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[/] [or1k/] [tags/] [MW_0_8_9PRE7/] [mw/] [src/] [drivers/] [fblin24.c] - Blame information for rev 1765

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/*
 * Copyright (c) 2000, 2001 Greg Haerr <greg@censoft.com>
 *
 * 24bpp Linear Video Driver for Microwindows
 */
/*#define NDEBUG*/
#include <assert.h>
#include <string.h>
#include "device.h"
#include "fb.h"
 
/* Calc linelen and mmap size, return 0 on fail*/
static int
linear24_init(PSD psd)
{
        if (!psd->size) {
                psd->size = psd->yres * psd->linelen;
                /* convert linelen from byte to pixel len for bpp 16, 24, 32*/
                psd->linelen /= 3;
        }
        return 1;
}
 
/* Set pixel at x, y, to pixelval c*/
static void
linear24_drawpixel(PSD psd, MWCOORD x, MWCOORD y, MWPIXELVAL c)
{
        ADDR8   addr = psd->addr;
        MWUCHAR r, g, b;
 
        assert (addr != 0);
        assert (x >= 0 && x < psd->xres);
        assert (y >= 0 && y < psd->yres);
        assert (c < psd->ncolors);
 
        r = PIXEL888RED(c);
        g = PIXEL888GREEN(c);
        b = PIXEL888BLUE(c);
        addr += (x + y * psd->linelen) * 3;
        DRAWON;
        if(gr_mode == MWMODE_COPY) {
                *addr++ = b;
                *addr++ = g;
                *addr = r;
        } else {
                applyOp(gr_mode, b, addr, ADDR8); ++addr;
                applyOp(gr_mode, g, addr, ADDR8); ++addr;
                applyOp(gr_mode, r, addr, ADDR8);
        }
        DRAWOFF;
}
 
/* Read pixel at x, y*/
static MWPIXELVAL
linear24_readpixel(PSD psd, MWCOORD x, MWCOORD y)
{
        ADDR8   addr = psd->addr;
 
        assert (addr != 0);
        assert (x >= 0 && x < psd->xres);
        assert (y >= 0 && y < psd->yres);
 
        addr += (x + y * psd->linelen) * 3;
        return RGB2PIXEL888(addr[2], addr[1], addr[0]);
}
 
/* Draw horizontal line from x1,y to x2,y including final point*/
static void
linear24_drawhorzline(PSD psd, MWCOORD x1, MWCOORD x2, MWCOORD y, MWPIXELVAL c)
{
        ADDR8   addr = psd->addr;
        MWUCHAR r, g, b;
 
        assert (addr != 0);
        assert (x1 >= 0 && x1 < psd->xres);
        assert (x2 >= 0 && x2 < psd->xres);
        assert (x2 >= x1);
        assert (y >= 0 && y < psd->yres);
        assert (c < psd->ncolors);
 
        r = PIXEL888RED(c);
        g = PIXEL888GREEN(c);
        b = PIXEL888BLUE(c);
        addr += (x1 + y * psd->linelen) * 3;
        DRAWON;
        if(gr_mode == MWMODE_COPY) {
                while(x1++ <= x2) {
                        *addr++ = b;
                        *addr++ = g;
                        *addr++ = r;
                }
        } else {
                while (x1++ <= x2) {
                        applyOp(gr_mode, b, addr, ADDR8); ++addr;
                        applyOp(gr_mode, g, addr, ADDR8); ++addr;
                        applyOp(gr_mode, r, addr, ADDR8); ++addr;
                }
        }
        DRAWOFF;
}
 
/* Draw a vertical line from x,y1 to x,y2 including final point*/
static void
linear24_drawvertline(PSD psd, MWCOORD x, MWCOORD y1, MWCOORD y2, MWPIXELVAL c)
{
        ADDR8   addr = psd->addr;
        int     linelen = psd->linelen * 3;
        MWUCHAR r, g, b;
 
        assert (addr != 0);
        assert (x >= 0 && x < psd->xres);
        assert (y1 >= 0 && y1 < psd->yres);
        assert (y2 >= 0 && y2 < psd->yres);
        assert (y2 >= y1);
        assert (c < psd->ncolors);
 
        r = PIXEL888RED(c);
        g = PIXEL888GREEN(c);
        b = PIXEL888BLUE(c);
        addr += (x + y1 * psd->linelen) * 3;
        DRAWON;
        if(gr_mode == MWMODE_COPY) {
                while(y1++ <= y2) {
                        addr[0] = b;
                        addr[1] = g;
                        addr[2] = r;
                        addr += linelen;
                }
        } else {
                while (y1++ <= y2) {
                        applyOp(gr_mode, b, &addr[0], ADDR8);
                        applyOp(gr_mode, g, &addr[1], ADDR8);
                        applyOp(gr_mode, r, &addr[2], ADDR8);
                        addr += linelen;
                }
        }
        DRAWOFF;
}
 
/* srccopy bitblt, opcode is currently ignored*/
static void
linear24_blit(PSD dstpsd, MWCOORD dstx, MWCOORD dsty, MWCOORD w, MWCOORD h,
        PSD srcpsd, MWCOORD srcx, MWCOORD srcy, long op)
{
        ADDR8   dst = dstpsd->addr;
        ADDR8   src = srcpsd->addr;
        int     i;
        int     dlinelen = dstpsd->linelen * 3;
        int     slinelen = srcpsd->linelen * 3;
        int     dlinelen_minus_w = (dstpsd->linelen - w) * 3;
        int     slinelen_minus_w = (srcpsd->linelen - w) * 3;
#if ALPHABLEND
        unsigned int alpha;
#endif
 
        assert (dst != 0);
        assert (dstx >= 0 && dstx < dstpsd->xres);
        assert (dsty >= 0 && dsty < dstpsd->yres);
        assert (w > 0);
        assert (h > 0);
        assert (src != 0);
        assert (srcx >= 0 && srcx < srcpsd->xres);
        assert (srcy >= 0 && srcy < srcpsd->yres);
        assert (dstx+w <= dstpsd->xres);
        assert (dsty+h <= dstpsd->yres);
        assert (srcx+w <= srcpsd->xres);
        assert (srcy+h <= srcpsd->yres);
 
        DRAWON;
        dst += (dstx + dsty * dstpsd->linelen) * 3;
        src += (srcx + srcy * srcpsd->linelen) * 3;
 
#if ALPHABLEND
        if((op & MWROP_EXTENSION) != MWROP_BLENDCONSTANT)
                goto stdblit;
        alpha = op & 0xff;
 
        while(--h >= 0) {
                for(i=0; i<w; ++i) {
                        unsigned long s = *src++;
                        unsigned long d = *dst;
                        *dst++ = (unsigned char)(((s - d)*alpha)>>8) + d;
                        s = *src++;
                        d = *dst;
                        *dst++ = (unsigned char)(((s - d)*alpha)>>8) + d;
                        s = *src++;
                        d = *dst;
                        *dst++ = (unsigned char)(((s - d)*alpha)>>8) + d;
                }
                dst += dlinelen_minus_w;
                src += slinelen_minus_w;
        }
        DRAWOFF;
        return;
stdblit:
#endif
 
        if (op == MWROP_COPY) {
                /* copy from bottom up if dst in src rectangle*/
                /* memmove is used to handle x case*/
                if (srcy < dsty) {
                        src += (h-1) * slinelen;
                        dst += (h-1) * dlinelen;
                        slinelen *= -1;
                        dlinelen *= -1;
                }
                while(--h >= 0) {
                        /* a _fast_ memcpy is a _must_ in this routine*/
                        memmove(dst, src, w*3);
                        dst += dlinelen;
                        src += slinelen;
                }
        } else {
                for(i=w*3; i>=0; --i) {
                        applyOp(MWROP_TO_MODE(op), *src, dst, ADDR8);
                        ++src;
                        ++dst;
                }
                dst += dlinelen_minus_w;
                src += slinelen_minus_w;
        }
        DRAWOFF;
}
 
/* srccopy stretchblt*/
static void
linear24_stretchblit(PSD dstpsd, MWCOORD dstx, MWCOORD dsty, MWCOORD dstw,
        MWCOORD dsth, PSD srcpsd, MWCOORD srcx, MWCOORD srcy, MWCOORD srcw,
        MWCOORD srch, long op)
{
        ADDR8   dst;
        ADDR8   src;
        int     dlinelen = dstpsd->linelen;
        int     slinelen = srcpsd->linelen;
        int     i, ymax;
        int     row_pos, row_inc;
        int     col_pos, col_inc;
        unsigned char r = 0;
        unsigned char g = 0;
        unsigned char b = 0;
 
        assert (dstpsd->addr != 0);
        assert (dstx >= 0 && dstx < dstpsd->xres);
        assert (dsty >= 0 && dsty < dstpsd->yres);
        assert (dstw > 0);
        assert (dsth > 0);
        assert (srcpsd->addr != 0);
        assert (srcx >= 0 && srcx < srcpsd->xres);
        assert (srcy >= 0 && srcy < srcpsd->yres);
        assert (srcw > 0);
        assert (srch > 0);
        assert (dstx+dstw <= dstpsd->xres);
        assert (dsty+dsth <= dstpsd->yres);
        assert (srcx+srcw <= srcpsd->xres);
        assert (srcy+srch <= srcpsd->yres);
 
        DRAWON;
        row_pos = 0x10000;
        row_inc = (srch << 16) / dsth;
 
        /* stretch blit using integer ratio between src/dst height/width*/
        for (ymax = dsty+dsth; dsty<ymax; ++dsty) {
 
                /* find source y position*/
                while (row_pos >= 0x10000L) {
                        ++srcy;
                        row_pos -= 0x10000L;
                }
 
                dst = dstpsd->addr + (dstx + dsty*dlinelen) * 3;
                src = srcpsd->addr + (srcx + (srcy-1)*slinelen) * 3;
 
                /* copy a row of pixels*/
                col_pos = 0x10000;
                col_inc = (srcw << 16) / dstw;
                for (i=0; i<dstw; ++i) {
                        /* get source x pixel*/
                        while (col_pos >= 0x10000L) {
                                b = *src++;
                                g = *src++;
                                r = *src++;
                                col_pos -= 0x10000L;
                        }
                        *dst++ = b;
                        *dst++ = g;
                        *dst++ = r;
                        col_pos += col_inc;
                }
 
                row_pos += row_inc;
        }
        DRAWOFF;
}
 
SUBDRIVER fblinear24 = {
        linear24_init,
        linear24_drawpixel,
        linear24_readpixel,
        linear24_drawhorzline,
        linear24_drawvertline,
        gen_fillrect,
        linear24_blit,
        NULL,
        linear24_stretchblit
};

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[/] [or1k/] [tags/] [MW_0_8_9PRE7/] [mw/] [src/] [drivers/] [fblin24.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	673	markom	`/*`
2			`* Copyright (c) 2000, 2001 Greg Haerr <greg@censoft.com>`
3			`*`
4			`* 24bpp Linear Video Driver for Microwindows`
5			`*/`
6			`/#define NDEBUG/`
7			`#include <assert.h>`
8			`#include <string.h>`
9			`#include "device.h"`
10			`#include "fb.h"`
11
12			`/* Calc linelen and mmap size, return 0 on fail*/`
13			`static int`
14			`linear24_init(PSD psd)`
15			`{`
16			`if (!psd->size) {`
17			`psd->size = psd->yres * psd->linelen;`
18			`/* convert linelen from byte to pixel len for bpp 16, 24, 32*/`
19			`psd->linelen /= 3;`
20			`}`
21			`return 1;`
22			`}`
23
24			`/* Set pixel at x, y, to pixelval c*/`
25			`static void`
26			`linear24_drawpixel(PSD psd, MWCOORD x, MWCOORD y, MWPIXELVAL c)`
27			`{`
28			`ADDR8 addr = psd->addr;`
29			`MWUCHAR r, g, b;`
30
31			`assert (addr != 0);`
32			`assert (x >= 0 && x < psd->xres);`
33			`assert (y >= 0 && y < psd->yres);`
34			`assert (c < psd->ncolors);`
35
36			`r = PIXEL888RED(c);`
37			`g = PIXEL888GREEN(c);`
38			`b = PIXEL888BLUE(c);`
39			`addr += (x + y * psd->linelen) * 3;`
40			`DRAWON;`
41			`if(gr_mode == MWMODE_COPY) {`
42			`*addr++ = b;`
43			`*addr++ = g;`
44			`*addr = r;`
45			`} else {`
46			`applyOp(gr_mode, b, addr, ADDR8); ++addr;`
47			`applyOp(gr_mode, g, addr, ADDR8); ++addr;`
48			`applyOp(gr_mode, r, addr, ADDR8);`
49			`}`
50			`DRAWOFF;`
51			`}`
52
53			`/* Read pixel at x, y*/`
54			`static MWPIXELVAL`
55			`linear24_readpixel(PSD psd, MWCOORD x, MWCOORD y)`
56			`{`
57			`ADDR8 addr = psd->addr;`
58
59			`assert (addr != 0);`
60			`assert (x >= 0 && x < psd->xres);`
61			`assert (y >= 0 && y < psd->yres);`
62
63			`addr += (x + y * psd->linelen) * 3;`
64			`return RGB2PIXEL888(addr[2], addr[1], addr[0]);`
65			`}`
66
67			`/* Draw horizontal line from x1,y to x2,y including final point*/`
68			`static void`
69			`linear24_drawhorzline(PSD psd, MWCOORD x1, MWCOORD x2, MWCOORD y, MWPIXELVAL c)`
70			`{`
71			`ADDR8 addr = psd->addr;`
72			`MWUCHAR r, g, b;`
73
74			`assert (addr != 0);`
75			`assert (x1 >= 0 && x1 < psd->xres);`
76			`assert (x2 >= 0 && x2 < psd->xres);`
77			`assert (x2 >= x1);`
78			`assert (y >= 0 && y < psd->yres);`
79			`assert (c < psd->ncolors);`
80
81			`r = PIXEL888RED(c);`
82			`g = PIXEL888GREEN(c);`
83			`b = PIXEL888BLUE(c);`
84			`addr += (x1 + y * psd->linelen) * 3;`
85			`DRAWON;`
86			`if(gr_mode == MWMODE_COPY) {`
87			`while(x1++ <= x2) {`
88			`*addr++ = b;`
89			`*addr++ = g;`
90			`*addr++ = r;`
91			`}`
92			`} else {`
93			`while (x1++ <= x2) {`
94			`applyOp(gr_mode, b, addr, ADDR8); ++addr;`
95			`applyOp(gr_mode, g, addr, ADDR8); ++addr;`
96			`applyOp(gr_mode, r, addr, ADDR8); ++addr;`
97			`}`
98			`}`
99			`DRAWOFF;`
100			`}`
101
102			`/* Draw a vertical line from x,y1 to x,y2 including final point*/`
103			`static void`
104			`linear24_drawvertline(PSD psd, MWCOORD x, MWCOORD y1, MWCOORD y2, MWPIXELVAL c)`
105			`{`
106			`ADDR8 addr = psd->addr;`
107			`int linelen = psd->linelen * 3;`
108			`MWUCHAR r, g, b;`
109
110			`assert (addr != 0);`
111			`assert (x >= 0 && x < psd->xres);`
112			`assert (y1 >= 0 && y1 < psd->yres);`
113			`assert (y2 >= 0 && y2 < psd->yres);`
114			`assert (y2 >= y1);`
115			`assert (c < psd->ncolors);`
116
117			`r = PIXEL888RED(c);`
118			`g = PIXEL888GREEN(c);`
119			`b = PIXEL888BLUE(c);`
120			`addr += (x + y1 * psd->linelen) * 3;`
121			`DRAWON;`
122			`if(gr_mode == MWMODE_COPY) {`
123			`while(y1++ <= y2) {`
124			`addr[0] = b;`
125			`addr[1] = g;`
126			`addr[2] = r;`
127			`addr += linelen;`
128			`}`
129			`} else {`
130			`while (y1++ <= y2) {`
131			`applyOp(gr_mode, b, &addr[0], ADDR8);`
132			`applyOp(gr_mode, g, &addr[1], ADDR8);`
133			`applyOp(gr_mode, r, &addr[2], ADDR8);`
134			`addr += linelen;`
135			`}`
136			`}`
137			`DRAWOFF;`
138			`}`
139
140			`/* srccopy bitblt, opcode is currently ignored*/`
141			`static void`
142			`linear24_blit(PSD dstpsd, MWCOORD dstx, MWCOORD dsty, MWCOORD w, MWCOORD h,`
143			`PSD srcpsd, MWCOORD srcx, MWCOORD srcy, long op)`
144			`{`
145			`ADDR8 dst = dstpsd->addr;`
146			`ADDR8 src = srcpsd->addr;`
147			`int i;`
148			`int dlinelen = dstpsd->linelen * 3;`
149			`int slinelen = srcpsd->linelen * 3;`
150			`int dlinelen_minus_w = (dstpsd->linelen - w) * 3;`
151			`int slinelen_minus_w = (srcpsd->linelen - w) * 3;`
152			`#if ALPHABLEND`
153			`unsigned int alpha;`
154			`#endif`
155
156			`assert (dst != 0);`
157			`assert (dstx >= 0 && dstx < dstpsd->xres);`
158			`assert (dsty >= 0 && dsty < dstpsd->yres);`
159			`assert (w > 0);`
160			`assert (h > 0);`
161			`assert (src != 0);`
162			`assert (srcx >= 0 && srcx < srcpsd->xres);`
163			`assert (srcy >= 0 && srcy < srcpsd->yres);`
164			`assert (dstx+w <= dstpsd->xres);`
165			`assert (dsty+h <= dstpsd->yres);`
166			`assert (srcx+w <= srcpsd->xres);`
167			`assert (srcy+h <= srcpsd->yres);`
168
169			`DRAWON;`
170			`dst += (dstx + dsty * dstpsd->linelen) * 3;`
171			`src += (srcx + srcy * srcpsd->linelen) * 3;`
172
173			`#if ALPHABLEND`
174			`if((op & MWROP_EXTENSION) != MWROP_BLENDCONSTANT)`
175			`goto stdblit;`
176			`alpha = op & 0xff;`
177
178			`while(--h >= 0) {`
179			`for(i=0; i<w; ++i) {`
180			`unsigned long s = *src++;`
181			`unsigned long d = *dst;`
182			`dst++ = (unsigned char)(((s - d)alpha)>>8) + d;`
183			`s = *src++;`
184			`d = *dst;`
185			`dst++ = (unsigned char)(((s - d)alpha)>>8) + d;`
186			`s = *src++;`
187			`d = *dst;`
188			`dst++ = (unsigned char)(((s - d)alpha)>>8) + d;`
189			`}`
190			`dst += dlinelen_minus_w;`
191			`src += slinelen_minus_w;`
192			`}`
193			`DRAWOFF;`
194			`return;`
195			`stdblit:`
196			`#endif`
197
198			`if (op == MWROP_COPY) {`
199			`/* copy from bottom up if dst in src rectangle*/`
200			`/* memmove is used to handle x case*/`
201			`if (srcy < dsty) {`
202			`src += (h-1) * slinelen;`
203			`dst += (h-1) * dlinelen;`
204			`slinelen *= -1;`
205			`dlinelen *= -1;`
206			`}`
207			`while(--h >= 0) {`
208			`/* a _fast_ memcpy is a _must_ in this routine*/`
209			`memmove(dst, src, w*3);`
210			`dst += dlinelen;`
211			`src += slinelen;`
212			`}`
213			`} else {`
214			`for(i=w*3; i>=0; --i) {`
215			`applyOp(MWROP_TO_MODE(op), *src, dst, ADDR8);`
216			`++src;`
217			`++dst;`
218			`}`
219			`dst += dlinelen_minus_w;`
220			`src += slinelen_minus_w;`
221			`}`
222			`DRAWOFF;`
223			`}`
224
225			`/* srccopy stretchblt*/`
226			`static void`
227			`linear24_stretchblit(PSD dstpsd, MWCOORD dstx, MWCOORD dsty, MWCOORD dstw,`
228			`MWCOORD dsth, PSD srcpsd, MWCOORD srcx, MWCOORD srcy, MWCOORD srcw,`
229			`MWCOORD srch, long op)`
230			`{`
231			`ADDR8 dst;`
232			`ADDR8 src;`
233			`int dlinelen = dstpsd->linelen;`
234			`int slinelen = srcpsd->linelen;`
235			`int i, ymax;`
236			`int row_pos, row_inc;`
237			`int col_pos, col_inc;`
238			`unsigned char r = 0;`
239			`unsigned char g = 0;`
240			`unsigned char b = 0;`
241
242			`assert (dstpsd->addr != 0);`
243			`assert (dstx >= 0 && dstx < dstpsd->xres);`
244			`assert (dsty >= 0 && dsty < dstpsd->yres);`
245			`assert (dstw > 0);`
246			`assert (dsth > 0);`
247			`assert (srcpsd->addr != 0);`
248			`assert (srcx >= 0 && srcx < srcpsd->xres);`
249			`assert (srcy >= 0 && srcy < srcpsd->yres);`
250			`assert (srcw > 0);`
251			`assert (srch > 0);`
252			`assert (dstx+dstw <= dstpsd->xres);`
253			`assert (dsty+dsth <= dstpsd->yres);`
254			`assert (srcx+srcw <= srcpsd->xres);`
255			`assert (srcy+srch <= srcpsd->yres);`
256
257			`DRAWON;`
258			`row_pos = 0x10000;`
259			`row_inc = (srch << 16) / dsth;`
260
261			`/* stretch blit using integer ratio between src/dst height/width*/`
262			`for (ymax = dsty+dsth; dsty<ymax; ++dsty) {`
263
264			`/* find source y position*/`
265			`while (row_pos >= 0x10000L) {`
266			`++srcy;`
267			`row_pos -= 0x10000L;`
268			`}`
269
270			`dst = dstpsd->addr + (dstx + dstydlinelen) 3;`
271			`src = srcpsd->addr + (srcx + (srcy-1)slinelen) 3;`
272
273			`/* copy a row of pixels*/`
274			`col_pos = 0x10000;`
275			`col_inc = (srcw << 16) / dstw;`
276			`for (i=0; i<dstw; ++i) {`
277			`/* get source x pixel*/`
278			`while (col_pos >= 0x10000L) {`
279			`b = *src++;`
280			`g = *src++;`
281			`r = *src++;`
282			`col_pos -= 0x10000L;`
283			`}`
284			`*dst++ = b;`
285			`*dst++ = g;`
286			`*dst++ = r;`
287			`col_pos += col_inc;`
288			`}`
289
290			`row_pos += row_inc;`
291			`}`
292			`DRAWOFF;`
293			`}`
294
295			`SUBDRIVER fblinear24 = {`
296			`linear24_init,`
297			`linear24_drawpixel,`
298			`linear24_readpixel,`
299			`linear24_drawhorzline,`
300			`linear24_drawvertline,`
301			`gen_fillrect,`
302			`linear24_blit,`
303			`NULL,`
304			`linear24_stretchblit`
305			`};`