gtk2_ardour/export_dialog.cc

   1 /*
   2     Copyright (C) 1999-2005 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18
  19 */
  20
  21 #include <unistd.h>
  22 #include <utility>
  23 #include <sys/stat.h>
  24 #include <fstream>
  25
  26 #include <samplerate.h>
  27
  28 #include <pbd/convert.h>
  29 #include <pbd/xml++.h>
  30
  31 #include <gtkmm2ext/utils.h>
  32 #include <ardour/export.h>
  33 #include <ardour/sndfile_helpers.h>
  34 #include <ardour/audio_track.h>
  35 #include <ardour/audioregion.h>
  36 #include <ardour/audioengine.h>
  37 #include <ardour/gdither.h>
  38 #include <ardour/utils.h>
  39
  40 #include "export_dialog.h"
  41 #include "ardour_ui.h"
  42 #include "public_editor.h"
  43 #include "keyboard.h"
  44
  45 #include "i18n.h"
  46
  47 #define FRAME_NAME "BaseFrame"
  48
  49 using namespace std;
  50 using namespace ARDOUR;
  51 using namespace PBD;
  52 using namespace sigc;
  53 using namespace Gtk;
  54
  55 static const gchar *sample_rates[] = {
  56         N_("22.05kHz"),
  57         N_("44.1kHz"),
  58         N_("48kHz"),
  59         N_("88.2kHz"),
  60         N_("96kHz"),
  61         N_("192kHz"),
  62         0
  63 };
  64
  65 static const gchar *src_quality[] = {
  66         N_("best"),
  67         N_("fastest"),
  68         N_("linear"),
  69         N_("better"),
  70         N_("intermediate"),
  71         0
  72 };
  73
  74 static const gchar *dither_types[] = {
  75         N_("None"),
  76         N_("Rectangular"),
  77         N_("Shaped Noise"),
  78         N_("Triangular"),
  79         0
  80 };
  81
  82 static const gchar* channel_strings[] = {
  83         N_("stereo"),
  84         N_("mono"),
  85         0
  86 };
  87
  88 static const gchar* cue_file_types[] = {
  89         N_("None"),
  90         N_("CUE"),
  91         N_("TOC"),
  92         0
  93 };
  94
  95 ExportDialog::ExportDialog(PublicEditor& e)
  96         : ArdourDialog ("export dialog"),
  97           editor (e),
  98           format_table (9, 2),
  99           format_frame (_("Format")),
 100           cue_file_label (_("CD Marker File Type"), 1.0, 0.5),
 101           channel_count_label (_("Channels"), 1.0, 0.5),
 102           header_format_label (_("File Type"), 1.0, 0.5),
 103           bitdepth_format_label (_("Sample Format"), 1.0, 0.5),
 104           endian_format_label (_("Sample Endianness"), 1.0, 0.5),
 105           sample_rate_label (_("Sample Rate"), 1.0, 0.5),
 106           src_quality_label (_("Conversion Quality"), 1.0, 0.5),
 107           dither_type_label (_("Dither Type"), 1.0, 0.5),
 108           cuefile_only_checkbox (_("Export CD Marker File Only")),
 109           file_frame (_("Export to File")),
 110           file_browse_button (_("Browse")),
 111           track_selector_button (_("Specific tracks ..."))
 112 {
 113         guint32 n;
 114         guint32 len;
 115         guint32 maxlen;
 116
 117         session = 0;
 118         track_and_master_selection_allowed = true;
 119         channel_count_selection_allowed = true;
 120         export_cd_markers_allowed = true;
 121
 122         set_title (_("ardour: export"));
 123         set_wmclass (X_("ardour_export"), "Ardour");
 124         set_name ("ExportWindow");
 125         add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
 126
 127         spec.running = false;
 128
 129         file_entry.set_name ("ExportFileNameEntry");
 130
 131         master_list = ListStore::create (exp_cols);
 132         master_selector.set_model (master_list);
 133
 134         master_selector.set_name ("ExportTrackSelector");
 135         master_selector.set_size_request (-1, 100);
 136         master_selector.append_column(_("Output"), exp_cols.output);
 137         master_selector.append_column_editable(_("Left"), exp_cols.left);
 138         master_selector.append_column_editable(_("Right"), exp_cols.right);
 139         master_selector.get_column(0)->set_min_width(100);
 140
 141         master_selector.get_column(1)->set_min_width(40);
 142         master_selector.get_column(1)->set_sizing(Gtk::TREE_VIEW_COLUMN_AUTOSIZE);
 143         master_selector.get_column(2)->set_min_width(40);
 144         master_selector.get_column(2)->set_sizing(Gtk::TREE_VIEW_COLUMN_AUTOSIZE);
 145         master_selector.get_selection()->set_mode (Gtk::SELECTION_NONE);
 146
 147         track_list = ListStore::create (exp_cols);
 148         track_selector.set_model (track_list);
 149
 150         track_selector.set_name ("ExportTrackSelector");
 151         track_selector.set_size_request (-1, 130);
 152         track_selector.append_column(_("Output"), exp_cols.output);
 153         track_selector.append_column_editable(_("Left"), exp_cols.left);
 154         track_selector.append_column_editable(_("Right"), exp_cols.right);
 155
 156         track_selector.get_column(0)->set_min_width(100);
 157         track_selector.get_column(1)->set_min_width(40);
 158         track_selector.get_column(1)->set_sizing(Gtk::TREE_VIEW_COLUMN_AUTOSIZE);
 159         track_selector.get_column(2)->set_min_width(40);
 160         track_selector.get_column(2)->set_sizing(Gtk::TREE_VIEW_COLUMN_AUTOSIZE);
 161         track_selector.get_selection()->set_mode (Gtk::SELECTION_NONE);
 162
 163         progress_bar.set_name ("ExportProgress");
 164
 165         format_frame.add (format_table);
 166         format_frame.set_name (FRAME_NAME);
 167
 168         track_scroll.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
 169         master_scroll.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
 170
 171         get_vbox()->pack_start (file_frame, false, false);
 172
 173         hpacker.set_spacing (5);
 174         hpacker.set_border_width (5);
 175         hpacker.pack_start (format_frame, false, false);
 176
 177         master_scroll.add (master_selector);
 178         track_scroll.add (track_selector);
 179
 180         master_scroll.set_size_request (220, 100);
 181         track_scroll.set_size_request (220, 100);
 182
 183         /* we may hide some of these later */
 184         track_vpacker.pack_start (master_scroll);
 185         track_vpacker.pack_start (track_scroll);
 186         track_vpacker.pack_start (track_selector_button, Gtk::PACK_EXPAND_PADDING);
 187
 188         hpacker.pack_start (track_vpacker);
 189
 190         get_vbox()->pack_start (hpacker);
 191
 192         track_selector_button.set_name ("EditorGTKButton");
 193         track_selector_button.signal_clicked().connect (mem_fun(*this, &ExportDialog::track_selector_button_click));
 194
 195         get_vbox()->pack_start (progress_bar, false, false);
 196
 197         Gtkmm2ext::set_size_request_to_display_given_text (file_entry, X_("Kg/quite/a/reasonable/size/for/files/i/think"), 5, 8);
 198
 199         file_hbox.set_spacing (5);
 200         file_hbox.set_border_width (5);
 201         file_hbox.pack_start (file_entry, true, true);
 202         file_hbox.pack_start (file_browse_button, false, false);
 203
 204         file_frame.add (file_hbox);
 205         file_frame.set_border_width (5);
 206         file_frame.set_name (FRAME_NAME);
 207
 208         /* pop_strings needs to be created on the stack because set_popdown_strings()
 209            takes a reference.
 210         */
 211
 212         vector<string> pop_strings = I18N (sample_rates);
 213         Gtkmm2ext::set_popdown_strings (sample_rate_combo, pop_strings);
 214         sample_rate_combo.set_active_text (pop_strings.front());
 215         pop_strings = I18N (src_quality);
 216         Gtkmm2ext::set_popdown_strings (src_quality_combo, pop_strings);
 217         src_quality_combo.set_active_text (pop_strings.front());
 218         pop_strings = I18N (dither_types);
 219         Gtkmm2ext::set_popdown_strings (dither_type_combo, pop_strings);
 220         dither_type_combo.set_active_text (pop_strings.front());
 221         pop_strings = I18N (channel_strings);
 222         Gtkmm2ext::set_popdown_strings (channel_count_combo, pop_strings);
 223         channel_count_combo.set_active_text (pop_strings.front());
 224         pop_strings = I18N ((const char **) sndfile_header_formats_strings);
 225         Gtkmm2ext::set_popdown_strings (header_format_combo, pop_strings);
 226         header_format_combo.set_active_text (pop_strings.front());
 227         pop_strings = I18N ((const char **) sndfile_bitdepth_formats_strings);
 228         Gtkmm2ext::set_popdown_strings (bitdepth_format_combo, pop_strings);
 229         bitdepth_format_combo.set_active_text (pop_strings.front());
 230         pop_strings = I18N ((const char **) sndfile_endian_formats_strings);
 231         Gtkmm2ext::set_popdown_strings (endian_format_combo, pop_strings);
 232         endian_format_combo.set_active_text (pop_strings.front());
 233         pop_strings = I18N (cue_file_types);
 234         Gtkmm2ext::set_popdown_strings (cue_file_combo, pop_strings);
 235         cue_file_combo.set_active_text (pop_strings.front());
 236
 237         /* this will re-sensitized as soon as a non RIFF/WAV
 238            header format is chosen.
 239         */
 240
 241         endian_format_combo.set_sensitive (false);
 242
 243         /* determine longest strings at runtime */
 244
 245         maxlen = 0;
 246         const char *longest = X_("gl"); /* translators: one ascender, one descender */
 247         string longest_str;
 248
 249         for (n = 0; n < SNDFILE_HEADER_FORMATS; ++n) {
 250                 if ((len = strlen (sndfile_header_formats_strings[n])) > maxlen) {
 251                         maxlen = len;
 252                         longest = sndfile_header_formats_strings[n];
 253                 }
 254         }
 255
 256         for (n = 0; n < SNDFILE_BITDEPTH_FORMATS; ++n) {
 257                 if ((len = strlen (sndfile_bitdepth_formats_strings[n])) > maxlen) {
 258                         maxlen = len;
 259                         longest = sndfile_bitdepth_formats_strings[n];
 260                 }
 261         }
 262
 263         for (n = 0; n < SNDFILE_ENDIAN_FORMATS; ++n) {
 264                 if ((len = strlen (sndfile_endian_formats_strings[n])) > maxlen) {
 265                         maxlen = len;
 266                         longest = sndfile_endian_formats_strings[n];
 267                 }
 268         }
 269
 270         longest_str = longest;
 271
 272         /* force ascender + descender */
 273
 274         longest_str[0] = 'g';
 275         longest_str[1] = 'l';
 276
 277         //Gtkmm2ext::set_size_request_to_display_given_text (header_format_combo, longest_str.c_str(), 5+FUDGE, 5);
 278
 279         // TRANSLATORS: "slereg" is "stereo" with ascender and descender substituted
 280         //Gtkmm2ext::set_size_request_to_display_given_text (channel_count_combo, _("slereg"), 5+FUDGE, 5);
 281
 282 /*      header_format_combo.set_focus_on_click (true);
 283         bitdepth_format_combo.set_focus_on_click (true);
 284         endian_format_combo.set_focus_on_click (true);
 285         channel_count_combo.set_focus_on_click (true);
 286         src_quality_combo.set_focus_on_click (true);
 287         dither_type_combo.set_focus_on_click (true);
 288         sample_rate_combo.set_focus_on_click (true);
 289         cue_file_combo.set_focus_on_click (true);
 290 */
 291         dither_type_label.set_name ("ExportFormatLabel");
 292         sample_rate_label.set_name ("ExportFormatLabel");
 293         src_quality_label.set_name ("ExportFormatLabel");
 294         channel_count_label.set_name ("ExportFormatLabel");
 295         header_format_label.set_name ("ExportFormatLabel");
 296         bitdepth_format_label.set_name ("ExportFormatLabel");
 297         endian_format_label.set_name ("ExportFormatLabel");
 298         cue_file_label.set_name ("ExportFormatLabel");
 299
 300         header_format_combo.set_name ("ExportFormatDisplay");
 301         bitdepth_format_combo.set_name ("ExportFormatDisplay");
 302         endian_format_combo.set_name ("ExportFormatDisplay");
 303         channel_count_combo.set_name ("ExportFormatDisplay");
 304         dither_type_combo.set_name ("ExportFormatDisplay");
 305         src_quality_combo.set_name ("ExportFormatDisplay");
 306         sample_rate_combo.set_name ("ExportFormatDisplay");
 307         cue_file_combo.set_name ("ExportFormatDisplay");
 308
 309         cuefile_only_checkbox.set_name ("ExportCheckbox");
 310
 311         format_table.set_homogeneous (false);
 312         format_table.set_border_width (5);
 313         format_table.set_col_spacings (5);
 314         format_table.set_row_spacings (5);
 315
 316         format_table.attach (channel_count_label, 0, 1, 0, 1);
 317         format_table.attach (channel_count_combo, 1, 2, 0, 1);
 318
 319         format_table.attach (header_format_label, 0, 1, 1, 2);
 320         format_table.attach (header_format_combo, 1, 2, 1, 2);
 321
 322         format_table.attach (bitdepth_format_label, 0, 1, 2, 3);
 323         format_table.attach (bitdepth_format_combo, 1, 2, 2, 3);
 324
 325         format_table.attach (endian_format_label, 0, 1, 3, 4);
 326         format_table.attach (endian_format_combo, 1, 2, 3, 4);
 327
 328         format_table.attach (sample_rate_label, 0, 1, 4, 5);
 329         format_table.attach (sample_rate_combo, 1, 2, 4, 5);
 330
 331         format_table.attach (src_quality_label, 0, 1, 5, 6);
 332         format_table.attach (src_quality_combo, 1, 2, 5, 6);
 333
 334         format_table.attach (dither_type_label, 0, 1, 6, 7);
 335         format_table.attach (dither_type_combo, 1, 2, 6, 7);
 336
 337         format_table.attach (cue_file_label, 0, 1, 7, 8);
 338         format_table.attach (cue_file_combo, 1, 2, 7, 8);
 339         format_table.attach (cuefile_only_checkbox, 0, 2, 8, 9);
 340
 341         file_entry.set_name ("ExportFileDisplay");
 342
 343         signal_delete_event().connect (mem_fun(*this, &ExportDialog::window_closed));
 344
 345         cancel_button = add_button (Stock::CANCEL, RESPONSE_CANCEL);
 346         cancel_button->signal_clicked().connect (mem_fun(*this, &ExportDialog::end_dialog));
 347         ok_button = add_button (_("Export"), RESPONSE_ACCEPT);
 348         ok_button->signal_clicked().connect (mem_fun(*this, &ExportDialog::do_export));
 349
 350         file_browse_button.set_name ("EditorGTKButton");
 351         file_browse_button.signal_clicked().connect (mem_fun(*this, &ExportDialog::browse));
 352
 353         channel_count_combo.signal_changed().connect (mem_fun(*this, &ExportDialog::channels_chosen));
 354         bitdepth_format_combo.signal_changed().connect (mem_fun(*this, &ExportDialog::bitdepth_chosen));
 355         header_format_combo.signal_changed().connect (mem_fun(*this, &ExportDialog::header_chosen));
 356         sample_rate_combo.signal_changed().connect (mem_fun(*this, &ExportDialog::sample_rate_chosen));
 357         cue_file_combo.signal_changed().connect (mem_fun(*this, &ExportDialog::cue_file_type_chosen));
 358 }
 359
 360 ExportDialog::~ExportDialog()
 361 {
 362 }
 363
 364 void
 365 ExportDialog::do_not_allow_track_and_master_selection()
 366 {
 367         track_and_master_selection_allowed = false;
 368         track_vpacker.set_no_show_all();
 369 }
 370
 371 void
 372 ExportDialog::do_not_allow_channel_count_selection()
 373 {
 374         channel_count_selection_allowed = false;
 375         channel_count_combo.set_no_show_all();
 376         channel_count_label.set_no_show_all();
 377 }
 378
 379 void
 380 ExportDialog::do_not_allow_export_cd_markers()
 381 {
 382         export_cd_markers_allowed = false;
 383         cue_file_label.set_no_show_all();
 384         cue_file_combo.set_no_show_all();
 385         cuefile_only_checkbox.set_no_show_all();
 386 }
 387
 388 void
 389 ExportDialog::connect_to_session (Session *s)
 390 {
 391         session = s;
 392         session->GoingAway.connect (mem_fun(*this, &Window::hide_all));
 393
 394         switch (session->frame_rate()) {
 395         case 22050:
 396                 sample_rate_combo.set_active_text (N_("22.05kHz"));
 397                 break;
 398         case 44100:
 399                 sample_rate_combo.set_active_text (N_("44.1kHz"));
 400                 break;
 401         case 48000:
 402                 sample_rate_combo.set_active_text (N_("48kHz"));
 403                 break;
 404         case 88200:
 405                 sample_rate_combo.set_active_text (N_("88.2kHz"));
 406                 break;
 407         case 96000:
 408                 sample_rate_combo.set_active_text (N_("96kHz"));
 409                 break;
 410         case 192000:
 411                 sample_rate_combo.set_active_text (N_("192kHz"));
 412                 break;
 413         default:
 414                 sample_rate_combo.set_active_text (N_("44.1kHz"));
 415                 break;
 416         }
 417
 418         src_quality_combo.set_sensitive (false);
 419
 420         set_state();
 421 }
 422
 423 void
 424 ExportDialog::set_state()
 425 {
 426         XMLNode* node = session->instant_xml(X_("ExportDialog"), session->path());
 427         XMLProperty* prop;
 428
 429         if (node) {
 430
 431                 if ((prop = node->property (X_("sample_rate"))) != 0) {
 432                         sample_rate_combo.set_active_text(prop->value());
 433                 }
 434                 if ((prop = node->property (X_("src_quality"))) != 0) {
 435                         src_quality_combo.set_active_text(prop->value());
 436                 }
 437                 if ((prop = node->property (X_("dither_type"))) != 0) {
 438                         dither_type_combo.set_active_text(prop->value());
 439                 }
 440                 if ((prop = node->property (X_("channel_count"))) != 0) {
 441                         channel_count_combo.set_active_text(prop->value());
 442                 }
 443                 if ((prop = node->property (X_("header_format"))) != 0) {
 444                         header_format_combo.set_active_text(prop->value());
 445                 }
 446                 if ((prop = node->property (X_("bitdepth_format"))) != 0) {
 447                         bitdepth_format_combo.set_active_text(prop->value());
 448                 }
 449                 if ((prop = node->property (X_("endian_format"))) != 0) {
 450                         endian_format_combo.set_active_text(prop->value());
 451                 }
 452                 if ((prop = node->property (X_("filename"))) != 0) {
 453                         file_entry.set_text(prop->value());
 454                 }
 455                 if ((prop = node->property (X_("cue_file_type"))) != 0) {
 456                         cue_file_combo.set_active_text(prop->value());
 457                 }
 458         }
 459
 460         header_chosen ();
 461         bitdepth_chosen();
 462         channels_chosen();
 463         sample_rate_chosen();
 464
 465         if (session->master_out()) {
 466                 track_scroll.hide ();
 467         } else {
 468                 master_scroll.hide ();
 469                 track_selector_button.hide ();
 470         }
 471
 472         if (!node) {
 473                 return;
 474         }
 475
 476         if (session->master_out()) {
 477                 XMLNode* master = find_named_node(*node, (X_("Master")));
 478                 int nchns;
 479
 480                 if (!master) {
 481
 482                         /* default is to use all */
 483                         if (channel_count_combo.get_active_text() == _("mono")) {
 484                                 nchns = 1;
 485                         } else {
 486                                 nchns = 2;
 487                         }
 488
 489                         TreeModel::Children rows = master_selector.get_model()->children();
 490                         for (uint32_t r = 0; r < session->master_out()->n_outputs(); ++r) {
 491                                 if (nchns == 2) {
 492                                         if (r % 2) {
 493                                                 rows[r][exp_cols.right] = true;
 494                                         } else {
 495                                                 rows[r][exp_cols.left] = true;
 496                                         }
 497                                 } else {
 498                                         rows[r][exp_cols.left] = true;
 499                                 }
 500                         }
 501
 502                 } else {
 503                         /* XXX use XML state */
 504                 }
 505         }
 506
 507         XMLNode* tracks = find_named_node(*node, (X_("Tracks")));
 508         if (!tracks) {
 509                 return;
 510         }
 511
 512         XMLNodeList track_list = tracks->children(X_("Track"));
 513         TreeModel::Children rows = track_selector.get_model()->children();
 514         TreeModel::Children::iterator ri = rows.begin();
 515         TreeModel::Row row;
 516
 517         for (XMLNodeIterator it = track_list.begin(); it != track_list.end(); ++it, ++ri) {
 518                 if (ri == rows.end()){
 519                         break;
 520                 }
 521
 522                 XMLNode* track = *it;
 523                 row = *ri;
 524
 525                 if ((prop = track->property(X_("channel1"))) != 0) {
 526                         if (prop->value() == X_("on")) {
 527                                 row[exp_cols.left] = true;
 528                         } else {
 529                                 row[exp_cols.left] = false;
 530                         }
 531                 }
 532
 533                 if ((prop = track->property(X_("channel2"))) != 0) {
 534                         if (prop->value() == X_("on")) {
 535                                 row[exp_cols.right] = true;
 536                         } else {
 537                                 row[exp_cols.right] = false;
 538                         }
 539                 }
 540         }
 541 }
 542
 543 void
 544 ExportDialog::save_state()
 545 {
 546         if (!session) {
 547                 return;
 548         }
 549
 550         XMLNode* node = new XMLNode(X_("ExportDialog"));
 551
 552         node->add_property(X_("sample_rate"), sample_rate_combo.get_active_text());
 553         node->add_property(X_("src_quality"), src_quality_combo.get_active_text());
 554         node->add_property(X_("dither_type"), dither_type_combo.get_active_text());
 555         node->add_property(X_("channel_count"), channel_count_combo.get_active_text());
 556         node->add_property(X_("header_format"), header_format_combo.get_active_text());
 557         node->add_property(X_("bitdepth_format"), bitdepth_format_combo.get_active_text());
 558         node->add_property(X_("endian_format"), endian_format_combo.get_active_text());
 559         node->add_property(X_("filename"), file_entry.get_text());
 560         node->add_property(X_("cue_file_type"), cue_file_combo.get_active_text());
 561
 562         XMLNode* tracks = new XMLNode(X_("Tracks"));
 563
 564         TreeModel::Children rows = track_selector.get_model()->children();
 565         TreeModel::Row row;
 566         for (TreeModel::Children::iterator ri = rows.begin(); ri != rows.end(); ++ri) {
 567                 XMLNode* track = new XMLNode(X_("Track"));
 568
 569                 row = *ri;
 570                 track->add_property(X_("channel1"), row[exp_cols.left] ? X_("on") : X_("off"));
 571                 track->add_property(X_("channel2"), row[exp_cols.right] ? X_("on") : X_("off"));
 572
 573                 tracks->add_child_nocopy(*track);
 574         }
 575         node->add_child_nocopy(*tracks);
 576
 577         session->add_instant_xml(*node, session->path());
 578 }
 579
 580 void
 581 ExportDialog::set_range (nframes_t start, nframes_t end)
 582 {
 583         spec.start_frame = start;
 584         spec.end_frame = end;
 585 }
 586
 587 gint
 588 ExportDialog::progress_timeout ()
 589 {
 590         progress_bar.set_fraction (spec.progress);
 591         return TRUE;
 592 }
 593
 594 void
 595 frames_to_cd_frames_string (char* buf, nframes_t when, nframes_t fr)
 596 {
 597
 598   long unsigned int remainder;
 599   int mins, secs, frames;
 600
 601         mins = when / (60 * fr);
 602         remainder = when - (mins * 60 * fr);
 603         secs = remainder / fr;
 604         remainder -= secs * fr;
 605         frames = remainder / (fr / 75);
 606         sprintf (buf, " %02d:%02d:%02d", mins, secs, frames);
 607
 608 }
 609
 610 struct LocationSortByStart {
 611     bool operator() (Location *a, Location *b) {
 612             return a->start() < b->start();
 613     }
 614 };
 615
 616 void
 617 ExportDialog::export_toc_file (Locations::LocationList& locations, const string& path)
 618 {
 619         if(!export_cd_markers_allowed){
 620                 return;
 621         }
 622
 623     string filepath = path + ".toc";
 624         ofstream out (filepath.c_str());
 625         long unsigned int last_end_time = spec.start_frame, last_start_time = spec.start_frame;
 626         int numtracks = 0;
 627         gchar buf[18];
 628
 629         if (!out) {
 630                 error << string_compose(_("Editor: cannot open \"%1\" as export file for CD toc file"), filepath) << endmsg;
 631                 return;
 632         }
 633         out << "CD_DA" << endl;
 634         out << "CD_TEXT {" << endl << "  LANGUAGE_MAP {" << endl << "    0 : EN" << endl << "  }" << endl;
 635         out << "  LANGUAGE 0 {" << endl << "    TITLE \"" << session->name() << "\"" << endl << "  }" << endl << "}" << endl;
 636
 637         Locations::LocationList::iterator i;
 638         Locations::LocationList temp;
 639
 640         for (i = locations.begin(); i != locations.end(); ++i) {
 641           if ((*i)->start() >= spec.start_frame && (*i)->end() <= spec.end_frame && (*i)->is_cd_marker() && !(*i)->is_end()) {
 642             temp.push_back (*i);
 643             if (!(*i)->is_mark()) {
 644               numtracks ++;
 645             }
 646           }
 647         }
 648
 649         if (numtracks == 0 ) {
 650                     /* the user supplied no track markers.
 651                        we now treat the session as one track.*/
 652
 653                     out << endl << "TRACK AUDIO" << endl;
 654
 655                     out << "COPY" << endl;
 656
 657                     out << "NO PRE_EMPHASIS" << endl;
 658
 659                     /* XXX add session properties for catalog etc.
 660                        (so far only the session name is used) */
 661
 662                     out << "CD_TEXT {" << endl << "  LANGUAGE 0 {" << endl << "     TITLE \"" << session->name() << "\"" << endl;
 663                     out << "  }" << endl << "}" << endl;
 664
 665                     out << "FILE \"" << path << "\" ";
 666                     out << "00:00:00 " ;
 667                     frames_to_cd_frames_string (buf, spec.end_frame - spec.start_frame, session->frame_rate());
 668                     out << buf << endl;
 669                     out << "START 00:00:00" << endl;
 670
 671                     last_start_time = spec.start_frame;
 672                     last_end_time = spec.end_frame;
 673         }
 674
 675         if (temp.size()) {
 676                 LocationSortByStart cmp;
 677                 temp.sort (cmp);
 678
 679                 for (i = temp.begin(); i != temp.end(); ++i) {
 680
 681                       if (!(*i)->is_mark()) {
 682                         /*this is a track */
 683                         out << endl << "TRACK AUDIO" << endl;
 684
 685                         if ((*i)->cd_info.find("scms") != (*i)->cd_info.end())  {
 686                           out << "NO ";
 687                         }
 688                         out << "COPY" << endl;
 689
 690                         if ((*i)->cd_info.find("preemph") != (*i)->cd_info.end())  {
 691                           out << "PRE_EMPHASIS" << endl;
 692                         } else {
 693                           out << "NO PRE_EMPHASIS" << endl;
 694                         }
 695
 696                         if ((*i)->cd_info.find("isrc") != (*i)->cd_info.end())  {
 697                           out << "ISRC \"" << (*i)->cd_info["isrc"] << "\"" << endl;
 698                         }
 699
 700                         out << "CD_TEXT {" << endl << "  LANGUAGE 0 {" << endl << "     TITLE \"" << (*i)->name() << "\"" << endl;
 701                         if ((*i)->cd_info.find("performer") != (*i)->cd_info.end()) {
 702                           out << "     PERFORMER \"" << (*i)->cd_info["performer"]  << "\"" << endl;
 703                         }
 704                         if ((*i)->cd_info.find("string_composer") != (*i)->cd_info.end()) {
 705                           out  << "     COMPOSER \"" << (*i)->cd_info["string_composer"] << "\"" << endl;
 706                         }
 707
 708                         if ((*i)->cd_info.find("isrc") != (*i)->cd_info.end()) {
 709                           out  << "     ISRC \"";
 710                           out << (*i)->cd_info["isrc"].substr(0,2) << "-";
 711                           out << (*i)->cd_info["isrc"].substr(2,3) << "-";
 712                           out << (*i)->cd_info["isrc"].substr(5,2) << "-";
 713                           out << (*i)->cd_info["isrc"].substr(7,5) << "\"" << endl;
 714                         }
 715
 716                         out << "  }" << endl << "}" << endl;
 717
 718                         frames_to_cd_frames_string (buf, last_end_time - spec.start_frame, session->frame_rate());
 719                         out << "FILE \"" << path << "\" " << buf;
 720
 721                         frames_to_cd_frames_string (buf, (*i)->end() - last_end_time, session->frame_rate());
 722                         out << buf << endl;
 723
 724                         frames_to_cd_frames_string (buf, (*i)->start() - last_end_time, session->frame_rate());
 725                         out << "START" << buf << endl;
 726
 727                         last_start_time = (*i)->start();
 728                         last_end_time = (*i)->end();
 729
 730
 731                       } else  if ((*i)->start() < last_end_time) {
 732                         /* this is an index within a track */
 733
 734                         frames_to_cd_frames_string (buf, (*i)->start() - last_start_time, session->frame_rate());
 735                         out << "INDEX" << buf << endl;
 736                       }
 737                 }
 738         }
 739
 740 }
 741
 742 void
 743 ExportDialog::export_cue_file (Locations::LocationList& locations, const string& path)
 744 {
 745         if(!export_cd_markers_allowed){
 746                 return;
 747         }
 748
 749     string filepath = path + ".cue";
 750         ofstream out (filepath.c_str());
 751         gchar buf[18];
 752         long unsigned int last_track_end = spec.start_frame;
 753         int numtracks = 0, tracknum = 0, indexnum = 0;
 754
 755         if (!out) {
 756                 error << string_compose(_("Editor: cannot open \"%1\" as export file for CD cue file"), filepath) << endmsg;
 757                 return;
 758         }
 759
 760         Locations::LocationList::iterator i;
 761         Locations::LocationList temp;
 762
 763         for (i = locations.begin(); i != locations.end(); ++i) {
 764                 if ((*i)->start() >= spec.start_frame && (*i)->end() <= spec.end_frame && (*i)->is_cd_marker() && !(*i)->is_end()) {
 765                         temp.push_back (*i);
 766                         if (!(*i)->is_mark()) {
 767                                 numtracks++;
 768                         }
 769                 }
 770         }
 771
 772         out << "REM Cue file generated by Ardour" << endl;
 773         out << "TITLE \"" << session->name() << "\"" << endl;
 774
 775         if ((header_format_combo.get_active_text() == N_("WAV"))) {
 776                   out << "FILE " << path  << " WAVE" << endl;
 777         } else {
 778                   out << "FILE " << path  << ' ' << (header_format_combo.get_active_text()) << endl;
 779         }
 780
 781         if (numtracks == 0) {
 782                     /* the user has supplied no track markers.
 783                        the entire export is treated as one track.
 784                     */
 785
 786                   numtracks++;
 787                   tracknum++;
 788                   indexnum = 0;
 789                   out << endl << "TRACK " << tracknum << " AUDIO" << endl;
 790                   out << "FLAGS " ;
 791
 792                   out << "DCP " << endl;
 793
 794                   /* use the session name*/
 795
 796                   if (session->name() != "") {
 797                     out << "TITLE \"" << session->name() << "\"" << endl;
 798                   }
 799
 800                   /* no pregap in this case */
 801
 802                   out << "INDEX 00 00:00:00" << endl;
 803                   indexnum++;
 804                   out << "INDEX 01 00:00:00" << endl;
 805                   indexnum++;
 806                   last_track_end = spec.end_frame;
 807         }
 808
 809         if (temp.size()) {
 810                 LocationSortByStart cmp;
 811                 temp.sort (cmp);
 812
 813                 for ( i = temp.begin(); i != temp.end(); ++i) {
 814
 815                     if (!(*i)->is_mark() && ((*i)->start() >= last_track_end)) {
 816                       /* this is a track and it doesn't start inside another one*/
 817
 818                       tracknum++;
 819                       indexnum = 0;
 820                       out << endl << "TRACK " << tracknum << " AUDIO" << endl;
 821                       out << "FLAGS " ;
 822
 823                       if ((*i)->cd_info.find("scms") != (*i)->cd_info.end())  {
 824                         out << "SCMS ";
 825                       } else {
 826                         out << "DCP ";
 827                       }
 828
 829                       if ((*i)->cd_info.find("preemph") != (*i)->cd_info.end())  {
 830                         out << "PRE";
 831                       }
 832                       out << endl;
 833
 834                       if ((*i)->cd_info.find("isrc") != (*i)->cd_info.end())  {
 835                         out << "ISRC " << (*i)->cd_info["isrc"] << endl;
 836
 837                       }
 838                       if ((*i)->name() != "") {
 839                         out << "TITLE \"" << (*i)->name() << "\"" << endl;
 840                       }
 841
 842                       if ((*i)->cd_info.find("performer") != (*i)->cd_info.end()) {
 843                         out << "PERFORMER \"" <<  (*i)->cd_info["performer"] << "\"" << endl;
 844                       }
 845
 846                       if ((*i)->cd_info.find("string_composer") != (*i)->cd_info.end()) {
 847                         out << "SONGWRITER \"" << (*i)->cd_info["string_composer"]  << "\"" << endl;
 848                       }
 849                         snprintf (buf, sizeof(buf), "INDEX %02d", indexnum);
 850                         out << buf;
 851                         frames_to_cd_frames_string (buf, last_track_end - spec.start_frame, session->frame_rate());
 852                         out << buf << endl;
 853                         indexnum++;
 854                         last_track_end = (*i)->end();
 855                     }
 856                     if ((tracknum > 0) && ((*i)->start() < last_track_end)) {
 857                       /*this is an index and it lies within a track*/
 858                       snprintf (buf, sizeof(buf), "INDEX %02d", indexnum);
 859                       out << buf;
 860                       frames_to_cd_frames_string (buf,(*i)->start() - spec.start_frame, session->frame_rate());
 861                       out << buf << endl;
 862                       indexnum++;
 863                     }
 864                 }
 865         }
 866
 867 }
 868
 869 void
 870 ExportDialog::do_export_cd_markers (const string& path,const string& cuefile_type)
 871 {
 872         if (cuefile_type == "TOC") {
 873                 session->locations()->apply (*this, &ExportDialog::export_toc_file, path);
 874         } else {
 875                 session->locations()->apply (*this, &ExportDialog::export_cue_file, path);
 876         }
 877 }
 878
 879
 880 void
 881 ExportDialog::do_export ()
 882 {
 883         string filepath = file_entry.get_text();
 884
 885         if(!is_filepath_valid(filepath)){
 886                 return;
 887         }
 888
 889         if (export_cd_markers_allowed) {
 890                 if (cue_file_combo.get_active_text () != _("None")) {
 891                         do_export_cd_markers (file_entry.get_text(), cue_file_combo.get_active_text ());
 892                 }
 893
 894                 if (cuefile_only_checkbox.get_active()) {
 895                         end_dialog ();
 896                         return;
 897                 }
 898         }
 899
 900         ok_button->set_sensitive(false);
 901         save_state();
 902
 903         set_modal (true);
 904
 905         // read user input into spec
 906         initSpec(filepath);
 907
 908         progress_connection = Glib::signal_timeout().connect (mem_fun(*this, &ExportDialog::progress_timeout), 100);
 909         cancel_label.set_text (_("Stop Export"));
 910
 911         export_audio_data();
 912
 913         progress_connection.disconnect ();
 914         end_dialog ();
 915 }
 916
 917 void
 918 ExportDialog::end_dialog ()
 919 {
 920
 921         if (spec.running) {
 922                 spec.stop = true;
 923
 924                 while (spec.running) {
 925                         if (gtk_events_pending()) {
 926                                 gtk_main_iteration ();
 927                         } else {
 928                                 usleep (10000);
 929                         }
 930                 }
 931         }
 932
 933         session->engine().freewheel (false);
 934
 935         hide_all ();
 936
 937         set_modal (false);
 938         ok_button->set_sensitive(true);
 939 }
 940
 941 void
 942 ExportDialog::start_export ()
 943 {
 944         if (session == 0) {
 945                 return;
 946         }
 947
 948         /* If the filename hasn't been set before, use the
 949            current session's export directory as a default
 950            location for the export.
 951         */
 952
 953         if (file_entry.get_text().length() == 0) {
 954                 string dir = session->export_dir();
 955                 string::size_type last_slash;
 956
 957                 if ((last_slash = dir.find_last_of ('/')) != string::npos && last_slash != 0) {
 958                         dir = dir.substr (0, last_slash+1);
 959                 }
 960
 961                 if (!wants_dir()) {
 962                         dir = dir + "export.wav";
 963                 }
 964
 965                 file_entry.set_text (dir);
 966         }
 967
 968         progress_bar.set_fraction (0);
 969         cancel_label.set_text (_("Cancel"));
 970
 971         show_all ();
 972
 973         if (session->master_out()) {
 974                 track_scroll.hide ();
 975         } else {
 976                 master_scroll.hide ();
 977                 track_selector_button.hide ();
 978         }
 979 }
 980
 981 void
 982 ExportDialog::header_chosen ()
 983 {
 984         if (sndfile_header_format_from_string (header_format_combo.get_active_text ()) == SF_FORMAT_WAV) {
 985                 endian_format_combo.set_sensitive (false);
 986         } else {
 987                 endian_format_combo.set_sensitive (true);
 988         }
 989 }
 990
 991 void
 992 ExportDialog::bitdepth_chosen ()
 993 {
 994         int format = sndfile_bitdepth_format_from_string (bitdepth_format_combo.get_active_text ());
 995         switch (format) {
 996         case SF_FORMAT_PCM_24:
 997         case SF_FORMAT_PCM_32:
 998         case SF_FORMAT_FLOAT:
 999                 dither_type_combo.set_sensitive (false);
1000                 break;
1001
1002         default:
1003                 dither_type_combo.set_sensitive (true);
1004                 break;
1005         }
1006 }
1007
1008 void
1009 ExportDialog::cue_file_type_chosen ()
1010 {
1011         if (cue_file_combo.get_active_text () != "None") {
1012                 cuefile_only_checkbox.set_sensitive (true);
1013         } else {
1014                 cuefile_only_checkbox.set_active (false);
1015                 cuefile_only_checkbox.set_sensitive (false);
1016         }
1017 }
1018
1019 void
1020 ExportDialog::sample_rate_chosen ()
1021 {
1022         string sr_str = sample_rate_combo.get_active_text();
1023         nframes_t rate;
1024
1025         if (sr_str == N_("22.05kHz")) {
1026                 rate = 22050;
1027         } else if (sr_str == N_("44.1kHz")) {
1028                 rate = 44100;
1029         } else if (sr_str == N_("48kHz")) {
1030                 rate = 48000;
1031         } else if (sr_str == N_("88.2kHz")) {
1032                 rate = 88200;
1033         } else if (sr_str == N_("96kHz")) {
1034                 rate = 96000;
1035         } else if (sr_str == N_("192kHz")) {
1036                 rate = 192000;
1037         } else {
1038                 rate = session->frame_rate();
1039         }
1040
1041         if (rate != session->frame_rate()) {
1042                 src_quality_combo.set_sensitive (true);
1043         } else {
1044                 src_quality_combo.set_sensitive (false);
1045         }
1046 }
1047
1048 void
1049 ExportDialog::channels_chosen ()
1050 {
1051         bool mono;
1052
1053         mono = (channel_count_combo.get_active_text() == _("mono"));
1054
1055         if (mono) {
1056                 track_selector.get_column(2)->set_visible(false);
1057                 track_selector.get_column(1)->set_title(_("Export"));
1058
1059                 if (session->master_out()) {
1060                         master_selector.get_column(2)->set_visible(false);
1061                         master_selector.get_column(1)->set_title(_("Export"));
1062                 }
1063
1064         } else {
1065                 track_selector.get_column(2)->set_visible(true);
1066                 track_selector.get_column(1)->set_title(_("Left"));
1067
1068                 if (session->master_out()) {
1069                         master_selector.get_column(2)->set_visible(true);
1070                         master_selector.get_column(1)->set_title(_("Left"));
1071                 }
1072         }
1073
1074         fill_lists();
1075 }
1076
1077 void
1078 ExportDialog::fill_lists ()
1079 {
1080         track_list->clear();
1081         master_list->clear();
1082
1083         boost::shared_ptr<Session::RouteList> routes = session->get_routes ();
1084
1085         for (Session::RouteList::iterator ri = routes->begin(); ri != routes->end(); ++ri) {
1086
1087                 boost::shared_ptr<Route> route = (*ri);
1088
1089                 if (route->hidden()) {
1090                         continue;
1091                 }
1092
1093                 for (uint32_t i=0; i < route->n_outputs(); ++i) {
1094                         string name;
1095                         if (route->n_outputs() == 1) {
1096                                 name = route->name();
1097                         } else {
1098                                 name = string_compose("%1: out-%2", route->name(), i+1);
1099                         }
1100
1101                         if (route == session->master_out()) {
1102                                 TreeModel::iterator iter = master_list->append();
1103                                 TreeModel::Row row = *iter;
1104                                 row[exp_cols.output] = name;
1105                                 row[exp_cols.left] = false;
1106                                 row[exp_cols.right] = false;
1107                                 row[exp_cols.port] = route->output (i);
1108                         } else {
1109                                 TreeModel::iterator iter = track_list->append();
1110                                 TreeModel::Row row = *iter;
1111                                 row[exp_cols.output] = name;
1112                                 row[exp_cols.left] = false;
1113                                 row[exp_cols.right] = false;
1114                                 row[exp_cols.port] = route->output (i);
1115                         }
1116                 }
1117         }
1118 }
1119
1120
1121 bool
1122 ExportDialog::is_filepath_valid(string &filepath)
1123 {
1124         // sanity check file name first
1125
1126         struct stat statbuf;
1127
1128         if (filepath.empty()) {
1129                 string txt = _("Please enter a valid filename.");
1130                 MessageDialog msg (*this, txt, false, MESSAGE_ERROR, BUTTONS_OK, true);
1131                 msg.run();
1132                 return false;
1133         }
1134
1135         // check if file exists already and warn
1136
1137         if (stat (filepath.c_str(), &statbuf) == 0) {
1138                 if (S_ISDIR (statbuf.st_mode)) {
1139                         string txt = _("Please specify a complete filename for the audio file.");
1140                         MessageDialog msg (*this, txt, false, MESSAGE_ERROR, BUTTONS_OK, true);
1141                         msg.run();
1142                         return false;
1143                 }
1144                 else {
1145                         string txt = _("File already exists, do you want to overwrite it?");
1146                         MessageDialog msg (*this, txt, false, MESSAGE_QUESTION, BUTTONS_YES_NO, true);
1147                         if ((ResponseType) msg.run() == Gtk::RESPONSE_NO) {
1148                                 return false;
1149                         }
1150                 }
1151         }
1152
1153         // directory needs to exist and be writable
1154
1155         string dirpath = Glib::path_get_dirname (filepath);
1156         if (::access (dirpath.c_str(), W_OK) != 0) {
1157                 string txt = _("Cannot write file in: ") + dirpath;
1158                 MessageDialog msg (*this, txt, false, MESSAGE_ERROR, BUTTONS_OK, true);
1159                 msg.run();
1160                 return false;
1161         }
1162
1163         return true;
1164 }
1165
1166 void
1167 ExportDialog::initSpec(string &filepath)
1168 {
1169         spec.path = filepath;
1170         spec.progress = 0;
1171         spec.running = true;
1172         spec.stop = false;
1173         spec.port_map.clear();
1174
1175         if (channel_count_combo.get_active_text() == _("mono")) {
1176                 spec.channels = 1;
1177         } else {
1178                 spec.channels = 2;
1179         }
1180
1181         spec.format = 0;
1182
1183         spec.format |= sndfile_header_format_from_string (header_format_combo.get_active_text ());
1184
1185         if ((spec.format & SF_FORMAT_WAV) == 0) {
1186                 /* RIFF/WAV specifies endianess */
1187                 spec.format |= sndfile_endian_format_from_string (endian_format_combo.get_active_text ());
1188         }
1189
1190         spec.format |= sndfile_bitdepth_format_from_string (bitdepth_format_combo.get_active_text ());
1191
1192         string sr_str = sample_rate_combo.get_active_text();
1193         if (sr_str == N_("22.05kHz")) {
1194                 spec.sample_rate = 22050;
1195         } else if (sr_str == N_("44.1kHz")) {
1196                 spec.sample_rate = 44100;
1197         } else if (sr_str == N_("48kHz")) {
1198                 spec.sample_rate = 48000;
1199         } else if (sr_str == N_("88.2kHz")) {
1200                 spec.sample_rate = 88200;
1201         } else if (sr_str == N_("96kHz")) {
1202                 spec.sample_rate = 96000;
1203         } else if (sr_str == N_("192kHz")) {
1204                 spec.sample_rate = 192000;
1205         } else {
1206                 spec.sample_rate = session->frame_rate();
1207         }
1208
1209         string src_str = src_quality_combo.get_active_text();
1210         if (src_str == _("fastest")) {
1211                 spec.src_quality = SRC_ZERO_ORDER_HOLD;
1212         } else if (src_str == _("linear")) {
1213                 spec.src_quality = SRC_LINEAR;
1214         } else if (src_str == _("better")) {
1215                 spec.src_quality = SRC_SINC_FASTEST;
1216         } else if (src_str == _("intermediate")) {
1217                 spec.src_quality = SRC_SINC_MEDIUM_QUALITY;
1218         } else {
1219                 spec.src_quality = SRC_SINC_BEST_QUALITY;
1220         }
1221
1222         string dither_str = dither_type_combo.get_active_text();
1223         if (dither_str == _("None")) {
1224                 spec.dither_type = GDitherNone;
1225         } else if (dither_str == _("Rectangular")) {
1226                 spec.dither_type = GDitherRect;
1227         } else if (dither_str == _("Triangular")) {
1228                 spec.dither_type = GDitherTri;
1229         } else {
1230                 spec.dither_type = GDitherShaped;
1231         }
1232
1233         write_track_and_master_selection_to_spec();
1234 }
1235
1236
1237 void
1238 ExportDialog::write_track_and_master_selection_to_spec()
1239 {
1240         if(!track_and_master_selection_allowed){
1241                 return;
1242         }
1243
1244         uint32_t chan=0;
1245         Port *last_port = 0;
1246
1247         TreeModel::Children rows = master_selector.get_model()->children();
1248         TreeModel::Children::iterator ri;
1249         TreeModel::Row row;
1250         for (ri = rows.begin(); ri != rows.end(); ++ri) {
1251                 row = *ri;
1252                 Port* port = row[exp_cols.port];
1253
1254                 if (last_port != port) {
1255                         chan = 0;
1256                 }
1257
1258                 if (row[exp_cols.left]) {
1259                         spec.port_map[0].push_back (std::pair<Port*,uint32_t>(port, chan));
1260                 }
1261
1262                 if (spec.channels == 2) {
1263                         if (row[exp_cols.right]) {
1264                                 spec.port_map[1].push_back (std::pair<Port*,uint32_t>(port, chan));
1265                         }
1266                 }
1267         }
1268
1269         chan = 0;
1270         rows = track_selector.get_model()->children();
1271
1272         for (ri = rows.begin(); ri != rows.end(); ++ri) {
1273                 row = *ri;
1274
1275                 Port* port = row[exp_cols.port];
1276
1277                 if (last_port != port) {
1278                         chan = 0;
1279                 }
1280
1281                 if (row[exp_cols.left]) {
1282                         spec.port_map[0].push_back (std::pair<Port*,uint32_t>(port, chan));
1283                 }
1284
1285                 if (spec.channels == 2) {
1286                         if (row[exp_cols.right]) {
1287                                 spec.port_map[1].push_back (std::pair<Port*,uint32_t>(port, chan));
1288                         }
1289
1290                 }
1291
1292                 last_port = port;
1293                 ++chan;
1294         }
1295 }
1296
1297
1298 gint
1299 ExportDialog::window_closed (GdkEventAny *ignored)
1300 {
1301         end_dialog ();
1302         return TRUE;
1303 }
1304
1305 void
1306 ExportDialog::browse ()
1307 {
1308         FileChooserDialog dialog("Export to file", FILE_CHOOSER_ACTION_SAVE);
1309         dialog.set_transient_for(*this);
1310         dialog.set_filename (file_entry.get_text());
1311
1312         dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
1313         dialog.add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
1314
1315         int result = dialog.run();
1316
1317         if (result == Gtk::RESPONSE_OK) {
1318                 string filename = dialog.get_filename();
1319
1320                 if (filename.length()) {
1321                         file_entry.set_text (filename);
1322                 }
1323         }
1324 }
1325
1326 void
1327 ExportDialog::track_selector_button_click ()
1328 {
1329         if (track_scroll.is_visible ()) {
1330                 track_scroll.hide ();
1331         } else {
1332                 track_scroll.show_all ();
1333         }
1334 }