X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fsurfaces%2Ftranzport%2Fio_usb.cc;fp=libs%2Fsurfaces%2Ftranzport%2Fio_usb.cc;h=c4a004a160066735570d1e5dc37c8e4f4dc2a774;hb=e878b365193ad9315e557a8245b767d8a0fe568d;hp=0000000000000000000000000000000000000000;hpb=92c09a6d91fa90bbfaec4d94e2c6e6c11f1e49a3;p=ardour.git

diff --git a/libs/surfaces/tranzport/io_usb.cc b/libs/surfaces/tranzport/io_usb.cc
new file mode 100644
index 0000000000..c4a004a160
--- /dev/null
+++ b/libs/surfaces/tranzport/io_usb.cc
@@ -0,0 +1,232 @@
+/*
+ *   Copyright (C) 2006 Paul Davis 
+ *   Copyright (C) 2007 Michael Taht
+ *
+ *   This program 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.
+ *
+ *   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 General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *  
+ *   */
+
+#include <iostream>
+
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+#include <float.h>
+#include <sys/time.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <tranzport_control_protocol.h>
+
+#if !HAVE_TRANZPORT_KERNEL_DRIVER
+
+using namespace ARDOUR;
+using namespace std;
+using namespace sigc;
+using namespace PBD;
+
+#include "i18n.h"
+
+#include <pbd/abstract_ui.cc>
+
+// I note that these usb specific open, close, probe, read routines are basically 
+// pure boilerplate and could easily be abstracted elsewhere
+
+bool
+TranzportControlProtocol::probe ()
+{
+	struct usb_bus *bus;
+	struct usb_device *dev;
+
+	usb_init();
+	usb_find_busses();
+	usb_find_devices();
+
+	for (bus = usb_busses; bus; bus = bus->next) {
+
+		for(dev = bus->devices; dev; dev = dev->next) {
+			if (dev->descriptor.idVendor == VENDORID && dev->descriptor.idProduct == PRODUCTID) {
+				return true; 
+			}
+		}
+	}
+
+	return false;
+}
+
+int
+TranzportControlProtocol::open ()
+{
+	struct usb_bus *bus;
+	struct usb_device *dev;
+
+	usb_init();
+	usb_find_busses();
+	usb_find_devices();
+
+	for (bus = usb_busses; bus; bus = bus->next) {
+
+		for(dev = bus->devices; dev; dev = dev->next) {
+			if (dev->descriptor.idVendor != VENDORID)
+				continue;
+			if (dev->descriptor.idProduct != PRODUCTID)
+				continue;
+			return open_core (dev);
+		}
+	}
+
+	cerr << _("Tranzport: no device detected") << endmsg;
+	return -1;
+}
+
+int
+TranzportControlProtocol::open_core (struct usb_device* dev)
+{
+	if (!(udev = usb_open (dev))) {
+		cerr << _("Tranzport: cannot open USB transport") << endmsg;
+		return -1;
+	}
+	 
+	if (usb_claim_interface (udev, 0) < 0) {
+		cerr << _("Tranzport: cannot claim USB interface") << endmsg;
+		usb_close (udev);
+		udev = 0;
+		return -1;
+	}
+
+	if (usb_set_configuration (udev, 1) < 0) {
+		cerr << _("Tranzport: cannot configure USB interface") << endmsg;
+	}
+
+	return 0;
+}
+
+int
+TranzportControlProtocol::close ()
+{
+	int ret = 0;
+
+	if (udev == 0) {
+		return 0;
+	}
+
+	if (usb_release_interface (udev, 0) < 0) {
+		cerr << _("Tranzport: cannot release interface") << endmsg;
+		ret = -1;
+	}
+
+	if (usb_close (udev)) {
+		cerr << _("Tranzport: cannot close device") << endmsg;
+		udev = 0;
+		ret = 0;
+	}
+
+	return ret;
+}
+
+int TranzportControlProtocol::read(uint8_t *buf, uint32_t timeout_override) 
+{
+	last_read_error = usb_interrupt_read (udev, READ_ENDPOINT, (char *) buf, 8, timeout_override);
+	switch(last_read_error) {
+	case -ENOENT:
+	case -ENXIO:
+	case -ECONNRESET:
+	case -ESHUTDOWN: 
+	case -ENODEV: 
+		cerr << "Tranzport disconnected, errno: " << last_read_error;
+		set_active(false);
+	case -ETIMEDOUT: // This is normal
+		break;
+	default: 
+#if DEBUG_TRANZPORT
+		cerr << "Got an unknown error on read:" << last_read_error "\n";
+#endif
+		break;
+	}
+
+	return last_read_error;
+} 
+
+	
+int
+TranzportControlProtocol::write_noretry (uint8_t* cmd, uint32_t timeout_override)
+{
+	int val;
+	if(inflight > MAX_TRANZPORT_INFLIGHT) { return (-1); }
+	val = usb_interrupt_write (udev, WRITE_ENDPOINT, (char*) cmd, 8, timeout_override ? timeout_override : timeout);
+
+	if (val < 0 && val !=8) {
+#if DEBUG_TRANZPORT
+		printf("usb_interrupt_write failed: %d\n", val);
+#endif
+		last_write_error = val;
+		switch(last_write_error) {
+		case -ENOENT:
+		case -ENXIO:
+		case -ECONNRESET:
+		case -ESHUTDOWN: 
+		case -ENODEV: 
+			cerr << "Tranzport disconnected, errno: " << last_write_error;
+			set_active(false);
+		case -ETIMEDOUT: // This is normal
+			break;
+		default: 
+#if DEBUG_TRANZPORT
+			cerr << "Got an unknown error on read:" << last_write_error "\n";
+#endif
+			break;
+		}
+		return val;
+	}
+
+	last_write_error = 0;
+	++inflight;
+
+	return 0;
+
+}	
+
+int
+TranzportControlProtocol::write (uint8_t* cmd, uint32_t timeout_override)
+{
+#if MAX_RETRY > 1
+	int val;
+	int retry = 0;
+	if(inflight > MAX_TRANZPORT_INFLIGHT) { return (-1); }
+	
+	while((val = usb_interrupt_write (udev, WRITE_ENDPOINT, (char*) cmd, 8, timeout_override ? timeout_override : timeout))!=8 && retry++ < MAX_RETRY) {
+		printf("usb_interrupt_write failed, retrying: %d\n", val);
+	}
+
+	if (retry == MAX_RETRY) {
+		printf("Too many retries on a tranzport write, aborting\n");
+	}
+
+	if (val < 0) {
+		printf("usb_interrupt_write failed: %d\n", val);
+		return val;
+	}
+	if (val != 8) {
+		printf("usb_interrupt_write failed: %d\n", val);
+		return -1;
+	}
+	++inflight;
+	return 0;
+#else
+	return (write_noretry(cmd,timeout_override));
+#endif
+
+}	
+
+#endif