gtk2_ardour/add_video_dialog.cc

   1 /*
   2     Copyright (C) 2010-2013 Paul Davis
   3     Author: Robin Gareus <robin@gareus.org>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20 #include <cstdio>
  21 #include <cmath>
  22
  23 #include <sigc++/bind.h>
  24 #include <curl/curl.h>
  25
  26 #include "pbd/error.h"
  27 #include "pbd/convert.h"
  28 #include "gtkmm2ext/utils.h"
  29 #include "gtkmm2ext/rgb_macros.h"
  30 #include "ardour/session_directory.h"
  31 #include "ardour/profile.h"
  32 #include "ardour/template_utils.h"
  33 #include "ardour/session.h"
  34 #include "ardour_ui.h"
  35
  36 #include "utils.h"
  37 #include "add_video_dialog.h"
  38 #include "utils_videotl.h"
  39 #include "i18n.h"
  40
  41 using namespace Gtk;
  42 using namespace std;
  43 using namespace PBD;
  44 using namespace ARDOUR;
  45 using namespace VideoUtils;
  46
  47 #define PREVIEW_WIDTH (240)
  48 #define PREVIEW_HEIGHT (180)
  49
  50 #ifndef MIN
  51 #define MIN(a,b) ( (a) < (b) ? (a) : (b) )
  52 #endif
  53
  54 AddVideoDialog::AddVideoDialog (Session* s)
  55         : ArdourDialog (_("Set Video Track"))
  56         , seek_slider (0,1000,1)
  57         , preview_path ("")
  58         , pi_tcin ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  59         , pi_tcout ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  60         , pi_aspect ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  61         , pi_fps ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  62         , chooser (FILE_CHOOSER_ACTION_OPEN)
  63         , xjadeo_checkbox (_("Launch External Video Monitor"))
  64         , set_session_fps_checkbox (_("Adjust Session Framerate to Match Video Framerate"))
  65         , harvid_path ("")
  66         , harvid_reset (_("Reload docroot"))
  67         , harvid_list (ListStore::create(harvid_list_columns))
  68         , harvid_list_view (harvid_list)
  69 {
  70         set_session (s);
  71         set_name ("AddVideoDialog");
  72         set_modal (true);
  73         set_skip_taskbar_hint (true);
  74         set_resizable (true);
  75         set_size_request (800, -1);
  76
  77         harvid_initialized = false;
  78         std::string dstdir = video_dest_dir(_session->session_directory().video_path(), video_get_docroot(Config));
  79
  80         if (Config->get_video_advanced_setup()) {
  81
  82                 /* Harvid Browser */
  83                 harvid_list_view.append_column("", pixBufRenderer);
  84                 harvid_list_view.append_column(_("Filename"), harvid_list_columns.filename);
  85
  86                 harvid_list_view.get_column(0)->set_alignment(0.5);
  87                 harvid_list_view.get_column(0)->add_attribute(pixBufRenderer, "stock-id", harvid_list_columns.id);
  88                 harvid_list_view.get_column(1)->set_expand(true);
  89                 harvid_list_view.get_column(1)->set_sort_column(harvid_list_columns.filename);
  90                 harvid_list_view.set_enable_search(true);
  91                 harvid_list_view.set_search_column(1);
  92
  93                 harvid_list_view.get_selection()->set_mode (SELECTION_SINGLE);
  94
  95                 harvid_list_view.get_selection()->signal_changed().connect(sigc::mem_fun(*this, &AddVideoDialog::harvid_list_view_selected));
  96                 harvid_list_view.signal_row_activated().connect (sigc::mem_fun (*this, &AddVideoDialog::harvid_list_view_activated));
  97
  98                 VBox* vbox = manage (new VBox);
  99                 Gtk::ScrolledWindow *scroll = manage(new ScrolledWindow);
 100                 scroll->add(harvid_list_view);
 101                 scroll->set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
 102
 103                 HBox* hbox = manage (new HBox);
 104                 harvid_path.set_alignment (0, 0.5);
 105                 hbox->pack_start (harvid_path, true, true);
 106                 hbox->pack_start (harvid_reset, false, false);
 107
 108                 vbox->pack_start (*hbox, false, false);
 109                 vbox->pack_start (*scroll, true, true);
 110
 111                 notebook.append_page (*vbox, _("VideoServerIndex"));
 112         } else {
 113                 /* dummy entry */
 114                 VBox* vbox = manage (new VBox);
 115                 notebook.append_page (*vbox, _("VideoServerIndex"));
 116         }
 117
 118         /* file chooser */
 119         chooser.set_border_width (4);
 120 #ifdef GTKOSX
 121         /* some broken redraw behaviour - this is a bandaid */
 122         chooser.signal_selection_changed().connect (mem_fun (chooser, &Widget::queue_draw));
 123 #endif
 124         chooser.set_current_folder (dstdir);
 125
 126         Gtk::FileFilter video_filter;
 127         Gtk::FileFilter matchall_filter;
 128         video_filter.add_custom (FILE_FILTER_FILENAME, mem_fun(*this, &AddVideoDialog::on_video_filter));
 129         video_filter.set_name (_("Video files"));
 130
 131         matchall_filter.add_pattern ("*.*");
 132         matchall_filter.set_name (_("All files"));
 133
 134         chooser.add_filter (video_filter);
 135         chooser.add_filter (matchall_filter);
 136         chooser.set_select_multiple (false);
 137
 138         VBox* vboxfb = manage (new VBox);
 139         vboxfb->pack_start (chooser, true, true, 0);
 140
 141         if (video_get_docroot(Config).size() > 0 &&
 142                         Config->get_video_advanced_setup()) {
 143                 notebook.append_page (*vboxfb, _("Browse Files"));
 144         }
 145
 146         /* Global Options*/
 147         Gtk::Label* l;
 148         VBox* options_box = manage (new VBox);
 149
 150         l = manage (new Label (_("<b>Options</b>"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 151         l->set_use_markup ();
 152
 153         options_box->pack_start (*l, false, true, 4);
 154         options_box->pack_start (xjadeo_checkbox, false, true, 2);
 155         options_box->pack_start (set_session_fps_checkbox, false, true, 2);
 156
 157         /* preview pane */
 158         VBox* previewpane = manage (new VBox);
 159         Gtk::Table *table = manage(new Table(5,2));
 160
 161         table->set_row_spacings(2);
 162         table->set_col_spacings(4);
 163
 164         l = manage (new Label (_("<b>Video Information</b>"), Gtk::ALIGN_CENTER, Gtk::ALIGN_CENTER, false));
 165         l->set_use_markup ();
 166         table->attach (*l, 0, 2, 0, 1, FILL, FILL);
 167         l = manage (new Label (_("Start:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 168         table->attach (*l, 0, 1, 1, 2, FILL, FILL);
 169         table->attach (pi_tcin, 1, 2, 1, 2, FILL, FILL);
 170         l = manage (new Label (_("End:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 171         table->attach (*l, 0, 1, 2, 3, FILL, FILL);
 172         table->attach (pi_tcout, 1, 2, 2, 3, FILL, FILL);
 173         l = manage (new Label (_("Frame rate:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 174         table->attach (*l, 0, 1, 3, 4, FILL, FILL);
 175         table->attach (pi_fps, 1, 2, 3, 4, FILL, FILL);
 176         l = manage (new Label (_("Aspect Ratio:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 177         table->attach (*l, 0, 1, 4, 5, FILL, FILL);
 178         table->attach (pi_aspect, 1, 2, 4, 5, FILL, FILL);
 179
 180         preview_image = manage(new Gtk::Image);
 181
 182         imgbuf = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, PREVIEW_WIDTH, PREVIEW_HEIGHT);
 183         imgbuf->fill(RGBA_TO_UINT(127,0,0,255));
 184         preview_image->set(imgbuf);
 185         seek_slider.set_draw_value(false);
 186
 187         HBox* hbox = manage (new HBox);
 188         hbox->pack_start (*table, true, false);
 189
 190         Gtk::Alignment *al = manage(new Gtk::Alignment());
 191         al->set_size_request(-1, 20);
 192
 193         previewpane->pack_start (*preview_image, false, false);
 194         previewpane->pack_start (seek_slider, false, false);
 195         previewpane->pack_start (*al, false, false);
 196         previewpane->pack_start (*hbox, true, true, 6);
 197
 198         /* Overall layout */
 199         hbox = manage (new HBox);
 200         if (Config->get_video_advanced_setup()) {
 201                 hbox->pack_start (notebook, true, true);
 202         } else {
 203                 hbox->pack_start (*vboxfb, true, true);
 204         }
 205         hbox->pack_start (*previewpane, false, false);
 206
 207         get_vbox()->set_spacing (4);
 208         get_vbox()->pack_start (*hbox, true, true);
 209         get_vbox()->pack_start (*options_box, false, false);
 210
 211
 212         /* xjadeo checkbox */
 213         if (ARDOUR_UI::instance()->video_timeline->found_xjadeo()
 214                         /* TODO xjadeo setup w/ xjremote */
 215                         && video_get_docroot(Config).size() > 0) {
 216                 xjadeo_checkbox.set_active(true);  /* set in ardour_ui.cpp ?! */
 217         } else {
 218                 printf("xjadeo was not found or video-server docroot is unset (remote video-server)\n");
 219                 xjadeo_checkbox.set_active(false);
 220                 xjadeo_checkbox.set_sensitive(false);
 221         }
 222
 223         /* FPS checkbox */
 224         set_session_fps_checkbox.set_active(true);
 225
 226         /* Buttons */
 227         add_button (Stock::CANCEL, RESPONSE_CANCEL);
 228         ok_button = add_button (Stock::OK, RESPONSE_ACCEPT);
 229         //ok_button->set_sensitive(false);
 230         set_action_ok(false);
 231
 232         /* connect signals after eveything has been initialized */
 233         chooser.signal_selection_changed().connect (mem_fun (*this, &AddVideoDialog::file_selection_changed));
 234         chooser.signal_file_activated().connect (mem_fun (*this, &AddVideoDialog::file_activated));
 235         //chooser.signal_update_preview().connect(sigc::mem_fun(*this, &AddVideoDialog::update_preview));
 236         notebook.signal_switch_page().connect (sigc::hide_return (sigc::hide (sigc::hide (sigc::mem_fun (*this, &AddVideoDialog::page_switch)))));
 237         seek_slider.signal_value_changed().connect(sigc::mem_fun(*this, &AddVideoDialog::seek_preview));
 238         harvid_reset.signal_clicked().connect (sigc::mem_fun (*this, &AddVideoDialog::harvid_load_docroot));
 239
 240         show_all_children ();
 241 }
 242
 243 AddVideoDialog::~AddVideoDialog ()
 244 {
 245 }
 246
 247 void
 248 AddVideoDialog::on_show ()
 249 {
 250         Dialog::on_show ();
 251 }
 252
 253 static bool check_video_file_extension(std::string file)
 254 {
 255         const char* suffixes[] = {
 256                 ".avi"     , ".AVI"     ,
 257                 ".mov"     , ".MOV"     ,
 258                 ".ogg"     , ".OGG"     ,
 259                 ".ogv"     , ".OGV"     ,
 260                 ".mpg"     , ".MPG"     ,
 261                 ".mov"     , ".MOV"     ,
 262                 ".mp4"     , ".MP4"     ,
 263                 ".mkv"     , ".MKV"     ,
 264                 ".vob"     , ".VOB"     ,
 265                 ".asf"     , ".ASF"     ,
 266                 ".avs"     , ".AVS"     ,
 267                 ".dts"     , ".DTS"     ,
 268                 ".flv"     , ".FLV"     ,
 269                 ".m4v"     , ".M4V"     ,
 270                 ".matroska", ".MATROSKA",
 271                 ".h264"    , ".H264"    ,
 272                 ".dv"      , ".DV"      ,
 273                 ".dirac"   , ".DIRAC"   ,
 274                 ".webm"    , ".WEBM"    ,
 275         };
 276
 277         for (size_t n = 0; n < sizeof(suffixes)/sizeof(suffixes[0]); ++n) {
 278                 if (file.rfind (suffixes[n]) == file.length() - strlen (suffixes[n])) {
 279                         return true;
 280                 }
 281         }
 282
 283         return false;
 284 }
 285
 286 bool
 287 AddVideoDialog::on_video_filter (const FileFilter::Info& filter_info)
 288 {
 289         return check_video_file_extension(filter_info.filename);
 290 }
 291
 292 std::string
 293 AddVideoDialog::file_name (bool &local_file)
 294 {
 295         int n = notebook.get_current_page ();
 296         if (n == 1 || ! Config->get_video_advanced_setup()) {
 297                 local_file = true;
 298                 return chooser.get_filename();
 299         } else {
 300                 local_file = false;
 301                 Gtk::TreeModel::iterator iter = harvid_list_view.get_selection()->get_selected();
 302                 if(!iter) return "";
 303
 304                 std::string uri = (*iter)[harvid_list_columns.uri];
 305                 std::string video_server_url = video_get_server_url(Config);
 306
 307                 /* check if video server is running locally */
 308                 if (video_get_docroot(Config).size() > 0
 309                                 && !video_server_url.compare(0, 16, "http://localhost"))
 310                 {
 311                         /* check if the file can be accessed */
 312                         int plen;
 313                         CURL *curl;
 314                         curl = curl_easy_init();
 315                         char *ue = curl_easy_unescape(curl, uri.c_str(), uri.length(), &plen);
 316 #ifdef PLATFORM_WINDOWS
 317                         char *tmp;
 318                         while (tmp = strchr(ue, '/')) *tmp = '\\';
 319 #endif
 320                         std::string path = video_get_docroot(Config) + ue;
 321                         if (!::access(path.c_str(), R_OK)) {
 322                                 uri = path;
 323                                 local_file = true;
 324                         }
 325                         curl_easy_cleanup(curl);
 326                         curl_free(ue);
 327                 }
 328                 return uri;
 329         }
 330 }
 331
 332 enum VtlImportOption
 333 AddVideoDialog::import_option ()
 334 {
 335         int n = notebook.get_current_page ();
 336         if (n == 0 && Config->get_video_advanced_setup()) { return VTL_IMPORT_NONE; }
 337         return VTL_IMPORT_TRANSCODE;
 338 }
 339
 340 bool
 341 AddVideoDialog::launch_xjadeo ()
 342 {
 343         return xjadeo_checkbox.get_active();
 344 }
 345
 346 bool
 347 AddVideoDialog::auto_set_session_fps ()
 348 {
 349         return set_session_fps_checkbox.get_active();
 350 }
 351
 352 void
 353 AddVideoDialog::clear_preview_image ()
 354 {
 355         imgbuf->fill(RGBA_TO_UINT(0,0,0,255));
 356         video_draw_cross(imgbuf);
 357         preview_image->set(imgbuf);
 358         preview_image->show();
 359 }
 360
 361 void
 362 AddVideoDialog::set_action_ok (bool yn)
 363 {
 364         if (yn) {
 365                 ok_button->set_sensitive(true);
 366         } else {
 367                 preview_path = "";
 368                 pi_tcin.set_text("-");
 369                 pi_tcout.set_text("-");
 370                 pi_aspect.set_text("-");
 371                 pi_fps.set_text("-");
 372                 ok_button->set_sensitive(false);
 373                 clear_preview_image();
 374         }
 375 }
 376
 377 void
 378 AddVideoDialog::file_selection_changed ()
 379 {
 380         if (chooser.get_filename().size() > 0) {
 381                 std::string path = chooser.get_filename();
 382                 bool ok =
 383                                 check_video_file_extension(path)
 384                                 &&  Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_REGULAR | Glib::FILE_TEST_IS_SYMLINK)
 385                                 && !Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_DIR);
 386                 set_action_ok(ok);
 387                 if (ok) {
 388                         seek_slider.set_value(0);
 389                         request_preview(video_map_path(video_get_docroot(Config), path));
 390                 }
 391         } else {
 392                 set_action_ok(false);
 393         }
 394 }
 395
 396 void
 397 AddVideoDialog::file_activated ()
 398 {
 399         if (chooser.get_filename().size() > 0) {
 400                 std::string path = chooser.get_filename();
 401                 // TODO check docroot -> set import options
 402                 bool ok =
 403                                 check_video_file_extension(path)
 404                                 &&  Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_REGULAR | Glib::FILE_TEST_IS_SYMLINK)
 405                                 && !Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_DIR);
 406                 if (ok) {
 407                         Gtk::Dialog::response(RESPONSE_ACCEPT);
 408                 }
 409         }
 410 }
 411
 412 /**** Tree List Interaction ***/
 413
 414 void
 415 AddVideoDialog::harvid_list_view_selected () {
 416         Gtk::TreeModel::iterator iter = harvid_list_view.get_selection()->get_selected();
 417         // TODO check docroot -> set import options, xjadeo
 418         if(!iter) {
 419                 set_action_ok(false);
 420                 return;
 421         }
 422         if ((std::string)((*iter)[harvid_list_columns.id]) == Stock::DIRECTORY.id) {
 423                 set_action_ok(false);
 424         } else {
 425                 set_action_ok(true);
 426                 seek_slider.set_value(0);
 427                 request_preview((*iter)[harvid_list_columns.uri]);
 428         }
 429 }
 430
 431 void
 432 AddVideoDialog::harvid_list_view_activated (const Gtk::TreeModel::Path& path, Gtk::TreeViewColumn*) {
 433         Gtk::TreeModel::iterator iter = harvid_list->get_iter(path);
 434         if (!iter) return;
 435         std::string type = (*iter)[harvid_list_columns.id];
 436         std::string url = (*iter)[harvid_list_columns.uri];
 437
 438 #if 0
 439         printf ("A: %s %s %s\n",
 440                         ((std::string)((*iter)[harvid_list_columns.id])).c_str(),
 441                         ((std::string)((*iter)[harvid_list_columns.uri])).c_str(),
 442                         ((std::string)((*iter)[harvid_list_columns.filename])).c_str());
 443 #endif
 444
 445         if (type == Gtk::Stock::DIRECTORY.id) {
 446                 harvid_request(url.c_str());
 447         } else {
 448                 Gtk::Dialog::response(RESPONSE_ACCEPT);
 449         }
 450 }
 451
 452 void
 453 AddVideoDialog::harvid_load_docroot() {
 454         set_action_ok(false);
 455
 456         std::string video_server_url = video_get_server_url(Config);
 457         char url[2048];
 458         snprintf(url, sizeof(url), "%s%sindex/"
 459                 , video_server_url.c_str()
 460                 , (video_server_url.length()>0 && video_server_url.at(video_server_url.length()-1) == '/')?"":"/");
 461         harvid_request(url);
 462         harvid_initialized = true;
 463 }
 464
 465 bool
 466 AddVideoDialog::page_switch() {
 467         if (notebook.get_current_page () == 1 || Config->get_video_advanced_setup()) {
 468                 file_selection_changed();
 469                 return true;
 470         }
 471
 472         if (harvid_initialized) {
 473                 harvid_list_view_selected();
 474         } else {
 475                 harvid_load_docroot();
 476         }
 477         return true;
 478 }
 479
 480 /**** Harvid HTTP interface ***/
 481 void
 482 AddVideoDialog::harvid_request(std::string u)
 483 {
 484         char url[2048];
 485         int status;
 486         snprintf(url, sizeof(url), "%s?format=csv", u.c_str());
 487
 488         harvid_list->clear();
 489
 490         char *res = a3_curl_http_get(url, &status);
 491         if (status != 200) {
 492                 printf("request failed\n"); // XXX
 493                 harvid_path.set_text(" - request failed -");
 494                 free(res);
 495                 return;
 496         }
 497
 498         /* add up-to-parent */
 499         size_t se = u.find_last_of("/", u.size()-2);
 500         size_t ss = u.find("/index/");
 501         if (se != string::npos && ss != string::npos && se > ss) {
 502                 TreeModel::iterator new_row = harvid_list->append();
 503                 TreeModel::Row row = *new_row;
 504                 row[harvid_list_columns.id      ] = Gtk::Stock::DIRECTORY.id;
 505                 row[harvid_list_columns.uri     ] = u.substr(0, se + 1);
 506                 row[harvid_list_columns.filename] = X_("..");
 507         }
 508         if (se != string::npos) {
 509                 int plen;
 510                 std::string path = u.substr(ss + 6);
 511                 CURL *curl;
 512                 curl = curl_easy_init();
 513                 char *ue = curl_easy_unescape(curl, path.c_str(), path.length(), &plen);
 514                 harvid_path.set_text(std::string(ue));
 515                 curl_easy_cleanup(curl);
 516                 curl_free(ue);
 517         } else {
 518                 harvid_path.set_text(" ??? ");
 519         }
 520
 521         if (!res) return;
 522
 523         std::vector<std::vector<std::string> > lines;
 524         ParseCSV(std::string(res), lines);
 525         for (std::vector<std::vector<std::string> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 526                 TreeModel::iterator new_row = harvid_list->append();
 527                 TreeModel::Row row = *new_row;
 528
 529                 if (i->at(0) == X_("D")) {
 530                         row[harvid_list_columns.id      ] = Gtk::Stock::DIRECTORY.id;
 531                         row[harvid_list_columns.uri     ] = i->at(1).c_str();
 532                         row[harvid_list_columns.filename] = i->at(2).c_str();
 533                 } else {
 534                         row[harvid_list_columns.id      ] = Gtk::Stock::MEDIA_PLAY.id;
 535                         row[harvid_list_columns.uri     ] = i->at(2).c_str();
 536                         row[harvid_list_columns.filename] = i->at(3).c_str();
 537                 }
 538         }
 539
 540         free(res);
 541 }
 542
 543 void
 544 AddVideoDialog::seek_preview()
 545 {
 546         if (preview_path.size() > 0)
 547                 request_preview(preview_path);
 548 }
 549
 550 void
 551 AddVideoDialog::request_preview(std::string u)
 552 {
 553         std::string video_server_url = video_get_server_url(Config);
 554
 555         double video_file_fps;
 556         long long int video_duration;
 557         double video_start_offset;
 558         double video_aspect_ratio;
 559
 560         int clip_width = PREVIEW_WIDTH;
 561         int clip_height = PREVIEW_HEIGHT;
 562         int clip_xoff, clip_yoff;
 563
 564         if (!video_query_info(video_server_url, u,
 565                         video_file_fps, video_duration, video_start_offset, video_aspect_ratio))
 566         {
 567                 printf("image preview info request failed\n");
 568                 // set_action_ok(false); // XXX only if docroot mismatch
 569                 preview_path = "";
 570                 pi_tcin.set_text("-");
 571                 pi_tcout.set_text("-");
 572                 pi_aspect.set_text("-");
 573                 pi_fps.set_text("-");
 574
 575                 clear_preview_image();
 576                 return;
 577         }
 578
 579         if ((PREVIEW_WIDTH / (double)PREVIEW_HEIGHT) > video_aspect_ratio ) {
 580                 clip_width = MIN(PREVIEW_WIDTH, rint(clip_height * video_aspect_ratio));
 581         } else {
 582                 clip_height = MIN(PREVIEW_HEIGHT, rint(clip_width / video_aspect_ratio));
 583         }
 584
 585         pi_tcin.set_text(Timecode::timecode_format_sampletime(
 586                                 video_start_offset, video_file_fps, video_file_fps, rint(video_file_fps*100.0)==2997));
 587         pi_tcout.set_text(Timecode::timecode_format_sampletime(
 588                                 video_start_offset + video_duration, video_file_fps, video_file_fps, rint(video_file_fps*100.0)==2997));
 589
 590         /* todo break out this code -> re-usability */
 591         const int arc = rint(video_aspect_ratio*100);
 592
 593         switch (arc) {
 594                 case 100:
 595                         pi_aspect.set_text(X_(" 1:1"));  // square (large format stills)
 596                         break;
 597                 case 125:
 598                         pi_aspect.set_text(X_(" 5:4"));
 599                         break;
 600                 case 133:
 601                         pi_aspect.set_text(X_(" 4:3"));
 602                         break;
 603                 case 134:
 604                         pi_aspect.set_text(X_(" 47:35")); // 752x560, Super8-scans
 605                         break;
 606                 case 137:
 607                 case 138:
 608                         pi_aspect.set_text(X_(" 1.37:1")); // 'Academy ratio' <= 1953
 609                         break;
 610                 case 141:
 611                         pi_aspect.set_text(X_(" 1.41:1")); //  Lichtenberg ratio
 612                         break;
 613                 case 150:
 614                         pi_aspect.set_text(X_(" 3:2"));  // classic 35mm
 615                         break;
 616                 case 160:
 617                         pi_aspect.set_text(X_(" 8:5"));  // credit-card size
 618                         break;
 619                 case 162:
 620                         pi_aspect.set_text(X_(" 16:10")); // golden ratio 1.61803..
 621                         break;
 622                 case 166:
 623                 case 167:
 624                         pi_aspect.set_text(X_(" 5:3")); // Super16, EU-widescreen
 625                         break;
 626                 case 177:
 627                 case 178:
 628                         pi_aspect.set_text(X_(" 16:9")); // HD video
 629                         break;
 630                 case 180:
 631                         pi_aspect.set_text(X_(" 9:5"));
 632                         break;
 633                 case 185:
 634                         pi_aspect.set_text(X_(" 1.85:1")); // US widescreen cinema
 635                         break;
 636                 case 200:
 637                         pi_aspect.set_text(X_(" 2:1"));
 638                         break;
 639                 case 239:
 640                 case 240:
 641                         pi_aspect.set_text(X_(" 2.40:1")); // Anamorphic
 642                         break;
 643                 case 266:
 644                 case 267:
 645                         pi_aspect.set_text(X_(" 2.66:1")); // CinemaScope
 646                         break;
 647                 case 275:
 648                         pi_aspect.set_text(X_(" 2.75:1")); // Ultra Panavision
 649                         break;
 650                 case 400:
 651                         pi_aspect.set_text(X_(" 4.00:1")); // three 35mm 1.33:1 polyvision
 652                         break;
 653                 default:
 654                         pi_aspect.set_text(string_compose(X_(" %1:1"), video_aspect_ratio));
 655                 break;
 656         }
 657
 658         pi_fps.set_text(string_compose(_(" %1 fps"), video_file_fps));
 659
 660         clip_xoff = (PREVIEW_WIDTH - clip_width)/2;
 661         clip_yoff = (PREVIEW_HEIGHT - clip_height)/2;
 662
 663         char url[2048];
 664         snprintf(url, sizeof(url), "%s%s?frame=%lli&w=%d&h=%di&file=%s&format=rgb"
 665                 , video_server_url.c_str()
 666                 , (video_server_url.length()>0 && video_server_url.at(video_server_url.length()-1) == '/')?"":"/"
 667                 , (long long) (video_duration * seek_slider.get_value() / 1000.0)
 668                 , clip_width, clip_height, u.c_str());
 669
 670         char *data = a3_curl_http_get(url, NULL);
 671         if (!data) {
 672                 printf("image preview request failed %s\n", url);
 673                 imgbuf->fill(RGBA_TO_UINT(0,0,0,255));
 674                 video_draw_cross(imgbuf);
 675                 preview_path = "";
 676         } else {
 677                 Glib::RefPtr<Gdk::Pixbuf> tmp;
 678                 tmp = Gdk::Pixbuf::create_from_data ((guint8*) data, Gdk::COLORSPACE_RGB, false, 8, clip_width, clip_height, clip_width*3);
 679                 if (clip_width != PREVIEW_WIDTH || clip_height != PREVIEW_HEIGHT) {
 680                         imgbuf->fill(RGBA_TO_UINT(0,0,0,255));
 681                 }
 682                 tmp->copy_area (0, 0, clip_width, clip_height, imgbuf, clip_xoff, clip_yoff);
 683                 preview_path = u;
 684                 free(data);
 685         }
 686         preview_image->set(imgbuf);
 687         preview_image->show();
 688 }