--- /dev/null
+/*
+ * 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
projects / ardour.git / blobdiff