X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Frtpdec.h;h=55399364ac77c595e063d77799686415877de4b5;hb=a4adabb460ace39783d707a5b3bbe28b4b5b9dc4;hp=aa686da7bb510ede627b56d48a7fcdc01725ec33;hpb=d74c6145fb1873a7c301581756fba88465e078e5;p=ffmpeg diff --git a/libavformat/rtpdec.h b/libavformat/rtpdec.h index aa686da7bb5..55399364ac7 100644 --- a/libavformat/rtpdec.h +++ b/libavformat/rtpdec.h @@ -3,56 +3,54 @@ * Copyright (c) 2002 Fabrice Bellard * Copyright (c) 2006 Ryan Martell * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ + #ifndef AVFORMAT_RTPDEC_H #define AVFORMAT_RTPDEC_H #include "libavcodec/avcodec.h" #include "avformat.h" #include "rtp.h" - -#define SPACE_CHARS " \t\r\n" +#include "url.h" +#include "srtp.h" typedef struct PayloadContext PayloadContext; -typedef struct RTPDynamicProtocolHandler_s RTPDynamicProtocolHandler; +typedef struct RTPDynamicProtocolHandler RTPDynamicProtocolHandler; #define RTP_MIN_PACKET_LENGTH 12 -#define RTP_MAX_PACKET_LENGTH 1500 /* XXX: suppress this define */ +#define RTP_MAX_PACKET_LENGTH 8192 + +#define RTP_REORDER_QUEUE_DEFAULT_SIZE 10 #define RTP_NOTS_VALUE ((uint32_t)-1) typedef struct RTPDemuxContext RTPDemuxContext; -RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, URLContext *rtpc, int payload_type); -void rtp_parse_set_dynamic_protocol(RTPDemuxContext *s, PayloadContext *ctx, - RTPDynamicProtocolHandler *handler); -int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt, - const uint8_t *buf, int len); -void rtp_parse_close(RTPDemuxContext *s); -#if (LIBAVFORMAT_VERSION_MAJOR <= 53) -int rtp_get_local_port(URLContext *h); -#endif -int rtp_get_local_rtp_port(URLContext *h); -int rtp_get_local_rtcp_port(URLContext *h); - -int rtp_set_remote_url(URLContext *h, const char *uri); -#if (LIBAVFORMAT_VERSION_MAJOR <= 52) -void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd); -#endif +RTPDemuxContext *ff_rtp_parse_open(AVFormatContext *s1, AVStream *st, + int payload_type, int queue_size); +void ff_rtp_parse_set_dynamic_protocol(RTPDemuxContext *s, PayloadContext *ctx, + RTPDynamicProtocolHandler *handler); +void ff_rtp_parse_set_crypto(RTPDemuxContext *s, const char *suite, + const char *params); +int ff_rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt, + uint8_t **buf, int len); +void ff_rtp_parse_close(RTPDemuxContext *s); +int64_t ff_rtp_queued_packet_time(RTPDemuxContext *s); +void ff_rtp_reset_packet_queue(RTPDemuxContext *s); /** * Send a dummy packet on both port pairs to set up the connection @@ -65,25 +63,28 @@ void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd); * The same routine is used with RDT too, even if RDT doesn't use normal * RTP packets otherwise. */ -void rtp_send_punch_packets(URLContext* rtp_handle); +void ff_rtp_send_punch_packets(URLContext* rtp_handle); /** * some rtp servers assume client is dead if they don't hear from them... - * so we send a Receiver Report to the provided ByteIO context + * so we send a Receiver Report to the provided URLContext or AVIOContext * (we don't have access to the rtcp handle from here) */ -int rtp_check_and_send_back_rr(RTPDemuxContext *s, int count); +int ff_rtp_check_and_send_back_rr(RTPDemuxContext *s, URLContext *fd, + AVIOContext *avio, int count); +int ff_rtp_send_rtcp_feedback(RTPDemuxContext *s, URLContext *fd, + AVIOContext *avio); // these statistics are used for rtcp receiver reports... -typedef struct { +typedef struct RTPStatistics { 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 received; ///< packets received + uint32_t expected_prior; ///< packets expected in last interval + uint32_t received_prior; ///< packets received in last interval uint32_t transit; ///< relative transit time for previous packet uint32_t jitter; ///< estimated jitter. } RTPStatistics; @@ -97,38 +98,52 @@ typedef struct { * @param s stream context * @param st stream that this packet belongs to * @param pkt packet in which to write the parsed data - * @param timestamp pointer in which to write the timestamp of this RTP packet + * @param timestamp pointer to the RTP timestamp of the input data, can be + * updated by the function if returning older, buffered data * @param buf pointer to raw RTP packet data * @param len length of buf + * @param seq RTP sequence number of the packet * @param flags flags from the RTP packet header (RTP_FLAG_*) */ -typedef int (*DynamicPayloadPacketHandlerProc) (AVFormatContext *ctx, - PayloadContext *s, - AVStream *st, - AVPacket * pkt, - uint32_t *timestamp, - const uint8_t * buf, - int len, int flags); - -struct RTPDynamicProtocolHandler_s { - // fields from AVRtpDynamicPayloadType_s - const char enc_name[50]; /* XXX: still why 50 ? ;-) */ +typedef int (*DynamicPayloadPacketHandlerProc)(AVFormatContext *ctx, + PayloadContext *s, + AVStream *st, AVPacket *pkt, + uint32_t *timestamp, + const uint8_t * buf, + int len, uint16_t seq, int flags); + +struct RTPDynamicProtocolHandler { + const char enc_name[50]; enum AVMediaType codec_type; - enum CodecID codec_id; - - // may be null - int (*parse_sdp_a_line) (AVFormatContext *s, - int st_index, - PayloadContext *priv_data, - const char *line); ///< Parse the a= line from the sdp field - PayloadContext *(*open) (void); ///< allocate any data needed by the rtp parsing for this dynamic data. - void (*close)(PayloadContext *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; + enum AVCodecID codec_id; + int static_payload_id; /* 0 means no payload id is set. 0 is a valid + * payload ID (PCMU), too, but that format doesn't + * require any custom depacketization code. */ + + /** Initialize dynamic protocol handler, called after the full rtpmap line is parsed, may be null */ + int (*init)(AVFormatContext *s, int st_index, PayloadContext *priv_data); + /** Parse the a= line from the sdp field */ + int (*parse_sdp_a_line)(AVFormatContext *s, int st_index, + PayloadContext *priv_data, const char *line); + /** Allocate any data needed by the rtp parsing for this dynamic data. */ + PayloadContext *(*alloc)(void); + /** Free any data needed by the rtp parsing for this dynamic data. */ + void (*free)(PayloadContext *protocol_data); + /** Parse handler for this dynamic packet */ + DynamicPayloadPacketHandlerProc parse_packet; + int (*need_keyframe)(PayloadContext *context); + + struct RTPDynamicProtocolHandler *next; }; -// moved out of rtp.c, because the h264 decoder needs to know about this structure.. +typedef struct RTPPacket { + uint16_t seq; + uint8_t *buf; + int len; + int64_t recvtime; + struct RTPPacket *next; +} RTPPacket; + struct RTPDemuxContext { AVFormatContext *ic; AVStream *st; @@ -138,41 +153,52 @@ struct RTPDemuxContext { uint32_t timestamp; uint32_t base_timestamp; uint32_t cur_timestamp; + int64_t unwrapped_timestamp; int64_t range_start_offset; 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) + int srtp_enabled; + struct SRTPContext srtp; + + /** Statistics for this stream (used by RTCP receiver reports) */ + RTPStatistics statistics; + + /** Fields for packet reordering @{ */ + int prev_ret; ///< The return value of the actual parsing of the previous packet + RTPPacket* queue; ///< A sorted queue of buffered packets not yet returned + int queue_len; ///< The number of packets in queue + int queue_size; ///< The size of queue, or 0 if reordering is disabled + /*@}*/ /* 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 + int64_t last_rtcp_ntp_time; + int64_t last_rtcp_reception_time; + int64_t first_rtcp_ntp_time; + uint32_t last_rtcp_timestamp; + int64_t rtcp_ts_offset; /* 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; + unsigned int packet_count; + unsigned int octet_count; + unsigned int last_octet_count; + int64_t last_feedback_time; /* dynamic payload stuff */ - DynamicPayloadPacketHandlerProc parse_packet; ///< This is also copied from the dynamic protocol handler structure - PayloadContext *dynamic_protocol_context; ///< This is a copy from the values setup from the sdp parsing, in rtsp.c don't free me. - int max_frames_per_packet; + const RTPDynamicProtocolHandler *handler; + PayloadContext *dynamic_protocol_context; }; -extern RTPDynamicProtocolHandler *RTPFirstDynamicPayloadHandler; void ff_register_dynamic_payload_handler(RTPDynamicProtocolHandler *handler); +RTPDynamicProtocolHandler *ff_rtp_handler_find_by_name(const char *name, + enum AVMediaType codec_type); +RTPDynamicProtocolHandler *ff_rtp_handler_find_by_id(int id, + enum AVMediaType codec_type); -int ff_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. +/* from rtsp.c, but used by rtp dynamic protocol handlers. */ +int ff_rtsp_next_attr_and_value(const char **p, char *attr, int attr_size, + char *value, int value_size); int ff_parse_fmtp(AVStream *stream, PayloadContext *data, const char *p, int (*parse_fmtp)(AVStream *stream, @@ -181,4 +207,9 @@ int ff_parse_fmtp(AVStream *stream, PayloadContext *data, const char *p, void av_register_rtp_dynamic_payload_handlers(void); +/** + * Close the dynamic buffer and make a packet from it. + */ +int ff_rtp_finalize_packet(AVPacket *pkt, AVIOContext **dyn_buf, int stream_idx); + #endif /* AVFORMAT_RTPDEC_H */