New input/output plugin architecture. New LV2 plugin.

1 files changed, 236 insertions, 0 deletions

diff --git a/drumgizmo/audioinputenginedl.cc b/drumgizmo/audioinputenginedl.cc
new file mode 100644
index 0000000..3b2a483
--- /dev/null
+++ b/drumgizmo/audioinputenginedl.cc
@@ -0,0 +1,236 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            audioinputenginedl.cc
+ *
+ *  Wed Jul 13 14:39:54 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 "audioinputenginedl.h"
+
+#include <stdio.h>
+
+#include <dlfcn.h>
+
+#include <config.h>
+#include <string.h>
+#include <stdlib.h>
+
+AudioInputEngineDL::AudioInputEngineDL(std::string name)
+{
+  std::string plugin = INPUT_PLUGIN_DIR"/lib" + name + ".so";
+  void *lib = dlopen(plugin.c_str(), RTLD_LAZY);
+  if(!lib) {
+    printf("Cannot load device: %s\n", dlerror());
+    return;
+  }
+
+  i_create = (input_create_func_t) dlsym(lib, "create");
+  const char* dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol create: %s\n", dlsym_error);
+    return;
+  }
+
+  i_destroy = (input_destroy_func_t) dlsym(lib, "destroy");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  i_init = (input_init_func_t) dlsym(lib, "init");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  i_setparm = (input_setparm_func_t) dlsym(lib, "setparm");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  i_start = (input_start_func_t) dlsym(lib, "start");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  i_stop = (input_stop_func_t) dlsym(lib, "stop");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  i_pre = (input_pre_func_t) dlsym(lib, "pre");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  i_run = (input_run_func_t) dlsym(lib, "run");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  i_post = (input_post_func_t) dlsym(lib, "post");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return;
+  }
+
+  ptr = i_create();
+}
+
+AudioInputEngineDL::~AudioInputEngineDL()
+{
+  i_destroy(ptr);
+}
+
+bool AudioInputEngineDL::init(Instruments &instruments)
+{
+  char **n = (char**)malloc(sizeof(char*)*instruments.size());
+  for(size_t i = 0; i < instruments.size(); i++) {
+    n[i] = strdup(instruments[i].name().c_str());
+  }
+
+  bool ret = i_init(ptr, instruments.size(), n);
+
+  for(size_t i = 0; i < instruments.size(); i++) {
+    free(n[i]);
+  }
+  free(n);
+
+  return ret;
+}
+
+void AudioInputEngineDL::setParm(std::string parm, std::string value)
+{
+  i_setparm(ptr, parm.c_str(), value.c_str());
+}
+
+bool AudioInputEngineDL::start()
+{
+  return i_start(ptr);
+}
+
+void AudioInputEngineDL::stop()
+{
+  return i_stop(ptr);
+}
+
+void AudioInputEngineDL::pre()
+{
+  return i_pre(ptr);
+}
+
+event_t *AudioInputEngineDL::run(size_t pos, size_t len, size_t *nevents)
+{
+  return i_run(ptr, pos, len, nevents);
+}
+
+void AudioInputEngineDL::post()
+{
+  return i_post(ptr);
+}
+
+//#include "audioinputenginedummy.h"
+//#include "audioinputenginejackmidi.h"
+//#include "audioinputenginemidifile.h"
+
+/*
+
+typedef Device* (*create_func_t)(void);
+typedef void (*destroy_func_t)(Device*);
+
+struct device_t {
+  Device* dev;
+  destroy_func_t destroyer;
+  void* lib;
+};
+
+int load_shared_device(device_t &dev, std::string devlib,
+                             std::string devfile, ConfMap devconfmap) {
+  // load library
+  dev.lib = dlopen(devlib.c_str(), RTLD_LAZY);
+  if(!dev.lib ) {
+    printf("Cannot load device: %s\n", dlerror());
+    return -1;
+  }
+
+  create_func_t create_device = (create_func_t) dlsym(dev.lib, "create");
+  const char* dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol create: %s\n", dlsym_error);
+    return -1;
+  }
+
+  dev.destroyer = (destroy_func_t) dlsym(dev.lib, "destroy");
+  dlsym_error = dlerror();
+  if(dlsym_error) {
+    printf("Cannot load symbol destroy: %s\n", dlsym_error);
+    return -1;
+  }
+
+  dev.dev = create_device();
+
+  // initialize device 
+  DevData devdata = dev.dev->init(devfile, devconfmap);
+  if(devdata.retval != DevData::VALUE_SUCCESS) {
+    printf("Error while initializing device: %s\n",  devdata.msg.c_str());
+    return -1;
+  }
+
+  return 0;
+}
+
+void unload_shared_device(device_t &dev) {
+  
+  dev.destroyer(dev.dev);
+  dlclose(dev.lib);
+}
+*/
+
+#ifdef TEST_AUDIOINPUTENGINEDL
+//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_AUDIOINPUTENGINEDL*/