Initial commit

audio/mods/module.h

@@ -0,0 +1,90 @@
+/* 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/>.
+ *
+ */
+
+#ifndef AUDIO_MODS_MODULE_H
+#define AUDIO_MODS_MODULE_H
+
+#include "common/scummsys.h"
+
+namespace Common {
+class SeekableReadStream;
+}
+
+namespace Modules {
+
+#include "common/pack-start.h"	// START STRUCT PACKING
+
+struct note_t {
+	byte sample;
+	byte note;
+	uint16 period;
+	uint16 effect;
+} PACKED_STRUCT;
+
+#include "common/pack-end.h"	// END STRUCT PACKING
+
+typedef note_t pattern_t[64][4];
+
+struct sample_t {
+	byte name[23];
+	uint16 len;
+	byte finetune;
+	byte vol;
+	uint16 repeat;
+	uint16 replen;
+	int8 *data;
+};
+
+struct sample_offs {
+	byte name[23];
+	uint16 len;
+	uint32 offs;
+};
+
+class Module {
+public:
+	byte songname[21];
+
+	static const int NUM_SAMPLES = 31;
+	sample_t sample[NUM_SAMPLES];
+	sample_offs commonSamples[NUM_SAMPLES];
+
+	byte songlen;
+	byte undef;
+	byte songpos[128];
+	uint32 sig;
+	pattern_t *pattern;
+
+	Module();
+	virtual ~Module();
+
+	virtual bool load(Common::SeekableReadStream &stream, int offs);
+	static byte periodToNote(int16 period, byte finetune = 0);
+	static int16 noteToPeriod(byte note, byte finetune = 0);
+
+protected:
+	static const int16 periods[16][60];
+	static const uint32 signatures[];
+};
+
+} // End of namespace Modules
+
+#endif