196 lines
5.7 KiB
C++
196 lines
5.7 KiB
C++
/*
|
|
* Copyright (C) 2016-2018 Paul Davis <paul@linuxaudiosystems.com>
|
|
* Copyright (C) 2017-2019 Robin Gareus <robin@gareus.org>
|
|
*
|
|
* 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.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#ifndef __ardour_disk_io_h__
|
|
#define __ardour_disk_io_h__
|
|
|
|
#include <vector>
|
|
#include <string>
|
|
#include <exception>
|
|
|
|
#include "pbd/ringbufferNPT.h"
|
|
#include "pbd/rcu.h"
|
|
|
|
#include "ardour/interpolation.h"
|
|
#include "ardour/midi_buffer.h"
|
|
#include "ardour/processor.h"
|
|
#include "ardour/rt_midibuffer.h"
|
|
|
|
namespace PBD {
|
|
template<class T> class PlaybackBuffer;
|
|
}
|
|
|
|
namespace ARDOUR {
|
|
|
|
class AudioFileSource;
|
|
class AudioPlaylist;
|
|
class Location;
|
|
class MidiPlaylist;
|
|
class Playlist;
|
|
class Track;
|
|
class Session;
|
|
|
|
template<typename T> class MidiRingBuffer;
|
|
|
|
class LIBARDOUR_API DiskIOProcessor : public Processor
|
|
{
|
|
public:
|
|
enum Flag {
|
|
Recordable = 0x1,
|
|
Hidden = 0x2,
|
|
NonLayered = 0x8 // deprecated (kept only for enum compat)
|
|
};
|
|
|
|
static const std::string state_node_name;
|
|
|
|
DiskIOProcessor (Session&, Track&, const std::string& name, Flag f, Temporal::TimeDomain td);
|
|
|
|
virtual ~DiskIOProcessor ();
|
|
|
|
static void set_buffering_parameters (BufferingPreset bp);
|
|
|
|
int set_block_size (pframes_t);
|
|
bool configure_io (ChanCount in, ChanCount out);
|
|
bool can_support_io_configuration (const ChanCount& in, ChanCount& out);
|
|
|
|
/** @return A number between 0 and 1, where 0 indicates that the playback/capture buffer
|
|
* is dry (ie the disk subsystem could not keep up) and 1 indicates that the
|
|
* buffer is full.
|
|
*/
|
|
virtual float buffer_load() const = 0;
|
|
|
|
void set_flag (Flag f) { _flags = Flag (_flags | f); }
|
|
void unset_flag (Flag f) { _flags = Flag (_flags & ~f); }
|
|
|
|
bool hidden() const { return _flags & Hidden; }
|
|
bool recordable() const { return _flags & Recordable; }
|
|
|
|
virtual void non_realtime_locate (samplepos_t);
|
|
|
|
virtual void punch_in() {}
|
|
virtual void punch_out() {}
|
|
|
|
bool slaved() const { return _slaved; }
|
|
void set_slaved(bool yn) { _slaved = yn; }
|
|
|
|
PBD::Signal0<void> SpeedChanged;
|
|
PBD::Signal0<void> ReverseChanged;
|
|
|
|
int set_state (const XMLNode&, int version);
|
|
|
|
int add_channel (uint32_t how_many);
|
|
int remove_channel (uint32_t how_many);
|
|
|
|
bool need_butler() const { return _need_butler; }
|
|
|
|
boost::shared_ptr<Playlist> get_playlist (DataType dt) const { return _playlists[dt]; }
|
|
boost::shared_ptr<MidiPlaylist> midi_playlist() const;
|
|
boost::shared_ptr<AudioPlaylist> audio_playlist() const;
|
|
|
|
virtual void playlist_modified () {}
|
|
virtual int use_playlist (DataType, boost::shared_ptr<Playlist>);
|
|
|
|
virtual void adjust_buffering() = 0;
|
|
|
|
protected:
|
|
friend class Auditioner;
|
|
virtual int seek (samplepos_t which_sample, bool complete_refill = false) = 0;
|
|
virtual void configuration_changed () = 0;
|
|
|
|
protected:
|
|
Flag _flags;
|
|
bool _slaved;
|
|
bool in_set_state;
|
|
samplepos_t playback_sample;
|
|
bool _need_butler;
|
|
Track& _track;
|
|
|
|
void init ();
|
|
|
|
Glib::Threads::Mutex state_lock;
|
|
|
|
static bool get_buffering_presets (BufferingPreset bp,
|
|
samplecnt_t& read_chunk_size,
|
|
samplecnt_t& read_buffer_size,
|
|
samplecnt_t& write_chunk_size,
|
|
samplecnt_t& write_buffer_size);
|
|
|
|
enum TransitionType {
|
|
CaptureStart = 0,
|
|
CaptureEnd
|
|
};
|
|
|
|
struct CaptureTransition {
|
|
TransitionType type;
|
|
samplepos_t capture_val; ///< The start or end file sample position
|
|
};
|
|
|
|
/** Information about one audio channel, playback or capture
|
|
* (depending on the derived class)
|
|
*/
|
|
struct ChannelInfo : public boost::noncopyable {
|
|
|
|
ChannelInfo (samplecnt_t buffer_size);
|
|
virtual ~ChannelInfo ();
|
|
|
|
/** A semi-random-access ringbuffers for data to be played back.
|
|
* written to in the butler thread, read from in the process
|
|
* thread.
|
|
*/
|
|
PBD::PlaybackBuffer<Sample>* rbuf;
|
|
|
|
/** A ringbuffer for data to be recorded back, written to in the
|
|
* process thread, read from in the butler thread.
|
|
*/
|
|
PBD::RingBufferNPT<Sample>* wbuf;
|
|
PBD::RingBufferNPT<Sample>::rw_vector rw_vector;
|
|
|
|
/* used only by capture */
|
|
boost::shared_ptr<AudioFileSource> write_source;
|
|
|
|
/* used in the butler thread only */
|
|
samplecnt_t curr_capture_cnt;
|
|
|
|
virtual void resize (samplecnt_t) = 0;
|
|
};
|
|
|
|
typedef std::vector<ChannelInfo*> ChannelList;
|
|
SerializedRCUManager<ChannelList> channels;
|
|
|
|
virtual int add_channel_to (boost::shared_ptr<ChannelList>, uint32_t how_many) = 0;
|
|
int remove_channel_from (boost::shared_ptr<ChannelList>, uint32_t how_many);
|
|
|
|
boost::shared_ptr<Playlist> _playlists[DataType::num_types];
|
|
PBD::ScopedConnectionList playlist_connections;
|
|
|
|
virtual void playlist_changed (const PBD::PropertyChange&) {}
|
|
virtual void playlist_deleted (boost::weak_ptr<Playlist>);
|
|
virtual void playlist_ranges_moved (std::list<Temporal::RangeMove> const &, bool) {}
|
|
|
|
/* The MIDI stuff */
|
|
|
|
MidiRingBuffer<samplepos_t>* _midi_buf;
|
|
|
|
static void get_location_times (const Location* location, timepos_t* start, timepos_t* end, timecnt_t* length);
|
|
};
|
|
|
|
} // namespace ARDOUR
|
|
|
|
#endif /* __ardour_disk_io_h__ */
|