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https://github.com/libretro/scummvm.git
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SLUDGE: remove implementation of tga.h
This commit is contained in:
yinsimei
Eugene Sandulenko
parent
dc380b4ba4
commit
c44b4f3128
@ -1,299 +0,0 @@
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/* 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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*
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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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*
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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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*/
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#include <stdio.h>
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#include "tga.h"
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//FILE * debugFile = fopen ("TGAdebug.txt", "wt");
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unsigned short int makeColour (unsigned char r, unsigned char g, unsigned char b) {
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unsigned short int reply = (unsigned short int) (r >> 3);
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reply <<= 6;
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reply += (unsigned short int) (g >> 2);
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reply <<= 5;
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reply += (unsigned short int) (b >> 3);
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return reply & 65503;
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}
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int get2bytesReverse (FILE * fp) {
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int a = fgetc (fp);
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return a + fgetc (fp) * 256;
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}
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int countDown = 0;
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bool dither24bitImages = 0;
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char ditherArray[4][4] = {{4,12,6,14},{10,0,8,2},{7,15,5,13},{9,3,11,1}};
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void grabRGBA (FILE * fp, int bpc, unsigned char & r, unsigned char & g, unsigned char & b, unsigned char & a, palCol thePalette[])
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{
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int grabbed1, grabbed2;
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switch (bpc) {
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case 8:
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grabbed1 = fgetc (fp);
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r = thePalette[grabbed1].r;
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g = thePalette[grabbed1].g;
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b = thePalette[grabbed1].b;
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if (r == 255 && g == 0 && b == 255) {
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r = g = b = a = 0;
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} else a = 255;
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break;
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case 16:
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grabbed1 = fgetc (fp);
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grabbed2 = fgetc (fp);
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if (grabbed2*256+grabbed1 == 31775) {
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r=g=b=a=0;
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break;
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}
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r = ((grabbed2 & 127) << 1),
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g = ((grabbed1 & 224) >> 2) + (grabbed2 << 6);
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b = ((grabbed1 & 31) << 3);
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if (r == 255 && g == 0 && b == 255) {
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r = g = b = a = 0;
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} else a = 255;
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break;
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case 24:
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b = fgetc (fp);
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g = fgetc (fp);
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r = fgetc (fp);
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if (r == 255 && g == 0 && b == 255) {
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r = g = b = a = 0;
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} else a = 255;
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break;
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case 32:
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b = fgetc (fp);
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g = fgetc (fp);
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r = fgetc (fp);
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a = fgetc (fp);
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break;
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}
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}
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void grabRGB (FILE * fp, int bpc, unsigned char & r, unsigned char & g, unsigned char & b, palCol thePalette[])
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{
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int a;
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int grabbed1, grabbed2;
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switch (bpc) {
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case 8:
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grabbed1 = fgetc (fp);
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r = thePalette[grabbed1].r;
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g = thePalette[grabbed1].g;
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b = thePalette[grabbed1].b;
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break;
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case 16:
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grabbed1 = fgetc (fp);
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grabbed2 = fgetc (fp);
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r = ((grabbed2 & 127) << 1),
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g = ((grabbed1 & 224) >> 2) + (grabbed2 << 6);
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b = ((grabbed1 & 31) << 3);
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break;
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case 24:
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b = fgetc (fp);
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g = fgetc (fp);
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r = fgetc (fp);
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break;
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case 32:
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b = fgetc (fp);
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g = fgetc (fp);
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r = fgetc (fp);
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a = fgetc (fp);
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if (a < 100) {
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r = 255;
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g = 0;
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b = 255;
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}
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break;
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}
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}
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void grabRGBACompressed (FILE * fp, int bpc, unsigned char & r2, unsigned char & g2, unsigned char & b2, unsigned char & a2, palCol thePalette[]) {
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static unsigned char r, g, b, a;
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static bool oneCol;
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unsigned short col;
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// Do we have to start a new packet?
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if (countDown == 0) {
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// Read the packet description thingy
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col = fgetc (fp);
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// Is it raw data?
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if (col >= 128) {
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oneCol = true;
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countDown = col - 127;
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grabRGBA (fp, bpc, r, g, b, a, thePalette);
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// fprintf (debugFile, " %d raw colours...\n", countDown);
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} else {
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oneCol = false;
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countDown = col + 1;
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// fprintf (debugFile, " %d pixels the same colour...\n", countDown);
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}
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}
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countDown --;
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if (! oneCol) {
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grabRGBA (fp, bpc, r2, g2, b2, a2, thePalette);
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} else {
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r2 = r;
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g2 = g;
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b2 = b;
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a2 = a;
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}
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}
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void grabRGBCompressed (FILE * fp, int bpc, unsigned char & r2, unsigned char & g2, unsigned char & b2, palCol thePalette[]) {
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static unsigned char r, g, b;
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static bool oneCol;
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unsigned short col;
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// Do we have to start a new packet?
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if (countDown == 0) {
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// Read the packet description thingy
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col = fgetc (fp);
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// Is it raw data?
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if (col >= 128) {
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oneCol = true;
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countDown = col - 127;
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grabRGB (fp, bpc, r, g, b, thePalette);
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// fprintf (debugFile, " %d raw colours...\n", countDown);
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} else {
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oneCol = false;
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countDown = col + 1;
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// fprintf (debugFile, " %d pixels the same colour...\n", countDown);
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}
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}
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countDown --;
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if (! oneCol) {
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grabRGB (fp, bpc, r2, g2, b2, thePalette);
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} else {
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r2 = r;
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g2 = g;
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b2 = b;
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}
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}
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void addDither (unsigned char & col, const unsigned char add)
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{
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int tot = col;
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tot += add;
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col = (tot > 255) ? 255 : tot;
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}
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unsigned short readAColour (FILE * fp, int bpc, palCol thePalette[], int x, int y) {
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unsigned char r,g,b;
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grabRGB (fp, bpc, r, g, b, thePalette);
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if (dither24bitImages)
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{
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addDither (r, ditherArray[x&3][y&3]);
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addDither (g, ditherArray[x&3][y&3] / 2);
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addDither (b, ditherArray[x&3][y&3]);
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}
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return makeColour (r, g, b);
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}
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unsigned short readCompressedColour (FILE * fp, int bpc, palCol thePalette[], int x, int y) {
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unsigned char r,g,b;
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grabRGBCompressed (fp, bpc, r, g, b, thePalette);
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if (dither24bitImages)
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{
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addDither (r, ditherArray[x&3][y&3]);
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addDither (g, ditherArray[x&3][y&3] / 2);
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addDither (b, ditherArray[x&3][y&3]);
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}
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return makeColour (r, g, b);
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}
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const char * readTGAHeader (TGAHeader & h, FILE * fp, palCol thePalette[]) {
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h.IDBlockSize = fgetc (fp);
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h.gotMap = fgetc (fp);
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unsigned char imageType = fgetc (fp);
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h.firstPalColour = get2bytesReverse (fp);
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h.numPalColours = get2bytesReverse (fp);
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h.bitsPerPalColour = fgetc (fp);
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h.xOrigin = get2bytesReverse (fp);
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h.yOrigin = get2bytesReverse (fp);
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h.width = get2bytesReverse (fp);
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h.height = get2bytesReverse (fp);
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h.pixelDepth = fgetc (fp);
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h.imageDescriptor = fgetc (fp);
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countDown = 0;
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// Who cares about the ID block?
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fseek (fp, h.IDBlockSize, 1);
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switch (imageType) {
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case 1:
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case 2:
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h.compressed = false;
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break;
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case 9:
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case 10:
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h.compressed = true;
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break;
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default:
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return "Unsupported internal image format... are you sure this is a valid TGA image file?";
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}
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if (h.pixelDepth != 8 && h.pixelDepth != 16 && h.pixelDepth != 24 && h.pixelDepth != 32) {
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return "Colour depth is not 8, 16, 24 or 32 bits... are you sure this is a valid TGA image file?";
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}
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if (h.gotMap) {
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int c;
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for (c = 0; c < h.numPalColours; c ++) {
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grabRGB (fp, h.bitsPerPalColour, thePalette[c].r, thePalette[c].g, thePalette[c].b, thePalette);
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}
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}
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return NULL;
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}
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void setDither (int dither)
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{
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dither24bitImages = dither;
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}
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bool getDither ()
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{
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return dither24bitImages;
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}
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@ -1,66 +0,0 @@
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/* 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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*
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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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*
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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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*/
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#include <stdio.h>
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struct TGAHeader {
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unsigned char IDBlockSize;
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unsigned char gotMap;
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bool compressed;
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unsigned short int firstPalColour;
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unsigned short int numPalColours;
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unsigned char bitsPerPalColour;
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unsigned short xOrigin;
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unsigned short yOrigin;
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unsigned short width;
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unsigned short height;
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unsigned char pixelDepth;
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unsigned char imageDescriptor;
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};
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struct palCol {
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unsigned char r, g, b;
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};
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void grabRGBCompressed(FILE *fp, int bpc, unsigned char &r2, unsigned char &g2, unsigned char &b2, palCol thePalette[]);
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void grabRGB(FILE *fp, int bpc, unsigned char &r, unsigned char &g, unsigned char &b, palCol thePalette[]);
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void grabRGBACompressed(FILE *fp, int bpc, unsigned char &r2, unsigned char &g2, unsigned char &b2, unsigned char &a2, palCol thePalette[]);
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void grabRGBA(FILE *fp, int bpc, unsigned char &r, unsigned char &g, unsigned char &b, unsigned char &a, palCol thePalette[]);
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unsigned short int makeColour(unsigned char r, unsigned char g, unsigned char b);
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unsigned short readAColour(FILE *fp, int bpc, palCol thePalette[], int x, int y);
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unsigned short readCompressedColour(FILE *fp, int bpc, palCol thePalette[], int x, int y);
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const char *readTGAHeader(TGAHeader &h, FILE *fp, palCol thePalette[]);
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void setDither(int dither);
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bool getDither();
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inline unsigned short redValue(unsigned short c) {
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return (c >> 11) << 3;
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}
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inline unsigned short greenValue(unsigned short c) {
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return ((c >> 5) & 63) << 2;
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}
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inline unsigned short blueValue(unsigned short c) {
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return (c & 31) << 3;
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}
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inline int brightness(unsigned short c) {
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return ((int) redValue(c)) + ((int) greenValue(c)) + ((int) blueValue(c) >> 1);
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}
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