initial

7 files changed, 985 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..040b4e2
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,139 @@
+project("csound_jstick")
+
+cmake_minimum_required(VERSION 3.8)
+
+set(APIVERSION "6.0")
+
+# Release or Debug
+set(CMAKE_BUILD_TYPE "Release")
+
+# force make to print the command lines
+set(CMAKE_VERBOSE_MAKEFILE on)
+
+# path to Csound cmake module
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
+
+# set compilation flags
+set(CMAKE_CXX_FLAGS  ${CMAKE_CXX_FLAGS}  "-std=c++11 -fpermissive -fPIC -w -DUSE_DOUBLE -DB64BIT")
+
+# options
+option(USE_LIB64 "Set to on to set installation dir for libs to lib64" OFF)
+option(USE_DOUBLE "Use doubles for audio calculations" ON)
+option(CPP11 "c++11" ON)
+
+set(BUILDING_CSOUND_PLUGINS ON)
+
+# ----------------------------------------------
+
+include(FindCsound)
+
+include(CheckCCompilerFlag)
+include(CheckCXXCompilerFlag)
+
+# -----------------------------------------------
+
+function(addflag flag flagname)
+  check_c_compiler_flag(${flag} ${flagname})
+  if (${flagname})
+    # message(STATUS "Setting C flag ${flag}")    
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE)
+  endif()
+  check_cxx_compiler_flag(${flag} CXX_${flagname})
+  if (CXX_${flagname})
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}" PARENT_SCOPE)
+  endif()
+endfunction(addflag)
+
+
+# set optimization flags
+if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG)
+  add_definitions(-fvisibility=hidden)
+  if(NATIVE)
+	add_definitions(-march=native)
+  endif()
+  
+  include(CheckCCompilerFlag)
+  include(CheckCXXCompilerFlag)
+
+  addflag(-msse HAS_SSE)
+  addflag(-msse2 HAS_SSE2)
+  addflag(-mfgpath=sse HAS_FPMATH_SSE)
+  
+endif()
+
+if(MINGW)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mstackrealign")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mstackrealign")
+endif()
+
+addflag(-ftree-vectorize HAS_TREE_VECTORIZE)
+addflag(-ffast-math HAS_FAST_MATH)
+addflag(-fomit-frame-pointer HAS_OMIT_FRAME_POINTER)
+
+
+# -------------------------------------------------------------------
+
+set(CS_FRAMEWORK_DEST "~/Library/Frameworks")
+
+
+if(USE_LIB64)
+  set(LIBRARY_INSTALL_DIR "lib64")
+  add_definitions("-DLIB64")
+else()
+  set(LIBRARY_INSTALL_DIR "lib")
+endif()
+
+message(STATUS "LIBRARY INSTALL DIR: ${LIBRARY_INSTALL_DIR}")
+
+# -------------------------------------------------------------------
+
+
+if(USE_DOUBLE)
+  message(STATUS ">>> using doubles")
+  
+  if(APPLE)
+    set(CSOUNDLIB "CsoundLib64")
+    set(PLUGIN_INSTALL_DIR "${CS_FRAMEWORK_DEST}/${CSOUNDLIB}.framework/Versions/${APIVERSION}/Resources/Opcodes64")
+  else()
+    set(CSOUNDLIB "csound64")
+    set(PLUGIN_INSTALL_DIR "${LIBRARY_INSTALL_DIR}/csound/plugins64-${APIVERSION}")
+  endif()
+else()
+  message(STATUS ">>> not using doubles")
+  if(APPLE)
+    set(CSOUNDLIB "CsoundLib")
+    set(PLUGIN_INSTALL_DIR "${CS_FRAMEWORK_DEST}/${CSOUNDLIB}.framework/Versions/${APIVERSION}/Resources/Opcodes")
+  else()
+    set(CSOUNDLIB "csound")
+    set(PLUGIN_INSTALL_DIR "${LIBRARY_INSTALL_DIR}/csound/plugins-${APIVERSION}")
+  endif()
+endif()
+
+
+# -------------------------------------------------------------------
+  
+# Csound opcode build
+find_package(Csound)
+
+
+set(BUILD_PLUGINS_DIR ${CMAKE_CURRENT_BINARY_DIR})
+
+if(NOT CSOUND_FOUND)
+  message(FATAL_ERROR "Csound installation not found")
+endif()
+
+
+set(CPPFILES src/opcodes.cpp src/joystick.cpp)
+
+
+add_library(jstick SHARED ${CPPFILES})
+include_directories(${CSOUND_INCLUDE_DIRS})
+include_directories(include)
+
+
+set_target_properties(jstick PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY ${BUILD_PLUGINS_DIR}
+  LIBRARY_OUTPUT_DIRECTORY ${BUILD_PLUGINS_DIR})
+ 
+install(TARGETS jstick LIBRARY DESTINATION "${PLUGIN_INSTALL_DIR}" )
+
diff --git a/LICENCE b/LICENCE
new file mode 100644
index 0000000..de9fd5a
--- /dev/null
+++ b/LICENCE
@@ -0,0 +1,502 @@
+		  GNU LESSER GENERAL PUBLIC LICENSE
+		       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+     51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
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+
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+ the version number 2.1.]
+
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+ordinary General Public License).
+
+  To apply these terms, attach the following notices to the library.  It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!
diff --git a/cmake/Modules/FindCsound.cmake b/cmake/Modules/FindCsound.cmake
new file mode 100644
index 0000000..e55b269
--- /dev/null
+++ b/cmake/Modules/FindCsound.cmake
@@ -0,0 +1,29 @@
+# Try to find the Csound library.
+# Once done this will define:
+#  CSOUND_FOUND - System has the Csound library
+#  CSOUND_INCLUDE_DIRS - The Csound include directories.
+#  CSOUND_LIBRARIES - The libraries needed to use the Csound library.
+
+if(APPLE)
+find_path(CSOUND_INCLUDE_DIR csound.h HINTS /Library/Frameworks/CsoundLib64.framework/Headers
+"$ENV{HOME}/Library/Frameworks/CsoundLib64.framework/Headers")
+else()
+find_path(CSOUND_INCLUDE_DIR csound.h PATH_SUFFIXES csound)
+endif()
+
+if(APPLE)
+find_library(CSOUND_LIBRARY NAMES CsoundLib64 HINTS /Library/Frameworks/CsoundLib64.framework/
+"$ENV{HOME}/Library/Frameworks/CsoundLib64.framework")
+else()
+find_library(CSOUND_LIBRARY NAMES csound64 csound)
+endif()
+
+include(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set CSOUND_FOUND to TRUE
+# if all listed variables are TRUE
+find_package_handle_standard_args(CSOUND
+                                  CSOUND_LIBRARY CSOUND_INCLUDE_DIR)
+mark_as_advanced(CSOUND_INCLUDE_DIR CSOUND_LIBRARY)
+
+set(CSOUND_INCLUDE_DIRS ${CSOUND_INCLUDE_DIR})
+set(CSOUND_LIBRARIES ${CSOUND_LIBRARY} )
diff --git a/examples/test.csd b/examples/test.csd
new file mode 100644
index 0000000..a78fb8d
--- /dev/null
+++ b/examples/test.csd
@@ -0,0 +1,31 @@
+<CsoundSynthesizer>
+<CsOptions>
+-odac
+</CsOptions>
+; ==============================================
+<CsInstruments>
+
+sr	=	48000
+ksmps	=	1024
+nchnls	=	2
+0dbfs	=	1
+
+
+instr 1	
+	kfreq init 440
+	kaxis[], kbuttons[] jstick 0
+	printk2 kaxis[2]
+	kfreq = kaxis[3]
+	a1 oscil 1, kfreq
+	outs a1, a1
+endin
+
+</CsInstruments>
+; ==============================================
+<CsScore>
+i1 0 100
+
+
+</CsScore>
+</CsoundSynthesizer>
+
diff --git a/include/joystick.hpp b/include/joystick.hpp
new file mode 100644
index 0000000..1c80b0d
--- /dev/null
+++ b/include/joystick.hpp
@@ -0,0 +1,128 @@
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright Drew Noakes 2013-2016
+
+#ifndef __JOYSTICK_HH__
+#define __JOYSTICK_HH__
+
+#include <string>
+#include <iostream>
+
+#define JS_EVENT_BUTTON 0x01 // button pressed/released
+#define JS_EVENT_AXIS   0x02 // joystick moved
+#define JS_EVENT_INIT   0x80 // initial state of device
+
+/**
+ * Encapsulates all data relevant to a sampled joystick event.
+ */
+class JoystickEvent
+{
+public:
+  /** Minimum value of axes range */
+  static const short MIN_AXES_VALUE = -32768;
+
+  /** Maximum value of axes range */
+  static const short MAX_AXES_VALUE = 32767;
+  
+  /**
+   * The timestamp of the event, in milliseconds.
+   */
+  unsigned int time;
+  
+  /**
+   * The value associated with this joystick event.
+   * For buttons this will be either 1 (down) or 0 (up).
+   * For axes, this will range between MIN_AXES_VALUE and MAX_AXES_VALUE.
+   */
+  short value;
+  
+  /**
+   * The event type.
+   */
+  unsigned char type;
+  
+  /**
+   * The axis/button number.
+   */
+  unsigned char number;
+
+  /**
+   * Returns true if this event is the result of a button press.
+   */
+  bool isButton()
+  {
+    return (type & JS_EVENT_BUTTON) != 0;
+  }
+
+  /**
+   * Returns true if this event is the result of an axis movement.
+   */
+  bool isAxis()
+  {
+    return (type & JS_EVENT_AXIS) != 0;
+  }
+
+  /**
+   * Returns true if this event is part of the initial state obtained when
+   * the joystick is first connected to.
+   */
+  bool isInitialState()
+  {
+    return (type & JS_EVENT_INIT) != 0;
+  }
+
+  /**
+   * The ostream inserter needs to be a friend so it can access the
+   * internal data structures.
+   */
+  friend std::ostream& operator<<(std::ostream& os, const JoystickEvent& e);
+};
+
+/**
+ * Stream insertion function so you can do this:
+ *    cout << event << endl;
+ */
+std::ostream& operator<<(std::ostream& os, const JoystickEvent& e);
+
+/**
+ * Represents a joystick device. Allows data to be sampled from it.
+ */
+class Joystick
+{
+private:
+  void openPath(std::string devicePath, bool blocking=false);
+  
+  int _fd;
+  
+public:
+  ~Joystick();
+
+
+  /**
+   * Initialises an instance for the joystick device specified.
+   */
+  void init(int joystickNumber);
+
+  /**
+   * Returns true if the joystick was found and may be used, otherwise false.
+   */
+  bool isFound();
+  
+  /**
+   * Attempts to populate the provided JoystickEvent instance with data
+   * from the joystick. Returns true if data is available, otherwise false.
+   */
+  bool sample(JoystickEvent* event);
+};
+
+#endif
diff --git a/src/joystick.cpp b/src/joystick.cpp
new file mode 100644
index 0000000..1b40650
--- /dev/null
+++ b/src/joystick.cpp
@@ -0,0 +1,69 @@
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright Drew Noakes 2013-2016
+
+#include "joystick.hpp"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <iostream>
+#include <string>
+#include <sstream>
+#include "unistd.h"
+
+
+
+void Joystick::init(int joystickNumber) {
+	std::stringstream sstm;
+	sstm << "/dev/input/js" << joystickNumber;
+	openPath(sstm.str(), false);
+}
+
+void Joystick::openPath(std::string devicePath, bool blocking)
+{
+  // Open the device using either blocking or non-blocking
+  _fd = open(devicePath.c_str(), blocking ? O_RDONLY : O_RDONLY | O_NONBLOCK);
+}
+
+bool Joystick::sample(JoystickEvent* event)
+{
+  int bytes = read(_fd, event, sizeof(*event)); 
+
+  if (bytes == -1)
+    return false;
+
+  // NOTE if this condition is not met, we're probably out of sync and this
+  // Joystick instance is likely unusable
+  return bytes == sizeof(*event);
+}
+
+bool Joystick::isFound()
+{
+  return _fd >= 0;
+}
+
+Joystick::~Joystick()
+{
+  close(_fd);
+}
+
+std::ostream& operator<<(std::ostream& os, const JoystickEvent& e)
+{
+  os << "type=" << static_cast<int>(e.type)
+     << " number=" << static_cast<int>(e.number)
+     << " value=" << static_cast<int>(e.value);
+  return os;
+}
+
+
diff --git a/src/opcodes.cpp b/src/opcodes.cpp
new file mode 100644
index 0000000..d3e3c9b
--- /dev/null
+++ b/src/opcodes.cpp
@@ -0,0 +1,87 @@
+/*
+    opcodes.cpp
+    Copyright (C) 2021 Richard Knight
+
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 3 of the License, or (at your option) any later version.
+
+    This program 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program; if not, write to the Free Software Foundation,
+    Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ 
+ */
+
+#include <plugin.h>
+#include "linux/joystick.h"
+#include "joystick.hpp"
+
+struct jstick : csnd::Plugin<2, 1> {
+    static constexpr char const *otypes = "k[]k[]";
+    static constexpr char const *itypes = "i";
+	Joystick js;
+	MYFLT* saxis;
+	MYFLT* sbuttons;
+
+    int init() {
+		csound->plugin_deinit(this);
+		csnd::Vector<MYFLT> &axis = outargs.vector_data<MYFLT>(0);
+		csnd::Vector<MYFLT> &buttons = outargs.vector_data<MYFLT>(1);
+
+		saxis = (MYFLT*) csound->calloc(4*sizeof(MYFLT));
+		sbuttons = (MYFLT*) csound->calloc(12*sizeof(MYFLT));
+
+		axis.init(csound, 4);
+		buttons.init(csound, 12);
+		js.init((int)inargs[0]);
+		if (!js.isFound()) {
+			return csound->init_error("cannot open joypad");
+		}
+        return OK;
+    }
+
+
+	int deinit() {
+		delete js;
+		return OK;
+	}
+    
+    int kperf() {
+		csnd::Vector<MYFLT> &axis = outargs.vector_data<MYFLT>(0);
+		csnd::Vector<MYFLT> &buttons = outargs.vector_data<MYFLT>(1);
+		axis.init(csound, 4);
+		buttons.init(csound, 12);
+		JoystickEvent event;
+		bool isAxis;
+		int type;
+		MYFLT val;
+		while (js.sample(&event)) {
+			isAxis = event.isAxis();
+			type = event.number;
+			val = event.value;
+		}
+		if (isAxis) {
+			saxis[type] = FL(((32767.0)+val)/65534);
+		} else {
+			sbuttons[type] = val;
+		}
+		memcpy(axis.data_array(), saxis, sizeof(MYFLT)*4);
+		memcpy(buttons.data_array(), sbuttons, sizeof(MYFLT)*12);
+
+        return OK;
+    }
+};
+
+
+#include <modload.h>
+
+void csnd::on_load(csnd::Csound *csound) {
+    csnd::plugin<jstick>(csound, "jstick", csnd::thread::ik);
+}