/*
* "Real" compatible muxer and demuxer.
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
#define AVFORMAT_RM_H
#include "avformat.h"
+#include "internal.h"
+
+extern const char * const ff_rm_metadata[4];
+extern const unsigned char ff_sipr_subpk_size[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 rdt_demuxer;
* @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, ByteIOContext *pb,
- AVStream *st, int codec_data_size);
+ AVStream *st, RMStream *rst,
+ int codec_data_size);
/**
* Parse one rm-stream packet from the input bytestream.
* @param s context containing RMContext and ByteIOContext 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 (where >0 indicates there are cached samples that
- * can be retrieved with subsequent calls to ff_rm_retrieve_cache()),
- * 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, ByteIOContext *pb,
- AVStream *st, int len,
- AVPacket *pkt, int *seq, int *flags, int64_t *ts);
+ 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
* @param s context containing RMContext and ByteIOContext 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, ByteIOContext *pb,
+ AVStream *st, RMStream *rst, AVPacket *pkt);
+
+/**
+ * Perform 4-bit block reordering for SIPR data.
+ *
+ * @param buf SIPR data
*/
-void ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
- AVStream *st, AVPacket *pkt);
+void ff_rm_reorder_sipr_data(uint8_t *buf, int sub_packet_h, int framesize);
#endif /* AVFORMAT_RM_H */