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https://github.com/libretro/scummvm.git
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added nut renderer, there is bug with font width, fix later
svn-id: r6126
This commit is contained in:
Paweł Kołodziejski
parent
0ef7d52448
commit
fb47f2a24b
233
scumm/nut_renderer.cpp
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233
scumm/nut_renderer.cpp
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/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001/2002 The ScummVM project
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#include "stdafx.h"
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#include "engine.h"
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#include "nut_renderer.h"
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NutRenderer::NutRenderer() {
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_initialized = false;
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_loaded = false;
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_dataSrc = NULL;
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}
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NutRenderer::~NutRenderer() {
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if (_dataSrc != NULL)
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free(_dataSrc);
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}
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void NutRenderer::decodeCodec44(byte *dst, byte *src, uint32 length) {
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byte val;
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uint16 size_line;
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uint16 num;
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do {
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size_line = READ_LE_UINT16(src);
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src += 2;
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length -= 2;
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for (; size_line != 0;) {
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num = *src++;
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val = *src++;
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memset(dst, val, num);
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dst += num;
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length -= 2;
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size_line -= 2;
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if (size_line == 0) break;
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num = READ_LE_UINT16(src) + 1;
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src += 2;
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memcpy(dst, src, num);
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dst += num;
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src += num;
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length -= num + 2;
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size_line -= num + 2;
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}
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dst--;
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} while (length > 1);
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}
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void NutRenderer::bindDisplay(byte *dst, int32 width, int32 height, int32 pitch) {
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debug(2, "NutRenderer::init() called");
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if (_initialized == true) {
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debug(2, "NutRenderer::init() Already initialized, ok, changing...");
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}
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_dstPtr = dst;
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_dstWidth = width;
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_dstHeight = height;
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_dstPitch = pitch;
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_initialized = true;
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}
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bool NutRenderer::loadFont(char *filename, char *dir) {
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debug(2, "NutRenderer::loadFont() called");
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if (_loaded == true) {
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debug(2, "NutRenderer::loadFont() Font already loaded, ok, loading...");
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}
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File file;
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file.open(filename, dir);
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if (file.isOpen() == false) {
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debug(2, "NutRenderer::loadFont() Can't open font file: %s", filename);
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return false;
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}
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uint32 tag = file.readUint32BE();
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if (tag != 'ANIM') {
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debug(2, "NutRenderer::loadFont() there is no ANIM chunk in font header");
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return false;
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}
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uint32 length = file.readUint32BE();
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_dataSrc = (byte *)malloc(length);
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file.read(_dataSrc, length);
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file.close();
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if (READ_BE_UINT32(_dataSrc) != 'AHDR') {
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debug(2, "NutRenderer::loadFont() there is no AHDR chunk in font header");
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free(_dataSrc);
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return false;
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}
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int32 l;
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uint32 offset = READ_BE_UINT32(_dataSrc + 4) + 8;
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for (l = 0; l < 256; l++) {
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if (READ_BE_UINT32(_dataSrc + offset) == 'FRME') {
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offset += 8;
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if (READ_BE_UINT32(_dataSrc + offset) == 'FOBJ') {
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_offsets[l] = offset + 8;
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offset += READ_BE_UINT32(_dataSrc + offset + 4) + 8;
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}
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else {
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debug(2, "NutRenderer::loadFont() there is no FRME chunk");
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free(_dataSrc);
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return false;
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}
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}
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else {
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debug(2, "NutRenderer::loadFont() there is no FOBJ chunk in FRME chunk");
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free(_dataSrc);
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return false;
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}
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}
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_loaded = true;
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return true;
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}
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int32 NutRenderer::getCharWidth(char c) {
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debug(2, "NutRenderer::getCharWidth() called");
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if (_loaded == false) {
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debug(2, "NutRenderer::getCharWidth() Font is not loaded");
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return 0;
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}
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return READ_LE_UINT16(_dataSrc + _offsets[c] + 6);
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}
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int32 NutRenderer::getCharHeight(char c) {
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debug(2, "NutRenderer::getCharHeight() called");
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if (_loaded == false) {
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debug(2, "NutRenderer::getCharHeight() Font is not loaded");
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return 0;
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}
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return READ_LE_UINT16(_dataSrc + _offsets[c] + 8);
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}
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int32 NutRenderer::getStringWidth(char *string) {
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debug(2, "NutRenderer::getStringWidth() called");
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if (_loaded == false) {
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debug(2, "NutRenderer::getStringWidth() Font is not loaded");
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return 0;
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}
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int32 length = 0;
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int32 l = 0;
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do {
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length += getCharWidth(string[l]);
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l++;
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} while (string[l] != 0);
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return length;
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}
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void NutRenderer::drawString(char *string, int32 x, int32 y, byte color, int32 mode) {
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debug(2, "NutRenderer::getDrawString() called");
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if (_loaded == false) {
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debug(2, "NutRenderer::getDrawString() Font is not loaded");
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return;
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}
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int32 l = 0;
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do {
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if ((x < 0) || (y < 0) || (x > _dstWidth) || (y > _dstHeight)) {
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debug(2, "NutRenderer::getDrawString() position x, y out of range");
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return;
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}
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x += getCharWidth(string[l]);
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drawChar(string[l], x, y, 0);
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l++;
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} while (string[l] != 0);
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}
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void NutRenderer::drawChar(char c, int32 x, int32 y, byte color) {
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debug(2, "NutRenderer::getDrawChar() called");
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if (_loaded == false) {
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debug(2, "NutRenderer::getDrawChar() Font is not loaded");
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return;
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}
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byte * src = (byte*)(_dataSrc + _offsets[c] + 14);
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uint32 length = READ_BE_UINT32(_dataSrc + _offsets[c] - 4) - 14;
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decodeCodec44(_tmpCodecBuffer, src, length);
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int32 width = READ_LE_UINT16(_dataSrc + _offsets[c] + 6);
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int32 height = READ_LE_UINT16(_dataSrc + _offsets[c] + 8);
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for (int32 ty = 0; ty < height; ty++) {
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for (int32 tx = 0; tx < width; tx++) {
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byte pixel = *(_tmpCodecBuffer + ty * width + tx);
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if (pixel != 0) {
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if (color == 0) {
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if (pixel == 0x01)
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pixel = 0xf;
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}
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else {
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if (pixel == 0x01)
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pixel = color;
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}
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if (pixel == 0xff)
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pixel = 0x0;
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*(_dstPtr + ((ty + y) * _dstPitch + x + tx)) = pixel;
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}
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}
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}
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}
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53
scumm/nut_renderer.h
Normal file
53
scumm/nut_renderer.h
Normal file
@ -0,0 +1,53 @@
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/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001/2002 The ScummVM project
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#ifndef NUT_RENDERER_H
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#define NUT_RENDERER_H
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#include "common/file.h"
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class NutRenderer {
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private:
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int32 _offsets[256];
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byte _tmpCodecBuffer[2000];
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byte *_dataSrc;
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byte *_dstPtr;
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bool _initialized;
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bool _loaded;
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int32 _dstWidth, _dstHeight, _dstPitch;
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void decodeCodec44(byte *dst, byte *src, uint32 length);
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public:
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NutRenderer();
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~NutRenderer();
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void bindDisplay(byte *dst, int32 width, int32 height, int32 pitch);
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bool loadFont(char *filename, char *dir);
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void drawChar(char c, int32 x, int32 y, byte color);
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void drawString(char *string, int32 x, int32 y, byte color, int32 mode);
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int32 getCharWidth(char c);
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int32 getCharHeight(char c);
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int32 getStringWidth(char *string);
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};
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#endif
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