* Writes to the driver's file while in component colour modes\r
* must correspond to a change of the contents of the screen. The framebuffer\r
* must start at offset 0 in the file.\r
- * In pallete colour modes the LFB is preceded by a 1024 byte pallete (allowing\r
- * room for 256 entries of 32-bits each)\r
* Reading from the screen must either return zero, or read from the\r
* framebuffer.\r
* \r
*/\r
VIDEO_IOCTL_REQLFB\r
};\r
+#define DRV_VIDEO_IOCTLNAMES "getset_mode", "find+mode", "mode_info", "set_buf_format", "set_cursor", "request_framebuffer"\r
\r
/**\r
* \brief Mode Structure used in IOCtl Calls\r
*/\r
enum eTplVideo_BufFormats\r
{\r
+ /**\r
+ * \brief Text Mode\r
+ * \r
+ * The device file presents itself as an array of ::tVT_Char\r
+ * each describing a character cell on the screen.\r
+ * These cells are each \a giVT_CharWidth pixels wide and\r
+ * \a giVT_CharHeight high.\r
+ */\r
VIDEO_BUFFMT_TEXT,\r
+ /**\r
+ * \brief Framebuffer Mode\r
+ * \r
+ * The device file presents as an array of 32-bpp pixels describing\r
+ * the entire screen. The format of a single pixel is in xRGB format\r
+ * (top 8 bits ignored, next 8 bits red, next 8 bits green and\r
+ * the bottom 8 bits blue)\r
+ */\r
VIDEO_BUFFMT_FRAMEBUFFER,\r
+ /**\r
+ * \brief 2D Accelerated Mode\r
+ * \r
+ * The device file acts as a character device, accepting a stream of\r
+ * commands described in eTplVideo_2DCommands when written to.\r
+ */\r
+ VIDEO_BUFFMT_2DSTREAM,\r
+ /**\r
+ * \brief 3D Accelerated Mode\r
+ * \r
+ * The device file acts as a character device, accepting a stream of\r
+ * commands described in eTplVideo_3DCommands when written to.\r
+ */\r
VIDEO_BUFFMT_3DSTREAM\r
};\r
\r
+/**\r
+ * \brief 2D Accellerated Video Commands\r
+ * \r
+ * Commands passed in the command stream for ::VIDEO_BUFFMT_2DSTREAM\r
+ */\r
+enum eTplVideo_2DCommands\r
+{\r
+ /**\r
+ * \brief No Operation\r
+ */\r
+ VIDEO_2DOP_NOP,\r
+ /**\r
+ * \brief Fill a region\r
+ * \param X Uint16 - Leftmost pixels of the region\r
+ * \param Y Uint16 - Topmost pixels of the region\r
+ * \param W Uint16 - Width of the region\r
+ * \param H Uint16 - Height of the region\r
+ * \param Colour Uint32 - Value to fill with\r
+ */\r
+ VIDEO_2DOP_FILL,\r
+ /**\r
+ * \brief Copy a region from one part of the framebuffer to another\r
+ * \param DestX Uint16 - Leftmost pixels of the destination\r
+ * \param DestY Uint16 - Topmost pixels of the destination\r
+ * \param SrcX Uint16 - Leftmost pixels of the source\r
+ * \param SrcY Uint16 - Topmost pixels of the source\r
+ * \param Width Uint16 - Width of the region\r
+ * \param Height Uint16 - Height of the region\r
+ */\r
+ VIDEO_2DOP_BLIT,\r
+\r
+\r
+ /**\r
+ * \brief Copy a region from video memory to the framebuffer\r
+ */\r
+ VIDEO_2DOP_BLITBUF,\r
+\r
+ /**\r
+ * \brief Copy and scale a region from video memory to the framebuffer\r
+ */\r
+ VIDEO_2DOP_BLITSCALEBUF,\r
+\r
+ NUM_VIDEO_2DOPS\r
+};\r
+\r
/**\r
* \brief Describes a position in the video framebuffer\r
*/\r
//! \brief Defines the height of a rendered character\r
extern int giVT_CharHeight;\r
/**\r
- * \fn void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC)\r
* \brief Driver helper that renders a character to a buffer\r
* \param Codepoint Unicode character to render\r
- * \param Buffer Buffer to render to (32-bpp)\r
- * \param Pitch Number of DWords per line\r
+ * \param Buffer Buffer to render to\r
+ * \param Depth Bit depth of the destination buffer\r
+ * \param Pitch Number of bytes per line\r
* \param BGC 32-bit Background Colour\r
* \param FGC 32-bit Foreground Colour\r
* \r
* text mode by keeping the character rendering abstracted from the driver,\r
* easing the driver development and reducing code duplication.\r
*/\r
-extern void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Pitch, Uint32 BGC, Uint32 FGC);\r
+extern void VT_Font_Render(Uint32 Codepoint, void *Buffer, int Depth, int Pitch, Uint32 BGC, Uint32 FGC);\r
/**\r
* \fn Uint32 VT_Colour12to24(Uint16 Col12)\r
- * \brief Converts a colour from 12bpp to 32bpp\r
+ * \brief Converts a colour from 12bpp to 24bpp\r
* \param Col12 12-bpp input colour\r
* \return Expanded 32-bpp (24-bit colour) version of \a Col12\r
*/\r
extern Uint32 VT_Colour12to24(Uint16 Col12);\r
+/**\r
+ * \brief Converts a colour from 12bpp to 14bpp\r
+ * \param Col12 12-bpp input colour\r
+ * \return 15 bits per pixel value\r
+ */\r
+extern Uint16 VT_Colour12to15(Uint16 Col12);\r
+/**\r
+ * \brief Converts a colour from 12bpp to 32bpp\r
+ * \param Col12 12-bpp input colour\r
+ * \param Depth Desired bit depth\r
+ * \return \a Depth bit number, denoting Col12\r
+ * \r
+ * Expands the source colour into a \a Depth bits per pixel representation.\r
+ * The colours are expanded with preference to Green, Blue and Red in that order\r
+ * (so, green gets the first spare pixel, blue gets the next, and red never gets\r
+ * the spare). \n\r
+ * The final bit of each component is used to fill the lower bits of the output.\r
+ */\r
+extern Uint32 VT_Colour12toN(Uint16 Col12, int Depth);\r
+\r
+/**\r
+ * \brief Handlers for eTplVideo_2DCommands\r
+ */\r
+typedef struct sDrvUtil_Video_2DHandlers\r
+{\r
+ /**\r
+ * \brief No Operation, Ignored\r
+ * \see VIDEO_2DOP_NOP\r
+ */\r
+ void *Nop;\r
+ /**\r
+ * \brief Fill a buffer region\r
+ * \param X Lefthand edge\r
+ * \param Y Top edge\r
+ * \param W Width\r
+ * \param H Height\r
+ * \param Colour Colour to fill with\r
+ * \see VIDEO_2DOP_FILL\r
+ */\r
+ void (*Fill)(void *Ent, Uint16 X, Uint16 Y, Uint16 W, Uint16 H, Uint32 Colour);\r
+ /**\r
+ * \brief Fill a buffer region\r
+ * \param DestX Lefthand edge of destination\r
+ * \param DestY Top edge of destination\r
+ * \param SrcX Lefthand edge of source\r
+ * \param SrcY Top edge of source\r
+ * \param W Width\r
+ * \param H Height\r
+ * \see VIDEO_2DOP_BLIT\r
+ */\r
+ void (*Blit)(void *Ent, Uint16 DestX, Uint16 DestY, Uint16 SrcX, Uint16 SrcY, Uint16 W, Uint16 H);\r
+} tDrvUtil_Video_2DHandlers;\r
+\r
+/**\r
+ * \brief Handle a 2D operation stream for a driver\r
+ * \param Ent Value to pass to handlers\r
+ * \param Buffer Stream buffer\r
+ * \param Length Length of stream\r
+ * \param Handlers Handlers to use for the stream\r
+ * \param SizeofHandlers Size of \a tDrvUtil_Video_2DHandlers according\r
+ * to the driver. Used as version control and error avoidence.\r
+ */\r
+extern Uint64 DrvUtil_Video_2DStream(void *Ent, void *Buffer, int Length,\r
+ tDrvUtil_Video_2DHandlers *Handlers, int SizeofHandlers);\r
\r
#endif\r
git.ucc.asn.au / tpg / acess2.git / blobdiff
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