more ru xlats, doc updates, proxy tweaks
[goodguy/history.git] / cinelerra-5.1 / cinelerra / mwindow.C
index 1de35cb915b1da82e6fa4dd25292a9c7db759477..992e9f342823dff1d3cec31537a08a3269725982 100644 (file)
@@ -38,6 +38,7 @@
 #include "channeldb.h"
 #include "channelinfo.h"
 #include "clip.h"
+#include "clipedls.h"
 #include "bccmodels.h"
 #include "commercials.h"
 #include "cplayback.h"
@@ -80,7 +81,6 @@
 #include "mutex.h"
 #include "mwindowgui.h"
 #include "mwindow.h"
-#include "nestededls.h"
 #include "new.h"
 #include "panautos.h"
 #include "patchbay.h"
@@ -210,7 +210,6 @@ MWindow::MWindow()
        strcpy(cin_lang,"en");
        channeldb_buz =  new ChannelDB;
        channeldb_v4l2jpeg =  new ChannelDB;
-       //file_server = 0;
        plugin_guis = 0;
        dead_plugins = 0;
        keyframe_threads = 0;
@@ -230,6 +229,8 @@ MWindow::MWindow()
        restart_status = 0;
        screens = 1;
        in_destructor = 0;
+       speed_edl = 0;
+       proxy_beep = 0;
 }
 
 
@@ -244,6 +245,7 @@ MWindow::~MWindow()
 #ifdef HAVE_DVB
        gui->channel_info->stop();
 #endif
+       delete proxy_beep;
        delete create_bd;       create_bd = 0;
        delete create_dvd;      create_dvd = 0;
        delete batch_render;    batch_render = 0;
@@ -251,7 +253,7 @@ MWindow::~MWindow()
        commit_commercial();
        if( commercials && !commercials->remove_user() ) commercials = 0;
        close_mixers();
-
+       if( speed_edl ) { speed_edl->remove_user();  speed_edl = 0; }
 // Save defaults for open plugins
        plugin_gui_lock->lock("MWindow::~MWindow");
        for(int i = 0; i < plugin_guis->size(); i++) {
@@ -318,7 +320,6 @@ MWindow::~MWindow()
        delete gwindow;         gwindow = 0;
        delete cwindow;         cwindow = 0;
        delete gui;             gui = 0;
-       //delete file_server;  file_server = 0; // reusable
        delete mainindexes;     mainindexes = 0;
        delete mainprogress;    mainprogress = 0;
        delete audio_cache;     audio_cache = 0;  // delete the cache after the assets
@@ -470,6 +471,7 @@ void MWindow::init_defaults(BC_Hash* &defaults, char *config_path)
        else
                create_defaults_path(path, CONFIG_FILE);
 
+       delete defaults;
        defaults = new BC_Hash(path);
        defaults->load();
 }
@@ -560,6 +562,9 @@ int MWindow::load_plugin_index(MWindow *mwindow, const char *index_path, const c
                case PLUGIN_TYPE_FFMPEG: {
                        server = new_ffmpeg_server(mwindow, path);
                        break; }
+               case PLUGIN_TYPE_LV2: {
+                       server = new_lv2_server(mwindow, path);
+                       break; }
                }
                if( !server ) continue;
                plugins.append(server);
@@ -628,6 +633,7 @@ int MWindow::init_plugins(MWindow *mwindow, Preferences *preferences)
        fprintf(fp, "%s\n", plugin_path);
        init_plugin_index(mwindow, preferences, fp, plugin_path);
        init_ffmpeg_index(mwindow, preferences, fp);
+       init_lv2_index(mwindow, preferences, fp);
        fclose(fp);
        return load_plugin_index(mwindow, index_path, plugin_path);
 }
@@ -674,25 +680,6 @@ void MWindow::init_plugin_index(MWindow *mwindow, Preferences *preferences,
        scan_plugin_index(mwindow, preferences, fp, plugin_dir, ".", idx);
 }
 
-int MWindow::init_ladspa_index(MWindow *mwindow, Preferences *preferences,
-       const char *index_path, const char *plugin_dir)
-{
-       char plugin_path[BCTEXTLEN], *path = FileSystem::basepath(plugin_dir);
-       strcpy(plugin_path, path);  delete [] path;
-       printf("init ladspa index: %s\n", plugin_dir);
-       FILE *fp = fopen(index_path,"w");
-       if( !fp ) {
-               fprintf(stderr,_("MWindow::init_ladspa_index: "
-                       "can't create plugin index: %s\n"), index_path);
-               return 1;
-       }
-       fprintf(fp, "%d\n", PLUGIN_FILE_VERSION);
-       fprintf(fp, "%s\n", plugin_dir);
-       init_plugin_index(mwindow, preferences, fp, plugin_path);
-       fclose(fp);
-       return 0;
-}
-
 void MWindow::scan_plugin_index(MWindow *mwindow, Preferences *preferences, FILE *fp,
        const char *plug_dir, const char *plug_path, int &idx)
 {
@@ -745,18 +732,17 @@ void MWindow::add_plugins(ArrayList<PluginServer*> &plugins)
 
 void MWindow::init_plugin_tips(ArrayList<PluginServer*> &plugins, const char *lang)
 {
-       const char *cfg_path = File::get_cindat_path();
-       char msg_path[BCTEXTLEN];  int txt = 0;
+       const char *dat_path = File::get_cindat_path();
+       char msg_path[BCTEXTLEN];
        FILE *fp = 0;
        if( BC_Resources::language[0] ) {
                snprintf(msg_path, sizeof(msg_path), "%s/info/plugins.%s",
-                       cfg_path, lang);
+                       dat_path, lang);
                fp = fopen(msg_path, "r");
        }
        if( !fp ) {
-               txt = 1;
                snprintf(msg_path, sizeof(msg_path), "%s/info/plugins.txt",
-                       cfg_path);
+                       dat_path);
                fp = fopen(msg_path, "r");
        }
        if( !fp ) return;
@@ -775,9 +761,8 @@ void MWindow::init_plugin_tips(ArrayList<PluginServer*> &plugins, const char *la
                if( done ) {
                        if( tp > text && *--tp == '\n' ) *tp = 0;
                        if( title[0] ) {
-                               tp = !txt ? title : _(title);
                                int idx = plugins.size();
-                               while( --idx>=0 && strcmp(plugins[idx]->title, tp) );
+                               while( --idx>=0 && strcmp(plugins[idx]->title, title) );
                                if( idx >= 0 ) {
                                        delete [] plugins[idx]->tip;
                                        plugins[idx]->tip = cstrdup(text);
@@ -898,10 +883,25 @@ int MWindow::plugin_exists(char *plugin_path)
        return !plugindb ? 0 : plugin_exists(plugin_path, *plugindb);
 }
 
+void MWindow::remove_plugin_index()
+{
+       char index_path[BCTEXTLEN];
+       MWindow::create_defaults_path(index_path, PLUGIN_FILE);
+       ::remove(index_path);
+}
+
 void MWindow::init_preferences()
 {
        preferences = new Preferences;
        preferences->load_defaults(defaults);
+       const char *lv2_path = getenv("LV2_PATH");
+       if( lv2_path && strcmp(lv2_path, preferences->lv2_path) ) {
+               strncpy(preferences->lv2_path, lv2_path, sizeof(preferences->lv2_path));
+               remove_plugin_index();
+       }
+       else if( !lv2_path && preferences->lv2_path[0] ) {
+               File::setenv_path("LV2_PATH",preferences->lv2_path, 0);
+       }
        session = new MainSession(this);
        session->load_defaults(defaults);
        // set x11_host, screens, window_config
@@ -1157,7 +1157,6 @@ void MWindow::del_mixer(ZWindow *zwindow)
 {
        zwindows_lock->lock("MWindow::del_mixer 0");
        edl->mixers.del_mixer(zwindow->idx);
-       zwindow->idx = -1;
        if( session->selected_zwindow >= 0 ) {
                int i = zwindows.number_of(zwindow);
                if( i >= 0 && i < session->selected_zwindow )
@@ -1217,7 +1216,7 @@ void MWindow::update_mixer_tracks()
 }
 
 void MWindow::queue_mixers(EDL *edl, int command, int wait_tracking,
-               int use_inout, int update_refresh, int toggle_audio)
+               int use_inout, int update_refresh, int toggle_audio, int loop_play)
 {
        zwindows_lock->lock("MWindow::queue_mixers");
        for( int vidx=0; vidx<zwindows.size(); ++vidx ) {
@@ -1249,14 +1248,15 @@ void MWindow::queue_mixers(EDL *edl, int command, int wait_tracking,
                }
                zwindow->change_source(mixer_edl);
                zwindow->issue_command(command,
-                       wait_tracking, use_inout, update_refresh, toggle_audio);
+                       wait_tracking, use_inout, update_refresh, toggle_audio, loop_play);
        }
        zwindows_lock->unlock();
 }
 
-void MWindow::refresh_mixers()
+void MWindow::refresh_mixers(int dir)
 {
-       queue_mixers(edl,CURRENT_FRAME,0,0,1,0);
+       int command = dir >= 0 ? CURRENT_FRAME : LAST_FRAME;
+       queue_mixers(edl,command,0,0,1,0,0);
 }
 
 void MWindow::stop_mixers()
@@ -1264,16 +1264,17 @@ void MWindow::stop_mixers()
        for( int vidx=0; vidx<zwindows.size(); ++vidx ) {
                ZWindow *zwindow = zwindows[vidx];
                if( zwindow->idx < 0 ) continue;
-               zwindow->issue_command(STOP, 0, 0, 0, 0);
+               zwindow->issue_command(STOP, 0, 0, 0, 0, 0);
        }
 }
 
-void MWindow::close_mixers()
+void MWindow::close_mixers(int destroy)
 {
        zwindows_lock->lock("MWindow::close_mixers");
-       for( int i=0; i<zwindows.size(); ++i ) {
+       for( int i=zwindows.size(); --i>=0; ) {
                ZWindow *zwindow = zwindows[i];
                if( zwindow->idx < 0 ) continue;
+               zwindow->destroy = destroy;
                ZWindowGUI *zgui = zwindow->zgui;
                zgui->lock_window("MWindow::select_zwindow 0");
                zgui->set_done(0);
@@ -1287,35 +1288,55 @@ void MWindow::close_mixers()
        }
 }
 
+ZWindow *MWindow::create_mixer(Indexable *indexable)
+{
+       ArrayList<Indexable*> new_assets;
+       new_assets.append(indexable);
+       Track *track = edl->tracks->last;
+       load_assets(&new_assets, 0, LOADMODE_NEW_TRACKS, 0, 0, 0, 0, 0, 0);
+       track = !track ? edl->tracks->first : track->next;
+       Mixer *mixer = 0;
+       ZWindow *zwindow = get_mixer(mixer);
+       while( track ) {
+               track->play = track->record = 0;
+               if( track->data_type == TRACK_VIDEO ) {
+                       sprintf(track->title, _("Mixer %d"), zwindow->idx);
+               }
+               mixer->mixer_ids.append(track->get_mixer_id());
+               track = track->next;
+       }
+       if(  indexable->is_asset ) {
+               char *path = indexable->path;
+               char *tp = strrchr(path, '/');
+               if( !tp ) tp = path; else ++tp;
+               zwindow->set_title(tp);
+       }
+       else {
+               char *title = ((EDL*)indexable)->local_session->clip_title;
+               zwindow->set_title(title);
+       }
+       return zwindow;
+}
+
 void MWindow::create_mixers()
 {
-       if( !session->drag_assets->size() ) return;
+       if( !session->drag_assets->size() &&
+           !session->drag_clips->size() ) return;
        undo->update_undo_before();
 
        select_zwindow(0);
        ArrayList<ZWindow *>new_mixers;
 
-       for( int i=0; i<session->drag_assets->total; ++i ) {
-               Indexable *indexable = session->drag_assets->values[i];
-               ArrayList<Indexable*> new_assets;
-               new_assets.append(indexable);
-               Track *track = edl->tracks->last;
-               load_assets(&new_assets, -1, LOADMODE_NEW_TRACKS, 0, 0, 0, 0, 0, 0);
-               track = !track ? edl->tracks->first : track->next;
-               Mixer *mixer = 0;
-               ZWindow *zwindow = get_mixer(mixer);
-               while( track ) {
-                       track->play = track->record = 0;
-                       if( track->data_type == TRACK_VIDEO ) {
-                               sprintf(track->title, _("Mixer %d"), zwindow->idx);
-                       }
-                       mixer->mixer_ids.append(track->get_mixer_id());
-                       track = track->next;
-               }
-               char *path = indexable->path;
-               char *tp = strrchr(path, '/');
-               if( !tp ) tp = path; else ++tp;
-               zwindow->set_title(tp);
+       for( int i=0; i<session->drag_assets->size(); ++i ) {
+               Indexable *indexable = session->drag_assets->get(i);
+               if( !indexable->have_video() ) continue;
+               ZWindow *zwindow = create_mixer(indexable);
+               new_mixers.append(zwindow);
+       }
+       for( int i=0; i<session->drag_clips->size(); ++i ) {
+               Indexable *indexable = (Indexable*)session->drag_clips->get(i);
+               if( !indexable->have_video() ) continue;
+               ZWindow *zwindow = create_mixer(indexable);
                new_mixers.append(zwindow);
        }
 
@@ -1550,19 +1571,14 @@ void MWindow::restart_brender()
 //printf("MWindow::restart_brender 1\n");
        if( !brender_active || !preferences->use_brender ) return;
        if( !brender ) return;
-       int locked  = gui->get_window_lock();
-       if( locked ) gui->unlock_window();
        brender->restart(edl);
-       if( locked ) gui->lock_window("MWindow::restart_brender");
 }
 
 void MWindow::stop_brender()
 {
        if( !brender ) return;
-       int locked  = gui->get_window_lock();
-       if( locked ) gui->unlock_window();
+// cannot be holding mwindow->gui display lock
        brender->stop();
-       if( locked ) gui->lock_window("MWindow::stop_brender");
 }
 
 int MWindow::brender_available(int position)
@@ -1604,7 +1620,9 @@ void MWindow::set_brender_active(int v, int update)
        }
        else {
                edl->session->brender_start = edl->session->brender_end = 0;
+               gui->unlock_window();
                stop_brender();
+               gui->lock_window("MWindow::set_brender_active");
        }
        if( update ) {
                gui->update_timebar(0);
@@ -1614,37 +1632,49 @@ void MWindow::set_brender_active(int v, int update)
 
 int MWindow::has_commercials()
 {
+#ifdef HAVE_COMMERCIAL
        return theme->use_commercials;
+#else
+       return 0;
+#endif
 }
 
 void MWindow::init_commercials()
 {
+#ifdef HAVE_COMMERCIAL
        if( !commercials ) {
                commercials = new Commercials(this);
                commercial_active = 0;
        }
        else
                commercials->add_user();
+#endif
 }
 
 void MWindow::commit_commercial()
 {
+#ifdef HAVE_COMMERCIAL
        if( !commercial_active ) return;
        commercial_active = 0;
        if( !commercials ) return;
        commercials->commitDb();
+#endif
 }
 
 void MWindow::undo_commercial()
 {
+#ifdef HAVE_COMMERCIAL
        if( !commercial_active ) return;
        commercial_active = 0;
        if( !commercials ) return;
        commercials->undoDb();
+#endif
 }
 
 int MWindow::put_commercial()
 {
+       int result = 0;
+#ifdef HAVE_COMMERCIAL
        double start = edl->local_session->get_selectionstart();
        double end = edl->local_session->get_selectionend();
        if( start >= end ) return 0;
@@ -1652,7 +1682,6 @@ int MWindow::put_commercial()
        const char *errmsg = 0;
        int count = 0;
        Tracks *tracks = edl->tracks;
-       int result = 0;
        //check it
        for(Track *track=tracks->first; track && !errmsg; track=track->next) {
                if( track->data_type != TRACK_VIDEO ) continue;
@@ -1705,6 +1734,7 @@ int MWindow::put_commercial()
                undo_commercial();
                result = 1;
        }
+#endif
        return result;
 }
 
@@ -1726,6 +1756,17 @@ void MWindow::stop_playback(int wait)
        }
 }
 
+void MWindow::stop_transport()
+{
+       gui->stop_transport(gui->get_window_lock() ? "MWindow::stop_transport" : 0);
+}
+
+void MWindow::beep(double freq, double secs, double gain)
+{
+       if( !proxy_beep ) proxy_beep = new ProxyBeep(this);
+       proxy_beep->tone(freq, secs, gain);
+}
+
 int MWindow::load_filenames(ArrayList<char*> *filenames,
        int load_mode,
        int update_filename)
@@ -1938,10 +1979,10 @@ if(debug) printf("MWindow::load_filenames %d\n", __LINE__);
 // Load temporary EDL for nesting.
                                EDL *nested_edl = new EDL;
                                nested_edl->create_objects();
-                               nested_edl->set_path(filenames->get(i));
                                nested_edl->load_xml(&xml_file, LOAD_ALL);
 //printf("MWindow::load_filenames %p %s\n", nested_edl, nested_edl->project_path);
-                               edl_to_nested(new_edl, nested_edl);
+                               new_edl->create_nested(nested_edl);
+                               new_edl->set_path(filenames->get(i));
                                nested_edl->Garbage::remove_user();
                        }
                        else {
@@ -2025,40 +2066,33 @@ if(debug) printf("MWindow::load_filenames %d\n", __LINE__);
 
 // Add new assets to EDL and schedule assets for index building.
        int got_indexes = 0;
-       for(int i = 0; i < new_edls.size(); i++)
-       {
+       for( int i=0; i<new_edls.size(); ++i ) {
                EDL *new_edl = new_edls[i];
-               for(int j = 0; j < new_edl->nested_edls->size(); j++)
-               {
-                       mainindexes->add_next_asset(0,
-                               new_edl->nested_edls->get(j));
+               for( int j=0; j<new_edl->nested_edls.size(); ++j ) {
+                       mainindexes->add_next_asset(0, new_edl->nested_edls[j]);
+                       edl->nested_edls.update_index(new_edl->nested_edls[j]);
                        got_indexes = 1;
-                       edl->nested_edls->update_index(new_edl->nested_edls->get(j));
                }
 
        }
 
 if(debug) printf("MWindow::load_filenames %d\n", __LINE__);
-       for(int i = 0; i < new_assets.size(); i++)
-       {
+       for( int i=0; i<new_assets.size(); ++i ) {
                Asset *new_asset = new_assets[i];
 
                File *new_file = 0;
                int got_it = 0;
-               for(int j = 0; j < new_files.size(); j++)
-               {
+               for( int j=0; j<new_files.size(); ++j ) {
                        new_file = new_files[j];
-                       if(!strcmp(new_file->asset->path,
-                               new_asset->path))
-                       {
+                       if( !strcmp(new_file->asset->path, new_asset->path) ) {
                                got_it = 1;
                                break;
                        }
                }
 
                mainindexes->add_next_asset(got_it ? new_file : 0, new_asset);
-               got_indexes = 1;
                edl->assets->update(new_asset);
+               got_indexes = 1;
        }
 if(debug) printf("MWindow::load_filenames %d\n", __LINE__);
 
@@ -2102,6 +2136,7 @@ if(debug) printf("MWindow::load_filenames %d\n", __LINE__);
                edl->session->proxy_scale = 1;
                edl->session->proxy_use_scaler = 0;
                edl->session->proxy_auto_scale = 0;
+               edl->session->proxy_beep = 0;
                edl->local_session->preview_start = 0;
                edl->local_session->preview_end = 0;
                edl->local_session->loop_playback = 0;
@@ -2131,8 +2166,14 @@ if(debug) printf("MWindow::load_filenames %d\n", __LINE__);
                        }
                }
                gui->unlock_window(); // to update progress bar
-               render_proxy(orig_idxbls);
+               int ret = render_proxy(orig_idxbls);
                gui->lock_window("MWindow::load_filenames");
+               if( ret >= 0 && edl->session->proxy_beep ) {
+                       if( ret > 0 )
+                               beep(2000., 1.5, 0.5);
+                       else
+                               beep(4000., 0.25, 0.5);
+               }
        }
 
 // need to update undo before project, since mwindow is unlocked & a new load
@@ -2179,7 +2220,7 @@ if(debug) printf("MWindow::load_filenames %d\n", __LINE__);
        return 0;
 }
 
-void MWindow::render_proxy(ArrayList<Indexable *> &new_idxbls)
+int MWindow::render_proxy(ArrayList<Indexable *> &new_idxbls)
 {
        Asset *format_asset = new Asset;
        format_asset->format = FILE_FFMPEG;
@@ -2207,6 +2248,7 @@ void MWindow::render_proxy(ArrayList<Indexable *> &new_idxbls)
                        &proxy_render.orig_idxbls, &proxy_render.orig_proxies);
        }
        format_asset->remove_user();
+       return !result ? proxy_render.needed_proxies.size() : -1;
 }
 
 void MWindow::test_plugins(EDL *new_edl, char *path)
@@ -2250,32 +2292,37 @@ void MWindow::test_plugins(EDL *new_edl, char *path)
 }
 
 
-void MWindow::init_shm()
+void MWindow::init_shm(const char *pfn, int64_t min)
 {
+       int64_t result = 0;
 // Fix shared memory
-       FILE *fd = fopen("/proc/sys/kernel/shmmax", "w");
-       if(fd) {
-               fprintf(fd, "0x7fffffff");
+       FILE *fd = fopen(pfn, "r");
+       if( fd ) {
+               fscanf(fd, "%jd", &result);
                fclose(fd);
+               if( result >= min ) return;
        }
-       fd = 0;
 
-       fd = fopen("/proc/sys/kernel/shmmax", "r");
-       if(!fd) {
-               MainError::show_error("MWindow::init_shm: couldn't open /proc/sys/kernel/shmmax for reading.\n");
+       fd = fopen(pfn, "w");
+       if( !fd ) return;
+       fprintf(fd, "0x%jx", min);
+       fclose(fd);
+
+       fd = fopen(pfn, "r");
+       if( !fd ) {
+               eprintf(_("MWindow::init_shm: couldn't open %s for reading.\n"), pfn);
                return;
        }
 
-       int64_t result = 0;
        fscanf(fd, "%jd", &result);
        fclose(fd);
-       fd = 0;
-       if(result < 0x7fffffff) {
-               eprintf(_("MWindow::init_shm: /proc/sys/kernel/shmmax is %p.\n"
+       if( result < min ) {
+               eprintf(_("MWindow::init_shm: %s is %p.\n"
                        "you probably need to be root, or:\n"
-                       "as root, run: echo 0x7fffffff > /proc/sys/kernel/shmmax\n"
+                       "as root, run: echo 0x%jx > %s\n"
                        "before trying to start cinelerra.\n"
-                       "It should be at least 0x7fffffff for Cinelerra.\n"), (void *)result);
+                       "It should be at least 0x%jx for Cinelerra.\n"),
+                       pfn, (void *)result, min, pfn, min);
        }
 }
 
@@ -2323,9 +2370,6 @@ void MWindow::create_objects(int want_gui,
        BC_Resources::init_fontconfig(string);
        if(debug) PRINT_TRACE
 
-// Initialize before too much else is running
-// Preferences & theme are required for building MPEG table of contents
-
 // Default project created here
        init_edl();
        if(debug) PRINT_TRACE
@@ -2460,7 +2504,8 @@ void MWindow::create_objects(int want_gui,
                &MWindowGUI::keyboard_listener);
 
        hide_splash();
-       init_shm();
+       init_shm("/proc/sys/kernel/shmmax", 0x7fffffff);
+       init_shm("/proc/sys/kernel/shmmni", 0x4000);
        if(debug) PRINT_TRACE
 
        BC_WindowBase::get_resources()->vframe_shm = 1;
@@ -3204,38 +3249,6 @@ if(debug) printf("MWindow::asset_to_edl %d\n", __LINE__);
        return 0;
 }
 
-int MWindow::edl_to_nested(EDL *new_edl,
-       EDL *nested_edl)
-{
-
-// Keep frame rate, sample rate, and output size unchanged.
-// These parameters would revert the project if VWindow displayed an asset
-// of different size than the project.
-
-
-
-// Nest all video & audio outputs
-       new_edl->session->video_tracks = 1;
-       new_edl->session->audio_tracks = nested_edl->session->audio_channels;
-       new_edl->create_default_tracks();
-
-
-
-       new_edl->insert_asset(0,
-               nested_edl,
-               0,
-               0,
-               0);
-
-       char string[BCTEXTLEN];
-       FileSystem fs;
-       fs.extract_name(string, nested_edl->path);
-//printf("MWindow::edl_to_nested %p %s\n", nested_edl, nested_edl->path);
-
-       strcpy(new_edl->local_session->clip_title, string);
-
-       return 0;
-}
 
 // Reset everything after a load.
 void MWindow::update_project(int load_mode)
@@ -3243,7 +3256,6 @@ void MWindow::update_project(int load_mode)
        const int debug = 0;
 
        if(debug) PRINT_TRACE
-       init_brender();
        edl->tracks->update_y_pixels(theme);
 
        if(debug) PRINT_TRACE
@@ -3257,6 +3269,7 @@ void MWindow::update_project(int load_mode)
        gui->update(1, 1, 1, 1, 1, 1, 1);
        if(debug) PRINT_TRACE
        gui->unlock_window();
+       init_brender();
 
        cwindow->gui->lock_window("MWindow::update_project 1");
        cwindow->update(0, 0, 1, 1, 1);
@@ -3283,9 +3296,13 @@ void MWindow::update_project(int load_mode)
                        if( !vwindow->is_running() ) continue;
                        vwindow->close_window();
                }
+               for( int i=0; i<edl->vwindow_edls.size(); ++i ) {
+                       VWindow *vwindow = get_viewer(1, -1);
+                       vwindow->change_source(i);
+               }
                if(debug) PRINT_TRACE
                select_zwindow(0);
-               close_mixers();
+               close_mixers(0);
 
                for( int i=0; i<edl->mixers.size(); ++i ) {
                        Mixer *mixer = edl->mixers[i];
@@ -3364,10 +3381,13 @@ void MWindow::save_backup()
        FileXML file;
        edl->optimize();
        edl->set_path(session->filename);
-       char backup_path[BCTEXTLEN];
+       char backup_path[BCTEXTLEN], backup_path1[BCTEXTLEN];
        snprintf(backup_path, sizeof(backup_path), "%s/%s",
                File::get_config_path(), BACKUP_FILE);
-       edl->save_xml(&file, backup_path, 0, 0);
+       snprintf(backup_path1, sizeof(backup_path1), "%s/%s",
+               File::get_config_path(), BACKUP_FILE1);
+       rename(backup_path, backup_path1);
+       edl->save_xml(&file, backup_path);
        file.terminate_string();
        FileSystem fs;
        fs.complete_path(backup_path);
@@ -3403,6 +3423,29 @@ void MWindow::load_backup()
        save_backup();
 }
 
+
+void MWindow::save_undo_data()
+{
+       char perpetual_path[BCTEXTLEN];
+       snprintf(perpetual_path, sizeof(perpetual_path), "%s/%s",
+               File::get_config_path(), PERPETUAL_FILE);
+       FILE *fp = fopen(perpetual_path,"w");
+       if( !fp ) return;
+       undo->save(fp);
+       fclose(fp);
+}
+
+void MWindow::load_undo_data()
+{
+       char perpetual_path[BCTEXTLEN];
+       snprintf(perpetual_path, sizeof(perpetual_path), "%s/%s",
+               File::get_config_path(), PERPETUAL_FILE);
+       FILE *fp = fopen(perpetual_path,"r");
+       if( !fp ) return;
+       undo->load(fp);
+       fclose(fp);
+}
+
 static inline int gcd(int m, int n)
 {
        int r;
@@ -3987,29 +4030,9 @@ int MWindow::select_asset(Asset *asset, int vstream, int astream, int delete_tra
                if( channels < 1 ) channels = 1;
                if( channels > 6 ) channels = 6;
                session->audio_tracks = session->audio_channels = channels;
-               switch( channels ) {
-               case 6:
-                       session->achannel_positions[0] = 90;
-                       session->achannel_positions[1] = 150;
-                       session->achannel_positions[2] = 30;
-                       session->achannel_positions[3] = 210;
-                       session->achannel_positions[4] = 330;
-                       session->achannel_positions[5] = 270;
-                       break;
-               case 2:
-                       session->achannel_positions[0] = 180;
-                       session->achannel_positions[1] = 0;
-                       break;
-               case 1:
-                       session->achannel_positions[1] = 90;
-                       break;
-               default: {
-                       if( !channels ) break;
-                       double t = 0, dt = 360./channels;
-                       for( int i=channels; --i>=0; t+=dt )
-                               session->achannel_positions[i] = int(t+0.5);
-                       break; }
-               }
+
+               int *achannel_positions = preferences->channel_positions[session->audio_channels-1];
+               memcpy(&session->achannel_positions, achannel_positions, sizeof(session->achannel_positions));
                remap_audio(MWindow::AUDIO_1_TO_1);
 
                if( delete_tracks ) {