本文整理汇总了C++中common::MemoryReadStream::pos方法的典型用法代码示例。如果您正苦于以下问题：C++ MemoryReadStream::pos方法的具体用法？C++ MemoryReadStream::pos怎么用？C++ MemoryReadStream::pos使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类common::MemoryReadStream的用法示例。
在下文中一共展示了MemoryReadStream::pos方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: dumpFaceMask
bool Node::dumpFaceMask(uint16 index, int face, DirectorySubEntry::ResourceType type) {
static const int32 kMaskSize = 640 * 640;
byte *mask = new byte[kMaskSize];
memset(mask, 0, kMaskSize);
uint32 headerOffset = 0;
uint32 dataOffset = 0;
const DirectorySubEntry *maskDesc = _vm->getFileDescription(0, index, face, type);
if (!maskDesc) {
delete[] mask;
return false;
}
Common::MemoryReadStream *maskStream = maskDesc->getData();
while (headerOffset < 400) {
int blockX = (headerOffset / sizeof(dataOffset)) % 10;
int blockY = (headerOffset / sizeof(dataOffset)) / 10;
maskStream->seek(headerOffset, SEEK_SET);
dataOffset = maskStream->readUint32LE();
headerOffset = maskStream->pos();
if (dataOffset != 0) {
maskStream->seek(dataOffset, SEEK_SET);
for(int i = 63; i >= 0; i--) {
int x = 0;
byte numValues = maskStream->readByte();
for (int j = 0; j < numValues; j++) {
byte repeat = maskStream->readByte();
byte value = maskStream->readByte();
for (int k = 0; k < repeat; k++) {
mask[((blockY * 64) + i) * 640 + blockX * 64 + x] = value;
x++;
}
}
}
}
}
delete maskStream;
Common::DumpFile outFile;
outFile.open(Common::String::format("dump/%d-%d.masku_%d", index, face, type));
outFile.write(mask, kMaskSize);
outFile.close();
delete[] mask;
return true;
}示例2: loadChunked
void PictureResource::loadChunked(byte *source, int size) {
// Loads a "chunked" picture as used in Manhole EGA
Common::MemoryReadStream *sourceS = new Common::MemoryReadStream(source, size);
byte cmdFlags = 0, pixelFlags = 0, maskFlags = 0;
uint16 cmdOffs = 0, pixelOffs = 0, maskOffs = 0;
uint16 lineSize = 0, width = 0, height = 0;
sourceS->skip(36); // skip the "Flex" header
_hasPalette = false;
while (!sourceS->eos()) {
uint32 chunkType = sourceS->readUint32BE();
uint32 chunkSize = sourceS->readUint32BE();
if (sourceS->eos())
break;
debug(0, "chunkType = %08X; chunkSize = %d", chunkType, chunkSize);
if (chunkType == MKTAG('R','e','c','t')) {
debug(0, "Rect");
sourceS->skip(4);
height = sourceS->readUint16BE();
width = sourceS->readUint16BE();
debug(0, "width = %d; height = %d", width, height);
} else if (chunkType == MKTAG('f','M','a','p')) {
debug(0, "fMap");
lineSize = sourceS->readUint16BE();
sourceS->skip(11);
cmdFlags = sourceS->readByte();
cmdOffs = sourceS->pos();
sourceS->skip(chunkSize - 14);
debug(0, "lineSize = %d; cmdFlags = %d; cmdOffs = %04X", lineSize, cmdFlags, cmdOffs);
} else if (chunkType == MKTAG('f','L','C','o')) {
debug(0, "fLCo");
sourceS->skip(9);
pixelFlags = sourceS->readByte();
pixelOffs = sourceS->pos();
sourceS->skip(chunkSize - 10);
debug(0, "pixelFlags = %d; pixelOffs = %04X", pixelFlags, pixelOffs);
} else if (chunkType == MKTAG('f','P','i','x')) {
debug(0, "fPix");
sourceS->skip(9);
maskFlags = sourceS->readByte();
maskOffs = sourceS->pos();
sourceS->skip(chunkSize - 10);
debug(0, "maskFlags = %d; maskOffs = %04X", maskFlags, maskOffs);
} else if (chunkType == MKTAG('f','G','C','o')) {
debug(0, "fGCo");
_hasPalette = true;
_paletteColorCount = chunkSize / 3;
_picturePalette = new byte[_paletteColorCount * 3];
sourceS->read(_picturePalette, _paletteColorCount * 3);
} else {
error("PictureResource::loadChunked() Invalid chunk %08X at %08X", chunkType, sourceS->pos());
}
}
if (!cmdOffs || !pixelOffs /*|| !maskOffs*/ || !lineSize || !width || !height) {
error("PictureResource::loadChunked() Error parsing the picture data, one or more chunks/parameters are missing");
}
_picture = new Graphics::Surface();
_picture->create(width, height, Graphics::PixelFormat::createFormatCLUT8());
decompressImage(source, *_picture, cmdOffs, pixelOffs, maskOffs, lineSize, cmdFlags, pixelFlags, maskFlags);
delete sourceS;
}