2008-08-27 23:43:28 +00:00
|
|
|
/*
|
|
|
|
* 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
|
|
|
|
*/
|
|
|
|
|
2008-08-31 07:39:47 +00:00
|
|
|
#ifndef AVFORMAT_INTERNAL_H
|
|
|
|
#define AVFORMAT_INTERNAL_H
|
2008-08-27 23:43:28 +00:00
|
|
|
|
2008-10-04 11:20:02 +00:00
|
|
|
#include <stdint.h>
|
2008-12-03 16:47:07 +00:00
|
|
|
#include "avformat.h"
|
2008-10-04 11:20:02 +00:00
|
|
|
|
2010-08-19 14:50:40 +00:00
|
|
|
#define MAX_URL_SIZE 4096
|
|
|
|
|
2010-05-22 16:01:32 +00:00
|
|
|
typedef struct AVCodecTag {
|
|
|
|
enum CodecID id;
|
|
|
|
unsigned int tag;
|
|
|
|
} AVCodecTag;
|
|
|
|
|
2010-04-11 21:44:23 +00:00
|
|
|
void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem);
|
|
|
|
|
|
|
|
#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 */\
|
|
|
|
ff_dynarray_add((intptr_t **)_tab, nb_ptr, (intptr_t)_elem);\
|
|
|
|
} while(0)
|
|
|
|
#else
|
|
|
|
#define dynarray_add(tab, nb_ptr, elem)\
|
|
|
|
do {\
|
|
|
|
ff_dynarray_add((intptr_t **)(tab), nb_ptr, (intptr_t)(elem));\
|
|
|
|
} while(0)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
struct tm *brktimegm(time_t secs, struct tm *tm);
|
|
|
|
|
2010-03-25 07:13:20 +00:00
|
|
|
char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
|
2008-08-27 23:43:28 +00:00
|
|
|
|
2010-08-09 10:05:33 +00:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
2010-03-15 23:14:07 +00:00
|
|
|
void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx);
|
2008-12-03 16:47:07 +00:00
|
|
|
|
2009-02-08 21:14:46 +00:00
|
|
|
/**
|
|
|
|
* 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 *));
|
|
|
|
|
2010-03-15 23:15:24 +00:00
|
|
|
void ff_read_frame_flush(AVFormatContext *s);
|
2010-03-06 23:19:05 +00:00
|
|
|
|
2010-03-15 10:36:30 +00:00
|
|
|
#define NTP_OFFSET 2208988800ULL
|
|
|
|
#define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)
|
|
|
|
|
2010-06-30 15:38:06 +00:00
|
|
|
/** Get the current time since NTP epoch in microseconds. */
|
2010-03-10 22:21:39 +00:00
|
|
|
uint64_t ff_ntp_time(void);
|
|
|
|
|
2010-10-15 12:54:12 +00:00
|
|
|
#if FF_API_URL_SPLIT
|
2010-03-14 23:59:48 +00:00
|
|
|
/**
|
2010-06-27 14:16:46 +00:00
|
|
|
* @deprecated use av_url_split() instead
|
2010-03-14 23:59:48 +00:00
|
|
|
*/
|
|
|
|
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);
|
2010-06-27 14:16:46 +00:00
|
|
|
#endif
|
2010-03-14 23:59:48 +00:00
|
|
|
|
|
|
|
/**
|
2010-06-30 15:38:06 +00:00
|
|
|
* Assemble a URL string from components. This is the reverse operation
|
2010-06-27 14:16:46 +00:00
|
|
|
* of av_url_split.
|
2010-03-14 23:59:48 +00:00
|
|
|
*
|
|
|
|
* Note, this requires networking to be initialized, so the caller must
|
|
|
|
* ensure ff_network_init has been called.
|
|
|
|
*
|
2010-06-27 14:16:46 +00:00
|
|
|
* @see av_url_split
|
2010-03-14 23:59:48 +00:00
|
|
|
*
|
|
|
|
* @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
|
2010-06-19 21:56:50 +00:00
|
|
|
* @param authorization an optional authorization string, may be null.
|
|
|
|
* An empty string is treated the same as a null string.
|
2010-03-14 23:59:48 +00:00
|
|
|
* @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, ...);
|
|
|
|
|
2010-05-18 19:32:59 +00:00
|
|
|
/**
|
2010-06-30 15:38:06 +00:00
|
|
|
* Append the media-specific SDP fragment for the media stream c
|
2010-05-18 19:32:59 +00:00
|
|
|
* 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
|
2010-08-25 12:29:32 +00:00
|
|
|
* @param dest_type the destination address type, may be NULL
|
2010-05-18 19:32:59 +00:00
|
|
|
* @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
|
|
|
|
*/
|
|
|
|
void ff_sdp_write_media(char *buff, int size, AVCodecContext *c,
|
2010-08-25 12:29:32 +00:00
|
|
|
const char *dest_addr, const char *dest_type,
|
|
|
|
int port, int ttl);
|
2010-05-18 19:32:59 +00:00
|
|
|
|
2010-05-21 07:07:57 +00:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
2010-07-09 12:14:33 +00:00
|
|
|
/**
|
|
|
|
* 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.
|
|
|
|
*/
|
2011-02-20 10:04:12 +00:00
|
|
|
void ff_put_v(AVIOContext *bc, uint64_t val);
|
2010-07-09 12:14:33 +00:00
|
|
|
|
2010-07-21 21:40:50 +00:00
|
|
|
/**
|
2011-02-20 10:04:12 +00:00
|
|
|
* Read a whole line of text from AVIOContext. Stop reading after reaching
|
2010-07-21 21:40:50 +00:00
|
|
|
* either a \n, a \0 or EOF. The returned string is always \0 terminated,
|
|
|
|
* and may be truncated if the buffer is too small.
|
|
|
|
*
|
2011-02-20 10:04:12 +00:00
|
|
|
* @param s the read-only AVIOContext
|
2010-07-21 21:40:50 +00:00
|
|
|
* @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
|
|
|
|
*/
|
2011-02-20 10:04:12 +00:00
|
|
|
int ff_get_line(AVIOContext *s, char *buf, int maxlen);
|
2010-07-21 21:39:01 +00:00
|
|
|
|
2010-07-16 14:12:52 +00:00
|
|
|
#define SPACE_CHARS " \t\r\n"
|
|
|
|
|
2010-08-19 14:49:53 +00:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
2010-12-26 01:24:51 +00:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
2011-01-22 09:03:22 +00:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
2011-02-06 14:38:55 +00:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
|
2011-03-17 10:24:23 +00:00
|
|
|
/*
|
|
|
|
* 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);
|
|
|
|
|
2008-08-31 07:39:47 +00:00
|
|
|
#endif /* AVFORMAT_INTERNAL_H */
|