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- /*
- * copyright (c) 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_INTERNAL_H
- #define AVFORMAT_INTERNAL_H
- #include <stdint.h>
- #include "avformat.h"
- #define MAX_URL_SIZE 4096
- #ifdef DEBUG
- # define hex_dump_debug(class, buf, size) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size)
- #else
- # define hex_dump_debug(class, buf, size)
- #endif
- typedef struct AVCodecTag {
- enum CodecID id;
- unsigned int tag;
- } AVCodecTag;
- #ifdef __GNUC__
- #define dynarray_add(tab, nb_ptr, elem)\
- do {\
- __typeof__(tab) _tab = (tab);\
- __typeof__(elem) _elem = (elem);\
- (void)sizeof(**_tab == _elem); /* check that types are compatible */\
- av_dynarray_add(_tab, nb_ptr, _elem);\
- } while(0)
- #else
- #define dynarray_add(tab, nb_ptr, elem)\
- do {\
- av_dynarray_add((tab), nb_ptr, (elem));\
- } while(0)
- #endif
- struct tm *brktimegm(time_t secs, struct tm *tm);
- char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
- /**
- * Parse a string of hexadecimal strings. Any space between the hexadecimal
- * digits is ignored.
- *
- * @param data if non-null, the parsed data is written to this pointer
- * @param p the string to parse
- * @return the number of bytes written (or to be written, if data is null)
- */
- int ff_hex_to_data(uint8_t *data, const char *p);
- void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx);
- /**
- * Add packet to AVFormatContext->packet_buffer list, determining its
- * interleaved position using compare() function argument.
- */
- void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
- int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
- void ff_read_frame_flush(AVFormatContext *s);
- #define NTP_OFFSET 2208988800ULL
- #define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)
- /** Get the current time since NTP epoch in microseconds. */
- uint64_t ff_ntp_time(void);
- #if FF_API_URL_SPLIT
- /**
- * @deprecated use av_url_split() instead
- */
- void ff_url_split(char *proto, int proto_size,
- char *authorization, int authorization_size,
- char *hostname, int hostname_size,
- int *port_ptr,
- char *path, int path_size,
- const char *url);
- #endif
- /**
- * Assemble a URL string from components. This is the reverse operation
- * of av_url_split.
- *
- * Note, this requires networking to be initialized, so the caller must
- * ensure ff_network_init has been called.
- *
- * @see av_url_split
- *
- * @param str the buffer to fill with the url
- * @param size the size of the str buffer
- * @param proto the protocol identifier, if null, the separator
- * after the identifier is left out, too
- * @param authorization an optional authorization string, may be null.
- * An empty string is treated the same as a null string.
- * @param hostname the host name string
- * @param port the port number, left out from the string if negative
- * @param fmt a generic format string for everything to add after the
- * host/port, may be null
- * @return the number of characters written to the destination buffer
- */
- int ff_url_join(char *str, int size, const char *proto,
- const char *authorization, const char *hostname,
- int port, const char *fmt, ...) av_printf_format(7, 8);
- /**
- * Append the media-specific SDP fragment for the media stream c
- * to the buffer buff.
- *
- * Note, the buffer needs to be initialized, since it is appended to
- * existing content.
- *
- * @param buff the buffer to append the SDP fragment to
- * @param size the size of the buff buffer
- * @param c the AVCodecContext of the media to describe
- * @param dest_addr the destination address of the media stream, may be NULL
- * @param dest_type the destination address type, may be NULL
- * @param port the destination port of the media stream, 0 if unknown
- * @param ttl the time to live of the stream, 0 if not multicast
- * @param fmt the AVFormatContext, which might contain options modifying
- * the generated SDP
- */
- void ff_sdp_write_media(char *buff, int size, AVCodecContext *c,
- const char *dest_addr, const char *dest_type,
- int port, int ttl, AVFormatContext *fmt);
- /**
- * Write a packet to another muxer than the one the user originally
- * intended. Useful when chaining muxers, where one muxer internally
- * writes a received packet to another muxer.
- *
- * @param dst the muxer to write the packet to
- * @param dst_stream the stream index within dst to write the packet to
- * @param pkt the packet to be written
- * @param src the muxer the packet originally was intended for
- * @return the value av_write_frame returned
- */
- int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
- AVFormatContext *src);
- /**
- * Get the length in bytes which is needed to store val as v.
- */
- int ff_get_v_length(uint64_t val);
- /**
- * Put val using a variable number of bytes.
- */
- void ff_put_v(AVIOContext *bc, uint64_t val);
- /**
- * Read a whole line of text from AVIOContext. Stop reading after reaching
- * either a \\n, a \\0 or EOF. The returned string is always \\0-terminated,
- * and may be truncated if the buffer is too small.
- *
- * @param s the read-only AVIOContext
- * @param buf buffer to store the read line
- * @param maxlen size of the buffer
- * @return the length of the string written in the buffer, not including the
- * final \\0
- */
- int ff_get_line(AVIOContext *s, char *buf, int maxlen);
- #define SPACE_CHARS " \t\r\n"
- /**
- * Callback function type for ff_parse_key_value.
- *
- * @param key a pointer to the key
- * @param key_len the number of bytes that belong to the key, including the '='
- * char
- * @param dest return the destination pointer for the value in *dest, may
- * be null to ignore the value
- * @param dest_len the length of the *dest buffer
- */
- typedef void (*ff_parse_key_val_cb)(void *context, const char *key,
- int key_len, char **dest, int *dest_len);
- /**
- * Parse a string with comma-separated key=value pairs. The value strings
- * may be quoted and may contain escaped characters within quoted strings.
- *
- * @param str the string to parse
- * @param callback_get_buf function that returns where to store the
- * unescaped value string.
- * @param context the opaque context pointer to pass to callback_get_buf
- */
- void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
- void *context);
- /**
- * Find stream index based on format-specific stream ID
- * @return stream index, or < 0 on error
- */
- int ff_find_stream_index(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);
- /**
- * Add a new chapter.
- *
- * @param s media file handle
- * @param id unique ID for this chapter
- * @param start chapter start time in time_base units
- * @param end chapter end time in time_base units
- * @param title chapter title
- *
- * @return AVChapter or NULL on error
- */
- AVChapter *ff_new_chapter(AVFormatContext *s, int 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);
- /*
- * Convert a relative url into an absolute url, given a base url.
- *
- * @param buf the buffer where output absolute url is written
- * @param size the size of buf
- * @param base the base url, may be equal to buf.
- * @param rel the new url, which is interpreted relative to base
- */
- void ff_make_absolute_url(char *buf, int size, const char *base,
- const char *rel);
- enum CodecID ff_guess_image2_codec(const char *filename);
- /**
- * Convert a date string in ISO8601 format to Unix timestamp.
- */
- int64_t ff_iso8601_to_unix_time(const char *datestr);
- #endif /* AVFORMAT_INTERNAL_H */
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