Initial commit

audio/soundfont/vgmsamp.cpp

@@ -0,0 +1,119 @@
+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+/*
+ * VGMTrans (c) 2002-2019
+ * Licensed under the zlib license,
+ * refer to the included VGMTrans_LICENSE.txt file
+ */
+
+#include "vgmsamp.h"
+
+// *******
+// VGMSamp
+// *******
+
+VGMSamp::VGMSamp(VGMSampColl *sampColl, uint32 offset, uint32 length, uint32 dataOffset,
+				 uint32 dataLen, uint8 nChannels, uint16 theBPS, uint32 theRate,
+				 Common::String theName)
+		: _parSampColl(sampColl),
+		  _sampName(theName),
+		  VGMItem(sampColl->_vgmfile, offset, length),
+		  _dataOff(dataOffset),
+		  _dataLength(dataLen),
+		  _bps(theBPS),
+		  _rate(theRate),
+		  _ulUncompressedSize(0),
+		  _channels(nChannels),
+		  _unityKey(-1),
+		  _fineTune(0),
+		  _volume(-1),
+		  _waveType(WT_UNDEFINED),
+		  _bPSXLoopInfoPrioritizing(false) {
+	_name = _sampName;  // I would do this in the initialization list, but VGMItem()
+	// constructor is called before sampName is initialized,
+	// so data() ends up returning a bad pointer
+}
+
+VGMSamp::~VGMSamp() {}
+
+double VGMSamp::GetCompressionRatio() {
+	return 1.0;
+}
+
+// ***********
+// VGMSampColl
+// ***********
+
+VGMSampColl::VGMSampColl(RawFile *rawfile, uint32 offset, uint32 length,
+						 Common::String theName)
+		: VGMFile(rawfile, offset, length, theName),
+		  _parInstrSet(nullptr),
+		  _bLoaded(false),
+		  _sampDataOffset(0) {
+	AddContainer<VGMSamp>(_samples);
+}
+
+VGMSampColl::VGMSampColl(RawFile *rawfile, VGMInstrSet *instrset,
+						 uint32 offset, uint32 length, Common::String theName)
+		: VGMFile(rawfile, offset, length, theName),
+		  _parInstrSet(instrset),
+		  _bLoaded(false),
+		  _sampDataOffset(0) {
+	AddContainer<VGMSamp>(_samples);
+}
+
+VGMSampColl::~VGMSampColl(void) {
+	DeleteVect<VGMSamp>(_samples);
+}
+
+bool VGMSampColl::Load() {
+	if (_bLoaded)
+		return true;
+	if (!GetHeaderInfo())
+		return false;
+	if (!GetSampleInfo())
+		return false;
+
+	if (_samples.size() == 0)
+		return false;
+
+	if (_unLength == 0) {
+		for (auto &samp : _samples) {
+			// Some formats can have negative sample offset
+			// For example, Konami's SNES format and Hudson's SNES format
+			// TODO: Fix negative sample offset without breaking instrument
+			// assert(dwOffset <= samp->dwOffset);
+
+			// if (dwOffset > samp->dwOffset)
+			//{
+			//	unLength += samp->dwOffset - dwOffset;
+			//	dwOffset = samp->dwOffset;
+			//}
+
+			if (_dwOffset + _unLength < samp->_dwOffset + samp->_unLength) {
+				_unLength = (samp->_dwOffset + samp->_unLength) - _dwOffset;
+			}
+		}
+	}
+
+	_bLoaded = true;
+	return true;
+}