725 lines
15 KiB
C++
725 lines
15 KiB
C++
/*
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Copyright (C) 2000 Paul Barton-Davis
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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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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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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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$Id$
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*/
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#include <fcntl.h>
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#include <map>
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#include "timecode/time.h"
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#include "timecode/bbt_time.h"
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#include "pbd/error.h"
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#include "midi++/mmc.h"
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#include "midi++/port.h"
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#include "midi++/parser.h"
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#ifndef __INT_MAX__ // 'ssize_t' won't be defined yet
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typedef long ssize_t;
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#endif
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using namespace std;
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using namespace MIDI;
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using namespace PBD;
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/**
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* As libtimecode is linked statically to libmidi++ this
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* is necessary to pull in all the symbols from libtimecode
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* so they are exported for other users of libtimecode.
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*/
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double tmp = Timecode::BBT_Time::ticks_per_beat;
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static std::map<int,string> mmc_cmd_map;
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static void build_mmc_cmd_map ()
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{
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pair<int,string> newpair;
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newpair.first = 0x1;
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newpair.second = "Stop";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x2;
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newpair.second = "Play";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x3;
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newpair.second = "DeferredPlay";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x4;
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newpair.second = "FastForward";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x5;
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newpair.second = "Rewind";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x6;
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newpair.second = "RecordStrobe";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x7;
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newpair.second = "RecordExit";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x8;
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newpair.second = "RecordPause";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x9;
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newpair.second = "Pause";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0xA;
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newpair.second = "Eject";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0xB;
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newpair.second = "Chase";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0xC;
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newpair.second = "CommandErrorReset";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0xD;
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newpair.second = "MmcReset";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x20;
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newpair.second = "Illegal Mackie Jog Start";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x21;
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newpair.second = "Illegal Mackie Jog Stop";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x40;
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newpair.second = "Write";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x41;
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newpair.second = "MaskedWrite";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x42;
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newpair.second = "Read";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x43;
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newpair.second = "Update";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x44;
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newpair.second = "Locate";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x45;
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newpair.second = "VariablePlay";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x46;
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newpair.second = "Search";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x47;
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newpair.second = "Shuttle";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x48;
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newpair.second = "Step";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x49;
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newpair.second = "AssignSystemMaster";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x4A;
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newpair.second = "GeneratorCommand";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x4B;
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newpair.second = "MtcCommand";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x4C;
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newpair.second = "Move";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x4D;
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newpair.second = "Add";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x4E;
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newpair.second = "Subtract";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x4F;
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newpair.second = "DropFrameAdjust";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x50;
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newpair.second = "Procedure";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x51;
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newpair.second = "Event";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x52;
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newpair.second = "Group";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x53;
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newpair.second = "CommandSegment";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x54;
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newpair.second = "DeferredVariablePlay";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x55;
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newpair.second = "RecordStrobeVariable";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x7C;
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newpair.second = "Wait";
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mmc_cmd_map.insert (newpair);
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newpair.first = 0x7F;
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newpair.second = "Resume";
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mmc_cmd_map.insert (newpair);
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}
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MachineControl::MachineControl ()
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{
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build_mmc_cmd_map ();
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_receive_device_id = 0x7f;
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_send_device_id = 0x7f;
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}
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void
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MachineControl::set_ports (MIDI::Port* ip, MIDI::Port* op)
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{
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port_connections.drop_connections ();
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_input_port = ip;
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_output_port = op;
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_input_port->parser()->mmc.connect_same_thread (port_connections, boost::bind (&MachineControl::process_mmc_message, this, _1, _2, _3));
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_input_port->parser()->start.connect_same_thread (port_connections, boost::bind (&MachineControl::spp_start, this));
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_input_port->parser()->contineu.connect_same_thread (port_connections, boost::bind (&MachineControl::spp_continue, this));
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_input_port->parser()->stop.connect_same_thread (port_connections, boost::bind (&MachineControl::spp_stop, this));
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}
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void
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MachineControl::set_receive_device_id (MIDI::byte id)
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{
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_receive_device_id = id & 0x7f;
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}
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void
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MachineControl::set_send_device_id (MIDI::byte id)
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{
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_send_device_id = id & 0x7f;
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}
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bool
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MachineControl::is_mmc (MIDI::byte *sysex_buf, size_t len)
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{
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if (len < 4 || len > 48) {
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return false;
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}
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if (sysex_buf[1] != 0x7f) {
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return false;
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}
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if (sysex_buf[3] != 0x6 && /* MMC Command */
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sysex_buf[3] != 0x7) { /* MMC Response */
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return false;
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}
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return true;
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}
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void
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MachineControl::process_mmc_message (Parser &, MIDI::byte *msg, size_t len)
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{
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size_t skiplen;
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byte *mmc_msg;
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bool single_byte;
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/* Reject if its not for us. 0x7f is the "all-call" device ID */
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/* msg[0] = 0x7f (MMC sysex ID(
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msg[1] = device ID
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msg[2] = 0x6 (MMC command) or 0x7 (MMC response)
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msg[3] = MMC command code
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msg[4] = (typically) byte count for following part of command
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*/
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#if 0
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cerr << "*** me = " << (int) _receive_device_id << " MMC message: len = " << len << "\n\t";
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for (size_t i = 0; i < len; i++) {
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cerr << hex << (int) msg[i] << dec << ' ';
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}
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cerr << endl;
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#endif
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if (_receive_device_id != 0x7f && msg[1] != 0x7f && msg[1] != _receive_device_id) {
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return;
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}
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mmc_msg = &msg[3];
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len -= 3;
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do {
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single_byte = false;
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/* this works for all non-single-byte "counted"
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commands. we set it to 1 for the exceptions.
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*/
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std::map<int,string>::iterator x = mmc_cmd_map.find ((int)mmc_msg[0]);
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string cmdname = "unknown";
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if (x != mmc_cmd_map.end()) {
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cmdname = (*x).second;
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}
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#if 0
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cerr << "+++ MMC type "
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<< hex
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<< ((int) *mmc_msg)
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<< dec
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<< " \"" << cmdname << "\" "
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<< " len = " << len
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<< endl;
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#endif
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switch (*mmc_msg) {
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/* SINGLE-BYTE, UNCOUNTED COMMANDS */
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case cmdStop:
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Stop (*this);
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single_byte = true;
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break;
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case cmdPlay:
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Play (*this);
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single_byte = true;
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break;
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case cmdDeferredPlay:
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DeferredPlay (*this);
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single_byte = true;
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break;
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case cmdFastForward:
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FastForward (*this);
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single_byte = true;
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break;
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case cmdRewind:
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Rewind (*this);
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single_byte = true;
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break;
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case cmdRecordStrobe:
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RecordStrobe (*this);
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single_byte = true;
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break;
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case cmdRecordExit:
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RecordExit (*this);
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single_byte = true;
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break;
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case cmdRecordPause:
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RecordPause (*this);
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single_byte = true;
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break;
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case cmdPause:
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Pause (*this);
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single_byte = true;
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break;
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case cmdEject:
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Eject (*this);
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single_byte = true;
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break;
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case cmdChase:
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Chase (*this);
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single_byte = true;
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break;
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case cmdCommandErrorReset:
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CommandErrorReset (*this);
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single_byte = true;
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break;
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case cmdMmcReset:
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MmcReset (*this);
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single_byte = true;
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break;
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case cmdIllegalMackieJogStart:
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JogStart (*this);
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single_byte = true;
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break;
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case cmdIllegalMackieJogStop:
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JogStop (*this);
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single_byte = true;
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break;
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/* END OF SINGLE-BYTE, UNCOUNTED COMMANDS */
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case cmdMaskedWrite:
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do_masked_write (mmc_msg, len);
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break;
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case cmdLocate:
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do_locate (mmc_msg, len);
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break;
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case cmdShuttle:
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do_shuttle (mmc_msg, len);
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break;
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case cmdStep:
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do_step (mmc_msg, len);
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break;
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case cmdWrite:
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case cmdRead:
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case cmdUpdate:
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case cmdVariablePlay:
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case cmdSearch:
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case cmdAssignSystemMaster:
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case cmdGeneratorCommand:
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case cmdMtcCommand:
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case cmdMove:
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case cmdAdd:
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case cmdSubtract:
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case cmdDropFrameAdjust:
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case cmdProcedure:
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case cmdEvent:
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case cmdGroup:
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case cmdCommandSegment:
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case cmdDeferredVariablePlay:
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case cmdRecordStrobeVariable:
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case cmdWait:
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case cmdResume:
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error << "MIDI::MachineControl: unimplemented MMC command "
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<< hex << (int) *mmc_msg << dec
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<< endmsg;
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break;
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default:
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error << "MIDI::MachineControl: unknown MMC command "
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<< hex << (int) *mmc_msg << dec
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<< endmsg;
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break;
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}
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/* increase skiplen to cover the command byte and
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count byte (if it existed).
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*/
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if (!single_byte) {
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skiplen = mmc_msg[1] + 2;
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} else {
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skiplen = 1;
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}
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if (len <= skiplen) {
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break;
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}
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mmc_msg += skiplen;
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len -= skiplen;
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} while (len > 1); /* skip terminating EOX byte */
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}
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int
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MachineControl::do_masked_write (MIDI::byte *msg, size_t len)
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{
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/* return the number of bytes "consumed" */
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int retval = msg[1] + 2; /* bytes following + 2 */
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switch (msg[2]) {
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case 0x4f: /* Track Record Ready Status */
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write_track_status (&msg[3], len - 3, msg[2]);
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break;
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case 0x62: /* track mute */
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write_track_status (&msg[3], len - 3, msg[2]);
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break;
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default:
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warning << "MIDI::MachineControl: masked write to "
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<< hex << (int) msg[2] << dec
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<< " not implemented"
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<< endmsg;
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}
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return retval;
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}
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void
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MachineControl::write_track_status (MIDI::byte *msg, size_t /*len*/, MIDI::byte reg)
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{
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size_t n;
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ssize_t base_track;
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/* Bits 0-4 of the first byte are for special tracks:
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bit 0: video
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bit 1: reserved
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bit 2: time code
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bit 3: aux track a
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bit 4: aux track b
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the format of the message (its an MMC Masked Write) is:
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0x41 Command Code
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<count> byte count of following data
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<name> byte value of the field being written
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<byte #> byte number of target byte in the
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bitmap being written to
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<mask> ones in the mask indicate which bits will be changed
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<data> new data for the byte being written
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by the time this code is executing, msg[0] is the
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byte number of the target byte. if its zero, we
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are writing to a special byte in the standard
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track bitmap, in which the first 5 bits are
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special. hence the bits for tracks 1 + 2 are bits
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5 and 6 of the first byte of the track
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bitmap. so:
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change track 1: msg[0] = 0; << first byte of track bitmap
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msg[1] = 0100000; << binary: bit 5 set
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change track 2: msg[0] = 0; << first byte of track bitmap
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msg[1] = 1000000; << binary: bit 6 set
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change track 3: msg[0] = 1; << second byte of track bitmap
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msg[1] = 0000001; << binary: bit 0 set
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the (msg[0] * 8) - 6 computation is an attempt to
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extract the value of the first track: ie. the one
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that would be indicated by bit 0 being set.
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so, if msg[0] = 0, msg[1] = 0100000 (binary),
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what happens is that base_track = -5, but by the
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time we check the correct bit, n = 5, and so the
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computed track for the status change is 0 (first
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track).
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if msg[0] = 1, then the base track for any change is 2 (the third track), and so on.
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*/
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/* XXX check needed to make sure we don't go outside the
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supported number of tracks.
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*/
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if (msg[0] == 0) {
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base_track = -5;
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} else {
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base_track = (msg[0] * 8) - 6;
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}
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for (n = 0; n < 7; n++) {
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if (msg[1] & (1<<n)) {
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/* Only touch tracks that have the "mask"
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bit set.
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*/
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bool val = (msg[2] & (1<<n));
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switch (reg) {
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case 0x4f:
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trackRecordStatus[base_track+n] = val;
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TrackRecordStatusChange (*this, base_track+n, val);
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break;
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case 0x62:
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trackMute[base_track+n] = val;
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TrackMuteChange (*this, base_track+n, val);
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break;
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}
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}
|
|
|
|
}
|
|
}
|
|
|
|
int
|
|
MachineControl::do_locate (MIDI::byte *msg, size_t /*msglen*/)
|
|
{
|
|
if (msg[2] == 0) {
|
|
warning << "MIDI::MMC: locate [I/F] command not supported"
|
|
<< endmsg;
|
|
return 0;
|
|
}
|
|
|
|
/* regular "target" locate command */
|
|
|
|
Locate (*this, &msg[3]);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
MachineControl::do_step (MIDI::byte *msg, size_t /*msglen*/)
|
|
{
|
|
int steps = msg[2] & 0x3f;
|
|
|
|
if (msg[2] & 0x40) {
|
|
steps = -steps;
|
|
}
|
|
|
|
Step (*this, steps);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
MachineControl::do_shuttle (MIDI::byte *msg, size_t /*msglen*/)
|
|
{
|
|
size_t forward;
|
|
byte sh = msg[2];
|
|
byte sm = msg[3];
|
|
byte sl = msg[4];
|
|
size_t left_shift;
|
|
size_t integral;
|
|
size_t fractional;
|
|
float shuttle_speed;
|
|
|
|
if (sh & (1<<6)) {
|
|
forward = false;
|
|
} else {
|
|
forward = true;
|
|
}
|
|
|
|
left_shift = (sh & 0x38);
|
|
|
|
integral = ((sh & 0x7) << left_shift) | (sm >> (7 - left_shift));
|
|
fractional = ((sm << left_shift) << 7) | sl;
|
|
|
|
shuttle_speed = integral +
|
|
((float)fractional / (1 << (14 - left_shift)));
|
|
|
|
Shuttle (*this, shuttle_speed, forward);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
MachineControl::enable_send (bool yn)
|
|
{
|
|
_enable_send = yn;
|
|
}
|
|
|
|
/** Send a MMC command to a the MMC port.
|
|
* @param c command.
|
|
*/
|
|
void
|
|
MachineControl::send (MachineControlCommand const & c, timestamp_t when)
|
|
{
|
|
if (_output_port == 0 || !_enable_send) {
|
|
// cerr << "Not delivering MMC " << _mmc->port() << " - " << session_send_mmc << endl;
|
|
return;
|
|
}
|
|
|
|
MIDI::byte buffer[32];
|
|
MIDI::byte* b = c.fill_buffer (this, buffer);
|
|
|
|
if (_output_port->midimsg (buffer, b - buffer, when)) {
|
|
error << "MMC: cannot send command" << endmsg;
|
|
}
|
|
}
|
|
|
|
void
|
|
MachineControl::spp_start ()
|
|
{
|
|
SPPStart (); /* EMIT SIGNAL */
|
|
}
|
|
|
|
void
|
|
MachineControl::spp_continue ()
|
|
{
|
|
SPPContinue (); /* EMIT SIGNAL */
|
|
}
|
|
|
|
void
|
|
MachineControl::spp_stop ()
|
|
{
|
|
SPPStop (); /* EMIT SIGNAL */
|
|
}
|
|
|
|
MachineControlCommand::MachineControlCommand (MachineControl::Command c)
|
|
: _command (c)
|
|
{
|
|
|
|
}
|
|
|
|
MachineControlCommand::MachineControlCommand (Timecode::Time t)
|
|
: _command (MachineControl::cmdLocate)
|
|
, _time (t)
|
|
{
|
|
|
|
}
|
|
|
|
MIDI::byte *
|
|
MachineControlCommand::fill_buffer (MachineControl* mmc, MIDI::byte* b) const
|
|
{
|
|
*b++ = 0xf0; // SysEx
|
|
*b++ = 0x7f; // Real-time SysEx ID for MMC
|
|
*b++ = mmc->send_device_id();
|
|
*b++ = 0x6; // MMC command
|
|
|
|
*b++ = _command;
|
|
|
|
if (_command == MachineControl::cmdLocate) {
|
|
*b++ = 0x6; // byte count
|
|
*b++ = 0x1; // "TARGET" subcommand
|
|
*b++ = _time.hours % 24;
|
|
*b++ = _time.minutes;
|
|
*b++ = _time.seconds;
|
|
*b++ = _time.frames;
|
|
*b++ = _time.subframes;
|
|
}
|
|
|
|
*b++ = 0xf7;
|
|
|
|
return b;
|
|
}
|
|
|