624 lines
13 KiB
C
624 lines
13 KiB
C
/*
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*
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* Copyright © 2000 SuSE, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of SuSE not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. SuSE makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Keith Packard, SuSE, Inc.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <string.h>
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#include "fb.h"
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/* X apps don't like 24bpp images, this code exposes 32bpp images */
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/*
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* These two functions do a full CopyArea while reformatting
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* the data between 24 and 32bpp. They try to go a bit faster
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* by reading/writing aligned CARD32s where it's easy
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*/
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#define Get8(a) ((CARD32) *(a))
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#if BITMAP_BIT_ORDER == MSBFirst
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#define Get24(a) ((Get8(a) << 16) | (Get8((a)+1) << 8) | Get8((a)+2))
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#define Put24(a,p) (((a)[0] = (CARD8) ((p) >> 16)), \
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((a)[1] = (CARD8) ((p) >> 8)), \
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((a)[2] = (CARD8) (p)))
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#else
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#define Get24(a) (Get8(a) | (Get8((a)+1) << 8) | (Get8((a)+2)<<16))
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#define Put24(a,p) (((a)[0] = (CARD8) (p)), \
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((a)[1] = (CARD8) ((p) >> 8)), \
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((a)[2] = (CARD8) ((p) >> 16)))
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#endif
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typedef void (*fb24_32BltFunc) (CARD8 *srcLine,
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FbStride srcStride,
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int srcX,
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CARD8 *dstLine,
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FbStride dstStride,
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int dstX,
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int width,
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int height,
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int alu,
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FbBits pm);
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static void
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fb24_32BltDown (CARD8 *srcLine,
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FbStride srcStride,
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int srcX,
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CARD8 *dstLine,
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FbStride dstStride,
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int dstX,
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int width,
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int height,
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int alu,
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FbBits pm)
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{
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CARD32 *src;
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CARD8 *dst;
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int w;
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Bool destInvarient;
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CARD32 pixel, dpixel;
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FbDeclareMergeRop ();
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srcLine += srcX * 4;
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dstLine += dstX * 3;
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FbInitializeMergeRop(alu, (pm | ~(FbBits) 0xffffff));
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destInvarient = FbDestInvarientMergeRop();
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while (height--)
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{
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src = (CARD32 *) srcLine;
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dst = dstLine;
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srcLine += srcStride;
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dstLine += dstStride;
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w = width;
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if (destInvarient)
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{
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while (((long) dst & 3) && w)
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{
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w--;
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pixel = *src++;
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pixel = FbDoDestInvarientMergeRop(pixel);
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Put24 (dst, pixel);
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dst += 3;
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}
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/* Do four aligned pixels at a time */
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while (w >= 4)
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{
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CARD32 s0, s1;
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s0 = *src++;
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s0 = FbDoDestInvarientMergeRop(s0);
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s1 = *src++;
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s1 = FbDoDestInvarientMergeRop(s1);
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#if BITMAP_BIT_ORDER == LSBFirst
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*(CARD32 *)(dst) = (s0 & 0xffffff) | (s1 << 24);
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#else
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*(CARD32 *)(dst) = (s0 << 8) | ((s1 & 0xffffff) >> 16);
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#endif
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s0 = *src++;
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s0 = FbDoDestInvarientMergeRop(s0);
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#if BITMAP_BIT_ORDER == LSBFirst
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*(CARD32 *)(dst+4) = ((s1 & 0xffffff) >> 8) | (s0 << 16);
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#else
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*(CARD32 *)(dst+4) = (s1 << 16) | ((s0 & 0xffffff) >> 8);
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#endif
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s1 = *src++;
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s1 = FbDoDestInvarientMergeRop(s1);
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#if BITMAP_BIT_ORDER == LSBFirst
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*(CARD32 *)(dst+8) = ((s0 & 0xffffff) >> 16) | (s1 << 8);
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#else
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*(CARD32 *)(dst+8) = (s0 << 24) | (s1 & 0xffffff);
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#endif
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dst += 12;
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w -= 4;
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}
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while (w--)
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{
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pixel = *src++;
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pixel = FbDoDestInvarientMergeRop(pixel);
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Put24 (dst, pixel);
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dst += 3;
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}
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}
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else
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{
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while (w--)
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{
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pixel = *src++;
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dpixel = Get24 (dst);
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pixel = FbDoMergeRop(pixel, dpixel);
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Put24 (dst, pixel);
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dst += 3;
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}
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}
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}
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}
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static void
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fb24_32BltUp (CARD8 *srcLine,
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FbStride srcStride,
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int srcX,
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CARD8 *dstLine,
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FbStride dstStride,
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int dstX,
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int width,
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int height,
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int alu,
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FbBits pm)
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{
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CARD8 *src;
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CARD32 *dst;
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int w;
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Bool destInvarient;
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CARD32 pixel;
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FbDeclareMergeRop ();
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FbInitializeMergeRop(alu, (pm | (~(FbBits) 0xffffff)));
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destInvarient = FbDestInvarientMergeRop();
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srcLine += srcX * 3;
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dstLine += dstX * 4;
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while (height--)
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{
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w = width;
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src = srcLine;
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dst = (CARD32 *) dstLine;
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srcLine += srcStride;
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dstLine += dstStride;
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if (destInvarient)
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{
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while (((long) src & 3) && w)
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{
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w--;
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pixel = Get24(src);
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src += 3;
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*dst++ = FbDoDestInvarientMergeRop(pixel);
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}
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/* Do four aligned pixels at a time */
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while (w >= 4)
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{
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CARD32 s0, s1;
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s0 = *(CARD32 *)(src);
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#if BITMAP_BIT_ORDER == LSBFirst
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pixel = s0 & 0xffffff;
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#else
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pixel = s0 >> 8;
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#endif
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*dst++ = FbDoDestInvarientMergeRop(pixel);
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s1 = *(CARD32 *)(src+4);
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#if BITMAP_BIT_ORDER == LSBFirst
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pixel = (s0 >> 24) | ((s1 << 8) & 0xffffff);
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#else
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pixel = ((s0 << 16) & 0xffffff) | (s1 >> 16);
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#endif
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*dst++ = FbDoDestInvarientMergeRop(pixel);
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s0 = *(CARD32 *)(src+8);
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#if BITMAP_BIT_ORDER == LSBFirst
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pixel = (s1 >> 16) | ((s0 << 16) & 0xffffff);
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#else
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pixel = ((s1 << 8) & 0xffffff) | (s0 >> 24);
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#endif
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*dst++ = FbDoDestInvarientMergeRop(pixel);
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#if BITMAP_BIT_ORDER == LSBFirst
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pixel = s0 >> 8;
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#else
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pixel = s0 & 0xffffff;
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#endif
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*dst++ = FbDoDestInvarientMergeRop(pixel);
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src += 12;
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w -= 4;
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}
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while (w)
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{
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w--;
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pixel = Get24(src);
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src += 3;
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*dst++ = FbDoDestInvarientMergeRop(pixel);
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}
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}
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else
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{
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while (w--)
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{
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pixel = Get24(src);
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src += 3;
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*dst = FbDoMergeRop(pixel, *dst);
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dst++;
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}
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}
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}
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}
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/*
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* Spans functions; probably unused.
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*/
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void
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fb24_32GetSpans(DrawablePtr pDrawable,
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int wMax,
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DDXPointPtr ppt,
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int *pwidth,
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int nspans,
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char *pchardstStart)
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{
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FbBits *srcBits;
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CARD8 *src;
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FbStride srcStride;
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int srcBpp;
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int srcXoff, srcYoff;
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CARD8 *dst;
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fbGetDrawable (pDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
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src = (CARD8 *) srcBits;
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srcStride *= sizeof (FbBits);
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while (nspans--)
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{
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dst = (CARD8 *) pchardstStart;
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fb24_32BltUp (src + (ppt->y + srcYoff) * srcStride, srcStride,
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ppt->x + srcXoff,
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dst,
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1,
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0,
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*pwidth,
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1,
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GXcopy,
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FB_ALLONES);
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pchardstStart += PixmapBytePad(*pwidth, pDrawable->depth);
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ppt++;
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pwidth++;
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}
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}
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void
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fb24_32SetSpans (DrawablePtr pDrawable,
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GCPtr pGC,
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char *src,
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DDXPointPtr ppt,
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int *pwidth,
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int nspans,
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int fSorted)
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{
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FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
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RegionPtr pClip = fbGetCompositeClip(pGC);
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FbBits *dstBits;
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CARD8 *dst, *d, *s;
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FbStride dstStride;
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int dstBpp;
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int dstXoff, dstYoff;
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BoxPtr pbox;
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int n;
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int x1, x2;
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fbGetDrawable (pDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
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dst = (CARD8 *) dstBits;
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dstStride *= sizeof (FbBits);
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while (nspans--)
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{
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d = dst + (ppt->y + dstYoff) * dstStride;
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s = (CARD8 *) src;
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n = REGION_NUM_RECTS(pClip);
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pbox = REGION_RECTS (pClip);
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while (n--)
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{
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if (pbox->y1 > ppt->y)
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break;
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if (pbox->y2 > ppt->y)
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{
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x1 = ppt->x;
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x2 = x1 + *pwidth;
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if (pbox->x1 > x1)
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x1 = pbox->x1;
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if (pbox->x2 < x2)
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x2 = pbox->x2;
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if (x1 < x2)
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fb24_32BltDown (s,
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0,
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(x1 - ppt->x),
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d,
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dstStride,
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x1 + dstXoff,
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(x2 - x1),
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1,
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pGC->alu,
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pPriv->pm);
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}
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}
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src += PixmapBytePad (*pwidth, pDrawable->depth);
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ppt++;
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pwidth++;
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}
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}
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/*
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* Clip and put 32bpp Z-format images to a 24bpp drawable
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*/
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void
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fb24_32PutZImage (DrawablePtr pDrawable,
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RegionPtr pClip,
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int alu,
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FbBits pm,
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int x,
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int y,
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int width,
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int height,
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CARD8 *src,
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FbStride srcStride)
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{
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FbBits *dstBits;
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CARD8 *dst;
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FbStride dstStride;
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int dstBpp;
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int dstXoff, dstYoff;
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int nbox;
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BoxPtr pbox;
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int x1, y1, x2, y2;
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fbGetDrawable (pDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
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dstStride *= sizeof(FbBits);
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dst = (CARD8 *) dstBits;
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for (nbox = REGION_NUM_RECTS (pClip),
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pbox = REGION_RECTS(pClip);
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nbox--;
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pbox++)
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{
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x1 = x;
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y1 = y;
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x2 = x + width;
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y2 = y + height;
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if (x1 < pbox->x1)
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x1 = pbox->x1;
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if (y1 < pbox->y1)
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y1 = pbox->y1;
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if (x2 > pbox->x2)
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x2 = pbox->x2;
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if (y2 > pbox->y2)
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y2 = pbox->y2;
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if (x1 >= x2 || y1 >= y2)
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continue;
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fb24_32BltDown (src + (y1 - y) * srcStride,
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srcStride,
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(x1 - x),
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dst + (y1 + dstYoff) * dstStride,
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dstStride,
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x1 + dstXoff,
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(x2 - x1),
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(y2 - y1),
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alu,
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pm);
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}
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}
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void
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fb24_32GetImage (DrawablePtr pDrawable,
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int x,
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int y,
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int w,
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int h,
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unsigned int format,
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unsigned long planeMask,
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char *d)
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{
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FbBits *srcBits;
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CARD8 *src;
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FbStride srcStride;
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int srcBpp;
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int srcXoff, srcYoff;
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FbStride dstStride;
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FbBits pm;
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fbGetDrawable (pDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
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src = (CARD8 *) srcBits;
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srcStride *= sizeof (FbBits);
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x += pDrawable->x;
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y += pDrawable->y;
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pm = fbReplicatePixel (planeMask, 32);
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dstStride = PixmapBytePad(w, pDrawable->depth);
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if (pm != FB_ALLONES)
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memset (d, 0, dstStride * h);
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fb24_32BltUp (src + (y + srcYoff) * srcStride, srcStride, x + srcXoff,
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(CARD8 *) d, dstStride, 0,
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w, h, GXcopy, pm);
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}
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void
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fb24_32CopyMtoN (DrawablePtr pSrcDrawable,
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DrawablePtr pDstDrawable,
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GCPtr pGC,
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BoxPtr pbox,
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int nbox,
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int dx,
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int dy,
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Bool reverse,
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Bool upsidedown,
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Pixel bitplane,
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void *closure)
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{
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FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
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FbBits *srcBits;
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CARD8 *src;
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FbStride srcStride;
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int srcBpp;
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FbBits *dstBits;
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CARD8 *dst;
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FbStride dstStride;
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int dstBpp;
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fb24_32BltFunc blt;
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int srcXoff, srcYoff;
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int dstXoff, dstYoff;
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fbGetDrawable (pSrcDrawable, srcBits, srcStride, srcBpp, srcXoff, srcYoff);
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src = (CARD8 *) srcBits;
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srcStride *= sizeof (FbBits);
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fbGetDrawable (pDstDrawable, dstBits, dstStride, dstBpp, dstXoff, dstYoff);
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dst = (CARD8 *) dstBits;
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dstStride *= sizeof (FbBits);
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if (srcBpp == 24)
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blt = fb24_32BltUp;
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else
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blt = fb24_32BltDown;
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while (nbox--)
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{
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(*blt) (src + (pbox->y1 + dy + srcYoff) * srcStride,
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srcStride,
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(pbox->x1 + dx + srcXoff),
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dst + (pbox->y1 + dstYoff) * dstStride,
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dstStride,
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(pbox->x1 + dstXoff),
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(pbox->x2 - pbox->x1),
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(pbox->y2 - pbox->y1),
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pGC->alu,
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pPriv->pm);
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pbox++;
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}
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}
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PixmapPtr
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fb24_32ReformatTile(PixmapPtr pOldTile, int bitsPerPixel)
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{
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ScreenPtr pScreen = pOldTile->drawable.pScreen;
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PixmapPtr pNewTile;
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FbBits *old, *new;
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FbStride oldStride, newStride;
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int oldBpp, newBpp;
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fb24_32BltFunc blt;
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int oldXoff, oldYoff;
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int newXoff, newYoff;
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pNewTile = fbCreatePixmapBpp (pScreen,
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pOldTile->drawable.width,
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pOldTile->drawable.height,
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pOldTile->drawable.depth,
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bitsPerPixel);
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if (!pNewTile)
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return 0;
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fbGetDrawable (&pOldTile->drawable,
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old, oldStride, oldBpp, oldXoff, oldYoff);
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fbGetDrawable (&pNewTile->drawable,
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new, newStride, newBpp, newXoff, newYoff);
|
|
if (oldBpp == 24)
|
|
blt = fb24_32BltUp;
|
|
else
|
|
blt = fb24_32BltDown;
|
|
|
|
(*blt) ((CARD8 *) old,
|
|
oldStride * sizeof (FbBits),
|
|
0,
|
|
|
|
(CARD8 *) new,
|
|
newStride * sizeof (FbBits),
|
|
0,
|
|
|
|
pOldTile->drawable.width,
|
|
pOldTile->drawable.height,
|
|
|
|
GXcopy,
|
|
FB_ALLONES);
|
|
|
|
return pNewTile;
|
|
}
|
|
|
|
typedef struct {
|
|
pointer pbits;
|
|
int width;
|
|
} miScreenInitParmsRec, *miScreenInitParmsPtr;
|
|
|
|
Bool
|
|
fb24_32CreateScreenResources(ScreenPtr pScreen)
|
|
{
|
|
miScreenInitParmsPtr pScrInitParms;
|
|
int pitch;
|
|
Bool retval;
|
|
|
|
/* get the pitch before mi destroys it */
|
|
pScrInitParms = (miScreenInitParmsPtr)pScreen->devPrivate;
|
|
pitch = BitmapBytePad(pScrInitParms->width * 24);
|
|
|
|
if((retval = miCreateScreenResources(pScreen))) {
|
|
/* fix the screen pixmap */
|
|
PixmapPtr pPix = (PixmapPtr)pScreen->devPrivate;
|
|
pPix->drawable.bitsPerPixel = 24;
|
|
pPix->devKind = pitch;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
Bool
|
|
fb24_32ModifyPixmapHeader (PixmapPtr pPixmap,
|
|
int width,
|
|
int height,
|
|
int depth,
|
|
int bitsPerPixel,
|
|
int devKind,
|
|
pointer pPixData)
|
|
{
|
|
int bpp, w;
|
|
|
|
if (!pPixmap)
|
|
return FALSE;
|
|
bpp = bitsPerPixel;
|
|
if (bpp <= 0)
|
|
bpp = pPixmap->drawable.bitsPerPixel;
|
|
if (bpp == 24)
|
|
{
|
|
if (devKind < 0)
|
|
{
|
|
w = width;
|
|
if (w <= 0)
|
|
w = pPixmap->drawable.width;
|
|
devKind = BitmapBytePad(w * 24);
|
|
}
|
|
}
|
|
return miModifyPixmapHeader(pPixmap, width, height, depth, bitsPerPixel,
|
|
devKind, pPixData);
|
|
}
|