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
|
/*
Copyright (C) 2000 Stefan Westerfeld
[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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Permission is also granted to link this program with the Qt
library, treating Qt like a library that normally accompanies the
operating system kernel, whether or not that is in fact the case.
*/
#include "soundserver.h"
#include "stdsynthmodule.h"
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <iostream>
#include <math.h>
using namespace std;
using namespace Arts;
class Sender : public ByteSoundProducer_skel,
public StdSynthModule
{
bool _finished;
int pos;
public:
Sender() : _finished(false), pos(0)
{
}
long samplingRate() { return 44100; }
long channels() { return 2; }
long bits() { return 16; }
bool finished() { return _finished; }
static const int packetCount = 10, packetCapacity = 1024;
void streamStart()
{
/*
* start streaming
*/
outdata.setPull(packetCount, packetCapacity);
}
void request_outdata(DataPacket<mcopbyte> *packet)
{
/*
* fill the packet with new data
*/
// ----------------- audio fill up start -----------------
int j;
mcopbyte *to = &packet->contents[0];
for(j=0;j<packetCapacity/4;j++)
{
// generate two sin waves
float fpos = ((float)pos)/44100.0;
long left = (long)(sin(fpos*6.28*440.0)*30000.0);
long right = (long)(sin(fpos*6.28*880.0)*30000.0);
pos++;
// put the samples in the packet
*to++ = left & 0xff;
*to++ = (left >> 8) & 0xff;
*to++ = right & 0xff;
*to++ = (right >> 8) & 0xff;
}
// ------------------ audio fill up end ------------------
packet->send();
}
};
int main(int argc, char **argv)
{
Dispatcher dispatcher;
SimpleSoundServer server = Reference("global:Arts_SimpleSoundServer");
if(server.isNull())
{
cerr << "Can't connect to sound server" << endl;
return 1;
}
ByteSoundProducer sender = ByteSoundProducer::_from_base(new Sender());
server.attach(sender);
sender.start();
dispatcher.run();
server.detach(sender); // in this example: not reached
}
|
