aboutsummaryrefslogtreecommitdiff
path: root/engines/scumm/player_pce.cpp
diff options
context:
space:
mode:
authorFilippos Karapetis2013-11-01 06:57:20 +0200
committerFilippos Karapetis2013-11-01 06:57:53 +0200
commit651bf899399de2b5c2d8e62a5bb4964b037950d2 (patch)
tree103dfc3e6677e7d5c26e13e8866648782f226247 /engines/scumm/player_pce.cpp
parent37d4316a4014970171dfea8fc19f8c9e978e9102 (diff)
downloadscummvm-rg350-651bf899399de2b5c2d8e62a5bb4964b037950d2.tar.gz
scummvm-rg350-651bf899399de2b5c2d8e62a5bb4964b037950d2.tar.bz2
scummvm-rg350-651bf899399de2b5c2d8e62a5bb4964b037950d2.zip
SCUMM: Move all players to a separate "player" directory
There are 34 player .cpp/.h player files, so they have been placed in their own directory, to logically separate them from the rest of the engine
Diffstat (limited to 'engines/scumm/player_pce.cpp')
-rw-r--r--engines/scumm/player_pce.cpp756
1 files changed, 0 insertions, 756 deletions
diff --git a/engines/scumm/player_pce.cpp b/engines/scumm/player_pce.cpp
deleted file mode 100644
index 8d886ee008..0000000000
--- a/engines/scumm/player_pce.cpp
+++ /dev/null
@@ -1,756 +0,0 @@
-/* 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.
- *
- */
-
-/*
- * The PSG_HuC6280 class is based on the HuC6280 sound chip emulator
- * by Charles MacDonald (E-mail: cgfm2@hotmail.com, WWW: http://cgfm2.emuviews.com)
- * The implementation used here was taken from MESS (http://www.mess.org/)
- * the Multiple Emulator Super System (sound/c6280.c).
- * LFO and noise channel support have been removed (not used by Loom PCE).
- */
-
-#include <math.h>
-#include "player_pce.h"
-#include "common/endian.h"
-
-// PCE sound engine is only used by Loom, which requires 16bit color support
-#ifdef USE_RGB_COLOR
-
-namespace Scumm {
-
-// CPU and PSG use the same base clock but with a different divider
-const double MASTER_CLOCK = 21477270.0; // ~21.48 MHz
-const double CPU_CLOCK = MASTER_CLOCK / 3; // ~7.16 MHz
-const double PSG_CLOCK = MASTER_CLOCK / 6; // ~3.58 MHz
-const double TIMER_CLOCK = CPU_CLOCK / 1024; // ~6.9 kHz
-
-// The PSG update routine is originally triggered by the timer IRQ (not by VSYNC)
-// approx. 120 times per second (TIML=0x39). But as just every second call is used
-// to update the PSG we will call the update routine approx. 60 times per second.
-const double UPDATE_FREQ = TIMER_CLOCK / (57 + 1) / 2; // ~60 Hz
-
-// $AFA5
-static const byte wave_table[7][32] = {
- { // sine
- 0x10, 0x19, 0x1C, 0x1D, 0x1E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1E, 0x1D, 0x1C, 0x19,
- 0x10, 0x05, 0x02, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x05,
- }, { // mw-shaped
- 0x10, 0x1C, 0x1D, 0x1E, 0x1E, 0x1F, 0x1F, 0x1E, 0x1C, 0x1E, 0x1F, 0x1F, 0x1E, 0x1E, 0x1D, 0x1C,
- 0x10, 0x03, 0x02, 0x01, 0x01, 0x00, 0x00, 0x01, 0x03, 0x01, 0x00, 0x00, 0x01, 0x01, 0x02, 0x03,
- }, { // square
- 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E, 0x1E,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- }, { // triangle
- 0x10, 0x0C, 0x08, 0x04, 0x01, 0x04, 0x08, 0x0C, 0x10, 0x14, 0x18, 0x1C, 0x1F, 0x1C, 0x18, 0x14,
- 0x10, 0x0C, 0x08, 0x04, 0x01, 0x04, 0x08, 0x0C, 0x10, 0x14, 0x18, 0x1C, 0x1F, 0x1C, 0x18, 0x14,
- }, { // saw-tooth
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x06, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
- 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
- }, { // sigmoid
- 0x07, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x1F, 0x1F, 0x1E, 0x1D, 0x1C, 0x1B, 0x1A, 0x19,
- 0x08, 0x06, 0x05, 0x03, 0x02, 0x01, 0x00, 0x00, 0x0F, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x16,
- }, { // MW-shaped
- 0x1F, 0x1E, 0x1D, 0x1D, 0x1C, 0x1A, 0x17, 0x0F, 0x0F, 0x17, 0x1A, 0x1C, 0x1D, 0x1D, 0x1E, 0x1F,
- 0x00, 0x01, 0x02, 0x02, 0x03, 0x05, 0x08, 0x0F, 0x0F, 0x08, 0x05, 0x03, 0x02, 0x02, 0x01, 0x00
- }
-};
-
-// AEBC
-static const int control_offsets[14] = {
- 0, 7, 20, 33, 46, 56, 75, 88, 116, 126, 136, 152, 165, 181
-};
-
-// AED8
-static const byte control_data[205] = {
- /* 0*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0xFF,
- /* 7*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x01, 0x00, 0xF0, 0x3A, 0x00, 0xFD, 0xFF,
- /* 20*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x01, 0x00, 0xF0, 0x1D, 0x00, 0xF8, 0xFF,
- /* 33*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x02, 0x00, 0xF0, 0x1E, 0x00, 0xFC, 0xFF,
- /* 46*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x07, 0x00, 0xE0, 0xFF,
- /* 56*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x01, 0x00, 0xD8, 0xF0, 0x00, 0xD8, 0x01, 0x00, 0x00, 0x04, 0x00, 0xF0, 0xFF,
- /* 75*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x03, 0x00, 0xF8, 0x6E, 0x00, 0xFF, 0xFF,
- /* 88*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x08, 0x00, 0xF0, 0xF0, 0x00, 0xD0, 0x01, 0x00, 0x00, 0x05, 0x00, 0xF0, 0xF0, 0x00, 0xB8, 0xE6, 0x80, 0xFF, 0xE6, 0x80, 0xFF, 0xFF,
- /*116*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x05, 0x00, 0xD0, 0xFF,
- /*126*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x04, 0x00, 0xF8, 0xFF,
- /*136*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x03, 0x00, 0xF4, 0xE6, 0xC0, 0xFF, 0xE6, 0xC0, 0xFF, 0xFF,
- /*152*/ 0xF0, 0x00, 0xD0, 0x01, 0x00, 0x00, 0x02, 0x00, 0x10, 0x0E, 0x00, 0xFE, 0xFF,
- /*165*/ 0xF0, 0x00, 0xA8, 0x01, 0x00, 0x00, 0x18, 0x00, 0x02, 0xE6, 0x80, 0xFE, 0xE6, 0xC0, 0xFF, 0xFF,
- /*181*/ 0xF0, 0x00, 0xF8, 0x01, 0x00, 0x00, 0x02, 0x00, 0xF8, 0x02, 0x00, 0x00, 0x02, 0x00, 0xF0, 0x01, 0x00, 0xF8, 0x02, 0x00, 0x08, 0xF1, 0x99, 0xAF
-};
-
-static const uint16 lookup_table[87] = {
- 0x0D40, 0x0C80, 0x0BC0, 0x0B20, 0x0A80, 0x09E0, 0x0940, 0x08C0,
- 0x0840, 0x07E0, 0x0760, 0x0700, 0x06A0, 0x0640, 0x05E0, 0x0590,
- 0x0540, 0x04F0, 0x04A0, 0x0460, 0x0420, 0x03F0, 0x03B0, 0x0380,
- 0x0350, 0x0320, 0x02F0, 0x02C8, 0x02A0, 0x0278, 0x0250, 0x0230,
- 0x0210, 0x01F8, 0x01D8, 0x01C0, 0x01A8, 0x0190, 0x0178, 0x0164,
- 0x0150, 0x013C, 0x0128, 0x0118, 0x0108, 0x00FC, 0x00EC, 0x00E0,
- 0x00D4, 0x00C8, 0x00BC, 0x00B2, 0x00A8, 0x009E, 0x0094, 0x008C,
- 0x0084, 0x007E, 0x0076, 0x0070, 0x006A, 0x0064, 0x005E, 0x0059,
- 0x0054, 0x004F, 0x004A, 0x0046, 0x0042, 0x003F, 0x003B, 0x0038,
- 0x0035, 0x0032, 0x0030, 0x002D, 0x002A, 0x0028, 0x0026, 0x0024,
- 0x0022, 0x0020, 0x001E, 0x001C, 0x001B, 0x8E82, 0xB500
-};
-
-// B27B
-static const uint16 freq_offset[3] = {
- 0, 2, 9
-};
-
-static const uint16 freq_table[] = {
- 0x0000, 0x0800,
- 0xFFB0, 0xFFD1, 0xFFE8, 0xFFF1, 0x0005, 0x0000, 0x0800,
- 0xFF9C, 0xFFD8, 0x0000, 0x000F, 0x0005, 0x0000, 0x0800
-};
-
-static const int sound_table[13] = {
- 0, 2, 3, 4, 5, 6, 7, 8, 9, 11, 1, 10, 11
-};
-
-// 0xAE12
-// Note:
-// - offsets relative to data_table
-// - byte one of each sound was always 0x3F (= use all channels) -> removed from table
-static const uint16 sounds[13][6] = {
- { 481, 481, 481, 481, 481, 481 },
- { 395, 408, 467, 480, 480, 480 },
- { 85, 96, 109, 109, 109, 109 },
- { 110, 121, 134, 134, 134, 134 },
- { 135, 146, 159, 159, 159, 159 },
- { 160, 171, 184, 184, 184, 184 },
- { 185, 196, 209, 209, 209, 209 },
- { 210, 221, 234, 234, 234, 234 },
- { 235, 246, 259, 259, 259, 259 },
- { 260, 271, 284, 284, 284, 284 },
- { 285, 298, 311, 324, 335, 348 },
- { 349, 360, 361, 362, 373, 384 },
- { 0, 84, 84, 84, 84, 84 } // unused
-};
-
-// 0xB2A1
-static const byte data_table[482] = {
- /* 0*/ 0xE2, 0x0A, 0xE1, 0x0D, 0xE6, 0xED, 0xE0, 0x0F, 0xE2, 0x00, 0xE1, 0x00,
- 0xF2, 0xF2, 0xB2, 0xE1, 0x01, 0xF2, 0xF2, 0xB2, 0xE1, 0x02, 0xF2, 0xF2,
- 0xB2, 0xE1, 0x03, 0xF2, 0xF2, 0xB2, 0xE1, 0x04, 0xF2, 0xF2, 0xB2, 0xE1,
- 0x05, 0xF2, 0xF2, 0xB2, 0xE1, 0x06, 0xF2, 0xF2, 0xB2, 0xE1, 0x07, 0xF2,
- 0xF2, 0xB2, 0xE1, 0x08, 0xF2, 0xF2, 0xB2, 0xE1, 0x09, 0xF2, 0xF2, 0xB2,
- 0xE1, 0x0A, 0xF2, 0xF2, 0xB2, 0xE1, 0x0B, 0xF2, 0xF2, 0xB2, 0xE1, 0x0C,
- 0xF2, 0xF2, 0xB2, 0xE1, 0x0D, 0xF2, 0xF2, 0xB2, 0xFF, 0xD1, 0x03, 0xF3,
- /* 84*/ 0xFF,
-
- /* 85*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD3, 0x07, 0xFF,
- /* 96*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0x07, 0xFF,
- /*109*/ 0xFF,
-
- /*110*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD3, 0x27, 0xFF,
- /*121*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0x27, 0xFF,
- /*134*/ 0xFF,
-
- /*135*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD3, 0x47, 0xFF,
- /*146*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0x47, 0xFF,
- /*159*/ 0xFF,
-
- /*160*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD3, 0x57, 0xFF,
- /*171*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0x57, 0xFF,
- /*184*/ 0xFF,
-
- /*185*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD3, 0x77, 0xFF,
- /*196*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0x77, 0xFF,
- /*209*/ 0xFF,
-
- /*210*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD3, 0x97, 0xFF,
- /*221*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0x97, 0xFF,
- /*234*/ 0xFF,
-
- /*235*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD3, 0xB7, 0xFF,
- /*246*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0xB7, 0xFF,
- /*259*/ 0xFF,
-
- /*260*/ 0xE2, 0x0C, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD4, 0x07, 0xFF,
- /*271*/ 0xE2, 0x06, 0xE1, 0x02, 0xE0, 0x0F, 0xE6, 0xED, 0xD5, 0xF0, 0x0C, 0x07, 0xFF,
- /*284*/ 0xFF,
-
- /*285*/ 0xE2, 0x0B, 0xE1, 0x04, 0xE6, 0xED, 0xE0, 0x0A, 0xD0, 0xDB, 0x14, 0x0E, 0xFF,
- /*298*/ 0xE2, 0x0B, 0xE1, 0x04, 0xE6, 0xED, 0xE0, 0x0A, 0xD0, 0xDB, 0x32, 0x1E, 0xFF,
- /*311*/ 0xE2, 0x0B, 0xE1, 0x0B, 0xE6, 0xED, 0xE0, 0x0A, 0xD0, 0xDB, 0x50, 0x1E, 0xFF,
- /*324*/ 0xE2, 0x0B, 0xE1, 0x0B, 0xE6, 0xED, 0xE0, 0x0A, 0xD0, 0x0E, 0xFF,
- /*335*/ 0xE2, 0x0B, 0xE1, 0x02, 0xE6, 0xED, 0xE0, 0x0A, 0xD0, 0xDB, 0x0A, 0x0E, 0xFF,
- /*348*/ 0xFF,
-
- /*349*/ 0xE2, 0x03, 0xE1, 0x01, 0xE6, 0xED, 0xE0, 0x06, 0xD6, 0x17, 0xFF,
- /*360*/ 0xFF,
- /*361*/ 0xFF,
- /*362*/ 0xE2, 0x04, 0xE1, 0x04, 0xE6, 0xED, 0xE0, 0x06, 0xD5, 0xA7, 0xFF,
- /*373*/ 0xE2, 0x03, 0xE1, 0x06, 0xE6, 0xED, 0xE0, 0x06, 0xD6, 0x37, 0xFF,
- /*384*/ 0xE2, 0x04, 0xE1, 0x06, 0xE6, 0xED, 0xE0, 0x06, 0xD3, 0x87, 0xFF,
-
- /*395*/ 0xE2, 0x0C, 0xE1, 0x00, 0xE0, 0x04, 0xE6, 0xED, 0xD4, 0x0B, 0xE8, 0x0B, 0xFF,
- /*408*/ 0xE2, 0x0C, 0xE1, 0x03, 0xE0, 0x04, 0xE6, 0xED, 0xD4, 0xF0, 0x0C, 0x00,
- 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xE8, 0x00,
- 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xE8, 0x00,
- 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xE8, 0x00,
- 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xE8, 0x00, 0xE8, 0x10, 0xFF,
- /*467*/ 0xE2, 0x0C, 0xE1, 0x00, 0xE0, 0x04, 0xE6, 0xED, 0xD4, 0x1B, 0xE8, 0x1B, 0xFF,
- /*480*/ 0xFF,
-
- /*481*/ 0xFF
-};
-
-
-/*
- * PSG_HuC6280
- */
-
-class PSG_HuC6280 {
-private:
- typedef struct {
- uint16 frequency;
- uint8 control;
- uint8 balance;
- uint8 waveform[32];
- uint8 index;
- int16 dda;
- uint32 counter;
- } channel_t;
-
- double _clock;
- double _rate;
- uint8 _select;
- uint8 _balance;
- channel_t _channel[8];
- int16 _volumeTable[32];
- uint32 _noiseFreqTable[32];
- uint32 _waveFreqTable[4096];
-
-public:
- void init();
- void reset();
- void write(int offset, byte data);
- void update(int16* samples, int sampleCnt);
-
- PSG_HuC6280(double clock, double samplerate);
-};
-
-PSG_HuC6280::PSG_HuC6280(double clock, double samplerate) {
- _clock = clock;
- _rate = samplerate;
-
- // Initialize PSG_HuC6280 emulator
- init();
-}
-
-void PSG_HuC6280::init() {
- int i;
- double step;
-
- // Loudest volume level for table
- double level = 65535.0 / 6.0 / 32.0;
-
- // Clear context
- reset();
-
- // Make waveform frequency table
- for (i = 0; i < 4096; i++) {
- step = ((_clock / _rate) * 4096) / (i+1);
- _waveFreqTable[(1 + i) & 0xFFF] = (uint32)step;
- }
-
- // Make noise frequency table
- for (i = 0; i < 32; i++) {
- step = ((_clock / _rate) * 32) / (i+1);
- _noiseFreqTable[i] = (uint32)step;
- }
-
- // Make volume table
- // PSG_HuC6280 has 48dB volume range spread over 32 steps
- step = 48.0 / 32.0;
- for (i = 0; i < 31; i++) {
- _volumeTable[i] = (uint16)level;
- level /= pow(10.0, step / 20.0);
- }
- _volumeTable[31] = 0;
-}
-
-void PSG_HuC6280::reset() {
- _select = 0;
- _balance = 0xFF;
- memset(_channel, 0, sizeof(_channel));
- memset(_volumeTable, 0, sizeof(_volumeTable));
- memset(_noiseFreqTable, 0, sizeof(_noiseFreqTable));
- memset(_waveFreqTable, 0, sizeof(_waveFreqTable));
-}
-
-void PSG_HuC6280::write(int offset, byte data) {
- channel_t *chan = &_channel[_select];
-
- switch(offset & 0x0F) {
- case 0x00: // Channel select
- _select = data & 0x07;
- break;
-
- case 0x01: // Global balance
- _balance = data;
- break;
-
- case 0x02: // Channel frequency (LSB)
- chan->frequency = (chan->frequency & 0x0F00) | data;
- chan->frequency &= 0x0FFF;
- break;
-
- case 0x03: // Channel frequency (MSB)
- chan->frequency = (chan->frequency & 0x00FF) | (data << 8);
- chan->frequency &= 0x0FFF;
- break;
-
- case 0x04: // Channel control (key-on, DDA mode, volume)
- // 1-to-0 transition of DDA bit resets waveform index
- if ((chan->control & 0x40) && ((data & 0x40) == 0)) {
- chan->index = 0;
- }
- chan->control = data;
- break;
-
- case 0x05: // Channel balance
- chan->balance = data;
- break;
-
- case 0x06: // Channel waveform data
- switch(chan->control & 0xC0) {
- case 0x00:
- chan->waveform[chan->index & 0x1F] = data & 0x1F;
- chan->index = (chan->index + 1) & 0x1F;
- break;
-
- case 0x40:
- break;
-
- case 0x80:
- chan->waveform[chan->index & 0x1F] = data & 0x1F;
- chan->index = (chan->index + 1) & 0x1F;
- break;
-
- case 0xC0:
- chan->dda = data & 0x1F;
- break;
- }
-
- break;
-
- case 0x07: // Noise control (enable, frequency)
- case 0x08: // LFO frequency
- case 0x09: // LFO control (enable, mode)
- break;
-
- default:
- break;
- }
-}
-
-void PSG_HuC6280::update(int16* samples, int sampleCnt) {
- static const int scale_tab[] = {
- 0x00, 0x03, 0x05, 0x07, 0x09, 0x0B, 0x0D, 0x0F,
- 0x10, 0x13, 0x15, 0x17, 0x19, 0x1B, 0x1D, 0x1F
- };
- int ch;
- int i;
-
- int lmal = (_balance >> 4) & 0x0F;
- int rmal = (_balance >> 0) & 0x0F;
- int vll, vlr;
-
- lmal = scale_tab[lmal];
- rmal = scale_tab[rmal];
-
- // Clear buffer
- memset(samples, 0, 2 * sampleCnt * sizeof(int16));
-
- for (ch = 0; ch < 6; ch++) {
- // Only look at enabled channels
- if (_channel[ch].control & 0x80) {
- int lal = (_channel[ch].balance >> 4) & 0x0F;
- int ral = (_channel[ch].balance >> 0) & 0x0F;
- int al = _channel[ch].control & 0x1F;
-
- lal = scale_tab[lal];
- ral = scale_tab[ral];
-
- // Calculate volume just as the patent says
- vll = (0x1F - lal) + (0x1F - al) + (0x1F - lmal);
- if (vll > 0x1F) vll = 0x1F;
-
- vlr = (0x1F - ral) + (0x1F - al) + (0x1F - rmal);
- if (vlr > 0x1F) vlr = 0x1F;
-
- vll = _volumeTable[vll];
- vlr = _volumeTable[vlr];
-
- // Check channel mode
- if (_channel[ch].control & 0x40) {
- /* DDA mode */
- for (i = 0; i < sampleCnt; i++) {
- samples[2*i] += (int16)(vll * (_channel[ch].dda - 16));
- samples[2*i + 1] += (int16)(vlr * (_channel[ch].dda - 16));
- }
- } else {
- /* Waveform mode */
- uint32 step = _waveFreqTable[_channel[ch].frequency];
- for (i = 0; i < sampleCnt; i += 1) {
- int offset;
- int16 data;
- offset = (_channel[ch].counter >> 12) & 0x1F;
- _channel[ch].counter += step;
- _channel[ch].counter &= 0x1FFFF;
- data = _channel[ch].waveform[offset];
- samples[2*i] += (int16)(vll * (data - 16));
- samples[2*i + 1] += (int16)(vlr * (data - 16));
- }
- }
- }
- }
-}
-
-
-/*
- * Player_PCE
- */
-
-void Player_PCE::PSG_Write(int reg, byte data) {
- _psg->write(reg, data);
-}
-
-void Player_PCE::setupWaveform(byte bank) {
- const byte *ptr = wave_table[bank];
- PSG_Write(4, 0x40);
- PSG_Write(4, 0x00);
- for (int i = 0; i < 32; ++i) {
- PSG_Write(6, ptr[i]);
- }
-}
-
-// A541
-void Player_PCE::procA541(channel_t *channel) {
- channel->soundDataPtr = NULL;
- channel->controlVecShort10 = 0;
-
- channel->controlVecShort03 = 0;
- channel->controlVecShort06 = 0;
- channel->controlVec8 = 0;
- channel->controlVec9 = 0;
- channel->controlVec10 = 0;
- channel->soundUpdateCounter = 0;
- channel->controlVec18 = 0;
- channel->controlVec19 = 0;
- channel->controlVec23 = false;
- channel->controlVec24 = false;
- channel->controlVec21 = 0;
-
- channel->waveformCtrl = 0x80;
-}
-
-// A592
-void Player_PCE::startSound(int sound) {
- channel_t *channel;
- const uint16 *ptr = sounds[sound_table[sound]];
-
- for (int i = 0; i < 6; ++i) {
- channel = &channels[i];
- procA541(channel);
-
- channel->controlVec24 = true;
- channel->waveformCtrl = 0;
- channel->controlVec0 = 0;
- channel->controlVec19 = 0;
- channel->controlVec18 = 0;
- channel->soundDataPtr = &data_table[*ptr++];
- }
-}
-
-// A64B
-void Player_PCE::updateSound() {
- for (int i = 0; i < 12; i++) {
- channel_t *channel = &channels[i];
- bool cond = true;
- if (i < 6) {
- channel->controlVec21 ^= 0xFF;
- if (!channel->controlVec21)
- cond = false;
- }
- if (cond) {
- processSoundData(channel);
- procAB7F(channel);
- procAC24(channel);
- channel->controlVec11 = (channel->controlVecShort10 >> 11) | 0x80;
- channel->balance = channel->balance2;
- }
- }
-
- for (int i = 0; i < 6; ++i) {
- procA731(&channels[i]);
- }
-}
-
-int Player_PCE::readBuffer(int16 *buffer, const int numSamples) {
- int sampleCopyCnt;
- int samplesLeft = numSamples;
-
- Common::StackLock lock(_mutex);
-
- while (true) {
- // copy samples to output buffer
- sampleCopyCnt = (samplesLeft < _sampleBufferCnt) ? samplesLeft : _sampleBufferCnt;
- if (sampleCopyCnt > 0) {
- memcpy(buffer, _sampleBuffer, sampleCopyCnt * sizeof(int16));
- buffer += sampleCopyCnt;
- samplesLeft -= sampleCopyCnt;
- _sampleBufferCnt -= sampleCopyCnt;
- }
-
- if (samplesLeft == 0)
- break;
-
- // retrieve samples for one timer period
- updateSound();
- _psg->update(_sampleBuffer, _samplesPerPeriod / 2);
- _sampleBufferCnt = _samplesPerPeriod;
- }
-
- // copy remaining samples to the front of the buffer
- if (_sampleBufferCnt > 0) {
- memmove(&_sampleBuffer[0],
- &_sampleBuffer[_samplesPerPeriod - _sampleBufferCnt],
- _sampleBufferCnt * sizeof(int16));
- }
-
- return numSamples;
-}
-
-void Player_PCE::procA731(channel_t *channel) {
- PSG_Write(0, channel->id);
- PSG_Write(2, channel->freq & 0xFF);
- PSG_Write(3, (channel->freq >> 8) & 0xFF);
-
- int tmp = channel->controlVec11;
- if ((channel->controlVec11 & 0xC0) == 0x80) {
- tmp = channel->controlVec11 & 0x1F;
- if (tmp != 0) {
- tmp -= channel->controlVec0;
- if (tmp >= 0) {
- tmp |= 0x80;
- } else {
- tmp = 0;
- }
- }
- }
-
- PSG_Write(5, channel->balance);
- if ((channel->waveformCtrl & 0x80) == 0) {
- channel->waveformCtrl |= 0x80;
- PSG_Write(0, channel->id);
- setupWaveform(channel->waveformCtrl & 0x7F);
- }
-
- PSG_Write(4, tmp);
-}
-
-// A793
-void Player_PCE::processSoundData(channel_t *channel) {
- channel->soundUpdateCounter--;
- if (channel->soundUpdateCounter > 0) {
- return;
- }
-
- while (true) {
- const byte *ptr = channel->soundDataPtr;
- byte value = (ptr ? *ptr++ : 0xFF);
- if (value < 0xD0) {
- int mult = (value & 0x0F) + 1;
- channel->soundUpdateCounter = mult * channel->controlVec1;
- value >>= 4;
- procAA62(channel, value);
- channel->soundDataPtr = ptr;
- return;
- }
-
- // jump_table (A7F7)
- switch (value - 0xD0) {
- case 0: /*A85A*/
- case 1: /*A85D*/
- case 2: /*A861*/
- case 3: /*A865*/
- case 4: /*A869*/
- case 5: /*A86D*/
- case 6: /*A871*/
- channel->controlVec2 = (value - 0xD0) * 12;
- break;
- case 11: /*A8A8*/
- channel->controlVecShort06 = (int8)*ptr++;
- break;
- case 16: /*A8C2*/
- channel->controlVec1 = *ptr++;
- break;
- case 17: /*A8CA*/
- channel->waveformCtrl = *ptr++;
- break;
- case 18: /*A8D2*/
- channel->controlVec10 = *ptr++;
- break;
- case 22: /*A8F2*/
- value = *ptr;
- channel->balance = value;
- channel->balance2 = value;
- ptr++;
- break;
- case 24: /*A905*/
- channel->controlVec23 = true;
- break;
- case 32: /*A921*/
- ptr++;
- break;
- case 47:
- channel->controlVec24 = false;
- channel->controlVec10 &= 0x7F;
- channel->controlVecShort10 &= 0x00FF;
- return;
- default:
- // unused -> ignore
- break;
- }
-
- channel->soundDataPtr = ptr;
- }
-}
-
-void Player_PCE::procAA62(channel_t *channel, int a) {
- procACEA(channel, a);
- if (channel->controlVec23) {
- channel->controlVec23 = false;
- return;
- }
-
- channel->controlVec18 = 0;
-
- channel->controlVec10 |= 0x80;
- int y = channel->controlVec10 & 0x7F;
- channel->controlBufferPos = &control_data[control_offsets[y]];
- channel->controlVec5 = 0;
-}
-
-void Player_PCE::procAB7F(channel_t *channel) {
- uint16 freqValue = channel->controlVecShort02;
- channel->controlVecShort02 += channel->controlVecShort03;
-
- int pos = freq_offset[channel->controlVec19] + channel->controlVec18;
- freqValue += freq_table[pos];
- if (freq_table[pos + 1] != 0x0800) {
- channel->controlVec18++;
- }
- freqValue += channel->controlVecShort06;
-
- channel->freq = freqValue;
-}
-
-void Player_PCE::procAC24(channel_t *channel) {
- if ((channel->controlVec10 & 0x80) == 0)
- return;
-
- if (channel->controlVec5 == 0) {
- const byte *ctrlPtr = channel->controlBufferPos;
- byte value = *ctrlPtr++;
- while (value >= 0xF0) {
- if (value == 0xF0) {
- channel->controlVecShort10 = READ_LE_UINT16(ctrlPtr);
- ctrlPtr += 2;
- } else if (value == 0xFF) {
- channel->controlVec10 &= 0x7F;
- return;
- } else {
- // unused
- }
- value = *ctrlPtr++;
- }
- channel->controlVec5 = value;
- channel->controlVecShort09 = READ_LE_UINT16(ctrlPtr);
- ctrlPtr += 2;
- channel->controlBufferPos = ctrlPtr;
- }
-
- channel->controlVecShort10 += channel->controlVecShort09;
- channel->controlVec5--;
-}
-
-void Player_PCE::procACEA(channel_t *channel, int a) {
- int x = a +
- channel->controlVec2 +
- channel->controlVec8 +
- channel->controlVec9;
- channel->controlVecShort02 = lookup_table[x];
-}
-
-Player_PCE::Player_PCE(ScummEngine *scumm, Audio::Mixer *mixer) {
- for (int i = 0; i < 12; ++i) {
- memset(&channels[i], 0, sizeof(channel_t));
- channels[i].id = i;
- }
-
- _mixer = mixer;
- _sampleRate = _mixer->getOutputRate();
- _vm = scumm;
-
- _samplesPerPeriod = 2 * (int)(_sampleRate / UPDATE_FREQ);
- _sampleBuffer = new int16[_samplesPerPeriod];
- _sampleBufferCnt = 0;
-
- _psg = new PSG_HuC6280(PSG_CLOCK, _sampleRate);
-
- _mixer->playStream(Audio::Mixer::kPlainSoundType, &_soundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true);
-}
-
-Player_PCE::~Player_PCE() {
- _mixer->stopHandle(_soundHandle);
- delete[] _sampleBuffer;
- delete _psg;
-}
-
-void Player_PCE::stopSound(int nr) {
- // TODO: implement
-}
-
-void Player_PCE::stopAllSounds() {
- // TODO: implement
-}
-
-int Player_PCE::getSoundStatus(int nr) const {
- // TODO: status for each sound
- for (int i = 0; i < 6; ++i) {
- if (channels[i].controlVec24)
- return 1;
- }
- return 0;
-}
-
-int Player_PCE::getMusicTimer() {
- return 0;
-}
-
-} // End of namespace Scumm
-
-#endif // USE_RGB_COLOR