1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*
* Load_digi.cpp
* -------------
* Purpose: Digi Booster module loader
* Notes : Basically these are like ProTracker MODs with a few extra features such as more channels, longer samples and a few more effects.
* Authors: OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "Loaders.h"
OPENMPT_NAMESPACE_BEGIN
// DIGI File Header
struct DIGIFileHeader
{
char signature[20];
char versionStr[4]; // Supposed to be "V1.6" or similar, but other values like "TAP!" have been found as well.
uint8be versionInt; // e.g. 0x16 = 1.6
uint8be numChannels;
uint8be packEnable;
char unknown[19];
uint8be lastPatIndex;
uint8be lastOrdIndex;
uint8be orders[128];
uint32be smpLength[31];
uint32be smpLoopStart[31];
uint32be smpLoopLength[31];
uint8be smpVolume[31];
uint8be smpFinetune[31];
};
MPT_BINARY_STRUCT(DIGIFileHeader, 610)
static void ReadDIGIPatternEntry(FileReader &file, ModCommand &m)
{
CSoundFile::ReadMODPatternEntry(file, m);
CSoundFile::ConvertModCommand(m);
if(m.command == CMD_MODCMDEX)
{
switch(m.param & 0xF0)
{
case 0x30:
// E3x: Play sample backwards (E30 stops sample when it reaches the beginning, any other value plays it from the beginning including regular loop)
// The play direction is also reset if a new note is played on the other channel linked to this channel.
// The behaviour is rather broken when there is no note next to the ommand.
m.command = CMD_DIGIREVERSESAMPLE;
m.param &= 0x0F;
break;
case 0x40:
// E40: Stop playing sample
if(m.param == 0x40)
{
m.note = NOTE_NOTECUT;
m.command = CMD_NONE;
}
break;
case 0x80:
// E8x: High sample offset
m.command = CMD_S3MCMDEX;
m.param = 0xA0 | (m.param & 0x0F);
}
} else if(m.command == CMD_PANNING8)
{
// 8xx "Robot" effect (not supported)
m.command = CMD_NONE;
}
}
static bool ValidateHeader(const DIGIFileHeader &fileHeader)
{
if(std::memcmp(fileHeader.signature, "DIGI Booster module\0", 20)
|| !fileHeader.numChannels
|| fileHeader.numChannels > 8
|| fileHeader.lastOrdIndex > 127)
{
return false;
}
return true;
}
CSoundFile::ProbeResult CSoundFile::ProbeFileHeaderDIGI(MemoryFileReader file, const uint64 *pfilesize)
{
DIGIFileHeader fileHeader;
if(!file.ReadStruct(fileHeader))
{
return ProbeWantMoreData;
}
if(!ValidateHeader(fileHeader))
{
return ProbeFailure;
}
MPT_UNREFERENCED_PARAMETER(pfilesize);
return ProbeSuccess;
}
bool CSoundFile::ReadDIGI(FileReader &file, ModLoadingFlags loadFlags)
{
file.Rewind();
DIGIFileHeader fileHeader;
if(!file.ReadStruct(fileHeader))
{
return false;
}
if(!ValidateHeader(fileHeader))
{
return false;
}
if(loadFlags == onlyVerifyHeader)
{
return true;
}
// Globals
InitializeGlobals(MOD_TYPE_DIGI);
InitializeChannels();
m_nChannels = fileHeader.numChannels;
m_nSamples = 31;
m_nSamplePreAmp = 256 / m_nChannels;
m_modFormat.formatName = U_("DigiBooster");
m_modFormat.type = U_("digi");
m_modFormat.madeWithTracker = MPT_UFORMAT("Digi Booster {}.{}")(fileHeader.versionInt >> 4, fileHeader.versionInt & 0x0F);
m_modFormat.charset = mpt::Charset::Amiga_no_C1;
ReadOrderFromArray(Order(), fileHeader.orders, fileHeader.lastOrdIndex + 1);
// Read sample headers
for(SAMPLEINDEX smp = 0; smp < 31; smp++)
{
ModSample &sample = Samples[smp + 1];
sample.Initialize(MOD_TYPE_MOD);
sample.nLength = fileHeader.smpLength[smp];
sample.nLoopStart = fileHeader.smpLoopStart[smp];
sample.nLoopEnd = sample.nLoopStart + fileHeader.smpLoopLength[smp];
if(fileHeader.smpLoopLength[smp])
{
sample.uFlags.set(CHN_LOOP);
}
sample.SanitizeLoops();
sample.nVolume = std::min(fileHeader.smpVolume[smp].get(), uint8(64)) * 4;
sample.nFineTune = MOD2XMFineTune(fileHeader.smpFinetune[smp]);
}
// Read song + sample names
file.ReadString<mpt::String::maybeNullTerminated>(m_songName, 32);
for(SAMPLEINDEX smp = 1; smp <= 31; smp++)
{
file.ReadString<mpt::String::maybeNullTerminated>(m_szNames[smp], 30);
}
if(loadFlags & loadPatternData)
Patterns.ResizeArray(fileHeader.lastPatIndex + 1);
for(PATTERNINDEX pat = 0; pat <= fileHeader.lastPatIndex; pat++)
{
FileReader patternChunk;
if(fileHeader.packEnable)
{
patternChunk = file.ReadChunk(file.ReadUint16BE());
} else
{
patternChunk = file.ReadChunk(4 * 64 * GetNumChannels());
}
if(!(loadFlags & loadPatternData) || !Patterns.Insert(pat, 64))
{
continue;
}
if(fileHeader.packEnable)
{
uint8 eventMask[64];
patternChunk.ReadArray(eventMask);
// Compressed patterns are stored in row-major order...
for(ROWINDEX row = 0; row < 64; row++)
{
PatternRow patRow = Patterns[pat].GetRow(row);
uint8 bit = 0x80;
for(CHANNELINDEX chn = 0; chn < GetNumChannels(); chn++, bit >>= 1)
{
if(eventMask[row] & bit)
{
ModCommand &m = patRow[chn];
ReadDIGIPatternEntry(patternChunk, m);
}
}
}
} else
{
// ...but uncompressed patterns are stored in column-major order. WTF!
for(CHANNELINDEX chn = 0; chn < GetNumChannels(); chn++)
{
for(ROWINDEX row = 0; row < 64; row++)
{
ReadDIGIPatternEntry(patternChunk, *Patterns[pat].GetpModCommand(row, chn));
}
}
}
}
if(loadFlags & loadSampleData)
{
// Reading Samples
const SampleIO sampleIO(
SampleIO::_8bit,
SampleIO::mono,
SampleIO::bigEndian,
SampleIO::signedPCM);
for(SAMPLEINDEX smp = 1; smp <= 31; smp++)
{
sampleIO.ReadSample(Samples[smp], file);
}
}
return true;
}
OPENMPT_NAMESPACE_END
|
