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/*
Copyright (C) 2006 Paul Davis
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 <algorithm>
#include "ardour/buffer.h"
#include "ardour/buffer_set.h"
#include "ardour/midi_buffer.h"
#include "ardour/port.h"
#include "ardour/port_set.h"
#include "ardour/audioengine.h"
#ifdef HAVE_SLV2
#include "ardour/lv2_plugin.h"
#include "ardour/lv2_event_buffer.h"
#endif
namespace ARDOUR {
/** Create a new, empty BufferSet */
BufferSet::BufferSet()
: _is_mirror(false)
, _is_silent(false)
{
for (size_t i=0; i < DataType::num_types; ++i) {
_buffers.push_back(BufferVec());
}
_count.reset();
_available.reset();
}
BufferSet::~BufferSet()
{
clear();
}
/** Destroy all contained buffers.
*/
void
BufferSet::clear()
{
if (!_is_mirror) {
for (std::vector<BufferVec>::iterator i = _buffers.begin(); i != _buffers.end(); ++i) {
for (BufferVec::iterator j = (*i).begin(); j != (*i).end(); ++j) {
delete *j;
}
(*i).clear();
}
}
_buffers.clear();
_count.reset();
_available.reset();
}
/** Make this BufferSet a direct mirror of a PortSet's buffers.
*/
void
BufferSet::attach_buffers(PortSet& ports, nframes_t nframes, nframes_t offset)
{
clear();
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
_buffers.push_back(BufferVec());
BufferVec& v = _buffers[*t];
for (PortSet::iterator p = ports.begin(*t); p != ports.end(*t); ++p) {
assert(p->type() == *t);
v.push_back(&(p->get_buffer(nframes, offset)));
}
}
_count = ports.count();
_available = ports.count();
_is_mirror = true;
}
/** Ensure that there are @a num_buffers buffers of type @a type available,
* each of size at least @a buffer_size
*/
void
BufferSet::ensure_buffers(DataType type, size_t num_buffers, size_t buffer_capacity)
{
assert(type != DataType::NIL);
assert(type < _buffers.size());
if (num_buffers == 0) {
return;
}
// The vector of buffers of the type we care about
BufferVec& bufs = _buffers[type];
// If we're a mirror just make sure we're ok
if (_is_mirror) {
assert(_count.get(type) >= num_buffers);
assert(bufs[0]->type() == type);
return;
}
// If there's not enough or they're too small, just nuke the whole thing and
// rebuild it (so I'm lazy..)
if (bufs.size() < num_buffers
|| (bufs.size() > 0 && bufs[0]->capacity() < buffer_capacity)) {
// Nuke it
for (BufferVec::iterator i = bufs.begin(); i != bufs.end(); ++i) {
delete (*i);
}
bufs.clear();
// Rebuild it
for (size_t i = 0; i < num_buffers; ++i) {
bufs.push_back(Buffer::create(type, buffer_capacity));
}
_available.set(type, num_buffers);
}
#ifdef HAVE_SLV2
// Ensure enough low level MIDI format buffers are available for conversion
// in both directions (input & output, out-of-place)
if (type == DataType::MIDI && _lv2_buffers.size() < _buffers[type].size() * 2 + 1) {
while (_lv2_buffers.size() < _buffers[type].size() * 2) {
_lv2_buffers.push_back(std::make_pair(false, new LV2EventBuffer(buffer_capacity)));
}
}
#endif
// Post-conditions
assert(bufs[0]->type() == type);
assert(bufs.size() >= num_buffers);
assert(bufs.size() == _available.get(type));
assert(bufs[0]->capacity() >= buffer_capacity);
}
/** Get the capacity (size) of the available buffers of the given type.
*
* All buffers of a certain type always have the same capacity.
*/
size_t
BufferSet::buffer_capacity(DataType type) const
{
assert(_available.get(type) > 0);
return _buffers[type][0]->capacity();
}
Buffer&
BufferSet::get(DataType type, size_t i)
{
assert(i < _available.get(type));
return *_buffers[type][i];
}
#ifdef HAVE_SLV2
LV2EventBuffer&
BufferSet::get_lv2_midi(bool input, size_t i)
{
MidiBuffer& mbuf = get_midi(i);
LV2Buffers::value_type b = _lv2_buffers.at(i * 2 + (input ? 0 : 1));
LV2EventBuffer* ebuf = b.second;
ebuf->reset();
if (input) {
for (MidiBuffer::iterator e = mbuf.begin(); e != mbuf.end(); ++e) {
const Evoral::MIDIEvent<nframes_t> ev(*e, false);
uint32_t type = LV2Plugin::midi_event_type();
ebuf->append(ev.time(), 0, type, ev.size(), ev.buffer());
}
}
return *ebuf;
}
void
BufferSet::flush_lv2_midi(bool input, size_t i)
{
MidiBuffer& mbuf = get_midi(i);
LV2Buffers::value_type b = _lv2_buffers.at(i * 2 + (input ? 0 : 1));
LV2EventBuffer* ebuf = b.second;
mbuf.silence(0, 0);
for (ebuf->rewind(); ebuf->is_valid(); ebuf->increment()) {
uint32_t frames;
uint32_t subframes;
uint16_t type;
uint16_t size;
uint8_t* data;
ebuf->get_event(&frames, &subframes, &type, &size, &data);
mbuf.push_back(frames, size, data);
}
}
#endif
// FIXME: make 'in' const
void
BufferSet::read_from (BufferSet& in, nframes_t nframes)
{
assert(available() >= in.count());
// Copy all buffers 1:1
for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
BufferSet::iterator o = begin(*t);
for (BufferSet::iterator i = in.begin(*t); i != in.end(*t); ++i, ++o) {
o->read_from (*i, nframes);
}
}
set_count(in.count());
}
} // namespace ARDOUR
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