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93 lines
3.5 KiB
93 lines
3.5 KiB
/* |
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* Realmedia RTSP (RDT) definitions |
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* Copyright (c) 2007 Ronald S. Bultje <rbultje@ronald.bitfreak.net> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVFORMAT_RDT_H |
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#define AVFORMAT_RDT_H |
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#include <stdint.h> |
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#include "avformat.h" |
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#include "rtp.h" |
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typedef struct RDTDemuxContext RDTDemuxContext; |
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RDTDemuxContext *ff_rdt_parse_open(AVFormatContext *ic, AVStream *st, |
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void *priv_data, |
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RTPDynamicProtocolHandler *handler); |
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void ff_rdt_parse_close(RDTDemuxContext *s); |
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/** |
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* Calculate the response (RealChallenge2 in the RTSP header) to the |
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* challenge (RealChallenge1 in the RTSP header from the Real/Helix |
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* server), which is used as some sort of client validation. |
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* |
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* @param response pointer to response buffer, it should be at least 41 bytes |
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* (40 data + 1 zero) bytes long. |
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* @param chksum pointer to buffer containing a checksum of the response, |
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* it should be at least 9 (8 data + 1 zero) bytes long. |
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* @param challenge pointer to the RealChallenge1 value provided by the |
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* server. |
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*/ |
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void ff_rdt_calc_response_and_checksum(char response[41], char chksum[9], |
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const char *challenge); |
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/** |
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* Register RDT-related dynamic payload handlers with our cache. |
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*/ |
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void av_register_rdt_dynamic_payload_handlers(void); |
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/** |
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* Add subscription information to Subscribe parameter string. |
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* |
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* @param cmd string to write the subscription information into. |
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* @param size size of cmd. |
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* @param stream_nr stream number. |
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* @param rule_nr rule number to conform to. |
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*/ |
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void ff_rdt_subscribe_rule(char *cmd, int size, |
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int stream_nr, int rule_nr); |
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// FIXME this will be removed ASAP |
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void ff_rdt_subscribe_rule2(RDTDemuxContext *s, char *cmd, int size, |
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int stream_nr, int rule_nr); |
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/** |
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* Parse RDT-style packet header. |
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* |
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* @param buf input buffer |
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* @param len length of input buffer |
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* @param set_id will be set to the set ID this packet belongs to |
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* @param seq_no will be set to the sequence number of the packet |
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* @param stream_id will be set to the stream ID this packet belongs to |
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* @param is_keyframe will be whether this packet belongs to a keyframe |
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* @param timestamp will be set to the timestamp of the packet |
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* @return the amount of bytes consumed, or <0 on error |
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*/ |
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int ff_rdt_parse_header(const uint8_t *buf, int len, |
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int *set_id, int *seq_no, int *stream_id, |
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int *is_keyframe, uint32_t *timestamp); |
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/** |
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* Parse RDT-style packet data (header + media data). |
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* Usage similar to rtp_parse_packet(). |
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*/ |
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int ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt, |
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const uint8_t *buf, int len); |
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#endif /* AVFORMAT_RDT_H */
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