include/lib/dvb/subtitle.h

   1 #ifndef __subtitle_h
   2 #define __subtitle_h
   3
   4 #include <lib/base/ebase.h>
   5
   6 typedef unsigned char __u8;
   7
   8 struct subtitle_clut_entry
   9 {
  10         __u8 Y, Cr, Cb, T;
  11 };
  12
  13 struct subtitle_clut
  14 {
  15         int clut_id;
  16         int size;
  17         struct subtitle_clut_entry entries[16];
  18         int CLUT_version_number;
  19
  20         struct subtitle_clut *next;
  21 };
  22
  23 struct subtitle_page_region
  24 {
  25         int region_id;
  26         int region_horizontal_address;
  27         int region_vertical_address;
  28         struct subtitle_page_region *next;
  29 };
  30
  31 struct subtitle_region_object
  32 {
  33         int object_id;
  34         int object_type;
  35         int object_provider_flag;
  36
  37         int object_horizontal_position;
  38         int object_vertical_position;
  39
  40                 // not supported right now...
  41         int foreground_pixel_value;
  42         int background_pixel_value;
  43
  44         struct subtitle_region_object *next;
  45 };
  46
  47 struct subtitle_region
  48 {
  49         int region_id;
  50         int region_version_number;
  51         int region_height, region_width;
  52         __u8 *region_buffer;
  53
  54         int clut_id;
  55
  56         struct subtitle_region_object *region_objects;
  57
  58         struct subtitle_region *next;
  59 };
  60
  61 struct subtitle_page
  62 {
  63         int page_id;
  64         time_t page_time_out;
  65         int page_version_number;
  66         int pcs_size;
  67         struct subtitle_page_region *page_regions;
  68
  69         struct subtitle_region *regions;
  70
  71         struct subtitle_clut *cluts;
  72
  73         struct subtitle_page *next;
  74 };
  75
  76 struct subtitle_ctx
  77 {
  78         struct subtitle_page *pages;
  79
  80         int current_clut_id, current_clut_page_id;
  81
  82         __u8 *screen_buffer;
  83         int screen_width, screen_height;
  84         int screen_enabled;
  85         eTimer *timeout_timer;
  86
  87         int bbox_left, bbox_top, bbox_right, bbox_bottom;
  88
  89         void (*set_palette)(struct subtitle_clut *pal);
  90 };
  91
  92 struct bitstream
  93 {
  94         __u8 *data;
  95         int size;
  96         int avail;
  97         int consumed;
  98 };
  99
 100 void bitstream_init(struct bitstream *bit, void *buffer, int size);
 101 int bitstream_get(struct bitstream *bit);
 102 void subtitle_process_line(struct subtitle_ctx *sub, struct subtitle_page *page, int object_id, int line, __u8 *data, int len);
 103 int subtitle_process_pixel_data(struct subtitle_ctx *sub, struct subtitle_page *page, int object_id, int *linenr, int *linep, __u8 *data);
 104 int subtitle_process_segment(struct subtitle_ctx *sub, __u8 *segment);
 105 void subtitle_process_pes(struct subtitle_ctx *sub, void *buffer, int len);
 106 void subtitle_clear_screen(struct subtitle_ctx *sub);
 107 void subtitle_reset(struct subtitle_ctx *sub);
 108 void subtitle_redraw_all(struct subtitle_ctx *sub);
 109 void subtitle_redraw(struct subtitle_ctx *sub, int pageid);
 110 void subtitle_screen_enable(struct subtitle_ctx *sub, int enable);
 111
 112 #endif