Quick hack I was asked to make. Converts & Burns subtitles to movies. NOTE: See line 38

subtitleburn.cpp

/*
    Copyright © 2014 Mislav Blažević <[email protected]>
    This work is free. You can redistribute it and/or modify it under the
    terms of the Do What The Fuck You Want To Public License, Version 2,
    as published by Sam Hocevar. See the COPYING file for more details.
*/
#include <gtk/gtk.h>
#include <vte/vte.h>

GtkWidget *buttonvid, *buttonsub, *term;

pid_t spawn_recode(gchar* subfile)
{
    gchar* recode_argv[4];
    recode_argv[0] = "recode";
    recode_argv[1] = "windows-1250..utf8";
    recode_argv[2] = subfile;
    recode_argv[3] = NULL;
    return vte_terminal_fork_command(VTE_TERMINAL(term), "recode", recode_argv, NULL, NULL, FALSE, FALSE, FALSE);
}

void spawn_ffmpeg(gchar* vidfile, gchar* subfile)
{
    gchar* ffmpeg_argv[15];
    ffmpeg_argv[0] = "ffmpeg";
    ffmpeg_argv[1] = "-i";
    ffmpeg_argv[2] = vidfile;
    ffmpeg_argv[3] = "-acodec";
    ffmpeg_argv[4] = "copy";
    ffmpeg_argv[5] = "-vcodec";
    ffmpeg_argv[6] = "libx264";
    ffmpeg_argv[7] = "-crf";
    ffmpeg_argv[8] = "18";
    ffmpeg_argv[9] = "-preset";
    ffmpeg_argv[10] = "medium";
    ffmpeg_argv[11] = "-vf";
    ffmpeg_argv[12] = g_strdup_printf("subtitles=%s", subfile);
    ffmpeg_argv[13] = "/home/krofna/converted.avi";
    ffmpeg_argv[14] = NULL;
    vte_terminal_fork_command(VTE_TERMINAL(term), "ffmpeg", ffmpeg_argv, NULL, NULL, FALSE, FALSE, FALSE);

    g_free(ffmpeg_argv[12]);
}

void watch_callback(GPid pid, gint status, gpointer user_data)
{
    gchar* subfile = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(buttonsub));
    gchar* vidfile = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(buttonvid));
    spawn_ffmpeg(vidfile, subfile);
}

void magic(bool recode)
{
    gchar* subfile = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(buttonsub));
    gchar* vidfile = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(buttonvid));
    if (!(subfile && vidfile))
        goto cleanup;

    if (recode)
        g_child_watch_add(spawn_recode(subfile), &watch_callback, 0);
    else
        spawn_ffmpeg(vidfile, subfile);

cleanup:
    g_free(subfile);
    g_free(vidfile);
}

void conv(GtkWidget* button, void*)
{
    magic(true);
}

void burn(GtkWidget* button, void*)
{
    magic(false);
}

int main(int argc, char* argv[])
{
    GtkWidget* window;

    gtk_init(&argc, &argv);

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "Krofnikator");
    gtk_container_set_border_width(GTK_CONTAINER(window), 15);
    g_signal_connect(window, "destroy", G_CALLBACK (gtk_main_quit), NULL);

    GtkWidget* box = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5);
    GtkWidget* vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 5);

    GtkWidget* labelvid = gtk_label_new("Video");
    gtk_box_pack_start(GTK_BOX(box), labelvid, TRUE, TRUE, 5);
    buttonvid = gtk_file_chooser_button_new(0, GTK_FILE_CHOOSER_ACTION_OPEN);
    gtk_widget_set_size_request(buttonvid, 200, 30);
    gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(buttonvid), "/home/dunja");
    gtk_box_pack_start(GTK_BOX(box), buttonvid, TRUE, TRUE, 5);

    GtkWidget* labelsub = gtk_label_new("Subtitles");
    gtk_box_pack_start(GTK_BOX(box), labelsub, TRUE, TRUE, 5);
    buttonsub = gtk_file_chooser_button_new(0, GTK_FILE_CHOOSER_ACTION_OPEN);
    gtk_widget_set_size_request(buttonsub, 200, 30);
    gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(buttonsub), "/home/dunja");
    gtk_box_pack_start(GTK_BOX(box), buttonsub, TRUE, TRUE, 5);

    GtkWidget* buttonconv = gtk_button_new_with_label("Convert & Burn");
    g_signal_connect(buttonconv, "clicked", G_CALLBACK(conv), 0);
    gtk_box_pack_start(GTK_BOX(box), buttonconv, TRUE, TRUE, 5);
    
    GtkWidget* buttonburn = gtk_button_new_with_label("Burn");
    g_signal_connect(buttonburn, "clicked", G_CALLBACK(burn), 0);
    gtk_box_pack_start(GTK_BOX(box), buttonburn, TRUE, TRUE, 5);

    term = vte_terminal_new();

    gtk_box_pack_start(GTK_BOX(vbox), box, TRUE, TRUE, 5);
    gtk_box_pack_start(GTK_BOX(vbox), term, TRUE, TRUE, 5);

    gtk_container_add(GTK_CONTAINER(window), vbox);
    gtk_widget_show_all(window);
    gtk_main();
    return 0;
}