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
|
/* ------------------------------------------------------------------
* Copyright (C) 2015 Matthias P. Braendli
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied.
* See the License for the specific language governing permissions
* and limitations under the License.
* -------------------------------------------------------------------
*/
#ifndef __VLC_INPUT_H_
#define __VLC_INPUT_H_
#include "config.h"
#if HAVE_VLC
#include <cstdio>
#include <string>
#include <vector>
#include <deque>
#include <thread>
#include <mutex>
#include <future>
#include <vlc/vlc.h>
#include "SampleQueue.h"
// 16 bits per sample is fine for now
#define BYTES_PER_SAMPLE 2
class VLCInput
{
public:
VLCInput(const std::string& uri,
int rate,
unsigned channels,
unsigned verbosity,
std::string& gain,
std::string& cache) :
m_uri(uri),
m_verbosity(verbosity),
m_channels(channels),
m_rate(rate),
m_cache(cache),
m_gain(gain),
m_vlc(nullptr),
m_mp(nullptr) { }
~VLCInput() { cleanup(); }
/* Prepare the audio input */
int prepare();
/* Read exactly length bytes into buf.
* Blocks if not enough data is available,
* or returns zero if EOF reached.
*
* Returns the number of bytes written into
* the buffer.
*/
ssize_t read(uint8_t* buf, size_t length);
/* Write the last received ICY-Text to the
* file.
*/
void write_icy_text(const std::string& filename);
// Callbacks for VLC
/* Notification of VLC exit */
void exit_cb(void);
/* Prepare a buffer for VLC */
void preRender_cb(
uint8_t** pp_pcm_buffer,
size_t size);
/* Notification from VLC that the buffer is now filled
*/
void postRender_cb();
int getRate() { return m_rate; }
int getChannels() { return m_channels; }
protected:
void cleanup(void);
ssize_t m_read(uint8_t* buf, size_t length);
std::vector<uint8_t> m_current_buf;
mutable std::mutex m_queue_mutex;
std::deque<uint8_t> m_queue;
std::string m_uri;
unsigned m_verbosity;
unsigned m_channels;
int m_rate;
// Whether to enable network caching in VLC or not
std::string m_cache;
// value for the VLC compressor filter
std::string m_gain;
std::future<bool> icy_text_written;
std::string m_nowplaying;
std::string m_nowplaying_previous;
// VLC pointers
libvlc_instance_t *m_vlc;
libvlc_media_player_t *m_mp;
private:
VLCInput(const VLCInput& other) {}
};
#endif // HAVE_VLC
#endif
|
