/*
* "Real" compatible muxer and demuxer.
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
*
- * 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
*/
#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 {
- int nb_packets;
- int packet_total_size;
- int packet_max_size;
- /* codec related output */
- int bit_rate;
- float frame_rate;
- int nb_frames; /* current frame number */
- int total_frames; /* total number of frames */
- int num;
- AVCodecContext *enc;
-} StreamInfo;
+typedef struct RMStream RMStream;
-typedef struct {
- StreamInfo streams[2];
- StreamInfo *audio_stream, *video_stream;
- int data_pos; /* position of the data after the header */
- int nb_packets;
- int old_format;
- int current_stream;
- int remaining_len;
- uint8_t *videobuf; ///< place to store merged video frame
- int videobufsize; ///< current assembled frame size
- int videobufpos; ///< position for the next slice in the video buffer
- int curpic_num; ///< picture number of current frame
- int cur_slice, slices;
- int64_t pktpos; ///< first slice position in file
- /// Audio descrambling matrix parameters
- uint8_t *audiobuf; ///< place to store reordered audio data
- int64_t audiotimestamp; ///< Audio packet timestamp
- int sub_packet_cnt; // Subpacket counter, used while reading
- int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
- int audio_stream_num; ///< Stream number for audio packets
- int audio_pkt_cnt; ///< Output packet counter
- int audio_framesize; /// Audio frame size from container
- int sub_packet_lengths[16]; /// Length of each aac subpacket
-} RMContext;
+RMStream *ff_rm_alloc_rmstream (void);
+void ff_rm_free_rmstream (RMStream *rms);
/*< input format for Realmedia-style RTSP streams */
-extern AVInputFormat rdt_demuxer;
+extern AVInputFormat ff_rdt_demuxer;
/**
* Read the MDPR chunk, which contains stream-specific codec initialization
* parameters.
*
- * @param s context containing RMContext and ByteIOContext for stream reading
+ * @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, AVStream *st, int codec_data_size);
+int ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
+ AVStream *st, RMStream *rst,
+ unsigned int codec_data_size);
/**
* Parse one rm-stream packet from the input bytestream.
*
- * @param s context containing RMContext and ByteIOContext for stream reading
+ * @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 pointer to an integer containing the packet flags, may be
- updated
- * @param ts pointer to timestamp, may be updated
- * @return 0 on success, errno codes on error
+ * @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, AVStream *st, int len,
- AVPacket *pkt, int *seq, int *flags, int64_t *ts);
+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
* 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 ByteIOContext for stream reading
+ * @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.
*/
-void ff_rm_retrieve_cache (AVFormatContext *s, AVStream *st, AVPacket *pkt);
+int ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb,
+ AVStream *st, RMStream *rst, AVPacket *pkt);
#endif /* AVFORMAT_RM_H */
projects / ffmpeg / blobdiff