[Scummvm-cvs-logs] SF.net SVN: scummvm:[48314] scummvm/trunk/engines/teenagent
megath at users.sourceforge.net
megath at users.sourceforge.net
Sat Mar 20 14:52:08 CET 2010
Revision: 48314
http://scummvm.svn.sourceforge.net/scummvm/?rev=48314&view=rev
Author: megath
Date: 2010-03-20 13:52:08 +0000 (Sat, 20 Mar 2010)
Log Message:
-----------
added TransientFilePack
Modified Paths:
--------------
scummvm/trunk/engines/teenagent/pack.cpp
scummvm/trunk/engines/teenagent/pack.h
Modified: scummvm/trunk/engines/teenagent/pack.cpp
===================================================================
--- scummvm/trunk/engines/teenagent/pack.cpp 2010-03-20 13:18:47 UTC (rev 48313)
+++ scummvm/trunk/engines/teenagent/pack.cpp 2010-03-20 13:52:08 UTC (rev 48314)
@@ -77,11 +77,87 @@
Common::SeekableReadStream *FilePack::getStream(uint32 id) const {
if (id < 1 || id > _fileCount)
+ return NULL;
+ //debug(0, "stream: %04x-%04x", offsets[id - 1], offsets[id]);
+ file.seek(offsets[id - 1]);
+ uint32 size = offsets[id] - offsets[id - 1];
+ byte *ptr = (byte *)malloc(size);
+ if (ptr == NULL)
+ return NULL;
+ uint32 r = file.read(ptr, size);
+ return new Common::MemoryReadStream(ptr, r, DisposeAfterUse::YES);
+}
+
+
+TransientFilePack::TransientFilePack() : offsets(0) {}
+
+TransientFilePack::~TransientFilePack() {
+ close();
+}
+
+void TransientFilePack::close() {
+ delete[] offsets;
+ offsets = NULL;
+ _filename.clear();
+}
+
+bool TransientFilePack::open(const Common::String &filename) {
+ _filename = filename;
+
+ Common::File file;
+ if (!file.open(filename))
+ return false;
+
+ _fileCount = file.readUint32LE();
+ debug(0, "opened %s, found %u entries", filename.c_str(), _fileCount);
+ offsets = new uint32[_fileCount + 1];
+ for (uint32 i = 0; i <= _fileCount; ++i) {
+ offsets[i] = file.readUint32LE();
+ }
+ return true;
+}
+
+uint32 TransientFilePack::getSize(uint32 id) const {
+ if (id < 1 || id > _fileCount)
return 0;
+ return offsets[id] - offsets[id - 1];
+}
+
+uint32 TransientFilePack::read(uint32 id, byte *dst, uint32 size) const {
+ if (id < 1 || id > _fileCount)
+ return 0;
+
+ Common::File file;
+ if (!file.open(_filename))
+ return 0;
+
+ file.seek(offsets[id - 1]);
+ uint32 rsize = offsets[id] - offsets[id - 1];
+ uint32 r = file.read(dst, MIN(rsize, size));
+ file.close();
+ //debug(0, "read(%u, %u) = %u", id, size, r);
+ return r;
+}
+
+Common::SeekableReadStream *TransientFilePack::getStream(uint32 id) const {
+ if (id < 1 || id > _fileCount)
+ return NULL;
//debug(0, "stream: %04x-%04x", offsets[id - 1], offsets[id]);
- return new Common::SeekableSubReadStream(&file, offsets[id - 1], offsets[id], DisposeAfterUse::NO);
+ Common::File file;
+ if (!file.open(_filename))
+ return NULL;
+
+ file.seek(offsets[id - 1]);
+ uint32 size = offsets[id] - offsets[id - 1];
+ byte *ptr = (byte *)malloc(size);
+ if (ptr == NULL)
+ return NULL;
+ uint32 r = file.read(ptr, size);
+ file.close();
+ return new Common::MemoryReadStream(ptr, r, DisposeAfterUse::YES);
}
+
void MemoryPack::close() {
chunks.clear();
}
Modified: scummvm/trunk/engines/teenagent/pack.h
===================================================================
--- scummvm/trunk/engines/teenagent/pack.h 2010-03-20 13:18:47 UTC (rev 48313)
+++ scummvm/trunk/engines/teenagent/pack.h 2010-03-20 13:52:08 UTC (rev 48314)
@@ -62,6 +62,22 @@
virtual Common::SeekableReadStream *getStream(uint32 id) const;
};
+class TransientFilePack : public Pack {
+ uint32 *offsets;
+ Common::String _filename;
+
+public:
+ TransientFilePack();
+ ~TransientFilePack();
+
+ virtual bool open(const Common::String &filename);
+ virtual void close();
+
+ virtual uint32 getSize(uint32 id) const;
+ virtual uint32 read(uint32 id, byte *dst, uint32 size) const;
+ virtual Common::SeekableReadStream *getStream(uint32 id) const;
+};
+
class MemoryPack : public Pack {
struct Chunk {
byte *data;
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