/*
- Copyright (C) 2006 Paul Davis
-
+ 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.
#ifndef __ardour_buffer_set_h__
#define __ardour_buffer_set_h__
+#ifdef WAF_BUILD
+#include "libardour-config.h"
+#endif
+
+#include <cassert>
#include <vector>
-#include <ardour/buffer.h>
-#include <ardour/chan_count.h>
-#include <ardour/data_type.h>
-#include <ardour/port_set.h>
+#include "ardour/chan_count.h"
+#include "ardour/data_type.h"
+#include "ardour/libardour_visibility.h"
+#include "ardour/types.h"
+
+#if defined WINDOWS_VST_SUPPORT || defined LXVST_SUPPORT || defined MACVST_SUPPORT
+#include "evoral/Event.hpp"
+struct _VstEvents;
+typedef struct _VstEvents VstEvents;
+struct _VstMidiEvent;
+typedef struct _VstMidiEvent VstMidiEvent;
+#endif
+
+#ifdef LV2_SUPPORT
+typedef struct LV2_Evbuf_Impl LV2_Evbuf;
+#endif
namespace ARDOUR {
+class Buffer;
+class AudioBuffer;
+class MidiBuffer;
+class PortSet;
/** A set of buffers of various types.
*
* others the form of their output (eg what they did to the BufferSet).
* Setting the use counts is realtime safe.
*/
-class BufferSet
+class LIBARDOUR_API BufferSet
{
public:
- BufferSet(const PortSet& ports);
BufferSet();
~BufferSet();
void clear();
-
- void ensure_buffers(const ChanCount& chan_count, size_t buffer_capacity);
- void ensure_buffers(size_t num_buffers, DataType type, size_t buffer_capacity);
- // FIXME: add these
- //const ChanCount& available() const { return _count; }
- //ChanCount& available() { return _count; }
+ void attach_buffers (PortSet& ports);
+ void get_backend_port_addresses (PortSet &, framecnt_t);
+
+ /* the capacity here is a size_t and has a different interpretation depending
+ on the DataType of the buffers. for audio, its a frame count. for MIDI
+ its a byte count.
+ */
+
+ void ensure_buffers(DataType type, size_t num_buffers, size_t buffer_capacity);
+ void ensure_buffers(const ChanCount& chns, size_t buffer_capacity);
+
+ const ChanCount& available() const { return _available; }
+ ChanCount& available() { return _available; }
const ChanCount& count() const { return _count; }
ChanCount& count() { return _count; }
- size_t available_buffers(DataType type) const;
+ void silence (framecnt_t nframes, framecnt_t offset);
+ bool is_mirror() const { return _is_mirror; }
+
+ void set_count(const ChanCount& count) { assert(count <= _available); _count = count; }
+
size_t buffer_capacity(DataType type) const;
- Buffer& buffer(DataType type, size_t i)
- {
- assert(i <= _count.get(type));
- return *_buffers[type.to_index()][i];
+ Buffer& get(DataType type, size_t i);
+ const Buffer& get(DataType type, size_t i) const;
+
+ AudioBuffer& get_audio(size_t i) {
+ return (AudioBuffer&)get(DataType::AUDIO, i);
+ }
+ const AudioBuffer& get_audio(size_t i) const {
+ return (const AudioBuffer&)get(DataType::AUDIO, i);
}
- AudioBuffer& audio_buffer(size_t i)
- {
- return (AudioBuffer&)buffer(DataType::AUDIO, i);
+ MidiBuffer& get_midi(size_t i) {
+ return (MidiBuffer&)get(DataType::MIDI, i);
}
- #if 0
- /** See PortInsert::run for an example of usage */
- class IndexSet {
- public:
- IndexSet() { reset(); }
-
- void reset() { _is[0] = 0; _is[1] = 0; }
+ const MidiBuffer& get_midi(size_t i) const {
+ return (const MidiBuffer&)get(DataType::MIDI, i);
+ }
+
+#ifdef LV2_SUPPORT
+ /** Get a MIDI buffer translated into an LV2 MIDI buffer for use with
+ * plugins. The index here corresponds directly to MIDI buffer numbers
+ * (i.e. the index passed to get_midi), translation back and forth will
+ * happen as needed. If old_api is true, the returned buffer will be in
+ * old event format. Otherwise it will be in new atom sequence format.
+ */
+ LV2_Evbuf* get_lv2_midi(bool input, size_t i, bool old_api);
+
+ /** ensure minimum size of LV2 Atom port buffer */
+ void ensure_lv2_bufsize(bool input, size_t i, size_t buffer_capacity);
- size_t index(DataType type) { return _is[type.to_index()]; }
- void increment(DataType type) { _is[type.to_index()] += 1; }
+ /** Flush modified LV2 event output buffers back to Ardour buffers */
+ void flush_lv2_midi(bool input, size_t i);
+
+ /** Forward plugin MIDI output to to Ardour buffers */
+ void forward_lv2_midi(LV2_Evbuf*, size_t, bool purge_ardour_buffer = true);
+#endif
+
+#if defined WINDOWS_VST_SUPPORT || defined LXVST_SUPPORT || defined MACVST_SUPPORT
+ VstEvents* get_vst_midi (size_t);
+#endif
+
+ void read_from(const BufferSet& in, framecnt_t nframes);
+ void read_from(const BufferSet& in, framecnt_t nframes, DataType);
+ void merge_from(const BufferSet& in, framecnt_t nframes);
+
+ template <typename BS, typename B>
+ class iterator_base {
+ public:
+ B& operator*() { return (B&)_set.get(_type, _index); }
+ B* operator->() { return &(B&)_set.get(_type, _index); }
+ iterator_base<BS,B>& operator++() { ++_index; return *this; } // yes, prefix only
+ bool operator==(const iterator_base<BS,B>& other) { return (_index == other._index); }
+ bool operator!=(const iterator_base<BS,B>& other) { return (_index != other._index); }
+ iterator_base<BS,B> operator=(const iterator_base<BS,B>& other) {
+ _set = other._set; _type = other._type; _index = other._index; return *this;
+ }
private:
- int _is[2];
+ friend class BufferSet;
+
+ iterator_base(BS& list, DataType type, size_t index)
+ : _set(list), _type(type), _index(index) {}
+
+ BS& _set;
+ DataType _type;
+ size_t _index;
};
- #endif
-
- const ChanCount& chan_count() const { return _count; }
-
+
+ typedef iterator_base<BufferSet, Buffer> iterator;
+ iterator begin(DataType type) { return iterator(*this, type, 0); }
+ iterator end(DataType type) { return iterator(*this, type, _count.get(type)); }
+
+ typedef iterator_base<const BufferSet, const Buffer> const_iterator;
+ const_iterator begin(DataType type) const { return const_iterator(*this, type, 0); }
+ const_iterator end(DataType type) const { return const_iterator(*this, type, _count.get(type)); }
+
+ typedef iterator_base<BufferSet, AudioBuffer> audio_iterator;
+ audio_iterator audio_begin() { return audio_iterator(*this, DataType::AUDIO, 0); }
+ audio_iterator audio_end() { return audio_iterator(*this, DataType::AUDIO, _count.n_audio()); }
+
+ typedef iterator_base<BufferSet, MidiBuffer> midi_iterator;
+ midi_iterator midi_begin() { return midi_iterator(*this, DataType::MIDI, 0); }
+ midi_iterator midi_end() { return midi_iterator(*this, DataType::MIDI, _count.n_midi()); }
+
private:
typedef std::vector<Buffer*> BufferVec;
- /// Vector of vectors, indexed by DataType::to_index()
+ /// Vector of vectors, indexed by DataType
std::vector<BufferVec> _buffers;
+#ifdef LV2_SUPPORT
+ /// LV2 MIDI buffers (for conversion to/from MIDI buffers)
+ typedef std::vector< std::pair<bool, LV2_Evbuf*> > LV2Buffers;
+ LV2Buffers _lv2_buffers;
+#endif
+
+#if defined WINDOWS_VST_SUPPORT || defined LXVST_SUPPORT || defined MACVST_SUPPORT
+ class VSTBuffer {
+ public:
+ VSTBuffer (size_t);
+ ~VSTBuffer ();
+
+ void clear ();
+ void push_back (Evoral::Event<framepos_t> const &);
+ VstEvents* events () const {
+ return _events;
+ }
+
+ private:
+ /* prevent copy construction */
+ VSTBuffer (VSTBuffer const &);
+
+ VstEvents* _events; /// the parent VSTEvents struct
+ VstMidiEvent* _midi_events; ///< storage area for VSTMidiEvents
+ size_t _capacity;
+ };
+
+ typedef std::vector<VSTBuffer*> VSTBuffers;
+ VSTBuffers _vst_buffers;
+#endif
+
/// Use counts (there may be more actual buffers than this)
ChanCount _count;
- /// Whether we (don't) 'own' the contained buffers (are a mirror of a PortSet)
+ /// Available counts (number of buffers actually allocated)
+ ChanCount _available;
+
+ /// False if we 'own' the contained buffers, if true we mirror a PortSet)
bool _is_mirror;
};
projects / ardour.git / blobdiff