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Diffstat (limited to 'contrib/ffmpeg/libavformat/rtp_internal.h')
| -rw-r--r-- | contrib/ffmpeg/libavformat/rtp_internal.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavformat/rtp_internal.h b/contrib/ffmpeg/libavformat/rtp_internal.h new file mode 100644 index 000000000..3edcf49c8 --- /dev/null +++ b/contrib/ffmpeg/libavformat/rtp_internal.h @@ -0,0 +1,110 @@ +/* + * RTP definitions + * Copyright (c) 2006 Ryan Martell <rdm4@martellventures.com> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +// this is a bit of a misnomer, because rtp & rtsp internal structures and prototypes are in here. +#ifndef RTP_INTERNAL_H +#define RTP_INTERNAL_H + +// these statistics are used for rtcp receiver reports... +typedef struct { + uint16_t max_seq; ///< highest sequence number seen + uint32_t cycles; ///< shifted count of sequence number cycles + uint32_t base_seq; ///< base sequence number + uint32_t bad_seq; ///< last bad sequence number + 1 + int probation; ///< sequence packets till source is valid + int received; ///< packets received + int expected_prior; ///< packets expected in last interval + int received_prior; ///< packets received in last interval + uint32_t transit; ///< relative transit time for previous packet + uint32_t jitter; ///< estimated jitter. +} RTPStatistics; + + +typedef int (*DynamicPayloadPacketHandlerProc) (struct RTPDemuxContext * s, + AVPacket * pkt, + uint32_t *timestamp, + const uint8_t * buf, + int len); + +typedef struct RTPDynamicProtocolHandler_s { + // fields from AVRtpDynamicPayloadType_s + const char enc_name[50]; /* XXX: still why 50 ? ;-) */ + enum CodecType codec_type; + enum CodecID codec_id; + + // may be null + int (*parse_sdp_a_line) (AVStream * stream, + void *protocol_data, + const char *line); ///< Parse the a= line from the sdp field + void *(*open) (); ///< allocate any data needed by the rtp parsing for this dynamic data. + void (*close)(void *protocol_data); ///< free any data needed by the rtp parsing for this dynamic data. + DynamicPayloadPacketHandlerProc parse_packet; ///< parse handler for this dynamic packet. + + struct RTPDynamicProtocolHandler_s *next; +} RTPDynamicProtocolHandler; + +// moved out of rtp.c, because the h264 decoder needs to know about this structure.. +struct RTPDemuxContext { + AVFormatContext *ic; + AVStream *st; + int payload_type; + uint32_t ssrc; + uint16_t seq; + uint32_t timestamp; + uint32_t base_timestamp; + uint32_t cur_timestamp; + int max_payload_size; + struct MpegTSContext *ts; /* only used for MP2T payloads */ + int read_buf_index; + int read_buf_size; + /* used to send back RTCP RR */ + URLContext *rtp_ctx; + char hostname[256]; + + RTPStatistics statistics; ///< Statistics for this stream (used by RTCP receiver reports) + + /* rtcp sender statistics receive */ + int64_t last_rtcp_ntp_time; // TODO: move into statistics + int64_t first_rtcp_ntp_time; // TODO: move into statistics + uint32_t last_rtcp_timestamp; // TODO: move into statistics + + /* rtcp sender statistics */ + unsigned int packet_count; // TODO: move into statistics (outgoing) + unsigned int octet_count; // TODO: move into statistics (outgoing) + unsigned int last_octet_count; // TODO: move into statistics (outgoing) + int first_packet; + /* buffer for output */ + uint8_t buf[RTP_MAX_PACKET_LENGTH]; + uint8_t *buf_ptr; + + /* special infos for au headers parsing */ + rtp_payload_data_t *rtp_payload_data; // TODO: Move into dynamic payload handlers + + /* dynamic payload stuff */ + DynamicPayloadPacketHandlerProc parse_packet; ///< This is also copied from the dynamic protocol handler structure + void *dynamic_protocol_context; ///< This is a copy from the values setup from the sdp parsing, in rtsp.c don't free me. +}; + +extern RTPDynamicProtocolHandler *RTPFirstDynamicPayloadHandler; + +int rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, char *value, int value_size); ///< from rtsp.c, but used by rtp dynamic protocol handlers. +#endif /* RTP_INTERNAL_H */ + |