diff options
Diffstat (limited to 'src/xine-engine/tvmode.c')
| -rw-r--r-- | src/xine-engine/tvmode.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/src/xine-engine/tvmode.c b/src/xine-engine/tvmode.c new file mode 100644 index 000000000..1f419ea4b --- /dev/null +++ b/src/xine-engine/tvmode.c @@ -0,0 +1,235 @@ +/* + * Copyright (C) 2000-2002 the xine project + * + * This file is part of xine, a unix video player. + * + * xine is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * xine is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * $Id: tvmode.c,v 1.1 2002/06/10 21:42:45 mshopf Exp $ + * + * tvmode - TV output selection + * + * Currently uses nvtvd (Dirk Thierbach <dthierbach@gmx.de>) + * for setting TV mode + * xine support hacked in by Matthias Hopf <mat@mshopf.de> + */ + + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#include "nvtvd.h" +/* FIXME: how to include that? */ +/*#include "xine.h" */ + + +/* + * PRIVATE + */ + +/* FIXME: currently the used backend only supports one (1) connection + * to a server and needs this global, external pointer */ +BackCardRec *back_card = 0; +BackAccessRec *back_access = 0; + +static int current_type, current_width, current_height; +static double current_fps; +static TVCrtRegs old_crt; +static TVRegs old_tv; + + +/* TODO: config, and better */ +static TVSystem opt_system = TV_SYSTEM_PAL; +static TVConnect opt_connect = CONNECT_AUTO; + +/* This is the list of possible modes for the used TV system. + * TODO: + * if select_origsize == false: + * The one closest (but larger) to the input stream size is selected. + * if select_origsize == true: + * The first available mode is selected (stick to tv resolution) */ +static int scan_mode_pal[][2] = { + { 768, 576 }, { 800, 576 }, { 720, 576 }, + { 800, 600 }, + { 720, 480 }, { 640, 480 }, + { 800, 450 }, + { 1024, 768 }, + { 0 } +} ; + +/* Overscan sizes to be scaned for - note that we do *not* scan for 'Small' */ +static char *scan_overscan[] = { + "Interl", "Huge", "Large", "DVD", "Normal", 0 +} ; + +/* TODO: flexible */ +static int opt_flicker = -1; +static double opt_aspect = 4.0 / 3.0; + + +/* Try to connect to nvtvd server */ +static void tvmode_connect () { + + CardInfo *card = 0; + + if (back_card) + back_card->closeCard (); + + if (back_client_avail ()) { + if (! (card = back_client_init ())) + back_card = 0; + } else { + back_card = 0; + } + + if (back_card) + back_card->openCard (card); + else + fprintf (stderr, "tvmode: cannot connect to nvtvd - no TV mode switching available\n"); +} + + +/* Disconnect from server */ +static void tvmode_disconnect () { + back_card->closeCard (); + back_card = 0; +} + + +/* Save current CRT and TV register configuration */ +static void tvmode_savestate () { + back_card->getMode (&old_crt, &old_tv); +} + + +/* Restore CRT and TV register configuration */ +static void tvmode_restorestate () { + back_card->setMode (0, &old_crt, &old_tv); + current_type = 0; +} + + +/* Set CRT and TV registers to given TV-Out configuration */ +static void tvmode_settvstate (int width, int height, double fps) { + + TVSettings settings; + TVMode mode; + TVCrtRegs crt; + TVRegs tv; + int found = 0; + int *scanm; + char **scano; + + /* Modify the settings */ + back_card->getSettings (&settings); + if (opt_connect > CONNECT_NONE) { + settings.connector = opt_connect; + } else { + settings.connector = CONNECT_BOTH; + } + if (opt_flicker >= 0) { + settings.flicker = opt_flicker; + } + /* TODO: do that at initialization and save possible combinations */ + /* Find supported TV mode */ + for (scanm = &scan_mode_pal[0][0]; *scanm && ! found; scanm += 2) { + for (scano = scan_overscan; *scano && ! found; scano++) { + fprintf (stderr, "tvmode: trying to use %dx%d %s\n", + scanm[0], scanm[1], *scano); + if (back_card->findBySize (opt_system, scanm[0], scanm[1], *scano, + &mode, &crt, &tv)) { + current_width = scanm[0]; + current_height = scanm[1]; + current_fps = 25; /* TODO: currently this is PAL only */ + found++; + } + } + } + + /* Switch to mode */ + if (found) { + back_card->setModeSettings (TV_PRIV_TVMODE | TV_PRIV_DUALVIEW, + &crt, &tv, &settings); + current_type = 1; + } else { + fprintf (stderr, "tvmode: cannot find any valid TV mode - TV output disabled\n"); + xine_tvmode_exit (); + } +} + + +/* + * PUBLIC + */ + +/* Set to 'regular'(0) or 'tv'(1) state, that is if it is enabled */ +int xine_tvmode_switch (int type, int width, int height, double fps) { + + if (back_card) { + fprintf (stderr, "tvmode: switching to %s\n", type ? "TV" : "default"); + switch (type) { + case 0: + tvmode_restorestate (); + break; + case 1: + tvmode_settvstate (width, height, fps); + break; + default: + fprintf (stderr, "tvmode: illegal type for switching\n"); + tvmode_restorestate (); + } + } else { + fprintf (stderr, "tvmode: not connected to nvtvd for switching\n"); + } + return current_type; +} + + +/* Addapt (maximum) output size to visible area and set pixel aspect and fps */ +void xine_tvmode_size (int *width, int *height, + double *pixelratio, double *fps) { + + switch (current_type) { + case 1: + if (width && *width > current_width) + *width = current_width; + if (height && *height > current_height) + *height = current_height; + if (pixelratio) + *pixelratio = ((double) current_width / current_height) / opt_aspect; + if (fps) + *fps = current_fps; + break; + } +} + +/* Connect to nvtvd server if possible and fetch settings */ +void xine_tvmode_init () { + tvmode_connect (); + if (back_card) + tvmode_savestate (); +} + + +/* Restore old CRT and TV registers and close nvtvd connection */ +void xine_tvmode_exit () { + if (back_card) { + tvmode_restorestate (); + tvmode_disconnect (); + } +} + |