X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Fmidi_buffer.h;h=8593a4ebb2ad778ce0ccfe7987e01f7383c6f1c5;hb=71a90399fe8561310b848fbfb8d28a65a395a6c1;hp=ecb48d9da9bb6fc6c3db4f7284a447774361e02c;hpb=eb296b2c957f574334fae2aefd8b863cf7631769;p=ardour.git diff --git a/libs/ardour/ardour/midi_buffer.h b/libs/ardour/ardour/midi_buffer.h index ecb48d9da9..8593a4ebb2 100644 --- a/libs/ardour/ardour/midi_buffer.h +++ b/libs/ardour/ardour/midi_buffer.h @@ -1,17 +1,17 @@ /* - Copyright (C) 2006 Paul Davis - Author: Dave Robillard - + Copyright (C) 2006-2009 Paul Davis + Author: David 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. @@ -20,44 +20,167 @@ #ifndef __ardour_midi_buffer_h__ #define __ardour_midi_buffer_h__ -#include +#include "evoral/midi_util.h" +#include "evoral/EventSink.hpp" + +#include "midi++/event.h" + +#include "ardour/buffer.h" +#include "ardour/parameter_types.h" namespace ARDOUR { /** Buffer containing 8-bit unsigned char (MIDI) data. */ -class MidiBuffer : public Buffer +class LIBARDOUR_API MidiBuffer : public Buffer, public Evoral::EventSink { public: + typedef framepos_t TimeType; + MidiBuffer(size_t capacity); - ~MidiBuffer(); - void silence(nframes_t dur, nframes_t offset=0); - - void read_from(const Buffer& src, nframes_t nframes, nframes_t offset); + void silence (framecnt_t nframes, framecnt_t offset = 0); + void read_from (const Buffer& src, framecnt_t nframes, framecnt_t dst_offset = 0, framecnt_t src_offset = 0); + void merge_from (const Buffer& src, framecnt_t nframes, framecnt_t dst_offset = 0, framecnt_t src_offset = 0); - bool push_back(const ARDOUR::MidiEvent& event); - bool push_back(const jack_midi_event_t& event); - Byte* reserve(double time, size_t size); - - const MidiEvent& operator[](size_t i) const { assert(i < _size); return _events[i]; } - MidiEvent& operator[](size_t i) { assert(i < _size); return _events[i]; } + void copy(const MidiBuffer& copy); - static size_t max_event_size() { return MAX_EVENT_SIZE; } + bool push_back(const Evoral::MIDIEvent& event); + bool push_back(TimeType time, size_t size, const uint8_t* data); -private: - // FIXME: Jack needs to tell us this - static const size_t MAX_EVENT_SIZE = 4; // bytes - - /* We use _size as "number of events", so the size of _data is - * (_size * MAX_EVENT_SIZE) + uint8_t* reserve(TimeType time, size_t size); + + void resize(size_t); + size_t size() const { return _size; } + bool empty() const { return _size == 0; } + + bool insert_event(const Evoral::MIDIEvent& event); + bool merge_in_place(const MidiBuffer &other); + + /** EventSink interface for non-RT use (export, bounce). */ + uint32_t write(TimeType time, Evoral::EventType type, uint32_t size, const uint8_t* buf); + + template + class iterator_base + { + public: + iterator_base(BufferType& b, framecnt_t o) + : buffer(&b), offset(o) {} + + iterator_base(const iterator_base& o) + : buffer (o.buffer), offset(o.offset) {} + + inline iterator_base operator= (const iterator_base& o) { + if (&o != this) { + buffer = o.buffer; + offset = o.offset; + } + return *this; + } + + inline EventType operator*() const { + uint8_t* ev_start = buffer->_data + offset + sizeof(TimeType); + int event_size = Evoral::midi_event_size(ev_start); + assert(event_size >= 0); + return EventType(midi_parameter_type(*ev_start), + *((TimeType*)(buffer->_data + offset)), + event_size, ev_start); + } + + inline EventType operator*() { + uint8_t* ev_start = buffer->_data + offset + sizeof(TimeType); + int event_size = Evoral::midi_event_size(ev_start); + assert(event_size >= 0); + return EventType(midi_parameter_type(*ev_start), + *(reinterpret_cast((uintptr_t)(buffer->_data + offset))), + event_size, ev_start); + } + + inline TimeType * timeptr() { + return reinterpret_cast((uintptr_t)(buffer->_data + offset)); + } + + inline iterator_base& operator++() { + uint8_t* ev_start = buffer->_data + offset + sizeof(TimeType); + int event_size = Evoral::midi_event_size(ev_start); + assert(event_size >= 0); + offset += sizeof(TimeType) + event_size; + return *this; + } + + inline bool operator!=(const iterator_base& other) const { + return (buffer != other.buffer) || (offset != other.offset); + } + + inline bool operator==(const iterator_base& other) const { + return (buffer == other.buffer) && (offset == other.offset); + } + + BufferType* buffer; + size_t offset; + }; + + typedef iterator_base< MidiBuffer, Evoral::MIDIEvent > iterator; + typedef iterator_base< const MidiBuffer, const Evoral::MIDIEvent > const_iterator; + + iterator begin() { return iterator(*this, 0); } + iterator end() { return iterator(*this, _size); } + + const_iterator begin() const { return const_iterator(*this, 0); } + const_iterator end() const { return const_iterator(*this, _size); } + + iterator erase(const iterator& i) { + assert (i.buffer == this); + uint8_t* ev_start = _data + i.offset + sizeof (TimeType); + int event_size = Evoral::midi_event_size (ev_start); + + if (event_size < 0) { + /* unknown size, sysex: return end() */ + return end(); + } + + size_t total_data_deleted = sizeof(TimeType) + event_size; + + if (i.offset + total_data_deleted > _size) { + _size = 0; + return end(); + } + + /* we need to avoid the temporary malloc that memmove would do, + so copy by hand. remember: this is small amounts of data ... + */ + size_t a, b; + for (a = i.offset, b = i.offset + total_data_deleted; b < _size; ++b, ++a) { + _data[a] = _data[b]; + } + + _size -= total_data_deleted; + + /* all subsequent iterators are now invalid, and the one we + * return should refer to the event we copied, which was after + * the one we just erased. + */ + + return iterator (*this, i.offset); + } + + uint8_t* data() const { return _data; } + + /** + * returns true if the message with the second argument as its MIDI + * status byte should preceed the message with the first argument as + * its MIDI status byte. */ + static bool second_simultaneous_midi_byte_is_first (uint8_t, uint8_t); - MidiEvent* _events; ///< Event structs that point to offsets in _data - Byte* _data; ///< MIDI, straight up. No time stamps. -}; +private: + friend class iterator_base< MidiBuffer, Evoral::MIDIEvent >; + friend class iterator_base< const MidiBuffer, const Evoral::MIDIEvent >; + uint8_t* _data; ///< timestamp, event, timestamp, event, ... + pframes_t _size; +}; } // namespace ARDOUR