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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 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.
+ *
+ */
+
+#ifndef SCUMM_PLAYERS_PLAYER_NES_H
+#define SCUMM_PLAYERS_PLAYER_NES_H
+
+#include "common/scummsys.h"
+#include "scumm/music.h"
+#include "audio/audiostream.h"
+#include "audio/mixer.h"
+
+namespace Scumm {
+
+class ScummEngine;
+namespace APUe {
+class APU;
+}
+
+static const int MAXVOLUME = 0x7F;
+static const int NUMSLOTS = 3;
+static const int NUMCHANS = 4;
+
+/**
+ * Scumm NES sound/music driver.
+ */
+class Player_NES : public Audio::AudioStream, public MusicEngine {
+public:
+ Player_NES(ScummEngine *scumm, Audio::Mixer *mixer);
+ virtual ~Player_NES();
+
+ virtual void setMusicVolume(int vol);
+ virtual void startSound(int sound);
+ virtual void stopSound(int sound);
+ virtual void stopAllSounds();
+ virtual int getSoundStatus(int sound) const;
+
+ // AudioStream API
+ int readBuffer(int16 *buffer, const int numSamples);
+ bool isStereo() const { return false; }
+ bool endOfData() const { return false; }
+ int getRate() const { return _sampleRate; }
+
+private:
+
+ void sound_play();
+ void playSFX(int nr);
+ void playMusic();
+ byte fetchSoundByte(int nr);
+ void chainCommand(int chan);
+ void checkSilenceChannels(int chan);
+
+ void APU_writeChannel(int chan, int offset, byte value);
+ void APU_writeControl(byte value);
+ byte APU_readStatus();
+
+ ScummEngine *_vm;
+ Audio::Mixer *_mixer;
+ Audio::SoundHandle _soundHandle;
+ APUe::APU *_apu;
+ int _sampleRate;
+ int _samples_per_frame;
+ int _current_sample;
+ int _maxvol;
+
+ struct slot {
+ int framesleft;
+ int id;
+ int type;
+ byte *data;
+ int offset;
+ } _slot[NUMSLOTS];
+
+ struct mchan {
+ int command;
+ int framedelay;
+ int pitch;
+ int volume;
+ int voldelta;
+ int envflags;
+ int cmdlock;
+ } _mchan[NUMCHANS];
+
+ bool isSFXplaying, wasSFXplaying;
+
+ byte *dataStart;
+ int numNotes;
+ byte *auxData1;
+ byte *auxData2;
+
+ byte *soundptr;
+};
+
+} // End of namespace Scumm
+
+#endif