Centralise jackclient code for reuse among the jack client modules. Implement most of the jackaudio output module (probably broken atm.).

1 files changed, 206 insertions, 0 deletions

diff --git a/drumgizmo/output/jackaudio/jackaudio.cc b/drumgizmo/output/jackaudio/jackaudio.cc
new file mode 100644
index 0000000..9410915
--- /dev/null
+++ b/drumgizmo/output/jackaudio/jackaudio.cc
@@ -0,0 +1,206 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            jackaudio.cc
+ *
+ *  Sat Apr 30 21:11:54 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo 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.
+ *
+ *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include <stdlib.h>
+
+#include <string>
+#include <audiotypes.h>
+
+#define NOTE_ON 0x90
+
+#include "../../jackclient.h"
+#include <stdio.h>
+
+class JackAudio : public JackProcess {
+public:
+  JackAudio();
+  ~JackAudio();
+  bool init(int channels, char *cnames[]);
+
+  void setParm(std::string parm, std::string value);
+
+  bool start();
+  void stop();
+
+  void pre(size_t size);
+  void run(int channel, sample_t* data, size_t size);
+  void post(size_t size);
+
+  void jack_process(jack_nframes_t nframes);
+
+private:
+  JackClient *jackclient;
+  jack_port_t *output_port[64];
+  size_t nchannels;
+  sample_t **channels;
+};
+
+JackAudio::JackAudio()
+{
+}
+
+JackAudio::~JackAudio()
+{
+}
+
+bool JackAudio::init(int nchannels, char *cnames[])
+{
+  this->nchannels = nchannels;
+  channels = (sample_t**)malloc(nchannels * sizeof(sample_t*));
+
+  for(int i = 0; i < nchannels; i++) {
+    char buf[32];
+    sprintf(buf, "%d", i + 1);
+    std::string name;
+    name += buf;
+    name += "-";
+    name += cnames[i];
+    output_port[i] = jack_port_register(jackclient->jack_client,
+                                        name.c_str(),
+                                        JACK_DEFAULT_AUDIO_TYPE,
+                                        JackPortIsOutput, 0);
+    channels[i] = (sample_t*)malloc(2048 * sizeof(sample_t));
+  }
+  return true;
+}
+
+void JackAudio::setParm(std::string parm, std::string value)
+{
+  if(parm == "jack_client") {
+    sscanf(value.c_str(), "%p", &jackclient);
+    if(jackclient) jackclient->addJackProcess(this);
+  }
+}
+
+bool JackAudio::start()
+{
+  return true;
+}
+
+void JackAudio::stop()
+{
+}
+
+void JackAudio::pre(size_t size)
+{
+}
+
+void JackAudio::run(int channel, sample_t* data, size_t size)
+{
+  // Copy engine data to ringbuffer.
+  for(int i = 0; i < size; i++) {
+    channels[channel][i] = data[i];
+  }
+}
+
+void JackAudio::post(size_t size)
+{
+}
+
+void JackAudio::jack_process(jack_nframes_t nframes)
+{
+  printf("o"); fflush(stdout);
+  for(int c = 0; c < nchannels; c++) {
+    jack_default_audio_sample_t *out =
+      (jack_default_audio_sample_t *) jack_port_get_buffer(output_port[c],
+                                                           nframes);
+    for(int i = 0; i < nframes; i++) {
+      out[i] = channels[c][i];
+    }
+  }
+}
+
+extern "C" {
+  void *create()
+  {
+    return new JackAudio();
+  }
+  
+  void destroy(void *h)
+  {
+    JackAudio *jack = (JackAudio*)h;
+    delete jack;
+  }
+
+  bool init(void *h, int cs, char *cnames[])
+  {
+    JackAudio *jack = (JackAudio*)h;
+    return jack->init(cs, cnames);
+  }
+
+  void setparm(void *h, const char *parm, const char *value)
+  {
+    JackAudio *jack = (JackAudio*)h;
+    jack->setParm(parm, value);
+  }
+
+  bool start(void *h)
+  {
+    JackAudio *jack = (JackAudio*)h;
+    return jack->start();
+  }
+
+  void stop(void *h)
+  {
+    JackAudio *jack = (JackAudio*)h;
+    jack->stop();
+  }
+
+  void pre(void *h, size_t s)
+  {
+    JackAudio *jack = (JackAudio*)h;
+    jack->pre(s);
+  }
+
+  void run(void *h, int ch, sample_t *data, size_t size)
+  {
+    JackAudio *jack = (JackAudio*)h;
+    jack->run(ch, data, size);
+  }
+
+  void post(void *h, size_t s)
+  {
+    JackAudio *jack = (JackAudio*)h;
+    jack->post(s);
+  }
+}
+
+#ifdef TEST_AUDIOINPUTENGINEJACKAUDIO
+//Additional dependency files
+//deps:
+//Required cflags (autoconf vars may be used)
+//cflags:
+//Required link options (autoconf vars may be used)
+//libs:
+#include "test.h"
+
+TEST_BEGIN;
+
+// TODO: Put some testcode here (see test.h for usable macros).
+
+TEST_END;
+
+#endif/*TEST_AUDIOINPUTENGINEJACKAUDIO*/