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avformat/demux: Add new demux.h header

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And move those stuff already in demuxer-only files to it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2022-05-06 18:28:08 +02:00
parent 20ca491664
commit 35ec5c819b
33 changed files with 175 additions and 130 deletions
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114
libavformat/internal.h
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@@ -460,21 +460,6 @@ do {\
} while(0)
#endif
#define RELATIVE_TS_BASE (INT64_MAX - (1LL << 48))
static av_always_inline int is_relative(int64_t ts)
{
return ts > (RELATIVE_TS_BASE - (1LL << 48));
}
/**
* Wrap a given time stamp, if there is an indication for an overflow
*
* @param st stream
* @param timestamp the time stamp to wrap
* @return resulting time stamp
*/
int64_t ff_wrap_timestamp(const AVStream *st, int64_t timestamp);
void ff_flush_packet_queue(AVFormatContext *s);
@@ -509,8 +494,6 @@ char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
*/
int ff_hex_to_data(uint8_t *data, const char *p);
void ff_read_frame_flush(AVFormatContext *s);
#define NTP_OFFSET 2208988800ULL
#define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)
@@ -611,22 +594,6 @@ void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
*/
int ff_find_stream_index(const AVFormatContext *s, int id);
/**
* Internal version of av_index_search_timestamp
*/
int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
int64_t wanted_timestamp, int flags);
/**
* Internal version of av_add_index_entry
*/
int ff_add_index_entry(AVIndexEntry **index_entries,
int *nb_index_entries,
unsigned int *index_entries_allocated_size,
int64_t pos, int64_t timestamp, int size, int distance, int flags);
void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance);
/**
* Add a new chapter.
*
@@ -641,52 +608,10 @@ void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance);
AVChapter *avpriv_new_chapter(AVFormatContext *s, int64_t id, AVRational time_base,
int64_t start, int64_t end, const char *title);
/**
* Ensure the index uses less memory than the maximum specified in
* AVFormatContext.max_index_size by discarding entries if it grows
* too large.
*/
void ff_reduce_index(AVFormatContext *s, int stream_index);
enum AVCodecID ff_guess_image2_codec(const char *filename);
const AVCodec *ff_find_decoder(AVFormatContext *s, const AVStream *st,
enum AVCodecID codec_id);
/**
* Perform a binary search using av_index_search_timestamp() and
* AVInputFormat.read_timestamp().
*
* @param target_ts target timestamp in the time base of the given stream
* @param stream_index stream number
*/
int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
int64_t target_ts, int flags);
/**
* Update cur_dts of all streams based on the given timestamp and AVStream.
*
* Stream ref_st unchanged, others set cur_dts in their native time base.
* Only needed for timestamp wrapping or if (dts not set and pts!=dts).
* @param timestamp new dts expressed in time_base of param ref_st
* @param ref_st reference stream giving time_base of param timestamp
*/
void avpriv_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp);
int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
/**
* Perform a binary search using read_timestamp().
*
* @param target_ts target timestamp in the time base of the given stream
* @param stream_index stream number
*/
int64_t ff_gen_search(AVFormatContext *s, int stream_index,
int64_t target_ts, int64_t pos_min,
int64_t pos_max, int64_t pos_limit,
int64_t ts_min, int64_t ts_max,
int flags, int64_t *ts_ret,
int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
/**
* Set the time base and wrapping info for a given stream. This will be used
@@ -717,15 +642,6 @@ int ff_add_param_change(AVPacket *pkt, int32_t channels,
*/
int ff_framehash_write_header(AVFormatContext *s);
/**
* Read a transport packet from a media file.
*
* @param s media file handle
* @param pkt is filled
* @return 0 if OK, AVERROR_xxx on error
*/
int ff_read_packet(AVFormatContext *s, AVPacket *pkt);
/**
* Add an attached pic to an AVStream.
*
@@ -819,16 +735,6 @@ int ff_alloc_extradata(AVCodecParameters *par, int size);
*/
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size);
/**
* add frame for rfps calculation.
*
* @param dts timestamp of the i-th frame
* @return 0 if OK, AVERROR_xxx on error
*/
int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t dts);
void ff_rfps_calculate(AVFormatContext *ic);
/**
* Copies the whilelists from one context to the other
*/
@@ -880,24 +786,4 @@ void ff_format_set_url(AVFormatContext *s, char *url);
void avpriv_register_devices(const AVOutputFormat * const o[], const AVInputFormat * const i[]);
/**
* Rescales a timestamp and the endpoints of an interval to which the temstamp
* belongs, from a timebase `tb_in` to a timebase `tb_out`.
*
* The upper (lower) bound of the output interval is rounded up (down) such that
* the output interval always falls within the intput interval. The timestamp is
* rounded to the nearest integer and halfway cases away from zero, and can
* therefore fall outside of the output interval.
*
* Useful to simplify the rescaling of the arguments of AVInputFormat::read_seek2()
*
* @param[in] tb_in Timebase of the input `min_ts`, `ts` and `max_ts`
* @param[in] tb_out Timebase of the ouput `min_ts`, `ts` and `max_ts`
* @param[in,out] min_ts Lower bound of the interval
* @param[in,out] ts Timestamp
* @param[in,out] max_ts Upper bound of the interval
*/
void ff_rescale_interval(AVRational tb_in, AVRational tb_out,
int64_t *min_ts, int64_t *ts, int64_t *max_ts);
#endif /* AVFORMAT_INTERNAL_H */