diff --git a/engines/trecision/3d.cpp b/engines/trecision/3d.cpp
index 999d908c5f7..f05f930fa00 100644
--- a/engines/trecision/3d.cpp
+++ b/engines/trecision/3d.cpp
@@ -2073,19 +2073,19 @@ void PathFinding3D::initSortPan() {
 	}
 }
 
-void PathFinding3D::read3D(Common::SeekableReadStream *ff) {
+void PathFinding3D::read3D(Common::SeekableReadStreamEndian *ff) {
 	// read panels
-	_panelNum = ff->readSint32LE();
+	_panelNum = ff->readSint32();
 	if (_panelNum > MAXPANELSINROOM)
 		error("read3D(): Too many panels");
 
 	for (int i = 0; i < _panelNum; ++i) {
-		_panel[i]._x1 = ff->readFloatLE();
-		_panel[i]._z1 = ff->readFloatLE();
-		_panel[i]._x2 = ff->readFloatLE();
-		_panel[i]._z2 = ff->readFloatLE();
-		_panel[i]._h = ff->readFloatLE();
-		_panel[i]._flags = ff->readUint32LE();
+		_panel[i]._x1 = ff->readFloat();
+		_panel[i]._z1 = ff->readFloat();
+		_panel[i]._x2 = ff->readFloat();
+		_panel[i]._z2 = ff->readFloat();
+		_panel[i]._h = ff->readFloat();
+		_panel[i]._flags = ff->readUint32();
 
 		// Note : Despite the panels are stored in an int16 with a MAXPANELSINROOM set to 400,
 		// _panelNum is stored in a int32 and nearPanel1 and 2 were stored in an int8
diff --git a/engines/trecision/3d.h b/engines/trecision/3d.h
index ff6b264f073..e708a8e6fad 100644
--- a/engines/trecision/3d.h
+++ b/engines/trecision/3d.h
@@ -196,7 +196,7 @@ public:
 	void goToPosition(int num);
 	int nextStep();
 	void initSortPan();
-	void read3D(Common::SeekableReadStream *ff);
+	void read3D(Common::SeekableReadStreamEndian *ff);
 	void reset(uint16 idx, float px, float pz, float theta);
 	void whereIs(int px, int py);
 	void actorOrder();
diff --git a/engines/trecision/actor.cpp b/engines/trecision/actor.cpp
index 76525a00eda..c13ef28612a 100644
--- a/engines/trecision/actor.cpp
+++ b/engines/trecision/actor.cpp
@@ -309,50 +309,50 @@ void Actor::microproseHeadFix(uint32 actionNum) {
 }
 
 void Actor::readModel(const char *filename) {
-	Common::SeekableReadStream *ff = _vm->_dataFile.createReadStreamForMember(filename);
+	Common::SeekableReadStreamEndian *ff = _vm->readEndian(_vm->_dataFile.createReadStreamForMember(filename));
 	if (ff == nullptr)
 		error("readModel - Error opening file %s", filename);
 
-	uint32 actionNum = ff->readUint32LE();
-	_vertexNum = ff->readUint32LE();
+	uint32 actionNum = ff->readUint32();
+	_vertexNum = ff->readUint32();
 
 	_characterArea = new SVertex[_vertexNum * actionNum];
 	for (uint i = 0; i < _vertexNum * actionNum; ++i) {
-		_characterArea[i]._x = ff->readFloatLE();
-		_characterArea[i]._y = ff->readFloatLE();
-		_characterArea[i]._z = ff->readFloatLE();
-		_characterArea[i]._nx = ff->readFloatLE();
-		_characterArea[i]._ny = ff->readFloatLE();
-		_characterArea[i]._nz = ff->readFloatLE();
+		_characterArea[i]._x = ff->readFloat();
+		_characterArea[i]._y = ff->readFloat();
+		_characterArea[i]._z = ff->readFloat();
+		_characterArea[i]._nx = ff->readFloat();
+		_characterArea[i]._ny = ff->readFloat();
+		_characterArea[i]._nz = ff->readFloat();
 	}
 	_vertex = _characterArea;
-	_faceNum = ff->readUint32LE();
+	_faceNum = ff->readUint32();
 	delete ff;
 
-	ff = _vm->_dataFile.createReadStreamForMember("mat.tex");
+	ff = _vm->readEndian(_vm->_dataFile.createReadStreamForMember("mat.tex"));
 	if (ff == nullptr)
 		error("readModel - Error opening file mat.tex");
 
 	for (uint16 i = 0; i < 256; ++i) {
 		for (uint16 j = 0; j < 91; ++j)
-			_textureMat[i][j] = ff->readUint16LE();
+			_textureMat[i][j] = ff->readUint16();
 	}
 
 	_vm->_graphicsMgr->updatePixelFormat((uint16 *)_textureMat, 91 * 256);
 
 	for (uint16 i = 0; i < MAXFACE; ++i) {
 		for (uint16 j = 0; j < 3; ++j) {
-			_textureCoord[i][j][0] = ff->readSint16LE();
-			_textureCoord[i][j][1] = ff->readSint16LE();
+			_textureCoord[i][j][0] = ff->readSint16();
+			_textureCoord[i][j][1] = ff->readSint16();
 		}
 	}
 
 	_face = new SFace[_faceNum];
 	for (uint i = 0; i < _faceNum; ++i) {
-		_face[i]._a = ff->readUint16LE();
-		_face[i]._b = ff->readUint16LE();
-		_face[i]._c = ff->readUint16LE();
-		_face[i]._mat = ff->readUint16LE();
+		_face[i]._a = ff->readUint16();
+		_face[i]._b = ff->readUint16();
+		_face[i]._c = ff->readUint16();
+		_face[i]._mat = ff->readUint16();
 	}
 
 	delete ff;
@@ -444,34 +444,34 @@ void Actor::actorStop() {
 	_vm->_pathFind->_lastStep = 0;
 }
 
-void Actor::read3D(Common::SeekableReadStream *ff) {
+void Actor::read3D(Common::SeekableReadStreamEndian *ff) {
 	// read rooms and lights
 	SCamera *cam = _camera;
-	cam->_ex = ff->readFloatLE();
-	cam->_ey = ff->readFloatLE();
-	cam->_ez = ff->readFloatLE();
+	cam->_ex = ff->readFloat();
+	cam->_ey = ff->readFloat();
+	cam->_ez = ff->readFloat();
 	for (int i = 0; i < 3; ++i)
-		cam->_e1[i] = ff->readFloatLE();
+		cam->_e1[i] = ff->readFloat();
 	for (int i = 0; i < 3; ++i)
-		cam->_e2[i] = ff->readFloatLE();
+		cam->_e2[i] = ff->readFloat();
 	for (int i = 0; i < 3; ++i)
-		cam->_e3[i] = ff->readFloatLE();
-	cam->_fovX = ff->readFloatLE();
-	cam->_fovY = ff->readFloatLE();
+		cam->_e3[i] = ff->readFloat();
+	cam->_fovX = ff->readFloat();
+	cam->_fovY = ff->readFloat();
 
-	_lightNum = ff->readUint32LE();
+	_lightNum = ff->readUint32();
 	if (_lightNum > MAXLIGHT)
 		error("read3D(): Too many lights");
 
 	for (uint32 i = 0; i < _lightNum; ++i) {
-		_light[i]._x = ff->readFloatLE();
-		_light[i]._y = ff->readFloatLE();
-		_light[i]._z = ff->readFloatLE();
-		_light[i]._dx = ff->readFloatLE();
-		_light[i]._dy = ff->readFloatLE();
-		_light[i]._dz = ff->readFloatLE();
-		_light[i]._inr = ff->readFloatLE();
-		_light[i]._outr = ff->readFloatLE();
+		_light[i]._x = ff->readFloat();
+		_light[i]._y = ff->readFloat();
+		_light[i]._z = ff->readFloat();
+		_light[i]._dx = ff->readFloat();
+		_light[i]._dy = ff->readFloat();
+		_light[i]._dz = ff->readFloat();
+		_light[i]._inr = ff->readFloat();
+		_light[i]._outr = ff->readFloat();
 		_light[i]._hotspot = ff->readByte();
 		_light[i]._fallOff = ff->readByte();
 		_light[i]._inten = ff->readSByte();
diff --git a/engines/trecision/actor.h b/engines/trecision/actor.h
index b93d1643189..6b5d2ebfbb2 100644
--- a/engines/trecision/actor.h
+++ b/engines/trecision/actor.h
@@ -76,7 +76,7 @@ public:
 	void syncGameStream(Common::Serializer &ser);
 	void actorDoAction(int action);
 	void actorStop();
-	void read3D(Common::SeekableReadStream *ff);
+	void read3D(Common::SeekableReadStreamEndian *ff);
 	float frameCenter(SVertex *v);
 	void updateStepSound();
 };
diff --git a/engines/trecision/dialog.cpp b/engines/trecision/dialog.cpp
index b6f92dbd63c..164f320dc0e 100644
--- a/engines/trecision/dialog.cpp
+++ b/engines/trecision/dialog.cpp
@@ -698,50 +698,50 @@ void DialogManager::syncGameStream(Common::Serializer &ser) {
 	}
 }
 
-void DialogManager::loadData(Common::File *file) {
+void DialogManager::loadData(Common::SeekableReadStreamEndian *stream) {
 	for (int i = 0; i < MAXDIALOG; ++i) {
 		Dialog *dialog = &_dialog[i];
 
-		dialog->_flag = file->readUint16LE();
-		dialog->_interlocutor = file->readUint16LE();
+		dialog->_flag = stream->readUint16();
+		dialog->_interlocutor = stream->readUint16();
 
-		file->read(&dialog->_startAnim, 14);
+		stream->read(&dialog->_startAnim, 14);
 
-		dialog->_startLen = file->readUint16LE();
-		dialog->_firstChoice = file->readUint16LE();
-		dialog->_choiceNumb = file->readUint16LE();
+		dialog->_startLen = stream->readUint16();
+		dialog->_firstChoice = stream->readUint16();
+		dialog->_choiceNumb = stream->readUint16();
 
 		for (int j = 0; j < MAXNEWSMKPAL; ++j)
-			dialog->_newPal[j] = file->readUint16LE();
+			dialog->_newPal[j] = stream->readUint16();
 	}
 
 	for (int i = 0; i < MAXCHOICE; ++i) {
 		DialogChoice *choice = &_choice[i];
 
-		choice->_flag = file->readUint16LE();
-		choice->_sentenceIndex = file->readUint16LE();
-		choice->_firstSubTitle = file->readUint16LE();
-		choice->_subTitleNumb = file->readUint16LE();
+		choice->_flag = stream->readUint16();
+		choice->_sentenceIndex = stream->readUint16();
+		choice->_firstSubTitle = stream->readUint16();
+		choice->_subTitleNumb = stream->readUint16();
 
 		for (int j = 0; j < MAXDISPCHOICES; ++j)
-			choice->_on[j] = file->readUint16LE();
+			choice->_on[j] = stream->readUint16();
 
 		for (int j = 0; j < MAXDISPCHOICES; ++j)
-			choice->_off[j] = file->readUint16LE();
+			choice->_off[j] = stream->readUint16();
 
-		choice->_startFrame = file->readUint16LE();
-		choice->_nextDialog = file->readUint16LE();
+		choice->_startFrame = stream->readUint16();
+		choice->_nextDialog = stream->readUint16();
 	}
 
 	for (int i = 0; i < MAXSUBTITLES; ++i) {
 		DialogSubTitle *subTitle = &_subTitles[i];
 
-		subTitle->_sentence = file->readUint16LE();
-		subTitle->_x = file->readUint16LE();
-		subTitle->_y = file->readUint16LE();
-		subTitle->_color = file->readUint16LE();
-		subTitle->_startFrame = file->readUint16LE();
-		subTitle->_length = file->readUint16LE();
+		subTitle->_sentence = stream->readUint16();
+		subTitle->_x = stream->readUint16();
+		subTitle->_y = stream->readUint16();
+		subTitle->_color = stream->readUint16();
+		subTitle->_startFrame = stream->readUint16();
+		subTitle->_length = stream->readUint16();
 	}
 
 	if (_vm->isDemo()) {
diff --git a/engines/trecision/dialog.h b/engines/trecision/dialog.h
index ca03bceff43..ba1bf03a7c2 100644
--- a/engines/trecision/dialog.h
+++ b/engines/trecision/dialog.h
@@ -25,7 +25,7 @@
 
 #include "common/scummsys.h"
 #include "common/serializer.h"
-#include "common/file.h"
+#include "common/stream.h"
 
 namespace Trecision {
 class TrecisionEngine;
@@ -99,7 +99,7 @@ public:
 	uint16 getCurDialog() const { return _curDialog; }
 	uint16 getCurChoice() const { return _curChoice; }
 	void syncGameStream(Common::Serializer &ser);
-	void loadData(Common::File *file);
+	void loadData(Common::SeekableReadStreamEndian *stream);
 };
 // end of class
 
diff --git a/engines/trecision/resource.cpp b/engines/trecision/resource.cpp
index e6749babdaa..043188b4f90 100644
--- a/engines/trecision/resource.cpp
+++ b/engines/trecision/resource.cpp
@@ -26,6 +26,7 @@
 #include "common/savefile.h"
 #include "common/str.h"
 #include "common/translation.h"
+#include "common/substream.h"
 #include "gui/saveload.h"
 
 #include "trecision/trecision.h"
@@ -38,55 +39,63 @@
 #include "trecision/video.h"
 #include "trecision/sound.h"
 
-namespace Common {
-class File;
-}
-
 namespace Trecision {
 
+Common::SeekableReadStreamEndian *TrecisionEngine::readEndian(Common::SeekableReadStream *stream, DisposeAfterUse::Flag dispose) {
+	return new Common::SeekableSubReadStreamEndian(
+		stream,
+		0,
+		stream->size(),
+		_gameDescription->platform == Common::kPlatformAmiga,
+		dispose
+	);
+}
+
 void TrecisionEngine::loadAll() {
 	Common::File dataNl;
+
 	if (!dataNl.open("DATA.NL"))
 		error("loadAll : Couldn't open DATA.NL");
+	Common::SeekableReadStreamEndian *data = readEndian(&dataNl, DisposeAfterUse::NO);
 
 	for (int i = 0; i < MAXROOMS; ++i)
-		_room[i].loadRoom(&dataNl);
+		_room[i].loadRoom(data);
 
 	for (int i = 0; i < MAXOBJ; ++i)
-		_obj[i].loadObj(&dataNl);
+		_obj[i].loadObj(data);
 
 	for (int i = 0; i < MAXINVENTORY; ++i)
-		_inventoryObj[i].loadObj(&dataNl);
+		_inventoryObj[i].loadObj(data);
 
-	_soundMgr->loadSamples(&dataNl);
+	_soundMgr->loadSamples(data);
 
 	for (int i = 0; i < MAXSCRIPTFRAME; ++i) {
-		_scriptFrame[i]._class = dataNl.readByte();
-		_scriptFrame[i]._event = dataNl.readByte();
-		_scriptFrame[i]._u8Param = dataNl.readByte();
-		dataNl.readByte(); // Padding
-		_scriptFrame[i]._u16Param1 = dataNl.readUint16LE();
-		_scriptFrame[i]._u16Param2 = dataNl.readUint16LE();
-		_scriptFrame[i]._u32Param = dataNl.readUint16LE();
-		_scriptFrame[i]._noWait = !(dataNl.readSint16LE() == 0);
+		_scriptFrame[i]._class = data->readByte();
+		_scriptFrame[i]._event = data->readByte();
+		_scriptFrame[i]._u8Param = data->readByte();
+		data->readByte(); // Padding
+		_scriptFrame[i]._u16Param1 = data->readUint16();
+		_scriptFrame[i]._u16Param2 = data->readUint16();
+		_scriptFrame[i]._u32Param = data->readUint16();
+		_scriptFrame[i]._noWait = !(data->readSint16() == 0);
 	}
 
 	for (int i = 0; i < MAXSCRIPT; ++i) {
-		_scriptFirstFrame[i] = dataNl.readUint16LE();
-		dataNl.readByte(); // unused field
-		dataNl.readByte(); // Padding
+		_scriptFirstFrame[i] = data->readUint16();
+		data->readByte(); // unused field
+		data->readByte(); // Padding
 	}
 
-	_animMgr->loadAnimTab(&dataNl);
-	_dialogMgr->loadData(&dataNl);
+	_animMgr->loadAnimTab(data);
+	_dialogMgr->loadData(data);
 
-	dataNl.skip(620);	// actions (unused)
+	data->skip(620);	// actions (unused)
 
-	int numFileRef = dataNl.readSint32LE();
-	dataNl.skip(numFileRef * (12 + 4));	// fileRef name + offset
+	int numFileRef = data->readSint32();
+	data->skip(numFileRef * (12 + 4));	// fileRef name + offset
 
 	_textArea = new char[MAXTEXTAREA];
-	dataNl.read(_textArea, MAXTEXTAREA);
+	data->read(_textArea, MAXTEXTAREA);
 
 	_textPtr = _textArea;
 
@@ -99,6 +108,7 @@ void TrecisionEngine::loadAll() {
 	for (int a = 0; a < MAXSYSTEXT; a++)
 		_sysText[a] = getNextSentence();
 
+	delete data;
 	dataNl.close();
 }
 
@@ -115,7 +125,7 @@ byte *TrecisionEngine::readData(const Common::String &fileName) {
 }
 
 void TrecisionEngine::read3D(const Common::String &filename) {
-	Common::SeekableReadStream *ff = _dataFile.createReadStreamForMember(filename);
+	Common::SeekableReadStreamEndian *ff = readEndian(_dataFile.createReadStreamForMember(filename));
 	if (ff == nullptr)
 		error("read3D: Can't open 3D file %s", filename.c_str());
 
@@ -133,7 +143,7 @@ void TrecisionEngine::read3D(const Common::String &filename) {
 	_renderer->setClipping(0, TOP, MAXX, AREA + TOP);
 }
 
-void TrecisionEngine::readObject(Common::SeekableReadStream *stream, uint16 objIndex, uint16 objectId) {
+void TrecisionEngine::readObject(Common::SeekableReadStreamEndian *stream, uint16 objIndex, uint16 objectId) {
 	SObject *obj = &_obj[objectId];
 
 	if (obj->isModeFull()) {
@@ -143,7 +153,7 @@ void TrecisionEngine::readObject(Common::SeekableReadStream *stream, uint16 objI
 		delete[] _objPointers[objIndex];
 		_objPointers[objIndex] = new uint16[size];
 		for (uint32 i = 0; i < size; ++i)
-			_objPointers[objIndex][i] = stream->readUint16LE();
+			_objPointers[objIndex][i] = stream->readUint16();
 
 		_graphicsMgr->updatePixelFormat(_objPointers[objIndex], size);
 	}
@@ -151,15 +161,15 @@ void TrecisionEngine::readObject(Common::SeekableReadStream *stream, uint16 objI
 	if (obj->isModeMask()) {
 		obj->readRect(stream);
 
-		uint32 size = stream->readUint32LE();
+		uint32 size = stream->readUint32();
 		delete[] _objPointers[objIndex];
 		_objPointers[objIndex] = new uint16[size];
 		for (uint32 i = 0; i < size; ++i)
-			_objPointers[objIndex][i] = stream->readUint16LE();
+			_objPointers[objIndex][i] = stream->readUint16();
 
 		_graphicsMgr->updatePixelFormat(_objPointers[objIndex], size);
 
-		size = stream->readUint32LE();
+		size = stream->readUint32();
 		delete[] _maskPointers[objIndex];
 		_maskPointers[objIndex] = new uint8[size];
 		for (uint32 i = 0; i < size; ++i)
@@ -169,7 +179,7 @@ void TrecisionEngine::readObject(Common::SeekableReadStream *stream, uint16 objI
 	refreshObject(objectId);
 }
 
-void TrecisionEngine::readObj(Common::SeekableReadStream *stream) {
+void TrecisionEngine::readObj(Common::SeekableReadStreamEndian *stream) {
 	if (!_room[_curRoom]._object[0])
 		return;
 
@@ -192,7 +202,7 @@ void TrecisionEngine::readExtraObj2C() {
 	if (!_room[_curRoom]._object[32])
 		return;
 
-	Common::SeekableReadStream *ff = _dataFile.createReadStreamForMember("2c2.bm");
+	Common::SeekableReadStreamEndian *ff = readEndian(_dataFile.createReadStreamForMember("2c2.bm"));
 
 	for (uint16 objIndex = PATCHOBJ_ROOM2C; objIndex < MAXOBJINROOM; objIndex++) {
 		const uint16 objectId = _room[_curRoom]._object[objIndex];
@@ -209,7 +219,7 @@ void TrecisionEngine::readExtraObj41D() {
 	if (!_room[_curRoom]._object[32])
 		return;
 
-	Common::SeekableReadStream *ff = _dataFile.createReadStreamForMember("41d2.bm");
+	Common::SeekableReadStreamEndian *ff = readEndian(_dataFile.createReadStreamForMember("41d2.bm"));
 	for (uint16 objIndex = PATCHOBJ_ROOM41D; objIndex < MAXOBJINROOM; objIndex++) {
 		const uint16 objectId = _room[_curRoom]._object[objIndex];
 		if (!objectId)
diff --git a/engines/trecision/sound.cpp b/engines/trecision/sound.cpp
index a610f07197b..f6a5c97fcb5 100644
--- a/engines/trecision/sound.cpp
+++ b/engines/trecision/sound.cpp
@@ -266,13 +266,13 @@ void SoundManager::loadRoomSounds() {
 	}
 }
 
-void SoundManager::loadSamples(Common::File *file) {
+void SoundManager::loadSamples(Common::SeekableReadStreamEndian *stream) {
 	for (int i = 0; i < NUMSAMPLES; ++i) {
 		for (int j = 0; j < 14; j++)
-			_gSample[i]._name += file->readByte();
-		_gSample[i]._volume = file->readByte();
-		_gSample[i]._flag = file->readByte();
-		_gSample[i]._panning = file->readSByte();
+			_gSample[i]._name += stream->readByte();
+		_gSample[i]._volume = stream->readByte();
+		_gSample[i]._flag = stream->readByte();
+		_gSample[i]._panning = stream->readSByte();
 	}
 }
 
diff --git a/engines/trecision/sound.h b/engines/trecision/sound.h
index fc006c5911e..fd6bdb9c282 100644
--- a/engines/trecision/sound.h
+++ b/engines/trecision/sound.h
@@ -24,7 +24,7 @@
 #define TRECISION_SOUND_H
 
 #include "trecision/fastfile.h"
-#include "common/file.h"
+#include "common/stream.h"
 #include "audio/mixer.h"
 #include "audio/audiostream.h"
 
@@ -80,7 +80,7 @@ public:
 	int32 talkStart(const Common::String &name);
 	void loadRoomSounds();
 
-	void loadSamples(Common::File *file);
+	void loadSamples(Common::SeekableReadStreamEndian *stream);
 };
 
 
diff --git a/engines/trecision/struct.cpp b/engines/trecision/struct.cpp
index d06acf054cc..3f5a78d683d 100644
--- a/engines/trecision/struct.cpp
+++ b/engines/trecision/struct.cpp
@@ -24,17 +24,17 @@
 
 namespace Trecision {
 
-void SRoom::loadRoom(Common::File *file) {
-	file->read(&_baseName, 4);
-	_flag = file->readByte();
-	file->readByte(); // Padding
-	_bkgAnim = file->readUint16LE();
+void SRoom::loadRoom(Common::SeekableReadStreamEndian *stream) {
+	stream->read(&_baseName, 4);
+	_flag = stream->readByte();
+	stream->readByte(); // Padding
+	_bkgAnim = stream->readUint16();
 	for (int j = 0; j < MAXOBJINROOM; ++j)
-		_object[j] = file->readUint16LE();
+		_object[j] = stream->readUint16();
 	for (int j = 0; j < MAXSOUNDSINROOM; ++j)
-		_sounds[j] = file->readUint16LE();
+		_sounds[j] = stream->readUint16();
 	for (int j = 0; j < MAXACTIONINROOM; ++j)
-		_actions[j] = file->readUint16LE();
+		_actions[j] = stream->readUint16();
 }
 
 void SRoom::syncGameStream(Common::Serializer &ser) {
@@ -47,11 +47,11 @@ void SRoom::syncGameStream(Common::Serializer &ser) {
 
 /********************************************************************/
 
-void SObject::readRect(Common::SeekableReadStream *stream) {
-	_rect.left = stream->readUint16LE();
-	_rect.top = stream->readUint16LE();
-	_rect.setWidth(stream->readUint16LE());
-	_rect.setHeight(stream->readUint16LE());
+void SObject::readRect(Common::SeekableReadStreamEndian *stream) {
+	_rect.left = stream->readUint16();
+	_rect.top = stream->readUint16();
+	_rect.setWidth(stream->readUint16());
+	_rect.setHeight(stream->readUint16());
 }
 
 void SObject::syncGameStream(Common::Serializer &ser) {
@@ -71,31 +71,31 @@ void SObject::syncGameStream(Common::Serializer &ser) {
 	ser.syncAsSByte(_position);
 }
 
-void SObject::loadObj(Common::File *file) {
-	uint16 w = file->readUint16LE();
-	uint16 h = file->readUint16LE();
-	_rect.left = file->readUint16LE();
-	_rect.top = file->readUint16LE();
+void SObject::loadObj(Common::SeekableReadStreamEndian *stream) {
+	uint16 w = stream->readUint16();
+	uint16 h = stream->readUint16();
+	_rect.left = stream->readUint16();
+	_rect.top = stream->readUint16();
 	_rect.setWidth(w);
 	_rect.setHeight(h);
 
-	_lim.left = file->readUint16LE();
-	_lim.top = file->readUint16LE();
-	_lim.right = file->readUint16LE();
-	_lim.bottom = file->readUint16LE();
+	_lim.left = stream->readUint16();
+	_lim.top = stream->readUint16();
+	_lim.right = stream->readUint16();
+	_lim.bottom = stream->readUint16();
 
-	_position = file->readSByte();
-	file->readByte(); // Padding
-	_name = file->readUint16LE();
-	_examine = file->readUint16LE();
-	_action = file->readUint16LE();
-	_goRoom = file->readByte();
-	_nbox = file->readByte();
-	_ninv = file->readByte();
-	_mode = file->readByte();
-	_flag = file->readByte();
-	file->readByte(); // Padding
-	_anim = file->readUint16LE();
+	_position = stream->readSByte();
+	stream->readByte(); // Padding
+	_name = stream->readUint16();
+	_examine = stream->readUint16();
+	_action = stream->readUint16();
+	_goRoom = stream->readByte();
+	_nbox = stream->readByte();
+	_ninv = stream->readByte();
+	_mode = stream->readByte();
+	_flag = stream->readByte();
+	stream->readByte(); // Padding
+	_anim = stream->readUint16();
 }
 
 /********************************************************************/
@@ -108,13 +108,13 @@ void SInvObject::syncGameStream(Common::Serializer &ser) {
 	ser.syncAsByte(_flag);
 }
 
-void SInvObject::loadObj(Common::File *file) {
-	_name = file->readUint16LE();
-	_examine = file->readUint16LE();
-	_action = file->readUint16LE();
-	_flag = file->readByte();
-	file->readByte(); // Padding
-	_anim = file->readUint16LE();
+void SInvObject::loadObj(Common::SeekableReadStreamEndian *stream) {
+	_name = stream->readUint16();
+	_examine = stream->readUint16();
+	_action = stream->readUint16();
+	_flag = stream->readByte();
+	stream->readByte(); // Padding
+	_anim = stream->readUint16();
 }
 
 /********************************************************************/
diff --git a/engines/trecision/struct.h b/engines/trecision/struct.h
index 4265a7e70b0..93c98b1d04b 100644
--- a/engines/trecision/struct.h
+++ b/engines/trecision/struct.h
@@ -23,7 +23,7 @@
 #ifndef TRECISION_STRUCT_H
 #define TRECISION_STRUCT_H
 
-#include "common/file.h"
+#include "common/stream.h"
 #include "common/rect.h"
 #include "common/scummsys.h"
 #include "common/serializer.h"
@@ -45,7 +45,7 @@ struct SRoom {
 	void setDone(bool on) { if (on) _flag |= kObjFlagDone; else _flag &= ~kObjFlagDone; }
 
 	void syncGameStream(Common::Serializer &ser);
-	void loadRoom(Common::File *file);
+	void loadRoom(Common::SeekableReadStreamEndian *stream);
 
 private:
 	uint8 _flag = 0; // Room visited or not, extra or not
@@ -63,7 +63,7 @@ struct SObject {
 	uint8 _ninv;                            // ptr inventory
 	uint16 _anim;
 	
-	void readRect(Common::SeekableReadStream *stream);
+	void readRect(Common::SeekableReadStreamEndian *stream);
 	void setFlagDone(bool on) { if (on) _flag |= kObjFlagDone; else _flag &= ~kObjFlagDone; }
 	void setFlagExamine(bool on) { if (on) _flag |= kObjFlagExamine; else _flag &= ~kObjFlagExamine; }
 	void setFlagExtra(bool on) { if (on) _flag |= kObjFlagExtra; else _flag &= ~kObjFlagExtra; }
@@ -94,7 +94,7 @@ struct SObject {
 	void setModeStatus(bool on) { if (on) _mode |= OBJMODE_OBJSTATUS; else _mode &= ~OBJMODE_OBJSTATUS; }
 	
 	void syncGameStream(Common::Serializer &ser);
-	void loadObj(Common::File *file);
+	void loadObj(Common::SeekableReadStreamEndian *stream);
 
 private:
 	uint8 _flag = 0;
@@ -113,7 +113,7 @@ struct SInvObject {
 	bool isUseWith() { return _flag & kObjFlagUseWith; }
 
 	void syncGameStream(Common::Serializer &ser);
-	void loadObj(Common::File *file);
+	void loadObj(Common::SeekableReadStreamEndian *stream);
 
 private:
 	uint8 _flag = 0;
diff --git a/engines/trecision/trecision.cpp b/engines/trecision/trecision.cpp
index 3a5f2e0f62f..9e8afac5e13 100644
--- a/engines/trecision/trecision.cpp
+++ b/engines/trecision/trecision.cpp
@@ -233,10 +233,6 @@ Common::Error TrecisionEngine::run() {
 	return Common::kNoError;
 }
 
-bool TrecisionEngine::isDemo() const {
-	return _gameDescription->flags & ADGF_DEMO;
-}
-
 void TrecisionEngine::eventLoop() {
 	Common::Event event;
 	while (g_system->getEventManager()->pollEvent(event)) {
@@ -381,7 +377,7 @@ void TrecisionEngine::readLoc() {
 	_graphicsMgr->clearScreenBufferTop();
 
 	Common::String filename = Common::String::format("%s.cr", _room[_curRoom]._baseName);
-	Common::SeekableReadStream *picFile = _dataFile.createReadStreamForCompressedMember(filename);
+	Common::SeekableReadStreamEndian *picFile = readEndian(_dataFile.createReadStreamForCompressedMember(filename));
 
 	SObject bgInfo;
 	bgInfo.readRect(picFile);
@@ -432,7 +428,7 @@ void TrecisionEngine::redrawRoom() {
 	}
 
 	Common::String filename = Common::String::format("%s.cr", _room[_curRoom]._baseName);
-	Common::SeekableReadStream *picFile = _dataFile.createReadStreamForCompressedMember(filename);
+	Common::SeekableReadStreamEndian *picFile = readEndian(_dataFile.createReadStreamForCompressedMember(filename));
 
 	SObject bgInfo;
 	bgInfo.readRect(picFile);
diff --git a/engines/trecision/trecision.h b/engines/trecision/trecision.h
index c5fc1c5ff27..cec8a6f2dae 100644
--- a/engines/trecision/trecision.h
+++ b/engines/trecision/trecision.h
@@ -27,6 +27,7 @@
 #include "common/keyboard.h"
 #include "common/str.h"
 #include "common/serializer.h"
+#include "common/stream.h"
 #include "engines/advancedDetector.h"
 #include "engines/engine.h"
 #include "graphics/surface.h"
@@ -134,8 +135,8 @@ class TrecisionEngine : public Engine {
 	bool canPlayerInteract();
 
 	// Objects
-	void readObj(Common::SeekableReadStream *stream);
-	void readObject(Common::SeekableReadStream *stream, uint16 objIndex, uint16 objectId);
+	void readObj(Common::SeekableReadStreamEndian *stream);
+	void readObject(Common::SeekableReadStreamEndian *stream, uint16 objIndex, uint16 objectId);
 
 	char *_textArea;
 	uint16 _curScriptFrame[10];
@@ -154,7 +155,7 @@ public:
 
 	// ScummVM
 	Common::Error run() override;
-	bool isDemo() const;
+	bool isDemo() const { return _gameDescription->flags & ADGF_DEMO; }
 	bool hasFeature(EngineFeature f) const override;
 	bool canLoadGameStateCurrently() override { return canPlayerInteract() && _curRoom != kRoomIntro; }
 	bool canSaveGameStateCurrently() override { return canPlayerInteract() && _curRoom != kRoomIntro; }
@@ -163,6 +164,7 @@ public:
 	bool syncGameStream(Common::Serializer &ser);
 
 	// Data files
+	Common::SeekableReadStreamEndian *readEndian(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeParentStream = DisposeAfterUse::YES);
 	void read3D(const Common::String &c);
 
 	// Inventory
diff --git a/engines/trecision/video.cpp b/engines/trecision/video.cpp
index 55086b06c76..96ed763cc21 100644
--- a/engines/trecision/video.cpp
+++ b/engines/trecision/video.cpp
@@ -551,27 +551,27 @@ void AnimManager::syncGameStream(Common::Serializer &ser) {
 	}
 }
 
-void AnimManager::loadAnimTab(Common::File *file) {
+void AnimManager::loadAnimTab(Common::SeekableReadStreamEndian *stream) {
 	for (uint16 i = 0; i < MAXANIM; ++i) {
-		file->read(&_animTab[i]._name, 14);
+		stream->read(&_animTab[i]._name, 14);
 
-		_animTab[i]._flag = file->readUint16LE();
+		_animTab[i]._flag = stream->readUint16();
 
 		for (uint8 j = 0; j < MAXCHILD; ++j) {
-			_animTab[i]._lim[j].left = file->readUint16LE();
-			_animTab[i]._lim[j].top = file->readUint16LE();
-			_animTab[i]._lim[j].right = file->readUint16LE();
-			_animTab[i]._lim[j].bottom = file->readUint16LE();
+			_animTab[i]._lim[j].left = stream->readUint16();
+			_animTab[i]._lim[j].top = stream->readUint16();
+			_animTab[i]._lim[j].right = stream->readUint16();
+			_animTab[i]._lim[j].bottom = stream->readUint16();
 		}
 
-		_animTab[i]._nbox = file->readByte();
-		file->readByte(); // Padding
+		_animTab[i]._nbox = stream->readByte();
+		stream->readByte(); // Padding
 
 		for (uint8 j = 0; j < MAXATFRAME; ++j) {
-			_animTab[i]._atFrame[j]._type = file->readByte();
-			_animTab[i]._atFrame[j]._child = file->readByte();
-			_animTab[i]._atFrame[j]._numFrame = file->readUint16LE();
-			_animTab[i]._atFrame[j]._index = file->readUint16LE();
+			_animTab[i]._atFrame[j]._type = stream->readByte();
+			_animTab[i]._atFrame[j]._child = stream->readByte();
+			_animTab[i]._atFrame[j]._numFrame = stream->readUint16();
+			_animTab[i]._atFrame[j]._index = stream->readUint16();
 		}
 	}
 }
diff --git a/engines/trecision/video.h b/engines/trecision/video.h
index d414dc80446..4807fcfb7eb 100644
--- a/engines/trecision/video.h
+++ b/engines/trecision/video.h
@@ -23,7 +23,7 @@
 #ifndef TRECISION_VIDEO_H
 #define TRECISION_VIDEO_H
 
-#include "common/file.h"
+#include "common/stream.h"
 #include "common/serializer.h"
 #include "video/smk_decoder.h"
 
@@ -110,7 +110,7 @@ public:
 	void stopAllSmkAnims();
 
 	void syncGameStream(Common::Serializer &ser);
-	void loadAnimTab(Common::File *file);
+	void loadAnimTab(Common::SeekableReadStreamEndian *stream);
 };
 } // End of namespace Trecision
 #endif