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location.cc
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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.
*/
#include <algorithm>
#include <set>
#include <cstdio> /* for sprintf */
#include <unistd.h>
#include <cerrno>
#include <ctime>
#include <list>
#include "pbd/convert.h"
#include "pbd/stl_delete.h"
#include "pbd/xml++.h"
#include "pbd/enumwriter.h"
#include "pbd/statefulidpredicates.h"
#include "ardour/location.h"
#include "ardour/midi_scene_change.h"
#include "ardour/session.h"
#include "ardour/audiofilesource.h"
#include "ardour/tempo.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
PBD::Signal0<void> Location::scene_changed;
PBD::Signal1<void,Location*> Location::name_changed;
PBD::Signal1<void,Location*> Location::end_changed;
PBD::Signal1<void,Location*> Location::start_changed;
PBD::Signal1<void,Location*> Location::flags_changed;
PBD::Signal1<void,Location*> Location::lock_changed;
PBD::Signal1<void,Location*> Location::position_lock_style_changed;
PBD::Signal1<void,Location*> Location::changed;
Location::Location (Session& s)
: SessionHandleRef (s)
, _start (0)
, _end (0)
, _flags (Flags (0))
, _locked (false)
, _position_lock_style (AudioTime)
{
assert (_start >= 0);
assert (_end >= 0);
}
/** Construct a new Location, giving it the position lock style determined by glue-new-markers-to-bars-and-beats */
Location::Location (Session& s, framepos_t sample_start, framepos_t sample_end, const std::string &name, Flags bits)
: SessionHandleRef (s)
, _name (name)
, _start (sample_start)
, _end (sample_end)
, _flags (bits)
, _locked (false)
, _position_lock_style (s.config.get_glue_new_markers_to_bars_and_beats() ? MusicTime : AudioTime)
{
recompute_bbt_from_frames ();
assert (_start >= 0);
assert (_end >= 0);
}
Location::Location (const Location& other)
: SessionHandleRef (other._session)
, StatefulDestructible()
, _name (other._name)
, _start (other._start)
, _bbt_start (other._bbt_start)
, _end (other._end)
, _bbt_end (other._bbt_end)
, _flags (other._flags)
, _position_lock_style (other._position_lock_style)
{
/* copy is not locked even if original was */
_locked = false;
assert (_start >= 0);
assert (_end >= 0);
/* scene change is NOT COPIED */
}
Location::Location (Session& s, const XMLNode& node)
: SessionHandleRef (s)
, _position_lock_style (AudioTime)
{
/* Note: _position_lock_style is initialised above in case set_state doesn't set it
(for 2.X session file compatibility).
*/
if (set_state (node, Stateful::loading_state_version)) {
throw failed_constructor ();
}
assert (_start >= 0);
assert (_end >= 0);
}
bool
Location::operator== (const Location& other)
{
if (_name != other._name ||
_start != other._start ||
_end != other._end ||
_bbt_start != other._bbt_start ||
_bbt_end != other._bbt_end ||
_flags != other._flags ||
_position_lock_style != other._position_lock_style) {
return false;
}
return true;
}
Location*
Location::operator= (const Location& other)
{
if (this == &other) {
return this;
}
_name = other._name;
_start = other._start;
_bbt_start = other._bbt_start;
_end = other._end;
_bbt_end = other._bbt_end;
_flags = other._flags;
_position_lock_style = other._position_lock_style;
/* XXX need to copy scene change */
/* copy is not locked even if original was */
_locked = false;
/* "changed" not emitted on purpose */
assert (_start >= 0);
assert (_end >= 0);
return this;
}
/** Set location name
*/
void
Location::set_name (const std::string& str)
{
_name = str;
name_changed (this); /* EMIT SIGNAL */
NameChanged (); /* EMIT SIGNAL */
}
/** Set start position.
* @param s New start.
* @param force true to force setting, even if the given new start is after the current end.
* @param allow_bbt_recompute True to recompute BBT start time from the new given start time.
*/
int
Location::set_start (framepos_t s, bool force, bool allow_bbt_recompute)
{
if (s < 0) {
return -1;
}
if (_locked) {
return -1;
}
if (!force) {
if (((is_auto_punch() || is_auto_loop()) && s >= _end) || (!is_mark() && s > _end)) {
return -1;
}
}
if (is_mark()) {
if (_start != s) {
_start = s;
_end = s;
if (allow_bbt_recompute) {
recompute_bbt_from_frames ();
}
start_changed (this); /* EMIT SIGNAL */
StartChanged (); /* EMIT SIGNAL */
end_changed (this); /* EMIT SIGNAL */
EndChanged (); /* EMIT SIGNAL */
}
/* moving the start (position) of a marker with a scene change
requires an update in the Scene Changer.
*/
if (_scene_change) {
scene_changed (); /* EMIT SIGNAL */
}
assert (_start >= 0);
assert (_end >= 0);
return 0;
} else {
/* range locations must exceed a minimum duration */
if (_end - s < Config->get_range_location_minimum()) {
return -1;
}
}
if (s != _start) {
framepos_t const old = _start;
_start = s;
if (allow_bbt_recompute) {
recompute_bbt_from_frames ();
}
start_changed (this); /* EMIT SIGNAL */
StartChanged (); /* EMIT SIGNAL */
if (is_session_range ()) {
Session::StartTimeChanged (old); /* EMIT SIGNAL */
AudioFileSource::set_header_position_offset (s);
}
}
assert (_start >= 0);
return 0;
}
/** Set end position.
* @param s New end.
* @param force true to force setting, even if the given new start is after the current end.
* @param allow_bbt_recompute True to recompute BBT end time from the new given end time.
*/
int
Location::set_end (framepos_t e, bool force, bool allow_bbt_recompute)
{
if (e < 0) {
return -1;
}
if (_locked) {
return -1;
}
if (!force) {
if (((is_auto_punch() || is_auto_loop()) && e <= _start) || e < _start) {
return -1;
}
}
if (is_mark()) {
if (_start != e) {
_start = e;
_end = e;
if (allow_bbt_recompute) {
recompute_bbt_from_frames ();
}
start_changed (this); /* EMIT SIGNAL */
StartChanged (); /* EMIT SIGNAL */
end_changed (this); /* EMIT SIGNAL */
EndChanged (); /* EMIT SIGNAL */
}
assert (_start >= 0);
assert (_end >= 0);
return 0;
} else {
/* range locations must exceed a minimum duration */
if (e - _start < Config->get_range_location_minimum()) {
return -1;
}
}
if (e != _end) {
framepos_t const old = _end;
_end = e;
if (allow_bbt_recompute) {
recompute_bbt_from_frames ();
}
end_changed(this); /* EMIT SIGNAL */
EndChanged(); /* EMIT SIGNAL */
if (is_session_range()) {
Session::EndTimeChanged (old); /* EMIT SIGNAL */
}
}
assert (_end >= 0);
return 0;
}
int
Location::set (framepos_t s, framepos_t e, bool allow_bbt_recompute)
{
if (s < 0 || e < 0) {
return -1;
}
/* check validity */
if (((is_auto_punch() || is_auto_loop()) && s >= e) || (!is_mark() && s > e)) {
return -1;
}
bool start_change = false;
bool end_change = false;
if (is_mark()) {
if (_start != s) {
_start = s;
_end = s;
if (allow_bbt_recompute) {
recompute_bbt_from_frames ();
}
start_change = true;
end_change = true;
}
assert (_start >= 0);
assert (_end >= 0);
} else {
/* range locations must exceed a minimum duration */
if (e - s < Config->get_range_location_minimum()) {
return -1;
}
if (s != _start) {
framepos_t const old = _start;
_start = s;
if (allow_bbt_recompute) {
recompute_bbt_from_frames ();
}
start_change = true;
if (is_session_range ()) {
Session::StartTimeChanged (old); /* EMIT SIGNAL */
AudioFileSource::set_header_position_offset (s);
}
}
if (e != _end) {
framepos_t const old = _end;
_end = e;
if (allow_bbt_recompute) {
recompute_bbt_from_frames ();
}
end_change = true;
if (is_session_range()) {
Session::EndTimeChanged (old); /* EMIT SIGNAL */
}
}
assert (_end >= 0);
}
if (start_change) {
start_changed(this); /* EMIT SIGNAL */
StartChanged(); /* EMIT SIGNAL */
}
if (end_change) {
end_changed(this); /* EMIT SIGNAL */
EndChanged(); /* EMIT SIGNAL */
}
if (start_change && end_change) {
changed (this);
Changed ();
}
return 0;
}
int
Location::move_to (framepos_t pos)
{
if (pos < 0) {
return -1;
}
if (_locked) {
return -1;
}
if (_start != pos) {
_start = pos;
_end = _start + length();
recompute_bbt_from_frames ();
changed (this); /* EMIT SIGNAL */
Changed (); /* EMIT SIGNAL */
}
assert (_start >= 0);
assert (_end >= 0);
return 0;
}
void
Location::set_hidden (bool yn, void*)
{
if (set_flag_internal (yn, IsHidden)) {
flags_changed (this); /* EMIT SIGNAL */
FlagsChanged ();
}
}
void
Location::set_cd (bool yn, void*)
{
// XXX this really needs to be session start
// but its not available here - leave to GUI
if (yn && _start == 0) {
error << _("You cannot put a CD marker at this position") << endmsg;
return;
}
if (set_flag_internal (yn, IsCDMarker)) {
flags_changed (this); /* EMIT SIGNAL */
FlagsChanged ();
}
}
void
Location::set_is_range_marker (bool yn, void*)
{
if (set_flag_internal (yn, IsRangeMarker)) {
flags_changed (this);
FlagsChanged (); /* EMIT SIGNAL */
}
}
void
Location::set_skip (bool yn)
{
if (is_range_marker() && length() > 0) {
if (set_flag_internal (yn, IsSkip)) {
flags_changed (this);
FlagsChanged ();
}
}
}
void
Location::set_skipping (bool yn)
{
if (is_range_marker() && is_skip() && length() > 0) {
if (set_flag_internal (yn, IsSkipping)) {
flags_changed (this);
FlagsChanged ();
}
}
}
void
Location::set_auto_punch (bool yn, void*)
{
if (is_mark() || _start == _end) {
return;
}
if (set_flag_internal (yn, IsAutoPunch)) {
flags_changed (this); /* EMIT SIGNAL */
FlagsChanged (); /* EMIT SIGNAL */
}
}
void
Location::set_auto_loop (bool yn, void*)
{
if (is_mark() || _start == _end) {
return;
}
if (set_flag_internal (yn, IsAutoLoop)) {
flags_changed (this); /* EMIT SIGNAL */
FlagsChanged (); /* EMIT SIGNAL */
}
}
bool
Location::set_flag_internal (bool yn, Flags flag)
{
if (yn) {
if (!(_flags & flag)) {
_flags = Flags (_flags | flag);
return true;
}
} else {
if (_flags & flag) {
_flags = Flags (_flags & ~flag);
return true;
}
}
return false;
}
void
Location::set_mark (bool yn)
{
/* This function is private, and so does not emit signals */
if (_start != _end) {
return;
}
set_flag_internal (yn, IsMark);
}
XMLNode&
Location::cd_info_node(const string & name, const string & value)
{
XMLNode* root = new XMLNode("CD-Info");
root->add_property("name", name);
root->add_property("value", value);
return *root;
}
XMLNode&
Location::get_state ()
{
XMLNode *node = new XMLNode ("Location");
char buf[64];
typedef map<string, string>::const_iterator CI;
for(CI m = cd_info.begin(); m != cd_info.end(); ++m){
node->add_child_nocopy(cd_info_node(m->first, m->second));
}
id().print (buf, sizeof (buf));
node->add_property("id", buf);
node->add_property ("name", name());
snprintf (buf, sizeof (buf), "%" PRId64, start());
node->add_property ("start", buf);
snprintf (buf, sizeof (buf), "%" PRId64, end());
node->add_property ("end", buf);
node->add_property ("flags", enum_2_string (_flags));
node->add_property ("locked", (_locked ? "yes" : "no"));
node->add_property ("position-lock-style", enum_2_string (_position_lock_style));
if (_scene_change) {
node->add_child_nocopy (_scene_change->get_state());
}
return *node;
}
int
Location::set_state (const XMLNode& node, int version)
{
const XMLProperty *prop;
XMLNodeList cd_list = node.children();
XMLNodeConstIterator cd_iter;
XMLNode *cd_node;
string cd_name;
string cd_value;
if (node.name() != "Location") {
error << _("incorrect XML node passed to Location::set_state") << endmsg;
return -1;
}
if (!set_id (node)) {
// Old versions did not write ids for locations: make a new one.
reset_id();
warning << _("XML node for Location has no ID information") << endmsg;
}
if ((prop = node.property ("name")) == 0) {
error << _("XML node for Location has no name information") << endmsg;
return -1;
}
set_name (prop->value());
if ((prop = node.property ("start")) == 0) {
error << _("XML node for Location has no start information") << endmsg;
return -1;
}
/* can't use set_start() here, because _end
may make the value of _start illegal.
*/
sscanf (prop->value().c_str(), "%" PRId64, &_start);
if ((prop = node.property ("end")) == 0) {
error << _("XML node for Location has no end information") << endmsg;
return -1;
}
sscanf (prop->value().c_str(), "%" PRId64, &_end);
if ((prop = node.property ("flags")) == 0) {
error << _("XML node for Location has no flags information") << endmsg;
return -1;
}
_flags = Flags (string_2_enum (prop->value(), _flags));
if ((prop = node.property ("locked")) != 0) {
_locked = string_is_affirmative (prop->value());
} else {
_locked = false;
}
for (cd_iter = cd_list.begin(); cd_iter != cd_list.end(); ++cd_iter) {
cd_node = *cd_iter;
if (cd_node->name() != "CD-Info") {
continue;
}
if ((prop = cd_node->property ("name")) != 0) {
cd_name = prop->value();
} else {
throw failed_constructor ();
}
if ((prop = cd_node->property ("value")) != 0) {
cd_value = prop->value();
} else {
throw failed_constructor ();
}
cd_info[cd_name] = cd_value;
}
if ((prop = node.property ("position-lock-style")) != 0) {
_position_lock_style = PositionLockStyle (string_2_enum (prop->value(), _position_lock_style));
}
XMLNode* scene_child = find_named_node (node, SceneChange::xml_node_name);
if (scene_child) {
_scene_change = SceneChange::factory (*scene_child, version);
}
recompute_bbt_from_frames ();
changed (this); /* EMIT SIGNAL */
Changed (); /* EMIT SIGNAL */
assert (_start >= 0);
assert (_end >= 0);
return 0;
}
void
Location::set_position_lock_style (PositionLockStyle ps)
{
if (_position_lock_style == ps) {
return;
}
_position_lock_style = ps;
recompute_bbt_from_frames ();
position_lock_style_changed (this); /* EMIT SIGNAL */
PositionLockStyleChanged (); /* EMIT SIGNAL */
}
void
Location::recompute_bbt_from_frames ()
{
if (_position_lock_style != MusicTime) {
return;
}
_session.bbt_time (_start, _bbt_start);
_session.bbt_time (_end, _bbt_end);
}
void
Location::recompute_frames_from_bbt ()
{
if (_position_lock_style != MusicTime) {
return;
}
TempoMap& map (_session.tempo_map());
set (map.frame_time (_bbt_start), map.frame_time (_bbt_end), false);
}
void
Location::lock ()
{
_locked = true;
lock_changed (this);
LockChanged ();
}
void
Location::unlock ()
{
_locked = false;
lock_changed (this);
LockChanged ();
}
void
Location::set_scene_change (boost::shared_ptr<SceneChange> sc)
{
_scene_change = sc;
scene_changed (); /* EMIT SIGNAL */
}
/*---------------------------------------------------------------------- */
Locations::Locations (Session& s)
: SessionHandleRef (s)
{
current_location = 0;
}
Locations::~Locations ()
{
for (LocationList::iterator i = locations.begin(); i != locations.end(); ) {
LocationList::iterator tmp = i;
++tmp;
delete *i;
i = tmp;
}
}
int
Locations::set_current (Location *loc, bool want_lock)
{
int ret;
if (want_lock) {
Glib::Threads::Mutex::Lock lm (lock);
ret = set_current_unlocked (loc);
} else {
ret = set_current_unlocked (loc);
}
if (ret == 0) {
current_changed (current_location); /* EMIT SIGNAL */
}
return ret;
}
int
Locations::next_available_name(string& result,string base)
{
LocationList::iterator i;
string::size_type l;
int suffix;
char buf[32];
std::map<uint32_t,bool> taken;
uint32_t n;
result = base;
l = base.length();
if (!base.empty()) {
/* find all existing names that match "base", and store
the numeric part of them (if any) in the map "taken"
*/
for (i = locations.begin(); i != locations.end(); ++i) {
const string& temp ((*i)->name());
if (!temp.find (base,0)) {
if ((suffix = atoi (temp.substr(l,3))) != 0) {
taken.insert (make_pair (suffix,true));
}
}
}
}
/* Now search for an un-used suffix to add to "base". This
will find "holes" in the numbering sequence when a location
was deleted.
This must start at 1, both for human-numbering reasons
and also because the call to atoi() above would return
zero if there is no recognizable numeric suffix, causing
"base 0" not to be inserted into the "taken" map.
*/
n = 1;
while (n < UINT32_MAX) {
if (taken.find (n) == taken.end()) {
snprintf (buf, sizeof(buf), "%d", n);
result += buf;
return 1;
}
++n;
}
return 0;
}
int
Locations::set_current_unlocked (Location *loc)
{
if (find (locations.begin(), locations.end(), loc) == locations.end()) {
error << _("Locations: attempt to use unknown location as selected location") << endmsg;
return -1;
}
current_location = loc;
return 0;
}
void
Locations::clear ()
{
{
Glib::Threads::Mutex::Lock lm (lock);
for (LocationList::iterator i = locations.begin(); i != locations.end(); ) {
LocationList::iterator tmp = i;
++tmp;
if (!(*i)->is_session_range()) {
delete *i;
locations.erase (i);
}
i = tmp;
}
current_location = 0;
}
changed (); /* EMIT SIGNAL */
current_changed (0); /* EMIT SIGNAL */
}
void
Locations::clear_markers ()
{
{
Glib::Threads::Mutex::Lock lm (lock);
LocationList::iterator tmp;
for (LocationList::iterator i = locations.begin(); i != locations.end(); ) {
tmp = i;
++tmp;
if ((*i)->is_mark() && !(*i)->is_session_range()) {
delete *i;
locations.erase (i);
}
i = tmp;
}
}
changed (); /* EMIT SIGNAL */
}
void
Locations::clear_ranges ()
{
{
Glib::Threads::Mutex::Lock lm (lock);
LocationList::iterator tmp;
for (LocationList::iterator i = locations.begin(); i != locations.end(); ) {
tmp = i;
++tmp;
/* We do not remove these ranges as part of this
* operation
*/
if ((*i)->is_auto_punch() ||
(*i)->is_auto_loop() ||
(*i)->is_session_range()) {
i = tmp;
continue;
}
if (!(*i)->is_mark()) {
delete *i;
locations.erase (i);
}
i = tmp;
}
current_location = 0;
}
changed ();
current_changed (0); /* EMIT SIGNAL */
}
void
Locations::add (Location *loc, bool make_current)
{
assert (loc);
{
Glib::Threads::Mutex::Lock lm (lock);
locations.push_back (loc);
if (make_current) {
current_location = loc;
}
}
added (loc); /* EMIT SIGNAL */
if (make_current) {
current_changed (current_location); /* EMIT SIGNAL */
}
if (loc->is_session_range()) {
Session::StartTimeChanged (0);
Session::EndTimeChanged (1);
}
}
void
Locations::remove (Location *loc)
{
bool was_removed = false;
bool was_current = false;
LocationList::iterator i;
if (loc->is_session_range()) {
return;
}
{
Glib::Threads::Mutex::Lock lm (lock);
for (i = locations.begin(); i != locations.end(); ++i) {
if ((*i) == loc) {
delete *i;
locations.erase (i);
was_removed = true;
if (current_location == loc) {