overlay/overlay.h

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef OVERLAY_H
  26 #define OVERLAY_H
  27
  28 #include"config.h"
  29
  30 #include <cairo.h>
  31
  32 enum position {
  33         POS_UNSET = -1,
  34
  35         POS_LEFT = 0,
  36         POS_CENTRE = 1,
  37         POS_RIGHT = 2,
  38
  39         POS_TOP = 0 << 4,
  40         POS_MIDDLE = 1 << 4,
  41         POS_BOTTOM = 2 << 4,
  42
  43         POS_TOP_LEFT = POS_TOP | POS_LEFT,
  44         POS_TOP_CENTRE = POS_TOP | POS_CENTRE,
  45         POS_TOP_RIGHT = POS_TOP | POS_RIGHT,
  46
  47         POS_MIDDLE_LEFT = POS_MIDDLE | POS_LEFT,
  48         POS_MIDDLE_CENTRE = POS_MIDDLE | POS_CENTRE,
  49         POS_MIDDLE_RIGHT = POS_MIDDLE | POS_RIGHT,
  50
  51         POS_BOTTOM_LEFT = POS_BOTTOM | POS_LEFT,
  52         POS_BOTTOM_CENTRE = POS_BOTTOM | POS_CENTRE,
  53         POS_BOTTOM_RIGHT = POS_BOTTOM | POS_RIGHT,
  54 };
  55
  56 struct overlay {
  57         cairo_surface_t *surface;
  58         void (*show)(struct overlay *);
  59         void (*hide)(struct overlay *);
  60 };
  61
  62 extern const cairo_user_data_key_t overlay_key;
  63
  64 struct config {
  65         struct config_section {
  66                 struct config_section *next;
  67                 struct config_value {
  68                         struct config_value *next;
  69                         char *name;
  70                         char *value;
  71                 } *values;
  72                 char name[0];
  73         } *sections;
  74 };
  75
  76 void config_init(struct config *config);
  77 void config_parse_string(struct config *config, const char *str);
  78 void config_set_value(struct config *config,
  79                       const char *section,
  80                       const char *name,
  81                       const char *value);
  82 const char *config_get_value(struct config *config,
  83                              const char *section,
  84                              const char *name);
  85
  86 #ifdef HAVE_OVERLAY_XVLIB
  87 cairo_surface_t *x11_overlay_create(struct config *config, int *width, int *height);
  88 void x11_overlay_stop(void);
  89 #else
  90 static inline cairo_surface_t *x11_overlay_create(struct config *config, int *width, int *height) { return NULL; }
  91 static inline void x11_overlay_stop(void) { }
  92 #endif
  93
  94 #ifdef HAVE_OVERLAY_XLIB
  95 cairo_surface_t *x11_window_create(struct config *config, int *width, int *height);
  96 #else
  97 static inline cairo_surface_t *x11_window_create(struct config *config, int *width, int *height) { return NULL; }
  98 #endif
  99
 100 cairo_surface_t *kms_overlay_create(struct config *config, int *width, int *height);
 101
 102 #endif /* OVERLAY_H */