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audio/soundfont/vgmsamp.h

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+/* 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
+ */
+#ifndef AUDIO_SOUNDFONT_VGMSAMP_H
+#define AUDIO_SOUNDFONT_VGMSAMP_H
+
+#include "audio/soundfont/common.h"
+#include "common/scummsys.h"
+#include "common/str.h"
+#include "audio/soundfont/vgmitem.h"
+
+class VGMSampColl;
+class VGMInstrSet;
+
+enum WAVE_TYPE {
+	WT_UNDEFINED, WT_PCM8, WT_PCM16
+};
+
+class VGMSamp : public VGMItem {
+public:
+
+	VGMSamp(VGMSampColl *sampColl, uint32 offset = 0, uint32 length = 0,
+			uint32 dataOffset = 0, uint32 dataLength = 0, uint8 channels = 1,
+			uint16 bps = 16, uint32 rate = 0, Common::String name = "Sample");
+	virtual ~VGMSamp();
+
+	virtual double GetCompressionRatio();  // ratio of space conserved.  should generally be > 1
+	// used to calculate both uncompressed sample size and loopOff after conversion
+	virtual void ConvertToStdWave(uint8 *buf) {};
+
+	inline void SetLoopStatus(int loopStat) { _loop.loopStatus = loopStat; }
+	inline void SetLoopOffset(uint32 loopStart) { _loop.loopStart = loopStart; }
+	inline void SetLoopLength(uint32 theLoopLength) { _loop.loopLength = theLoopLength; }
+
+public:
+	WAVE_TYPE _waveType;
+	uint32 _dataOff;  // offset of original sample data
+	uint32 _dataLength;
+	uint16 _bps;      // bits per sample
+	uint32 _rate;     // sample rate in herz (samples per second)
+	uint8 _channels;  // mono or stereo?
+	uint32 _ulUncompressedSize;
+
+	bool _bPSXLoopInfoPrioritizing;
+	Loop _loop;
+
+	int8 _unityKey;
+	short _fineTune;
+	double _volume;  // as percent of full volume.  This will be converted to attenuation for SynthFile
+
+	VGMSampColl *_parSampColl;
+	Common::String _sampName;
+};
+
+class VGMSampColl : public VGMFile {
+public:
+	VGMSampColl(RawFile *rawfile, uint32 offset, uint32 length = 0,
+				Common::String theName = "VGMSampColl");
+	VGMSampColl(RawFile *rawfile, VGMInstrSet *instrset, uint32 offset,
+				uint32 length = 0, Common::String theName = "VGMSampColl");
+	virtual ~VGMSampColl(void);
+
+	virtual bool Load();
+	virtual bool GetHeaderInfo() { return true; }  // retrieve any header data
+	virtual bool GetSampleInfo() { return true; }  // retrieve sample info, including pointers to data, # channels, rate, etc.
+
+protected:
+
+public:
+	bool _bLoaded;
+
+	uint32 _sampDataOffset;  // offset of the beginning of the sample data.  Used for
+	// rgn->sampOffset matching
+	VGMInstrSet *_parInstrSet;
+	Common::Array<VGMSamp *> _samples;
+};
+
+#endif // AUDIO_SOUNDFONT_VGMSAMP_H