From 84784add6811aa1b285b70e139d0bdf9738c858c Mon Sep 17 00:00:00 2001
From: Kamil Zbróg
Date: Mon, 28 Oct 2013 00:06:21 +0000
Subject: PRINCE: midi music player added. mob and object lists added

---
 engines/prince/sound.cpp | 160 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 160 insertions(+)
 create mode 100644 engines/prince/sound.cpp

(limited to 'engines/prince/sound.cpp')

diff --git a/engines/prince/sound.cpp b/engines/prince/sound.cpp
new file mode 100644
index 0000000000..2e2e53e664
--- /dev/null
+++ b/engines/prince/sound.cpp
@@ -0,0 +1,160 @@
+/* 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.
+ *
+ */
+
+/*
+ * This code is based on original Soltys source code
+ * Copyright (c) 1994-1995 Janus B. Wisniewski and L.K. Avalon
+ */
+
+#include "prince/prince.h"
+#include "prince/sound.h"
+#include "common/config-manager.h"
+#include "common/memstream.h"
+#include "common/archive.h"
+#include "audio/decoders/raw.h"
+#include "audio/audiostream.h"
+
+namespace Prince {
+
+const char * MusicPlayer::_musTable[] = {
+    "",
+	"Battlfld.mid",
+	"Cave.mid",
+	"Cemetery.mid",
+	"Credits.mid",
+	"Fjord.mid",
+	"Guitar.mid",
+	"Hell.mid",
+	"Jingle.mid",
+	"Main.mid",
+	"Night.mid",
+	"Reality.mid",
+	"Sunlord.mid",
+	"Tavern.mid",
+	"Temple.mid",
+	"Boruta.mid",
+	"Intro.mid"
+};
+
+const uint8 MusicPlayer::_musRoomTable[] = {
+    0,
+    3,
+    9,
+    9,
+    9,
+    13,
+    9,
+    9 
+};
+
+
+MusicPlayer::MusicPlayer(PrinceEngine *vm) : _vm(vm) {
+	_data = NULL;
+	_isGM = false;
+
+	MidiPlayer::createDriver();
+
+	int ret = _driver->open();
+	if (ret == 0) {
+		if (_nativeMT32)
+			_driver->sendMT32Reset();
+		else
+			_driver->sendGMReset();
+
+		// TODO: Load cmf.ins with the instrument table.  It seems that an
+		// interface for such an operation is supported for AdLib.  Maybe for
+		// this card, setting instruments is necessary.
+
+		_driver->setTimerCallback(this, &timerCallback);
+	}
+}
+
+MusicPlayer::~MusicPlayer() {
+	killMidi();
+}
+
+void MusicPlayer::killMidi() {
+	Audio::MidiPlayer::stop();
+
+	free(_data);
+	_data = NULL;
+}
+
+void MusicPlayer::loadMidi(const char * name) {
+    Common::SeekableReadStream * stream = SearchMan.createReadStreamForMember(name);
+    if (!stream)
+		return;
+
+	// Stop any currently playing MIDI file
+	killMidi();
+
+	// Read in the data for the file
+	_dataSize = stream->size();
+	_data = (byte *)malloc(_dataSize);
+    stream->read(_data, _dataSize);
+
+	// Start playing the music
+	sndMidiStart();
+}
+
+void MusicPlayer::sndMidiStart() {
+	_isGM = true;
+
+	MidiParser *parser = MidiParser::createParser_SMF();
+	if (parser->loadMusic(_data, _dataSize)) {
+		parser->setTrack(0);
+		parser->setMidiDriver(this);
+		parser->setTimerRate(_driver->getBaseTempo());
+		parser->property(MidiParser::mpCenterPitchWheelOnUnload, 1);
+
+		_parser = parser;
+
+		syncVolume();
+
+		// Al the tracks are supposed to loop
+		_isLooping = true;
+		_isPlaying = true;
+	}
+}
+
+void MusicPlayer::send(uint32 b) {
+	if ((b & 0xF0) == 0xC0 && !_isGM && !_nativeMT32) {
+		b = (b & 0xFFFF00FF) | MidiDriver::_mt32ToGm[(b >> 8) & 0xFF] << 8;
+	}
+
+	Audio::MidiPlayer::send(b);
+}
+
+void MusicPlayer::sendToChannel(byte channel, uint32 b) {
+	if (!_channelsTable[channel]) {
+		_channelsTable[channel] = (channel == 9) ? _driver->getPercussionChannel() : _driver->allocateChannel();
+		// If a new channel is allocated during the playback, make sure
+		// its volume is correctly initialized.
+		if (_channelsTable[channel])
+			_channelsTable[channel]->volume(_channelsVolume[channel] * _masterVolume / 255);
+	}
+
+	if (_channelsTable[channel])
+		_channelsTable[channel]->send(b);
+}
+
+} // End of namespace CGE
-- 
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