mirror of
https://github.com/libretro/scummvm.git
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773 lines
16 KiB
C++
773 lines
16 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2006 The ScummVM project
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*
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* Copyright (C) 1999-2001 Sarien Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/stdafx.h"
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#include "sound/mixer.h"
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#include "agi/agi.h"
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namespace Agi {
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#define USE_INTERPOLATION
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#define USE_CHORUS
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/* TODO: add support for variable sampling rate in the output device
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*/
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#ifdef USE_IIGS_SOUND
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/**
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* AGI engine sound envelope structure.
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*/
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struct sound_envelope {
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uint8 bp;
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uint8 inc_hi;
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uint8 inc_lo;
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};
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struct sound_wavelist {
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uint8 top;
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uint8 addr;
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uint8 size;
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uint8 mode;
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uint8 rel_hi;
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uint8 rel_lo;
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};
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struct sound_instrument {
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struct sound_envelope env[8];
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uint8 relseg;
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uint8 priority;
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uint8 bendrange;
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uint8 vibdepth;
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uint8 vibspeed;
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uint8 spare;
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uint8 wac;
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uint8 wbc;
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struct sound_wavelist wal[8];
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struct sound_wavelist wbl[8];
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};
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struct sound_iigs_sample {
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uint8 type_lo;
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uint8 type_hi;
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uint8 srate_lo;
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uint8 srate_hi;
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uint16 unknown[2];
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uint8 size_lo;
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uint8 size_hi;
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uint16 unknown2[13];
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};
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#if 0
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static struct sound_instrument *instruments;
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static int num_instruments;
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static uint8 *wave;
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#endif
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#endif
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static int playing;
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static struct channel_info chn[NUM_CHANNELS];
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static int endflag = -1;
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static int playing_sound = -1;
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static uint8 *song;
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static uint8 env;
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struct sound_driver *snd;
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extern struct sound_driver sound_dummy;
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static void stop_note(int i);
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static void play_note(int i, int freq, int vol);
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#ifdef USE_PCM_SOUND
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int16 *snd_buffer;
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static int16 *waveform;
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static int16 waveform_ramp[WAVEFORM_SIZE] = {
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0, 8, 16, 24, 32, 40, 48, 56,
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64, 72, 80, 88, 96, 104, 112, 120,
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128, 136, 144, 152, 160, 168, 176, 184,
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192, 200, 208, 216, 224, 232, 240, 255,
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0, -248, -240, -232, -224, -216, -208, -200,
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-192, -184, -176, -168, -160, -152, -144, -136,
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-128, -120, -112, -104, -96, -88, -80, -72,
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-64, -56, -48, -40, -32, -24, -16, -8 /* Ramp up */
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};
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static int16 waveform_square[WAVEFORM_SIZE] = {
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255, 230, 220, 220, 220, 220, 220, 220,
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220, 220, 220, 220, 220, 220, 220, 220,
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220, 220, 220, 220, 220, 220, 220, 220,
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220, 220, 220, 220, 220, 220, 220, 110,
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-255, -230, -220, -220, -220, -220, -220, -220,
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-220, -220, -220, -220, -220, -220, -220, -220,
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-220, -220, -220, -220, -220, -220, -220, -220,
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-220, -220, -220, -110, 0, 0, 0, 0 /* Square */
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};
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static int16 waveform_mac[WAVEFORM_SIZE] = {
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45, 110, 135, 161, 167, 173, 175, 176,
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156, 137, 123, 110, 91, 72, 35, -2,
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-60, -118, -142, -165, -170, -176, -177, -179,
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-177, -176, -164, -152, -117, -82, -17, 47,
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92, 137, 151, 166, 170, 173, 171, 169,
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151, 133, 116, 100, 72, 43, -7, -57,
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-99, -141, -156, -170, -174, -177, -178, -179,
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-175, -172, -165, -159, -137, -114, -67, -19
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};
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#endif /* USE_PCM_SOUND */
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#ifdef USE_IIGS_SOUND
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static uint16 period[] = {
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1024, 1085, 1149, 1218, 1290, 1367,
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1448, 1534, 1625, 1722, 1825, 1933
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};
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static struct agi_note play_sample[] = {
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{0xff, 0x7f, 0x18, 0x00, 0x7f},
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{0xff, 0xff, 0x00, 0x00, 0x00},
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{0xff, 0xff, 0x00, 0x00, 0x00},
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{0xff, 0xff, 0x00, 0x00, 0x00}
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};
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static int note_to_period(int note) {
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return 10 * (period[note % 12] >> (note / 12 - 3));
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}
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#endif /* USE_IIGS_SOUND */
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void unload_sound(int resnum) {
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if (game.dir_sound[resnum].flags & RES_LOADED) {
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if (game.sounds[resnum].flags & SOUND_PLAYING)
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/* FIXME: Stop playing */
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;
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/* Release RAW data for sound */
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free(game.sounds[resnum].rdata);
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game.sounds[resnum].rdata = NULL;
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game.dir_sound[resnum].flags &= ~RES_LOADED;
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}
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}
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void decode_sound(int resnum) {
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#ifdef USE_IIGS_SOUND
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int type, size;
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int16 *buf;
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uint8 *src;
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struct sound_iigs_sample *smp;
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debugC(3, kDebugLevelSound, "(%d)", resnum);
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type = READ_LE_UINT16(game.sounds[resnum].rdata);
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if (type == AGI_SOUND_SAMPLE) {
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/* Convert sample data to 16 bit signed format
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*/
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smp = (struct sound_iigs_sample *)game.sounds[resnum].rdata;
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size = ((int)smp->size_hi << 8) + smp->size_lo;
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src = (uint8 *) game.sounds[resnum].rdata;
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buf = (int16 *) calloc(1, 54 + (size << 1) + 100); /* FIXME */
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memcpy(buf, src, 54);
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for (; size--; buf[size + 54] = ((int16) src[size + 54] - 0x80) << 4); /* FIXME */
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game.sounds[resnum].rdata = (uint8 *) buf;
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free(src);
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}
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#endif /* USE_IIGS_SOUND */
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}
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void start_sound(int resnum, int flag) {
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int i, type;
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#ifdef USE_IIGS_SOUND
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struct sound_iigs_sample *smp;
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#endif
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if (game.sounds[resnum].flags & SOUND_PLAYING)
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return;
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stop_sound();
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if (game.sounds[resnum].rdata == NULL)
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return;
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type = READ_LE_UINT16(game.sounds[resnum].rdata);
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if (type != AGI_SOUND_SAMPLE && type != AGI_SOUND_MIDI && type != AGI_SOUND_4CHN)
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return;
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game.sounds[resnum].flags |= SOUND_PLAYING;
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game.sounds[resnum].type = type;
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playing_sound = resnum;
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song = (uint8 *) game.sounds[resnum].rdata;
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switch (type) {
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#ifdef USE_IIGS_SOUND
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case AGI_SOUND_SAMPLE:
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debugC(3, kDebugLevelSound, "IIGS sample");
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smp = (struct sound_iigs_sample *)game.sounds[resnum].rdata;
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for (i = 0; i < NUM_CHANNELS; i++) {
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chn[i].type = type;
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chn[i].flags = 0;
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chn[i].ins = (int16 *) & game.sounds[resnum].rdata[54];
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chn[i].size = ((int)smp->size_hi << 8) + smp->size_lo;
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chn[i].ptr = &play_sample[i];
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chn[i].timer = 0;
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chn[i].vol = 0;
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chn[i].end = 0;
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}
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break;
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case AGI_SOUND_MIDI:
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debugC(3, kDebugLevelSound, "IIGS MIDI sequence");
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for (i = 0; i < NUM_CHANNELS; i++) {
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chn[i].type = type;
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chn[i].flags = AGI_SOUND_LOOP | AGI_SOUND_ENVELOPE;
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chn[i].ins = waveform;
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chn[i].size = WAVEFORM_SIZE;
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chn[i].vol = 0;
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chn[i].end = 0;
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}
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chn[0].timer = *(song + 2);
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chn[0].ptr = (struct agi_note *)(song + 3);
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break;
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#endif
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case AGI_SOUND_4CHN:
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/* Initialize channel info */
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for (i = 0; i < NUM_CHANNELS; i++) {
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chn[i].type = type;
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chn[i].flags = AGI_SOUND_LOOP;
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if (env) {
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chn[i].flags |= AGI_SOUND_ENVELOPE;
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chn[i].adsr = AGI_SOUND_ENV_ATTACK;
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}
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#ifdef USE_PCM_SOUND
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chn[i].ins = waveform;
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chn[i].size = WAVEFORM_SIZE;
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#endif
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chn[i].ptr = (struct agi_note *)(song + (song[i << 1] | (song[(i << 1) + 1] << 8)));
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chn[i].timer = 0;
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chn[i].vol = 0;
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chn[i].end = 0;
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}
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break;
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}
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#ifdef USE_PCM_SOUND
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memset(snd_buffer, 0, BUFFER_SIZE << 1);
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#endif
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endflag = flag;
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/* Nat Budin reports that the flag should be reset when sound starts
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*/
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setflag(endflag, false);
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/* FIXME: should wait for sound time instead of setting the flag
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* immediately
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*/
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if (opt.nosound) {
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setflag(endflag, true);
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stop_sound();
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}
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}
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void stop_sound() {
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int i;
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endflag = -1;
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for (i = 0; i < NUM_CHANNELS; i++)
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stop_note(i);
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if (playing_sound != -1) {
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game.sounds[playing_sound].flags &= ~SOUND_PLAYING;
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playing_sound = -1;
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}
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}
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static int16 *buffer;
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int init_sound() {
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int r = -1;
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#ifdef USE_PCM_SOUND
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buffer = snd_buffer = (int16 *) calloc(2, BUFFER_SIZE);
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#endif
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env = false;
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#ifdef USE_PCM_SOUND
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switch (opt.soundemu) {
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case SOUND_EMU_NONE:
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waveform = waveform_ramp;
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env = true;
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break;
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case SOUND_EMU_AMIGA:
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case SOUND_EMU_PC:
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waveform = waveform_square;
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break;
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case SOUND_EMU_MAC:
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waveform = waveform_mac;
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break;
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}
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#endif
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report("Initializing sound:\n");
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report("sound: envelopes ");
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if (env) {
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report("enabled (decay=%d, sustain=%d)\n", ENV_DECAY, ENV_SUSTAIN);
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} else {
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report("disabled\n");
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}
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#ifdef USE_IIGS_SOUND
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/*load_instruments ("demo.sys"); */
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#endif
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return r;
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}
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void deinit_sound(void) {
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debugC(3, kDebugLevelSound, "()");
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if (snd)
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snd->deinit();
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#ifdef USE_PCM_SOUND
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free(snd_buffer);
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#endif
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}
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static void stop_note(int i) {
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chn[i].adsr = AGI_SOUND_ENV_RELEASE;
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#ifdef USE_CHORUS
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/* Stop chorus ;) */
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if (chn[i].type == AGI_SOUND_4CHN &&
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opt.soundemu == SOUND_EMU_NONE && i < 3) {
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stop_note(i + 4);
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}
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#endif
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#ifdef __TURBOC__
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if (i == 0)
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nosound();
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#endif
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}
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static void play_note(int i, int freq, int vol) {
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if (!getflag(F_sound_on))
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vol = 0;
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else if (vol && opt.soundemu == SOUND_EMU_PC)
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vol = 160;
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#ifdef USE_PCM_SOUND
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chn[i].phase = 0;
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#endif
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chn[i].freq = freq;
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chn[i].vol = vol;
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chn[i].env = 0x10000;
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chn[i].adsr = AGI_SOUND_ENV_ATTACK;
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#ifdef USE_CHORUS
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/* Add chorus ;) */
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if (chn[i].type == AGI_SOUND_4CHN &&
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opt.soundemu == SOUND_EMU_NONE && i < 3) {
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int newfreq = freq * 1007 / 1000;
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if (freq == newfreq)
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newfreq++;
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play_note(i + 4, newfreq, vol * 2 / 3);
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}
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#endif
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#ifdef __TURBOC__
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if (i == 0)
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sound(freq);
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#endif
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}
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#ifdef USE_IIGS_SOUND
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void play_midi_sound() {
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uint8 *p;
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uint8 parm1, parm2;
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static uint8 cmd, ch;
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playing = 1;
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if (chn[0].timer > 0) {
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chn[0].timer -= 2;
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return;
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}
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p = (uint8 *) chn[0].ptr;
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if (*p & 0x80) {
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cmd = *p++;
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ch = cmd & 0x0f;
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cmd >>= 4;
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}
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switch (cmd) {
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case 0x08:
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parm1 = *p++;
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parm2 = *p++;
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if (ch < NUM_CHANNELS)
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stop_note(ch);
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break;
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case 0x09:
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parm1 = *p++;
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parm2 = *p++;
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if (ch < NUM_CHANNELS)
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play_note(ch, note_to_period(parm1), 127);
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break;
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case 0x0b:
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parm1 = *p++;
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parm2 = *p++;
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debugC(3, kDebugLevelSound, "controller %02x, ch %02x, val %02x", parm1, ch, parm2);
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break;
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case 0x0c:
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parm1 = *p++;
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#if 0
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if (ch < NUM_CHANNELS) {
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chn[ch].ins = (uint16 *) & wave[waveaddr[parm1]];
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chn[ch].size = wavesize[parm1];
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}
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debugC(3, kDebugLevelSound, "set patch %02x (%d,%d), ch %02x",
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parm1, waveaddr[parm1], wavesize[parm1], ch);
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#endif
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break;
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}
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chn[0].timer = *p++;
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chn[0].ptr = (struct agi_note *)p;
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if (*p >= 0xfc) {
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debugC(3, kDebugLevelSound, "end of sequence");
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playing = 0;
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return;
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}
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}
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void play_sample_sound() {
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play_note(0, 11025 * 10, 200);
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playing = 1;
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}
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#endif /* USE_IIGS_SOUND */
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void play_agi_sound() {
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int i, freq;
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for (playing = i = 0; i < (opt.soundemu == SOUND_EMU_PC ? 1 : 4); i++) {
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playing |= !chn[i].end;
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if (chn[i].end)
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continue;
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if ((--chn[i].timer) <= 0) {
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stop_note(i);
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freq = ((chn[i].ptr->frq_0 & 0x3f) << 4) | (int)(chn[i].ptr->frq_1 & 0x0f);
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if (freq) {
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uint8 v = chn[i].ptr->vol & 0x0f;
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play_note(i, freq * 10, v == 0xf ? 0 : 0xff - (v << 1));
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}
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chn[i].timer = ((int)chn[i].ptr->dur_hi << 8) | chn[i].ptr->dur_lo;
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if (chn[i].timer == 0xffff) {
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chn[i].end = 1;
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chn[i].vol = 0;
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chn[i].env = 0;
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#ifdef USE_CHORUS
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/* chorus */
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if (chn[i].type == AGI_SOUND_4CHN && opt.soundemu == SOUND_EMU_NONE && i < 3) {
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chn[i + 4].vol = 0;
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chn[i + 4].env = 0;
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}
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#endif
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}
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chn[i].ptr++;
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}
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}
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}
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void play_sound() {
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int i;
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if (endflag == -1)
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return;
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#ifdef USE_IIGS_SOUND
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if (chn[0].type == AGI_SOUND_MIDI) {
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/* play_midi_sound (); */
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playing = 0;
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} else if (chn[0].type == AGI_SOUND_SAMPLE) {
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play_sample_sound();
|
|
} else
|
|
#endif
|
|
play_agi_sound();
|
|
|
|
if (!playing) {
|
|
for (i = 0; i < NUM_CHANNELS; chn[i++].vol = 0);
|
|
|
|
if (endflag != -1)
|
|
setflag(endflag, true);
|
|
|
|
if (playing_sound != -1)
|
|
game.sounds[playing_sound].flags &= ~SOUND_PLAYING;
|
|
playing_sound = -1;
|
|
endflag = -1;
|
|
}
|
|
}
|
|
|
|
#ifdef USE_PCM_SOUND
|
|
|
|
uint32 mix_sound(void) {
|
|
register int i, p;
|
|
int16 *src;
|
|
int c, b, m;
|
|
|
|
memset(snd_buffer, 0, BUFFER_SIZE << 1);
|
|
|
|
for (c = 0; c < NUM_CHANNELS; c++) {
|
|
if (!chn[c].vol)
|
|
continue;
|
|
|
|
m = chn[c].flags & AGI_SOUND_ENVELOPE ?
|
|
chn[c].vol * chn[c].env >> 16 : chn[c].vol;
|
|
|
|
if (chn[c].type != AGI_SOUND_4CHN || c != 3) {
|
|
src = chn[c].ins;
|
|
|
|
p = chn[c].phase;
|
|
for (i = 0; i < BUFFER_SIZE; i++) {
|
|
b = src[p >> 8];
|
|
#ifdef USE_INTERPOLATION
|
|
b += ((src[((p >> 8) + 1) % chn[c].size] - src[p >> 8]) * (p & 0xff)) >> 8;
|
|
#endif
|
|
snd_buffer[i] += (b * m) >> 4;
|
|
|
|
p += (uint32) 118600 *4 / chn[c].freq;
|
|
|
|
/* FIXME */
|
|
if (chn[c].flags & AGI_SOUND_LOOP) {
|
|
p %= chn[c].size << 8;
|
|
} else {
|
|
if (p >= chn[c].size << 8) {
|
|
p = chn[c].vol = 0;
|
|
chn[c].end = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
chn[c].phase = p;
|
|
} else {
|
|
/* Add white noise */
|
|
for (i = 0; i < BUFFER_SIZE; i++) {
|
|
b = rnd->getRandomNumber(255) - 128;
|
|
snd_buffer[i] += (b * m) >> 4;
|
|
}
|
|
}
|
|
|
|
switch (chn[c].adsr) {
|
|
case AGI_SOUND_ENV_ATTACK:
|
|
/* not implemented */
|
|
chn[c].adsr = AGI_SOUND_ENV_DECAY;
|
|
break;
|
|
case AGI_SOUND_ENV_DECAY:
|
|
if (chn[c].env > chn[c].vol * ENV_SUSTAIN + ENV_DECAY) {
|
|
chn[c].env -= ENV_DECAY;
|
|
} else {
|
|
chn[c].env = chn[c].vol * ENV_SUSTAIN;
|
|
chn[c].adsr = AGI_SOUND_ENV_SUSTAIN;
|
|
}
|
|
break;
|
|
case AGI_SOUND_ENV_SUSTAIN:
|
|
break;
|
|
case AGI_SOUND_ENV_RELEASE:
|
|
if (chn[c].env >= ENV_RELEASE) {
|
|
chn[c].env -= ENV_RELEASE;
|
|
} else {
|
|
chn[c].env = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return BUFFER_SIZE;
|
|
}
|
|
|
|
#ifdef USE_IIGS_SOUND
|
|
|
|
#if 0
|
|
int load_instruments(char *fname) {
|
|
Common::File fp;
|
|
int i, j, k;
|
|
struct sound_instrument ai;
|
|
int num_wav;
|
|
char *path;
|
|
|
|
path = "sierrast";
|
|
|
|
if (!fp.open(path))
|
|
return err_BadFileOpen;
|
|
report("Loading samples: %s\n", path);
|
|
|
|
if ((wave = malloc(0x10000 * 2)) == NULL)
|
|
return err_NotEnoughMemory;
|
|
|
|
fp.read(wave, 0x10000);
|
|
fp.close();
|
|
for (i = 0x10000; i--;) {
|
|
((int16 *) wave)[i] = 2 * ((int16) wave[i] - 128);
|
|
}
|
|
|
|
fp = fopen("bla", "w");
|
|
fwrite(wave, 2, 0x10000, fp);
|
|
fclose(fp);
|
|
|
|
report("Loading instruments: %s\n", path);
|
|
|
|
if ((fp = fopen(path, "rb")) == NULL)
|
|
return err_BadFileOpen;
|
|
|
|
fseek(fp, 0x8469, SEEK_SET);
|
|
|
|
for (num_wav = j = 0; j < 40; j++) {
|
|
fread(&ai, 1, 32, fp);
|
|
|
|
if (ai.env[0].bp > 0x7f)
|
|
break;
|
|
|
|
#if 0
|
|
printf("Instrument %d loaded ----------------\n", j);
|
|
printf("Envelope:\n");
|
|
for (i = 0; i < 8; i++)
|
|
printf("[seg %d]: BP %02x Inc %04x\n", i, ai.env[i].bp,
|
|
((int)ai.env[i].inc_hi << 8) | ai.env[i].inc_lo);
|
|
printf("rel seg: %d, pri inc: %d, bend range: %d, vib dep: %d, "
|
|
"vib spd: %d\n", ai.relseg, ai.priority,
|
|
ai.bendrange, ai.vibdepth, ai.vibspeed);
|
|
printf("A wave count: %d, B wave count: %d\n", ai.wac, ai.wbc);
|
|
#endif
|
|
|
|
for (k = 0; k < ai.wac; k++, num_wav++) {
|
|
fread(&ai.wal[k], 1, 6, fp);
|
|
#if 0
|
|
printf("[A %d of %d] top: %02x, wave address: %02x, "
|
|
"size: %02x, mode: %02x, relPitch: %04x\n", k + 1,
|
|
ai.wac, ai.wal[k].top, ai.wal[k].addr, ai.wal[k].size,
|
|
ai.wal[k].mode, ((int)ai.wal[k].rel_hi << 8) | ai.wal[k].rel_lo);
|
|
#endif
|
|
}
|
|
|
|
for (k = 0; k < ai.wbc; k++, num_wav++) {
|
|
fread(&ai.wbl[k], 1, 6, fp);
|
|
#if 0
|
|
printf("[B %d of %d] top: %02x, wave address: %02x, "
|
|
"size: %02x, mode: %02x, relPitch: %04x\n", k + 1, ai.wbc,
|
|
ai.wbl[k].top, ai.wbl[k].addr, ai.wbl[k].size,
|
|
ai.wbl[k].mode, ((int)ai.wbl[k].rel_hi << 8) | ai.wbl[k].rel_lo);
|
|
#endif
|
|
}
|
|
waveaddr[j] = 256 * ai.wal[0].addr;
|
|
wavesize[j] = 256 * (1 << ((ai.wal[0].size) & 0x07));
|
|
#if 1
|
|
printf("%d addr = %d\n", j, waveaddr[j]);
|
|
printf(" size = %d\n", wavesize[j]);
|
|
#endif
|
|
}
|
|
|
|
num_instruments = j;
|
|
printf("%d Ensoniq 5503 instruments loaded. (%d waveforms)\n", num_instruments, num_wav);
|
|
|
|
fclose(fp);
|
|
|
|
return err_OK;
|
|
}
|
|
|
|
void unload_instruments() {
|
|
free(instruments);
|
|
}
|
|
#endif
|
|
|
|
#endif /* USE_IIGS_SOUND */
|
|
|
|
static void fill_audio(void *udata, int16 * stream, uint len) {
|
|
int16 *origData = stream;
|
|
len <<= 2;
|
|
uint origLen = len;
|
|
|
|
uint32 p = 0;
|
|
static uint32 n = 0, s = 0;
|
|
|
|
debugC(5, kDebugLevelSound, "(%p, %p, %d)", udata, stream, len);
|
|
memcpy(stream, (uint8 *) buffer + s, p = n);
|
|
for (n = 0, len -= p; n < len; p += n, len -= n) {
|
|
play_sound();
|
|
n = mix_sound() << 1;
|
|
if (len < n) {
|
|
memcpy((uint8 *) stream + p, buffer, len);
|
|
s = len;
|
|
n -= s;
|
|
return;
|
|
} else {
|
|
memcpy((uint8 *) stream + p, buffer, n);
|
|
}
|
|
}
|
|
play_sound();
|
|
n = mix_sound() << 1;
|
|
memcpy((uint8 *) stream + p, buffer, s = len);
|
|
n -= s;
|
|
}
|
|
|
|
AGIMusic::AGIMusic(Audio::Mixer *pMixer) {
|
|
_mixer = pMixer;
|
|
_sampleRate = pMixer->getOutputRate();
|
|
_mixer->setupPremix(this);
|
|
}
|
|
|
|
void AGIMusic::premixerCall(int16 *data, uint len) {
|
|
Agi::fill_audio(NULL, data, len);
|
|
}
|
|
|
|
void AGIMusic::setVolume(uint8 volume) {
|
|
// TODO
|
|
}
|
|
|
|
AGIMusic::~AGIMusic(void) {
|
|
_mixer->setupPremix(NULL);
|
|
}
|
|
|
|
AGIMusic *g_agi_music;
|
|
|
|
#endif /* USE_PCM_SOUND */
|
|
|
|
} // End of namespace Agi
|