guicast/bcbitmap.h

   1 #ifndef BCBITMAP_H
   2 #define BCBITMAP_H
   3
   4 #include <X11/Xlib.h>
   5 #include <sys/ipc.h>
   6 #include <sys/shm.h>
   7 #include <X11/extensions/XShm.h>
   8 #include <X11/extensions/Xvlib.h>
   9
  10 #include "bcwindowbase.inc"
  11 #include "colors.h"
  12 #include "sizes.h"
  13 #include "vframe.inc"
  14
  15 //#define BITMAP_RING 1
  16 #define BITMAP_RING 4
  17
  18 class BC_Bitmap
  19 {
  20 public:
  21         BC_Bitmap(BC_WindowBase *parent_window, unsigned char *png_data);
  22         BC_Bitmap(BC_WindowBase *parent_window, VFrame *frame);
  23
  24 // Shared memory is a problem in X because it's asynchronous and there's
  25 // no easy way to join with the blitting process.
  26         BC_Bitmap(BC_WindowBase *parent_window,
  27                 int w,
  28                 int h,
  29                 int color_model,
  30                 int use_shm = 1);
  31         virtual ~BC_Bitmap();
  32
  33 // transfer VFrame
  34         int read_frame(VFrame *frame,
  35                 int in_x, int in_y, int in_w, int in_h,
  36                 int out_x, int out_y, int out_w, int out_h);
  37 // x1, y1, x2, y2 dimensions of output area
  38         int read_frame(VFrame *frame,
  39                 int x1, int y1, int x2, int y2);
  40 // Reset bitmap to match the new parameters
  41         int match_params(int w,
  42                 int h,
  43                 int color_model,
  44                 int use_shm);
  45 // Test if bitmap already matches parameters
  46         int params_match(int w, int h, int color_model, int use_shm);
  47
  48 // When showing the same frame twice need to rewind
  49         void rewind_ring();
  50 // If dont_wait is true, the XSync comes before the flash.
  51 // For YUV bitmaps, the image is scaled to fill dest_x ... w * dest_y ... h
  52         int write_drawable(Drawable &pixmap,
  53                         GC &gc,
  54                         int source_x,
  55                         int source_y,
  56                         int source_w,
  57                         int source_h,
  58                         int dest_x,
  59                         int dest_y,
  60                         int dest_w,
  61                         int dest_h,
  62                         int dont_wait);
  63         int write_drawable(Drawable &pixmap,
  64                         GC &gc,
  65                         int dest_x,
  66                         int dest_y,
  67                         int source_x,
  68                         int source_y,
  69                         int dest_w,
  70                         int dest_h,
  71                         int dont_wait);
  72 // the bitmap must be wholly contained in the source during a GetImage
  73         int read_drawable(Drawable &pixmap, int source_x, int source_y);
  74
  75         int rotate_90(int side);
  76         int get_w();
  77         int get_h();
  78         void transparency_bitswap();
  79 // Data pointers for current ring buffer
  80         unsigned char* get_data();
  81         unsigned char* get_y_plane();
  82         unsigned char* get_u_plane();
  83         unsigned char* get_v_plane();
  84 // Get the frame buffer itself
  85         int get_color_model();
  86         int hardware_scaling();
  87         unsigned char** get_row_pointers();
  88         int get_bytes_per_line();
  89         long get_shm_id();
  90         long get_shm_size();
  91 // Offset of current ringbuffer in shared memory
  92         long get_shm_offset();
  93 // Returns plane offset + ringbuffer offset
  94         long get_y_shm_offset();
  95         long get_u_shm_offset();
  96         long get_v_shm_offset();
  97 // Returns just the plane offset
  98         long get_y_offset();
  99         long get_u_offset();
 100         long get_v_offset();
 101
 102 // Rewing ringbuffer to the previous frame
 103         void rewind_ringbuffer();
 104         int set_bg_color(int color);
 105         int invert();
 106
 107 private:
 108         int initialize(BC_WindowBase *parent_window, int w, int h, int color_model, int use_shm);
 109         int allocate_data();
 110         int delete_data();
 111         int get_default_depth();
 112         char byte_bitswap(char src);
 113
 114         int ring_buffers, current_ringbuffer;
 115         int w, h;
 116 // Color model from colormodels.h
 117         int color_model;
 118 // Background color for using pngs
 119         int bg_color;
 120 // Override top_level for small bitmaps
 121         int use_shm;
 122         BC_WindowBase *top_level;
 123         BC_WindowBase *parent_window;
 124 // Points directly to the frame buffer
 125         unsigned char *data[BITMAP_RING];
 126 // Row pointers to the frame buffer
 127         unsigned char **row_data[BITMAP_RING];
 128         int xv_portid;
 129 // This differs from the depth parameter of top_level
 130         int bits_per_pixel;
 131 // From the ximage
 132         long bytes_per_line;
 133 // For resetting XVideo
 134         int last_pixmap_used;
 135 // Background color
 136         unsigned char bg_r, bg_g, bg_b;
 137 // For less than 8 bit depths
 138         int bit_counter;
 139
 140 // X11 objects
 141 // Need last pixmap to stop XVideo
 142         Drawable last_pixmap;
 143         XImage *ximage[BITMAP_RING];
 144         XvImage *xv_image[BITMAP_RING];
 145         XShmSegmentInfo shm_info;
 146 };
 147
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 153
 154 #endif