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
|
/***************************************************************************
encoder_mp3.cpp
-------------------
begin : Sat Aug 20 2005
copyright : (C) 2005 by Martin Witte
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "encoder_mp3.h"
#include <tqmutex.h>
#include <klocale.h>
RecordingEncodingMP3::RecordingEncodingMP3(TQObject *parent, SoundStreamID ssid,
const RecordingConfig &cfg, const RadioStation *rs,
const TQString &filename)
: RecordingEncoding(parent, ssid, cfg, rs, filename)
#ifdef HAVE_LAME
,
m_MP3Buffer(NULL),
m_MP3BufferSize(0),
m_MP3Output(NULL),
m_ID3Tags(NULL),
m_LAMEFlags(NULL),
m_MP3LBuffer(NULL),
m_MP3RBuffer(NULL)
#endif
{
m_config.m_OutputFormat = RecordingConfig::outputMP3;
m_config.m_SoundFormat.m_Encoding = "mp3";
openOutput(filename);
}
RecordingEncodingMP3::~RecordingEncodingMP3()
{
closeOutput();
}
static TQMutex lameSerialization;
void RecordingEncodingMP3::encode(const char *_buffer, size_t buffer_size, char *&export_buffer, size_t &export_buffer_size)
{
if (m_error)
return;
#ifdef HAVE_LAME
short int *buffer = (short int*)_buffer;
size_t j = 0,
j_inc = (m_config.m_SoundFormat.m_Channels == 1) ? 1 : 2,
dj = (m_config.m_SoundFormat.m_Channels == 1) ? 0 : 1,
samples = buffer_size / m_config.m_SoundFormat.frameSize();
for (size_t i = 0; i < samples; ++i, j+=j_inc) {
m_MP3LBuffer[i] = buffer[j];
m_MP3RBuffer[i] = buffer[j+dj];
}
int n = 0;
lameSerialization.lock();
n = lame_encode_buffer(m_LAMEFlags,
m_MP3LBuffer,
m_MP3RBuffer,
samples,
m_MP3Buffer,
m_MP3BufferSize);
lameSerialization.unlock();
if (n < 0) {
m_errorString += i18n("Error %1 while encoding mp3. ").tqarg(TQString().setNum(n));
m_error = true;
} else if (n > 0) {
m_encodedSize += n;
export_buffer = (char*)m_MP3Buffer;
export_buffer_size = n;
int r = fwrite(m_MP3Buffer, 1, n, m_MP3Output);
if (r <= 0) {
m_errorString += i18n("Error %1 writing output. ").tqarg(TQString().setNum(r));
m_error = true;
}
}
#endif
}
bool RecordingEncodingMP3::openOutput(const TQString &output)
{
#ifdef HAVE_LAME
// m_output = NULL;
m_LAMEFlags = lame_init();
if (!m_LAMEFlags) {
m_error = true;
m_errorString += i18n("Cannot initialize lalibmp3lame. ");
} else {
lame_set_in_samplerate(m_LAMEFlags, m_config.m_SoundFormat.m_SampleRate);
lame_set_num_channels(m_LAMEFlags, 2);
//lame_set_quality(m_LAMEFlags, m_config.mp3Quality);
lame_set_mode(m_LAMEFlags, m_config.m_SoundFormat.m_Channels == 1 ? MONO : JOINT_STEREO);
// lame_seterrorf(m_LAMEFlags, ...);
// lame_setdebugf(m_LAMEFlags, ...);
// lame_setmsgf(m_LAMEFlags, ...);
lame_set_VBR(m_LAMEFlags, vbr_default);
lame_set_VBR_q(m_LAMEFlags, m_config.m_mp3Quality);
if (lame_init_params(m_LAMEFlags) < 0) {
m_error = true;
m_errorString += i18n("Cannot initialize libmp3lame parameters. ").tqarg(output);
}
if (!m_error) {
id3tag_init(m_LAMEFlags);
id3tag_add_v2(m_LAMEFlags);
TQString title = m_RadioStation->name() + TQString().sprintf(" - %s", (TQDateTime::tqcurrentDateTime().toString(Qt::ISODate)).ascii());
TQString comment = i18n("Recorded by KRadio");
size_t l = title.length() + comment.length() + 10;
m_ID3Tags = new char[l];
char *ctitle = m_ID3Tags;
strcpy(ctitle, title.latin1());
char *ccomment = m_ID3Tags + strlen(ctitle) + 1;
strcpy(ccomment, comment.latin1());
id3tag_set_title(m_LAMEFlags, ctitle);
id3tag_set_comment(m_LAMEFlags, ccomment);
}
m_MP3Output = fopen(output.ascii(), "wb+");
if (!m_MP3Output) {
m_errorString += i18n("Cannot open output file %1. ").tqarg(output);
m_error = true;
}
size_t nSamples = m_config.m_EncodeBufferSize / m_config.m_SoundFormat.frameSize();
m_MP3BufferSize = nSamples + nSamples / 4 + 7200;
m_MP3Buffer = new unsigned char[m_MP3BufferSize];
m_MP3LBuffer = new short int[nSamples];
m_MP3RBuffer = new short int[nSamples];
if (!m_MP3Buffer || !m_MP3LBuffer || !m_MP3RBuffer) {
m_error = true;
m_errorString += i18n("Cannot allocate buffers for mp3 encoding. ");
}
}
if (m_error) {
if (m_LAMEFlags) lame_close(m_LAMEFlags);
m_LAMEFlags = NULL;
if (m_MP3Output) fclose(m_MP3Output);
m_MP3Output = NULL;
if (m_MP3Buffer) delete [] m_MP3Buffer;
m_MP3Buffer = NULL;
m_MP3BufferSize = 0;
if (m_ID3Tags) delete [] m_ID3Tags;
m_ID3Tags = NULL;
if (m_MP3LBuffer) delete[] m_MP3LBuffer;
if (m_MP3RBuffer) delete[] m_MP3RBuffer;
m_MP3LBuffer = m_MP3RBuffer = NULL;
}
#endif
return !m_error;
}
void RecordingEncodingMP3::closeOutput()
{
#ifdef HAVE_LAME
if (m_LAMEFlags) {
if (m_config.m_OutputFormat == RecordingConfig::outputMP3) {
int n = lame_encode_flush(m_LAMEFlags,
m_MP3Buffer,
m_MP3BufferSize);
if (n < 0) {
m_error = true;
m_errorString += i18n("Error %1 while encoding mp3. ").tqarg(TQString().setNum(n));
} else if (n > 0) {
int r = fwrite(m_MP3Buffer, 1, n, m_MP3Output);
if (r <= 0) {
m_error = true;
m_errorString += i18n("Error %1 writing output. ").tqarg(TQString().setNum(r));
} else {
lame_mp3_tags_fid(m_LAMEFlags, m_MP3Output);
}
}
}
if (m_LAMEFlags) lame_close(m_LAMEFlags);
m_LAMEFlags = NULL;
if (m_MP3Output) fclose(m_MP3Output);
m_MP3Output = NULL;
m_MP3BufferSize = 0;
if (m_MP3Buffer) delete [] m_MP3Buffer;
m_MP3Buffer = NULL;
if (m_ID3Tags) delete [] m_ID3Tags;
m_ID3Tags = NULL;
if (m_MP3LBuffer) delete[] m_MP3LBuffer;
if (m_MP3RBuffer) delete[] m_MP3RBuffer;
m_MP3LBuffer = m_MP3RBuffer = NULL;
}
#endif
}
|
