78 lines
2.6 KiB
C
78 lines
2.6 KiB
C
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/*
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* Copyright (C) 2006 Paul Davis
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* Copyright (C) 2007 Michael Taht
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* */
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/* This header file is basically where all the tranzport debuggable options go.
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Try to only check it in with minimal debugging enabled so production
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systems don't have to fiddle with it. */
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/* Design notes: The tranzport is a unique device, basically a
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20x2 character lcd gui with (almost) 22 shift keys and 8 blinking lights.
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As such it has several unique constraints. In the libusb driver,
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the device exerts flow control
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by having a usb write fail. It is pointless to retry madly at that point,
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the device is busy, and it's not going to become unbusy very quickly.
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So writes need to be either "mandatory" or "unreliable", and therein
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lies the rub, as the kernel can also drop writes, and missing an
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interrupt in userspace is also generally bad.
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However, the kernel driver retries writes for you and also buffers and
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compresses incoming wheel events - it will rarely, if ever, drop data.
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A more complex surface might have hundreds of lights and several displays.
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mike@taht.net
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*/
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#ifndef ardour_tranzport_base
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#define ardour_tranzport_base
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#define DEFAULT_USB_TIMEOUT 10
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#define MAX_RETRY 1
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#define MAX_TRANZPORT_INFLIGHT 4
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#define DEBUG_TRANZPORT 0
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#ifndef HAVE_TRANZPORT_KERNEL_DRIVER
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#define HAVE_TRANZPORT_KERNEL_DRIVER 0
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#endif
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#ifndef HAVE_TRANZPORT_MIDI_DRIVER
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#define HAVE_TRANZPORT_MIDI_DRIVER 0
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#endif
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// for now, this is what the device is called
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#define TRANZPORT_DEVICE "/dev/tranzport0"
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#if DEBUG_TRANZPORT > 0
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#define DEBUG_TRANZPORT_SCREEN 10
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#define DEBUG_TRANZPORT_BITS 10
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#define DEBUG_TRANZPORT_LIGHTS 10
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#define DEBUG_TRANZPORT_STATE 10
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#else
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#define DEBUG_TRANZPORT 0
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#define DEBUG_TRANZPORT_BITS 0
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#define DEBUG_TRANZPORT_SCREEN 0
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#define DEBUG_TRANZPORT_LIGHTS 0
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#define DEBUG_TRANZPORT_STATE 0
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#endif
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#endif /* ardour_tranzport_base */
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