102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
/*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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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 Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributors: Amorilia (amorilia@gamebox.net)
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/imbuf/intern/dds/Stream.cpp
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* \ingroup imbdds
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*/
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#include <Stream.h>
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#include <stdio.h> // printf
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#include <string.h> // memcpy
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unsigned int Stream::seek(unsigned int p)
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{
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if (p > size) {
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printf("DDS: trying to seek beyond end of stream (corrupt file?)");
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}
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else {
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pos = p;
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}
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return pos;
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}
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unsigned int mem_read(Stream & mem, unsigned long long & i)
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{
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if (mem.pos + 8 > mem.size) {
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printf("DDS: trying to read beyond end of stream (corrupt file?)");
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return(0);
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};
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memcpy(&i, mem.mem + mem.pos, 8); // @@ todo: make sure little endian
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mem.pos += 8;
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return(8);
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}
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unsigned int mem_read(Stream & mem, unsigned int & i)
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{
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if (mem.pos + 4 > mem.size) {
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printf("DDS: trying to read beyond end of stream (corrupt file?)");
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return(0);
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};
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memcpy(&i, mem.mem + mem.pos, 4); // @@ todo: make sure little endian
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mem.pos += 4;
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return(4);
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}
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unsigned int mem_read(Stream & mem, unsigned short & i)
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{
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if (mem.pos + 2 > mem.size) {
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printf("DDS: trying to read beyond end of stream (corrupt file?)");
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return(0);
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};
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memcpy(&i, mem.mem + mem.pos, 2); // @@ todo: make sure little endian
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mem.pos += 2;
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return(2);
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}
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unsigned int mem_read(Stream & mem, unsigned char & i)
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{
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if (mem.pos + 1 > mem.size) {
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printf("DDS: trying to read beyond end of stream (corrupt file?)");
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return(0);
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};
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i = (mem.mem + mem.pos)[0];
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mem.pos += 1;
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return(1);
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}
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unsigned int mem_read(Stream & mem, unsigned char *i, unsigned int cnt)
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{
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if (mem.pos + cnt > mem.size) {
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printf("DDS: trying to read beyond end of stream (corrupt file?)");
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return(0);
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};
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memcpy(i, mem.mem + mem.pos, cnt);
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mem.pos += cnt;
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return(cnt);
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}
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