apps/plugins/mpegplayer/video_out.h

   1 /*
   2  * video_out.h
   3  * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
   4  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
   5  *
   6  * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
   7  * See http://libmpeg2.sourceforge.net/ for updates.
   8  *
   9  * mpeg2dec is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * mpeg2dec is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  *
  23  * $Id$
  24  * libmpeg2 sync history:
  25  * 2008-07-01 - CVS revision 1.22
  26  */
  27
  28 #ifndef VIDEO_OUT_H
  29 #define VIDEO_OUT_H
  30
  31 #if LCD_WIDTH >= LCD_HEIGHT
  32 #define SCREEN_WIDTH LCD_WIDTH
  33 #define SCREEN_HEIGHT LCD_HEIGHT
  34 #define LCD_LANDSCAPE
  35 #else /* Assume the screen is rotated on portrait LCDs */
  36 #define SCREEN_WIDTH LCD_HEIGHT
  37 #define SCREEN_HEIGHT LCD_WIDTH
  38 #define LCD_PORTRAIT
  39 #endif
  40
  41 /* Structure to hold width and height values */
  42 struct vo_ext
  43 {
  44     int w, h;
  45 };
  46
  47 /* Structure that defines a rectangle by its edges */
  48 struct vo_rect
  49 {
  50     int l, t, r, b;
  51 };
  52
  53 void vo_draw_frame (uint8_t * const * buf);
  54 bool vo_draw_frame_thumb (uint8_t * const * buf,
  55                           const struct vo_rect *rc);
  56 bool vo_init (void);
  57 bool vo_show (bool show);
  58 bool vo_is_visible(void);
  59 void vo_setup (const mpeg2_sequence_t * sequence);
  60 void vo_set_clip_rect(const struct vo_rect *rc);
  61 bool vo_get_clip_rect(struct vo_rect *rc);
  62 void vo_dimensions(struct vo_ext *sz);
  63 void vo_cleanup (void);
  64 void vo_set_post_draw_callback(void (*cb)(void));
  65
  66 #if NUM_CORES > 1
  67 void vo_lock(void);
  68 void vo_unlock(void);
  69 #else
  70 static inline void vo_lock(void) {}
  71 static inline void vo_unlock(void) {}
  72 #endif
  73
  74 /* Sets all coordinates of a vo_rect to 0 */
  75 void vo_rect_clear(struct vo_rect *rc);
  76 /* Returns true if left >= right or top >= bottom */
  77 bool vo_rect_empty(const struct vo_rect *rc);
  78 /* Initializes a vo_rect using upper-left corner and extents */
  79 void vo_rect_set_ext(struct vo_rect *rc, int x, int y,
  80                      int width, int height);
  81 /* Query if two rectangles intersect
  82  * If either are empty returns false */
  83 bool vo_rects_intersect(const struct vo_rect *rc1,
  84                         const struct vo_rect *rc2);
  85
  86 /* Intersect two rectangles
  87  * Resulting rectangle is placed in rc_dst.
  88  * rc_dst is set to empty if they don't intersect.
  89  * Empty source rectangles do not intersect any rectangle.
  90  * rc_dst may be the same structure as rc1 or rc2.
  91  * Returns true if the resulting rectangle is not empty. */
  92 bool vo_rect_intersect(struct vo_rect *rc_dst,
  93                        const struct vo_rect *rc1,
  94                        const struct vo_rect *rc2);
  95
  96 bool vo_rect_union(struct vo_rect *rc_dst,
  97                    const struct vo_rect *rc1,
  98                    const struct vo_rect *rc2);
  99
 100 void vo_rect_offset(struct vo_rect *rc, int dx, int dy);
 101
 102 #endif /* VIDEO_OUT_H */