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livetrax/libs/backends/wavesaudio/waves_midi_event.cc

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/*
Copyright (C) 2013 Waves Audio Ltd.
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 "pbd/debug.h"
#include "pbd/compose.h"
#include "memory.h"
#include "waves_midi_event.h"
using namespace ARDOUR;
using namespace PBD;
WavesMidiEvent::WavesMidiEvent (PmTimestamp timestamp)
: _size (0)
, _timestamp (timestamp)
, _data (NULL)
, _state (INCOMPLETE)
{
}
WavesMidiEvent::WavesMidiEvent (PmTimestamp timestamp, const uint8_t* data, size_t datalen)
: _size (datalen)
, _timestamp (timestamp)
, _data (data && datalen ? new uint8_t[ (datalen < sizeof (PmMessage)) ? sizeof (PmMessage) : datalen] : NULL)
, _state (data && datalen ? COMPLETE : BROKEN)
{
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ( "WavesMidiEvent::WavesMidiEvent (const WavesMidiEvent& source) : Size=%1---%2\n", _size, datalen));
if (_state == COMPLETE) {
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ( "\t\t\t Allocated Size=%1\n", ((datalen < sizeof (PmMessage)) ? sizeof (PmMessage) : datalen)));
memcpy (_data, data, datalen);
#ifndef NDEBUG
if (DEBUG_ENABLED (DEBUG::WavesMIDI)) {
DEBUG_STR_DECL(a);
for (size_t i=0; i < datalen; ++i) {
DEBUG_STR_APPEND(a,std::hex);
DEBUG_STR_APPEND(a,"0x");
DEBUG_STR_APPEND(a,(int)data[i]);
DEBUG_STR_APPEND(a,' ');
}
DEBUG_STR_APPEND(a,'\n');
DEBUG_TRACE (DEBUG::WavesMIDI, DEBUG_STR(a).str());
}
#endif
}
}
WavesMidiEvent::WavesMidiEvent (const WavesMidiEvent& source)
: _size (source.size ())
, _timestamp (source.timestamp ())
, _data ((source.size () && source.const_data ()) ? new uint8_t[ (source.size () < sizeof (PmMessage)) ? sizeof (PmMessage) : source.size ()] : NULL)
, _state (source.state () )
{
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ( "WavesMidiEvent::WavesMidiEvent (const WavesMidiEvent& source) : Size=%1---%2\n", _size, source.size ()));
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ( "\t\t\t Allocated Size=%1\n", ((source.size () < sizeof (PmMessage)) ? sizeof (PmMessage) : source.size ())));
if (_data && source.const_data ()) {
memcpy (_data, source.const_data (), source.size ());
#ifndef NDEBUG
if (DEBUG_ENABLED (DEBUG::WavesMIDI)) {
DEBUG_STR_DECL(a);
for (size_t i=0; i < source.size(); ++i) {
DEBUG_STR_APPEND(a,std::hex);
DEBUG_STR_APPEND(a,"0x");
DEBUG_STR_APPEND(a,(int)source.const_data()[i]);
DEBUG_STR_APPEND(a,' ');
}
DEBUG_STR_APPEND(a,'\n');
DEBUG_TRACE (DEBUG::WavesMIDI, DEBUG_STR(a).str());
}
#endif
}
}
WavesMidiEvent::~WavesMidiEvent ()
{
delete _data;
}
WavesMidiEvent *WavesMidiEvent::append_data (const PmEvent &midi_event)
{
switch ( _state ) {
case INCOMPLETE:
break;
default:
DEBUG_TRACE (DEBUG::WavesMIDI, "WavesMidiEvent::append_data (): NO case INCOMPLETE\n");
_state = BROKEN;
return NULL;
}
size_t message_size = _midi_message_size (midi_event.message);
uint8_t message_status = Pm_MessageStatus (midi_event.message);
if (_data == NULL) { // This is a first event to add
bool sysex = (message_status == SYSEX);
_data = new unsigned char [sysex ? PM_DEFAULT_SYSEX_BUFFER_SIZE : sizeof (PmMessage)];
if (!sysex)
{
DEBUG_TRACE (DEBUG::WavesMIDI, "WavesMidiEvent::append_data (): SHORT MSG\n");
* (PmMessage*)_data = 0;
switch (message_size) {
case 1:
case 2:
case 3:
_size = message_size;
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ( "WavesMidiEvent::append_data (): size = %1\n", _size));
break;
default:
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ( "WavesMidiEvent::append_data (): WRONG MESSAGE SIZE (%1 not %2) %3 [%4 %5 %6 %7] %8\n",
message_size,
std::hex,
(int) ((unsigned char*)&midi_event)[0],
(int) ((unsigned char*)&midi_event)[1],
(int) ((unsigned char*)&midi_event)[2],
(int) ((unsigned char*)&midi_event)[3],
std::dec));
_state = BROKEN;
return NULL;
}
memcpy (_data, &midi_event.message, _size);
_state = COMPLETE;
DEBUG_TRACE (DEBUG::WavesMIDI, string_compose ( "\t\t\t size = %1\n", _size));
return NULL;
}
}
// Now let's parse to sysex msg
if (message_status >= REAL_TIME_FIRST) { // Nested Real Time MIDI event
WavesMidiEvent *waves_midi_message = new WavesMidiEvent (midi_event.timestamp);
waves_midi_message->append_data (midi_event);
return waves_midi_message;
}
if (message_status >= STATUS_FIRST && (message_status != EOX) && _size) { // Certainly it's a broken SYSEX case
WavesMidiEvent *waves_midi_message = new WavesMidiEvent (midi_event.timestamp);
waves_midi_message->append_data (midi_event);
return waves_midi_message;
}
const uint8_t* source_data ((uint8_t*)&midi_event.message);
for (size_t i = 0; i < sizeof (midi_event.message); ++i) {
_data[_size] = source_data[i];
_size++;
if (source_data[i] == EOX) { // Ended SYSEX message
_state = COMPLETE;
return NULL;
}
}
return NULL;
}
size_t WavesMidiEvent::_midi_message_size (PmMessage midi_message)
{
static int high_lengths[] = {
1, 1, 1, 1, 1, 1, 1, 1, /* 0x00 through 0x70 */
3, 3, 3, 3, 2, 2, 3, 1 /* 0x80 through 0xf0 */
};
static int low_lengths[] = {
1, 2, 3, 2, 1, 1, 1, 1, /* 0xf0 through 0xf7 */
1, 1, 1, 1, 1, 1, 1, 1 /* 0xf8 through 0xff */
};
int midi_message_status = Pm_MessageStatus (midi_message);
if (midi_message_status < STATUS_FIRST) {
return sizeof (midi_message);
}
int high = midi_message_status >> 4;
int low = midi_message_status & 0xF;
return (high != 0xF) ? high_lengths[high] : low_lengths[low];
}