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
|
/*
* StreamEncoderOpus.cpp
* ---------------------
* Purpose: Exporting streamed music files.
* Notes : none
* Authors: Joern Heusipp
* OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "StreamEncoder.h"
#include "StreamEncoderOpus.h"
#include <sstream>
#include "Mptrack.h"
#include <deque>
#if defined(MPT_WITH_OPUS) && defined(MPT_WITH_OPUSENC)
#include <opusenc.h>
#endif
OPENMPT_NAMESPACE_BEGIN
static Encoder::Traits BuildTraits()
{
Encoder::Traits traits;
#if defined(MPT_WITH_OPUS) && defined(MPT_WITH_OPUSENC)
traits.fileExtension = P_("opus");
traits.fileShortDescription = U_("Opus");
traits.fileDescription = U_("Ogg Opus");
traits.encoderSettingsName = U_("Opus");
traits.canTags = true;
traits.maxChannels = 4;
traits.samplerates = mpt::make_vector(opus_all_samplerates);
traits.modes = Encoder::ModeCBR | Encoder::ModeVBR;
traits.bitrates = mpt::make_vector(opus_bitrates);
traits.defaultSamplerate = 48000;
traits.defaultChannels = 2;
traits.defaultMode = Encoder::ModeVBR;
traits.defaultBitrate = 128;
#endif
return traits;
}
#if defined(MPT_WITH_OPUS) && defined(MPT_WITH_OPUSENC)
class OpusStreamWriter : public StreamWriterBase
{
private:
OpusEncCallbacks ope_callbacks;
OggOpusComments *ope_comments;
OggOpusEnc *ope_encoder;
std::vector<std::pair<std::string, std::string> > opus_comments;
private:
static int CallbackWrite(void *user_data, const unsigned char *ptr, opus_int32 len)
{
return reinterpret_cast<OpusStreamWriter*>(user_data)->CallbackWriteImpl(ptr, len);
}
static int CallbackClose(void *user_data)
{
return reinterpret_cast<OpusStreamWriter*>(user_data)->CallbackCloseImpl();
}
int CallbackWriteImpl(const unsigned char *ptr, opus_int32 len)
{
if(len < 0)
{
return 1;
}
if(!ptr && len > 0)
{
return 1;
}
buf.assign(ptr, ptr + len);
WriteBuffer();
return 0;
}
int CallbackCloseImpl()
{
return 0;
}
private:
void AddCommentField(const std::string &field, const mpt::ustring &data)
{
if(!field.empty() && !data.empty())
{
opus_comments.push_back(std::make_pair(field, mpt::ToCharset(mpt::Charset::UTF8, data)));
}
}
public:
OpusStreamWriter(std::ostream &stream, const Encoder::Settings &settings, const FileTags &tags)
: StreamWriterBase(stream)
{
ope_callbacks.write = &CallbackWrite;
ope_callbacks.close = &CallbackClose;
opus_comments.clear();
bool opus_cbr = (settings.Mode == Encoder::ModeCBR);
int opus_bitrate = settings.Bitrate * 1000;
if(settings.Tags)
{
AddCommentField("ENCODER", tags.encoder);
AddCommentField("SOURCEMEDIA", U_("tracked music file"));
AddCommentField("TITLE", tags.title );
AddCommentField("ARTIST", tags.artist );
AddCommentField("ALBUM", tags.album );
AddCommentField("DATE", tags.year );
AddCommentField("COMMENT", tags.comments );
AddCommentField("GENRE", tags.genre );
AddCommentField("CONTACT", tags.url );
AddCommentField("BPM", tags.bpm ); // non-standard
AddCommentField("TRACKNUMBER", tags.trackno );
}
int ope_error = 0;
ope_comments = ope_comments_create();
if(settings.Tags && ope_comments)
{
for(const auto & comment : opus_comments)
{
ope_comments_add(ope_comments, comment.first.c_str(), comment.second.c_str());
}
}
ope_encoder = ope_encoder_create_callbacks(&ope_callbacks, this, ope_comments, settings.Samplerate, settings.Channels, settings.Channels > 2 ? 1 : 0, &ope_error);
opus_int32 ctl_serial = mpt::random<uint32>(theApp.PRNG());
ope_encoder_ctl(ope_encoder, OPE_SET_SERIALNO(ctl_serial));
opus_int32 ctl_bitrate = opus_bitrate;
ope_encoder_ctl(ope_encoder, OPUS_SET_BITRATE(ctl_bitrate));
if(opus_cbr)
{
opus_int32 ctl_vbr = 0;
ope_encoder_ctl(ope_encoder, OPUS_SET_VBR(ctl_vbr));
} else
{
opus_int32 ctl_vbr = 1;
ope_encoder_ctl(ope_encoder, OPUS_SET_VBR(ctl_vbr));
opus_int32 ctl_vbrcontraint = 0;
ope_encoder_ctl(ope_encoder, OPUS_SET_VBR_CONSTRAINT(ctl_vbrcontraint));
}
opus_int32 complexity = settings.Details.OpusComplexity;
if(complexity >= 0)
{
ope_encoder_ctl(ope_encoder, OPUS_SET_COMPLEXITY(complexity));
}
ope_encoder_flush_header(ope_encoder);
}
void WriteInterleaved(size_t count, const float *interleaved) override
{
while(count > 0)
{
ope_encoder_write_float(ope_encoder, interleaved, mpt::saturate_cast<int>(count));
count -= static_cast<size_t>(mpt::saturate_cast<int>(count));
}
}
void WriteFinalize() override
{
ope_encoder_drain(ope_encoder);
}
virtual ~OpusStreamWriter()
{
ope_encoder_destroy(ope_encoder);
ope_encoder = NULL;
ope_comments_destroy(ope_comments);
ope_comments = NULL;
}
};
#endif // MPT_WITH_OGG
OggOpusEncoder::OggOpusEncoder()
{
SetTraits(BuildTraits());
}
bool OggOpusEncoder::IsAvailable() const
{
#if defined(MPT_WITH_OPUS) && defined(MPT_WITH_OPUSENC)
return true;
#else
return false;
#endif
}
std::unique_ptr<IAudioStreamEncoder> OggOpusEncoder::ConstructStreamEncoder(std::ostream &file, const Encoder::Settings &settings, const FileTags &tags) const
{
if(!IsAvailable())
{
return nullptr;
}
#if defined(MPT_WITH_OPUS) && defined(MPT_WITH_OPUSENC)
return std::make_unique<OpusStreamWriter>(file, settings, tags);
#else
return nullptr;
#endif
}
OPENMPT_NAMESPACE_END
|
