14da0 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Mon, 21 Jul 2008 12:11:02 +0000
Subject: Wee multivoices and multiple wavs... all triggered by the midi test
 framework.

---
 src/cymbal.wav    | Bin 0 -> 147512 bytes
 src/drumgizmo.cc  |  13 ++++++++-----
 src/event.cc      |  10 ++++++----
 src/event.h       |   7 +++++--
 src/jackclient.cc |  52 +++++++++++++++++++++++++++++++++-------------------
 src/jackclient.h  |   2 +-
 src/snare.wav     | Bin 0 -> 49220 bytes
 7 files changed, 53 insertions(+), 31 deletions(-)
 create mode 100644 src/cymbal.wav
 create mode 100644 src/snare.wav

diff --git a/src/cymbal.wav b/src/cymbal.wav
new file mode 100644
index 0000000..0ce8b13
Binary files /dev/null and b/src/cymbal.wav differ
diff --git a/src/drumgizmo.cc b/src/drumgizmo.cc
index 737a197..f423bb0 100644
--- a/src/drumgizmo.cc
+++ b/src/drumgizmo.cc
@@ -31,20 +31,23 @@
 
 static jack_port_t *test_midi_port = NULL;
 static size_t timer = 0;
+static size_t next = 44100;
 
 int process(jack_nframes_t nframes, void *arg)
 {
   //  if(jack_port_connected_to(test_midi_port, "DrumGizmo:midi_in")) {
   void* port_buf = jack_port_get_buffer(test_midi_port, nframes);
 
-  if(timer > 44100) { // activate every second (44100 samples)
-    printf("ding\n");
+  if(timer > next) { // activate every second (44100 samples)
+    //    printf("ding\n");
 
-    jack_nframes_t time = 1;
-    size_t size = 3;
-    jack_midi_data_t all_notes_off[] = { 0xB0, 123, 0 };
+    jack_nframes_t time = (jack_nframes_t)(((float)rand() / (float)RAND_MAX) * nframes);
+    size_t size = 1;
+    jack_midi_data_t all_notes_off[] = { rand() % 2 };
     jack_midi_event_write(port_buf, time, all_notes_off, size);
+
     timer = 0;
+    next = (size_t)(((float)rand() / (float)RAND_MAX) * 0.3 * 44100);
   }
 
   timer += nframes;
diff --git a/src/event.cc b/src/event.cc
index 804d42f..c589807 100644
--- a/src/event.cc
+++ b/src/event.cc
@@ -26,11 +26,12 @@
  */
 #include "event.h"
 
-Event::Event(Sample *sample, size_t onset)
+Event::Event(jack_port_t *port, Sample *sample, size_t time, size_t duration)
 {
+  this->port = port;
   this->sample = sample;
-  this->onset = onset;
-  duration = 0;
+  this->time = time;
+  this->duration = duration;
 }
 
 Event::~Event()
@@ -39,5 +40,6 @@ Event::~Event()
 
 bool Event::operator<(const Event& event) const
 {
-  return onset + duration < event.onset + event.duration;
+  if(time == event.time) return this < &event;
+  return time < event.time;
 }
diff --git a/src/event.h b/src/event.h
index 4f277a7..c32297e 100644
--- a/src/event.h
+++ b/src/event.h
@@ -27,19 +27,22 @@
 #ifndef __DRUMGIZMO_EVENT_H__
 #define __DRUMGIZMO_EVENT_H__
 
+#include <jack/jack.h>
+
 #include <set>
 #include "sample.h"
 
 class Event {
 public:
-  Event(Sample *sample, size_t onset);
+  Event(jack_port_t *port, Sample *sample, size_t time, size_t duration = 0);
   ~Event();
 
   bool operator<(const Event& event) const;
 
+  jack_port_t *port;
   Sample *sample;
   size_t duration;
-  size_t onset;
+  size_t time;
 };
 
 typedef std::set< Event > Events;
diff --git a/src/jackclient.cc b/src/jackclient.cc
index 42a85c2..0f3e254 100644
--- a/src/jackclient.cc
+++ b/src/jackclient.cc
@@ -96,7 +96,8 @@ JackClient::JackClient(size_t num_inputs, size_t num_outputs)
 	//jack_set_xrun_callback(jack_client, _wrap_jack_xrun, this);
 
 
-  sample = new Sample("/home/deva/snare.wav");
+  sample[0] = new Sample("cymbal.wav");
+  sample[1] = new Sample("snare.wav");
 }
 
 JackClient::~JackClient()
@@ -130,10 +131,15 @@ int JackClient::process(jack_nframes_t nframes)
 		printf("]\n");
     */
     
-    // Create trigger event
-    Event event(sample, midi_event.time);
-    events.insert(event);
+    Ports::iterator pi = output_ports.begin();
+    while(pi != output_ports.end()) {
+
+      // Create trigger event
+      Event event(*pi, sample[midi_event.buffer[0]], midi_event.time);
+      events.insert(event);
 
+      pi++;
+    }
 	}
 
   jack_midi_clear_buffer(midibuffer);
@@ -152,30 +158,38 @@ int JackClient::process(jack_nframes_t nframes)
     pi++;
   }
 
+  Events nextevents;
+
+  //  printf("Events %d\n", events.size());
+
   // Handle events
   Events::iterator ei = events.begin();
   while(ei != events.end()) {
 
-    printf("Event\n");
-
-    Ports::iterator pi = output_ports.begin();
-    while(pi != output_ports.end()) {
-
-      jack_default_audio_sample_t *buffer;
-      buffer = (jack_default_audio_sample_t *)jack_port_get_buffer(*pi, nframes);
+    Event event = *ei;
 
-      for(size_t j = 0; j < nframes; j++) {
-        buffer[j] = sample->data[j];//(float)rand() / (float)RAND_MAX; // Set output
-      }
-
-      pi++;
+    jack_default_audio_sample_t *buffer;
+    buffer = (jack_default_audio_sample_t *)jack_port_get_buffer(event.port, nframes);
+    
+    size_t size = (event.sample->size - event.duration) < nframes ?
+      (event.sample->size - event.duration) - event.time : nframes - event.time;
+    
+    for(size_t j = event.time; j < event.time + size; j++) {
+      //memcpy(buffer + event.time, event.sample->data + event.duration, size);
+      buffer[j] += event.sample->data[event.duration + j];
     }
-
+    
+    if(event.duration + size < event.sample->size) {
+      Event e(event.port, event.sample, 0, event.duration + size);
+      nextevents.insert(e);
+    }
+    
     ei++;
   }
 
-  // Remove all events
-  events.clear();
+  // Remove all dead events
+  events = nextevents;
+
   /*
 	for(size_t i = 0; i < output_ports.size(); i++) {
 		jack_default_audio_sample_t *buffer;
diff --git a/src/jackclient.h b/src/jackclient.h
index cf32eb0..f1b6b72 100644
--- a/src/jackclient.h
+++ b/src/jackclient.h
@@ -63,7 +63,7 @@ private:
   Ports output_ports;
   jack_port_t *midi_port;
 
-  Sample *sample;
+  Sample *sample[2];
   Events events;
 };
 
diff --git a/src/snare.wav b/src/snare.wav
new file mode 100644
index 0000000..77a6123
Binary files /dev/null and b/src/snare.wav differ
-- 
cgit v1.2.3