Add initial MIDI protocol decoder.

This supports a certain number of MIDI messages already, but not yet all
of them. More will be added later.

4 files changed, 747 insertions, 0 deletions

diff --git a/decoders/midi/Makefile.am b/decoders/midi/Makefile.am
new file mode 100644
index 0000000..f45d086
--- /dev/null
+++ b/decoders/midi/Makefile.am
@@ -0,0 +1,26 @@
+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+pkgdatadir = $(DECODERS_DIR)/midi
+
+dist_pkgdata_DATA = __init__.py pd.py lists.py
+
+CLEANFILES = *.pyc
+
diff --git a/decoders/midi/__init__.py b/decoders/midi/__init__.py
new file mode 100644
index 0000000..029cfc0
--- /dev/null
+++ b/decoders/midi/__init__.py
@@ -0,0 +1,30 @@
+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+'''
+MIDI protocol decoder.
+
+The MIDI protocol is layered on top of the UART (async serial) protocol,
+with a fixed baud rate of 31250 baud (+/- 1%) and 8n1 settings. Bytes are
+sent LSB-first.
+'''
+
+from .pd import *
+
diff --git a/decoders/midi/lists.py b/decoders/midi/lists.py
new file mode 100644
index 0000000..bc0f9b8
--- /dev/null
+++ b/decoders/midi/lists.py
@@ -0,0 +1,470 @@
+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+status_bytes = {
+    # Channel voice messages
+    0x80: 'note off',
+    0x90: 'note on', # However, velocity = 0 means "note off".
+    0xa0: 'polyphonic key pressure / aftertouch',
+    0xb0: 'control change',
+    0xc0: 'program change',
+    0xd0: 'channel pressure / aftertouch',
+    0xe0: 'pitch bend change',
+
+    # Channel mode messages
+    # 0xb0: 'select channel mode', # Note: Same as 'control change'.
+
+    # System exclusive messages
+    0xf0: 'system exclusive (SysEx)',
+
+    # System common messages
+    0xf1: 'MIDI time code quarter frame',
+    0xf2: 'song position pointer',
+    0xf3: 'song select',
+    0xf4: 'undefined',
+    0xf5: 'undefined',
+    0xf6: 'tune request',
+    0xf7: 'end of system exclusive (EOX)',
+
+    # System real time messages
+    0xf8: 'timing clock',
+    0xf9: 'undefined',
+    0xfa: 'start',
+    0xfb: 'continue',
+    0xfc: 'stop',
+    0xfd: 'undefined',
+    0xfe: 'active sensing',
+    0xff: 'system reset',
+}
+
+# Universal system exclusive (SysEx) messages, non-realtime (0x7e)
+universal_sysex_nonrealtime = {
+    (0x00, None): 'unused',
+    (0x01, None): 'sample dump header',
+    (0x02, None): 'sample data packet',
+    (0x03, None): 'sample dump request',
+
+    (0x04, None): 'MIDI time code',
+    (0x04, 0x00): 'special',
+    (0x04, 0x01): 'punch in points',
+    (0x04, 0x02): 'punch out points',
+    (0x04, 0x03): 'delete punch in point',
+    (0x04, 0x04): 'delete punch out point',
+    (0x04, 0x05): 'event start point',
+    (0x04, 0x06): 'event stop point',
+    (0x04, 0x07): 'event start points with additional info',
+    (0x04, 0x08): 'event stop points with additional info',
+    (0x04, 0x09): 'delete event start point',
+    (0x04, 0x0a): 'delete event stop point',
+    (0x04, 0x0b): 'cue points',
+    (0x04, 0x0c): 'cue points with additional info',
+    (0x04, 0x0d): 'delete cue point',
+    (0x04, 0x0e): 'event name in additional info',
+
+    (0x05, None): 'sample dump extensions',
+    (0x05, 0x01): 'multiple loop points',
+    (0x05, 0x02): 'loop points request',
+
+    (0x06, None): 'general information',
+    (0x06, 0x01): 'identity request',
+    (0x06, 0x02): 'identity reply',
+
+    (0x07, None): 'file dump',
+    (0x07, 0x01): 'header',
+    (0x07, 0x02): 'data packet',
+    (0x07, 0x03): 'request',
+
+    (0x08, None): 'MIDI tuning standard',
+    (0x08, 0x00): 'bulk dump request',
+    (0x08, 0x01): 'bulk dump reply',
+
+    (0x09, None): 'general MIDI',
+    (0x09, 0x01): 'general MIDI system on',
+    (0x09, 0x02): 'general MIDI system off',
+
+    (0x7b, None): 'end of file',
+    (0x7c, None): 'wait',
+    (0x7d, None): 'cancel',
+    (0x7e, None): 'nak',
+    (0x7f, None): 'ack',
+}
+
+# Universal system exclusive (SysEx) messages, realtime (0x7f)
+universal_sysex_realtime = {
+    (0x00, None): 'unused',
+
+    (0x01, None): 'MIDI time code',
+    (0x01, 0x01): 'full message',
+    (0x01, 0x02): 'user bits',
+
+    (0x02, None): 'MIDI show control',
+    (0x02, 0x00): 'MSC extensions',
+    # (0x02, TODO): 'TODO', # 0x01 - 0x7f: MSC commands.
+
+    (0x03, None): 'notation information',
+    (0x03, 0x01): 'bar number',
+    (0x03, 0x02): 'time signature (immediate)',
+    (0x03, 0x42): 'time signature (delayed)',
+
+    (0x04, None): 'device control',
+    (0x04, 0x01): 'master volume',
+    (0x04, 0x02): 'master balance',
+
+    (0x05, None): 'real time MTC cueing',
+    (0x05, 0x00): 'special',
+    (0x05, 0x01): 'punch in points',
+    (0x05, 0x02): 'punch out points',
+    (0x05, 0x03): 'reserved',
+    (0x05, 0x04): 'reserved',
+    (0x05, 0x05): 'event start points',
+    (0x05, 0x06): 'event stop points',
+    (0x05, 0x07): 'event start points with additional info',
+    (0x05, 0x08): 'event stop points with additional info',
+    (0x05, 0x09): 'reserved',
+    (0x05, 0x0a): 'reserved',
+    (0x05, 0x0b): 'cue points',
+    (0x05, 0x0c): 'cue points with additional info',
+    (0x05, 0x0d): 'reserved',
+    (0x05, 0x0e): 'event name in additional info',
+
+    (0x06, None): 'MIDI machine control commands',
+    # (0x06, TODO): 'TODO', # 0x00 - 0x7f: MMC commands.
+
+    (0x07, None): 'MIDI machine control responses',
+    # (0x07, TODO): 'TODO', # 0x00 - 0x7f: MMC commands.
+
+    (0x08, None): 'MIDI tuning standard',
+    (0x85, 0x02): 'note change',
+}
+
+# Note: Not all IDs are used/listed, i.e. there are some "holes".
+sysex_manufacturer_ids = {
+    # American group
+    (0x01): 'Sequential',
+    (0x02): 'IDP',
+    (0x03): 'Voyetra/Octave-Plateau',
+    (0x04): 'Moog',
+    (0x05): 'Passport Designs',
+    (0x06): 'Lexicon',
+    (0x07): 'Kurzweil',
+    (0x08): 'Fender',
+    (0x09): 'Gulbransen',
+    (0x0a): 'AKG Acoustics',
+    (0x0b): 'Voyce Music',
+    (0x0c): 'Waveframe Corp',
+    (0x0d): 'ADA Signal Processors',
+    (0x0e): 'Garfield Electronics',
+    (0x0f): 'Ensoniq',
+    (0x10): 'Oberheim',
+    (0x11): 'Apple Computer',
+    (0x12): 'Grey Matter Response',
+    (0x13): 'Digidesign',
+    (0x14): 'Palm Tree Instruments',
+    (0x15): 'JLCooper Electronics',
+    (0x16): 'Lowrey',
+    (0x17): 'Adams-Smith',
+    (0x18): 'Emu Systems',
+    (0x19): 'Harmony Systems',
+    (0x1a): 'ART',
+    (0x1b): 'Baldwin',
+    (0x1c): 'Eventide',
+    (0x1d): 'Inventronics',
+    (0x1f): 'Clarity',
+
+    (0x00, 0x00, 0x01): 'Time Warner Interactive',
+    (0x00, 0x00, 0x07): 'Digital Music Corp.',
+    (0x00, 0x00, 0x08): 'IOTA Systems',
+    (0x00, 0x00, 0x09): 'New England Digital',
+    (0x00, 0x00, 0x0a): 'Artisyn',
+    (0x00, 0x00, 0x0b): 'IVL Technologies',
+    (0x00, 0x00, 0x0c): 'Southern Music Systems',
+    (0x00, 0x00, 0x0d): 'Lake Butler Sound Company',
+    (0x00, 0x00, 0x0e): 'Alesis',
+    (0x00, 0x00, 0x10): 'DOD Electronics',
+    (0x00, 0x00, 0x11): 'Studer-Editech',
+    (0x00, 0x00, 0x14): 'Perfect Fretworks',
+    (0x00, 0x00, 0x15): 'KAT',
+    (0x00, 0x00, 0x16): 'Opcode',
+    (0x00, 0x00, 0x17): 'Rane Corp.',
+    (0x00, 0x00, 0x18): 'Anadi Inc.',
+    (0x00, 0x00, 0x19): 'KMX',
+    (0x00, 0x00, 0x1a): 'Allen & Heath Brenell',
+    (0x00, 0x00, 0x1b): 'Peavy Electronics',
+    (0x00, 0x00, 0x1c): '360 Systems',
+    (0x00, 0x00, 0x1d): 'Spectrum Design and Development',
+    (0x00, 0x00, 0x1e): 'Marquis Music',
+    (0x00, 0x00, 0x1f): 'Zeta Systems',
+
+    (0x00, 0x00, 0x20): 'Axxes',
+    (0x00, 0x00, 0x21): 'Orban',
+    (0x00, 0x00, 0x24): 'KTI',
+    (0x00, 0x00, 0x25): 'Breakaway Technologies',
+    (0x00, 0x00, 0x26): 'CAE',
+    (0x00, 0x00, 0x29): 'Rocktron Corp.',
+    (0x00, 0x00, 0x2a): 'PianoDisc',
+    (0x00, 0x00, 0x2b): 'Cannon Research Group',
+    (0x00, 0x00, 0x2d): 'Rogers Instrument Corp.',
+    (0x00, 0x00, 0x2e): 'Blue Sky Logic',
+    (0x00, 0x00, 0x2f): 'Encore Electronics',
+
+    (0x00, 0x00, 0x30): 'Uptown',
+    (0x00, 0x00, 0x31): 'Voce',
+    (0x00, 0x00, 0x32): 'CTI Audio, Inc. (Music. Intel Dev.)',
+    (0x00, 0x00, 0x33): 'S&S Research',
+    (0x00, 0x00, 0x34): 'Broderbund Software, Inc.',
+    (0x00, 0x00, 0x35): 'Allen Organ Co.',
+    (0x00, 0x00, 0x37): 'Music Quest',
+    (0x00, 0x00, 0x38): 'APHEX',
+    (0x00, 0x00, 0x39): 'Gallien Krueger',
+    (0x00, 0x00, 0x3a): 'IBM',
+    (0x00, 0x00, 0x3c): 'Hotz Instruments Technologies',
+    (0x00, 0x00, 0x3d): 'ETA Lighting',
+    (0x00, 0x00, 0x3e): 'NSI Corporation',
+    (0x00, 0x00, 0x3f): 'Ad Lib, Inc.',
+
+    (0x00, 0x00, 0x40): 'Richmond Sound Design',
+    (0x00, 0x00, 0x41): 'Microsoft',
+    (0x00, 0x00, 0x42): 'The Software Toolworks',
+    (0x00, 0x00, 0x43): 'Niche/RJMG',
+    (0x00, 0x00, 0x44): 'Intone',
+    (0x00, 0x00, 0x47): 'GT Electronics / Groove Tubes',
+    (0x00, 0x00, 0x49): 'Timeline Vista',
+    (0x00, 0x00, 0x4a): 'Mesa Boogie',
+    (0x00, 0x00, 0x4c): 'Sequoia Development',
+    (0x00, 0x00, 0x4d): 'Studio Electronics',
+    (0x00, 0x00, 0x4e): 'Euphonix',
+    (0x00, 0x00, 0x4f): 'InterMIDI, Inc.',
+
+    (0x00, 0x00, 0x50): 'MIDI Solutions',
+    (0x00, 0x00, 0x51): '3DO Company',
+    (0x00, 0x00, 0x52): 'Lightwave Research',
+    (0x00, 0x00, 0x53): 'Micro-W',
+    (0x00, 0x00, 0x54): 'Spectral Synthesis',
+    (0x00, 0x00, 0x55): 'Lone Wolf',
+    (0x00, 0x00, 0x56): 'Studio Technologies',
+    (0x00, 0x00, 0x57): 'Peterson EMP',
+    (0x00, 0x00, 0x58): 'Atari',
+    (0x00, 0x00, 0x59): 'Marion Systems',
+    (0x00, 0x00, 0x5a): 'Design Event',
+    (0x00, 0x00, 0x5b): 'Winjammer Software',
+    (0x00, 0x00, 0x5c): 'AT&T Bell Labs',
+    (0x00, 0x00, 0x5e): 'Symetrix',
+    (0x00, 0x00, 0x5f): 'MIDI the World',
+    
+    (0x00, 0x00, 0x60): 'Desper Products',
+    (0x00, 0x00, 0x61): 'Micros\'N MIDI',
+    (0x00, 0x00, 0x62): 'Accordians Intl',
+    (0x00, 0x00, 0x63): 'EuPhonics',
+    (0x00, 0x00, 0x64): 'Musonix',
+    (0x00, 0x00, 0x65): 'Turtle Beach Systems',
+    (0x00, 0x00, 0x66): 'Mackie Designs',
+    (0x00, 0x00, 0x67): 'Compuserve',
+    (0x00, 0x00, 0x68): 'BES Technologies',
+    (0x00, 0x00, 0x69): 'QRS Music Rolls',
+    (0x00, 0x00, 0x6a): 'P G Music',
+    (0x00, 0x00, 0x6b): 'Sierra Semiconductor',
+    (0x00, 0x00, 0x6c): 'EpiGraf Audio Visual',
+    (0x00, 0x00, 0x6d): 'Electronics Deiversified',
+    (0x00, 0x00, 0x6e): 'Tune 1000',
+    (0x00, 0x00, 0x6f): 'Advanced Micro Devices',
+
+    (0x00, 0x00, 0x70): 'Mediamation',
+    (0x00, 0x00, 0x71): 'Sabine Music',
+    (0x00, 0x00, 0x72): 'Woog Labs',
+    (0x00, 0x00, 0x73): 'Micropolis',
+    (0x00, 0x00, 0x74): 'Ta Horng Musical Inst.',
+    (0x00, 0x00, 0x75): 'eTek (formerly Forte)',
+    (0x00, 0x00, 0x76): 'Electrovoice',
+    (0x00, 0x00, 0x77): 'Midisoft',
+    (0x00, 0x00, 0x78): 'Q-Sound Labs',
+    (0x00, 0x00, 0x79): 'Westrex',
+    (0x00, 0x00, 0x7a): 'NVidia',
+    (0x00, 0x00, 0x7b): 'ESS Technology',
+    (0x00, 0x00, 0x7c): 'MediaTrix Peripherals',
+    (0x00, 0x00, 0x7d): 'Brooktree',
+    (0x00, 0x00, 0x7e): 'Otari',
+    (0x00, 0x00, 0x7f): 'Key Electronics',
+
+    (0x00, 0x01, 0x01): 'Crystalake Multimedia',
+    (0x00, 0x01, 0x02): 'Crystal Semiconductor',
+    (0x00, 0x01, 0x03): 'Rockwell Semiconductor',
+
+    # European group
+    (0x20): 'Passac',
+    (0x21): 'SIEL',
+    (0x22): 'Synthaxe',
+    (0x24): 'Hohner',
+    (0x25): 'Twister',
+    (0x26): 'Solton',
+    (0x27): 'Jellinghaus MS',
+    (0x28): 'Southworth Music Systems',
+    (0x29): 'PPG',
+    (0x2a): 'JEN',
+    (0x2b): 'SSL Limited',
+    (0x2c): 'Audio Veritrieb',
+    (0x2f): 'Elka',
+
+    (0x30): 'Dynacord',
+    (0x31): 'Viscount',
+    (0x33): 'Clavia Digital Instruments',
+    (0x34): 'Audio Architecture',
+    (0x35): 'GeneralMusic Corp.',
+    (0x39): 'Soundcraft Electronics',
+    (0x3b): 'Wersi',
+    (0x3c): 'Avab Elektronik Ab',
+    (0x3d): 'Digigram',
+    (0x3e): 'Waldorf Electronics',
+    (0x3f): 'Quasimidi',
+
+    (0x00, 0x20, 0x00): 'Dream',
+    (0x00, 0x20, 0x01): 'Strand Lighting',
+    (0x00, 0x20, 0x02): 'Amek Systems',
+    (0x00, 0x20, 0x04): 'Böhm Electronic',
+    (0x00, 0x20, 0x06): 'Trident Audio',
+    (0x00, 0x20, 0x07): 'Real World Studio',
+    (0x00, 0x20, 0x09): 'Yes Technology',
+    (0x00, 0x20, 0x0a): 'Audiomatica',
+    (0x00, 0x20, 0x0b): 'Bontempi/Farfisa',
+    (0x00, 0x20, 0x0c): 'F.B.T. Elettronica',
+    (0x00, 0x20, 0x0d): 'MidiTemp',
+    (0x00, 0x20, 0x0e): 'LA Audio (Larking Audio)',
+    (0x00, 0x20, 0x0f): 'Zero 88 Lighting Limited',
+
+    (0x00, 0x20, 0x10): 'Micon Audio Electronics GmbH',
+    (0x00, 0x20, 0x11): 'Forefront Technology',
+    (0x00, 0x20, 0x13): 'Kenton Electronics',
+    (0x00, 0x20, 0x15): 'ADB',
+    (0x00, 0x20, 0x16): 'Marshall Products',
+    (0x00, 0x20, 0x17): 'DDA',
+    (0x00, 0x20, 0x18): 'BSS',
+    (0x00, 0x20, 0x19): 'MA Lighting Technology',
+    (0x00, 0x20, 0x1a): 'Fatar',
+    (0x00, 0x20, 0x1b): 'QSC Audio',
+    (0x00, 0x20, 0x1c): 'Artisan Classic Organ',
+    (0x00, 0x20, 0x1d): 'Orla Spa',
+    (0x00, 0x20, 0x1e): 'Pinnacle Audio',
+    (0x00, 0x20, 0x1f): 'TC Electronics',
+
+    (0x00, 0x20, 0x20): 'Doepfer Musikelektronik',
+    (0x00, 0x20, 0x21): 'Creative Technology Pte',
+    (0x00, 0x20, 0x22): 'Minami/Seiyddo',
+    (0x00, 0x20, 0x23): 'Goldstar',
+    (0x00, 0x20, 0x24): 'Midisoft s.a.s di M. Cima',
+    (0x00, 0x20, 0x25): 'Samick',
+    (0x00, 0x20, 0x26): 'Penny and Giles',
+    (0x00, 0x20, 0x27): 'Acorn Computer',
+    (0x00, 0x20, 0x28): 'LSC Electronics',
+    (0x00, 0x20, 0x29): 'Novation EMS',
+    (0x00, 0x20, 0x2a): 'Samkyung Mechatronics',
+    (0x00, 0x20, 0x2b): 'Medeli Electronics',
+    (0x00, 0x20, 0x2c): 'Charlie Lab',
+    (0x00, 0x20, 0x2d): 'Blue Chip Music Tech',
+    (0x00, 0x20, 0x2e): 'BEE OH Corp',
+
+    # Japanese group
+    (0x40): 'Kawai',
+    (0x41): 'Roland',
+    (0x42): 'Korg',
+    (0x43): 'Yamaha',
+    (0x44): 'Casio',
+    (0x46): 'Kamiya Studio',
+    (0x47): 'Akai',
+    (0x48): 'Japan Victor',
+    (0x49): 'Mesosha',
+    (0x4a): 'Hoshino Gakki',
+    (0x4b): 'Fujitsu Elect',
+    (0x4c): 'Sony',
+    (0x4d): 'Nisshin Onpa',
+    (0x4e): 'TEAC',
+    (0x50): 'Matsushita Electric',
+    (0x51): 'Fostex',
+    (0x52): 'Zoom',
+    (0x53): 'Midori Electronics',
+    (0x54): 'Matsushita Communication Industrial',
+    (0x55): 'Suzuki Musical Inst. Mfg.',
+}
+
+control_functions = {
+    0x00: 'bank select',
+    0x01: 'modulation wheel/lever',
+    0x02: 'breath controller',
+    # 0x03: undefined
+    0x04: 'foot controller',
+    0x05: 'portamento time',
+    0x06: 'data entry MSB',
+    0x07: 'channel volume (formerly main volume)',
+    0x08: 'balance',
+    # 0x09: undefined
+    0x0a: 'pan',
+    0x0b: 'expression controller',
+    0x0c: 'effect control 1',
+    0x0d: 'effect control 2',
+    # 0x0e-0x0f: undefined
+    0x10: 'general purpose controller 1',
+    0x11: 'general purpose controller 2',
+    0x12: 'general purpose controller 3',
+    0x13: 'general purpose controller 4',
+    # 0x14-0x1f: undefined
+    # 0x20-0x3f: LSB for values 0x00-0x1f
+    0x40: 'damper pedal (sustain)',
+    0x41: 'portamento on/off',
+    0x42: 'sostenuto',
+    0x43: 'soft pedal',
+    0x44: 'legato footswitch', # vv: 00-3f = normal, 40-7f = legato
+    0x45: 'hold 2',
+    0x46: 'sound controller 1 (default: sound variation)',
+    0x47: 'sound controller 2 (default: timbre / harmonic intensity)',
+    0x48: 'sound controller 3 (default: release time)',
+    0x49: 'sound controller 4 (default: attack time)',
+    0x4a: 'sound controller 5 (default: brightness)',
+    0x4b: 'sound controller 6 (GM2 default: decay time)',
+    0x4c: 'sound controller 7 (GM2 default: vibrato rate)',
+    0x4d: 'sound controller 8 (GM2 default: vibrato depth)',
+    0x4e: 'sound controller 9 (GM2 default: vibrato delay)',
+    0x4f: 'sound controller 10',
+    0x50: 'general purpose controller 5',
+    0x51: 'general purpose controller 6',
+    0x52: 'general purpose controller 7',
+    0x53: 'general purpose controller 8',
+    0x54: 'portamento control',
+    # 0x55-0x5a: undefined
+    0x5b: 'effects 1 depth (formerly external effects depth)',
+    0x5c: 'effects 2 depth (formerly tremolo depth)',
+    0x5d: 'effects 3 depth (formerly chorus depth)',
+    0x5e: 'effects 4 depth (formerly celeste/detune depth)',
+    0x5f: 'effects 5 depth (formerly phaser depth)',
+    0x60: 'data increment',
+    0x61: 'data decrement',
+    0x62: 'non-registered parameter number LSB',
+    0x63: 'non-registered parameter number MSB',
+    0x64: 'registered parameter number LSB',
+    0x65: 'registered parameter number MSB',
+    # 0x66-0x77: undefined
+    # 0x78-0x7f: reserved for channel mode messages
+    0x78: 'all sound off',
+    0x79: 'reset all controllers',
+    0x7a: 'local control on/off',
+    0x7b: 'all notes off',
+    0x7c: 'omni mode off', # all notes off
+    0x7d: 'omni mode on', # all notes off
+    0x7e: 'poly mode off', # mono mode on, all notes off
+    0x7f: 'poly mode on', # mono mode off, all notes off
+}
+
diff --git a/decoders/midi/pd.py b/decoders/midi/pd.py
new file mode 100644
index 0000000..f718632
--- /dev/null
+++ b/decoders/midi/pd.py
@@ -0,0 +1,221 @@
+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+# MIDI protocol decoder
+
+import sigrokdecode as srd
+from .lists import *
+
+RX = 0
+TX = 1
+
+class Decoder(srd.Decoder):
+    api_version = 1
+    id = 'midi'
+    name = 'MIDI'
+    longname = 'Musical Instrument Digital Interface'
+    desc = 'Musical Instrument Digital Interface (MIDI) protocol.'
+    license = 'gplv2+'
+    inputs = ['uart']
+    outputs = ['midi']
+    probes = []
+    optional_probes = []
+    options = {}
+    annotations = [
+        ['Text (verbose)', 'Human-readable text (verbose)'],
+        # ['Text', 'Human-readable text'],
+    ]
+
+    def __init__(self, **kwargs):
+        self.cmd = []
+        self.state = 'IDLE'
+        self.ss = None
+        self.es = None
+        self.ss_block = None
+        self.es_block = None
+
+    def start(self, metadata):
+        # self.out_proto = self.add(srd.OUTPUT_PROTO, 'midi')
+        self.out_ann = self.add(srd.OUTPUT_ANN, 'midi')
+
+    def report(self):
+        pass
+
+    def putx(self, data):
+        self.put(self.ss_block, self.es_block, self.out_ann, data)
+
+    def handle_channel_msg_0x80(self):
+        # Note off: 8n kk vv
+        # n = channel, kk = note, vv = velocity
+        c = self.cmd
+        if len(c) < 3:
+            return
+        self.es_block = self.es
+        msg, chan, note, velocity = c[0] & 0xf0, (c[0] & 0x0f) + 1, c[1], c[2]
+        self.putx([0, ['Channel %d: %s (note = %d, velocity = %d)' % \
+                  (chan, status_bytes[msg], note, velocity)]])
+        self.cmd, self.state = [], 'IDLE'
+
+    def handle_channel_msg_0x90(self):
+        # Note on: 9n kk vv
+        # n = channel, kk = note, vv = velocity
+        # If velocity == 0 that actually means 'note off', though.
+        c = self.cmd
+        if len(c) < 3:
+            return
+        self.es_block = self.ss
+        msg, chan, note, velocity = c[0] & 0xf0, (c[0] & 0x0f) + 1, c[1], c[2]
+        s = 'note off' if (velocity == 0) else status_bytes[msg]
+        self.putx([0, ['Channel %d: %s (note = %d, velocity = %d)' % \
+                  (chan, s, note, velocity)]])
+        self.cmd, self.state = [], 'IDLE'
+
+    def handle_channel_msg_0xa0(self):
+        # Polyphonic key pressure / aftertouch: An kk vv
+        # n = channel, kk = polyphonic key pressure, vv = pressure value
+        pass # TODO
+
+    def handle_controller_0x44(self):
+        # Legato footswitch: Bn 44 vv
+        # n = channel, vv = value (<= 0x3f: normal, > 0x3f: legato)
+        chan, vv = (self.cmd[0] & 0x0f) + 1, self.cmd[2]
+        t = 'normal' if vv <= 0x3f else 'legato'
+        self.putx([0, ['Channel %d: control function \'%s\' = %s' % \
+                  (chan, control_functions[0x44], t)]])
+
+    def handle_controller_0x54(self):
+        # Portamento control (PTC): Bn 54 kk
+        # n = channel, kk = source note for pitch reference
+        chan, kk = (self.cmd[0] & 0x0f) + 1, self.cmd[2]
+        self.putx([0, ['Channel %d: control function \'%s\' (source note ' \
+                  '= %d)' % (chan, control_functions[0x54], kk)]])
+
+    def handle_controller_generic(self):
+        c = self.cmd
+        chan, fn, param = (c[0] & 0x0f) + 1, c[1], c[2]
+        ctrl_fn = control_functions.get(fn, 'undefined')
+        self.putx([0, ['Channel %d: control change to function \'%s\' ' \
+                  '(param = 0x%02x)' % (chan, ctrl_fn, param)]])
+
+    def handle_channel_msg_0xb0(self):
+        # Control change (or channel mode messages): Bn cc vv
+        # n = channel, cc = control number (0 - 119), vv = control value
+        c = self.cmd
+        if (len(c) >= 2) and (c[1] in range(0x78, 0x7f + 1)):
+            # This is not a control change, but rather a channel mode message.
+            # TODO: Handle channel mode messages.
+            return
+        if len(c) < 3:
+            return
+        self.es_block = self.es
+        handle_ctrl = getattr(self, 'handle_controller_0x%02x' % c[1],
+                              self.handle_controller_generic)
+        handle_ctrl()
+        self.cmd, self.state = [], 'IDLE'
+
+    def handle_channel_msg_0xc0(self):
+        # Program change: Cn pp
+        # n = channel, pp = program number (0 - 127)
+        pass # TODO
+
+    def handle_channel_msg_0xd0(self):
+        # Channel pressure / aftertouch: Dn vv
+        # n = channel, vv = pressure value
+        pass # TODO
+
+    def handle_channel_msg_0xe0(self):
+        # Pitch bend change: En ll mm
+        # n = channel, ll = pitch bend change LSB, mm = pitch bend change MSB
+        pass # TODO
+
+    def handle_channel_msg_generic(self):
+        msg_type = self.cmd[0] & 0xf0
+        self.putx([0, ['Unknown channel message type: 0x%02x' % msg_type]])
+        # TODO: Handle properly.
+
+    def handle_channel_msg(self, newbyte):
+        self.cmd.append(newbyte)
+        msg_type = self.cmd[0] & 0xf0
+        handle_msg = getattr(self, 'handle_channel_msg_0x%02x' % msg_type,
+                             self.handle_channel_msg_generic)
+        handle_msg()
+
+    def handle_sysex_msg(self, newbyte):
+        # SysEx message: 1 status byte, x data bytes, EOX byte
+        self.cmd.append(newbyte)
+        if newbyte != 0xf7: # EOX
+            return
+        self.es_block = self.es
+        # TODO: Get message ID, vendor ID, message contents, etc.
+        self.putx([0, ['SysEx message']])
+        self.cmd, self.state = [], 'IDLE'
+
+    def handle_syscommon_msg(self, newbyte):
+        pass # TODO
+
+    def handle_sysrealtime_msg(self, newbyte):
+        # System realtime message: 0b11111ttt (t = message type)
+        self.es_block = self.ss
+        self.putx([0, ['System realtime message: %s' % status_bytes[newbyte]]])
+        self.cmd, self.state = [], 'IDLE'
+
+    def decode(self, ss, es, data):
+        ptype, rxtx, pdata = data
+
+        # For now, ignore all UART packets except the actual data packets.
+        if ptype != 'DATA':
+            return
+
+        self.ss, self.es = ss, es
+
+        # Short MIDI overview:
+        #  - Status bytes are 0x80-0xff, data bytes are 0x00-0x7f.
+        #  - Most messages: 1 status byte, 1-2 data bytes.
+        #  - Real-time system messages: always 1 byte.
+        #  - SysEx messages: 1 status byte, n data bytes, EOX byte.
+
+        # State machine.
+        if self.state == 'IDLE':
+            # Wait until we see a status byte (bit 7 must be set).
+            if pdata < 0x80:
+                return # TODO: How to handle? Ignore?
+            # This is a status byte, remember the start sample.
+            self.ss_block = ss
+            if pdata in range(0x80, 0xef + 1):
+                self.state = 'HANDLE CHANNEL MSG'
+            elif pdata == 0xf0:
+                self.state = 'HANDLE SYSEX MSG'
+            elif pdata in range(0xf1, 0xf7 + 1):
+                self.state = 'HANDLE SYSCOMMON MSG'
+            elif pdata in range(0xf8, 0xff + 1):
+                self.state = 'HANDLE SYSREALTIME MSG'
+
+        # Yes, this is intentionally _not_ an 'elif' here.
+        if self.state == 'HANDLE CHANNEL MSG':
+            self.handle_channel_msg(pdata)
+        elif self.state == 'HANDLE SYSEX MSG':
+            self.handle_sysex_msg(pdata)
+        elif self.state == 'HANDLE SYSCOMMON MSG':
+            self.handle_syscommon_msg(pdata)
+        elif self.state == 'HANDLE SYSREALTIME MSG':
+            self.handle_sysrealtime_msg(pdata)
+        else:
+            raise Exception('Invalid state: %s' % self.state)
+