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/* 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 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 */
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