147 lines
4.2 KiB
C
147 lines
4.2 KiB
C
/* $Id$ */
|
|
/*
|
|
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
|
|
*
|
|
* 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_H263_PACKETIZER_H__
|
|
#define __PJMEDIA_H263_PACKETIZER_H__
|
|
|
|
|
|
/**
|
|
* @file h263_packetizer.h
|
|
* @brief Packetizes/unpacketizes H.263 bitstream into RTP payload.
|
|
*/
|
|
|
|
#include <pj/pool.h>
|
|
#include <pj/types.h>
|
|
|
|
PJ_BEGIN_DECL
|
|
|
|
|
|
/**
|
|
* Opaque declaration for H.263 packetizer.
|
|
*/
|
|
typedef struct pjmedia_h263_packetizer pjmedia_h263_packetizer;
|
|
|
|
|
|
/**
|
|
* Enumeration of H.263 packetization modes.
|
|
*/
|
|
typedef enum
|
|
{
|
|
/**
|
|
* H.263 RTP packetization using RFC 4629.
|
|
*/
|
|
PJMEDIA_H263_PACKETIZER_MODE_RFC4629,
|
|
|
|
/**
|
|
* H.263 RTP packetization using legacy RFC 2190.
|
|
* This is currently not supported.
|
|
*/
|
|
PJMEDIA_H263_PACKETIZER_MODE_RFC2190,
|
|
|
|
} pjmedia_h263_packetizer_mode;
|
|
|
|
|
|
/**
|
|
* H.263 packetizer configuration.
|
|
*/
|
|
typedef struct pjmedia_h263_packetizer_cfg
|
|
{
|
|
/**
|
|
* Maximum payload length.
|
|
* Default: PJMEDIA_MAX_MTU
|
|
*/
|
|
int mtu;
|
|
|
|
/**
|
|
* Packetization mode.
|
|
* Default: PJMEDIA_H263_PACKETIZER_MODE_RFC4629
|
|
*/
|
|
pjmedia_h263_packetizer_mode mode;
|
|
|
|
} pjmedia_h263_packetizer_cfg;
|
|
|
|
|
|
/**
|
|
* Create H.263 packetizer.
|
|
*
|
|
* @param pool The memory pool.
|
|
* @param cfg Packetizer settings, if NULL, default setting
|
|
* will be used.
|
|
* @param p_pktz Pointer to receive the packetizer.
|
|
*
|
|
* @return PJ_SUCCESS on success.
|
|
*/
|
|
PJ_DECL(pj_status_t) pjmedia_h263_packetizer_create(
|
|
pj_pool_t *pool,
|
|
const pjmedia_h263_packetizer_cfg *cfg,
|
|
pjmedia_h263_packetizer **p_pktz);
|
|
|
|
|
|
/**
|
|
* Generate an RTP payload from a H.263 picture bitstream. Note that this
|
|
* function will apply in-place processing, so the bitstream may be modified
|
|
* during the packetization.
|
|
*
|
|
* @param pktz The packetizer.
|
|
* @param bits The picture bitstream to be packetized.
|
|
* @param bits_len The length of the bitstream.
|
|
* @param bits_pos The bitstream offset to be packetized.
|
|
* @param payload The output payload.
|
|
* @param payload_len The output payload length.
|
|
*
|
|
* @return PJ_SUCCESS on success.
|
|
*/
|
|
PJ_DECL(pj_status_t) pjmedia_h263_packetize(pjmedia_h263_packetizer *pktz,
|
|
pj_uint8_t *bits,
|
|
pj_size_t bits_len,
|
|
unsigned *bits_pos,
|
|
const pj_uint8_t **payload,
|
|
pj_size_t *payload_len);
|
|
|
|
|
|
/**
|
|
* Append an RTP payload to an H.263 picture bitstream. Note that in case of
|
|
* noticing packet lost, application should keep calling this function with
|
|
* payload pointer set to NULL, as the packetizer need to update its internal
|
|
* state.
|
|
*
|
|
* @param pktz The packetizer.
|
|
* @param payload The payload to be unpacketized.
|
|
* @param payload_len The payload length.
|
|
* @param bits The bitstream buffer.
|
|
* @param bits_size The bitstream buffer size.
|
|
* @param bits_pos The bitstream offset to put the unpacketized payload
|
|
* in the bitstream, upon return, this will be updated
|
|
* to the latest offset as a result of the unpacketized
|
|
* payload.
|
|
*
|
|
* @return PJ_SUCCESS on success.
|
|
*/
|
|
PJ_DECL(pj_status_t) pjmedia_h263_unpacketize(pjmedia_h263_packetizer *pktz,
|
|
const pj_uint8_t *payload,
|
|
pj_size_t payload_len,
|
|
pj_uint8_t *bits,
|
|
pj_size_t bits_size,
|
|
unsigned *bits_pos);
|
|
|
|
|
|
PJ_END_DECL
|
|
|
|
|
|
#endif /* __PJMEDIA_H263_PACKETIZER_H__ */
|