mirror of
https://github.com/FFmpeg/FFmpeg.git
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141 lines
5.3 KiB
C
141 lines
5.3 KiB
C
/*
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* copyright (c) 2001 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_INTERNAL_H
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#define AVFORMAT_INTERNAL_H
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#include <stdint.h>
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#include "avformat.h"
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void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem);
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#ifdef __GNUC__
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#define dynarray_add(tab, nb_ptr, elem)\
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do {\
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__typeof__(tab) _tab = (tab);\
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__typeof__(elem) _elem = (elem);\
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(void)sizeof(**_tab == _elem); /* check that types are compatible */\
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ff_dynarray_add((intptr_t **)_tab, nb_ptr, (intptr_t)_elem);\
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} while(0)
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#else
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#define dynarray_add(tab, nb_ptr, elem)\
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do {\
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ff_dynarray_add((intptr_t **)(tab), nb_ptr, (intptr_t)(elem));\
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} while(0)
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#endif
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time_t mktimegm(struct tm *tm);
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struct tm *brktimegm(time_t secs, struct tm *tm);
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const char *small_strptime(const char *p, const char *fmt,
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struct tm *dt);
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char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
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void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx);
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/**
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* Add packet to AVFormatContext->packet_buffer list, determining its
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* interleaved position using compare() function argument.
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*/
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void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
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int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
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void ff_read_frame_flush(AVFormatContext *s);
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#define NTP_OFFSET 2208988800ULL
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#define NTP_OFFSET_US (NTP_OFFSET * 1000000ULL)
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/** Gets the current time since NTP epoch in microseconds. */
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uint64_t ff_ntp_time(void);
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/**
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* Probes a bytestream to determine the input format. Each time a probe returns
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* with a score that is too low, the probe buffer size is increased and another
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* attempt is made. When the maximum probe size is reached, the input format
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* with the highest score is returned.
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*
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* @param pb the bytestream to probe, it may be closed and opened again
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* @param fmt the input format is put here
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* @param filename the filename of the stream
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* @param logctx the log context
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* @param offset the offset within the bytestream to probe from
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* @param max_probe_size the maximum probe buffer size (zero for default)
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* @return 0 in case of success, a negative value corresponding to an
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* AVERROR code otherwise
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*/
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int ff_probe_input_buffer(ByteIOContext **pb, AVInputFormat **fmt,
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const char *filename, void *logctx,
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unsigned int offset, unsigned int max_probe_size);
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/**
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* Splits a URL string into components. To reassemble components back into
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* a URL, use ff_url_join instead of using snprintf directly.
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*
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* The pointers to buffers for storing individual components may be null,
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* in order to ignore that component. Buffers for components not found are
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* set to empty strings. If the port isn't found, it is set to a negative
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* value.
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*
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* @see ff_url_join
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*
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* @param proto the buffer for the protocol
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* @param proto_size the size of the proto buffer
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* @param authorization the buffer for the authorization
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* @param authorization_size the size of the authorization buffer
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* @param hostname the buffer for the host name
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* @param hostname_size the size of the hostname buffer
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* @param port_ptr a pointer to store the port number in
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* @param path the buffer for the path
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* @param path_size the size of the path buffer
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* @param url the URL to split
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*/
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void ff_url_split(char *proto, int proto_size,
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char *authorization, int authorization_size,
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char *hostname, int hostname_size,
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int *port_ptr,
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char *path, int path_size,
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const char *url);
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/**
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* Assembles a URL string from components. This is the reverse operation
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* of ff_url_split.
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*
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* Note, this requires networking to be initialized, so the caller must
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* ensure ff_network_init has been called.
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*
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* @see ff_url_split
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*
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* @param str the buffer to fill with the url
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* @param size the size of the str buffer
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* @param proto the protocol identifier, if null, the separator
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* after the identifier is left out, too
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* @param authorization an optional authorization string, may be null
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* @param hostname the host name string
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* @param port the port number, left out from the string if negative
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* @param fmt a generic format string for everything to add after the
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* host/port, may be null
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* @return the number of characters written to the destination buffer
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*/
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int ff_url_join(char *str, int size, const char *proto,
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const char *authorization, const char *hostname,
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int port, const char *fmt, ...);
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#endif /* AVFORMAT_INTERNAL_H */
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