| /* |
| * "Real" compatible muxer and demuxer. |
| * Copyright (c) 2000, 2001 Fabrice Bellard |
| * |
| * 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 |
| */ |
| |
| #ifndef AVFORMAT_RM_H |
| #define AVFORMAT_RM_H |
| |
| #include "avformat.h" |
| #include "internal.h" |
| |
| extern const char * const ff_rm_metadata[4]; |
| extern const AVCodecTag ff_rm_codec_tags[]; |
| |
| typedef struct RMStream RMStream; |
| |
| RMStream *ff_rm_alloc_rmstream (void); |
| void ff_rm_free_rmstream (RMStream *rms); |
| |
| /*< input format for Realmedia-style RTSP streams */ |
| extern AVInputFormat ff_rdt_demuxer; |
| |
| /** |
| * Read the MDPR chunk, which contains stream-specific codec initialization |
| * parameters. |
| * |
| * @param s context containing RMContext and AVIOContext for stream reading |
| * @param pb context to read the data from |
| * @param st the stream that the MDPR chunk belongs to and where to store the |
| * parameters read from the chunk into |
| * @param rst real-specific stream information |
| * @param codec_data_size size of the MDPR chunk |
| * @return 0 on success, errno codes on error |
| */ |
| int ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb, |
| AVStream *st, RMStream *rst, |
| unsigned int codec_data_size, const uint8_t *mime); |
| |
| /** |
| * Parse one rm-stream packet from the input bytestream. |
| * |
| * @param s context containing RMContext and AVIOContext for stream reading |
| * @param pb context to read the data from |
| * @param st stream to which the packet to be read belongs |
| * @param rst Real-specific stream information |
| * @param len packet length to read from the input |
| * @param pkt packet location to store the parsed packet data |
| * @param seq pointer to an integer containing the sequence number, may be |
| * updated |
| * @param flags the packet flags |
| * @param ts timestamp of the current packet |
| * @return <0 on error, 0 if a packet was placed in the pkt pointer. A |
| * value >0 means that no data was placed in pkt, but that cached |
| * data is available by calling ff_rm_retrieve_cache(). |
| */ |
| int ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb, |
| AVStream *st, RMStream *rst, int len, |
| AVPacket *pkt, int *seq, int flags, int64_t ts); |
| |
| /** |
| * Retrieve one cached packet from the rm-context. The real container can |
| * store several packets (as interpreted by the codec) in a single container |
| * packet, which means the demuxer holds some back when the first container |
| * packet is parsed and returned. The result is that rm->audio_pkt_cnt is |
| * a positive number, the amount of cached packets. Using this function, each |
| * of those packets can be retrieved sequentially. |
| * |
| * @param s context containing RMContext and AVIOContext for stream reading |
| * @param pb context to read the data from |
| * @param st stream that this packet belongs to |
| * @param rst Real-specific stream information |
| * @param pkt location to store the packet data |
| * @return the number of samples left for subsequent calls to this same |
| * function, or 0 if all samples have been retrieved. |
| */ |
| int ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb, |
| AVStream *st, RMStream *rst, AVPacket *pkt); |
| |
| #endif /* AVFORMAT_RM_H */ |