diff options
Diffstat (limited to 'engines/gob/dataio.h')
| -rw-r--r-- | engines/gob/dataio.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/engines/gob/dataio.h b/engines/gob/dataio.h index 08498a4f7e..3560093d9e 100644 --- a/engines/gob/dataio.h +++ b/engines/gob/dataio.h @@ -37,6 +37,32 @@ namespace Gob { #define MAX_DATA_FILES 8 #define MAX_SLOT_COUNT 8 +class DataIO; + +class DataStream : public Common::SeekableReadStream { +public: + DataStream(DataIO &io, int16 handle, uint32 dSize, bool dispose = false); + DataStream(byte *buf, uint32 dSize, bool dispose = true); + virtual ~DataStream(); + + virtual uint32 pos() const; + virtual uint32 size() const; + + virtual void seek(int32 offset, int whence = SEEK_SET); + + virtual bool eos() const; + + virtual uint32 read(void *dataPtr, uint32 dataSize); + +private: + DataIO *_io; + int16 _handle; + uint32 _size; + byte *_data; + Common::MemoryReadStream *_stream; + bool _dispose; +}; + class DataIO { public: struct ChunkDesc { @@ -55,6 +81,8 @@ public: void closeData(int16 handle); int16 openData(const char *path, Common::File::AccessMode mode = Common::File::kFileReadMode); + DataStream *openAsStream(int16 handle, bool dispose = false); + int32 readData(int16 handle, byte *buf, uint16 size); byte readByte(int16 handle); uint16 readUint16(int16 handle); @@ -64,6 +92,7 @@ public: uint32 getPos(int16 handle); int32 getDataSize(const char *name); byte *getData(const char *path); + DataStream *getDataStream(const char *path); DataIO(class GobEngine *vm); ~DataIO(); @@ -85,13 +114,16 @@ protected: int16 file_open(const char *path, Common::File::AccessMode mode = Common::File::kFileReadMode); Common::File *file_getHandle(int16 handle); + const Common::File *file_getHandle(int16 handle) const; int16 getChunk(const char *chunkName); char freeChunk(int16 handle); int32 readChunk(int16 handle, byte *buf, uint16 size); int16 seekChunk(int16 handle, int32 pos, int16 from); - uint32 getChunkPos(int16 handle); + uint32 getChunkPos(int16 handle) const; int32 getChunkSize(const char *chunkName); + +friend class DataStream; }; } // End of namespace Gob |