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/*
Copyright (C) 2000 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.
$Id: diskstream.h 579 2006-06-12 19:56:37Z essej $
*/
#ifndef __ardour_midi_diskstream_h__
#define __ardour_midi_diskstream_h__
#include <cmath>
#include <cassert>
#include <string>
#include <queue>
#include <map>
#include <vector>
#include <time.h>
#include "pbd/fastlog.h"
#include "pbd/ringbufferNPT.h"
#include "ardour/ardour.h"
#include "ardour/diskstream.h"
#include "ardour/midi_playlist.h"
#include "ardour/midi_ring_buffer.h"
#include "ardour/utils.h"
struct tm;
namespace ARDOUR {
class IO;
class MidiEngine;
class MidiPort;
class MidiRingbuffer;
class SMFSource;
class Send;
class Session;
class MidiDiskstream : public Diskstream
{
public:
MidiDiskstream (Session &, const string& name, Diskstream::Flag f = Recordable);
MidiDiskstream (Session &, const XMLNode&);
~MidiDiskstream();
float playback_buffer_load() const;
float capture_buffer_load() const;
void get_playback (MidiBuffer& dst, framecnt_t);
void flush_playback (framepos_t, framepos_t);
void set_record_enabled (bool yn);
void reset_tracker ();
boost::shared_ptr<MidiPlaylist> midi_playlist () { return boost::dynamic_pointer_cast<MidiPlaylist>(_playlist); }
int use_playlist (boost::shared_ptr<Playlist>);
int use_new_playlist ();
int use_copy_playlist ();
bool set_name (std::string const &);
/* stateful */
XMLNode& get_state(void);
int set_state(const XMLNode&, int version);
void ensure_jack_monitors_input (bool);
boost::shared_ptr<SMFSource> write_source () { return _write_source; }
int set_destructive (bool yn); // doom!
void set_note_mode (NoteMode m);
/** Emitted when some MIDI data has been received for recording.
* Parameter is the source that it is destined for.
* A caller can get a copy of the data with get_gui_feed_buffer ()
*/
PBD::Signal1<void, boost::weak_ptr<MidiSource> > DataRecorded;
boost::shared_ptr<MidiBuffer> get_gui_feed_buffer () const;
protected:
friend class Session;
friend class Butler;
/* the Session is the only point of access for these
because they require that the Session is "inactive"
while they are called.
*/
void set_pending_overwrite(bool);
int overwrite_existing_buffers ();
void set_block_size (pframes_t);
int internal_playback_seek (framecnt_t distance);
int can_internal_playback_seek (framecnt_t distance);
std::list<boost::shared_ptr<Source> > steal_write_sources();
void reset_write_sources (bool, bool force = false);
void non_realtime_input_change ();
void non_realtime_locate (framepos_t location);
static void set_readahead_frames (framecnt_t frames_ahead) { midi_readahead = frames_ahead; }
protected:
int seek (framepos_t which_sample, bool complete_refill = false);
protected:
friend class MidiTrack;
int process (BufferSet&, framepos_t transport_frame, pframes_t nframes, framecnt_t &, bool need_diskstream);
frameoffset_t calculate_playback_distance (pframes_t nframes);
bool commit (framecnt_t nframes);
static framecnt_t midi_readahead;
private:
/* The two central butler operations */
int do_flush (RunContext context, bool force = false);
int do_refill ();
int do_refill_with_alloc();
int read (framepos_t& start, framecnt_t cnt, bool reversed);
void finish_capture ();
void transport_stopped_wallclock (struct tm&, time_t, bool abort);
void transport_looped (framepos_t transport_frame);
void init ();
int use_new_write_source (uint32_t n=0);
int find_and_use_playlist (const string&);
void allocate_temporary_buffers ();
int use_pending_capture_data (XMLNode& node);
void get_input_sources ();
void set_align_style_from_io();
/* fixed size buffers per instance of ardour for now (non-dynamic)
*/
void adjust_playback_buffering () {}
void adjust_capture_buffering () {}
bool prep_record_enable ();
bool prep_record_disable ();
MidiRingBuffer<framepos_t>* _playback_buf;
MidiRingBuffer<framepos_t>* _capture_buf;
boost::weak_ptr<MidiPort> _source_port;
boost::shared_ptr<SMFSource> _write_source;
NoteMode _note_mode;
gint _frames_written_to_ringbuffer;
gint _frames_read_from_ringbuffer;
volatile gint _frames_pending_write;
volatile gint _num_captured_loops;
/** A buffer that we use to put newly-arrived MIDI data in for
the GUI to read (so that it can update itself).
*/
MidiBuffer _gui_feed_buffer;
mutable Glib::Threads::Mutex _gui_feed_buffer_mutex;
};
}; /* namespace ARDOUR */
#endif /* __ardour_midi_diskstream_h__ */
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