2 * "Real" compatible muxer and demuxer.
3 * Copyright (c) 2000, 2001 Fabrice Bellard.
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 typedef struct RMStream RMStream;
29 RMStream *ff_rm_alloc_rmstream (void);
30 void ff_rm_free_rmstream (RMStream *rms);
32 /*< input format for Realmedia-style RTSP streams */
33 extern AVInputFormat rdt_demuxer;
36 * Read the MDPR chunk, which contains stream-specific codec initialization
39 * @param s context containing RMContext and ByteIOContext for stream reading
40 * @param pb context to read the data from
41 * @param st the stream that the MDPR chunk belongs to and where to store the
42 * parameters read from the chunk into
43 * @param codec_data_size size of the MDPR chunk
44 * @return 0 on success, errno codes on error
46 int ff_rm_read_mdpr_codecdata (AVFormatContext *s, ByteIOContext *pb,
47 AVStream *st, int codec_data_size);
50 * Parse one rm-stream packet from the input bytestream.
52 * @param s context containing RMContext and ByteIOContext for stream reading
53 * @param pb context to read the data from
54 * @param st stream to which the packet to be read belongs
55 * @param len packet length to read from the input
56 * @param pkt packet location to store the parsed packet data
57 * @param seq pointer to an integer containing the sequence number, may be
59 * @param flags pointer to an integer containing the packet flags, may be
61 * @param ts pointer to timestamp, may be updated
62 * @return >=0 on success (where >0 indicates there are cached samples that
63 * can be retrieved with subsequent calls to ff_rm_retrieve_cache()),
64 * errno codes on error
66 int ff_rm_parse_packet (AVFormatContext *s, ByteIOContext *pb,
67 AVStream *st, int len,
68 AVPacket *pkt, int *seq, int *flags, int64_t *ts);
71 * Retrieve one cached packet from the rm-context. The real container can
72 * store several packets (as interpreted by the codec) in a single container
73 * packet, which means the demuxer holds some back when the first container
74 * packet is parsed and returned. The result is that rm->audio_pkt_cnt is
75 * a positive number, the amount of cached packets. Using this function, each
76 * of those packets can be retrieved sequentially.
78 * @param s context containing RMContext and ByteIOContext for stream reading
79 * @param pb context to read the data from
80 * @param st stream that this packet belongs to
81 * @param pkt location to store the packet data
83 void ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
84 AVStream *st, AVPacket *pkt);
86 #endif /* AVFORMAT_RM_H */