X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Finternal.h;h=559e710014dfc7cdaab903dac42869d33f5dd15c;hb=4e8d6218c3cb8b9feffb70f8a53859540b975b36;hp=e53da7d46db6ff75c9e1c502b0ac705e0d3c2154;hpb=e6fb5a4f78a67ed815e39ba8ac3893fd631b9b1a;p=ffmpeg diff --git a/libavformat/internal.h b/libavformat/internal.h index e53da7d46db..559e710014d 100644 --- a/libavformat/internal.h +++ b/libavformat/internal.h @@ -1,20 +1,20 @@ /* * copyright (c) 2001 Fabrice Bellard * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -26,6 +26,12 @@ #define MAX_URL_SIZE 4096 +#ifdef DEBUG +# define hex_dump_debug(class, buf, size) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size) +#else +# define hex_dump_debug(class, buf, size) +#endif + typedef struct AVCodecTag { enum CodecID id; unsigned int tag; @@ -48,10 +54,7 @@ do {\ } 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); @@ -82,37 +85,6 @@ void ff_read_frame_flush(AVFormatContext *s); /** 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 FF_API_URL_SPLIT -/** - * @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. @@ -136,7 +108,7 @@ void ff_url_split(char *proto, int proto_size, */ int ff_url_join(char *str, int size, const char *proto, const char *authorization, const char *hostname, - int port, const char *fmt, ...); + int port, const char *fmt, ...) av_printf_format(7, 8); /** * Append the media-specific SDP fragment for the media stream c @@ -152,10 +124,12 @@ int ff_url_join(char *str, int size, const char *proto, * @param dest_type the destination address type, 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 + * @param fmt the AVFormatContext, which might contain options modifying + * the generated SDP */ void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, const char *dest_type, - int port, int ttl); + int port, int ttl, AVFormatContext *fmt); /** * Write a packet to another muxer than the one the user originally @@ -179,20 +153,20 @@ 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); +void ff_put_v(AVIOContext *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, + * Read a whole line of text from AVIOContext. 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 s the read-only AVIOContext * @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 + * final \\0 */ -int ff_get_line(ByteIOContext *s, char *buf, int maxlen); +int ff_get_line(AVIOContext *s, char *buf, int maxlen); #define SPACE_CHARS " \t\r\n" @@ -240,4 +214,97 @@ int ff_add_index_entry(AVIndexEntry **index_entries, unsigned int *index_entries_allocated_size, int64_t pos, int64_t timestamp, int size, int distance, int flags); +/** + * 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 *avpriv_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); + +/* + * 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); + +enum CodecID ff_guess_image2_codec(const char *filename); + +/** + * Convert a date string in ISO8601 format to Unix timestamp. + */ +int64_t ff_iso8601_to_unix_time(const char *datestr); + +/** + * Perform a binary search using av_index_search_timestamp() and + * AVInputFormat.read_timestamp(). + * + * @param target_ts target timestamp in the time base of the given stream + * @param stream_index stream number + */ +int ff_seek_frame_binary(AVFormatContext *s, int stream_index, + int64_t target_ts, int flags); + +/** + * Update cur_dts of all streams based on the given timestamp and AVStream. + * + * Stream ref_st unchanged, others set cur_dts in their native time base. + * Only needed for timestamp wrapping or if (dts not set and pts!=dts). + * @param timestamp new dts expressed in time_base of param ref_st + * @param ref_st reference stream giving time_base of param timestamp + */ +void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp); + +/** + * Perform a binary search using read_timestamp(). + * + * @param target_ts target timestamp in the time base of the given stream + * @param stream_index stream number + */ +int64_t ff_gen_search(AVFormatContext *s, int stream_index, + int64_t target_ts, int64_t pos_min, + int64_t pos_max, int64_t pos_limit, + int64_t ts_min, int64_t ts_max, + int flags, int64_t *ts_ret, + int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )); + +/** + * Set the pts for a given stream. If the new values would be invalid + * (<= 0), it leaves the AVStream unchanged. + * + * @param s stream + * @param pts_wrap_bits number of bits effectively used by the pts + * (used for wrap control, 33 is the value for MPEG) + * @param pts_num numerator to convert to seconds (MPEG: 1) + * @param pts_den denominator to convert to seconds (MPEG: 90000) + */ +void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, + unsigned int pts_num, unsigned int pts_den); + +/** + * Add side data to a packet for changing parameters to the given values. + * Parameters set to 0 aren't included in the change. + */ +int ff_add_param_change(AVPacket *pkt, int32_t channels, + uint64_t channel_layout, int32_t sample_rate, + int32_t width, int32_t height); + #endif /* AVFORMAT_INTERNAL_H */