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/*
* 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_MUX_H
#define AVFORMAT_MUX_H
#include <stdint.h>
#include "libavcodec/packet.h"
#include "avformat.h"
/**
* Add packet to an AVFormatContext's packet_buffer list, determining its
* interleaved position using compare() function argument.
* @return 0 on success, < 0 on error. pkt will always be blank on return.
*/
int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
int (*compare)(AVFormatContext *, const AVPacket *, const AVPacket *));
/**
* Interleave an AVPacket per dts so it can be muxed.
* See the documentation of AVOutputFormat.interleave_packet for details.
*/
int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *pkt,
int flush, int has_packet);
/**
* Interleave packets directly in the order in which they arrive
* without any sort of buffering.
*/
int ff_interleave_packet_passthrough(AVFormatContext *s, AVPacket *pkt,
int flush, int has_packet);
/**
* Find the next packet in the interleaving queue for the given stream.
*
* @return a pointer to a packet if one was found, NULL otherwise.
*/
const AVPacket *ff_interleaved_peek(AVFormatContext *s, int stream);
int ff_get_muxer_ts_offset(AVFormatContext *s, int stream_index, int64_t *offset);
/**
* Add a bitstream filter to a stream.
*
* @param st output stream to add a filter to
* @param name the name of the filter to add
* @param args filter-specific argument string
* @return >0 on success;
* AVERROR code on failure
*/
int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args);
/**
* 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. It will be returned blank when
* av_interleaved_write_frame() is used, unchanged otherwise.
* @param src the muxer the packet originally was intended for
* @param interleave 0->use av_write_frame, 1->av_interleaved_write_frame
* @return the value av_write_frame returned
*/
int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
AVFormatContext *src, int interleave);
/**
* Flags for AVFormatContext.write_uncoded_frame()
*/
enum AVWriteUncodedFrameFlags {
/**
* Query whether the feature is possible on this stream.
* The frame argument is ignored.
*/
AV_WRITE_UNCODED_FRAME_QUERY = 0x0001,
};
/**
* Make shift_size amount of space at read_start by shifting data in the output
* at read_start until the current IO position. The underlying IO context must
* be seekable.
*/
int ff_format_shift_data(AVFormatContext *s, int64_t read_start, int shift_size);
/**
* Utility function to open IO stream of output format.
*
* @param s AVFormatContext
* @param url URL or file name to open for writing
* @options optional options which will be passed to io_open callback
* @return >=0 on success, negative AVERROR in case of failure
*/
int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options);
/**
* Copy encoding parameters from source to destination stream
*
* @param dst pointer to destination AVStream
* @param src pointer to source AVStream
* @return >=0 on success, AVERROR code on error
*/
int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src);
/**
* Parse creation_time in AVFormatContext metadata if exists and warn if the
* parsing fails.
*
* @param s AVFormatContext
* @param timestamp parsed timestamp in microseconds, only set on successful parsing
* @param return_seconds set this to get the number of seconds in timestamp instead of microseconds
* @return 1 if OK, 0 if the metadata was not present, AVERROR(EINVAL) on parse error
*/
int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds);
/**
* Standardize creation_time metadata in AVFormatContext to an ISO-8601
* timestamp string.
*
* @param s AVFormatContext
* @return <0 on error
*/
int ff_standardize_creation_time(AVFormatContext *s);
#endif /* AVFORMAT_MUX_H */
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