2 Copyright (C) 2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2 of the License, or (at your option)
9 This program is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation, Inc.,
16 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "ardour/buffer.h"
22 #include "ardour/buffer_set.h"
23 #include "ardour/lv2_event_buffer.h"
24 #include "ardour/lv2_plugin.h"
25 #include "ardour/midi_buffer.h"
26 #include "ardour/port.h"
27 #include "ardour/port_set.h"
28 #include "ardour/audioengine.h"
32 /** Create a new, empty BufferSet */
33 BufferSet::BufferSet()
36 for (size_t i=0; i < DataType::num_types; ++i) {
37 _buffers.push_back(BufferVec());
44 BufferSet::~BufferSet()
49 /** Destroy all contained buffers.
55 for (std::vector<BufferVec>::iterator i = _buffers.begin(); i != _buffers.end(); ++i) {
56 for (BufferVec::iterator j = (*i).begin(); j != (*i).end(); ++j) {
67 /** Make this BufferSet a direct mirror of a PortSet's buffers.
70 BufferSet::attach_buffers(PortSet& ports, nframes_t nframes, nframes_t offset)
74 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
75 _buffers.push_back(BufferVec());
76 BufferVec& v = _buffers[*t];
78 for (PortSet::iterator p = ports.begin(*t); p != ports.end(*t); ++p) {
79 assert(p->type() == *t);
80 v.push_back(&(p->get_buffer(nframes, offset)));
84 _count = ports.count();
89 /** Ensure that there are @a num_buffers buffers of type @a type available,
90 * each of size at least @a buffer_size
93 BufferSet::ensure_buffers(DataType type, size_t num_buffers, size_t buffer_capacity)
95 assert(type != DataType::NIL);
96 assert(type < _buffers.size());
101 // The vector of buffers of the type we care about
102 BufferVec& bufs = _buffers[type];
104 // If we're a mirror just make sure we're ok
106 assert(_count.get(type) >= num_buffers);
107 assert(bufs[0]->type() == type);
111 // If there's not enough or they're too small, just nuke the whole thing and
112 // rebuild it (so I'm lazy..)
113 if (bufs.size() < num_buffers
114 || (bufs.size() > 0 && bufs[0]->capacity() < buffer_capacity)) {
117 for (BufferVec::iterator i = bufs.begin(); i != bufs.end(); ++i) {
123 for (size_t i = 0; i < num_buffers; ++i) {
124 bufs.push_back(Buffer::create(type, buffer_capacity));
127 _available.set(type, num_buffers);
130 // Ensure enough low level MIDI format buffers are available for conversion
131 // in both directions (input & output, out-of-place)
132 if (type == DataType::MIDI && _lv2_buffers.size() < _buffers[type].size() * 2) {
133 while (_lv2_buffers.size() < _buffers[type].size() * 2) {
134 _lv2_buffers.push_back(std::make_pair(false, new LV2EventBuffer(buffer_capacity)));
139 assert(bufs[0]->type() == type);
140 assert(bufs.size() >= num_buffers);
141 assert(bufs.size() == _available.get(type));
142 assert(bufs[0]->capacity() >= buffer_capacity);
145 /** Get the capacity (size) of the available buffers of the given type.
147 * All buffers of a certain type always have the same capacity.
150 BufferSet::buffer_capacity(DataType type) const
152 assert(_available.get(type) > 0);
153 return _buffers[type][0]->capacity();
157 BufferSet::get(DataType type, size_t i)
159 assert(i <= _count.get(type));
160 return *_buffers[type][i];
164 BufferSet::get_lv2_midi(bool input, size_t i)
166 MidiBuffer& mbuf = get_midi(i);
167 LV2Buffers::value_type b = _lv2_buffers.at(i * 2 + (input ? 0 : 1));
168 LV2EventBuffer* ebuf = b.second;
172 for (MidiBuffer::iterator e = mbuf.begin(); e != mbuf.end(); ++e) {
173 const Evoral::MIDIEvent<nframes_t> ev(*e, false);
174 uint32_t type = LV2Plugin::midi_event_type();
175 ebuf->append(ev.time(), 0, type, ev.size(), ev.buffer());
182 BufferSet::flush_lv2_midi(bool input, size_t i)
184 MidiBuffer& mbuf = get_midi(i);
185 LV2Buffers::value_type b = _lv2_buffers.at(i * 2 + (input ? 0 : 1));
186 LV2EventBuffer* ebuf = b.second;
189 for (ebuf->rewind(); ebuf->is_valid(); ebuf->increment()) {
195 ebuf->get_event(&frames, &subframes, &type, &size, &data);
196 mbuf.push_back(frames, size, data);
200 // FIXME: make 'in' const
202 BufferSet::read_from (BufferSet& in, nframes_t nframes)
204 assert(available() >= in.count());
206 // Copy all buffers 1:1
207 for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
208 BufferSet::iterator o = begin(*t);
209 for (BufferSet::iterator i = in.begin(*t); i != in.end(*t); ++i, ++o) {
210 o->read_from (*i, nframes);
214 set_count(in.count());
217 } // namespace ARDOUR