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authorAlyssa Milburn2012-09-22 12:53:01 +0200
committerAlyssa Milburn2012-09-22 13:20:58 +0200
commita081ae78eebc3f136198ca93ac079c454d9349e0 (patch)
tree865e585928b68eca4066c0f1b86461865e9cf447
parent636d3367d5597736ebf87c4a811128650de09d5e (diff)
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PARALLACTION: Add custom Adlib driver for BRA.
Thanks to peres for working out how it works in the original engine. Also, fix the length of MIDI events so it works properly.
-rw-r--r--engines/parallaction/adlib.cpp808
-rw-r--r--engines/parallaction/module.mk1
-rw-r--r--engines/parallaction/sound.h2
-rw-r--r--engines/parallaction/sound_br.cpp8
4 files changed, 818 insertions, 1 deletions
diff --git a/engines/parallaction/adlib.cpp b/engines/parallaction/adlib.cpp
new file mode 100644
index 0000000000..134e5cfbf3
--- /dev/null
+++ b/engines/parallaction/adlib.cpp
@@ -0,0 +1,808 @@
+/* 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.
+ *
+ */
+
+#include "common/debug.h"
+#include "common/system.h"
+
+#include "audio/fmopl.h"
+#include "audio/mpu401.h"
+#include "audio/softsynth/emumidi.h"
+
+namespace Parallaction {
+
+const uint kNumVoices = 9;
+// adlib FM voices 0-5
+const uint kNumMelodic = 6;
+// adlib FM voice 6 and 7-8
+const uint kNumPercussion = 5;
+
+// mask for maximum volume level
+#define LEVEL_MASK 0x7f
+
+struct OPLOperator {
+ uint8 characteristic; // amplitude modulation, vibrato, envelope, keyboard scaling, modulator frequency
+ uint8 levels;
+ uint8 attackDecay;
+ uint8 sustainRelease;
+ uint8 waveform;
+};
+
+struct MelodicProgram {
+ OPLOperator op[2];
+ uint8 feedbackAlgo;
+};
+
+struct PercussionNote {
+ OPLOperator op[2];
+ uint8 feedbackAlgo;
+ uint8 percussion;
+ uint8 valid;
+ uint16 frequency;
+ uint8 octave;
+};
+
+static const MelodicProgram melodicPrograms[128] = {
+ {{{ 0x1, 0x51, 0xf2, 0xb2, 0x0 }, { 0x11, 0x0, 0xf2, 0xa2, 0x0 }}, 0x0 },
+ {{{ 0xc2, 0x4b, 0xf1, 0x53, 0x0 }, { 0xd2, 0x0, 0xf2, 0x74, 0x0 }}, 0x4 },
+ {{{ 0x81, 0x9d, 0xf2, 0x74, 0x0 }, { 0x13, 0x0, 0xf2, 0xf1, 0x0 }}, 0x6 },
+ {{{ 0x3, 0x4f, 0xf1, 0x53, 0x0 }, { 0x17, 0x3, 0xf2, 0x74, 0x0 }}, 0x6 },
+ {{{ 0xd1, 0x81, 0x81, 0x73, 0x2 }, { 0xd4, 0x0, 0xe1, 0x34, 0x0 }}, 0x3 },
+ {{{ 0x1, 0x0, 0x94, 0xa6, 0x0 }, { 0x2, 0x0, 0x83, 0x26, 0x0 }}, 0x1 },
+ {{{ 0xf3, 0x84, 0x81, 0x2, 0x1 }, { 0x55, 0x80, 0xdd, 0x3, 0x0 }}, 0x4 },
+ {{{ 0x5, 0x8a, 0xf2, 0x26, 0x0 }, { 0x1, 0x80, 0xf3, 0x48, 0x0 }}, 0x0 },
+ {{{ 0x32, 0x0, 0xb1, 0x14, 0x0 }, { 0x12, 0x0, 0xfd, 0x36, 0x0 }}, 0x3 },
+ {{{ 0x1, 0x0, 0x82, 0xa, 0x2 }, { 0x2, 0x0, 0x85, 0x15, 0x0 }}, 0x3 },
+ {{{ 0xd1, 0x1, 0x97, 0xaa, 0x0 }, { 0x4, 0xd, 0xf3, 0xa5, 0x1 }}, 0x9 },
+ {{{ 0x17, 0x0, 0xf2, 0x62, 0x0 }, { 0x12, 0x0, 0xf2, 0x72, 0x0 }}, 0x8 },
+ {{{ 0x6, 0x0, 0xff, 0xf4, 0x0 }, { 0xc4, 0x0, 0xf8, 0xb5, 0x0 }}, 0xe },
+ {{{ 0xc0, 0x81, 0xf2, 0x13, 0x2 }, { 0xc0, 0xc1, 0xf3, 0x14, 0x2 }}, 0xb },
+ {{{ 0x44, 0x53, 0xf5, 0x31, 0x0 }, { 0x60, 0x80, 0xfd, 0x22, 0x0 }}, 0x6 },
+ {{{ 0xe0, 0x80, 0xf4, 0xf2, 0x0 }, { 0x61, 0x0, 0xf2, 0x6, 0x0 }}, 0x8 },
+ {{{ 0xc1, 0x6, 0x83, 0x23, 0x0 }, { 0xc1, 0x4, 0xf0, 0x26, 0x0 }}, 0x1 },
+ {{{ 0x26, 0x0, 0xf4, 0xb6, 0x0 }, { 0x21, 0x0, 0x81, 0x4b, 0x0 }}, 0x1 },
+ {{{ 0x24, 0x80, 0xff, 0xf, 0x0 }, { 0x21, 0x80, 0xff, 0xf, 0x0 }}, 0x1 },
+ {{{ 0x24, 0x4f, 0xf2, 0xb, 0x0 }, { 0x31, 0x0, 0x52, 0xb, 0x0 }}, 0xb },
+ {{{ 0x31, 0x8, 0x81, 0xb, 0x0 }, { 0xa1, 0x80, 0x92, 0x3b, 0x0 }}, 0x0 },
+ {{{ 0x70, 0xc5, 0x52, 0x11, 0x1 }, { 0x71, 0x80, 0x31, 0xfe, 0x1 }}, 0x0 },
+ {{{ 0x51, 0x88, 0x10, 0xf0, 0x0 }, { 0x42, 0x83, 0x40, 0xfc, 0x0 }}, 0x8 },
+ {{{ 0xf0, 0xd9, 0x81, 0x3, 0x0 }, { 0xb1, 0x80, 0xf1, 0x5, 0x0 }}, 0xa },
+ {{{ 0x21, 0x4f, 0xf1, 0x31, 0x0 }, { 0x2, 0x80, 0xc3, 0x45, 0x0 }}, 0x0 },
+ {{{ 0x7, 0x8f, 0x9c, 0x33, 0x1 }, { 0x1, 0x80, 0x8a, 0x13, 0x0 }}, 0x0 },
+ {{{ 0x21, 0x40, 0xf1, 0x31, 0x0 }, { 0x6, 0x80, 0xf4, 0x44, 0x0 }}, 0x0 },
+ {{{ 0x21, 0x40, 0xf1, 0x31, 0x3 }, { 0x81, 0x0, 0xf4, 0x44, 0x2 }}, 0x2 },
+ {{{ 0x11, 0x8d, 0xfd, 0x11, 0x0 }, { 0x11, 0x80, 0xfd, 0x11, 0x0 }}, 0x8 },
+ {{{ 0xf0, 0x1, 0x97, 0x17, 0x0 }, { 0x21, 0xd, 0xf1, 0x18, 0x0 }}, 0x8 },
+ {{{ 0xf1, 0x1, 0x97, 0x17, 0x0 }, { 0x21, 0xd, 0xf1, 0x18, 0x0 }}, 0x8 },
+ {{{ 0xcd, 0x9e, 0x55, 0xd1, 0x0 }, { 0xd1, 0x0, 0xf2, 0x71, 0x0 }}, 0xe },
+ {{{ 0x1, 0x0, 0xf2, 0x88, 0x0 }, { 0x1, 0x0, 0xf5, 0x88, 0x0 }}, 0x1 },
+ {{{ 0x30, 0xd, 0xf2, 0xef, 0x0 }, { 0x21, 0x0, 0xf5, 0x78, 0x0 }}, 0x6 },
+ {{{ 0x0, 0x10, 0xf4, 0xd9, 0x0 }, { 0x0, 0x0, 0xf5, 0xd7, 0x0 }}, 0x4 },
+ {{{ 0x1, 0x4c, 0xf2, 0x50, 0x0 }, { 0x1, 0x40, 0xd2, 0x59, 0x0 }}, 0x8 },
+ {{{ 0x20, 0x11, 0xe2, 0x8a, 0x0 }, { 0x20, 0x0, 0xe4, 0xa8, 0x0 }}, 0xa },
+ {{{ 0x21, 0x40, 0x7b, 0x4, 0x1 }, { 0x21, 0x0, 0x75, 0x72, 0x0 }}, 0x2 },
+ {{{ 0x31, 0xd, 0xf2, 0xef, 0x0 }, { 0x21, 0x0, 0xf5, 0x78, 0x0 }}, 0xa },
+ {{{ 0x1, 0xc, 0xf5, 0x2f, 0x1 }, { 0x0, 0x80, 0xf5, 0x5c, 0x0 }}, 0x0 },
+ {{{ 0xb0, 0x1c, 0x81, 0x3, 0x2 }, { 0x20, 0x0, 0x54, 0x67, 0x2 }}, 0xe },
+ {{{ 0x1, 0x0, 0xf1, 0x65, 0x0 }, { 0x1, 0x80, 0xa3, 0xa8, 0x2 }}, 0x1 },
+ {{{ 0xe1, 0x4f, 0xc1, 0xd3, 0x2 }, { 0x21, 0x0, 0x32, 0x74, 0x1 }}, 0x0 },
+ {{{ 0x2, 0x0, 0xf6, 0x16, 0x0 }, { 0x12, 0x0, 0xf2, 0xf8, 0x0 }}, 0x1 },
+ {{{ 0xe0, 0x63, 0xf8, 0xf3, 0x0 }, { 0x70, 0x80, 0xf7, 0xf3, 0x0 }}, 0x4 },
+ {{{ 0x1, 0x6, 0xf3, 0xff, 0x0 }, { 0x8, 0x0, 0xf7, 0xff, 0x0 }}, 0x4 },
+ {{{ 0x21, 0x16, 0xb0, 0x81, 0x1 }, { 0x22, 0x0, 0xb3, 0x13, 0x1 }}, 0xc },
+ {{{ 0x1, 0x4f, 0xf0, 0xff, 0x0 }, { 0x30, 0x0, 0x90, 0xf, 0x0 }}, 0x6 },
+ {{{ 0x0, 0x10, 0xf1, 0xf2, 0x2 }, { 0x1, 0x0, 0xf1, 0xf2, 0x3 }}, 0x0 },
+ {{{ 0x1, 0x4f, 0xf1, 0x50, 0x0 }, { 0x21, 0x80, 0xa3, 0x5, 0x3 }}, 0x6 },
+ {{{ 0xb1, 0x3, 0x55, 0x3, 0x0 }, { 0xb1, 0x3, 0x8, 0xa, 0x0 }}, 0x9 },
+ {{{ 0x22, 0x0, 0xa9, 0x34, 0x1 }, { 0x1, 0x0, 0xa2, 0x42, 0x2 }}, 0x2 },
+ {{{ 0xa0, 0xdc, 0x81, 0x31, 0x3 }, { 0xb1, 0x80, 0xf1, 0x1, 0x3 }}, 0x0 },
+ {{{ 0x1, 0x4f, 0xf1, 0x50, 0x0 }, { 0x21, 0x80, 0xa3, 0x5, 0x3 }}, 0x6 },
+ {{{ 0xf1, 0x80, 0xa0, 0x72, 0x0 }, { 0x74, 0x0, 0x90, 0x22, 0x0 }}, 0x9 },
+ {{{ 0xe1, 0x13, 0x71, 0xae, 0x0 }, { 0xe1, 0x0, 0xf0, 0xfc, 0x1 }}, 0xa },
+ {{{ 0x31, 0x1c, 0x41, 0xb, 0x0 }, { 0xa1, 0x80, 0x92, 0x3b, 0x0 }}, 0xe },
+ {{{ 0x71, 0x1c, 0x41, 0x1f, 0x0 }, { 0xa1, 0x80, 0x92, 0x3b, 0x0 }}, 0xe },
+ {{{ 0x21, 0x1c, 0x53, 0x1d, 0x0 }, { 0xa1, 0x80, 0x52, 0x3b, 0x0 }}, 0xc },
+ {{{ 0x21, 0x1d, 0xa4, 0xae, 0x1 }, { 0x21, 0x0, 0xb1, 0x9e, 0x0 }}, 0xc },
+ {{{ 0xe1, 0x16, 0x71, 0xae, 0x0 }, { 0xe1, 0x0, 0x81, 0x9e, 0x0 }}, 0xa },
+ {{{ 0xe1, 0x15, 0x71, 0xae, 0x0 }, { 0xe2, 0x0, 0x81, 0x9e, 0x0 }}, 0xe },
+ {{{ 0x21, 0x16, 0x71, 0xae, 0x0 }, { 0x21, 0x0, 0x81, 0x9e, 0x0 }}, 0xe },
+ {{{ 0x71, 0x1c, 0x41, 0x1f, 0x0 }, { 0xa1, 0x80, 0x92, 0x3b, 0x0 }}, 0xe },
+ {{{ 0x21, 0x4f, 0x81, 0x53, 0x0 }, { 0x32, 0x0, 0x22, 0x2c, 0x0 }}, 0xa },
+ {{{ 0x22, 0x4f, 0x81, 0x53, 0x0 }, { 0x32, 0x0, 0x22, 0x2c, 0x0 }}, 0xa },
+ {{{ 0x23, 0x4f, 0x81, 0x53, 0x0 }, { 0x34, 0x0, 0x22, 0x2c, 0x0 }}, 0xa },
+ {{{ 0xe1, 0x16, 0x71, 0xae, 0x0 }, { 0xe1, 0x0, 0x81, 0x9e, 0x0 }}, 0xa },
+ {{{ 0x71, 0xc5, 0x6e, 0x17, 0x0 }, { 0x22, 0x5, 0x8b, 0xe, 0x0 }}, 0x2 },
+ {{{ 0xe6, 0x27, 0x70, 0xf, 0x1 }, { 0xe3, 0x0, 0x60, 0x9f, 0x0 }}, 0xa },
+ {{{ 0x30, 0xc8, 0xd5, 0x19, 0x0 }, { 0xb1, 0x80, 0x61, 0x1b, 0x0 }}, 0xc },
+ {{{ 0x32, 0x9a, 0x51, 0x1b, 0x0 }, { 0xa1, 0x82, 0xa2, 0x3b, 0x0 }}, 0xc },
+ {{{ 0xad, 0x3, 0x74, 0x29, 0x0 }, { 0xa2, 0x82, 0x73, 0x29, 0x0 }}, 0x7 },
+ {{{ 0x21, 0x83, 0x74, 0x17, 0x0 }, { 0x62, 0x8d, 0x65, 0x17, 0x0 }}, 0x7 },
+ {{{ 0x94, 0xb, 0x85, 0xff, 0x1 }, { 0x13, 0x0, 0x74, 0xff, 0x0 }}, 0xc },
+ {{{ 0x74, 0x87, 0xa4, 0x2, 0x0 }, { 0xd6, 0x80, 0x45, 0x42, 0x0 }}, 0x2 },
+ {{{ 0xb3, 0x85, 0x76, 0x21, 0x1 }, { 0x20, 0x0, 0x3d, 0xc1, 0x0 }}, 0x6 },
+ {{{ 0x17, 0x4f, 0xf2, 0x61, 0x0 }, { 0x12, 0x8, 0xf1, 0xb4, 0x0 }}, 0x8 },
+ {{{ 0x4f, 0x86, 0x65, 0x1, 0x0 }, { 0x1f, 0x0, 0x32, 0x74, 0x0 }}, 0x4 },
+ {{{ 0xe1, 0x23, 0x71, 0xae, 0x0 }, { 0xe4, 0x0, 0x82, 0x9e, 0x0 }}, 0xa },
+ {{{ 0x11, 0x86, 0xf2, 0xbd, 0x0 }, { 0x4, 0x80, 0xa0, 0x9b, 0x1 }}, 0x8 },
+ {{{ 0x20, 0x90, 0xf5, 0x9e, 0x2 }, { 0x11, 0x0, 0xf4, 0x5b, 0x3 }}, 0xc },
+ {{{ 0xf0, 0x80, 0x34, 0xe4, 0x0 }, { 0x7e, 0x0, 0xa2, 0x6, 0x0 }}, 0x8 },
+ {{{ 0x90, 0xf, 0xff, 0x1, 0x3 }, { 0x0, 0x0, 0x1f, 0x1, 0x0 }}, 0xe },
+ {{{ 0x1, 0x4f, 0xf0, 0xff, 0x0 }, { 0x33, 0x0, 0x90, 0xf, 0x0 }}, 0x6 },
+ {{{ 0x1e, 0x0, 0x1f, 0xf, 0x0 }, { 0x10, 0x0, 0x1f, 0x7f, 0x0 }}, 0x0 },
+ {{{ 0xbe, 0x0, 0xf1, 0x1, 0x3 }, { 0x31, 0x0, 0xf1, 0x1, 0x0 }}, 0x4 },
+ {{{ 0xbe, 0x0, 0xf1, 0x1, 0x3 }, { 0x31, 0x0, 0xf1, 0x1, 0x0 }}, 0x4 },
+ {{{ 0x93, 0x6, 0xc1, 0x4, 0x1 }, { 0x82, 0x0, 0x51, 0x9, 0x0 }}, 0x6 },
+ {{{ 0xa0, 0x0, 0x96, 0x33, 0x0 }, { 0x20, 0x0, 0x55, 0x2b, 0x0 }}, 0x6 },
+ {{{ 0x0, 0xc0, 0xff, 0x5, 0x0 }, { 0x0, 0x0, 0xff, 0x5, 0x3 }}, 0x0 },
+ {{{ 0x4, 0x8, 0xf8, 0x7, 0x0 }, { 0x1, 0x0, 0x82, 0x74, 0x0 }}, 0x8 },
+ {{{ 0x0, 0x0, 0x2f, 0x5, 0x0 }, { 0x20, 0x0, 0xff, 0x5, 0x3 }}, 0xa },
+ {{{ 0x93, 0x0, 0xf7, 0x7, 0x2 }, { 0x0, 0x0, 0xf7, 0x7, 0x0 }}, 0xa },
+ {{{ 0x0, 0x40, 0x80, 0x7a, 0x0 }, { 0xc4, 0x0, 0xc0, 0x7e, 0x0 }}, 0x8 },
+ {{{ 0x90, 0x80, 0x55, 0xf5, 0x0 }, { 0x0, 0x0, 0x55, 0xf5, 0x0 }}, 0x8 },
+ {{{ 0xe1, 0x80, 0x34, 0xe4, 0x0 }, { 0x69, 0x0, 0xf2, 0x6, 0x0 }}, 0x8 },
+ {{{ 0x3, 0x2, 0xf0, 0xff, 0x3 }, { 0x11, 0x80, 0xf0, 0xff, 0x2 }}, 0x2 },
+ {{{ 0x1e, 0x0, 0x1f, 0xf, 0x0 }, { 0x10, 0x0, 0x1f, 0x7f, 0x0 }}, 0x0 },
+ {{{ 0x0, 0x0, 0x2f, 0x1, 0x0 }, { 0x0, 0x0, 0xff, 0x1, 0x0 }}, 0x4 },
+ {{{ 0xbe, 0x0, 0xf1, 0x1, 0x3 }, { 0x31, 0x0, 0xf1, 0x1, 0x0 }}, 0x4 },
+ {{{ 0x93, 0x85, 0x3f, 0x6, 0x1 }, { 0x0, 0x0, 0x5f, 0x7, 0x0 }}, 0x6 },
+ {{{ 0x6, 0x0, 0xa0, 0xf0, 0x0 }, { 0x44, 0x0, 0xc5, 0x75, 0x0 }}, 0xe },
+ {{{ 0x60, 0x0, 0x10, 0x81, 0x0 }, { 0x20, 0x8c, 0x12, 0x91, 0x0 }}, 0xe },
+ {{{ 0x1, 0x40, 0xf1, 0x53, 0x0 }, { 0x8, 0x40, 0xf1, 0x53, 0x0 }}, 0x0 },
+ {{{ 0x31, 0x0, 0x56, 0x31, 0x0 }, { 0x16, 0x0, 0x7d, 0x41, 0x0 }}, 0x0 },
+ {{{ 0x0, 0x10, 0xf2, 0x72, 0x0 }, { 0x13, 0x0, 0xf2, 0x72, 0x0 }}, 0xc },
+ {{{ 0x10, 0x0, 0x75, 0x93, 0x1 }, { 0x1, 0x0, 0xf5, 0x82, 0x1 }}, 0x0 },
+ {{{ 0x0, 0x0, 0xf6, 0xff, 0x2 }, { 0x0, 0x0, 0xf6, 0xff, 0x0 }}, 0x8 },
+ {{{ 0x30, 0x0, 0xff, 0xa0, 0x3 }, { 0x63, 0x0, 0x65, 0xb, 0x2 }}, 0x0 },
+ {{{ 0x2a, 0x0, 0xf6, 0x87, 0x0 }, { 0x2b, 0x0, 0x76, 0x25, 0x0 }}, 0x0 },
+ {{{ 0x85, 0x0, 0xb8, 0x84, 0x0 }, { 0x43, 0x0, 0xe5, 0x8f, 0x0 }}, 0x6 },
+ {{{ 0x7, 0x4f, 0xf2, 0x60, 0x0 }, { 0x12, 0x0, 0xf2, 0x72, 0x0 }}, 0x8 },
+ {{{ 0x5, 0x40, 0xb3, 0xd3, 0x0 }, { 0x86, 0x80, 0xf2, 0x24, 0x0 }}, 0x2 },
+ {{{ 0xd0, 0x0, 0x11, 0xcf, 0x0 }, { 0xd1, 0x0, 0xf4, 0xe8, 0x3 }}, 0x0 },
+ {{{ 0x5, 0x4e, 0xda, 0x25, 0x2 }, { 0x1, 0x0, 0xf9, 0x15, 0x0 }}, 0xa },
+ {{{ 0x3, 0x0, 0x8f, 0x7, 0x2 }, { 0x2, 0x0, 0xff, 0x6, 0x0 }}, 0x0 },
+ {{{ 0x13, 0x0, 0x8f, 0x7, 0x2 }, { 0x2, 0x0, 0xf9, 0x5, 0x0 }}, 0x0 },
+ {{{ 0xf0, 0x1, 0x97, 0x17, 0x0 }, { 0x21, 0xd, 0xf1, 0x18, 0x0 }}, 0x8 },
+ {{{ 0xf1, 0x41, 0x11, 0x11, 0x0 }, { 0xf1, 0x41, 0x11, 0x11, 0x0 }}, 0x2 },
+ {{{ 0x13, 0x0, 0x8f, 0x7, 0x2 }, { 0x2, 0x0, 0xff, 0x6, 0x0 }}, 0x0 },
+ {{{ 0x1, 0x0, 0x2f, 0x1, 0x0 }, { 0x1, 0x0, 0xaf, 0x1, 0x3 }}, 0xf },
+ {{{ 0x1, 0x6, 0xf3, 0xff, 0x0 }, { 0x8, 0x0, 0xf7, 0xff, 0x0 }}, 0x4 },
+ {{{ 0xc0, 0x4f, 0xf1, 0x3, 0x0 }, { 0xbe, 0xc, 0x10, 0x1, 0x0 }}, 0x2 },
+ {{{ 0x0, 0x2, 0xf0, 0xff, 0x0 }, { 0x11, 0x80, 0xf0, 0xff, 0x0 }}, 0x6 },
+ {{{ 0x81, 0x47, 0xf1, 0x83, 0x0 }, { 0xa2, 0x4, 0x91, 0x86, 0x0 }}, 0x6 },
+ {{{ 0xf0, 0xc0, 0xff, 0xff, 0x3 }, { 0xe5, 0x0, 0xfb, 0xf0, 0x0 }}, 0xe },
+ {{{ 0x0, 0x2, 0xf0, 0xff, 0x0 }, { 0x11, 0x80, 0xf0, 0xff, 0x0 }}, 0x6 }
+};
+
+static const PercussionNote percussionNotes[47] = {
+ {{{ 0x0, 0xb, 0xa8, 0x38, 0x0 }, { 0x0, 0x0, 0xd6, 0x49, 0x0 }}, 0x0, 0x4, 0x1, 0x97, 0x4 },
+ {{{ 0xc0, 0xc0, 0xf8, 0x3f, 0x2 }, { 0xc0, 0x0, 0xf6, 0x8e, 0x0 }}, 0x0, 0x4, 0x1, 0xf7, 0x4 },
+ {{{ 0xc0, 0x80, 0xc9, 0xab, 0x0 }, { 0xeb, 0x40, 0xb5, 0xf6, 0x0 }}, 0x1, 0x3, 0x1, 0x6a, 0x6 },
+ {{{ 0xc, 0x0, 0xd8, 0xa6, 0x0 }, { 0x0, 0x0, 0xd6, 0x4f, 0x0 }}, 0x1, 0x3, 0x1, 0x6c, 0x5 },
+ {{{ 0x1, 0x0, 0xe2, 0xd2, 0x0 }, { 0x3, 0x41, 0x8f, 0x48, 0x49 }}, 0xc, 0x4, 0x1, 0x2f, 0x5 },
+ {{{ 0x0, 0x0, 0xc8, 0x58, 0x3 }, { 0x0, 0x0, 0xf6, 0x4f, 0x0 }}, 0x9, 0x3, 0x1, 0x108, 0x4 },
+ {{{ 0x1, 0x0, 0xff, 0x5, 0x0 }, { 0xf2, 0xff, 0xe0, 0x50, 0x52 }}, 0x5d, 0x2, 0x1, 0x9f, 0x5 },
+ {{{ 0xe, 0x9, 0xb9, 0x47, 0x0 }, { 0xeb, 0x40, 0xf5, 0xe6, 0x0 }}, 0x0, 0x0, 0x1, 0x82, 0x6 },
+ {{{ 0x0, 0x0, 0xd6, 0x83, 0x0 }, { 0xd6, 0xd7, 0xe0, 0x41, 0x5e }}, 0x4a, 0x2, 0x1, 0xc7, 0x5 },
+ {{{ 0x1, 0x9, 0x89, 0x67, 0x0 }, { 0xd6, 0xd7, 0xe0, 0x41, 0x5e }}, 0x4a, 0x0, 0x1, 0x80, 0x6 },
+ {{{ 0x1, 0x0, 0xd6, 0x96, 0x0 }, { 0xd6, 0xd7, 0xe0, 0x41, 0x5e }}, 0x4a, 0x2, 0x1, 0xed, 0x5 },
+ {{{ 0x0, 0x9, 0xa9, 0x55, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x1, 0x82, 0x6 },
+ {{{ 0x2, 0x0, 0xc6, 0x96, 0x0 }, { 0xe0, 0x0, 0xe0, 0x40, 0x0 }}, 0x1, 0x2, 0x1, 0x123, 0x5 },
+ {{{ 0x5, 0x0, 0xf6, 0x56, 0x0 }, { 0xf7, 0xff, 0xb3, 0x90, 0x4f }}, 0x1, 0x2, 0x1, 0x15b, 0x5 },
+ {{{ 0x1, 0x0, 0xf7, 0x14, 0x0 }, { 0xf7, 0xff, 0x36, 0x90, 0x79 }}, 0xe7, 0x1, 0x1, 0x1ac, 0x5 },
+ {{{ 0x0, 0x0, 0xf6, 0x56, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x1, 0x2, 0x1, 0x18b, 0x5 },
+ {{{ 0x0, 0x83, 0xfb, 0x5, 0x0 }, { 0xf7, 0x41, 0x39, 0x90, 0x79 }}, 0x1, 0x1, 0x1, 0xc8, 0x5 },
+ {{{ 0x0, 0x0, 0xff, 0x5, 0x0 }, { 0xf7, 0xff, 0x36, 0x90, 0x79 }}, 0xe7, 0x1, 0x1, 0xf9, 0x5 },
+ {{{ 0x1, 0x0, 0xa0, 0x5, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x2, 0x1, 0x27a, 0x6 },
+ {{{ 0x0, 0x5, 0xf3, 0x6, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x2, 0x1, 0x108, 0x7 },
+ {{{ 0x1, 0x0, 0xf9, 0x34, 0x0 }, { 0xf7, 0xff, 0x36, 0x90, 0x79 }}, 0xe7, 0x1, 0x1, 0x147, 0x4 },
+ {{{ 0x0, 0x0, 0xf7, 0x16, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x2, 0x1, 0x120, 0x6 },
+ {{{ 0x1, 0x0, 0xff, 0x5, 0x0 }, { 0xf7, 0xff, 0x36, 0x90, 0x79 }}, 0xe7, 0x1, 0x1, 0x42, 0x6 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x1, 0x0, 0xff, 0x5, 0x0 }, { 0xf7, 0xff, 0x36, 0x90, 0x79 }}, 0xe7, 0x1, 0x1, 0x6d, 0x5 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 },
+ {{{ 0x0, 0x0, 0x0, 0x0, 0x0 }, { 0x0, 0x0, 0x0, 0x0, 0x0 }}, 0x0, 0x0, 0x0, 0x3fc, 0x4 }
+};
+
+const uint16 melodicFrequencies[36] = {
+ 0x55, 0x5a, 0x60, 0x66, 0x6c, 0x72, 0x79, 0x80, 0x88,
+ 0x90, 0x99, 0xa1, 0xab, 0xb5, 0xc0, 0xcc, 0xd8, 0xe5,
+ 0xf2, 0x101, 0x110, 0x120, 0x132, 0x143, 0x156, 0x16b, 0x181,
+ 0x198, 0x1b0, 0x1ca, 0x1e5, 0x202, 0x220, 0x241, 0x263, 0x286
+};
+
+class AdLibDriver;
+
+class AdLibChannel : public MidiChannel_MPU401 {
+public:
+ void reset();
+
+ uint8 _program;
+ uint8 _volume;
+ uint8 _pedal;
+};
+
+struct MelodicVoice {
+ bool _used;
+ uint8 _channel;
+ uint8 _program;
+
+ uint8 _key;
+ uint32 _timestamp;
+ uint16 _frequency;
+ int8 _octave;
+};
+
+class AdLibDriver : public MidiDriver_Emulated {
+public:
+ AdLibDriver(Audio::Mixer *mixer) : MidiDriver_Emulated(mixer) {
+ for (uint i = 0; i < 16; ++i)
+ _channels[i].init(this, i);
+ }
+
+ int open();
+ void close();
+ void send(uint32 b);
+ MidiChannel *allocateChannel();
+ MidiChannel *getPercussionChannel() { return &_channels[9]; }
+
+ bool isStereo() const { return false; }
+ int getRate() const { return _mixer->getOutputRate(); }
+
+ void generateSamples(int16 *buf, int len);
+
+protected:
+ OPL::OPL *_opl;
+ AdLibChannel _channels[16];
+ MelodicVoice _voices[kNumMelodic];
+ uint8 _notesPerPercussion[kNumPercussion];
+
+ uint _lastVoice;
+
+ uint8 _percussionMask;
+
+ void noteOff(uint8 channel, uint8 note);
+ void noteOn(uint8 channel, uint8 note, uint8 velocity);
+ void allNotesOff();
+ void setModulationWheel(uint8 channel, uint8 value);
+ void setFootController(uint8 channel, uint8 value);
+ void setVolume(uint8 channel, uint8 value);
+ void setPitchBend(uint8 channel, int16 value);
+
+ void playNote(uint8 voice, uint8 octave, uint16 frequency);
+
+ void programOperatorSimple(uint8 offset, const OPLOperator &op);
+ void programOperator(uint8 offset, const OPLOperator &op);
+ void setOperatorLevel(uint8 offset, const OPLOperator &op, uint8 velocity, uint8 channel, bool forceVolume);
+
+ void setupPercussion(const PercussionNote &note);
+ void playPercussion(uint8 channel, const PercussionNote &note, uint8 velocity);
+
+ void programMelodicVoice(uint8 voice, uint8 program);
+ void playMelodicNote(uint8 voice, uint8 channel, uint8 note, uint8 velocity);
+ void muteMelodicVoice(uint8 voice);
+
+ void initVoices();
+};
+
+MidiDriver *createAdLibDriver() {
+ return new AdLibDriver(g_system->getMixer());
+}
+
+void AdLibChannel::reset() {
+ _program = 0;
+ _volume = 127;
+ _pedal = 0;
+}
+
+/*
+ bit 7 - Clear: AM depth is 1 dB
+ bit 6 - Clear: Vibrato depth is 7 cent
+ bit 5 - Set: Rhythm enabled (6 melodic voices)
+ bit 4 - Bass drum off
+ bit 3 - Snare drum off
+ bit 2 - Tom tom off
+ bit 1 - Cymbal off
+ bit 0 - Hi Hat off
+*/
+const uint8 kDefaultPercussionMask = 0x20;
+
+int AdLibDriver::open() {
+ if (_isOpen)
+ return MERR_ALREADY_OPEN;
+
+ MidiDriver_Emulated::open();
+
+ _opl = OPL::Config::create();
+ _opl->init(getRate());
+ _opl->writeReg(0x1, 0x20); // set bit 5 (enable all waveforms)
+
+ // Reset the OPL registers.
+ for (uint i = 0; i < kNumVoices; ++i) {
+ _opl->writeReg(0xA0 + i, 0); // frequency
+ _opl->writeReg(0xB0 + i, 0); // key on
+ _opl->writeReg(0xC0 + i, 0); // feedback
+ }
+ _opl->writeReg(0xBD, kDefaultPercussionMask);
+
+ initVoices();
+
+ _mixer->playStream(Audio::Mixer::kMusicSoundType, &_mixerSoundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, DisposeAfterUse::NO, true);
+ return 0;
+}
+
+void AdLibDriver::close() {
+ if (!_isOpen)
+ return;
+
+ _isOpen = false;
+ _mixer->stopHandle(_mixerSoundHandle);
+
+ delete _opl;
+}
+
+void AdLibDriver::send(uint32 b) {
+ uint channel = b & 0xf;
+ uint cmd = (b >> 4) & 0xf;
+ uint param1 = (b >> 8) & 0xff;
+ uint param2 = (b >> 16) & 0xff;
+
+ switch (cmd) {
+ case 8:
+ noteOff(channel, param1);
+ break;
+ case 9:
+ // TODO: map volume?
+ noteOn(channel, param1, param2);
+ break;
+ case 11:
+ // controller change
+ switch (param1) {
+ case 1:
+ setModulationWheel(channel, param2);
+ break;
+ case 4:
+ setFootController(channel, param2);
+ break;
+ case 7:
+ setVolume(channel, param2);
+ break;
+ case 123:
+ // all notes off
+ allNotesOff();
+ break;
+ }
+ break;
+ case 12:
+ // program change
+ _channels[channel]._program = param1;
+ break;
+ case 14:
+ setPitchBend(channel, (param1 | (param2 << 7)) - 0x2000);
+ break;
+ }
+}
+
+void AdLibDriver::noteOff(uint8 channel, uint8 note) {
+ if (channel == 9) {
+ if (note < 35 || note > 81)
+ return;
+
+ _percussionMask &= ~(1 << percussionNotes[note - 35].percussion);
+ _opl->writeReg(0xBD, _percussionMask);
+ return;
+ }
+
+ for (int i = kNumMelodic - 1; i >= 0; --i) {
+ if (_voices[i]._channel != channel)
+ continue;
+ if (_voices[i]._key != note)
+ continue;
+ muteMelodicVoice(i);
+ _voices[i]._used = false;
+ return;
+ }
+
+ //debug(1, "failed to find voice off for channel %d, note %d", channel, note);
+}
+
+void AdLibDriver::noteOn(uint8 channel, uint8 note, uint8 velocity) {
+ if (channel == 9) {
+ if (note < 35 || note > 81)
+ return;
+
+ const PercussionNote &info = percussionNotes[note - 35];
+ if (!info.valid)
+ return;
+
+ if (note != _notesPerPercussion[info.percussion]) {
+ setupPercussion(info);
+ _notesPerPercussion[info.percussion] = note;
+ }
+
+ playPercussion(channel, info, velocity);
+ return;
+ }
+
+ if (velocity == 0) {
+ noteOff(channel, note);
+ return;
+ }
+
+ // We want to play a note on a melodic (voice) channel.
+
+ // First, look for a voice playing the same note with the same program.
+ for (uint i = 0; i < kNumMelodic; ++i) {
+ if (_voices[i]._channel != channel || _voices[i]._key != note)
+ continue;
+ if (_voices[i]._program != _channels[channel]._program)
+ continue;
+ muteMelodicVoice(i);
+ playMelodicNote(i, channel, note, velocity);
+ return;
+ }
+
+ // The loops below try to start at _lastVoice and find a voice to use.
+ // They ignore _lastVoice itself, and update _lastVoice if they succeed.
+
+ // Then, try finding a melodic voice with the same program.
+ for (uint i = (_lastVoice + 1) % kNumMelodic; i != _lastVoice; i = (i + 1) % kNumMelodic) {
+ if (_voices[i]._used)
+ continue;
+ if (_voices[i]._program != _channels[channel]._program)
+ continue;
+ playMelodicNote(i, channel, note, velocity);
+ _lastVoice = i;
+ return;
+ }
+
+ // Then, try finding a free melodic voice of any kind.
+ for (uint i = (_lastVoice + 1) % kNumMelodic; i != _lastVoice; i = (i + 1) % kNumMelodic) {
+ if (_voices[i]._used)
+ continue;
+ programMelodicVoice(i, _channels[channel]._program);
+ playMelodicNote(i, channel, note, velocity);
+ _lastVoice = i;
+ return;
+ }
+
+ // Then just try finding a melodic voice with the same program,
+ // and steal it.
+ for (uint i = (_lastVoice + 1) % kNumMelodic; i != _lastVoice; i = (i + 1) % kNumMelodic) {
+ if (_voices[i]._program != _channels[channel]._program)
+ continue;
+ muteMelodicVoice(i);
+ playMelodicNote(i, channel, note, velocity);
+ _lastVoice = i;
+ return;
+ }
+
+ // Finally, just take control of the channel used least recently.
+ uint voiceId = 0;
+ uint32 bestTimestamp = 0xffffffff;
+ for (uint i = 0; i < kNumMelodic; ++i)
+ if (bestTimestamp > _voices[i]._timestamp) {
+ voiceId = i;
+ bestTimestamp = _voices[i]._timestamp;
+ }
+
+ //debug(1, "ran out of voices for channel %d, note %d, program %d: reused voice %d", channel, note, _channels[channel]._program, voiceId);
+ programMelodicVoice(voiceId, _channels[channel]._program);
+ playMelodicNote(voiceId, channel, note, velocity);
+ _lastVoice = voiceId;
+}
+
+// TODO: this doesn't match original
+void AdLibDriver::allNotesOff() {
+ for (uint i = 0; i < kNumMelodic; ++i) {
+ muteMelodicVoice(i);
+ _voices[i]._used = false;
+ }
+
+ _percussionMask = kDefaultPercussionMask;
+ _opl->writeReg(0xBD, kDefaultPercussionMask);
+}
+
+void AdLibDriver::setModulationWheel(uint8 channel, uint8 value) {
+ if (value >= 64)
+ _percussionMask |= 0x80;
+ else
+ _percussionMask &= 0x7f;
+
+ _opl->writeReg(0xBD, _percussionMask);
+}
+
+void AdLibDriver::setFootController(uint8 channel, uint8 value) {
+ _channels[channel]._pedal = (value >= 64);
+}
+
+void AdLibDriver::setVolume(uint8 channel, uint8 value) {
+ _channels[channel]._volume = value;
+}
+
+void AdLibDriver::setPitchBend(uint8 channel, int16 value) {
+ for (uint i = 0; i < kNumMelodic; ++i) {
+ if (_voices[i]._channel != channel || !_voices[i]._used)
+ continue;
+
+ // index into frequency table
+ uint f = 12 + (_voices[i]._key % 12);
+
+ int16 bendAmount = value;
+ if (bendAmount > 0) {
+ // bend up two semitones
+ bendAmount *= (melodicFrequencies[f + 2] - melodicFrequencies[f]);
+ } else {
+ // bend down two semitones
+ bendAmount *= (melodicFrequencies[f] - melodicFrequencies[f - 2]);
+ }
+ bendAmount /= 0x2000;
+ bendAmount += melodicFrequencies[f]; // add the base frequency
+ playNote(i, _voices[i]._octave, bendAmount);
+ _voices[i]._timestamp = g_system->getMillis();
+ }
+}
+
+void AdLibDriver::playNote(uint8 voice, uint8 octave, uint16 frequency) {
+ /* Percussions are always fed keyOn = 0 even to set the note, as they are activated using the
+ BD register instead. I wonder if they can just be fed the same value as melodic voice and
+ be done with it. */
+ uint8 keyOn = (voice < kNumMelodic) ? 0x20 : 0;
+
+ // key on, octave, high 2 bits of frequency
+ _opl->writeReg(0xB0 + voice, keyOn | ((octave & 7) << 2) | ((frequency >> 8) & 3));
+ // low 8 bits of frequency
+ _opl->writeReg(0xA0 + voice, frequency & 0xff);
+}
+
+void AdLibDriver::programOperatorSimple(uint8 offset, const OPLOperator &op) {
+ _opl->writeReg(0x40 + offset, op.levels & LEVEL_MASK);
+ _opl->writeReg(0x60 + offset, op.attackDecay);
+ _opl->writeReg(0x80 + offset, op.sustainRelease);
+}
+
+void AdLibDriver::programOperator(uint8 offset, const OPLOperator &op) {
+ _opl->writeReg(0x20 + offset, op.characteristic);
+ _opl->writeReg(0x60 + offset, op.attackDecay);
+ _opl->writeReg(0x80 + offset, op.sustainRelease);
+ _opl->writeReg(0xE0 + offset, op.waveform);
+ _opl->writeReg(0x40 + offset, op.levels);
+}
+
+const uint16 adlibLogVolume[] = {
+ 0, 37, 58, 73, 85, 95, 103, 110, 116, 121, 127, 131, 135, 139, 143, 146,
+ 149, 153, 155, 158, 161, 163, 165, 168, 170, 172, 174, 176, 178, 179, 181, 183,
+ 184, 186, 188, 189, 191, 192, 193, 195, 196, 197, 198, 200, 201, 202, 203, 204,
+ 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 219,
+ 220, 221, 222, 223, 223, 224, 225, 226, 226, 227, 228, 228, 229, 230, 231, 231,
+ 232, 233, 233, 234, 234, 235, 236, 236, 237, 237, 238, 239, 239, 240, 240, 241,
+ 241, 242, 242, 243, 244, 244, 245, 245, 246, 246, 247, 247, 248, 248, 248, 249,
+ 249, 250, 250, 251, 251, 252, 252, 253, 253, 253, 254, 254, 255, 255, 256, 256,
+ 256
+};
+
+void AdLibDriver::setOperatorLevel(uint8 offset, const OPLOperator &op, uint8 velocity, uint8 channel, bool forceVolume) {
+ uint8 programLevel = LEVEL_MASK;
+ if (!forceVolume)
+ programLevel -= (op.levels & LEVEL_MASK);
+
+ uint32 noteLevel = adlibLogVolume[velocity];
+ uint32 channelLevel = adlibLogVolume[_channels[channel]._volume];
+ // programLevel comes from the static data and is probably already in the correct logarithmic scale
+ uint32 finalLevel = LEVEL_MASK - ((noteLevel * channelLevel * programLevel) >> 16);
+
+ // high 2 bits are scaling level, the rest is (inversed) volume
+ _opl->writeReg(0x40 + offset, (op.levels & 0xc0) | (finalLevel & 0x3f));
+}
+
+const uint8 operatorOffsetsForPercussion[] = {
+ 0x11, // hi-hat
+ 0x15, // cymbal
+ 0x12, // tom tom
+ 0x14 // snare drum
+};
+
+void AdLibDriver::setupPercussion(const PercussionNote &note) {
+ if (note.percussion < 4) {
+ // simple percussion (1 operator)
+
+ // turn off relevant percussion
+ _percussionMask &= ~(1 << note.percussion);
+ _opl->writeReg(0xBD, _percussionMask);
+
+ programOperatorSimple(operatorOffsetsForPercussion[note.percussion], note.op[0]);
+ return;
+ }
+
+ // bass drum (2 operators)
+
+ // turn off bass drum
+ _percussionMask &= ~(0x10);
+ _opl->writeReg(0xBD, _percussionMask);
+
+ programOperator(0x10, note.op[0]);
+ programOperator(0x13, note.op[1]);
+
+ _opl->writeReg(0xC0 + 6, note.feedbackAlgo);
+}
+
+void AdLibDriver::playPercussion(uint8 channel, const PercussionNote &note, uint8 velocity) {
+ if (note.percussion < 4) {
+ // simple percussion (1 operator)
+
+ // turn off relevant percussion
+ _percussionMask &= ~(1 << note.percussion);
+ _opl->writeReg(0xBD, _percussionMask);
+
+ setOperatorLevel(operatorOffsetsForPercussion[note.percussion], note.op[0], velocity, channel, true);
+
+ if (note.percussion == 2) {
+ // tom tom
+ playNote(8, note.octave, note.frequency);
+ } else if (note.percussion == 3) {
+ // snare drum
+ playNote(7, note.octave, note.frequency);
+ }
+
+ // turn on relevant percussion
+ _percussionMask |= (1 << note.percussion);
+ _opl->writeReg(0xBD, _percussionMask);
+ return;
+ }
+
+ // turn off bass drum
+ _percussionMask &= ~(0x10);
+ _opl->writeReg(0xBD, _percussionMask);
+
+ if (note.feedbackAlgo & 1) {
+ // operators 1 and 2 in additive synthesis
+ setOperatorLevel(0x10, note.op[0], velocity, channel, true);
+ setOperatorLevel(0x13, note.op[1], velocity, channel, true);
+ } else {
+ // operator 2 is modulating operator 1
+ setOperatorLevel(0x13, note.op[1], velocity, channel, true);
+ }
+
+ playNote(6, note.octave, note.frequency);
+
+ // turn on bass drum
+ _percussionMask |= 0x10;
+ _opl->writeReg(0xBD, _percussionMask);
+}
+
+const uint8 offset1ForMelodic[kNumVoices] = { 0x0, 0x1, 0x2, 0x8, 0x9, 0xa, 0x10, 0x11, 0x12 };
+const uint8 offset2ForMelodic[kNumVoices] = { 0x3, 0x4, 0x5, 0xb, 0xc, 0xd, 0x13, 0x14, 0x15 };
+
+void AdLibDriver::programMelodicVoice(uint8 voice, uint8 program) {
+ assert(program < 128);
+ assert(voice < kNumMelodic);
+
+ const MelodicProgram &info = melodicPrograms[program];
+ uint8 offset1 = offset1ForMelodic[voice];
+ uint8 offset2 = offset2ForMelodic[voice];
+
+ // Start at lowest volume.
+ _opl->writeReg(0x40 + offset1, LEVEL_MASK);
+ _opl->writeReg(0x40 + offset2, LEVEL_MASK);
+
+ muteMelodicVoice(voice);
+
+ programOperator(offset1, info.op[0]);
+ programOperator(offset2, info.op[1]);
+
+ _opl->writeReg(0xC0 + voice, info.feedbackAlgo);
+}
+
+void AdLibDriver::playMelodicNote(uint8 voice, uint8 channel, uint8 note, uint8 velocity) {
+ assert(voice < kNumMelodic);
+
+ uint8 octave = note / 12;
+ uint8 f = 12 + (note % 12);
+
+ if (octave > 7)
+ octave = 7;
+
+ const MelodicProgram &info = melodicPrograms[_channels[channel]._program];
+ uint8 offset1 = offset1ForMelodic[voice];
+ uint8 offset2 = offset2ForMelodic[voice];
+
+ if (info.feedbackAlgo & 1) {
+ setOperatorLevel(offset1, info.op[0], velocity, channel, false);
+ setOperatorLevel(offset2, info.op[1], velocity, channel, false);
+ } else {
+ setOperatorLevel(offset2, info.op[1], velocity, channel, true);
+ }
+
+ playNote(voice, octave, melodicFrequencies[f]);
+
+ _voices[voice]._program = _channels[channel]._program;
+ _voices[voice]._key = note;
+ _voices[voice]._channel = channel;
+ _voices[voice]._timestamp = g_system->getMillis();
+ _voices[voice]._frequency = melodicFrequencies[f];
+ _voices[voice]._octave = octave;
+ _voices[voice]._used = true;
+}
+
+void AdLibDriver::muteMelodicVoice(uint8 voice) {
+ _opl->writeReg(0xB0 + voice, 0 | ((_voices[voice]._octave & 7) << 2) | ((_voices[voice]._frequency >> 8) & 3));
+}
+
+MidiChannel *AdLibDriver::allocateChannel() {
+ for (uint i = 0; i < 16; ++i) {
+ if (i == 9)
+ continue;
+
+ if (_channels[i].allocate())
+ return &_channels[i];
+ }
+
+ return NULL;
+}
+
+void AdLibDriver::generateSamples(int16 *buf, int len) {
+ memset(buf, 0, sizeof(int16) * len);
+ _opl->readBuffer(buf, len);
+}
+
+void AdLibDriver::initVoices() {
+ _percussionMask = kDefaultPercussionMask;
+ _opl->writeReg(0xBD, _percussionMask);
+
+ for (uint i = 0; i < 16; ++i)
+ _channels[i].reset();
+
+ for (uint i = 0; i < kNumMelodic; ++i) {
+ _voices[i]._key = 0xff;
+ _voices[i]._program = 0xff;
+ _voices[i]._channel = 0xff;
+ _voices[i]._timestamp = 0;
+ _voices[i]._frequency = 0;
+ _voices[i]._octave = 0;
+ _voices[i]._used = false;
+ }
+
+ for (uint i = 0; i < kNumPercussion; ++i)
+ _notesPerPercussion[i] = 0xff;
+
+ _lastVoice = 0;
+}
+
+} // namespace Parallaction
diff --git a/engines/parallaction/module.mk b/engines/parallaction/module.mk
index d65653cd92..36572a51df 100644
--- a/engines/parallaction/module.mk
+++ b/engines/parallaction/module.mk
@@ -1,6 +1,7 @@
MODULE := engines/parallaction
MODULE_OBJS := \
+ adlib.o \
balloons.o \
callables_br.o \
callables_ns.o \
diff --git a/engines/parallaction/sound.h b/engines/parallaction/sound.h
index e875e69334..e12e50e278 100644
--- a/engines/parallaction/sound.h
+++ b/engines/parallaction/sound.h
@@ -33,6 +33,7 @@
#define PATH_LEN 200
class MidiParser;
+class MidiDriver;
namespace Parallaction {
@@ -41,6 +42,7 @@ class MidiPlayer;
class Parallaction_br;
class MidiPlayer_MSC;
+MidiDriver *createAdLibDriver();
class SoundManImpl {
public:
diff --git a/engines/parallaction/sound_br.cpp b/engines/parallaction/sound_br.cpp
index fbafd36c9a..ad510eb1f1 100644
--- a/engines/parallaction/sound_br.cpp
+++ b/engines/parallaction/sound_br.cpp
@@ -146,6 +146,7 @@ void MidiParser_MSC::parseNextEvent(EventInfo &info) {
return;
}
+ info.length = 0;
info.delta = readVLQ(_position._playPos);
info.event = read1(_position._playPos);
@@ -224,7 +225,12 @@ MidiPlayer_MSC::MidiPlayer_MSC()
: _paused(false) {
MidiDriver::DeviceHandle dev = MidiDriver::detectDevice(MDT_MIDI | MDT_ADLIB | MDT_PREFER_GM);
- _driver = MidiDriver::createMidi(dev);
+ const MusicType musicType = MidiDriver::getMusicType(dev);
+ if (musicType == MT_ADLIB) {
+ _driver = createAdLibDriver();
+ } else {
+ _driver = MidiDriver::createMidi(dev);
+ }
assert(_driver);
int ret = _driver->open();