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
|
/* udpsend~.h based on netsend~.h */
/* ------------------------ netsend~ ------------------------------------------ */
/* */
/* Tilde object to send uncompressed audio data to netreceive~. */
/* Written by Olaf Matthes <olaf.matthes@gmx.de>. */
/* Based on streamout~ by Guenter Geiger. */
/* Get source at http://www.akustische-kunst.org/ */
/* */
/* 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. */
/* */
/* See file LICENSE for further informations on licensing terms. */
/* */
/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* */
/* Based on PureData by Miller Puckette and others. */
/* */
/* This project was commissioned by the Society for Arts and Technology [SAT], */
/* Montreal, Quebec, Canada, http://www.sat.qc.ca/. */
/* */
/* ---------------------------------------------------------------------------- */
/* This file is based on and inspired by stream.h (C) Guenter Geiger 1999. */
/* Some enhancements have been made with the goal of keeping compatibility */
/* between the stream formats of streamout~/in~ and netsend~/receive~. */
#define VERSION "0.1"
#define DEFAULT_AUDIO_CHANNELS 32 /* nax. number of audio channels we support */
#define DEFAULT_AUDIO_BUFFER_SIZE 2048 /*1024*/ /* number of samples in one audio block */
#define DEFAULT_UDP_PACKT_SIZE 8192 /* number of bytes we send in one UDP datagram (OS X only) */
#define DEFAULT_PORT 8000 /* default network port number */
#ifdef _WIN32
#ifndef HAVE_INT32_T
typedef int int32_t;
#define HAVE_INT32_T
#endif
#ifndef HAVE_INT16_T
typedef short int16_t;
#define HAVE_INT16_T
#endif
#ifndef HAVE_U_INT32_T
typedef unsigned int u_int32_t;
#define HAVE_U_INT32_T
#endif
#ifndef HAVE_U_INT16_T
typedef unsigned short u_int16_t;
#define HAVE_U_INT16_T
#endif
#endif
#ifndef CLIP
#define CLIP(a, lo, hi) ( (a)>(lo)?( (a)<(hi)?(a):(hi) ):(lo) )
#endif
/* swap 32bit t_float. Is there a better way to do that???? */
#ifdef _WIN32
__inline static float netsend_float(float f)
#else
inline static float netsend_float(float f)
#endif
{
union
{
float f;
unsigned char b[4];
} dat1, dat2;
dat1.f = f;
dat2.b[0] = dat1.b[3];
dat2.b[1] = dat1.b[2];
dat2.b[2] = dat1.b[1];
dat2.b[3] = dat1.b[0];
return dat2.f;
}
/* swap 32bit long int */
#ifdef _WIN32
__inline static long netsend_long(long n)
#else
inline static long netsend_long(long n)
#endif
{
return (((n & 0xff) << 24) | ((n & 0xff00) << 8) |
((n & 0xff0000) >> 8) | ((n & 0xff000000) >> 24));
}
/* swap 16bit short int */
#ifdef _WIN32
__inline static long netsend_short(long n)
#else
inline static short netsend_short(short n)
#endif
{
return (((n & 0xff) << 8) | ((n & 0xff00) >> 8));
}
/* format specific stuff */
#define SF_FLOAT 1
#define SF_DOUBLE 2 /* not implemented */
#define SF_8BIT 10
#define SF_16BIT 11
#define SF_32BIT 12 /* not implemented */
#define SF_ALAW 20 /* not implemented */
#define SF_MP3 30 /* not implemented */
#define SF_AAC 31 /* AAC encoding using FAAC */
#define SF_VORBIS 40 /* not implemented */
#define SF_FLAC 50 /* not implemented */
#define SF_SIZEOF(a) (a == SF_FLOAT ? sizeof(t_float) : \
a == SF_16BIT ? sizeof(short) : 1)
/* version / byte-endian specific stuff */
#define SF_BYTE_LE 1 /* little endian */
#define SF_BYTE_BE 2 /* big endian */
#if defined(_WIN32) || defined(__linux__) || defined(IRIX)
#define SF_BYTE_NATIVE SF_BYTE_LE
#else /* must be __APPLE__ */
#define SF_BYTE_NATIVE SF_BYTE_BE
#endif
typedef struct _tag
{ /* size (bytes) */
char version; /* 1 */
char format; /* 1 */
long count; /* 4 */
char channels; /* 1 */
long framesize; /* 4 */
char extension[5]; /* 5 */
} t_tag; /*--------------*/
/* 16 */
typedef struct _frame
{
t_tag tag;
char *data;
} t_frame;
/* fin udpsend~.h */
|
