summaryrefslogtreecommitdiff
path: root/libs/ardour/midi_buffer.cc
diff options
context:
space:
mode:
authorDoug McLain <doug@nostar.net>2008-06-02 05:02:28 +0000
committerDoug McLain <doug@nostar.net>2008-06-02 05:02:28 +0000
commit9c0d7d72d70082a54f823cd44c0ccda5da64bb6f (patch)
tree96ec400b83b8c1c06852b1936f684b5fbcd47a79 /libs/ardour/midi_buffer.cc
parent2f3f697bb8e185eb43c2c50b4eefc2bcb937f269 (diff)
remove empty sigc++2 directory
git-svn-id: svn://localhost/ardour2/branches/3.0@3432 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/midi_buffer.cc')
-rw-r--r--libs/ardour/midi_buffer.cc282
1 files changed, 0 insertions, 282 deletions
diff --git a/libs/ardour/midi_buffer.cc b/libs/ardour/midi_buffer.cc
deleted file mode 100644
index 1530babe34..0000000000
--- a/libs/ardour/midi_buffer.cc
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- Copyright (C) 2006-2007 Paul Davis
- Author: Dave Robillard
-
- 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>
-#include <ardour/midi_buffer.h>
-
-#ifdef __x86_64__
-static const int CPU_CACHE_ALIGN = 64;
-#else
-static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */
-#endif
-
-using namespace std;
-using namespace ARDOUR;
-
-
-// FIXME: mirroring for MIDI buffers?
-MidiBuffer::MidiBuffer(size_t capacity)
- : Buffer(DataType::MIDI, capacity)
- , _events(0)
- , _data(0)
-// , _owns_data(false)
-{
- if (capacity) {
- resize (_capacity);
- silence(_capacity);
- }
-}
-
-MidiBuffer::~MidiBuffer()
-{
- if (_events) {
- free(_events);
- }
- if (_data) {
- free(_data);
- }
-}
-
-void
-MidiBuffer::resize (size_t size)
-{
- assert(size > 0);
-
- if (size < _capacity) {
- return;
- }
-
- if (_data) {
- free (_data);
- }
-
- if (_events) {
- free (_events);
- }
-
- _size = 0;
- _capacity = size;
-
-#ifdef NO_POSIX_MEMALIGN
- _events = (MIDI::Event *) malloc(sizeof(MIDI::Event) * _capacity);
- _data = (uint8_t *) malloc(sizeof(uint8_t) * _capacity * MAX_EVENT_SIZE);
-#else
- posix_memalign((void**)&_events, CPU_CACHE_ALIGN, sizeof(MIDI::Event) * _capacity);
- posix_memalign((void**)&_data, CPU_CACHE_ALIGN, sizeof(uint8_t) * _capacity * MAX_EVENT_SIZE);
-#endif
- assert(_data);
- assert(_events);
-}
-
-void
-MidiBuffer::copy(const MidiBuffer& copy)
-{
- assert(_capacity >= copy._capacity);
- _size = 0;
-
- for (size_t i = 0; i < copy.size(); ++i)
- push_back(copy[i]);
-}
-
-
-/** Read events from @a src starting at time @a offset into the START of this buffer, for
- * time direction @a nframes. Relative time, where 0 = start of buffer.
- *
- * Note that offset and nframes refer to sample time, NOT buffer offsets or event counts.
- */
-void
-MidiBuffer::read_from(const Buffer& src, nframes_t nframes, nframes_t offset)
-{
- assert(src.type() == DataType::MIDI);
- assert(&src != this);
-
- const MidiBuffer& msrc = (MidiBuffer&)src;
-
- assert(_capacity >= msrc.size());
-
- clear();
- assert(_size == 0);
-
- // FIXME: slow
- for (size_t i=0; i < msrc.size(); ++i) {
- const MIDI::Event& ev = msrc[i];
- if (ev.time() >= offset && ev.time() < offset+nframes) {
- //cout << "MidiBuffer::read_from got event, " << int(ev.type()) << " time: " << ev.time() << " buffer size: " << _size << endl;
- push_back(ev);
- } else {
- cerr << "MidiBuffer event out of range, " << ev.time() << endl;
- }
- }
-
- _silent = src.silent();
-}
-
-
-/** Push an event into the buffer.
- *
- * Note that the raw MIDI pointed to by ev will be COPIED and unmodified.
- * That is, the caller still owns it, if it needs freeing it's Not My Problem(TM).
- * Realtime safe.
- * @return false if operation failed (not enough room)
- */
-bool
-MidiBuffer::push_back(const MIDI::Event& ev)
-{
- if (_size == _capacity)
- return false;
-
- uint8_t* const write_loc = _data + (_size * MAX_EVENT_SIZE);
-
- memcpy(write_loc, ev.buffer(), ev.size());
- _events[_size] = ev;
- _events[_size].set_buffer(ev.size(), write_loc, false);
- ++_size;
-
- //cerr << "MidiBuffer: pushed, size = " << _size << endl;
-
- _silent = false;
-
- return true;
-}
-
-
-/** Push an event into the buffer.
- *
- * Note that the raw MIDI pointed to by ev will be COPIED and unmodified.
- * That is, the caller still owns it, if it needs freeing it's Not My Problem(TM).
- * Realtime safe.
- * @return false if operation failed (not enough room)
- */
-bool
-MidiBuffer::push_back(const jack_midi_event_t& ev)
-{
- if (_size == _capacity)
- return false;
-
- uint8_t* const write_loc = _data + (_size * MAX_EVENT_SIZE);
-
- memcpy(write_loc, ev.buffer, ev.size);
- _events[_size].time() = (double)ev.time;
- _events[_size].set_buffer(ev.size, write_loc, false);
- ++_size;
-
- //cerr << "MidiBuffer: pushed, size = " << _size << endl;
-
- _silent = false;
-
- return true;
-}
-
-
-/** Reserve space for a new event in the buffer.
- *
- * This call is for copying MIDI directly into the buffer, the data location
- * (of sufficient size to write \a size bytes) is returned, or 0 on failure.
- * This call MUST be immediately followed by a write to the returned data
- * location, or the buffer will be corrupted and very nasty things will happen.
- */
-uint8_t*
-MidiBuffer::reserve(double time, size_t size)
-{
- if (size > MAX_EVENT_SIZE) {
- cerr << "WARNING: Failed to reserve " << size << " bytes for event";
- return 0;
- }
-
- if (_size == _capacity)
- return 0;
-
- uint8_t* const write_loc = _data + (_size * MAX_EVENT_SIZE);
-
- _events[_size].time() = time;
- _events[_size].set_buffer(size, write_loc, false);
- ++_size;
-
- //cerr << "MidiBuffer: reserved, size = " << _size << endl;
-
- _silent = false;
-
- return write_loc;
-}
-
-
-void
-MidiBuffer::silence(nframes_t dur, nframes_t offset)
-{
- // FIXME use parameters
- if (offset != 0)
- cerr << "WARNING: MidiBuffer::silence w/ offset != 0 (not implemented)" << endl;
-
- memset(_events, 0, sizeof(MIDI::Event) * _capacity);
- memset(_data, 0, sizeof(uint8_t) * _capacity * MAX_EVENT_SIZE);
- _size = 0;
- _silent = true;
-}
-
-
-/** Clear, and merge \a a and \a b into this buffer.
- *
- * FIXME: This is slow.
- *
- * \return true if complete merge was successful
- */
-bool
-MidiBuffer::merge(const MidiBuffer& a, const MidiBuffer& b)
-{
- _size = 0;
-
- // Die if a merge isn't necessary as it's expensive
- assert(a.size() > 0 && b.size() > 0);
-
- size_t a_index = 0;
- size_t b_index = 0;
- size_t count = a.size() + b.size();
-
- while (count > 0 && a_index < a.size() && b_index < b.size()) {
-
- if (size() == capacity()) {
- cerr << "WARNING: MIDI buffer overrun, events lost!" << endl;
- return false;
- }
-
- if (a_index == a.size()) {
- push_back(a[a_index]);
- ++a_index;
- } else if (b_index == b.size()) {
- push_back(b[b_index]);
- ++b_index;
- } else {
- const MIDI::Event& a_ev = a[a_index];
- const MIDI::Event& b_ev = b[b_index];
-
- if (a_ev.time() <= b_ev.time()) {
- push_back(a_ev);
- ++a_index;
- } else {
- push_back(b_ev);
- ++b_index;
- }
- }
-
- --count;
- }
-
- return true;
-}
-