PS2SDK
PS2 Homebrew Libraries
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sepinit.c
1/*
2# _____ ___ ____ ___ ____
3# ____| | ____| | | |____|
4# | ___| |____ ___| ____| | \ PS2DEV Open Source Project.
5#-----------------------------------------------------------------------
6# Copyright ps2dev - http://www.ps2dev.org
7# Licenced under Academic Free License version 2.0
8# Review ps2sdk README & LICENSE files for further details.
9*/
10
11#include "libsnd2_internal.h"
12
13int _SsInitSoundSep(s16 sep_no, int seq_no, u8 vab_id, u8 *addr)
14{
15 int v5;
16 int v6;
17 libsnd2_sequence_struct_t *score_struct;
18 u8 v13;
19 u8 v15;
20 u8 v16;
21 u8 v17;
22 int tempo;
23 char v20;
24 char v21;
25 int v22;
26 u8 v23;
27 u8 v24;
28 u8 v25;
29 s32 delta_value;
30 int v27;
31 unsigned int v28;
32 int tmp1;
33 unsigned int tmp2;
34 int v33;
35
36 v5 = 0;
37 score_struct = &_ss_score[sep_no][seq_no];
38 score_struct->m_l_count = 1;
39 score_struct->m_unk15 = 0;
40 score_struct->m_running_status = 0;
41 score_struct->m_channel_idx = 0;
42 score_struct->m_unk18 = 0;
43 score_struct->m_unk19 = 0;
44 score_struct->m_fn_idx = 0;
45 score_struct->m_unk1B = 0;
46 score_struct->m_unk1C = 0;
47 score_struct->m_unk1D = 0;
48 score_struct->m_unk1E = 0;
49 score_struct->m_unk1F = 0;
50 score_struct->m_play_mode = SSPLAY_PAUSE;
51 score_struct->m_unk21 = 0;
52 score_struct->m_unk52 = 1;
53 score_struct->m_resolution_of_quarter_note = 0;
54 score_struct->m_vab_id = vab_id;
55 score_struct->m_unk56 = 0;
56 score_struct->m_unk84 = 0;
57 score_struct->m_unk88 = 0;
58 score_struct->m_tempo = 0;
59 score_struct->m_delta_value = 0;
60 score_struct->m_channel_mute = 0;
61 score_struct->m_rhythm_n = 0;
62 score_struct->m_rhythm_d = 0;
63 for ( v6 = 0; v6 < 16; v6 += 1 )
64 {
65 score_struct->m_panpot[v6] = 64;
66 score_struct->m_programs[v6] = v6;
67 score_struct->m_vol[v6] = 127;
68 }
69 score_struct->m_seq_ptr = addr;
70 if ( (seq_no & 0xFFFF) != 0 )
71 {
72 score_struct->m_seq_ptr += 2;
73 v5 = 2;
74 }
75 else
76 {
77 int v10;
78
79 v10 = *addr;
80 if ( v10 == 0x53 || v10 == 0x70 )
81 {
82 int v11;
83
84 score_struct->m_seq_ptr += 5;
85 v11 = *(score_struct->m_seq_ptr);
86 score_struct->m_seq_ptr += 1;
87 if ( v11 )
88 {
89 printf("This is not SEP Data.\n");
90 return -1;
91 }
92 score_struct->m_seq_ptr += 2;
93 v5 = 8;
94 }
95 }
96 v13 = *(score_struct->m_seq_ptr);
97 score_struct->m_seq_ptr += 1;
98 v15 = *(score_struct->m_seq_ptr);
99 score_struct->m_seq_ptr += 1;
100 score_struct->m_resolution_of_quarter_note = v15 | (v13 << 8);
101 v16 = *(score_struct->m_seq_ptr);
102 score_struct->m_seq_ptr += 1;
103 v17 = *(score_struct->m_seq_ptr);
104 score_struct->m_seq_ptr += 1;
105 tempo = 60000000 / ((v16 << 16) | (v17 << 8) | *(score_struct->m_seq_ptr));
106 score_struct->m_seq_ptr += 1;
107 score_struct->m_tempo = tempo;
108 score_struct->m_unk94 = score_struct->m_tempo;
109 v20 = *(score_struct->m_seq_ptr);
110 score_struct->m_seq_ptr += 1;
111 score_struct->m_rhythm_n = v20;
112 v21 = *(score_struct->m_seq_ptr);
113 score_struct->m_seq_ptr += 1;
114 score_struct->m_rhythm_d = v21;
115 v22 = *(score_struct->m_seq_ptr);
116 score_struct->m_seq_ptr += 1;
117 v23 = *(score_struct->m_seq_ptr);
118 score_struct->m_seq_ptr += 1;
119 v24 = *(score_struct->m_seq_ptr);
120 score_struct->m_seq_ptr += 1;
121 v25 = *(score_struct->m_seq_ptr);
122 score_struct->m_seq_ptr += 1;
123 v27 = (v22 << 24) + (v23 << 16) + (v24 << 8) + v25;
124 delta_value = _SsReadDeltaValue(sep_no, seq_no);
125 v28 = score_struct->m_resolution_of_quarter_note * score_struct->m_tempo;
126 score_struct->m_unk84 = delta_value;
127 score_struct->m_delta_value = delta_value;
128 score_struct->m_unk10 = 0;
129 score_struct->m_unk08 = score_struct->m_seq_ptr;
130 score_struct->m_unk04 = score_struct->m_seq_ptr;
131 score_struct->m_unk0C = score_struct->m_seq_ptr;
132 tmp1 = VBLANK_MINUS;
133 tmp2 = 60 * tmp1;
134 v33 = v5 + 11;
135 if ( 10 * v28 < (unsigned int)(60 * tmp1) )
136 {
137 unsigned int v34;
138
139 if ( !v28 )
140 __builtin_trap();
141 v34 = 600 * tmp1 / v28;
142 score_struct->m_unk52 = v34;
143 score_struct->m_unk54 = v34;
144 }
145 else
146 {
147 unsigned int v36;
148 unsigned int v37;
149
150 v36 = 10 * score_struct->m_resolution_of_quarter_note * score_struct->m_tempo / tmp2;
151 v37 = 10 * score_struct->m_resolution_of_quarter_note * score_struct->m_tempo % tmp2;
152 score_struct->m_unk52 = -1;
153 score_struct->m_unk54 = v36;
154 if ( (unsigned int)(30 * tmp1) < v37 )
155 {
156 score_struct->m_unk54 = v36 + 1;
157 }
158 }
159 score_struct->m_unk56 = score_struct->m_unk54;
160 return v33 + v27;
161}
libsnd2_sequence_struct_
Definition libsnd2_internal.h:48