static void start_preview(LiVESButton *button, lives_rfx_t *rfx) { int i; char *com; lives_widget_set_sensitive(mainw->framedraw_preview,FALSE); lives_widget_context_update(); if (mainw->did_rfx_preview) { lives_kill_subprocesses(cfile->handle,TRUE); if (cfile->start==0) { cfile->start=1; cfile->end=cfile->frames; } do_rfx_cleanup(rfx); } com=lives_strdup_printf("%s clear_pre_files \"%s\" 2>%s",prefs->backend_sync,cfile->handle,LIVES_DEVNULL); lives_system(com,TRUE); // clear any .pre files from before for (i=0; i<rfx->num_params; i++) { rfx->params[i].changed=FALSE; } mainw->cancelled=CANCEL_NONE; mainw->error=FALSE; // within do_effect() we check and if do_effect(rfx,TRUE); // actually start effect processing in the background lives_widget_set_sensitive(mainw->framedraw_spinbutton,TRUE); lives_widget_set_sensitive(mainw->framedraw_scale,TRUE); if (mainw->framedraw_frame>cfile->start&&!(cfile->start==0&&mainw->framedraw_frame==1)) lives_spin_button_set_value(LIVES_SPIN_BUTTON(mainw->framedraw_spinbutton),cfile->start); else { load_rfx_preview(rfx); } mainw->did_rfx_preview=TRUE; }
void load_rfx_preview(lives_rfx_t *rfx) { // load a preview of an rfx (rendered effect) in clip editor LiVESPixbuf *pixbuf; FILE *infofile=NULL; int max_frame=0,tot_frames=0; int vend=cfile->start; int retval; int alarm_handle; int current_file=mainw->current_file; boolean retb; boolean timeout; weed_timecode_t tc; const char *img_ext; if (mainw->framedraw_frame==0) mainw->framedraw_frame=1; lives_set_cursor_style(LIVES_CURSOR_BUSY,NULL); clear_mainw_msg(); mainw->write_failed=FALSE; if (cfile->clip_type==CLIP_TYPE_FILE&&vend<=cfile->end) { // pull some frames for 10 seconds alarm_handle=lives_alarm_set(LIVES_DEFAULT_TIMEOUT); do { lives_widget_context_update(); if (is_virtual_frame(mainw->current_file,vend)) { retb=virtual_to_images(mainw->current_file,vend,vend,FALSE,NULL); if (!retb) return; } vend++; timeout=lives_alarm_get(alarm_handle); } while (vend<=cfile->end&&!timeout&&!mainw->cancelled); lives_alarm_clear(alarm_handle); } if (mainw->cancelled) { lives_set_cursor_style(LIVES_CURSOR_NORMAL,NULL); return; } // get message from back end processor while (!(infofile=fopen(cfile->info_file,"r"))&&!mainw->cancelled) { // wait until we get at least 1 frame lives_widget_context_update(); if (cfile->clip_type==CLIP_TYPE_FILE&&vend<=cfile->end) { // if we have a virtual clip (frames inside a video file) // pull some more frames to images to get us started do { retb=FALSE; if (is_virtual_frame(mainw->current_file,vend)) { retb=virtual_to_images(mainw->current_file,vend,vend,FALSE,NULL); if (!retb) { fclose(infofile); return; } } vend++; } while (vend<=cfile->end&&!retb); } else { // otherwise wait lives_usleep(prefs->sleep_time); } } if (mainw->cancelled) { if (infofile) fclose(infofile); lives_set_cursor_style(LIVES_CURSOR_NORMAL,NULL); return; } do { retval=0; mainw->read_failed=FALSE; lives_fgets(mainw->msg,512,infofile); if (mainw->read_failed) retval=do_read_failed_error_s_with_retry(cfile->info_file,NULL,NULL); } while (retval==LIVES_RESPONSE_RETRY); fclose(infofile); if (strncmp(mainw->msg,"completed",9)) { if (rfx->num_in_channels>0) { max_frame=atoi(mainw->msg); } else { int numtok=get_token_count(mainw->msg,'|'); if (numtok>4) { char **array=lives_strsplit(mainw->msg,"|",numtok); max_frame=atoi(array[0]); cfile->hsize=atoi(array[1]); cfile->vsize=atoi(array[2]); cfile->fps=cfile->pb_fps=strtod(array[3],NULL); if (cfile->fps==0) cfile->fps=cfile->pb_fps=prefs->default_fps; tot_frames=atoi(array[4]); lives_strfreev(array); } } } else { max_frame=cfile->end; } lives_set_cursor_style(LIVES_CURSOR_NORMAL,NULL); if (max_frame>0) { if (rfx->num_in_channels==0) { int maxlen=calc_spin_button_width(1.,(double)tot_frames,0); lives_spin_button_set_range(LIVES_SPIN_BUTTON(mainw->framedraw_spinbutton),1,tot_frames); lives_entry_set_width_chars(LIVES_ENTRY(mainw->framedraw_spinbutton),maxlen); lives_widget_queue_draw(mainw->framedraw_spinbutton); lives_widget_queue_draw(mainw->framedraw_scale); } if (mainw->framedraw_frame>max_frame) { lives_spin_button_set_value(LIVES_SPIN_BUTTON(mainw->framedraw_spinbutton),max_frame); mainw->current_file=current_file; return; } } if (rfx->num_in_channels>0) { img_ext=LIVES_FILE_EXT_PRE; } else { img_ext=get_image_ext_for_type(cfile->img_type); } tc=((mainw->framedraw_frame-1.))/cfile->fps*U_SECL; pixbuf=pull_lives_pixbuf_at_size(mainw->current_file,mainw->framedraw_frame,(char *)img_ext, tc,(double)cfile->hsize, (double)cfile->vsize,LIVES_INTERP_BEST); load_framedraw_image(pixbuf); redraw_framedraw_image(); mainw->current_file=current_file; }
static void start_preview(LiVESButton *button, lives_rfx_t *rfx) { int i; char *com; lives_widget_set_sensitive(mainw->framedraw_preview,FALSE); lives_widget_context_update(); if (mainw->did_rfx_preview) { #ifndef IS_MINGW com=lives_strdup_printf("%s stopsubsub \"%s\" 2>/dev/null",prefs->backend_sync,cfile->handle); lives_system(com,TRUE); // try to stop any in-progress preview #else // get pid from backend FILE *rfile; ssize_t rlen; char val[16]; int pid; com=lives_strdup_printf("%s get_pid_for_handle \"%s\"",prefs->backend_sync,cfile->handle); rfile=popen(com,"r"); rlen=fread(val,1,16,rfile); pclose(rfile); memset(val+rlen,0,1); pid=atoi(val); lives_win32_kill_subprocesses(pid,TRUE); #endif lives_free(com); if (cfile->start==0) { cfile->start=1; cfile->end=cfile->frames; } do_rfx_cleanup(rfx); } #ifndef IS_MINGW com=lives_strdup_printf("%s clear_pre_files \"%s\" 2>/dev/null",prefs->backend_sync,cfile->handle); #else com=lives_strdup_printf("%s clear_pre_files \"%s\" 2>NUL",prefs->backend_sync,cfile->handle); #endif lives_system(com,TRUE); // clear any .pre files from before for (i=0; i<rfx->num_params; i++) { rfx->params[i].changed=FALSE; } mainw->cancelled=CANCEL_NONE; mainw->error=FALSE; // within do_effect() we check and if do_effect(rfx,TRUE); // actually start effect processing in the background lives_widget_set_sensitive(mainw->framedraw_spinbutton,TRUE); lives_widget_set_sensitive(mainw->framedraw_scale,TRUE); if (mainw->framedraw_frame>cfile->start&&!(cfile->start==0&&mainw->framedraw_frame==1)) lives_spin_button_set_value(LIVES_SPIN_BUTTON(mainw->framedraw_spinbutton),cfile->start); else { load_rfx_preview(rfx); } mainw->did_rfx_preview=TRUE; }