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livetrax/gtk2_ardour/export_range_markers_dialog.cc

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/*
Copyright (C) 2006 Paul Davis
Author: Andre Raue
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 <sys/stat.h>
#include <sstream>
#include <ardour/audioengine.h>
#include <ardour/sndfile_helpers.h>
#include "ardour_ui.h"
#include "export_range_markers_dialog.h"
#include "i18n.h"
using namespace Gtk;
using namespace ARDOUR;
Large nasty commit in the form of a 5000 line patch chock-full of completely unecessary changes. (Sorry, doing a "sprint" based thing, this is the end of the first one) Achieved MIDI track and bus creation, associated Jack port and diskstream creation, and minimal GUI stuff for creating them. Should be set to start work on actually recording and playing midi to/from disk now. Relevant (significant) changes: - Creation of a Buffer class. Base class is type agnostic so things can point to a buffer but not care what kind it is (otherwise it'd be a template). Derived into AudioBuffer and MidiBuffer, with a type tag because checking type is necessary in parts of the code where dynamic_cast wouldn't be wise. Originally I considered this a hack, but passing around a type proved to be a very good solution to all the other problems (below). There is a 1:1 mapping between jack port data types and ardour Buffer types (with a conversion function), but that's easily removed if it ever becomes necessary. Having the type scoped in the Buffer class is maybe not the best spot for it, but whatever (this is proof of concept kinda stuff right now...) - IO now has a "default" port type (passed to the constructor and stored as a member), used by ensure_io (and similar) to create n ports. IO::register_***_port has a type argument that defaults to the default type if not passed. Rationale: previous IO API is identical, no changes needed to existing code, but path is paved for multiple port types in one IO, which we will need for eg synth plugin inserts, among other things. This is not quite ideal (best would be to only have the two port register functions and have them take a type), but the alternative is a lot of work (namely destroying the 'ensure' functions and everything that uses them) for very little gain. (I am convinced after quite a few tries at the whiteboard that subclassing IO in any way is not a feasible option, look at it's inheritance diagram in Doxygen and you can see why) - AudioEngine::register_audio_input_port is now register_input_port and takes a type argument. Ditto for output. - (Most significant change) AudioDiskstream abstracted into Distream, and sibling MidiDiskstream created. Very much still a work in progress, but Diskstream is there to switch references over to (most already are), which is the important part. It is still unclear what the MIDI diskstream's relation to channels is, but I'm pretty sure they will be single channel only (so SMF Type 0) since noone can come up with a reason otherwise. - MidiTrack creation. Same thing as AudioTrack but with a different default type basically. No big deal here. - Random cleanups and variable renamings etc. because I have OCD and can't help myself. :) Known broken: Loading of sessions containing MIDI tracks. git-svn-id: svn://localhost/ardour2/branches/midi@641 d708f5d6-7413-0410-9779-e7cbd77b26cf
2006-06-26 12:01:34 -04:00
using namespace PBD;
using namespace std;
ExportRangeMarkersDialog::ExportRangeMarkersDialog (PublicEditor& editor)
: ExportDialog(editor)
{
do_not_allow_export_cd_markers();
total_duration = 0;
current_range_marker_index = 0;
}
void
ExportRangeMarkersDialog::export_audio_data ()
{
getSession().locations()->apply(*this, &ExportRangeMarkersDialog::process_range_markers_export);
}
void
ExportRangeMarkersDialog::process_range_markers_export(Locations::LocationList& locations)
{
Locations::LocationList::iterator locationIter;
current_range_marker_index = 0;
init_progress_computing(locations);
for (locationIter = locations.begin(); locationIter != locations.end(); ++locationIter) {
Location *currentLocation = (*locationIter);
if(currentLocation->is_range_marker()){
// init filename
string filepath = get_target_filepath(
get_selected_file_name(),
currentLocation->name(),
sndfile_file_ending_from_string(get_selected_header_format()));
initSpec(filepath);
spec.start_frame = currentLocation->start();
spec.end_frame = currentLocation->end();
getSession().request_locate(spec.start_frame, false);
if (getSession().start_audio_export(spec)){
// if export fails
return;
}
// wait until export of this range finished
gtk_main_iteration();
while(spec.running){
if(gtk_events_pending()){
gtk_main_iteration();
}else {
usleep(10000);
}
}
getSession().engine().freewheel (false);
current_range_marker_index++;
}
}
spec.running = false;
}
string
ExportRangeMarkersDialog::get_target_filepath(string path, string filename, string postfix)
{
string target_path = path;
if ((target_path.find_last_of ('/')) != string::npos) {
target_path += '/';
}
string target_filepath = target_path + filename + postfix;
struct stat statbuf;
for(int counter=1; (stat (target_filepath.c_str(), &statbuf) == 0); counter++){
// while file exists
ostringstream scounter;
scounter.flush();
scounter << counter;
target_filepath =
target_path + filename + "_" + scounter.str() + postfix;
}
return target_filepath;
}
bool
ExportRangeMarkersDialog::is_filepath_valid(string &filepath)
{
// sanity check file name first
struct stat statbuf;
if (filepath.empty()) {
// warning dialog
string txt = _("Please enter a valid target directory.");
MessageDialog msg (*this, txt, false, MESSAGE_ERROR, BUTTONS_OK, true);
msg.run();
return false;
}
if ( (stat (filepath.c_str(), &statbuf) != 0) ||
(!S_ISDIR (statbuf.st_mode)) ) {
string txt = _("Please select an existing target directory. Files\n"
"are not allowed!");
MessageDialog msg (*this, txt, false, MESSAGE_ERROR, BUTTONS_OK, true);
msg.run();
return false;
}
// directory needs to exist and be writable
string dirpath = Glib::path_get_dirname (filepath);
if (::access (dirpath.c_str(), W_OK) != 0) {
string txt = _("Cannot write file in: ") + dirpath;
MessageDialog msg (*this, txt, false, MESSAGE_ERROR, BUTTONS_OK, true);
msg.run();
return false;
}
return true;
}
void
ExportRangeMarkersDialog::init_progress_computing(Locations::LocationList& locations)
{
// flush vector
range_markers_durations_aggregated.resize(0);
jack_nframes_t duration_before_current_location = 0;
Locations::LocationList::iterator locationIter;
for (locationIter = locations.begin(); locationIter != locations.end(); ++locationIter) {
Location *currentLocation = (*locationIter);
if(currentLocation->is_range_marker()){
range_markers_durations_aggregated.push_back(
duration_before_current_location);
jack_nframes_t duration =
currentLocation->end() - currentLocation->start();
range_markers_durations.push_back(duration);
duration_before_current_location += duration;
}
}
total_duration = duration_before_current_location;
}
gint
ExportRangeMarkersDialog::progress_timeout ()
{
double progress = 0.0;
if(current_range_marker_index >= range_markers_durations.size()){
progress = 1.0;
}
else{
progress =
((double) range_markers_durations_aggregated[current_range_marker_index] +
(spec.progress * (double) range_markers_durations[current_range_marker_index])) /
(double) total_duration;
}
set_progress_fraction( progress );
return TRUE;
}