mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 17016 to svn://svn.ffmpeg.org/ffmpeg/trunkpull/126/head
Luca Abeni
16 years ago
parent
1a45a9f4c0
commit
302879cb36
15 changed files with 273 additions and 186 deletions
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/*
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* RTP demuxer definitions |
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* Copyright (c) 2002 Fabrice Bellard |
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* Copyright (c) 2006 Ryan Martell <rdm4@martellventures.com> |
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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_RTPDEC_H |
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#define AVFORMAT_RTPDEC_H |
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#include "libavcodec/avcodec.h" |
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#include "avformat.h" |
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#include "rtp.h" |
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/** Structure listing useful vars to parse RTP packet payload*/ |
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typedef struct rtp_payload_data |
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{ |
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int sizelength; |
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int indexlength; |
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int indexdeltalength; |
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int profile_level_id; |
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int streamtype; |
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int objecttype; |
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char *mode; |
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/** mpeg 4 AU headers */ |
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struct AUHeaders { |
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int size; |
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int index; |
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int cts_flag; |
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int cts; |
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int dts_flag; |
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int dts; |
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int rap_flag; |
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int streamstate; |
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} *au_headers; |
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int nb_au_headers; |
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int au_headers_length_bytes; |
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int cur_au_index; |
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} RTPPayloadData; |
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typedef struct PayloadContext PayloadContext; |
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typedef struct RTPDynamicProtocolHandler_s RTPDynamicProtocolHandler; |
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#define RTP_MIN_PACKET_LENGTH 12 |
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int rtp_get_codec_info(AVCodecContext *codec, int payload_type); |
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typedef struct RTPDemuxContext RTPDemuxContext; |
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RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, URLContext *rtpc, int payload_type, RTPPayloadData *rtp_payload_data); |
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void rtp_parse_set_dynamic_protocol(RTPDemuxContext *s, PayloadContext *ctx, |
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RTPDynamicProtocolHandler *handler); |
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int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt, |
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const uint8_t *buf, int len); |
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void rtp_parse_close(RTPDemuxContext *s); |
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int rtp_get_local_port(URLContext *h); |
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int rtp_set_remote_url(URLContext *h, const char *uri); |
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void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd); |
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/**
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* some rtp servers assume client is dead if they don't hear from them... |
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* so we send a Receiver Report to the provided ByteIO context |
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* (we don't have access to the rtcp handle from here) |
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*/ |
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int rtp_check_and_send_back_rr(RTPDemuxContext *s, int count); |
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// these statistics are used for rtcp receiver reports...
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typedef struct { |
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uint16_t max_seq; ///< highest sequence number seen
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uint32_t cycles; ///< shifted count of sequence number cycles
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uint32_t base_seq; ///< base sequence number
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uint32_t bad_seq; ///< last bad sequence number + 1
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int probation; ///< sequence packets till source is valid
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int received; ///< packets received
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int expected_prior; ///< packets expected in last interval
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int received_prior; ///< packets received in last interval
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uint32_t transit; ///< relative transit time for previous packet
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uint32_t jitter; ///< estimated jitter.
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} RTPStatistics; |
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/**
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* Packet parsing for "private" payloads in the RTP specs. |
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* |
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* @param ctx RTSP demuxer context |
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* @param s stream context |
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* @param st stream that this packet belongs to |
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* @param pkt packet in which to write the parsed data |
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* @param timestamp pointer in which to write the timestamp of this RTP packet |
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* @param buf pointer to raw RTP packet data |
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* @param len length of buf |
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* @param flags flags from the RTP packet header (PKT_FLAG_*) |
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*/ |
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typedef int (*DynamicPayloadPacketHandlerProc) (AVFormatContext *ctx, |
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PayloadContext *s, |
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AVStream *st, |
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AVPacket * pkt, |
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uint32_t *timestamp, |
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const uint8_t * buf, |
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int len, int flags); |
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struct RTPDynamicProtocolHandler_s { |
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// fields from AVRtpDynamicPayloadType_s
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const char enc_name[50]; /* XXX: still why 50 ? ;-) */ |
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enum CodecType codec_type; |
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enum CodecID codec_id; |
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// may be null
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int (*parse_sdp_a_line) (AVFormatContext *s, |
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int st_index, |
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PayloadContext *priv_data, |
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const char *line); ///< Parse the a= line from the sdp field
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PayloadContext *(*open) (); ///< allocate any data needed by the rtp parsing for this dynamic data.
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void (*close)(PayloadContext *protocol_data); ///< free any data needed by the rtp parsing for this dynamic data.
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DynamicPayloadPacketHandlerProc parse_packet; ///< parse handler for this dynamic packet.
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struct RTPDynamicProtocolHandler_s *next; |
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}; |
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// moved out of rtp.c, because the h264 decoder needs to know about this structure..
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struct RTPDemuxContext { |
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AVFormatContext *ic; |
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AVStream *st; |
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int payload_type; |
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uint32_t ssrc; |
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uint16_t seq; |
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uint32_t timestamp; |
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uint32_t base_timestamp; |
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uint32_t cur_timestamp; |
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int max_payload_size; |
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struct MpegTSContext *ts; /* only used for MP2T payloads */ |
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int read_buf_index; |
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int read_buf_size; |
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/* used to send back RTCP RR */ |
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URLContext *rtp_ctx; |
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char hostname[256]; |
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RTPStatistics statistics; ///< Statistics for this stream (used by RTCP receiver reports)
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/* rtcp sender statistics receive */ |
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int64_t last_rtcp_ntp_time; // TODO: move into statistics
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int64_t first_rtcp_ntp_time; // TODO: move into statistics
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uint32_t last_rtcp_timestamp; // TODO: move into statistics
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/* rtcp sender statistics */ |
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unsigned int packet_count; // TODO: move into statistics (outgoing)
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unsigned int octet_count; // TODO: move into statistics (outgoing)
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unsigned int last_octet_count; // TODO: move into statistics (outgoing)
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int first_packet; |
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/* buffer for output */ |
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uint8_t buf[RTP_MAX_PACKET_LENGTH]; |
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uint8_t *buf_ptr; |
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/* special infos for au headers parsing */ |
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RTPPayloadData *rtp_payload_data; // TODO: Move into dynamic payload handlers
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/* dynamic payload stuff */ |
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DynamicPayloadPacketHandlerProc parse_packet; ///< This is also copied from the dynamic protocol handler structure
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PayloadContext *dynamic_protocol_context; ///< This is a copy from the values setup from the sdp parsing, in rtsp.c don't free me.
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int max_frames_per_packet; |
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}; |
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extern RTPDynamicProtocolHandler *RTPFirstDynamicPayloadHandler; |
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void ff_register_dynamic_payload_handler(RTPDynamicProtocolHandler *handler); |
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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.
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const char *ff_rtp_enc_name(int payload_type); |
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enum CodecID ff_rtp_codec_id(const char *buf, enum CodecType codec_type); |
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void av_register_rtp_dynamic_payload_handlers(void); |
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#endif /* AVFORMAT_RTPDEC_H */ |
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@ -0,0 +1,61 @@ |
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/*
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* RTP muxer definitions |
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* Copyright (c) 2002 Fabrice Bellard |
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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_RTPENC_H |
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#define AVFORMAT_RTPENC_H |
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#include "avformat.h" |
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#include "rtp.h" |
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struct RTPMuxContext { |
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AVFormatContext *ic; |
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AVStream *st; |
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int payload_type; |
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uint32_t ssrc; |
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uint16_t seq; |
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uint32_t timestamp; |
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uint32_t base_timestamp; |
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uint32_t cur_timestamp; |
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int max_payload_size; |
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int num_frames; |
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/* rtcp sender statistics receive */ |
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int64_t last_rtcp_ntp_time; // TODO: move into statistics
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int64_t first_rtcp_ntp_time; // TODO: move into statistics
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/* rtcp sender statistics */ |
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unsigned int packet_count; // TODO: move into statistics (outgoing)
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unsigned int octet_count; // TODO: move into statistics (outgoing)
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unsigned int last_octet_count; // TODO: move into statistics (outgoing)
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int first_packet; |
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/* buffer for output */ |
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uint8_t buf[RTP_MAX_PACKET_LENGTH]; |
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uint8_t *buf_ptr; |
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int max_frames_per_packet; |
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}; |
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typedef struct RTPMuxContext RTPMuxContext; |
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void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m); |
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void ff_rtp_send_h264(AVFormatContext *s1, const uint8_t *buf1, int size); |
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#endif /* AVFORMAT_RTPENC_H */ |
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