mirror of
https://github.com/scummvm/scummvm.git
synced 2026-06-20 05:45:29 +00:00
Robin Watts
caae53a25a
in my mockup - I don't have a smartphone resolution device to test it. svn-id: r42516
242 lines
7.5 KiB
C++
242 lines
7.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "graphics/scaler/intern.h"
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#include "CEScaler.h"
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template<int bitFormat>
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void PocketPCPortraitTemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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uint8 *work;
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int i;
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while (height--) {
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i = 0;
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work = dstPtr;
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for (int i=0; i<width; i+=4) {
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// Work with 4 pixels
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uint16 color1 = *(((const uint16 *)srcPtr) + i);
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uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
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uint16 color3 = *(((const uint16 *)srcPtr) + (i + 2));
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uint16 color4 = *(((const uint16 *)srcPtr) + (i + 3));
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*(((uint16 *)work) + 0) = interpolate32_3_1<bitFormat>(color1, color2);
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*(((uint16 *)work) + 1) = interpolate32_1_1<bitFormat>(color2, color3);
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*(((uint16 *)work) + 2) = interpolate32_3_1<bitFormat>(color4, color3);
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work += 3 * sizeof(uint16);
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}
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srcPtr += srcPitch;
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dstPtr += dstPitch;
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}
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}
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MAKE_WRAPPER(PocketPCPortrait)
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void PocketPCRawPortrait(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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while (height--) {
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memcpy(dstPtr, srcPtr, width*sizeof(uint16_t));
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srcPtr += srcPitch;
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dstPtr += dstPitch;
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}
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}
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// Our version of an aspect scaler. Main difference is the out-of-place
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// operation, omitting a straight blit step the sdl backend does. Also,
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// tests show unaligned access errors with the stock aspect scaler.
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void PocketPCLandscapeAspect(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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const int redblueMasks[] = { 0x7C1F, 0xF81F };
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const int greenMasks[] = { 0x03E0, 0x07E0 };
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const int RBM = redblueMasks[gBitFormat == 565];
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const int GM = greenMasks[gBitFormat == 565];
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int i,j;
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unsigned int p1, p2;
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uint8 *inbuf, *outbuf, *instart, *outstart;
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#define RB(x) ((x & RBM)<<8)
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#define G(x) ((x & GM)<<3)
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#define P20(x) (((x)>>2)-((x)>>4))
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#define P40(x) (((x)>>1)-((x)>>3))
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#define P60(x) (((x)>>1)+((x)>>3))
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#define P80(x) (((x)>>1)+((x)>>2)+((x)>>4))
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#define MAKEPIXEL(rb,g) ((((rb)>>8) & RBM | ((g)>>3) & GM))
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inbuf = (uint8 *)srcPtr;
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outbuf = (uint8 *)dstPtr;
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height /= 5;
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for (i = 0; i < height; i++) {
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instart = inbuf;
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outstart = outbuf;
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for (j=0; j < width; j++) {
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p1 = *(uint16*)inbuf; inbuf += srcPitch;
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*(uint16*)outbuf = p1; outbuf += dstPitch;
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p2 = *(uint16*)inbuf; inbuf += srcPitch;
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*(uint16*)outbuf = MAKEPIXEL(P20(RB(p1))+P80(RB(p2)),P20(G(p1))+P80(G(p2))); outbuf += dstPitch;
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p1 = p2;
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p2 = *(uint16*)inbuf; inbuf += srcPitch;
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*(uint16*)outbuf = MAKEPIXEL(P40(RB(p1))+P60(RB(p2)),P40(G(p1))+P60(G(p2))); outbuf += dstPitch;
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p1 = p2;
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p2 = *(uint16*)inbuf; inbuf += srcPitch;
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*(uint16*)outbuf = MAKEPIXEL(P60(RB(p1))+P40(RB(p2)),P60(G(p1))+P40(G(p2))); outbuf += dstPitch;
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p1 = p2;
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p2 = *(uint16*)inbuf;
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*(uint16*)outbuf = MAKEPIXEL(P80(RB(p1))+P20(RB(p2)),P80(G(p1))+P20(G(p2))); outbuf += dstPitch;
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*(uint16*)outbuf = p2;
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inbuf = inbuf - srcPitch*4 + sizeof(uint16);
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outbuf = outbuf - dstPitch*5 + sizeof(uint16);
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}
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inbuf = instart + srcPitch*5;
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outbuf = outstart + dstPitch*6;
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}
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}
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#ifdef ARM
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extern "C" {
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void PocketPCHalfARM(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height, int mask, int round);
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void SmartphoneLandscapeARM(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height, int mask);
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// Rounding constants and masks used for different pixel formats
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int roundingconstants[] = { 0x00200802, 0x00201002 };
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int redbluegreenMasks[] = { 0x03E07C1F, 0x07E0F81F };
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}
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#endif
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template<int bitFormat>
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void PocketPCHalfTemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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uint8 *work;
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int i;
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uint16 srcPitch16 = (uint16)(srcPitch / sizeof(uint16));
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while ((height -= 2) >= 0) {
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i = 0;
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work = dstPtr;
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for (int i=0; i<width; i+=2) {
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// Another lame filter attempt :)
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uint16 color1 = *(((const uint16 *)srcPtr) + i);
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uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
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uint16 color3 = *(((const uint16 *)srcPtr) + (i + srcPitch16));
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uint16 color4 = *(((const uint16 *)srcPtr) + (i + srcPitch16 + 1));
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*(((uint16 *)work) + 0) = interpolate16_1_1_1_1<bitFormat>(color1, color2, color3, color4);
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work += sizeof(uint16);
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}
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srcPtr += 2 * srcPitch;
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dstPtr += dstPitch;
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}
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}
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void PocketPCHalf(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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#ifdef ARM
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int maskUsed = (gBitFormat == 565);
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PocketPCHalfARM(srcPtr, srcPitch, dstPtr, dstPitch, width, height, redbluegreenMasks[maskUsed],roundingconstants[maskUsed]);
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#else
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if (gBitFormat == 565)
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PocketPCHalfTemplate<565>(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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else
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PocketPCHalfTemplate<555>(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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#endif
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}
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template<int bitFormat>
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void PocketPCHalfZoomTemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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uint8 *work;
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int i;
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uint16 srcPitch16 = (uint16)(srcPitch / sizeof(uint16));
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if (!height)
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return;
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while (height--) {
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i = 0;
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work = dstPtr;
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for (int i = 0; i < width; i += 2) {
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uint16 color1 = *(((const uint16 *)srcPtr) + i);
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uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
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*(((uint16 *)work) + 0) = interpolate32_1_1<bitFormat>(color1, color2);
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work += sizeof(uint16);
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}
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srcPtr += srcPitch;
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dstPtr += dstPitch;
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}
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}
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MAKE_WRAPPER(PocketPCHalfZoom)
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template<int bitFormat>
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void SmartphoneLandscapeTemplate(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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uint8 *work;
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int i;
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int line = 0;
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while (height--) {
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i = 0;
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work = dstPtr;
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for (int i = 0; i < width; i += 3) {
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// Filter 2/3
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uint16 color1 = *(((const uint16 *)srcPtr) + i);
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uint16 color2 = *(((const uint16 *)srcPtr) + (i + 1));
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uint16 color3 = *(((const uint16 *)srcPtr) + (i + 2));
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*(((uint16 *)work) + 0) = interpolate32_3_1<bitFormat>(color1, color2);
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*(((uint16 *)work) + 1) = interpolate32_3_1<bitFormat>(color3, color2);
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work += 2 * sizeof(uint16);
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}
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srcPtr += srcPitch;
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dstPtr += dstPitch;
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line++;
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if (line == 7) {
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line = 0;
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srcPtr += srcPitch;
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height--;
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}
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}
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}
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void SmartphoneLandscape(const uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height) {
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#ifdef ARM
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int maskUsed = (gBitFormat == 565);
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SmartphoneLandscapeARM(srcPtr, srcPitch, dstPtr, dstPitch, width, height, redbluegreenMasks[maskUsed]);
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#else
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if (gBitFormat == 565)
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SmartphoneLandscape<565>(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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else
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SmartphoneLandscape<555>(srcPtr, srcPitch, dstPtr, dstPitch, width, height);
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#endif
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}
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