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 "add_video_dialog.h"
  37 #include "utils_videotl.h"
  38 #include "i18n.h"
  39
  40 using namespace Gtk;
  41 using namespace std;
  42 using namespace PBD;
  43 using namespace ARDOUR;
  44 using namespace VideoUtils;
  45
  46 #define PREVIEW_WIDTH (240)
  47 #define PREVIEW_HEIGHT (180)
  48
  49 #ifndef MIN
  50 #define MIN(a,b) ( (a) < (b) ? (a) : (b) )
  51 #endif
  52
  53 AddVideoDialog::AddVideoDialog (Session* s)
  54         : ArdourDialog (_("Set Video Track"))
  55         , seek_slider (0,1000,1)
  56         , preview_path ("")
  57         , pi_tcin ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  58         , pi_tcout ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  59         , pi_aspect ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  60         , pi_fps ("-", Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false)
  61         , chooser (FILE_CHOOSER_ACTION_OPEN)
  62         , xjadeo_checkbox (_("Launch External Video Monitor"))
  63         , set_session_fps_checkbox (_("Adjust Session Framerate to Match Video Framerate"))
  64         , harvid_path ("")
  65         , harvid_reset (_("Reload docroot"))
  66         , harvid_list (ListStore::create(harvid_list_columns))
  67         , harvid_list_view (harvid_list)
  68         , show_advanced(false)
  69         , loaded_docroot(false)
  70 {
  71         set_session (s);
  72         set_name ("AddVideoDialog");
  73         set_modal (true);
  74         set_skip_taskbar_hint (true);
  75         set_resizable (true);
  76         set_size_request (800, -1);
  77
  78         harvid_initialized = false;
  79         std::string dstdir = video_dest_dir(_session->session_directory().video_path(), video_get_docroot(Config));
  80
  81         /* Harvid Browser */
  82         harvid_list_view.append_column("", pixBufRenderer);
  83         harvid_list_view.append_column(_("Filename"), harvid_list_columns.filename);
  84
  85         harvid_list_view.get_column(0)->set_alignment(0.5);
  86         harvid_list_view.get_column(0)->add_attribute(pixBufRenderer, "stock-id", harvid_list_columns.id);
  87         harvid_list_view.get_column(1)->set_expand(true);
  88         harvid_list_view.get_column(1)->set_sort_column(harvid_list_columns.filename);
  89         harvid_list_view.set_enable_search(true);
  90         harvid_list_view.set_search_column(1);
  91
  92         harvid_list_view.get_selection()->set_mode (SELECTION_SINGLE);
  93
  94         harvid_list_view.get_selection()->signal_changed().connect(sigc::mem_fun(*this, &AddVideoDialog::harvid_list_view_selected));
  95         harvid_list_view.signal_row_activated().connect (sigc::mem_fun (*this, &AddVideoDialog::harvid_list_view_activated));
  96
  97         Gtk::ScrolledWindow *scroll = manage(new ScrolledWindow);
  98         scroll->add(harvid_list_view);
  99         scroll->set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC);
 100
 101         HBox* hbox = manage (new HBox);
 102         harvid_path.set_alignment (0, 0.5);
 103         hbox->pack_start (harvid_path, true, true);
 104         hbox->pack_start (harvid_reset, false, false);
 105
 106         server_index_box.pack_start (*hbox, false, false);
 107         server_index_box.pack_start (*scroll, true, true);
 108
 109         /* file chooser */
 110         chooser.set_border_width (4);
 111 #ifdef GTKOSX
 112         /* some broken redraw behaviour - this is a bandaid */
 113         chooser.signal_selection_changed().connect (mem_fun (chooser, &Widget::queue_draw));
 114 #endif
 115         chooser.set_current_folder (dstdir);
 116
 117         Gtk::FileFilter video_filter;
 118         Gtk::FileFilter matchall_filter;
 119         video_filter.add_custom (FILE_FILTER_FILENAME, mem_fun(*this, &AddVideoDialog::on_video_filter));
 120         video_filter.set_name (_("Video files"));
 121
 122         matchall_filter.add_pattern ("*.*");
 123         matchall_filter.set_name (_("All files"));
 124
 125         chooser.add_filter (video_filter);
 126         chooser.add_filter (matchall_filter);
 127         chooser.set_select_multiple (false);
 128
 129         file_chooser_box.pack_start (chooser, true, true, 0);
 130
 131         /* Global Options*/
 132         Gtk::Label* l;
 133         VBox* options_box = manage (new VBox);
 134
 135         l = manage (new Label (_("<b>Options</b>"), Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER, false));
 136         l->set_use_markup ();
 137
 138         options_box->pack_start (*l, false, true, 4);
 139         options_box->pack_start (xjadeo_checkbox, false, true, 2);
 140         options_box->pack_start (set_session_fps_checkbox, false, true, 2);
 141
 142         /* preview pane */
 143         VBox* previewpane = manage (new VBox);
 144         Gtk::Table *table = manage(new Table(5,2));
 145
 146         table->set_row_spacings(2);
 147         table->set_col_spacings(4);
 148
 149         l = manage (new Label (_("<b>Video Information</b>"), Gtk::ALIGN_CENTER, Gtk::ALIGN_CENTER, false));
 150         l->set_use_markup ();
 151         table->attach (*l, 0, 2, 0, 1, FILL, FILL);
 152         l = manage (new Label (_("Start:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 153         table->attach (*l, 0, 1, 1, 2, FILL, FILL);
 154         table->attach (pi_tcin, 1, 2, 1, 2, FILL, FILL);
 155         l = manage (new Label (_("End:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 156         table->attach (*l, 0, 1, 2, 3, FILL, FILL);
 157         table->attach (pi_tcout, 1, 2, 2, 3, FILL, FILL);
 158         l = manage (new Label (_("Frame rate:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 159         table->attach (*l, 0, 1, 3, 4, FILL, FILL);
 160         table->attach (pi_fps, 1, 2, 3, 4, FILL, FILL);
 161         l = manage (new Label (_("Aspect Ratio:"), Gtk::ALIGN_RIGHT, Gtk::ALIGN_CENTER, false));
 162         table->attach (*l, 0, 1, 4, 5, FILL, FILL);
 163         table->attach (pi_aspect, 1, 2, 4, 5, FILL, FILL);
 164
 165         preview_image = manage(new Gtk::Image);
 166
 167         imgbuf = Gdk::Pixbuf::create(Gdk::COLORSPACE_RGB, true, 8, PREVIEW_WIDTH, PREVIEW_HEIGHT);
 168         imgbuf->fill(RGBA_TO_UINT(127,0,0,255));
 169         preview_image->set(imgbuf);
 170         seek_slider.set_draw_value(false);
 171
 172         hbox = manage (new HBox);
 173         hbox->pack_start (*table, true, false);
 174
 175         Gtk::Alignment *al = manage(new Gtk::Alignment());
 176         al->set_size_request(-1, 20);
 177
 178         previewpane->pack_start (*preview_image, false, false);
 179         previewpane->pack_start (seek_slider, false, false);
 180         previewpane->pack_start (*al, false, false);
 181         previewpane->pack_start (*hbox, true, true, 6);
 182
 183         /* Prepare Overall layout */
 184
 185         hbox = manage (new HBox);
 186         hbox->pack_start (browser_container, true, true);
 187         hbox->pack_start (*previewpane, false, false);
 188
 189         get_vbox()->set_spacing (4);
 190         get_vbox()->pack_start (*hbox, true, true);
 191         get_vbox()->pack_start (*options_box, false, false);
 192
 193         /* xjadeo checkbox */
 194         if (ARDOUR_UI::instance()->video_timeline->found_xjadeo()
 195                         /* TODO xjadeo setup w/ xjremote */
 196                         && video_get_docroot(Config).size() > 0) {
 197                 xjadeo_checkbox.set_active(true);  /* set in ardour_ui.cpp ?! */
 198         } else {
 199                 printf("xjadeo was not found or video-server docroot is unset (remote video-server)\n");
 200                 xjadeo_checkbox.set_active(false);
 201                 xjadeo_checkbox.set_sensitive(false);
 202         }
 203
 204         /* FPS checkbox */
 205         set_session_fps_checkbox.set_active(true);
 206
 207         /* Buttons */
 208         add_button (Stock::CANCEL, RESPONSE_CANCEL);
 209         ok_button = add_button (Stock::OK, RESPONSE_ACCEPT);
 210         //ok_button->set_sensitive(false);
 211         set_action_ok(false);
 212
 213         /* connect signals after eveything has been initialized */
 214         chooser.signal_selection_changed().connect (mem_fun (*this, &AddVideoDialog::file_selection_changed));
 215         chooser.signal_file_activated().connect (mem_fun (*this, &AddVideoDialog::file_activated));
 216         //chooser.signal_update_preview().connect(sigc::mem_fun(*this, &AddVideoDialog::update_preview));
 217         notebook.signal_switch_page().connect (sigc::hide_return (sigc::hide (sigc::hide (sigc::mem_fun (*this, &AddVideoDialog::page_switch)))));
 218         seek_slider.signal_value_changed().connect(sigc::mem_fun(*this, &AddVideoDialog::seek_preview));
 219         harvid_reset.signal_clicked().connect (sigc::mem_fun (*this, &AddVideoDialog::harvid_load_docroot));
 220 }
 221
 222 AddVideoDialog::~AddVideoDialog ()
 223 {
 224 }
 225
 226 void
 227 AddVideoDialog::on_show ()
 228 {
 229         /* overall layout depending on get_video_advanced_setup() and docroot */
 230         for (int i = notebook.get_n_pages(); i > 0 ; --i) {
 231                 notebook.remove_page(i);
 232         }
 233         if (server_index_box.get_parent()) {
 234                 server_index_box.get_parent()->remove(server_index_box);
 235         }
 236         if (file_chooser_box.get_parent()) {
 237                 file_chooser_box.get_parent()->remove(file_chooser_box);
 238         }
 239         if (notebook.get_parent()) {
 240                 notebook.get_parent()->remove(notebook);
 241         }
 242
 243         if (Config->get_video_advanced_setup()) {
 244                 notebook.append_page (server_index_box, _("VideoServerIndex"));
 245                 if (video_get_docroot(Config).size() > 0) {
 246                         notebook.append_page (file_chooser_box, _("Browse Files"));
 247                 }
 248                 browser_container.pack_start (notebook, true, true);
 249                 show_advanced = true;
 250                 if (!loaded_docroot) {
 251                         harvid_load_docroot();
 252                 }
 253         } else {
 254                 browser_container.pack_start (file_chooser_box, true, true);
 255                 show_advanced = false;
 256                 loaded_docroot = false;
 257         }
 258
 259         show_all_children ();
 260
 261         Dialog::on_show ();
 262 }
 263
 264 static bool check_video_file_extension(std::string file)
 265 {
 266         const char* suffixes[] = {
 267                 ".avi"     , ".AVI"     ,
 268                 ".mov"     , ".MOV"     ,
 269                 ".ogg"     , ".OGG"     ,
 270                 ".ogv"     , ".OGV"     ,
 271                 ".mpg"     , ".MPG"     ,
 272                 ".mov"     , ".MOV"     ,
 273                 ".mp4"     , ".MP4"     ,
 274                 ".mkv"     , ".MKV"     ,
 275                 ".vob"     , ".VOB"     ,
 276                 ".asf"     , ".ASF"     ,
 277                 ".avs"     , ".AVS"     ,
 278                 ".dts"     , ".DTS"     ,
 279                 ".flv"     , ".FLV"     ,
 280                 ".m4v"     , ".M4V"     ,
 281                 ".matroska", ".MATROSKA",
 282                 ".h264"    , ".H264"    ,
 283                 ".dv"      , ".DV"      ,
 284                 ".dirac"   , ".DIRAC"   ,
 285                 ".webm"    , ".WEBM"    ,
 286         };
 287
 288         for (size_t n = 0; n < sizeof(suffixes)/sizeof(suffixes[0]); ++n) {
 289                 if (file.rfind (suffixes[n]) == file.length() - strlen (suffixes[n])) {
 290                         return true;
 291                 }
 292         }
 293
 294         return false;
 295 }
 296
 297 bool
 298 AddVideoDialog::on_video_filter (const FileFilter::Info& filter_info)
 299 {
 300         return check_video_file_extension(filter_info.filename);
 301 }
 302
 303 std::string
 304 AddVideoDialog::file_name (bool &local_file)
 305 {
 306         int n = notebook.get_current_page ();
 307         if (n == 1 || !show_advanced) {
 308                 local_file = true;
 309                 return chooser.get_filename();
 310         } else {
 311                 local_file = false;
 312                 Gtk::TreeModel::iterator iter = harvid_list_view.get_selection()->get_selected();
 313                 if(!iter) return "";
 314
 315                 std::string uri = (*iter)[harvid_list_columns.uri];
 316                 std::string video_server_url = video_get_server_url(Config);
 317
 318                 /* check if video server is running locally */
 319                 if (video_get_docroot(Config).size() > 0
 320                                 && !video_server_url.compare(0, 16, "http://localhost"))
 321                 {
 322                         /* check if the file can be accessed */
 323                         int plen;
 324                         CURL *curl;
 325                         curl = curl_easy_init();
 326                         char *ue = curl_easy_unescape(curl, uri.c_str(), uri.length(), &plen);
 327 #ifdef PLATFORM_WINDOWS
 328                         char *tmp;
 329                         while (tmp = strchr(ue, '/')) *tmp = '\\';
 330 #endif
 331                         std::string path = video_get_docroot(Config) + ue;
 332                         if (!::access(path.c_str(), R_OK)) {
 333                                 uri = path;
 334                                 local_file = true;
 335                         }
 336                         curl_easy_cleanup(curl);
 337                         curl_free(ue);
 338                 }
 339                 return uri;
 340         }
 341 }
 342
 343 enum VtlImportOption
 344 AddVideoDialog::import_option ()
 345 {
 346         int n = notebook.get_current_page ();
 347         if (n == 0 && show_advanced) { return VTL_IMPORT_NONE; }
 348         return VTL_IMPORT_TRANSCODE;
 349 }
 350
 351 bool
 352 AddVideoDialog::launch_xjadeo ()
 353 {
 354         return xjadeo_checkbox.get_active();
 355 }
 356
 357 bool
 358 AddVideoDialog::auto_set_session_fps ()
 359 {
 360         return set_session_fps_checkbox.get_active();
 361 }
 362
 363 void
 364 AddVideoDialog::clear_preview_image ()
 365 {
 366         imgbuf->fill(RGBA_TO_UINT(0,0,0,255));
 367         video_draw_cross(imgbuf);
 368         preview_image->set(imgbuf);
 369         preview_image->show();
 370 }
 371
 372 void
 373 AddVideoDialog::set_action_ok (bool yn)
 374 {
 375         if (yn) {
 376                 ok_button->set_sensitive(true);
 377         } else {
 378                 preview_path = "";
 379                 pi_tcin.set_text("-");
 380                 pi_tcout.set_text("-");
 381                 pi_aspect.set_text("-");
 382                 pi_fps.set_text("-");
 383                 ok_button->set_sensitive(false);
 384                 clear_preview_image();
 385         }
 386 }
 387
 388 void
 389 AddVideoDialog::file_selection_changed ()
 390 {
 391         if (chooser.get_filename().size() > 0) {
 392                 std::string path = chooser.get_filename();
 393                 bool ok =
 394                                 check_video_file_extension(path)
 395                                 &&  Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_REGULAR | Glib::FILE_TEST_IS_SYMLINK)
 396                                 && !Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_DIR);
 397                 set_action_ok(ok);
 398                 if (ok) {
 399                         seek_slider.set_value(0);
 400                         request_preview(video_map_path(video_get_docroot(Config), path));
 401                 }
 402         } else {
 403                 set_action_ok(false);
 404         }
 405 }
 406
 407 void
 408 AddVideoDialog::file_activated ()
 409 {
 410         if (chooser.get_filename().size() > 0) {
 411                 std::string path = chooser.get_filename();
 412                 // TODO check docroot -> set import options
 413                 bool ok =
 414                                 check_video_file_extension(path)
 415                                 &&  Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_REGULAR | Glib::FILE_TEST_IS_SYMLINK)
 416                                 && !Glib::file_test(path.c_str(), Glib::FILE_TEST_IS_DIR);
 417                 if (ok) {
 418                         Gtk::Dialog::response(RESPONSE_ACCEPT);
 419                 }
 420         }
 421 }
 422
 423 /**** Tree List Interaction ***/
 424
 425 void
 426 AddVideoDialog::harvid_list_view_selected () {
 427         Gtk::TreeModel::iterator iter = harvid_list_view.get_selection()->get_selected();
 428         // TODO check docroot -> set import options, xjadeo
 429         if(!iter) {
 430                 set_action_ok(false);
 431                 return;
 432         }
 433         if ((std::string)((*iter)[harvid_list_columns.id]) == Stock::DIRECTORY.id) {
 434                 set_action_ok(false);
 435         } else {
 436                 set_action_ok(true);
 437                 seek_slider.set_value(0);
 438                 request_preview((*iter)[harvid_list_columns.uri]);
 439         }
 440 }
 441
 442 void
 443 AddVideoDialog::harvid_list_view_activated (const Gtk::TreeModel::Path& path, Gtk::TreeViewColumn*) {
 444         Gtk::TreeModel::iterator iter = harvid_list->get_iter(path);
 445         if (!iter) return;
 446         std::string type = (*iter)[harvid_list_columns.id];
 447         std::string url = (*iter)[harvid_list_columns.uri];
 448
 449 #if 0
 450         printf ("A: %s %s %s\n",
 451                         ((std::string)((*iter)[harvid_list_columns.id])).c_str(),
 452                         ((std::string)((*iter)[harvid_list_columns.uri])).c_str(),
 453                         ((std::string)((*iter)[harvid_list_columns.filename])).c_str());
 454 #endif
 455
 456         if (type == Gtk::Stock::DIRECTORY.id) {
 457                 harvid_request(url.c_str());
 458         } else {
 459                 Gtk::Dialog::response(RESPONSE_ACCEPT);
 460         }
 461 }
 462
 463 void
 464 AddVideoDialog::harvid_load_docroot() {
 465         set_action_ok(false);
 466         loaded_docroot = true;
 467
 468         std::string video_server_url = video_get_server_url(Config);
 469         char url[2048];
 470         snprintf(url, sizeof(url), "%s%sindex/"
 471                 , video_server_url.c_str()
 472                 , (video_server_url.length()>0 && video_server_url.at(video_server_url.length()-1) == '/')?"":"/");
 473         harvid_request(url);
 474         harvid_initialized = true;
 475 }
 476
 477 bool
 478 AddVideoDialog::page_switch() {
 479         if (notebook.get_current_page () == 1 || show_advanced) {
 480                 file_selection_changed();
 481                 return true;
 482         }
 483
 484         if (harvid_initialized) {
 485                 harvid_list_view_selected();
 486         } else {
 487                 harvid_load_docroot();
 488         }
 489         return true;
 490 }
 491
 492 /**** Harvid HTTP interface ***/
 493 void
 494 AddVideoDialog::harvid_request(std::string u)
 495 {
 496         char url[2048];
 497         int status;
 498         snprintf(url, sizeof(url), "%s?format=csv", u.c_str());
 499
 500         harvid_list->clear();
 501
 502         char *res = a3_curl_http_get(url, &status);
 503         if (status != 200) {
 504                 printf("request failed\n"); // XXX
 505                 harvid_path.set_text(" - request failed -");
 506                 free(res);
 507                 return;
 508         }
 509
 510         /* add up-to-parent */
 511         size_t se = u.find_last_of("/", u.size()-2);
 512         size_t ss = u.find("/index/");
 513         if (se != string::npos && ss != string::npos && se > ss) {
 514                 TreeModel::iterator new_row = harvid_list->append();
 515                 TreeModel::Row row = *new_row;
 516                 row[harvid_list_columns.id      ] = Gtk::Stock::DIRECTORY.id;
 517                 row[harvid_list_columns.uri     ] = u.substr(0, se + 1);
 518                 row[harvid_list_columns.filename] = X_("..");
 519         }
 520         if (se != string::npos) {
 521                 int plen;
 522                 std::string path = u.substr(ss + 6);
 523                 CURL *curl;
 524                 curl = curl_easy_init();
 525                 char *ue = curl_easy_unescape(curl, path.c_str(), path.length(), &plen);
 526                 harvid_path.set_text(std::string(ue));
 527                 curl_easy_cleanup(curl);
 528                 curl_free(ue);
 529         } else {
 530                 harvid_path.set_text(" ??? ");
 531         }
 532
 533         if (!res) return;
 534
 535         std::vector<std::vector<std::string> > lines;
 536         ParseCSV(std::string(res), lines);
 537         for (std::vector<std::vector<std::string> >::iterator i = lines.begin(); i != lines.end(); ++i) {
 538                 TreeModel::iterator new_row = harvid_list->append();
 539                 TreeModel::Row row = *new_row;
 540
 541                 if (i->at(0) == X_("D")) {
 542                         row[harvid_list_columns.id      ] = Gtk::Stock::DIRECTORY.id;
 543                         row[harvid_list_columns.uri     ] = i->at(1).c_str();
 544                         row[harvid_list_columns.filename] = i->at(2).c_str();
 545                 } else {
 546                         row[harvid_list_columns.id      ] = Gtk::Stock::MEDIA_PLAY.id;
 547                         row[harvid_list_columns.uri     ] = i->at(2).c_str();
 548                         row[harvid_list_columns.filename] = i->at(3).c_str();
 549                 }
 550         }
 551
 552         free(res);
 553 }
 554
 555 void
 556 AddVideoDialog::seek_preview()
 557 {
 558         if (preview_path.size() > 0)
 559                 request_preview(preview_path);
 560 }
 561
 562 void
 563 AddVideoDialog::request_preview(std::string u)
 564 {
 565         std::string video_server_url = video_get_server_url(Config);
 566
 567         double video_file_fps;
 568         long long int video_duration;
 569         double video_start_offset;
 570         double video_aspect_ratio;
 571
 572         int clip_width = PREVIEW_WIDTH;
 573         int clip_height = PREVIEW_HEIGHT;
 574         int clip_xoff, clip_yoff;
 575
 576         if (!video_query_info(video_server_url, u,
 577                         video_file_fps, video_duration, video_start_offset, video_aspect_ratio))
 578         {
 579                 printf("image preview info request failed\n");
 580                 // set_action_ok(false); // XXX only if docroot mismatch
 581                 preview_path = "";
 582                 pi_tcin.set_text("-");
 583                 pi_tcout.set_text("-");
 584                 pi_aspect.set_text("-");
 585                 pi_fps.set_text("-");
 586
 587                 clear_preview_image();
 588                 return;
 589         }
 590
 591         if ((PREVIEW_WIDTH / (double)PREVIEW_HEIGHT) > video_aspect_ratio ) {
 592                 clip_width = MIN(PREVIEW_WIDTH, rint(clip_height * video_aspect_ratio));
 593         } else {
 594                 clip_height = MIN(PREVIEW_HEIGHT, rint(clip_width / video_aspect_ratio));
 595         }
 596
 597         pi_tcin.set_text(Timecode::timecode_format_sampletime(
 598                                 video_start_offset, video_file_fps, video_file_fps, rint(video_file_fps*100.0)==2997));
 599         pi_tcout.set_text(Timecode::timecode_format_sampletime(
 600                                 video_start_offset + video_duration, video_file_fps, video_file_fps, rint(video_file_fps*100.0)==2997));
 601
 602         /* todo break out this code -> re-usability */
 603         const int arc = rint(video_aspect_ratio*100);
 604
 605         switch (arc) {
 606                 case 100:
 607                         pi_aspect.set_text(X_(" 1:1"));  // square (large format stills)
 608                         break;
 609                 case 125:
 610                         pi_aspect.set_text(X_(" 5:4"));
 611                         break;
 612                 case 133:
 613                         pi_aspect.set_text(X_(" 4:3"));
 614                         break;
 615                 case 134:
 616                         pi_aspect.set_text(X_(" 47:35")); // 752x560, Super8-scans
 617                         break;
 618                 case 137:
 619                 case 138:
 620                         pi_aspect.set_text(X_(" 1.37:1")); // 'Academy ratio' <= 1953
 621                         break;
 622                 case 141:
 623                         pi_aspect.set_text(X_(" 1.41:1")); //  Lichtenberg ratio
 624                         break;
 625                 case 150:
 626                         pi_aspect.set_text(X_(" 3:2"));  // classic 35mm
 627                         break;
 628                 case 160:
 629                         pi_aspect.set_text(X_(" 8:5"));  // credit-card size
 630                         break;
 631                 case 162:
 632                         pi_aspect.set_text(X_(" 16:10")); // golden ratio 1.61803..
 633                         break;
 634                 case 166:
 635                 case 167:
 636                         pi_aspect.set_text(X_(" 5:3")); // Super16, EU-widescreen
 637                         break;
 638                 case 177:
 639                 case 178:
 640                         pi_aspect.set_text(X_(" 16:9")); // HD video
 641                         break;
 642                 case 180:
 643                         pi_aspect.set_text(X_(" 9:5"));
 644                         break;
 645                 case 185:
 646                         pi_aspect.set_text(X_(" 1.85:1")); // US widescreen cinema
 647                         break;
 648                 case 200:
 649                         pi_aspect.set_text(X_(" 2:1"));
 650                         break;
 651                 case 239:
 652                 case 240:
 653                         pi_aspect.set_text(X_(" 2.40:1")); // Anamorphic
 654                         break;
 655                 case 266:
 656                 case 267:
 657                         pi_aspect.set_text(X_(" 2.66:1")); // CinemaScope
 658                         break;
 659                 case 275:
 660                         pi_aspect.set_text(X_(" 2.75:1")); // Ultra Panavision
 661                         break;
 662                 case 400:
 663                         pi_aspect.set_text(X_(" 4.00:1")); // three 35mm 1.33:1 polyvision
 664                         break;
 665                 default:
 666                         pi_aspect.set_text(string_compose(X_(" %1:1"), video_aspect_ratio));
 667                 break;
 668         }
 669
 670         pi_fps.set_text(string_compose(_(" %1 fps"), video_file_fps));
 671
 672         clip_xoff = (PREVIEW_WIDTH - clip_width)/2;
 673         clip_yoff = (PREVIEW_HEIGHT - clip_height)/2;
 674
 675         char url[2048];
 676         snprintf(url, sizeof(url), "%s%s?frame=%lli&w=%d&h=%di&file=%s&format=rgb"
 677                 , video_server_url.c_str()
 678                 , (video_server_url.length()>0 && video_server_url.at(video_server_url.length()-1) == '/')?"":"/"
 679                 , (long long) (video_duration * seek_slider.get_value() / 1000.0)
 680                 , clip_width, clip_height, u.c_str());
 681
 682         char *data = a3_curl_http_get(url, NULL);
 683         if (!data) {
 684                 printf("image preview request failed %s\n", url);
 685                 imgbuf->fill(RGBA_TO_UINT(0,0,0,255));
 686                 video_draw_cross(imgbuf);
 687                 preview_path = "";
 688         } else {
 689                 Glib::RefPtr<Gdk::Pixbuf> tmp;
 690                 tmp = Gdk::Pixbuf::create_from_data ((guint8*) data, Gdk::COLORSPACE_RGB, false, 8, clip_width, clip_height, clip_width*3);
 691                 if (clip_width != PREVIEW_WIDTH || clip_height != PREVIEW_HEIGHT) {
 692                         imgbuf->fill(RGBA_TO_UINT(0,0,0,255));
 693                 }
 694                 tmp->copy_area (0, 0, clip_width, clip_height, imgbuf, clip_xoff, clip_yoff);
 695                 preview_path = u;
 696                 free(data);
 697         }
 698         preview_image->set(imgbuf);
 699         preview_image->show();
 700 }