From 11870c414460d8c9ea70651a979b1842e58569e5 Mon Sep 17 00:00:00 2001
From: Strangerke
Date: Mon, 1 Dec 2014 14:07:09 +0100
Subject: ACCESS: Implement music player (WIP)

---
 engines/access/amazon/amazon_logic.cpp |  2 +-
 engines/access/room.cpp                |  2 +-
 engines/access/sound.cpp               | 84 ++++++++++++++++++++++++++++++----
 engines/access/sound.h                 | 12 +++--
 4 files changed, 84 insertions(+), 16 deletions(-)

diff --git a/engines/access/amazon/amazon_logic.cpp b/engines/access/amazon/amazon_logic.cpp
index c330429ee6..de497c2a35 100644
--- a/engines/access/amazon/amazon_logic.cpp
+++ b/engines/access/amazon/amazon_logic.cpp
@@ -353,7 +353,7 @@ void Opening::doTitle() {
 	}
 
 	_vm->_midi->newMusic(1, 1);
-	_vm->_midi->_musicRepeat = false;
+	_vm->_midi->setLoop(false);
 	_vm->_events->zeroKeys();
 	_vm->_room->loadRoom(0);
 	_vm->_screen->clearScreen();
diff --git a/engines/access/room.cpp b/engines/access/room.cpp
index 8ef61a9d68..a5873b2c38 100644
--- a/engines/access/room.cpp
+++ b/engines/access/room.cpp
@@ -184,7 +184,7 @@ void Room::loadRoomData(const byte *roomData) {
 	if (roomInfo._musicFile._fileNum != -1) {
 		_vm->_midi->loadMusic(roomInfo._musicFile);
 		_vm->_midi->midiPlay();
-		_vm->_midi->_musicRepeat = true;
+		_vm->_midi->setLoop(true);
 	}
 
 	_vm->_scaleH1 = roomInfo._scaleH1;
diff --git a/engines/access/sound.cpp b/engines/access/sound.cpp
index 316ac54d42..2d38a2c6bc 100644
--- a/engines/access/sound.cpp
+++ b/engines/access/sound.cpp
@@ -147,7 +147,20 @@ void SoundManager::freeSounds() {
 MusicManager::MusicManager(AccessEngine *vm, Audio::Mixer *mixer) : _vm(vm), _mixer(mixer) {
 	_music = nullptr;
 	_tempMusic = nullptr;
-	_musicRepeat = false;
+	_isLooping = false;
+
+	MidiPlayer::createDriver();
+	MidiDriver::detectDevice(MDT_MIDI | MDT_ADLIB | MDT_PREFER_GM);
+
+	int retValue = _driver->open();
+	if (retValue == 0) {
+		if (_nativeMT32)
+			_driver->sendMT32Reset();
+		else
+			_driver->sendGMReset();
+
+		_driver->setTimerCallback(this, &timerCallback);
+	}
 }
 
 MusicManager::~MusicManager() {
@@ -155,46 +168,92 @@ MusicManager::~MusicManager() {
 	delete _tempMusic;
 }
 
+void MusicManager::send(uint32 b) {
+	if ((b & 0xF0) == 0xC0 && !_nativeMT32) {
+		b = (b & 0xFFFF00FF) | MidiDriver::_mt32ToGm[(b >> 8) & 0xFF] << 8;
+	}
+
+	Audio::MidiPlayer::send(b);
+}
+
 void MusicManager::midiPlay() {
-	// TODO
+	warning("MusicManager::midiPlay");
+	if (_music->_size < 4) {
+		error("midiPlay() wrong music resource size");
+	}
+
+	if (READ_BE_UINT32(_music->data()) != MKTAG('F', 'O', 'R', 'M'))
+		error("midiPlay() Unexpected signature");
+
+	stop();
+
+	_parser = MidiParser::createParser_XMIDI();
+
+	if (!_parser->loadMusic(_music->data(), _music->_size))
+		error("midiPlay() wrong music resource");
+
+	_parser->setTrack(0);
+	_parser->setMidiDriver(this);
+	_parser->setTimerRate(_driver->getBaseTempo());
+	_parser->property(MidiParser::mpCenterPitchWheelOnUnload, 1);
+	_parser->property(MidiParser::mpSendSustainOffOnNotesOff, 1);
+
+	// Handle music looping
+	_parser->property(MidiParser::mpAutoLoop, _isLooping);
+	//	_isLooping = loop;
+
+	setVolume(127);
+	_isPlaying = true;
 }
 
 bool MusicManager::checkMidiDone() {
-	// TODO
-	return true;
+	warning("MusicManager::checkMidiDone");
+	return (!_isPlaying);
 }
 
 void MusicManager::midiRepeat() {
-	// TODO
+	warning("MusicManager::midiRepeat");
+	if (!_parser)
+		return;
+
+	_isLooping = true;
+	_parser->property(MidiParser::mpAutoLoop, _isLooping);
+	if (!_isPlaying)
+		_parser->setTrack(0);
 }
 
 void MusicManager::stopSong() {
-	// TODO
+	warning("MusicManager::stopSong");
+	stop();
 }
 
 void MusicManager::loadMusic(int fileNum, int subfile) {
+	warning("MusicManager::loadMusic %d %d", fileNum, subfile);
 	_music = _vm->_files->loadFile(fileNum, subfile);
 }
 
 void MusicManager::loadMusic(FileIdent file) {
+	warning("MusicManager::loadMusic %d %d", file._fileNum, file._subfile);
 	_music = _vm->_files->loadFile(file);
 }
 
 void MusicManager::newMusic(int musicId, int mode) {
+	warning("MusicManager::newMusic %d %d", musicId, mode);
 	if (mode == 1) {
 		stopSong();
 		freeMusic();
 		_music = _tempMusic;
 		_tempMusic = nullptr;
-		_musicRepeat = true;
-		if (_music)
-			midiPlay();
+		_isLooping = true;
 	} else {
-		_musicRepeat = (mode == 2);
+		_isLooping = (mode == 2);
 		_tempMusic = _music;
 		stopSong();
 		loadMusic(97, musicId);
 	}
+
+	if (_music)
+		midiPlay();
 }
 
 void MusicManager::freeMusic() {
@@ -202,4 +261,9 @@ void MusicManager::freeMusic() {
 	_music = nullptr;
 }
 
+void MusicManager::setLoop(bool loop) {
+	_isLooping = loop;
+	if (_parser)
+		_parser->property(MidiParser::mpAutoLoop, _isLooping);
+}
 } // End of namespace Access
diff --git a/engines/access/sound.h b/engines/access/sound.h
index 827a00f8b5..5089bd093b 100644
--- a/engines/access/sound.h
+++ b/engines/access/sound.h
@@ -26,6 +26,8 @@
 #include "common/scummsys.h"
 #include "audio/mixer.h"
 #include "access/files.h"
+#include "audio/midiplayer.h"
+#include "audio/midiparser.h"
 
 #define MAX_SOUNDS 20
 
@@ -70,17 +72,17 @@ public:
 	void freeSounds();
 };
 
-class MusicManager {
+class MusicManager : public Audio::MidiPlayer {
 private:
 	AccessEngine *_vm;
 	Audio::Mixer *_mixer;
 
 	Resource *_tempMusic;
 
-public:
-	bool _musicRepeat;
-	bool _playingSound;
+	// MidiDriver_BASE interface implementation
+	virtual void send(uint32 b);
 
+public:
 	Resource *_music;
 
 public:
@@ -101,6 +103,8 @@ public:
 
 	void loadMusic(int fileNum, int subfile);
 	void loadMusic(FileIdent file);
+
+	void setLoop(bool loop);
 };
 } // End of namespace Access
 
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