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|
/*
* SoftPC Revision 3.0
*
* Title : Win32 mungeing routines.
*
* Description : This module contains the functions required to produce
* destination compatible pixel patterns from SoftPC video
* memory.
*
* Author : Jerry Sexton (based on X_munge.c)
*
* Notes :
*
*/
#include <windows.h>
#include "insignia.h"
#include "host_def.h"
#include "xt.h"
#include "gvi.h"
#include "gmi.h"
#include "gfx_upd.h"
#include "egagraph.h"
#include <conapi.h>
#include "nt_graph.h"
/*(
========================= ega_colour_hi_munge =============================
PURPOSE: Munge interleaved EGA plane data to bitmap form using lookup tables.
INPUT: (unsigned char *) plane0_ptr - ptr to plane0 data
(int) width - # of groups of 4 bytes on the line
(unsigned int *) dest_ptr - ptr to output buffer
(unsigned int *) lut0_ptr - munging luts
(int) height - # of scanlines to output (1 or 2)
(int) line_offset - distance to next scanline
OUTPUT: A nice bitmap in dest_ptr
===========================================================================
)*/
GLOBAL VOID
ega_colour_hi_munge(unsigned char *plane0_ptr, int width,
unsigned int *dest_ptr, unsigned int *lut0_ptr,
int height, int line_offset)
{
unsigned int *lut1_ptr = lut0_ptr + LUT_OFFSET;
unsigned int *lut2_ptr = lut1_ptr + LUT_OFFSET;
unsigned int *lut3_ptr = lut2_ptr + LUT_OFFSET;
FAST unsigned int hi_res;
FAST unsigned int lo_res;
FAST unsigned int *l_ptr;
FAST half_word *data;
/* make sure we get the line offset in ints not bytes */
line_offset /= sizeof(int);
data = (half_word *) plane0_ptr;
/* convert each input byte in turn */
if (get_plane_mask() == 0xf) /* all planes enabled */
{
for ( ; width > 0; width--)
{
/* Get 8 bytes (2 longs) of output data from 1 byte of plane 0
** data
*/
l_ptr = &lut0_ptr [*data++ << 1];
hi_res = *l_ptr++;
lo_res = *l_ptr;
/* Or in the output data from plane 1 */
l_ptr = &lut1_ptr [*data++ << 1];
hi_res |= *l_ptr++;
lo_res |= *l_ptr;
/* Or in the output data from plane 2 */
l_ptr = &lut2_ptr [*data++ << 1];
hi_res |= *l_ptr++;
lo_res |= *l_ptr;
/* Or in the output data from plane 3 */
l_ptr = &lut3_ptr [*data++ << 1];
hi_res |= *l_ptr++;
lo_res |= *l_ptr;
/* Output the data to the buffer */
if (height == 2)
{
/* scanline doubling */
*(dest_ptr + line_offset) = hi_res;
*dest_ptr++ = hi_res;
*(dest_ptr + line_offset) = lo_res;
*dest_ptr++ = lo_res;
}
else
{
/* not scanline doubling */
*dest_ptr++ = hi_res;
*dest_ptr++ = lo_res;
}
}
}
else
{
for ( ; width > 0; width--)
{
/* Get 8 bytes (2 longs) of output data from 1 byte of plane 0
** data
*/
if (get_plane_mask() & 1)
{
l_ptr = &lut0_ptr [*data++ << 1];
hi_res = *l_ptr++;
lo_res = *l_ptr;
}
else
{
hi_res = 0;
lo_res = 0;
data++;
}
/* Conditionally Or in the output data from plane 1 */
if (get_plane_mask() & 2)
{
l_ptr = &lut1_ptr [*data++ << 1];
hi_res |= *l_ptr++;
lo_res |= *l_ptr;
}
else
{
data++;
}
/* Conditionally Or in the output data from plane 2 */
if (get_plane_mask() & 4)
{
l_ptr = &lut2_ptr [*data++ << 1];
hi_res |= *l_ptr++;
lo_res |= *l_ptr;
}
else
{
data++;
}
/* Conditionally Or in the output data from plane 3 */
if (get_plane_mask() & 8)
{
l_ptr = &lut3_ptr [*data++ << 1];
hi_res |= *l_ptr++;
lo_res |= *l_ptr;
}
else
{
data++;
}
/* Output the data to the buffer */
if (height == 2)
{
/* scanline doubling */
*(dest_ptr + line_offset) = hi_res;
*dest_ptr++ = hi_res;
*(dest_ptr + line_offset) = lo_res;
*dest_ptr++ = lo_res;
}
else
{
/* not scanline doubling */
*dest_ptr++ = hi_res;
*dest_ptr++ = lo_res;
}
}
}
} /* ega_colour_hi_munge */
#ifdef BIGWIN
/*(
========================= ega_colour_hi_munge_big ===========================
PURPOSE: Munge interleaved EGA plane data to bitmap data for big windows.
INPUT: (unsigned char *) plane0_ptr - ptr to EGA plane 0 data
(int) width - number of bytes to convert
(unsigned int *) dest_ptr - output buffer ptr
(unsigned int *) lut0_ptr - ptr to luts
(int) height - # of scanlines to output (1 or 3)
(int) line_offset - distance to next scanline
OUTPUT: A nice bitmap in the output buffer
=============================================================================
)*/
GLOBAL VOID
ega_colour_hi_munge_big(unsigned char *plane0_ptr, int width,
unsigned int *dest_ptr, unsigned int *lut0_ptr,
int height, int line_offset)
{
unsigned int *lut1_ptr = lut0_ptr + BIG_LUT_OFFSET;
unsigned int *lut2_ptr = lut1_ptr + BIG_LUT_OFFSET;
unsigned int *lut3_ptr = lut2_ptr + BIG_LUT_OFFSET;
FAST unsigned int hi_res;
FAST unsigned int med_res;
FAST unsigned int lo_res;
FAST unsigned int *l_ptr;
FAST half_word *data;
/* make sure we get the line offset in ints not bytes */
line_offset /= sizeof(int);
data = (half_word *) plane0_ptr;
if (get_plane_mask() == 0xf)
{
for ( ; width > 0; width--)
{
/* From one byte of input data in plane 0, get 12 bytes
** of output data.
*/
l_ptr = &lut0_ptr [*data++ * 3];
hi_res = *l_ptr++;
med_res = *l_ptr++;
lo_res = *l_ptr;
/* Or in the stuff from plane 1 */
l_ptr = &lut1_ptr [*data++ * 3];
hi_res |= *l_ptr++;
med_res |= *l_ptr++;
lo_res |= *l_ptr;
/* Or in the stuff from plane 2 */
l_ptr = &lut2_ptr [*data++ * 3];
hi_res |= *l_ptr++;
med_res |= *l_ptr++;
lo_res |= *l_ptr;
/* Or in the stuff from plane 3 */
l_ptr = &lut3_ptr [*data++ * 3];
hi_res |= *l_ptr++;
med_res |= *l_ptr++;
lo_res |= *l_ptr;
/* Output the munged data */
if (height == 3)
{
/* triple the scanlines */
*(dest_ptr + 2*line_offset) = hi_res;
*(dest_ptr + line_offset) = hi_res;
*dest_ptr++ = hi_res;
*(dest_ptr + 2*line_offset) = med_res;
*(dest_ptr + line_offset) = med_res;
*dest_ptr++ = med_res;
*(dest_ptr + 2*line_offset) = lo_res;
*(dest_ptr + line_offset) = lo_res;
*dest_ptr++ = lo_res;
}
else
{
/* just one scanline */
*dest_ptr++ = hi_res;
*dest_ptr++ = med_res;
*dest_ptr++ = lo_res;
}
}
}
else
{
for ( ; width > 0; width--)
{
/* From one byte of input data in plane 0, get 12 bytes
** of output data.
*/
if (get_plane_mask() & 1)
{
l_ptr = &lut0_ptr [*data++ * 3];
hi_res = *l_ptr++;
med_res = *l_ptr++;
lo_res = *l_ptr;
}
else
{
data++;
hi_res = 0;
med_res = 0;
lo_res = 0;
}
/* Or in the stuff from plane 1 */
if (get_plane_mask() & 2)
{
l_ptr = &lut1_ptr [*data++ * 3];
hi_res |= *l_ptr++;
med_res |= *l_ptr++;
lo_res |= *l_ptr;
}
else
{
data++;
}
/* Or in the stuff from plane 2 */
if (get_plane_mask() & 4)
{
l_ptr = &lut2_ptr [*data++ * 3];
hi_res |= *l_ptr++;
med_res |= *l_ptr++;
lo_res |= *l_ptr;
}
else
{
data++;
}
/* Or in the stuff from plane 3 */
if (get_plane_mask() & 8)
{
l_ptr = &lut3_ptr [*data++ * 3];
hi_res |= *l_ptr++;
med_res |= *l_ptr++;
lo_res |= *l_ptr;
}
else
{
data++;
}
/* Output the munged data */
if (height == 3)
{
/* triple the scanlines */
*(dest_ptr + 2*line_offset) = hi_res;
*(dest_ptr + line_offset) = hi_res;
*dest_ptr++ = hi_res;
*(dest_ptr + 2*line_offset) = med_res;
*(dest_ptr + line_offset) = med_res;
*dest_ptr++ = med_res;
*(dest_ptr + 2*line_offset) = lo_res;
*(dest_ptr + line_offset) = lo_res;
*dest_ptr++ = lo_res;
}
else
{
/* just one scanline */
*dest_ptr++ = hi_res;
*dest_ptr++ = med_res;
*dest_ptr++ = lo_res;
}
}
}
} /* ega_colour_hi_munge_big */
/*(
========================= ega_colour_hi_munge_huge ========================
PURPOSE: Munge interleaved EGA plane data to bitmap form using lookup tables.
INPUT: (unsigned char *) plane0_ptr - ptr to plane0 data
(int) width - # of bytes on the line
(unsigned int *) dest_ptr - ptr to output buffer
(unsigned int *) lut0_ptr - munging luts
(int) height - # of scanlines to output (1 or 2)
(int) line_offset - distance to next scanline
OUTPUT: A nice X image in dest_ptr
===========================================================================
)*/
GLOBAL VOID
ega_colour_hi_munge_huge(unsigned char *plane0_ptr, int width,
unsigned int *dest_ptr, unsigned int *lut0_ptr,
int height, int line_offset)
{
unsigned int *lut1_ptr = lut0_ptr + HUGE_LUT_OFFSET;
unsigned int *lut2_ptr = lut1_ptr + HUGE_LUT_OFFSET;
unsigned int *lut3_ptr = lut2_ptr + HUGE_LUT_OFFSET;
FAST unsigned int res4;
FAST unsigned int res3;
FAST unsigned int res2;
FAST unsigned int res1;
FAST unsigned int *l_ptr;
FAST half_word *data;
/* make sure we get the line offset in ints not bytes */
line_offset /= sizeof(int);
data = (half_word *) plane0_ptr;
/* convert each input byte in turn */
if (get_plane_mask() == 0xf)
{
for ( ; width > 0; width--)
{
/* Get 16 bytes of output data from 1 byte of plane 0
** data
*/
l_ptr = &lut0_ptr [*data++ << 2];
res4 = *l_ptr++;
res3 = *l_ptr++;
res2 = *l_ptr++;
res1 = *l_ptr;
/* Or in the output data from plane 1 */
l_ptr = &lut1_ptr [*data++ << 2];
res4 |= *l_ptr++;
res3 |= *l_ptr++;
res2 |= *l_ptr++;
res1 |= *l_ptr;
/* Or in the output data from plane 2 */
l_ptr = &lut2_ptr [*data++ << 2];
res4 |= *l_ptr++;
res3 |= *l_ptr++;
res2 |= *l_ptr++;
res1 |= *l_ptr;
/* Or in the output data from plane 3 */
l_ptr = &lut3_ptr [*data++ << 2];
res4 |= *l_ptr++;
res3 |= *l_ptr++;
res2 |= *l_ptr++;
res1 |= *l_ptr;
/* Output the data to the buffer */
if (height == 4)
{
/* scanline doubling */
*(dest_ptr + 3*line_offset) = res4;
*(dest_ptr + 2*line_offset) = res4;
*(dest_ptr + line_offset) = res4;
*dest_ptr++ = res4;
*(dest_ptr + 3*line_offset) = res3;
*(dest_ptr + 2*line_offset) = res3;
*(dest_ptr + line_offset) = res3;
*dest_ptr++ = res3;
*(dest_ptr + 3*line_offset) = res2;
*(dest_ptr + 2*line_offset) = res2;
*(dest_ptr + line_offset) = res2;
*dest_ptr++ = res2;
*(dest_ptr + 3*line_offset) = res1;
*(dest_ptr + 2*line_offset) = res1;
*(dest_ptr + line_offset) = res1;
*dest_ptr++ = res1;
}
else
{
/* not scanline doubling */
*dest_ptr++ = res4;
*dest_ptr++ = res3;
*dest_ptr++ = res2;
*dest_ptr++ = res1;
}
}
}
else
{
for ( ; width > 0; width--)
{
/* Get 16 bytes of output data from 1 byte of plane 0
** data
*/
if (get_plane_mask() & 1)
{
l_ptr = &lut0_ptr [*data++ << 2];
res4 = *l_ptr++;
res3 = *l_ptr++;
res2 = *l_ptr++;
res1 = *l_ptr;
}
else
{
res4 = 0;
res3 = 0;
res2 = 0;
res1 = 0;
data++;
}
/* Or in the output data from plane 1 */
if (get_plane_mask() & 2)
{
l_ptr = &lut1_ptr [*data++ << 2];
res4 |= *l_ptr++;
res3 |= *l_ptr++;
res2 |= *l_ptr++;
res1 |= *l_ptr;
}
else
{
data++;
}
/* Or in the output data from plane 2 */
if (get_plane_mask() & 4)
{
l_ptr = &lut2_ptr [*data++ << 2];
res4 |= *l_ptr++;
res3 |= *l_ptr++;
res2 |= *l_ptr++;
res1 |= *l_ptr;
}
else
{
data++;
}
/* Or in the output data from plane 3 */
if (get_plane_mask() & 8)
{
l_ptr = &lut3_ptr [*data++ << 2];
res4 |= *l_ptr++;
res3 |= *l_ptr++;
res2 |= *l_ptr++;
res1 |= *l_ptr;
}
else
{
data++;
}
/* Output the data to the buffer */
if (height == 4)
{
/* scanline doubling */
*(dest_ptr + 3*line_offset) = res4;
*(dest_ptr + 2*line_offset) = res4;
*(dest_ptr + line_offset) = res4;
*dest_ptr++ = res4;
*(dest_ptr + 3*line_offset) = res3;
*(dest_ptr + 2*line_offset) = res3;
*(dest_ptr + line_offset) = res3;
*dest_ptr++ = res3;
*(dest_ptr + 3*line_offset) = res2;
*(dest_ptr + 2*line_offset) = res2;
*(dest_ptr + line_offset) = res2;
*dest_ptr++ = res2;
*(dest_ptr + 3*line_offset) = res1;
*(dest_ptr + 2*line_offset) = res1;
*(dest_ptr + line_offset) = res1;
*dest_ptr++ = res1;
}
else
{
/* not scanline doubling */
*dest_ptr++ = res4;
*dest_ptr++ = res3;
*dest_ptr++ = res2;
*dest_ptr++ = res1;
}
}
}
} /* ega_colour_hi_munge_huge */
#endif /* BIGWIN */
|
