thirdparty/scummvm
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ACCESS: Added decompression code

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This commit is contained in:
Paul Gilbert 2014-08-03 16:59:22 -04:00
parent 7a63e12edb
commit d41c5cd740
5 changed files with 196 additions and 20 deletions
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33
engines/access/files.cpp
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@ -68,6 +68,8 @@ void FileManager::openFile(const Common::String &filename) {
_file.close();
if (_file.open(filename))
error("Could not open file - %s", filename.c_str());
_filesize = _file.size();
}
byte *FileManager::loadScreen(int fileNum, int subfile) {
@ -83,11 +85,11 @@ byte *FileManager::loadScreen(const Common::String &filename) {
openFile(filename);
// Get the palette
_vm->_screen->loadPalette(_stream);
_vm->_screen->loadPalette(&_file);
// Get a stream for the remainder of the file
delete _stream;
_stream = _file.readStream(_file.size());
_stream = _file.readStream(_file.size() - _file.pos());
return handleFile();
}
@ -95,23 +97,25 @@ byte *FileManager::loadScreen(const Common::String &filename) {
byte *FileManager::handleFile() {
char header[3];
_stream->read(&header[0], 3);
_stream->seek(-3, SEEK_CUR);
if (!strncmp(header, "DBE", 3))
// Decompress the resource
return decompressFile();
// Not compressed, so pass out all of the file
_stream->seek(0);
byte *data = new byte[_stream->size()];
_stream->read(data, _stream->size());
bool isCompressed = !strncmp(header, "DBE", 3);
// Get the data from the file or resource
_filesize = _stream->size() - _stream->pos();
byte *data = new byte[_filesize];
_stream->read(data, _filesize);
// If the data is compressed, uncompress it
if (isCompressed) {
byte *src = data;
_filesize = decompressDBE(src, &data);
delete[] src;
}
return data;
}
byte *FileManager::decompressFile() {
error("TODO: decompression");
}
void FileManager::setAppended(int fileNum) {
if (_fileNumber != fileNum) {
_fileNumber = fileNum;
@ -138,5 +142,4 @@ void FileManager::gotoAppended(int subfile) {
_stream = _file.readStream(size);
}
} // End of namespace Access