New input/output plugin architecture. New LV2 plugin.

1 files changed, 176 insertions, 0 deletions

diff --git a/drumgizmo/audiooutputenginedl.cc b/drumgizmo/audiooutputenginedl.cc
new file mode 100644
index 0000000..411c14b
--- /dev/null
+++ b/drumgizmo/audiooutputenginedl.cc
@@ -0,0 +1,176 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            audiooutputenginedl.cc
+ *
+ *  Wed Jul 13 14:40:01 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 "audiooutputenginedl.h"
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <config.h>
+#include <string.h>
+
+AudioOutputEngineDL::AudioOutputEngineDL(std::string name)
+{
+  std::string plugin = OUTPUT_PLUGIN_DIR"/lib" + name + ".so";
+  void *lib = dlopen(plugin.c_str(), RTLD_LAZY);
+  if(!lib) {
+    printf("Cannot load device: %s\n", dlerror());
+    return;
+  }
+
+  o_create = (output_create_func_t) dlsym(lib, "create");
+  const char* dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol create: %s\n", dlsym_error);
+    return;
+  }
+
+  o_destroy = (output_destroy_func_t) dlsym(lib, "destroy");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  o_init = (output_init_func_t) dlsym(lib, "init");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  o_setparm = (output_setparm_func_t) dlsym(lib, "setparm");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  o_start = (output_start_func_t) dlsym(lib, "start");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  o_stop = (output_stop_func_t) dlsym(lib, "stop");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  o_pre = (output_pre_func_t) dlsym(lib, "pre");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  o_run = (output_run_func_t) dlsym(lib, "run");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  o_post = (output_post_func_t) dlsym(lib, "post");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  ptr = o_create();
+}
+
+AudioOutputEngineDL::~AudioOutputEngineDL()
+{
+  o_destroy(ptr);
+}
+
+bool AudioOutputEngineDL::init(Channels channels)
+{
+  char **n = (char**)malloc(sizeof(char*)*channels.size());
+  for(size_t i = 0; i < channels.size(); i++) {
+    n[i] = strdup(channels[i].name.c_str());
+  }
+
+  bool ret = o_init(ptr, channels.size(), n);
+
+  for(size_t i = 0; i < channels.size(); i++) {
+    free(n[i]);
+  }
+  free(n);
+
+  return ret;
+}
+
+void AudioOutputEngineDL::setParm(std::string parm, std::string value)
+{
+  o_setparm(ptr, parm.c_str(), value.c_str());
+}
+
+bool AudioOutputEngineDL::start()
+{
+  return o_start(ptr);
+}
+
+void AudioOutputEngineDL::stop()
+{
+  return o_stop(ptr);
+}
+
+void AudioOutputEngineDL::pre(size_t size)
+{
+  return o_pre(ptr, size);
+}
+ 
+void AudioOutputEngineDL::run(int ch, sample_t *samples, size_t nsamples)
+{
+  o_run(ptr, ch, samples, nsamples);
+}
+
+void AudioOutputEngineDL::post(size_t size)
+{
+  return o_post(ptr, size);
+}
+
+#ifdef TEST_AUDIOOUTPUTENGINEDL
+//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_AUDIOOUTPUTENGINEDL*/