/* $Id: types.h 974 2007-02-19 01:13:53Z bennylp $ *//*  * Copyright (C) 2003-2007 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__ */