IMAGE: Inline indeo getVLC2

5 files changed, 51 insertions, 82 deletions

diff --git a/image/codecs/indeo/get_bits.cpp b/image/codecs/indeo/get_bits.cpp
deleted file mode 100644
index f808a96e76..0000000000
--- a/image/codecs/indeo/get_bits.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-/* ScummVM - Graphic Adventure Engine
- *
- * ScummVM is the legal property of its developers, whose names
- * are too numerous to list here. Please refer to the COPYRIGHT
- * file distributed with this source distribution.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- */
-
-#include "image/codecs/indeo/get_bits.h"
-
-namespace Image {
-namespace Indeo {
-
-int GetBits::getVLC2(int16 (*table)[2], int bits, int maxDepth) {
-	int code;
-	int n, nbBits;
-	unsigned int index;
-
-	index = peekBits(bits);
-	code  = table[index][0];
-	n     = table[index][1];
-
-	if (maxDepth > 1 && n < 0) {
-		skip(bits);
-		nbBits = -n;
-
-		index = peekBits(nbBits) + code;
-		code = table[index][0];
-		n = table[index][1];
-
-		if (maxDepth > 2 && n < 0) {
-			skip(nbBits);
-			nbBits = -n;
-
-			index = peekBits(nbBits) + code;
-			code = table[index][0];
-			n = table[index][1];
-		}
-	}
-
-	skip(n);
-	return code;
-}
-
-} // End of namespace Indeo
-} // End of namespace Image
diff --git a/image/codecs/indeo/get_bits.h b/image/codecs/indeo/get_bits.h
index 359d8fcab0..c2d593bfb5 100644
--- a/image/codecs/indeo/get_bits.h
+++ b/image/codecs/indeo/get_bits.h
@@ -54,7 +54,37 @@ public:
 	 *                  read the longest vlc code
 	 *                  = (max_vlc_length + bits - 1) / bits
 	 */
-	int getVLC2(int16 (*table)[2], int bits, int maxDepth);
+	template <int maxDepth>
+	int getVLC2(int16 (*table)[2], int bits) {
+		int code;
+		int n, nbBits;
+		unsigned int index;
+
+		index = peekBits(bits);
+		code  = table[index][0];
+		n     = table[index][1];
+
+		if (maxDepth > 1 && n < 0) {
+			skip(bits);
+			nbBits = -n;
+
+			index = peekBits(nbBits) + code;
+			code = table[index][0];
+			n = table[index][1];
+
+			if (maxDepth > 2 && n < 0) {
+				skip(nbBits);
+				nbBits = -n;
+
+				index = peekBits(nbBits) + code;
+				code = table[index][0];
+				n = table[index][1];
+			}
+		}
+
+		skip(n);
+		return code;
+	}
 };
 
 } // End of namespace Indeo
diff --git a/image/codecs/indeo/indeo.cpp b/image/codecs/indeo/indeo.cpp
index 769790b76f..f420069139 100644
--- a/image/codecs/indeo/indeo.cpp
+++ b/image/codecs/indeo/indeo.cpp
@@ -1258,16 +1258,15 @@ int IndeoDecoderBase::decodeCodedBlocks(GetBits *gb, IVIBandDesc *band,
 	// zero column flags
 	memset(colFlags, 0, sizeof(colFlags));
 	while (scanPos <= numCoeffs) {
-		sym = gb->getVLC2(band->_blkVlc._tab->_table,
-			IVI_VLC_BITS, 1);
+		sym = gb->getVLC2<1>(band->_blkVlc._tab->_table, IVI_VLC_BITS);
 		if (sym == rvmap->_eobSym)
 			break; // End of block
 
 		// Escape - run/val explicitly coded using 3 vlc codes
 		if (sym == rvmap->_escSym) {
-			run = gb->getVLC2(band->_blkVlc._tab->_table, IVI_VLC_BITS, 1) + 1;
-			lo = gb->getVLC2(band->_blkVlc._tab->_table, IVI_VLC_BITS, 1);
-			hi = gb->getVLC2(band->_blkVlc._tab->_table, IVI_VLC_BITS, 1);
+			run = gb->getVLC2<1>(band->_blkVlc._tab->_table, IVI_VLC_BITS) + 1;
+			lo = gb->getVLC2<1>(band->_blkVlc._tab->_table, IVI_VLC_BITS);
+			hi = gb->getVLC2<1>(band->_blkVlc._tab->_table, IVI_VLC_BITS);
 			// merge them and convert into signed val
 			val = IVI_TOSIGNED((hi << 6) | lo);
 		} else {
diff --git a/image/codecs/indeo4.cpp b/image/codecs/indeo4.cpp
index b6ac0882e7..4658068b27 100644
--- a/image/codecs/indeo4.cpp
+++ b/image/codecs/indeo4.cpp
@@ -484,8 +484,8 @@ int Indeo4Decoder::decodeMbInfo(IVIBandDesc *band, IVITile *tile) {
 
 				mb->_qDelta = 0;
 				if (!band->_plane && !band->_bandNum && _ctx._inQ) {
-					mb->_qDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table,
-						IVI_VLC_BITS, 1);
+					mb->_qDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table,
+						IVI_VLC_BITS);
 					mb->_qDelta = IVI_TOSIGNED(mb->_qDelta);
 				}
 
@@ -522,8 +522,8 @@ int Indeo4Decoder::decodeMbInfo(IVIBandDesc *band, IVITile *tile) {
 					if (refMb) mb->_qDelta = refMb->_qDelta;
 				} else if (mb->_cbp || (!band->_plane && !band->_bandNum &&
 					_ctx._inQ)) {
-					mb->_qDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table,
-						IVI_VLC_BITS, 1);
+					mb->_qDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table,
+						IVI_VLC_BITS);
 					mb->_qDelta = IVI_TOSIGNED(mb->_qDelta);
 				}
 
@@ -543,22 +543,22 @@ int Indeo4Decoder::decodeMbInfo(IVIBandDesc *band, IVITile *tile) {
 						}
 					} else {
 						// decode motion vector deltas
-						mvDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table,
-							IVI_VLC_BITS, 1);
+						mvDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table,
+							IVI_VLC_BITS);
 						mvY += IVI_TOSIGNED(mvDelta);
-						mvDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table,
-							IVI_VLC_BITS, 1);
+						mvDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table,
+							IVI_VLC_BITS);
 						mvX += IVI_TOSIGNED(mvDelta);
 						mb->_mvX = mvX;
 						mb->_mvY = mvY;
 						if (mb->_type == 3) {
-							mvDelta = _ctx._gb->getVLC2(
+							mvDelta = _ctx._gb->getVLC2<1>(
 								_ctx._mbVlc._tab->_table,
-								IVI_VLC_BITS, 1);
+								IVI_VLC_BITS);
 							mvY += IVI_TOSIGNED(mvDelta);
-							mvDelta = _ctx._gb->getVLC2(
+							mvDelta = _ctx._gb->getVLC2<1>(
 								_ctx._mbVlc._tab->_table,
-								IVI_VLC_BITS, 1);
+								IVI_VLC_BITS);
 							mvX += IVI_TOSIGNED(mvDelta);
 							mb->_bMvX = -mvX;
 							mb->_bMvY = -mvY;
diff --git a/image/codecs/indeo5.cpp b/image/codecs/indeo5.cpp
index aca49c3d55..858c634704 100644
--- a/image/codecs/indeo5.cpp
+++ b/image/codecs/indeo5.cpp
@@ -299,7 +299,7 @@ int Indeo5Decoder::decodeMbInfo(IVIBandDesc *band, IVITile *tile) {
 
 				mb->_qDelta = 0;
 				if (!band->_plane && !band->_bandNum && (_ctx._frameFlags & 8)) {
-					mb->_qDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table, IVI_VLC_BITS, 1);
+					mb->_qDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table, IVI_VLC_BITS);
 					mb->_qDelta = IVI_TOSIGNED(mb->_qDelta);
 				}
 
@@ -332,7 +332,7 @@ int Indeo5Decoder::decodeMbInfo(IVIBandDesc *band, IVITile *tile) {
 						if (refMb) mb->_qDelta = refMb->_qDelta;
 					} else if (mb->_cbp || (!band->_plane && !band->_bandNum &&
 						(_ctx._frameFlags & 8))) {
-						mb->_qDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table, IVI_VLC_BITS, 1);
+						mb->_qDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table, IVI_VLC_BITS);
 						mb->_qDelta = IVI_TOSIGNED(mb->_qDelta);
 					}
 				}
@@ -351,9 +351,9 @@ int Indeo5Decoder::decodeMbInfo(IVIBandDesc *band, IVITile *tile) {
 						}
 					} else {
 						// decode motion vector deltas
-						mvDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table, IVI_VLC_BITS, 1);
+						mvDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table, IVI_VLC_BITS);
 						mvY += IVI_TOSIGNED(mvDelta);
-						mvDelta = _ctx._gb->getVLC2(_ctx._mbVlc._tab->_table, IVI_VLC_BITS, 1);
+						mvDelta = _ctx._gb->getVLC2<1>(_ctx._mbVlc._tab->_table, IVI_VLC_BITS);
 						mvX += IVI_TOSIGNED(mvDelta);
 						mb->_mvX = mvX;
 						mb->_mvY = mvY;