VC1: don't use vc1_put_block() in vc1_decode_i_blocks_adv().
[libav.git] / libavformat / rm.h
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1/*
2 * "Real" compatible muxer and demuxer.
406792e7 3 * Copyright (c) 2000, 2001 Fabrice Bellard
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4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
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22#ifndef AVFORMAT_RM_H
23#define AVFORMAT_RM_H
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24
25#include "avformat.h"
74e8ccad 26#include "internal.h"
7b2a2ce5 27
88e70e1b 28extern const char * const ff_rm_metadata[4];
adae9fa6 29extern const unsigned char ff_sipr_subpk_size[4];
74e8ccad 30extern const AVCodecTag ff_rm_codec_tags[];
7379d5bc 31
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32typedef struct RMStream RMStream;
33
34RMStream *ff_rm_alloc_rmstream (void);
35void ff_rm_free_rmstream (RMStream *rms);
36
ff13ba92 37/*< input format for Realmedia-style RTSP streams */
c6610a21 38extern AVInputFormat ff_rdt_demuxer;
ff13ba92 39
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40/**
41 * Read the MDPR chunk, which contains stream-specific codec initialization
42 * parameters.
43 *
44 * @param s context containing RMContext and ByteIOContext for stream reading
fcc995a5 45 * @param pb context to read the data from
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46 * @param st the stream that the MDPR chunk belongs to and where to store the
47 * parameters read from the chunk into
886e89d0 48 * @param rst real-specific stream information
79d5045d 49 * @param codec_data_size size of the MDPR chunk
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50 * @return 0 on success, errno codes on error
51 */
fcc995a5 52int ff_rm_read_mdpr_codecdata (AVFormatContext *s, ByteIOContext *pb,
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53 AVStream *st, RMStream *rst,
54 int codec_data_size);
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55
56/**
57 * Parse one rm-stream packet from the input bytestream.
58 *
59 * @param s context containing RMContext and ByteIOContext for stream reading
fcc995a5 60 * @param pb context to read the data from
0fd36362 61 * @param st stream to which the packet to be read belongs
886e89d0 62 * @param rst Real-specific stream information
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63 * @param len packet length to read from the input
64 * @param pkt packet location to store the parsed packet data
65 * @param seq pointer to an integer containing the sequence number, may be
66 * updated
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67 * @param flags the packet flags
68 * @param ts timestamp of the current packet
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69 * @return <0 on error, 0 if a packet was placed in the pkt pointer. A
70 * value >0 means that no data was placed in pkt, but that cached
c5efef7b 71 * data is available by calling ff_rm_retrieve_cache().
0fd36362 72 */
fcc995a5 73int ff_rm_parse_packet (AVFormatContext *s, ByteIOContext *pb,
886e89d0 74 AVStream *st, RMStream *rst, int len,
34bddc39 75 AVPacket *pkt, int *seq, int flags, int64_t ts);
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76
77/**
78 * Retrieve one cached packet from the rm-context. The real container can
79 * store several packets (as interpreted by the codec) in a single container
80 * packet, which means the demuxer holds some back when the first container
81 * packet is parsed and returned. The result is that rm->audio_pkt_cnt is
82 * a positive number, the amount of cached packets. Using this function, each
83 * of those packets can be retrieved sequentially.
84 *
85 * @param s context containing RMContext and ByteIOContext for stream reading
fcc995a5 86 * @param pb context to read the data from
0fd36362 87 * @param st stream that this packet belongs to
886e89d0 88 * @param rst Real-specific stream information
0fd36362 89 * @param pkt location to store the packet data
32e543f8 90 * @return the number of samples left for subsequent calls to this same
a9f84821 91 * function, or 0 if all samples have been retrieved.
0fd36362 92 */
a9f84821 93int ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
ade8fb4d 94 AVStream *st, RMStream *rst, AVPacket *pkt);
0fd36362 95
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96/**
97 * Perform 4-bit block reordering for SIPR data.
98 *
99 * @param buf SIPR data
100 */
101void ff_rm_reorder_sipr_data(uint8_t *buf, int sub_packet_h, int framesize);
102
98790382 103#endif /* AVFORMAT_RM_H */