X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Finternal.h;h=6d3ec237679ad24f41dafe9d1327506fde75b8b7;hb=7b18d94cb3c44cab320f4ea177760fa14d82fe30;hp=15f4dd7848c0253343da9a74272087d0c8a4ab8c;hpb=949cd9783b9b6c868e360f0cd62f08d264fa13cc;p=ffmpeg diff --git a/libavformat/internal.h b/libavformat/internal.h index 15f4dd7848c..6d3ec237679 100644 --- a/libavformat/internal.h +++ b/libavformat/internal.h @@ -24,9 +24,46 @@ #include #include "avformat.h" -char *ff_data_to_hex(char *buf, const uint8_t *src, int size); +typedef struct AVCodecTag { + enum CodecID id; + unsigned int tag; +} AVCodecTag; -void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx); +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); + +/** + * 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 @@ -35,4 +72,124 @@ void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i 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); + +/** + * Probe 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); + +#if LIBAVFORMAT_VERSION_MAJOR < 53 +/** + * @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, ...); + +/** + * 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 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); + +/** + * 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(ByteIOContext *bc, uint64_t val); + +/** + * Read a whole line of text from ByteIOContext. 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 ByteIOContext + * @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(ByteIOContext *s, char *buf, int maxlen); + +#define SPACE_CHARS " \t\r\n" + #endif /* AVFORMAT_INTERNAL_H */