git.oblomov.eu Git - linux-2.6/blob - Documentation/video4linux/cx2341x/fw-osd-api.txt

   1 OSD firmware API description
   2 ============================
   3
   4 Note: this API is part of the decoder firmware, so it's cx23415 only.
   5
   6 -------------------------------------------------------------------------------
   7
   8 Name    CX2341X_OSD_GET_FRAMEBUFFER
   9 Enum    65/0x41
  10 Description
  11         Return base and length of contiguous OSD memory.
  12 Result[0]
  13         OSD base address
  14 Result[1]
  15         OSD length
  16
  17 -------------------------------------------------------------------------------
  18
  19 Name    CX2341X_OSD_GET_PIXEL_FORMAT
  20 Enum    66/0x42
  21 Description
  22         Query OSD format
  23 Result[0]
  24         0=8bit index
  25         1=16bit RGB 5:6:5
  26         2=16bit ARGB 1:5:5:5
  27         3=16bit ARGB 1:4:4:4
  28         4=32bit ARGB 8:8:8:8
  29
  30 -------------------------------------------------------------------------------
  31
  32 Name    CX2341X_OSD_SET_PIXEL_FORMAT
  33 Enum    67/0x43
  34 Description
  35         Assign pixel format
  36 Param[0]
  37         0=8bit index
  38         1=16bit RGB 5:6:5
  39         2=16bit ARGB 1:5:5:5
  40         3=16bit ARGB 1:4:4:4
  41         4=32bit ARGB 8:8:8:8
  42
  43 -------------------------------------------------------------------------------
  44
  45 Name    CX2341X_OSD_GET_STATE
  46 Enum    68/0x44
  47 Description
  48         Query OSD state
  49 Result[0]
  50         Bit  0   0=off, 1=on
  51         Bits 1:2 alpha control
  52         Bits 3:5 pixel format
  53
  54 -------------------------------------------------------------------------------
  55
  56 Name    CX2341X_OSD_SET_STATE
  57 Enum    69/0x45
  58 Description
  59         OSD switch
  60 Param[0]
  61         0=off, 1=on
  62
  63 -------------------------------------------------------------------------------
  64
  65 Name    CX2341X_OSD_GET_OSD_COORDS
  66 Enum    70/0x46
  67 Description
  68         Retrieve coordinates of OSD area blended with video
  69 Result[0]
  70         OSD buffer address
  71 Result[1]
  72         Stride in pixels
  73 Result[2]
  74         Lines in OSD buffer
  75 Result[3]
  76         Horizontal offset in buffer
  77 Result[4]
  78         Vertical offset in buffer
  79
  80 -------------------------------------------------------------------------------
  81
  82 Name    CX2341X_OSD_SET_OSD_COORDS
  83 Enum    71/0x47
  84 Description
  85         Assign the coordinates of the OSD area to blend with video
  86 Param[0]
  87         buffer address
  88 Param[1]
  89         buffer stride in pixels
  90 Param[2]
  91         lines in buffer
  92 Param[3]
  93         horizontal offset
  94 Param[4]
  95         vertical offset
  96
  97 -------------------------------------------------------------------------------
  98
  99 Name    CX2341X_OSD_GET_SCREEN_COORDS
 100 Enum    72/0x48
 101 Description
 102         Retrieve OSD screen area coordinates
 103 Result[0]
 104         top left horizontal offset
 105 Result[1]
 106         top left vertical offset
 107 Result[2]
 108         bottom right horizontal offset
 109 Result[3]
 110         bottom right vertical offset
 111
 112 -------------------------------------------------------------------------------
 113
 114 Name    CX2341X_OSD_SET_SCREEN_COORDS
 115 Enum    73/0x49
 116 Description
 117         Assign the coordinates of the screen area to blend with video
 118 Param[0]
 119         top left horizontal offset
 120 Param[1]
 121         top left vertical offset
 122 Param[2]
 123         bottom left horizontal offset
 124 Param[3]
 125         bottom left vertical offset
 126
 127 -------------------------------------------------------------------------------
 128
 129 Name    CX2341X_OSD_GET_GLOBAL_ALPHA
 130 Enum    74/0x4A
 131 Description
 132         Retrieve OSD global alpha
 133 Result[0]
 134         global alpha: 0=off, 1=on
 135 Result[1]
 136         bits 0:7 global alpha
 137
 138 -------------------------------------------------------------------------------
 139
 140 Name    CX2341X_OSD_SET_GLOBAL_ALPHA
 141 Enum    75/0x4B
 142 Description
 143         Update global alpha
 144 Param[0]
 145         global alpha: 0=off, 1=on
 146 Param[1]
 147         global alpha (8 bits)
 148 Param[2]
 149         local alpha: 0=on, 1=off
 150
 151 -------------------------------------------------------------------------------
 152
 153 Name    CX2341X_OSD_SET_BLEND_COORDS
 154 Enum    78/0x4C
 155 Description
 156         Move start of blending area within display buffer
 157 Param[0]
 158         horizontal offset in buffer
 159 Param[1]
 160         vertical offset in buffer
 161
 162 -------------------------------------------------------------------------------
 163
 164 Name    CX2341X_OSD_GET_FLICKER_STATE
 165 Enum    79/0x4F
 166 Description
 167         Retrieve flicker reduction module state
 168 Result[0]
 169         flicker state: 0=off, 1=on
 170
 171 -------------------------------------------------------------------------------
 172
 173 Name    CX2341X_OSD_SET_FLICKER_STATE
 174 Enum    80/0x50
 175 Description
 176         Set flicker reduction module state
 177 Param[0]
 178         State: 0=off, 1=on
 179
 180 -------------------------------------------------------------------------------
 181
 182 Name    CX2341X_OSD_BLT_COPY
 183 Enum    82/0x52
 184 Description
 185         BLT copy
 186 Param[0]
 187 '0000'  zero
 188 '0001' ~destination AND ~source
 189 '0010' ~destination AND  source
 190 '0011' ~destination
 191 '0100'  destination AND ~source
 192 '0101'                  ~source
 193 '0110'  destination XOR  source
 194 '0111' ~destination OR  ~source
 195 '1000' ~destination AND ~source
 196 '1001'  destination XNOR source
 197 '1010'                   source
 198 '1011' ~destination OR   source
 199 '1100'  destination
 200 '1101'  destination OR  ~source
 201 '1110'  destination OR   source
 202 '1111'  one
 203
 204 Param[1]
 205         Resulting alpha blending
 206             '01' source_alpha
 207             '10' destination_alpha
 208             '11' source_alpha*destination_alpha+1
 209                  (zero if both source and destination alpha are zero)
 210 Param[2]
 211         '00' output_pixel = source_pixel
 212
 213         '01' if source_alpha=0:
 214                  output_pixel = destination_pixel
 215              if 256 > source_alpha > 1:
 216                  output_pixel = ((source_alpha + 1)*source_pixel +
 217                                  (255 - source_alpha)*destination_pixel)/256
 218
 219         '10' if destination_alpha=0:
 220                  output_pixel = source_pixel
 221               if 255 > destination_alpha > 0:
 222                  output_pixel = ((255 - destination_alpha)*source_pixel +
 223                                  (destination_alpha + 1)*destination_pixel)/256
 224
 225         '11' if source_alpha=0:
 226                  source_temp = 0
 227              if source_alpha=255:
 228                  source_temp = source_pixel*256
 229              if 255 > source_alpha > 0:
 230                  source_temp = source_pixel*(source_alpha + 1)
 231              if destination_alpha=0:
 232                  destination_temp = 0
 233              if destination_alpha=255:
 234                  destination_temp = destination_pixel*256
 235              if 255 > destination_alpha > 0:
 236                  destination_temp = destination_pixel*(destination_alpha + 1)
 237              output_pixel = (source_temp + destination_temp)/256
 238 Param[3]
 239         width
 240 Param[4]
 241         height
 242 Param[5]
 243         destination pixel mask
 244 Param[6]
 245         destination rectangle start address
 246 Param[7]
 247         destination stride in dwords
 248 Param[8]
 249         source stride in dwords
 250 Param[9]
 251         source rectangle start address
 252
 253 -------------------------------------------------------------------------------
 254
 255 Name    CX2341X_OSD_BLT_FILL
 256 Enum    83/0x53
 257 Description
 258         BLT fill color
 259 Param[0]
 260         Same as Param[0] on API 0x52
 261 Param[1]
 262         Same as Param[1] on API 0x52
 263 Param[2]
 264         Same as Param[2] on API 0x52
 265 Param[3]
 266         width
 267 Param[4]
 268         height
 269 Param[5]
 270         destination pixel mask
 271 Param[6]
 272         destination rectangle start address
 273 Param[7]
 274         destination stride in dwords
 275 Param[8]
 276         color fill value
 277
 278 -------------------------------------------------------------------------------
 279
 280 Name    CX2341X_OSD_BLT_TEXT
 281 Enum    84/0x54
 282 Description
 283         BLT for 8 bit alpha text source
 284 Param[0]
 285         Same as Param[0] on API 0x52
 286 Param[1]
 287         Same as Param[1] on API 0x52
 288 Param[2]
 289         Same as Param[2] on API 0x52
 290 Param[3]
 291         width
 292 Param[4]
 293         height
 294 Param[5]
 295         destination pixel mask
 296 Param[6]
 297         destination rectangle start address
 298 Param[7]
 299         destination stride in dwords
 300 Param[8]
 301         source stride in dwords
 302 Param[9]
 303         source rectangle start address
 304 Param[10]
 305         color fill value
 306
 307 -------------------------------------------------------------------------------
 308
 309 Name    CX2341X_OSD_SET_FRAMEBUFFER_WINDOW
 310 Enum    86/0x56
 311 Description
 312         Positions the main output window on the screen. The coordinates must be
 313         such that the entire window fits on the screen.
 314 Param[0]
 315         window width
 316 Param[1]
 317         window height
 318 Param[2]
 319         top left window corner horizontal offset
 320 Param[3]
 321         top left window corner vertical offset
 322
 323 -------------------------------------------------------------------------------
 324
 325 Name    CX2341X_OSD_SET_CHROMA_KEY
 326 Enum    96/0x60
 327 Description
 328         Chroma key switch and color
 329 Param[0]
 330         state: 0=off, 1=on
 331 Param[1]
 332         color
 333
 334 -------------------------------------------------------------------------------
 335
 336 Name    CX2341X_OSD_GET_ALPHA_CONTENT_INDEX
 337 Enum    97/0x61
 338 Description
 339         Retrieve alpha content index
 340 Result[0]
 341         alpha content index, Range 0:15
 342
 343 -------------------------------------------------------------------------------
 344
 345 Name    CX2341X_OSD_SET_ALPHA_CONTENT_INDEX
 346 Enum    98/0x62
 347 Description
 348         Assign alpha content index
 349 Param[0]
 350         alpha content index, range 0:15