From a6343737453b34335a7a5494c8ac6b393d15604c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Goran=20Meki=C4=87?= <meka@tilda.center>
Date: Fri, 29 Dec 2017 23:36:55 +0100
Subject: Open midi device in non-blocking mode

---
 drumgizmo/drumgizmoc.cc    |  2 +-
 drumgizmo/enginefactory.cc |  6 +++---
 drumgizmo/enginefactory.h  |  5 +++++
 drumgizmo/input/ossmidi.cc | 45 +++++++++++++++++++++++++++++++++++++++++++--
 drumgizmo/input/ossmidi.h  |  8 +++++---
 5 files changed, 57 insertions(+), 9 deletions(-)

(limited to 'drumgizmo')

diff --git a/drumgizmo/drumgizmoc.cc b/drumgizmo/drumgizmoc.cc
index 8bfe2f4..6a2458b 100644
--- a/drumgizmo/drumgizmoc.cc
+++ b/drumgizmo/drumgizmoc.cc
@@ -103,7 +103,7 @@ static std::string usage(std::string name)
 	output << "  midifile:  file=<midifile>, speed=<tempo> (default 1.0),\n";
 	output << "             track=<miditrack> (default -1, all tracks)\n";
 	output << "             midimap=<midimapfile>, loop=<true|false>\n";
-	output << "  ossmidi:   midimap=<midimapfile>, dev=<device> (default '/dev/dsp')\n";
+	output << "  ossmidi:   midimap=<midimapfile>, dev=<device> (default '/dev/midi')\n";
 	output << "  test:      p=<hit_propability> (default 0.1)\n";
 	output << "             instr=<instrument> (default -1, random instrument)\n";
 	output << "             len=<seconds> (default -1, forever)\n";
diff --git a/drumgizmo/enginefactory.cc b/drumgizmo/enginefactory.cc
index d54c3e2..c93607e 100644
--- a/drumgizmo/enginefactory.cc
+++ b/drumgizmo/enginefactory.cc
@@ -118,10 +118,10 @@ std::unique_ptr<AudioInputEngine> EngineFactory::createInput(const std::string&
 		return std::make_unique<JackMidiInputEngine>(*jack);
 	}
 #endif
-#ifdef HAVE_INPUT_OSS
-	if(name == "oss")
+#ifdef HAVE_INPUT_OSSMIDI
+	if(name == "ossmidi")
 	{
-		return std::make_unique<OssMidiInputEngine>();
+		return std::make_unique<OSSInputEngine>();
 	}
 #endif
 
diff --git a/drumgizmo/enginefactory.h b/drumgizmo/enginefactory.h
index 327c326..0b37c6e 100644
--- a/drumgizmo/enginefactory.h
+++ b/drumgizmo/enginefactory.h
@@ -78,6 +78,11 @@
 #endif
 
 
+#ifdef HAVE_INPUT_OSSMIDI
+#include "input/ossmidi.h"
+#endif
+
+
 //! Factory for various input- and output engines
 class EngineFactory
 {
diff --git a/drumgizmo/input/ossmidi.cc b/drumgizmo/input/ossmidi.cc
index 024415e..56d77f0 100644
--- a/drumgizmo/input/ossmidi.cc
+++ b/drumgizmo/input/ossmidi.cc
@@ -25,31 +25,55 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  */
 #include "ossmidi.h"
+#include <sys/soundcard.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
 #include <iostream>
 
 
 OSSInputEngine::OSSInputEngine()
+	: AudioInputEngineMidi{}
+	, dev{"/dev/midi"}
 {
 }
 
+
 OSSInputEngine::~OSSInputEngine()
 {
 }
 
+
 bool OSSInputEngine::init(const Instruments& instruments)
 {
+	if(!loadMidiMap(midimap_file, instruments))
+	{
+		std::cerr << "[OSSInputEngine] Failed to parse midimap '"
+		          << midimap_file << std::endl;
+		return false;
+	}
+	if ((fd = open(dev.data(), O_RDONLY | O_NONBLOCK, 0)) == -1)
+	{
+		std::cerr << dev.data() << ' ' << std::strerror(errno) << std::endl;
+		return false;
+	}
 	return true;
 }
 
+
 void OSSInputEngine::setParm(const std::string& parm, const std::string& value)
 {
 	if(parm == "dev")
 	{
 		dev = value;
-    std::cout << "dev = " << dev << std::endl;
+	}
+	else if(parm == "midimap")
+	{
+		midimap_file = value;
 	}
 }
 
+
 bool OSSInputEngine::start()
 {
 	return true;
@@ -59,20 +83,37 @@ void OSSInputEngine::stop()
 {
 }
 
+
 void OSSInputEngine::pre()
 {
 }
 
+
 void OSSInputEngine::run(size_t pos, size_t len, std::vector<event_t>& events)
 {
+	int l;
+	unsigned char buf[128];
+	if ((l = read (fd, buf, sizeof (buf))) != -1)
+	{
+		for (int i = 0; i < l; i++)
+		{
+			if (buf[i] & 0x80)	/* Status byte */
+			{
+				std::cout << std::endl;
+			}
+			std::cout << buf[i];
+		}
+		std::cout << std::flush;
+	}
 }
 
+
 void OSSInputEngine::post()
 {
 }
 
+
 bool OSSInputEngine::isFreewheeling() const
 {
 	return false;
 }
-
diff --git a/drumgizmo/input/ossmidi.h b/drumgizmo/input/ossmidi.h
index 41cfb2b..c6abacd 100644
--- a/drumgizmo/input/ossmidi.h
+++ b/drumgizmo/input/ossmidi.h
@@ -25,10 +25,11 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
  */
 #pragma once
-#include <audioinputengine.h>
+#include "audioinputenginemidi.h"
+
 
 class OSSInputEngine
-	: public AudioInputEngine
+	: public AudioInputEngineMidi
 {
 public:
 	OSSInputEngine();
@@ -45,8 +46,9 @@ public:
 	bool isFreewheeling() const override;
 
 private:
-	std::string dev;
 	int fd;
+	std::string dev;
 	std::size_t pos;
 	std::vector<event_t> events;
+	std::string midimap_file;
 };
-- 
cgit v1.2.3