| /* |
| * 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" |
| |
| 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 |
| |
| time_t mktimegm(struct tm *tm); |
| struct tm *brktimegm(time_t secs, struct tm *tm); |
| const char *small_strptime(const char *p, const char *fmt, |
| struct tm *dt); |
| |
| char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase); |
| |
| 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) |
| |
| /** Gets the current time since NTP epoch in microseconds. */ |
| uint64_t ff_ntp_time(void); |
| |
| /** |
| * Probes a bytestream to determine the input format. Each time a probe returns |
| * with a score that is too low, the probe buffer size is increased and another |
| * attempt is made. When the maximum probe size is reached, the input format |
| * with the highest score is returned. |
| * |
| * @param pb the bytestream to probe, it may be closed and opened again |
| * @param fmt the input format is put here |
| * @param filename the filename of the stream |
| * @param logctx the log context |
| * @param offset the offset within the bytestream to probe from |
| * @param max_probe_size the maximum probe buffer size (zero for default) |
| * @return 0 in case of success, a negative value corresponding to an |
| * AVERROR code otherwise |
| */ |
| int ff_probe_input_buffer(ByteIOContext **pb, AVInputFormat **fmt, |
| const char *filename, void *logctx, |
| unsigned int offset, unsigned int max_probe_size); |
| |
| /** |
| * Splits a URL string into components. To reassemble components back into |
| * a URL, use ff_url_join instead of using snprintf directly. |
| * |
| * The pointers to buffers for storing individual components may be null, |
| * in order to ignore that component. Buffers for components not found are |
| * set to empty strings. If the port isn't found, it is set to a negative |
| * value. |
| * |
| * @see ff_url_join |
| * |
| * @param proto the buffer for the protocol |
| * @param proto_size the size of the proto buffer |
| * @param authorization the buffer for the authorization |
| * @param authorization_size the size of the authorization buffer |
| * @param hostname the buffer for the host name |
| * @param hostname_size the size of the hostname buffer |
| * @param port_ptr a pointer to store the port number in |
| * @param path the buffer for the path |
| * @param path_size the size of the path buffer |
| * @param url the URL to split |
| */ |
| 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); |
| |
| /** |
| * Assembles a URL string from components. This is the reverse operation |
| * of ff_url_split. |
| * |
| * Note, this requires networking to be initialized, so the caller must |
| * ensure ff_network_init has been called. |
| * |
| * @see ff_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 |
| * @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, ...); |
| |
| /** |
| * Appends 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 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, |
| const char *dest_addr, int port, int ttl); |
| |
| #endif /* AVFORMAT_INTERNAL_H */ |