138 lines
4.0 KiB
C++
138 lines
4.0 KiB
C++
/* 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 NUVIE_SOUND_ADPLUG_U6M
|
|
#define NUVIE_SOUND_ADPLUG_U6M
|
|
|
|
#include "ultima/nuvie/sound/adplug/adplug_player.h"
|
|
#include "common/stack.h"
|
|
|
|
namespace Ultima {
|
|
namespace Nuvie {
|
|
|
|
class Cu6mPlayer: public CPlayer {
|
|
public:
|
|
static CPlayer *factory(Copl *newopl);
|
|
|
|
Cu6mPlayer(Copl *newopl) : CPlayer(newopl), song_data(0), driver_active(false),
|
|
songend(false), song_pos(0), loop_position(0), read_delay(0), played_ticks(0) {
|
|
ARRAYCLEAR(channel_freq);
|
|
}
|
|
|
|
~Cu6mPlayer() override;
|
|
|
|
|
|
|
|
bool load(const Common::Path &filename) override;
|
|
bool update() override;
|
|
void rewind(int subsong) override;
|
|
float getrefresh() override;
|
|
|
|
Std::string gettype() override {
|
|
return Std::string("Ultima 6 Music");
|
|
};
|
|
|
|
|
|
protected:
|
|
|
|
struct byte_pair {
|
|
unsigned char lo;
|
|
unsigned char hi;
|
|
};
|
|
|
|
struct subsong_info { // information about a subsong
|
|
int continue_pos;
|
|
int subsong_repetitions;
|
|
int subsong_start;
|
|
};
|
|
|
|
struct data_block { //
|
|
long size;
|
|
unsigned char *data;
|
|
};
|
|
|
|
|
|
// class variables
|
|
long played_ticks;
|
|
|
|
unsigned char *song_data; // the uncompressed .m file (the "song")
|
|
bool driver_active; // flag to prevent reentrancy
|
|
bool songend; // indicates song end
|
|
int song_pos; // current offset within the song
|
|
int loop_position; // position of the loop point
|
|
int read_delay; // delay (in timer ticks) before further song data is read
|
|
Common::Stack<subsong_info> subsong_stack;
|
|
|
|
int instrument_offsets[9]; // offsets of the adlib instrument data
|
|
// vibrato ("vb")
|
|
unsigned char vb_current_value[9];
|
|
unsigned char vb_double_amplitude[9];
|
|
unsigned char vb_multiplier[9];
|
|
unsigned char vb_direction_flag[9];
|
|
// mute factor ("mf") = not(volume)
|
|
unsigned char carrier_mf[9];
|
|
signed char carrier_mf_signed_delta[9];
|
|
unsigned char carrier_mf_mod_delay_backup[9];
|
|
unsigned char carrier_mf_mod_delay[9];
|
|
// frequency
|
|
byte_pair channel_freq[9]; // adlib freq settings for each channel
|
|
signed char channel_freq_signed_delta[9];
|
|
|
|
// protected functions used by update()
|
|
void command_loop();
|
|
unsigned char read_song_byte();
|
|
signed char read_signed_song_byte();
|
|
void dec_clip(int &);
|
|
byte_pair expand_freq_byte(unsigned char);
|
|
void set_adlib_freq(int channel, byte_pair freq_word);
|
|
void set_adlib_freq_no_update(int channel, byte_pair freq_word);
|
|
void set_carrier_mf(int channel, unsigned char mute_factor);
|
|
void set_modulator_mf(int channel, unsigned char mute_factor);
|
|
void freq_slide(int channel);
|
|
void vibrato(int channel);
|
|
void mf_slide(int channel);
|
|
|
|
void command_0(int channel);
|
|
void command_1(int channel);
|
|
void command_2(int channel);
|
|
void command_3(int channel);
|
|
void command_4(int channel);
|
|
void command_5(int channel);
|
|
void command_6(int channel);
|
|
void command_7(int channel);
|
|
void command_81();
|
|
void command_82();
|
|
void command_83();
|
|
void command_85();
|
|
void command_86();
|
|
void command_E();
|
|
void command_F();
|
|
|
|
void out_adlib(unsigned char adlib_register, unsigned char adlib_data);
|
|
void out_adlib_opcell(int channel, bool carrier, unsigned char adlib_register, unsigned char out_byte);
|
|
|
|
};
|
|
|
|
} // End of namespace Nuvie
|
|
} // End of namespace Ultima
|
|
|
|
#endif
|