de9cd1b173
The handling of the environment variable no_proxy, present since
one of the initial commits (de6d9b6404), is inconsistent with
how many other applications and libraries interpret this
variable. Its bare presence does not indicate that the use of
proxies should be skipped, but it is some sort of pattern for
hosts that does not need using a proxy (e.g. for a local network).
As investigated by Rudolf Polzer, different libraries handle this
in different ways, some supporting IP address masks, some supporting
arbitrary globbing using *, some just checking that the pattern matches
the end of the hostname without regard for whether it actually is
the right domain or a domain that ends in the same string.
This simple logic should be pretty similar to the logic used by
lynx and curl.
Signed-off-by: Martin Storsjö <martin@martin.st>
381 lines
13 KiB
C
381 lines
13 KiB
C
/*
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* copyright (c) 2001 Fabrice Bellard
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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#define MAX_URL_SIZE 4096
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#ifdef DEBUG
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# define hex_dump_debug(class, buf, size) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size)
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#else
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# define hex_dump_debug(class, buf, size)
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#endif
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typedef struct AVCodecTag {
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enum AVCodecID id;
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unsigned int tag;
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} AVCodecTag;
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typedef struct CodecMime{
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char str[32];
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enum AVCodecID id;
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} CodecMime;
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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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struct tm *ff_brktimegm(time_t secs, struct tm *tm);
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char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
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/**
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* Parse a string of hexadecimal strings. Any space between the hexadecimal
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* digits is ignored.
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*
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* @param data if non-null, the parsed data is written to this pointer
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* @param p the string to parse
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* @return the number of bytes written (or to be written, if data is null)
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*/
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int ff_hex_to_data(uint8_t *data, const char *p);
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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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/** Get 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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* Assemble a URL string from components. This is the reverse operation
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* of av_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 av_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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* An empty string is treated the same as a null string.
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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, ...) av_printf_format(7, 8);
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/**
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* Append the media-specific SDP fragment for the media stream c
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* to the buffer buff.
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*
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* Note, the buffer needs to be initialized, since it is appended to
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* existing content.
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*
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* @param buff the buffer to append the SDP fragment to
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* @param size the size of the buff buffer
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* @param st the AVStream of the media to describe
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* @param idx the global stream index
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* @param dest_addr the destination address of the media stream, may be NULL
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* @param dest_type the destination address type, may be NULL
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* @param port the destination port of the media stream, 0 if unknown
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* @param ttl the time to live of the stream, 0 if not multicast
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* @param fmt the AVFormatContext, which might contain options modifying
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* the generated SDP
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*/
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void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
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const char *dest_addr, const char *dest_type,
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int port, int ttl, AVFormatContext *fmt);
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/**
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* Write a packet to another muxer than the one the user originally
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* intended. Useful when chaining muxers, where one muxer internally
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* writes a received packet to another muxer.
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*
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* @param dst the muxer to write the packet to
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* @param dst_stream the stream index within dst to write the packet to
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* @param pkt the packet to be written
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* @param src the muxer the packet originally was intended for
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* @return the value av_write_frame returned
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*/
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int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
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AVFormatContext *src);
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/**
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* Get the length in bytes which is needed to store val as v.
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*/
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int ff_get_v_length(uint64_t val);
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/**
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* Put val using a variable number of bytes.
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*/
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void ff_put_v(AVIOContext *bc, uint64_t val);
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/**
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* Read a whole line of text from AVIOContext. Stop reading after reaching
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* either a \\n, a \\0 or EOF. The returned string is always \\0-terminated,
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* and may be truncated if the buffer is too small.
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*
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* @param s the read-only AVIOContext
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* @param buf buffer to store the read line
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* @param maxlen size of the buffer
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* @return the length of the string written in the buffer, not including the
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* final \\0
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*/
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int ff_get_line(AVIOContext *s, char *buf, int maxlen);
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#define SPACE_CHARS " \t\r\n"
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/**
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* Callback function type for ff_parse_key_value.
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*
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* @param key a pointer to the key
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* @param key_len the number of bytes that belong to the key, including the '='
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* char
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* @param dest return the destination pointer for the value in *dest, may
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* be null to ignore the value
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* @param dest_len the length of the *dest buffer
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*/
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typedef void (*ff_parse_key_val_cb)(void *context, const char *key,
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int key_len, char **dest, int *dest_len);
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/**
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* Parse a string with comma-separated key=value pairs. The value strings
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* may be quoted and may contain escaped characters within quoted strings.
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*
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* @param str the string to parse
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* @param callback_get_buf function that returns where to store the
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* unescaped value string.
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* @param context the opaque context pointer to pass to callback_get_buf
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*/
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void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
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void *context);
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/**
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* Find stream index based on format-specific stream ID
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* @return stream index, or < 0 on error
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*/
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int ff_find_stream_index(AVFormatContext *s, int id);
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/**
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* Internal version of av_index_search_timestamp
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*/
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int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
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int64_t wanted_timestamp, int flags);
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/**
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* Internal version of av_add_index_entry
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*/
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int ff_add_index_entry(AVIndexEntry **index_entries,
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int *nb_index_entries,
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unsigned int *index_entries_allocated_size,
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int64_t pos, int64_t timestamp, int size, int distance, int flags);
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/**
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* Add a new chapter.
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*
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* @param s media file handle
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* @param id unique ID for this chapter
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* @param start chapter start time in time_base units
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* @param end chapter end time in time_base units
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* @param title chapter title
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*
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* @return AVChapter or NULL on error
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*/
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AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
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int64_t start, int64_t end, const char *title);
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/**
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* Ensure the index uses less memory than the maximum specified in
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* AVFormatContext.max_index_size by discarding entries if it grows
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* too large.
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*/
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void ff_reduce_index(AVFormatContext *s, int stream_index);
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/*
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* Convert a relative url into an absolute url, given a base url.
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*
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* @param buf the buffer where output absolute url is written
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* @param size the size of buf
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* @param base the base url, may be equal to buf.
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* @param rel the new url, which is interpreted relative to base
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*/
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void ff_make_absolute_url(char *buf, int size, const char *base,
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const char *rel);
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enum AVCodecID ff_guess_image2_codec(const char *filename);
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/**
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* Convert a date string in ISO8601 format to Unix timestamp.
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*/
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int64_t ff_iso8601_to_unix_time(const char *datestr);
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/**
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* Perform a binary search using av_index_search_timestamp() and
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* AVInputFormat.read_timestamp().
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*
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* @param target_ts target timestamp in the time base of the given stream
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* @param stream_index stream number
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*/
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int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
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int64_t target_ts, int flags);
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/**
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* Update cur_dts of all streams based on the given timestamp and AVStream.
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*
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* Stream ref_st unchanged, others set cur_dts in their native time base.
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* Only needed for timestamp wrapping or if (dts not set and pts!=dts).
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* @param timestamp new dts expressed in time_base of param ref_st
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* @param ref_st reference stream giving time_base of param timestamp
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*/
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void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp);
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/**
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* Perform a binary search using read_timestamp().
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*
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* @param target_ts target timestamp in the time base of the given stream
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* @param stream_index stream number
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*/
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int64_t ff_gen_search(AVFormatContext *s, int stream_index,
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int64_t target_ts, int64_t pos_min,
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int64_t pos_max, int64_t pos_limit,
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int64_t ts_min, int64_t ts_max,
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int flags, int64_t *ts_ret,
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int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
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/**
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* Set the time base and wrapping info for a given stream. This will be used
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* to interpret the stream's timestamps. If the new time base is invalid
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* (numerator or denominator are non-positive), it leaves the stream
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* unchanged.
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*
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* @param s stream
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* @param pts_wrap_bits number of bits effectively used by the pts
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* (used for wrap control)
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* @param pts_num time base numerator
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* @param pts_den time base denominator
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*/
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void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
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unsigned int pts_num, unsigned int pts_den);
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/**
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* Add side data to a packet for changing parameters to the given values.
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* Parameters set to 0 aren't included in the change.
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*/
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int ff_add_param_change(AVPacket *pkt, int32_t channels,
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uint64_t channel_layout, int32_t sample_rate,
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int32_t width, int32_t height);
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/**
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* Set the timebase for each stream from the corresponding codec timebase and
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* print it.
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*/
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int ff_framehash_write_header(AVFormatContext *s);
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/**
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* Read a transport packet from a media file.
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*
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* @param s media file handle
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* @param pkt is filled
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* @return 0 if OK, AVERROR_xxx on error
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*/
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int ff_read_packet(AVFormatContext *s, AVPacket *pkt);
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/**
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* Interleave a packet per dts in an output media file.
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*
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* Packets with pkt->destruct == av_destruct_packet will be freed inside this
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* function, so they cannot be used after it. Note that calling av_free_packet()
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* on them is still safe.
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*
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* @param s media file handle
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* @param out the interleaved packet will be output here
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* @param pkt the input packet
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* @param flush 1 if no further packets are available as input and all
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* remaining packets should be output
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* @return 1 if a packet was output, 0 if no packet could be output,
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* < 0 if an error occurred
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*/
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int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
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AVPacket *pkt, int flush);
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/**
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* Return the frame duration in seconds. Return 0 if not available.
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*/
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void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
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AVCodecParserContext *pc, AVPacket *pkt);
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int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux);
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unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id);
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enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag);
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/**
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* Select a PCM codec based on the given parameters.
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*
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* @param bps bits-per-sample
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* @param flt floating-point
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* @param be big-endian
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* @param sflags signed flags. each bit corresponds to one byte of bit depth.
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* e.g. the 1st bit indicates if 8-bit should be signed or
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* unsigned, the 2nd bit indicates if 16-bit should be signed or
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* unsigned, etc... This is useful for formats such as WAVE where
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* only 8-bit is unsigned and all other bit depths are signed.
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* @return a PCM codec id or AV_CODEC_ID_NONE
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*/
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enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags);
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int ff_http_match_no_proxy(const char *no_proxy, const char *hostname);
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#endif /* AVFORMAT_INTERNAL_H */
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