mirror of
https://github.com/RaySollium99/picodrive.git
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141 lines
2.9 KiB
C
141 lines
2.9 KiB
C
/*
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* PicoDrive
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* (C) notaz, 2006,2009
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*
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* This work is licensed under the terms of MAME license.
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* See COPYING file in the top-level directory.
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*/
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#include <string.h>
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// Convert 0000bbb0 ggg0rrr0 0000bbb0 ggg0rrr0
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// to 00000000 rrr00000 ggg00000 bbb00000 ...
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// TODO: rm when gp2x/emu.c is no longer used
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void bgr444_to_rgb32(void *to, void *from, unsigned entries)
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{
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unsigned short *ps = from;
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unsigned int *pd = to;
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int pixels;
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for (pixels = entries; pixels; pixels--, ps++, pd++)
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{
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*pd = ((*ps<<20)&0xe00000) | ((*ps<<8)&0xe000) | ((*ps>>4)&0xe0);
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*pd |= *pd >> 3;
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}
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}
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void bgr444_to_rgb32_sh(void *to, void *from)
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{
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unsigned short *ps = from;
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unsigned int *pd = to;
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int pixels;
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pd += 0x40;
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for (pixels = 0x40; pixels; pixels--, ps++, pd++)
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{
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*pd = ((*ps<<20)&0xe00000) | ((*ps<<8)&0xe000) | ((*ps>>4)&0xe0);
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*pd >>= 1;
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*pd |= *pd >> 3;
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pd[0x40*2] = *pd;
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}
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ps -= 0x40;
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for (pixels = 0x40; pixels; pixels--, ps++, pd++)
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{
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*pd = ((*ps<<20)&0xe00000) | ((*ps<<8)&0xe000) | ((*ps>>4)&0xe0);
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continue;
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*pd += 0x00404040;
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if (*pd & 0x01000000) *pd |= 0x00e00000;
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if (*pd & 0x00010000) *pd |= 0x0000e000;
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if (*pd & 0x00000100) *pd |= 0x000000e0;
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*pd &= 0x00e0e0e0;
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*pd |= *pd >> 3;
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}
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}
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#define X (x_y >> 16)
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#define Y (x_y & 0xffff)
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#define W (w_h >> 16)
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#define H (w_h & 0xffff)
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// gp2x: 0-> X wiz: Y <-0
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// | |
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// v v
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//
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// Y X
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void vidcpy_8bit(void *dest, void *src, int x_y, int w_h)
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{
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unsigned char *pd = dest, *ps = src;
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int i;
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pd += X + Y*320;
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ps += X + Y*328 + 8;
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for (i = 0; i < H; i++) {
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memcpy(pd, ps, W);
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ps += 328; pd += 320;
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}
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}
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void vidcpy_8bit_rot(void *dest, void *src, int x_y, int w_h)
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{
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unsigned char *pd = dest, *ps = src;
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int i, u;
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pd += Y + (319-X)*240;
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ps += X + Y*328 + 8;
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for (i = 0; i < H; i += 4) {
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unsigned char *p = (void *)ps;
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unsigned int *q = (void *)pd;
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for (u = 0; u < W; u++) {
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*q = (p[3*328]<<24) + (p[2*328]<<16) + (p[1*328]<<8) + p[0*328];
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p += 1;
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q -= 240/4;
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}
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ps += 4*328; pd += 4;
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}
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}
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void rotated_blit8 (void *dst, void *linesx4, int y, int is_32col)
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{
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unsigned char *pd = dst, *ps = linesx4;
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int x, w, u;
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x = (is_32col ? 32 : 0);
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w = (is_32col ? 256 : 320);
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y -= 4;
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pd += y + (319-x)*240;
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ps += x;
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unsigned char *p = (void *)ps;
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unsigned int *q = (void *)pd;
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for (u = 0; u < w; u++) {
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*q = (p[3*328]<<24) + (p[2*328]<<16) + (p[1*328]<<8) + p[0*328];
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p += 1;
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q -= 240/4;
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}
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}
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void rotated_blit16(void *dst, void *linesx4, int y, int is_32col)
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{
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unsigned short *pd = dst, *ps = linesx4;
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int x, w, u;
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x = (is_32col ? 32 : 0);
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w = (is_32col ? 256 : 320);
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y -= 4;
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pd += y + (319-x)*240;
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ps += x;
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unsigned short *p = (void *)ps;
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unsigned int *q = (void *)pd;
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for (u = 0; u < w; u++) {
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q[0] = (p[1*328]<<16) + p[0*328];
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q[1] = (p[3*328]<<16) + p[2*328];
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p += 1;
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q -= 2*240/4;
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}
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}
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