5 files changed, 34 insertions, 33 deletions

diff --git a/scumm/intern.h b/scumm/intern.h
index 089270a3d3..45ff6e8399 100644
--- a/scumm/intern.h
+++ b/scumm/intern.h
@@ -812,6 +812,7 @@ protected:
 	byte *heFindResource(uint32 tag, byte *ptr);
 	byte *findWrappedBlock(uint32 tag, byte *ptr, int state, bool flagError);
 	int findObject(int x, int y, int num, int *args);
+	int getSoundResourceSize(int id);
 
 	/* HE version 72 script opcodes */
 	void o72_pushDWord();
diff --git a/scumm/resource_v7he.cpp b/scumm/resource_v7he.cpp
index 52e92518b5..d5a2a1bc8f 100644
--- a/scumm/resource_v7he.cpp
+++ b/scumm/resource_v7he.cpp
@@ -28,6 +28,7 @@
 #include "scumm/intern.h"
 #include "scumm/resource.h"
 #include "scumm/resource_v7he.h"
+#include "scumm/sound.h"
 #include "scumm/util.h"
 
 #include "common/stream.h"
@@ -1753,4 +1754,32 @@ byte *ScummEngine_v72he::getStringAddress(int i) {
 	return ((ScummEngine_v72he::ArrayHeader *)addr)->data;
 }
 
+int ScummEngine_v72he::getSoundResourceSize(int id) {
+	const byte *ptr;
+	int offs, size;
+
+	if (id > _numSounds) {
+		_sound->getHEMusicDetails(id, offs, size);
+	} else {
+		ptr = getResourceAddress(rtSound, id);
+		if (!ptr)
+			return 0;
+
+		if (READ_UINT32(ptr) == MKID('HSHD')) {
+			ptr += READ_BE_UINT32(ptr + 4);
+		} else {
+			ptr += 8 + READ_BE_UINT32(ptr + 12);
+		}
+
+		if (READ_UINT32(ptr) == MKID('SBNG')) {
+			ptr += READ_BE_UINT32(ptr + 4);
+		}
+
+		assert(READ_UINT32(ptr) == MKID('SDAT'));
+		size = READ_BE_UINT32(ptr + 4) - 8;
+	}
+
+	return size;
+}
+
 } // End of namespace Scumm
diff --git a/scumm/script_v100he.cpp b/scumm/script_v100he.cpp
index 1494cdc40f..c0939cc947 100644
--- a/scumm/script_v100he.cpp
+++ b/scumm/script_v100he.cpp
@@ -2211,16 +2211,7 @@ void ScummEngine_v100he::o100_getResourceSize() {
 		type = rtScript;
 		break;
 	case 72:
-		if (resid > _numSounds) {
-			int offs;
-			_sound->getHEMusicDetails(resid, offs, size);
-			push(size);
-		} else {
-			ptr = getResourceAddress(rtSound, resid);
-			assert(ptr);
-			size = READ_BE_UINT32(ptr + 4) - 40;
-			push(size);
-		}
+		push (getSoundResourceSize(resid));
 		return;
 	default:
 		error("o100_getResourceSize: default type %d", subOp);
diff --git a/scumm/script_v72he.cpp b/scumm/script_v72he.cpp
index b20716e850..a60ed8abe5 100644
--- a/scumm/script_v72he.cpp
+++ b/scumm/script_v72he.cpp
@@ -2156,19 +2156,8 @@ void ScummEngine_v72he::o72_writeINI() {
 }
 
 void ScummEngine_v72he::o72_getResourceSize() {
-	int resid, size;
-
-	resid = pop();
-	if (resid > _numSounds) {
-		int offs;
-		_sound->getHEMusicDetails(resid, offs, size);
-		push(size);
-	} else {
-		const byte *ptr = getResourceAddress(rtSound, resid);
-		assert(ptr);
-		size = READ_BE_UINT32(ptr + 4) - 40;
-		push(size);
-	}
+	int resid = pop();
+	push(getSoundResourceSize(resid));
 }
 
 void ScummEngine_v72he::o72_setFilePath() {
diff --git a/scumm/script_v80he.cpp b/scumm/script_v80he.cpp
index 8e523d90dc..482315f47b 100644
--- a/scumm/script_v80he.cpp
+++ b/scumm/script_v80he.cpp
@@ -814,16 +814,7 @@ void ScummEngine_v80he::o80_getResourceSize() {
 
 	switch (subOp) {
 	case 13:
-		if (resid > _numSounds) {
-			int offs;
-			_sound->getHEMusicDetails(resid, offs, size);
-			push(size);
-		} else {
-			ptr = getResourceAddress(rtSound, resid);
-			assert(ptr);
-			size = READ_BE_UINT32(ptr + 4) - 40;
-			push(size);
-		}
+		push (getSoundResourceSize(resid));
 		return;
 	case 14:
 		type = rtRoomImage;