mirror of
https://github.com/holub/mame
synced 2025-04-25 17:56:43 +03:00
Update k573dio/k573fpga to use a proper algorithm for decrypting ddrsbm audio + volume fix (#5071)
* Fix volume bug * Implement decryption algorithm for DDR Solo Bass Mix which does not rely on premade tables/keys. * This shift is useless * Make use of bitswap
This commit is contained in:
Windy Fairy
R. Belmont
parent
5f7d463268
commit
c05732d212
@ -257,12 +257,12 @@ int gain_to_db(double val) {
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}
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float gain_to_percentage(int val) {
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double db = gain_to_db(val);
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if (db == 0) {
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if (val == 0) {
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return 0; // Special case for muting it seems
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}
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double db = gain_to_db(val);
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return powf(10.0, (db + 6) / 20.0);
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}
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@ -2350,7 +2350,7 @@ void ksys573_state::ddrsbm(machine_config &config)
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{
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k573d(config);
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subdevice<k573dio_device>("k573dio")->output_callback().set(FUNC(ksys573_state::ddrsolo_output_callback));
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subdevice<k573dio_device>("k573dio")->set_fake_fpga(true);
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subdevice<k573dio_device>("k573dio")->set_ddrsbm_fpga(true);
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cassyi(config);
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}
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@ -112,7 +112,7 @@ k573dio_device::k573dio_device(const machine_config &mconfig, const char *tag, d
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k573fpga(*this, "k573fpga"),
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digital_id(*this, "digital_id"),
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output_cb(*this),
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is_fake_fpga(false),
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is_ddrsbm_fpga(false),
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buffer_speed(0x400)
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{
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}
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@ -125,7 +125,7 @@ void k573dio_device::device_start()
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save_pointer(NAME(ram), 32 * 1024 * 1024 );
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k573fpga->set_ram(ram.get());
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k573fpga->set_fake_fpga(is_fake_fpga);
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k573fpga->set_ddrsbm_fpga(is_ddrsbm_fpga);
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k573fpga->set_buffer_speed(buffer_speed);
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k573fpga->set_mp3_dynamic_base(mp3_dynamic_base);
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@ -19,7 +19,7 @@ public:
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required_device<ds2401_device> digital_id;
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void amap(address_map &map);
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void set_fake_fpga(bool flag) { is_fake_fpga = flag; }
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void set_ddrsbm_fpga(bool flag) { is_ddrsbm_fpga = flag; }
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void set_buffer_speed(uint32_t speed) { buffer_speed = speed; }
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void set_mp3_dynamic_base(uint32_t base) { mp3_dynamic_base = base; }
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@ -83,7 +83,7 @@ private:
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void output(int offset, uint16_t data);
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bool is_fake_fpga;
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bool is_ddrsbm_fpga;
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uint32_t buffer_speed, mp3_dynamic_base;
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};
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@ -1,120 +0,0 @@
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// license:BSD-3-Clause
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// copyright-holders:windyfairy
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#ifndef MAME_MACHINE_K573ENC_H
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#define MAME_MACHINE_K573ENC_H
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#pragma once
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#include <map>
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std::unordered_map<uint16_t, uint32_t> k573enc_lookup({
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{ 0x031a, 0 },
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{ 0x038e, 1 },
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{ 0x0aa7, 2 },
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{ 0x0c51, 3 },
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{ 0x0e34, 4 },
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{ 0x14d9, 5 },
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{ 0x154d, 6 },
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{ 0x18a0, 7 },
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{ 0x18da, 8 },
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{ 0x1c67, 9 },
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{ 0x20dc, 10 },
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{ 0x21d6, 11 },
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{ 0x2698, 12 },
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{ 0x28b6, 13 },
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{ 0x2a5f, 14 },
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{ 0x2c7c, 15 },
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{ 0x3009, 16 },
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{ 0x3395, 17 },
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{ 0x3505, 18 },
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{ 0x3722, 19 },
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{ 0x38cb, 20 },
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{ 0x3aaf, 21 },
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{ 0x3e3b, 22 },
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{ 0x41c8, 23 },
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{ 0x4371, 24 },
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{ 0x451b, 25 },
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{ 0x4555, 26 },
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{ 0x46c4, 27 },
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{ 0x48e1, 28 },
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{ 0x4c6e, 29 },
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{ 0x4fc0, 30 },
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{ 0x4ffa, 31 },
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{ 0x5387, 32 },
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{ 0x5530, 33 },
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{ 0x56b4, 34 },
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{ 0x5714, 35 },
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{ 0x5c10, 36 },
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{ 0x5c83, 37 },
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{ 0x5dcd, 38 },
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{ 0x5fd6, 39 },
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{ 0x6010, 40 },
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{ 0x617f, 41 },
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{ 0x6546, 42 },
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{ 0x6729, 43 },
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{ 0x685f, 44 },
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{ 0x6dcf, 45 },
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{ 0x6e43, 46 },
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{ 0x6fec, 47 },
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{ 0x7195, 48 },
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{ 0x755c, 49 },
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{ 0x78e8, 50 },
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{ 0x7c3b, 51 }
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});
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uint8_t k573enc_keys[52][16] = {
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{ 0x14, 0x26, 0x28, 0x4c, 0x50, 0x98, 0xa0, 0x31, 0x41, 0x62, 0x82, 0xc4, 0x05, 0x89, 0x0a, 0x13 },
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{ 0x12, 0x36, 0x24, 0x6c, 0x48, 0xd8, 0x90, 0xb1, 0x21, 0x63, 0x42, 0xc6, 0x84, 0x8d, 0x09, 0x1b },
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{ 0x03, 0x7a, 0x06, 0xf4, 0x0c, 0xe9, 0x18, 0xd3, 0x30, 0xa7, 0x60, 0x4f, 0xc0, 0x9e, 0x81, 0x3d },
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{ 0x2d, 0x40, 0x5a, 0x80, 0xb4, 0x01, 0x69, 0x02, 0xd2, 0x04, 0xa5, 0x08, 0x4b, 0x10, 0x96, 0x20 },
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{ 0x26, 0x68, 0x4c, 0xd0, 0x98, 0xa1, 0x31, 0x43, 0x62, 0x86, 0xc4, 0x0d, 0x89, 0x1a, 0x13, 0x34 },
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{ 0x6d, 0x14, 0xda, 0x28, 0xb5, 0x50, 0x6b, 0xa0, 0xd6, 0x41, 0xad, 0x82, 0x5b, 0x05, 0xb6, 0x0a },
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{ 0x7b, 0x04, 0xf6, 0x08, 0xed, 0x10, 0xdb, 0x20, 0xb7, 0x40, 0x6f, 0x80, 0xde, 0x01, 0xbd, 0x02 },
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{ 0x40, 0x58, 0x80, 0xb0, 0x01, 0x61, 0x02, 0xc2, 0x04, 0x85, 0x08, 0x0b, 0x10, 0x16, 0x20, 0x2c },
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{ 0x4c, 0x56, 0x98, 0xac, 0x31, 0x59, 0x62, 0xb2, 0xc4, 0x65, 0x89, 0xca, 0x13, 0x95, 0x26, 0x2b },
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{ 0x6b, 0x4a, 0xd6, 0x94, 0xad, 0x29, 0x5b, 0x52, 0xb6, 0xa4, 0x6d, 0x49, 0xda, 0x92, 0xb5, 0x25 },
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{ 0x0e, 0x94, 0x1c, 0x29, 0x38, 0x52, 0x70, 0xa4, 0xe0, 0x49, 0xc1, 0x92, 0x83, 0x25, 0x07, 0x4a },
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{ 0x1e, 0x92, 0x3c, 0x25, 0x78, 0x4a, 0xf0, 0x94, 0xe1, 0x29, 0xc3, 0x52, 0x87, 0xa4, 0x0f, 0x49 },
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{ 0x24, 0xb4, 0x48, 0x69, 0x90, 0xd2, 0x21, 0xa5, 0x42, 0x4b, 0x84, 0x96, 0x09, 0x2d, 0x12, 0x5a },
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{ 0x06, 0xda, 0x0c, 0xb5, 0x18, 0x6b, 0x30, 0xd6, 0x60, 0xad, 0xc0, 0x5b, 0x81, 0xb6, 0x03, 0x6d },
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{ 0x0f, 0xe6, 0x1e, 0xcd, 0x3c, 0x9b, 0x78, 0x37, 0xf0, 0x6e, 0xe1, 0xdc, 0xc3, 0xb9, 0x87, 0x73 },
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{ 0x2e, 0xcc, 0x5c, 0x99, 0xb8, 0x33, 0x71, 0x66, 0xe2, 0xcc, 0xc5, 0x99, 0x8b, 0x33, 0x17, 0x66 },
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{ 0x41, 0x84, 0x82, 0x09, 0x05, 0x12, 0x0a, 0x24, 0x14, 0x48, 0x28, 0x90, 0x50, 0x21, 0xa0, 0x42 },
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{ 0x57, 0xb0, 0xae, 0x61, 0x5d, 0xc2, 0xba, 0x85, 0x75, 0x0b, 0xea, 0x16, 0xd5, 0x2c, 0xab, 0x58 },
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{ 0x73, 0x80, 0xe6, 0x01, 0xcd, 0x02, 0x9b, 0x04, 0x37, 0x08, 0x6e, 0x10, 0xdc, 0x20, 0xb9, 0x40 },
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{ 0x70, 0xaa, 0xe0, 0x55, 0xc1, 0xaa, 0x83, 0x55, 0x07, 0xaa, 0x0e, 0x55, 0x1c, 0xaa, 0x38, 0x55 },
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{ 0x49, 0xd6, 0x92, 0xad, 0x25, 0x5b, 0x4a, 0xb6, 0x94, 0x6d, 0x29, 0xda, 0x52, 0xb5, 0xa4, 0x6b },
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{ 0x43, 0xfe, 0x86, 0xfd, 0x0d, 0xfb, 0x1a, 0xf7, 0x34, 0xef, 0x68, 0xdf, 0xd0, 0xbf, 0xa1, 0x7f },
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{ 0x65, 0xee, 0xca, 0xdd, 0x95, 0xbb, 0x2b, 0x77, 0x56, 0xee, 0xac, 0xdd, 0x59, 0xbb, 0xb2, 0x77 },
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{ 0x98, 0x14, 0x31, 0x28, 0x62, 0x50, 0xc4, 0xa0, 0x89, 0x41, 0x13, 0x82, 0x26, 0x05, 0x4c, 0x0a },
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{ 0x9d, 0x28, 0x3b, 0x50, 0x76, 0xa0, 0xec, 0x41, 0xd9, 0x82, 0xb3, 0x05, 0x67, 0x0a, 0xce, 0x14 },
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{ 0xb5, 0x06, 0x6b, 0x0c, 0xd6, 0x18, 0xad, 0x30, 0x5b, 0x60, 0xb6, 0xc0, 0x6d, 0x81, 0xda, 0x03 },
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{ 0xbf, 0x00, 0x7f, 0x00, 0xfe, 0x00, 0xfd, 0x00, 0xfb, 0x00, 0xf7, 0x00, 0xef, 0x00, 0xdf, 0x00 },
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{ 0xaa, 0x30, 0x55, 0x60, 0xaa, 0xc0, 0x55, 0x81, 0xaa, 0x03, 0x55, 0x06, 0xaa, 0x0c, 0x55, 0x18 },
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{ 0x89, 0x58, 0x13, 0xb0, 0x26, 0x61, 0x4c, 0xc2, 0x98, 0x85, 0x31, 0x0b, 0x62, 0x16, 0xc4, 0x2c },
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{ 0xaa, 0x4e, 0x55, 0x9c, 0xaa, 0x39, 0x55, 0x72, 0xaa, 0xe4, 0x55, 0xc9, 0xaa, 0x93, 0x55, 0x27 },
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{ 0xb8, 0x70, 0x71, 0xe0, 0xe2, 0xc1, 0xc5, 0x83, 0x8b, 0x07, 0x17, 0x0e, 0x2e, 0x1c, 0x5c, 0x38 },
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{ 0xbc, 0x7e, 0x79, 0xfc, 0xf2, 0xf9, 0xe5, 0xf3, 0xcb, 0xe7, 0x97, 0xcf, 0x2f, 0x9f, 0x5e, 0x3f },
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{ 0xd3, 0x32, 0xa7, 0x64, 0x4f, 0xc8, 0x9e, 0x91, 0x3d, 0x23, 0x7a, 0x46, 0xf4, 0x8c, 0xe9, 0x19 },
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{ 0xf4, 0x08, 0xe9, 0x10, 0xd3, 0x20, 0xa7, 0x40, 0x4f, 0x80, 0x9e, 0x01, 0x3d, 0x02, 0x7a, 0x04 },
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{ 0xe6, 0x38, 0xcd, 0x70, 0x9b, 0xe0, 0x37, 0xc1, 0x6e, 0x83, 0xdc, 0x07, 0xb9, 0x0e, 0x73, 0x1c },
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{ 0xf6, 0x20, 0xed, 0x40, 0xdb, 0x80, 0xb7, 0x01, 0x6f, 0x02, 0xde, 0x04, 0xbd, 0x08, 0x7b, 0x10 },
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{ 0xe4, 0x40, 0xc9, 0x80, 0x93, 0x01, 0x27, 0x02, 0x4e, 0x04, 0x9c, 0x08, 0x39, 0x10, 0x72, 0x20 },
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{ 0xe1, 0x52, 0xc3, 0xa4, 0x87, 0x49, 0x0f, 0x92, 0x1e, 0x25, 0x3c, 0x4a, 0x78, 0x94, 0xf0, 0x29 },
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{ 0xfb, 0x54, 0xf7, 0xa8, 0xef, 0x51, 0xdf, 0xa2, 0xbf, 0x45, 0x7f, 0x8a, 0xfe, 0x15, 0xfd, 0x2a },
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{ 0xfe, 0x72, 0xfd, 0xe4, 0xfb, 0xc9, 0xf7, 0x93, 0xef, 0x27, 0xdf, 0x4e, 0xbf, 0x9c, 0x7f, 0x39 },
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{ 0x84, 0x80, 0x09, 0x01, 0x12, 0x02, 0x24, 0x04, 0x48, 0x08, 0x90, 0x10, 0x21, 0x20, 0x42, 0x40 },
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{ 0x9f, 0x8e, 0x3f, 0x1d, 0x7e, 0x3a, 0xfc, 0x74, 0xf9, 0xe8, 0xf3, 0xd1, 0xe7, 0xa3, 0xcf, 0x47 },
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{ 0xba, 0x82, 0x75, 0x05, 0xea, 0x0a, 0xd5, 0x14, 0xab, 0x28, 0x57, 0x50, 0xae, 0xa0, 0x5d, 0x41 },
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{ 0xb1, 0xac, 0x63, 0x59, 0xc6, 0xb2, 0x8d, 0x65, 0x1b, 0xca, 0x36, 0x95, 0x6c, 0x2b, 0xd8, 0x56 },
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{ 0x8f, 0xc6, 0x1f, 0x8d, 0x3e, 0x1b, 0x7c, 0x36, 0xf8, 0x6c, 0xf1, 0xd8, 0xe3, 0xb1, 0xc7, 0x63 },
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{ 0xbb, 0xd6, 0x77, 0xad, 0xee, 0x5b, 0xdd, 0xb6, 0xbb, 0x6d, 0x77, 0xda, 0xee, 0xb5, 0xdd, 0x6b },
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{ 0xa9, 0xe2, 0x53, 0xc5, 0xa6, 0x8b, 0x4d, 0x17, 0x9a, 0x2e, 0x35, 0x5c, 0x6a, 0xb8, 0xd4, 0x71 },
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{ 0xba, 0xfc, 0x75, 0xf9, 0xea, 0xf3, 0xd5, 0xe7, 0xab, 0xcf, 0x57, 0x9f, 0xae, 0x3f, 0x5d, 0x7e },
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{ 0xd7, 0x90, 0xaf, 0x21, 0x5f, 0x42, 0xbe, 0x84, 0x7d, 0x09, 0xfa, 0x12, 0xf5, 0x24, 0xeb, 0x48 },
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{ 0xfe, 0x84, 0xfd, 0x09, 0xfb, 0x12, 0xf7, 0x24, 0xef, 0x48, 0xdf, 0x90, 0xbf, 0x21, 0x7f, 0x42 },
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{ 0xc8, 0xdc, 0x91, 0xb9, 0x23, 0x73, 0x46, 0xe6, 0x8c, 0xcd, 0x19, 0x9b, 0x32, 0x37, 0x64, 0x6e },
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{ 0xe5, 0xce, 0xcb, 0x9d, 0x97, 0x3b, 0x2f, 0x76, 0x5e, 0xec, 0xbc, 0xd9, 0x79, 0xb3, 0xf2, 0x67 }
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};
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#endif // MAME_MACHINE_K573ENC_H
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@ -4,7 +4,6 @@
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#include "speaker.h"
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#include "k573fpga.h"
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#include "k573enc.h"
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// TODO: Check if this is optimal
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#define MINIMUM_BUFFER 1
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@ -22,7 +21,7 @@ k573fpga_device::k573fpga_device(const machine_config &mconfig, const char *tag,
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device_t(mconfig, KONAMI_573_DIGITAL_FPGA, tag, owner, clock),
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mas3507d(*this, "mpeg"),
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m_samples(*this, "samples"),
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use_fake_fpga(false)
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use_ddrsbm_fpga(false)
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{
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}
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@ -178,15 +177,6 @@ void k573fpga_device::set_mpeg_ctrl(uint16_t data)
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}
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}
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int32_t k573fpga_device::find_enc_key()
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{
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if (k573enc_lookup.find(crypto_key1) == k573enc_lookup.end()) {
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return -1;
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}
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return k573enc_lookup[crypto_key1];
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}
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inline uint16_t k573fpga_device::fpga_decrypt_byte_real(uint16_t v)
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{
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uint16_t m = crypto_key1 ^ crypto_key2;
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@ -231,17 +221,24 @@ inline uint16_t k573fpga_device::fpga_decrypt_byte_real(uint16_t v)
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return (v >> 8) | ((v & 0xff) << 8);
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}
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inline uint16_t k573fpga_device::fpga_decrypt_byte_fake(uint16_t data, uint32_t crypto_idx)
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inline uint16_t k573fpga_device::fpga_decrypt_byte_ddrsbm(uint16_t data, uint32_t crypto_idx)
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{
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// Not the real algorithm. Only used for DDR Solo Bass Mix (ddrsbm)
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int32_t crypto_enc_idx = find_enc_key();
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uint8_t key[16] = {0};
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uint16_t key_state = bitswap<16>(
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crypto_key1,
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13, 11, 9, 7,
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5, 3, 1, 15,
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14, 12, 10, 8,
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6, 4, 2, 0
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);
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if (crypto_enc_idx == -1) {
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return data;
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for (int i = 0; i < 8; i++) {
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key[i * 2] = key_state & 0xff;
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key[i * 2 + 1] = (key_state >> 8) & 0xff;
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key_state = (((((key_state >> 8) >> 7) & 1) | (((key_state >> 8) << 1) & 0xff)) << 8) |
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(((key_state & 0xff) >> 7) & 1) | (((key_state & 0xff) << 1) & 0xff);
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}
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uint8_t *key = k573enc_keys[crypto_enc_idx];
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uint16_t output_word = 0;
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for (int cur_bit = 0; cur_bit < 8; cur_bit++) {
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int even_bit_shift = (cur_bit * 2) & 0xff;
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@ -277,7 +274,7 @@ SAMPLES_UPDATE_CB_MEMBER(k573fpga_device::k573fpga_stream_update)
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int new_samples = 0;
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if (!use_fake_fpga && mp3_start_adr != mp3_dynamic_base) {
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if (!use_ddrsbm_fpga && mp3_start_adr != mp3_dynamic_base) {
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// Base addresses are kind of a "hack" and should be dealt with eventually.
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// Files that are loaded at he base address are dynamic, meaning the data constantly changes.
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// Data will not get loaded outside of the base address region past the boot sequence, however.
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@ -295,13 +292,13 @@ SAMPLES_UPDATE_CB_MEMBER(k573fpga_device::k573fpga_stream_update)
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crypto_key3 = orig_crypto_key3;
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for (int32_t cur_idx = mp3_start_adr; cur_idx < mp3_end_adr; cur_idx += 2) {
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if (use_fake_fpga) {
|
||||
ram_swap[cur_idx >> 1] = fpga_decrypt_byte_fake(ram[cur_idx >> 1], (cur_idx - mp3_start_adr) / 2);
|
||||
if (use_ddrsbm_fpga) {
|
||||
ram_swap[cur_idx >> 1] = fpga_decrypt_byte_ddrsbm(ram[cur_idx >> 1], (cur_idx - mp3_start_adr) / 2);
|
||||
} else {
|
||||
ram_swap[cur_idx >> 1] = fpga_decrypt_byte_real(ram[cur_idx >> 1]);
|
||||
}
|
||||
|
||||
if (!use_fake_fpga) {
|
||||
if (!use_ddrsbm_fpga) {
|
||||
crypto_key1 = (crypto_key1 & 0x8000) | ((crypto_key1 << 1) & 0x7FFE) | ((crypto_key1 >> 14) & 1);
|
||||
|
||||
if ((((crypto_key1 >> 15) ^ crypto_key1) & 1) != 0) {
|
||||
@ -355,13 +352,13 @@ SAMPLES_UPDATE_CB_MEMBER(k573fpga_device::k573fpga_stream_update)
|
||||
int32_t cur_idx;
|
||||
|
||||
for (cur_idx = mp3_last_decrypt_adr; cur_idx - mp3_last_decrypt_adr < decrypt_buffer_speed * decrypt_buffer && cur_idx < mp3_end_adr; cur_idx += 2) {
|
||||
if (use_fake_fpga) {
|
||||
ram_swap[cur_idx >> 1] = fpga_decrypt_byte_fake(ram[cur_idx >> 1], (cur_idx - mp3_start_adr) / 2);
|
||||
if (use_ddrsbm_fpga) {
|
||||
ram_swap[cur_idx >> 1] = fpga_decrypt_byte_ddrsbm(ram[cur_idx >> 1], (cur_idx - mp3_start_adr) / 2);
|
||||
} else {
|
||||
ram_swap[cur_idx >> 1] = fpga_decrypt_byte_real(ram[cur_idx >> 1]);
|
||||
}
|
||||
|
||||
if (!use_fake_fpga) {
|
||||
if (!use_ddrsbm_fpga) {
|
||||
crypto_key1 = (crypto_key1 & 0x8000) | ((crypto_key1 << 1) & 0x7FFE) | ((crypto_key1 >> 14) & 1);
|
||||
|
||||
if ((((crypto_key1 >> 15) ^ crypto_key1) & 1) != 0) {
|
||||
|
||||
@ -25,7 +25,7 @@ public:
|
||||
required_device<mas3507d_device> mas3507d;
|
||||
required_device<samples_device> m_samples;
|
||||
|
||||
void set_fake_fpga(bool flag) { use_fake_fpga = flag; }
|
||||
void set_ddrsbm_fpga(bool flag) { use_ddrsbm_fpga = flag; }
|
||||
|
||||
void set_ram(uint16_t *v) { ram = v; }
|
||||
|
||||
@ -63,7 +63,7 @@ private:
|
||||
uint8_t crypto_key3, orig_crypto_key3;
|
||||
|
||||
uint32_t mp3_start_adr, mp3_end_adr, mpeg_ctrl_flag;
|
||||
bool use_fake_fpga;
|
||||
bool use_ddrsbm_fpga;
|
||||
|
||||
uint32_t mp3_last_frame, mp3_last_adr, mp3_next_sync, mp3_last_decrypt_adr;
|
||||
int16_t *channel_l_pcm, *channel_r_pcm;
|
||||
@ -82,7 +82,7 @@ private:
|
||||
int32_t find_enc_key();
|
||||
|
||||
uint16_t fpga_decrypt_byte_real(uint16_t data);
|
||||
uint16_t fpga_decrypt_byte_fake(uint16_t data, uint32_t crypto_idx);
|
||||
uint16_t fpga_decrypt_byte_ddrsbm(uint16_t data, uint32_t crypto_idx);
|
||||
|
||||
SAMPLES_UPDATE_CB_MEMBER(k573fpga_stream_update);
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user