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/* $Id$ */
/*
* Copyright (C) 2003-2006 Benny Prijono <benny@prijono.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.
*
* 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
*/
#ifndef __PJMEDIA_TYPES_H__
#define __PJMEDIA_TYPES_H__
/**
* @file pjmedia/types.h Basic Types
* @brief Basic PJMEDIA types.
*/
#include <pjmedia/config.h>
#include <pj/sock.h> /* pjmedia_sock_info */
#include <pj/string.h> /* pj_memcpy(), pj_memset() */
/**
* @defgroup PJMEDIA_FRAME_OP Frame Operations
* @ingroup PJMEDIA
*/
/**
* @defgroup PJMEDIA_MISC Misc
* @ingroup PJMEDIA
*/
/**
* @defgroup PJMEDIA_TYPES Basic Types
* @ingroup PJMEDIA_BASE
* @brief Basic PJMEDIA types and operations.
* @{
*/
/**
* Top most media type.
*/
typedef enum pjmedia_type
{
/** No type. */
PJMEDIA_TYPE_NONE = 0,
/** The media is audio */
PJMEDIA_TYPE_AUDIO = 1,
/** The media is video. */
PJMEDIA_TYPE_VIDEO = 2,
/** Unknown media type, in this case the name will be specified in
* encoding_name.
*/
PJMEDIA_TYPE_UNKNOWN = 3
} pjmedia_type;
/**
* Media direction.
*/
typedef enum pjmedia_dir
{
/** None */
PJMEDIA_DIR_NONE = 0,
/** Encoding (outgoing to network) stream */
PJMEDIA_DIR_ENCODING = 1,
/** Decoding (incoming from network) stream. */
PJMEDIA_DIR_DECODING = 2,
/** Incoming and outgoing stream. */
PJMEDIA_DIR_ENCODING_DECODING = 3
} pjmedia_dir;
/* Alternate names for media direction: */
/**
* Direction is capturing audio frames.
*/
#define PJMEDIA_DIR_CAPTURE PJMEDIA_DIR_ENCODING
/**
* Direction is playback of audio frames.
*/
#define PJMEDIA_DIR_PLAYBACK PJMEDIA_DIR_DECODING
/**
* Direction is both capture and playback.
*/
#define PJMEDIA_DIR_CAPTURE_PLAYBACK PJMEDIA_DIR_ENCODING_DECODING
/**
* Create 32bit port signature from ASCII characters.
*/
#define PJMEDIA_PORT_SIGNATURE(a,b,c,d) \
(a<<24 | b<<16 | c<<8 | d)
/**
* Opague declaration of media endpoint.
*/
typedef struct pjmedia_endpt pjmedia_endpt;
/*
* Forward declaration for stream (needed by transport).
*/
typedef struct pjmedia_stream pjmedia_stream;
/**
* Media socket info is used to describe the underlying sockets
* to be used as media transport.
*/
typedef struct pjmedia_sock_info
{
/** The RTP socket handle */
pj_sock_t rtp_sock;
/** Address to be advertised as the local address for the RTP
* socket, which does not need to be equal as the bound
* address (for example, this address can be the address resolved
* with STUN).
*/
pj_sockaddr_in rtp_addr_name;
/** The RTCP socket handle. */
pj_sock_t rtcp_sock;
/** Address to be advertised as the local address for the RTCP
* socket, which does not need to be equal as the bound
* address (for example, this address can be the address resolved
* with STUN).
*/
pj_sockaddr_in rtcp_addr_name;
} pjmedia_sock_info;
/**
* This is a general purpose function set PCM samples to zero.
* Since this function is needed by many parts of the library,
* by putting this functionality in one place, it enables some.
* clever people to optimize this function.
*
* @param samples The 16bit PCM samples.
* @param count Number of samples.
*/
PJ_INLINE(void) pjmedia_zero_samples(pj_int16_t *samples, unsigned count)
{
#if 1
pj_bzero(samples, count*sizeof(pj_int16_t));
#elif 0
unsigned i;
for (i=0; i<count; ++i) samples[i] = 0;
#else
unsigned i;
count >>= 1;
for (i=0; i<count; ++i) ((pj_int32_t*)samples)[i] = (pj_int32_t)0;
#endif
}
/**
* This is a general purpose function to copy samples from/to buffers with
* equal size. Since this function is needed by many parts of the library,
* by putting this functionality in one place, it enables some.
* clever people to optimize this function.
*/
PJ_INLINE(void) pjmedia_copy_samples(pj_int16_t *dst, const pj_int16_t *src,
unsigned count)
{
#if 1
pj_memcpy(dst, src, count*sizeof(pj_int16_t));
#elif 0
unsigned i;
for (i=0; i<count; ++i) dst[i] = src[i];
#else
unsigned i;
count >>= 1;
for (i=0; i<count; ++i)
((pj_int32_t*)dst)[i] = ((pj_int32_t*)src)[i];
#endif
}
/**
* @}
*/
#endif /* __PJMEDIA_TYPES_H__ */
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