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
|
/*
* Load_wav.cpp
* ------------
* Purpose: WAV importer
* Notes : This loader converts each WAV channel into a separate mono sample.
* Authors: Olivier Lapicque
* OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "Loaders.h"
#include "WAVTools.h"
#include "openmpt/soundbase/SampleConvert.hpp"
#include "openmpt/soundbase/SampleDecode.hpp"
#include "SampleCopy.h"
OPENMPT_NAMESPACE_BEGIN
/////////////////////////////////////////////////////////////
// WAV file support
template <typename SampleConversion>
static bool CopyWavChannel(ModSample &sample, const FileReader &file, size_t channelIndex, size_t numChannels, SampleConversion conv = SampleConversion())
{
MPT_ASSERT(sample.GetNumChannels() == 1);
MPT_ASSERT(sample.GetElementarySampleSize() == sizeof(typename SampleConversion::output_t));
const size_t offset = channelIndex * sizeof(typename SampleConversion::input_t) * SampleConversion::input_inc;
if(sample.AllocateSample() == 0 || !file.CanRead(offset))
{
return false;
}
const std::byte *inBuf = file.GetRawData<std::byte>().data();
CopySample<SampleConversion>(reinterpret_cast<typename SampleConversion::output_t*>(sample.samplev()), sample.nLength, 1, inBuf + offset, file.BytesLeft() - offset, numChannels, conv);
return true;
}
CSoundFile::ProbeResult CSoundFile::ProbeFileHeaderWAV(MemoryFileReader file, const uint64 *pfilesize)
{
RIFFHeader fileHeader;
if(!file.ReadStruct(fileHeader))
{
return ProbeWantMoreData;
}
if((fileHeader.magic != RIFFHeader::idRIFF && fileHeader.magic != RIFFHeader::idLIST)
|| (fileHeader.type != RIFFHeader::idWAVE && fileHeader.type != RIFFHeader::idwave))
{
return ProbeFailure;
}
MPT_UNREFERENCED_PARAMETER(pfilesize);
return ProbeSuccess;
}
bool CSoundFile::ReadWAV(FileReader &file, ModLoadingFlags loadFlags)
{
WAVReader wavFile(file);
if(!wavFile.IsValid()
|| wavFile.GetNumChannels() == 0
|| wavFile.GetNumChannels() > MAX_BASECHANNELS
|| wavFile.GetNumChannels() >= MAX_SAMPLES
|| wavFile.GetBitsPerSample() == 0
|| wavFile.GetBitsPerSample() > 64
|| (wavFile.GetBitsPerSample() < 32 && wavFile.GetSampleFormat() == WAVFormatChunk::fmtFloat)
|| (wavFile.GetSampleFormat() != WAVFormatChunk::fmtPCM && wavFile.GetSampleFormat() != WAVFormatChunk::fmtFloat))
{
return false;
} else if(loadFlags == onlyVerifyHeader)
{
return true;
}
InitializeGlobals(MOD_TYPE_MPT);
m_ContainerType = MOD_CONTAINERTYPE_WAV;
m_nChannels = std::max(wavFile.GetNumChannels(), uint16(2));
Patterns.ResizeArray(2);
if(!Patterns.Insert(0, 64) || !Patterns.Insert(1, 64))
{
return false;
}
m_modFormat.formatName = U_("RIFF WAVE");
m_modFormat.type = U_("wav");
m_modFormat.charset = mpt::Charset::Windows1252;
const SmpLength sampleLength = wavFile.GetSampleLength();
// Setting up module length
// Calculate sample length in ticks at tempo 125
const uint32 sampleRate = std::max(uint32(1), wavFile.GetSampleRate());
const uint32 sampleTicks = mpt::saturate_cast<uint32>(((sampleLength * 50) / sampleRate) + 1);
uint32 ticksPerRow = std::max((sampleTicks + 63u) / 63u, uint32(1));
Order().assign(1, 0);
ORDERINDEX numOrders = 1;
while(ticksPerRow >= 32 && numOrders < MAX_ORDERS)
{
numOrders++;
ticksPerRow = (sampleTicks + (64 * numOrders - 1)) / (64 * numOrders);
}
Order().resize(numOrders, 1);
m_nSamples = wavFile.GetNumChannels();
m_nInstruments = 0;
m_nDefaultSpeed = ticksPerRow;
m_nDefaultTempo.Set(125);
m_SongFlags = SONG_LINEARSLIDES;
for(CHANNELINDEX channel = 0; channel < m_nChannels; channel++)
{
ChnSettings[channel].Reset();
ChnSettings[channel].nPan = (channel % 2u) ? 256 : 0;
}
// Setting up pattern
PatternRow pattern = Patterns[0].GetRow(0);
pattern[0].note = pattern[1].note = NOTE_MIDDLEC;
pattern[0].instr = pattern[1].instr = 1;
const FileReader sampleChunk = wavFile.GetSampleData();
// Read every channel into its own sample lot.
for(SAMPLEINDEX channel = 0; channel < GetNumSamples(); channel++)
{
pattern[channel].note = pattern[0].note;
pattern[channel].instr = static_cast<ModCommand::INSTR>(channel + 1);
ModSample &sample = Samples[channel + 1];
sample.Initialize();
sample.uFlags = CHN_PANNING;
sample.nLength = sampleLength;
sample.nC5Speed = wavFile.GetSampleRate();
m_szNames[channel + 1] = "";
wavFile.ApplySampleSettings(sample, GetCharsetInternal(), m_szNames[channel + 1]);
if(wavFile.GetNumChannels() > 1)
{
// Pan all samples appropriately
switch(channel)
{
case 0:
sample.nPan = 0;
break;
case 1:
sample.nPan = 256;
break;
case 2:
sample.nPan = (wavFile.GetNumChannels() == 3 ? 128u : 64u);
pattern[channel].command = CMD_S3MCMDEX;
pattern[channel].param = 0x91;
break;
case 3:
sample.nPan = 192;
pattern[channel].command = CMD_S3MCMDEX;
pattern[channel].param = 0x91;
break;
default:
sample.nPan = 128;
break;
}
}
if(wavFile.GetBitsPerSample() > 8)
{
sample.uFlags.set(CHN_16BIT);
}
if(wavFile.GetSampleFormat() == WAVFormatChunk::fmtFloat)
{
if(wavFile.GetBitsPerSample() <= 32)
CopyWavChannel<SC::ConversionChain<SC::Convert<int16, float32>, SC::DecodeFloat32<littleEndian32>>>(sample, sampleChunk, channel, wavFile.GetNumChannels());
else
CopyWavChannel<SC::ConversionChain<SC::Convert<int16, float64>, SC::DecodeFloat64<littleEndian64>>>(sample, sampleChunk, channel, wavFile.GetNumChannels());
} else
{
if(wavFile.GetBitsPerSample() <= 8)
CopyWavChannel<SC::DecodeUint8>(sample, sampleChunk, channel, wavFile.GetNumChannels());
else if(wavFile.GetBitsPerSample() <= 16)
CopyWavChannel<SC::DecodeInt16<0, littleEndian16>>(sample, sampleChunk, channel, wavFile.GetNumChannels());
else if(wavFile.GetBitsPerSample() <= 24)
CopyWavChannel<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt24<0, littleEndian24>>>(sample, sampleChunk, channel, wavFile.GetNumChannels());
else if(wavFile.GetBitsPerSample() <= 32)
CopyWavChannel<SC::ConversionChain<SC::Convert<int16, int32>, SC::DecodeInt32<0, littleEndian32>>>(sample, sampleChunk, channel, wavFile.GetNumChannels());
else if(wavFile.GetBitsPerSample() <= 64)
CopyWavChannel<SC::ConversionChain<SC::Convert<int16, int64>, SC::DecodeInt64<0, littleEndian64>>>(sample, sampleChunk, channel, wavFile.GetNumChannels());
}
sample.PrecomputeLoops(*this, false);
}
return true;
}
OPENMPT_NAMESPACE_END
|
