2006-09-10 14:02:42 +00:00
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/*
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* copyright (c) 2001 Fabrice Bellard
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*
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2006-10-07 15:30:46 +00:00
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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2006-09-10 14:02:42 +00:00
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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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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2006-09-10 14:02:42 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* FFmpeg is distributed in the hope that it will be useful,
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2006-09-10 14:02:42 +00:00
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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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2006-10-07 15:30:46 +00:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-09-10 14:02:42 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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2007-10-17 09:37:46 +00:00
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#ifndef FFMPEG_AVFORMAT_H
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#define FFMPEG_AVFORMAT_H
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2001-07-22 14:18:56 +00:00
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2007-10-22 06:01:38 +00:00
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#define LIBAVFORMAT_VERSION_INT ((51<<16)+(17<<8)+0)
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#define LIBAVFORMAT_VERSION 51.17.0
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2005-07-31 10:51:04 +00:00
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#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
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2003-09-05 14:41:53 +00:00
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2005-07-31 10:51:04 +00:00
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#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
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2002-04-15 02:28:05 +00:00
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2003-09-08 21:20:55 +00:00
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#include <time.h>
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2003-11-13 22:15:11 +00:00
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#include <stdio.h> /* FILE */
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2001-07-22 14:18:56 +00:00
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#include "avcodec.h"
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#include "avio.h"
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/* packet functions */
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typedef struct AVPacket {
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2005-05-26 20:17:12 +00:00
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int64_t pts; ///< presentation time stamp in time_base units
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int64_t dts; ///< decompression time stamp in time_base units
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2003-02-11 16:35:48 +00:00
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uint8_t *data;
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2003-02-03 22:58:29 +00:00
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int size;
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int stream_index;
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int flags;
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2005-05-26 20:17:12 +00:00
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int duration; ///< presentation duration in time_base units (0 if not available)
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2003-02-03 22:58:29 +00:00
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void (*destruct)(struct AVPacket *);
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void *priv;
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2005-05-26 20:17:12 +00:00
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int64_t pos; ///< byte position in stream, -1 if unknown
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2005-12-17 18:14:38 +00:00
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} AVPacket;
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2003-02-03 22:58:29 +00:00
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#define PKT_FLAG_KEY 0x0001
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2004-09-28 21:09:25 +00:00
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void av_destruct_packet_nofree(AVPacket *pkt);
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2007-03-03 12:23:20 +00:00
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/**
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* Default packet destructor.
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*/
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2005-06-27 00:04:03 +00:00
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void av_destruct_packet(AVPacket *pkt);
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2004-09-28 21:09:25 +00:00
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2007-06-04 20:48:04 +00:00
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/**
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* Initialize optional fields of a packet to default values.
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*
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* @param pkt packet
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*/
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2007-06-04 16:52:02 +00:00
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void av_init_packet(AVPacket *pkt);
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2001-07-22 14:18:56 +00:00
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2007-03-03 12:23:20 +00:00
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/**
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2007-06-04 23:07:27 +00:00
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* Allocate the payload of a packet and initialize its fields to default values.
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2007-03-03 12:23:20 +00:00
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*
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* @param pkt packet
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* @param size wanted payload size
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* @return 0 if OK. AVERROR_xxx otherwise.
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*/
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2001-07-22 14:18:56 +00:00
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int av_new_packet(AVPacket *pkt, int size);
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2007-03-03 12:23:20 +00:00
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/**
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2007-06-04 23:07:27 +00:00
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* Allocate and read the payload of a packet and initialize its fields to default values.
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2007-03-03 12:23:20 +00:00
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*
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* @param pkt packet
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* @param size wanted payload size
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* @return >0 (read size) if OK. AVERROR_xxx otherwise.
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*/
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2005-05-26 20:17:12 +00:00
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int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
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2007-03-03 12:23:20 +00:00
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2007-03-05 00:23:23 +00:00
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/**
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* @warning This is a hack - the packet memory allocation stuff is broken. The
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* packet is allocated if it was not really allocated
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*/
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2003-11-10 18:37:55 +00:00
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int av_dup_packet(AVPacket *pkt);
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2003-02-03 22:58:29 +00:00
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/**
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* Free a packet
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*
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* @param pkt packet to free
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*/
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static inline void av_free_packet(AVPacket *pkt)
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{
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2003-07-04 23:48:20 +00:00
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if (pkt && pkt->destruct) {
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2005-12-22 01:10:11 +00:00
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pkt->destruct(pkt);
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2003-07-04 23:48:20 +00:00
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}
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2003-02-03 22:58:29 +00:00
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}
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2001-07-22 14:18:56 +00:00
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2002-10-21 15:54:49 +00:00
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/*************************************************/
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/* fractional numbers for exact pts handling */
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2007-05-02 09:13:47 +00:00
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/**
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* the exact value of the fractional number is: 'val + num / den'.
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* num is assumed to be such as 0 <= num < den
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* @deprecated Use AVRational instead
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*/
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2002-10-21 15:54:49 +00:00
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typedef struct AVFrac {
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2005-12-17 18:14:38 +00:00
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int64_t val, num, den;
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2006-08-20 10:42:11 +00:00
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} AVFrac attribute_deprecated;
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2002-10-21 15:54:49 +00:00
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2001-07-22 14:18:56 +00:00
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/*************************************************/
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2002-05-20 16:28:47 +00:00
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/* input/output formats */
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2001-07-22 14:18:56 +00:00
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2007-01-21 01:39:17 +00:00
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struct AVCodecTag;
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2001-07-22 14:18:56 +00:00
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struct AVFormatContext;
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2002-05-20 16:28:47 +00:00
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2007-03-05 00:23:23 +00:00
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/** this structure contains the data a format has to probe a file */
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2002-05-20 16:28:47 +00:00
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typedef struct AVProbeData {
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2003-02-10 09:35:32 +00:00
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const char *filename;
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2002-05-20 16:28:47 +00:00
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unsigned char *buf;
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int buf_size;
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} AVProbeData;
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2006-09-09 08:57:55 +00:00
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#define AVPROBE_SCORE_MAX 100 ///< max score, half of that is used for file extension based detection
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2007-04-08 11:34:15 +00:00
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#define AVPROBE_PADDING_SIZE 32 ///< extra allocated bytes at the end of the probe buffer
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2001-07-22 14:18:56 +00:00
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typedef struct AVFormatParameters {
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2005-04-30 21:43:59 +00:00
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AVRational time_base;
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2001-07-22 14:18:56 +00:00
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int sample_rate;
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int channels;
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int width;
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int height;
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2002-04-08 20:58:56 +00:00
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enum PixelFormat pix_fmt;
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2007-03-05 00:23:23 +00:00
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int channel; /**< used to select dv channel */
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2007-02-14 17:01:32 +00:00
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#if LIBAVFORMAT_VERSION_INT < (52<<16)
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2007-03-05 00:23:23 +00:00
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const char *device; /**< video, audio or DV device */
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2007-02-14 17:01:32 +00:00
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#endif
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2007-03-05 00:23:23 +00:00
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const char *standard; /**< tv standard, NTSC, PAL, SECAM */
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int mpeg2ts_raw:1; /**< force raw MPEG2 transport stream output, if possible */
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int mpeg2ts_compute_pcr:1; /**< compute exact PCR for each transport
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2003-10-29 14:20:56 +00:00
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stream packet (only meaningful if
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2007-06-04 21:05:58 +00:00
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mpeg2ts_raw is TRUE) */
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2007-03-05 00:23:23 +00:00
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int initial_pause:1; /**< do not begin to play the stream
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2003-11-10 18:37:55 +00:00
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immediately (RTSP only) */
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2006-08-27 12:14:13 +00:00
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int prealloced_context:1;
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2004-11-11 18:09:28 +00:00
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enum CodecID video_codec_id;
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enum CodecID audio_codec_id;
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2001-07-22 14:18:56 +00:00
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} AVFormatParameters;
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2007-01-19 22:54:50 +00:00
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//! demuxer will use url_fopen, no opened file should be provided by the caller
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#define AVFMT_NOFILE 0x0001
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2007-03-05 00:23:23 +00:00
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#define AVFMT_NEEDNUMBER 0x0002 /**< needs '%d' in filename */
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#define AVFMT_SHOW_IDS 0x0008 /**< show format stream IDs numbers */
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#define AVFMT_RAWPICTURE 0x0020 /**< format wants AVPicture structure for
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2002-07-24 18:05:26 +00:00
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raw picture data */
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2007-03-05 00:23:23 +00:00
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#define AVFMT_GLOBALHEADER 0x0040 /**< format wants global header */
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2007-06-12 09:29:25 +00:00
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#define AVFMT_NOTIMESTAMPS 0x0080 /**< format does not need / have any timestamps */
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2007-03-05 00:23:23 +00:00
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#define AVFMT_GENERIC_INDEX 0x0100 /**< use generic index building code */
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2002-05-20 16:28:47 +00:00
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typedef struct AVOutputFormat {
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2001-07-22 14:18:56 +00:00
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const char *name;
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const char *long_name;
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const char *mime_type;
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2007-03-05 16:12:29 +00:00
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const char *extensions; /**< comma separated filename extensions */
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2007-03-05 00:23:23 +00:00
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/** size of private data so that it can be allocated in the wrapper */
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2002-05-20 16:28:47 +00:00
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int priv_data_size;
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2001-07-22 14:18:56 +00:00
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/* output support */
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2007-03-05 00:23:23 +00:00
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enum CodecID audio_codec; /**< default audio codec */
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enum CodecID video_codec; /**< default video codec */
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2001-07-22 14:18:56 +00:00
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int (*write_header)(struct AVFormatContext *);
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2004-05-29 02:06:32 +00:00
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int (*write_packet)(struct AVFormatContext *, AVPacket *pkt);
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2001-07-22 14:18:56 +00:00
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int (*write_trailer)(struct AVFormatContext *);
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2007-03-05 00:23:23 +00:00
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/** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_GLOBALHEADER */
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2002-05-20 16:28:47 +00:00
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int flags;
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2007-03-05 00:23:23 +00:00
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/** currently only used to set pixel format if not YUV420P */
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2003-01-11 04:56:29 +00:00
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int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
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2004-09-29 23:25:01 +00:00
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int (*interleave_packet)(struct AVFormatContext *, AVPacket *out, AVPacket *in, int flush);
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2007-01-21 01:39:17 +00:00
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/**
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* list of supported codec_id-codec_tag pairs, ordered by "better choice first"
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* the arrays are all CODEC_ID_NONE terminated
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*/
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2007-01-21 12:08:31 +00:00
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const struct AVCodecTag **codec_tag;
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2007-01-21 01:39:17 +00:00
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2007-07-25 19:47:44 +00:00
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enum CodecID subtitle_codec; /**< default subtitle codec */
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2002-05-20 16:28:47 +00:00
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/* private fields */
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struct AVOutputFormat *next;
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} AVOutputFormat;
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2001-07-22 14:18:56 +00:00
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2002-05-20 16:28:47 +00:00
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typedef struct AVInputFormat {
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const char *name;
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const char *long_name;
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2007-03-05 00:23:23 +00:00
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/** size of private data so that it can be allocated in the wrapper */
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2002-05-20 16:28:47 +00:00
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int priv_data_size;
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2007-08-10 16:15:23 +00:00
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/**
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* tell if a given file has a chance of being parsed by this format.
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* The buffer provided is guranteed to be AVPROBE_PADDING_SIZE bytes big
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* so you dont have to check for that unless you need more.
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*/
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2002-05-20 16:28:47 +00:00
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int (*read_probe)(AVProbeData *);
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2007-03-05 00:23:23 +00:00
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/** read the format header and initialize the AVFormatContext
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2001-07-22 14:18:56 +00:00
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structure. Return 0 if OK. 'ap' if non NULL contains
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2007-04-07 14:09:20 +00:00
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additional paramters. Only used in raw format right
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2002-05-20 16:28:47 +00:00
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now. 'av_new_stream' should be called to create new streams. */
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2001-07-22 14:18:56 +00:00
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int (*read_header)(struct AVFormatContext *,
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AVFormatParameters *ap);
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2007-03-05 00:23:23 +00:00
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/** read one packet and put it in 'pkt'. pts and flags are also
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2002-05-20 16:28:47 +00:00
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set. 'av_new_stream' can be called only if the flag
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2003-10-29 14:20:56 +00:00
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AVFMTCTX_NOHEADER is used. */
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2001-07-22 14:18:56 +00:00
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int (*read_packet)(struct AVFormatContext *, AVPacket *pkt);
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2007-03-05 00:23:23 +00:00
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/** close the stream. The AVFormatContext and AVStreams are not
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2001-07-22 14:18:56 +00:00
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freed by this function */
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int (*read_close)(struct AVFormatContext *);
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2005-12-17 18:14:38 +00:00
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/**
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* seek to a given timestamp relative to the frames in
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2004-10-10 22:05:43 +00:00
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* stream component stream_index
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* @param stream_index must not be -1
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2005-12-17 18:14:38 +00:00
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* @param flags selects which direction should be preferred if no exact
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2004-10-10 22:05:43 +00:00
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* match is available
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2007-06-25 02:08:04 +00:00
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* @return >= 0 on success (but not necessarily the new offset)
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2004-10-10 22:05:43 +00:00
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*/
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2005-12-17 18:14:38 +00:00
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int (*read_seek)(struct AVFormatContext *,
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2004-10-10 22:05:43 +00:00
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int stream_index, int64_t timestamp, int flags);
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2004-04-12 16:50:03 +00:00
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/**
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* gets the next timestamp in AV_TIME_BASE units.
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*/
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int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
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int64_t *pos, int64_t pos_limit);
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2007-03-05 00:23:23 +00:00
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/** can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER */
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2001-07-22 14:18:56 +00:00
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int flags;
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2007-03-05 00:23:23 +00:00
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/** if extensions are defined, then no probe is done. You should
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2002-05-20 16:28:47 +00:00
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usually not use extension format guessing because it is not
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reliable enough */
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const char *extensions;
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2007-03-05 00:23:23 +00:00
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/** general purpose read only value that the format can use */
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2002-05-20 16:28:47 +00:00
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int value;
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2003-11-10 18:37:55 +00:00
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2007-03-05 00:23:23 +00:00
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/** start/resume playing - only meaningful if using a network based format
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2003-11-10 18:37:55 +00:00
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(RTSP) */
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int (*read_play)(struct AVFormatContext *);
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2007-03-05 00:23:23 +00:00
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/** pause playing - only meaningful if using a network based format
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2003-11-10 18:37:55 +00:00
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(RTSP) */
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int (*read_pause)(struct AVFormatContext *);
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2007-01-21 12:08:31 +00:00
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const struct AVCodecTag **codec_tag;
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2007-01-21 01:39:17 +00:00
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2002-05-20 16:28:47 +00:00
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/* private fields */
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struct AVInputFormat *next;
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} AVInputFormat;
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2001-07-22 14:18:56 +00:00
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2007-04-15 13:51:57 +00:00
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enum AVStreamParseType {
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AVSTREAM_PARSE_NONE,
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AVSTREAM_PARSE_FULL, /**< full parsing and repack */
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|
|
AVSTREAM_PARSE_HEADERS, /**< only parse headers, don't repack */
|
|
|
|
AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on packet boundary */
|
|
|
|
};
|
|
|
|
|
2003-11-10 18:37:55 +00:00
|
|
|
typedef struct AVIndexEntry {
|
|
|
|
int64_t pos;
|
|
|
|
int64_t timestamp;
|
|
|
|
#define AVINDEX_KEYFRAME 0x0001
|
2006-03-01 11:29:55 +00:00
|
|
|
int flags:2;
|
2007-06-12 18:50:50 +00:00
|
|
|
int size:30; //Yeah, trying to keep the size of this small to reduce memory requirements (it is 24 vs 32 byte due to possible 8byte align).
|
2007-03-05 00:23:23 +00:00
|
|
|
int min_distance; /**< min distance between this and the previous keyframe, used to avoid unneeded searching */
|
2003-11-10 18:37:55 +00:00
|
|
|
} AVIndexEntry;
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
typedef struct AVStream {
|
2007-03-05 00:23:23 +00:00
|
|
|
int index; /**< stream index in AVFormatContext */
|
|
|
|
int id; /**< format specific stream id */
|
|
|
|
AVCodecContext *codec; /**< codec context */
|
2005-06-24 11:38:22 +00:00
|
|
|
/**
|
|
|
|
* real base frame rate of the stream.
|
2006-11-12 13:54:11 +00:00
|
|
|
* this is the lowest framerate with which all timestamps can be
|
2007-06-04 21:05:58 +00:00
|
|
|
* represented accurately (it is the least common multiple of all
|
2006-11-12 13:54:11 +00:00
|
|
|
* framerates in the stream), Note, this value is just a guess!
|
2005-12-17 18:14:38 +00:00
|
|
|
* for example if the timebase is 1/90000 and all frames have either
|
2005-06-24 11:38:22 +00:00
|
|
|
* approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1
|
|
|
|
*/
|
|
|
|
AVRational r_frame_rate;
|
2001-07-22 14:18:56 +00:00
|
|
|
void *priv_data;
|
2007-08-04 22:46:13 +00:00
|
|
|
|
2002-05-20 16:28:47 +00:00
|
|
|
/* internal data used in av_find_stream_info() */
|
2007-08-04 22:46:13 +00:00
|
|
|
int64_t first_dts;
|
|
|
|
#if LIBAVFORMAT_VERSION_INT < (52<<16)
|
2003-11-10 18:37:55 +00:00
|
|
|
int codec_info_nb_frames;
|
2007-03-12 10:59:47 +00:00
|
|
|
#endif
|
2007-03-05 00:23:23 +00:00
|
|
|
/** encoding: PTS generation when outputing stream */
|
2007-07-09 22:15:11 +00:00
|
|
|
struct AVFrac pts;
|
2005-08-21 22:31:01 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* this is the fundamental unit of time (in seconds) in terms
|
|
|
|
* of which frame timestamps are represented. for fixed-fps content,
|
|
|
|
* timebase should be 1/framerate and timestamp increments should be
|
|
|
|
* identically 1.
|
|
|
|
*/
|
2004-05-21 20:43:21 +00:00
|
|
|
AVRational time_base;
|
2007-03-05 00:23:23 +00:00
|
|
|
int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
|
2002-10-11 09:16:05 +00:00
|
|
|
/* ffmpeg.c private use */
|
2007-03-05 16:10:05 +00:00
|
|
|
int stream_copy; /**< if set, just copy stream */
|
2007-06-12 09:29:25 +00:00
|
|
|
enum AVDiscard discard; ///< selects which packets can be discarded at will and do not need to be demuxed
|
2005-01-22 01:48:11 +00:00
|
|
|
//FIXME move stuff to a flags field?
|
2007-03-05 00:23:23 +00:00
|
|
|
/** quality, as it has been removed from AVCodecContext and put in AVVideoFrame
|
2007-06-12 09:29:25 +00:00
|
|
|
* MN: dunno if that is the right place for it */
|
2005-12-17 18:14:38 +00:00
|
|
|
float quality;
|
2007-08-16 12:07:05 +00:00
|
|
|
/**
|
|
|
|
* decoding: pts of the first frame of the stream, in stream time base.
|
|
|
|
* only set this if you are absolutely 100% sure that the value you set
|
|
|
|
* it to really is the pts of the first frame
|
2007-08-18 00:31:32 +00:00
|
|
|
* This may be undefined (AV_NOPTS_VALUE).
|
2007-08-16 12:07:05 +00:00
|
|
|
* @note the ASF header does NOT contain a correct start_time the ASF
|
|
|
|
* demuxer must NOT set this
|
|
|
|
*/
|
2005-12-17 18:14:38 +00:00
|
|
|
int64_t start_time;
|
2007-08-18 00:35:43 +00:00
|
|
|
/**
|
|
|
|
* decoding: duration of the stream, in stream time base.
|
|
|
|
* If a source file does not specify a duration, but does specify
|
|
|
|
* a bitrate, this value will be estimates from bit rate and file size.
|
|
|
|
*/
|
2003-08-08 17:49:27 +00:00
|
|
|
int64_t duration;
|
2003-11-10 18:37:55 +00:00
|
|
|
|
2007-03-05 00:23:23 +00:00
|
|
|
char language[4]; /** ISO 639 3-letter language code (empty string if undefined) */
|
2005-06-03 14:02:29 +00:00
|
|
|
|
2003-11-10 18:37:55 +00:00
|
|
|
/* av_read_frame() support */
|
2007-04-15 13:51:57 +00:00
|
|
|
enum AVStreamParseType need_parsing;
|
2003-11-10 18:37:55 +00:00
|
|
|
struct AVCodecParserContext *parser;
|
2003-12-16 11:21:25 +00:00
|
|
|
|
2003-11-10 18:37:55 +00:00
|
|
|
int64_t cur_dts;
|
|
|
|
int last_IP_duration;
|
2004-05-23 21:36:23 +00:00
|
|
|
int64_t last_IP_pts;
|
2003-11-10 18:37:55 +00:00
|
|
|
/* av_seek_frame() support */
|
2007-03-05 00:23:23 +00:00
|
|
|
AVIndexEntry *index_entries; /**< only used if the format does not
|
2003-11-10 18:37:55 +00:00
|
|
|
support seeking natively */
|
|
|
|
int nb_index_entries;
|
2006-09-27 19:47:39 +00:00
|
|
|
unsigned int index_entries_allocated_size;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2005-06-24 11:38:22 +00:00
|
|
|
int64_t nb_frames; ///< number of frames in this stream if known or 0
|
2006-08-30 21:18:17 +00:00
|
|
|
|
|
|
|
#define MAX_REORDER_DELAY 4
|
|
|
|
int64_t pts_buffer[MAX_REORDER_DELAY+1];
|
2001-07-22 14:18:56 +00:00
|
|
|
} AVStream;
|
|
|
|
|
2007-09-25 20:45:46 +00:00
|
|
|
#define AV_PROGRAM_RUNNING 1
|
|
|
|
|
|
|
|
typedef struct AVProgram {
|
|
|
|
int id;
|
|
|
|
char *provider_name; ///< Network name for DVB streams
|
|
|
|
char *name; ///< Service name for DVB streams
|
|
|
|
int flags;
|
|
|
|
enum AVDiscard discard; ///< selects which program to discard and which to feed to the caller
|
2007-10-20 08:25:13 +00:00
|
|
|
unsigned int *stream_index;
|
|
|
|
unsigned int nb_stream_indexes;
|
2007-09-25 20:45:46 +00:00
|
|
|
} AVProgram;
|
|
|
|
|
2007-03-05 00:23:23 +00:00
|
|
|
#define AVFMTCTX_NOHEADER 0x0001 /**< signal that no header is present
|
2003-10-29 14:20:56 +00:00
|
|
|
(streams are added dynamically) */
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
#define MAX_STREAMS 20
|
|
|
|
|
|
|
|
/* format I/O context */
|
|
|
|
typedef struct AVFormatContext {
|
2007-03-05 00:23:23 +00:00
|
|
|
const AVClass *av_class; /**< set by av_alloc_format_context */
|
2002-05-20 16:28:47 +00:00
|
|
|
/* can only be iformat or oformat, not both at the same time */
|
|
|
|
struct AVInputFormat *iformat;
|
|
|
|
struct AVOutputFormat *oformat;
|
2001-07-22 14:18:56 +00:00
|
|
|
void *priv_data;
|
|
|
|
ByteIOContext pb;
|
2007-01-16 22:31:10 +00:00
|
|
|
unsigned int nb_streams;
|
2001-07-22 14:18:56 +00:00
|
|
|
AVStream *streams[MAX_STREAMS];
|
2007-03-05 00:23:23 +00:00
|
|
|
char filename[1024]; /**< input or output filename */
|
2001-07-22 14:18:56 +00:00
|
|
|
/* stream info */
|
2004-04-06 06:31:12 +00:00
|
|
|
int64_t timestamp;
|
2001-07-22 14:18:56 +00:00
|
|
|
char title[512];
|
|
|
|
char author[512];
|
|
|
|
char copyright[512];
|
|
|
|
char comment[512];
|
2003-09-08 22:34:28 +00:00
|
|
|
char album[512];
|
2007-03-05 00:23:23 +00:00
|
|
|
int year; /**< ID3 year, 0 if none */
|
|
|
|
int track; /**< track number, 0 if none */
|
|
|
|
char genre[32]; /**< ID3 genre */
|
2003-09-08 22:34:28 +00:00
|
|
|
|
2007-03-05 00:23:23 +00:00
|
|
|
int ctx_flags; /**< format specific flags, see AVFMTCTX_xx */
|
2002-10-21 15:54:49 +00:00
|
|
|
/* private data for pts handling (do not modify directly) */
|
2007-03-05 00:23:23 +00:00
|
|
|
/** This buffer is only needed when packets were already buffered but
|
2001-07-22 14:18:56 +00:00
|
|
|
not decoded, for example to get the codec parameters in mpeg
|
|
|
|
streams */
|
2003-08-08 17:49:27 +00:00
|
|
|
struct AVPacketList *packet_buffer;
|
|
|
|
|
2007-03-05 00:23:23 +00:00
|
|
|
/** decoding: position of the first frame of the component, in
|
2003-08-08 17:49:27 +00:00
|
|
|
AV_TIME_BASE fractional seconds. NEVER set this value directly:
|
|
|
|
it is deduced from the AVStream values. */
|
2005-12-17 18:14:38 +00:00
|
|
|
int64_t start_time;
|
2007-03-05 00:23:23 +00:00
|
|
|
/** decoding: duration of the stream, in AV_TIME_BASE fractional
|
2003-08-08 17:49:27 +00:00
|
|
|
seconds. NEVER set this value directly: it is deduced from the
|
|
|
|
AVStream values. */
|
|
|
|
int64_t duration;
|
2007-03-05 00:23:23 +00:00
|
|
|
/** decoding: total file size. 0 if unknown */
|
2003-08-08 17:49:27 +00:00
|
|
|
int64_t file_size;
|
2007-03-05 00:23:23 +00:00
|
|
|
/** decoding: total stream bitrate in bit/s, 0 if not
|
2003-08-08 17:49:27 +00:00
|
|
|
available. Never set it directly if the file_size and the
|
|
|
|
duration are known as ffmpeg can compute it automatically. */
|
|
|
|
int bit_rate;
|
2003-11-10 18:37:55 +00:00
|
|
|
|
|
|
|
/* av_read_frame() support */
|
|
|
|
AVStream *cur_st;
|
|
|
|
const uint8_t *cur_ptr;
|
|
|
|
int cur_len;
|
|
|
|
AVPacket cur_pkt;
|
|
|
|
|
|
|
|
/* av_seek_frame() support */
|
2007-03-05 00:23:23 +00:00
|
|
|
int64_t data_offset; /** offset of the first packet */
|
2003-11-10 18:37:55 +00:00
|
|
|
int index_built;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2004-10-06 22:29:30 +00:00
|
|
|
int mux_rate;
|
|
|
|
int packet_size;
|
2004-10-16 21:27:42 +00:00
|
|
|
int preload;
|
|
|
|
int max_delay;
|
2005-06-18 01:52:24 +00:00
|
|
|
|
2005-12-17 18:14:38 +00:00
|
|
|
#define AVFMT_NOOUTPUTLOOP -1
|
|
|
|
#define AVFMT_INFINITEOUTPUTLOOP 0
|
2007-03-05 00:23:23 +00:00
|
|
|
/** number of times to loop output in formats that support it */
|
2005-06-18 01:52:24 +00:00
|
|
|
int loop_output;
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2005-08-15 14:22:43 +00:00
|
|
|
int flags;
|
|
|
|
#define AVFMT_FLAG_GENPTS 0x0001 ///< generate pts if missing even if it requires parsing future frames
|
2006-09-05 19:23:32 +00:00
|
|
|
#define AVFMT_FLAG_IGNIDX 0x0002 ///< ignore index
|
2007-07-06 07:16:47 +00:00
|
|
|
#define AVFMT_FLAG_NONBLOCK 0x0004 ///< do not block when reading packets from input
|
2006-07-13 21:13:49 +00:00
|
|
|
|
|
|
|
int loop_input;
|
2007-03-05 00:23:23 +00:00
|
|
|
/** decoding: size of data to probe; encoding unused */
|
2006-08-27 12:21:19 +00:00
|
|
|
unsigned int probesize;
|
2007-01-23 17:34:26 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* maximum duration in AV_TIME_BASE units over which the input should be analyzed in av_find_stream_info()
|
|
|
|
*/
|
|
|
|
int max_analyze_duration;
|
2007-02-11 12:37:28 +00:00
|
|
|
|
|
|
|
const uint8_t *key;
|
|
|
|
int keylen;
|
2007-09-25 20:45:46 +00:00
|
|
|
|
|
|
|
unsigned int nb_programs;
|
|
|
|
AVProgram **programs;
|
2001-07-22 14:18:56 +00:00
|
|
|
} AVFormatContext;
|
|
|
|
|
|
|
|
typedef struct AVPacketList {
|
|
|
|
AVPacket pkt;
|
|
|
|
struct AVPacketList *next;
|
|
|
|
} AVPacketList;
|
|
|
|
|
2002-05-20 16:28:47 +00:00
|
|
|
extern AVInputFormat *first_iformat;
|
|
|
|
extern AVOutputFormat *first_oformat;
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2004-11-11 18:09:28 +00:00
|
|
|
enum CodecID av_guess_image2_codec(const char *filename);
|
2003-01-11 04:56:29 +00:00
|
|
|
|
2002-05-20 16:28:47 +00:00
|
|
|
/* XXX: use automatic init with either ELF sections or C file parser */
|
|
|
|
/* modules */
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2002-07-24 18:05:26 +00:00
|
|
|
#include "rtp.h"
|
|
|
|
|
|
|
|
#include "rtsp.h"
|
|
|
|
|
2002-05-20 16:28:47 +00:00
|
|
|
/* utils.c */
|
|
|
|
void av_register_input_format(AVInputFormat *format);
|
|
|
|
void av_register_output_format(AVOutputFormat *format);
|
2005-12-17 18:14:38 +00:00
|
|
|
AVOutputFormat *guess_stream_format(const char *short_name,
|
2002-07-27 02:52:52 +00:00
|
|
|
const char *filename, const char *mime_type);
|
2005-12-17 18:14:38 +00:00
|
|
|
AVOutputFormat *guess_format(const char *short_name,
|
2002-05-20 16:28:47 +00:00
|
|
|
const char *filename, const char *mime_type);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Guesses the codec id based upon muxer and filename.
|
|
|
|
*/
|
2005-12-17 18:14:38 +00:00
|
|
|
enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
|
2004-11-11 18:09:28 +00:00
|
|
|
const char *filename, const char *mime_type, enum CodecType type);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2007-03-03 12:23:20 +00:00
|
|
|
/**
|
2007-03-12 14:17:26 +00:00
|
|
|
* Send a nice hexadecimal dump of a buffer to the specified file stream.
|
|
|
|
*
|
|
|
|
* @param f The file stream pointer where the dump should be sent to.
|
2007-03-03 12:23:20 +00:00
|
|
|
* @param buf buffer
|
|
|
|
* @param size buffer size
|
2007-03-12 14:17:26 +00:00
|
|
|
*
|
|
|
|
* @see av_hex_dump_log, av_pkt_dump, av_pkt_dump_log
|
2007-03-03 12:23:20 +00:00
|
|
|
*/
|
2003-11-10 18:37:55 +00:00
|
|
|
void av_hex_dump(FILE *f, uint8_t *buf, int size);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
2007-03-12 14:17:26 +00:00
|
|
|
* Send a nice hexadecimal dump of a buffer to the log.
|
|
|
|
*
|
|
|
|
* @param avcl A pointer to an arbitrary struct of which the first field is a
|
|
|
|
* pointer to an AVClass struct.
|
|
|
|
* @param level The importance level of the message, lower values signifying
|
|
|
|
* higher importance.
|
|
|
|
* @param buf buffer
|
|
|
|
* @param size buffer size
|
|
|
|
*
|
|
|
|
* @see av_hex_dump, av_pkt_dump, av_pkt_dump_log
|
|
|
|
*/
|
|
|
|
void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Send a nice dump of a packet to the specified file stream.
|
|
|
|
*
|
|
|
|
* @param f The file stream pointer where the dump should be sent to.
|
2007-03-03 12:23:20 +00:00
|
|
|
* @param pkt packet to dump
|
|
|
|
* @param dump_payload true if the payload must be displayed too
|
|
|
|
*/
|
2003-11-10 18:37:55 +00:00
|
|
|
void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2007-03-12 14:17:26 +00:00
|
|
|
/**
|
|
|
|
* Send a nice dump of a packet to the log.
|
|
|
|
*
|
|
|
|
* @param avcl A pointer to an arbitrary struct of which the first field is a
|
|
|
|
* pointer to an AVClass struct.
|
|
|
|
* @param level The importance level of the message, lower values signifying
|
|
|
|
* higher importance.
|
|
|
|
* @param pkt packet to dump
|
|
|
|
* @param dump_payload true if the payload must be displayed too
|
|
|
|
*/
|
|
|
|
void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload);
|
|
|
|
|
2002-07-25 16:01:46 +00:00
|
|
|
void av_register_all(void);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2007-03-05 00:23:23 +00:00
|
|
|
/** codec tag <-> codec id */
|
2007-01-21 12:08:31 +00:00
|
|
|
enum CodecID av_codec_get_id(const struct AVCodecTag **tags, unsigned int tag);
|
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|
|
unsigned int av_codec_get_tag(const struct AVCodecTag **tags, enum CodecID id);
|
2007-01-21 01:39:17 +00:00
|
|
|
|
2002-05-20 16:28:47 +00:00
|
|
|
/* media file input */
|
2007-03-03 12:23:20 +00:00
|
|
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|
|
|
|
/**
|
|
|
|
* finds AVInputFormat based on input format's short name.
|
|
|
|
*/
|
2002-05-20 16:28:47 +00:00
|
|
|
AVInputFormat *av_find_input_format(const char *short_name);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Guess file format.
|
|
|
|
*
|
|
|
|
* @param is_opened whether the file is already opened, determines whether
|
|
|
|
* demuxers with or without AVFMT_NOFILE are probed
|
|
|
|
*/
|
2002-07-25 16:01:46 +00:00
|
|
|
AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Allocates all the structures needed to read an input stream.
|
|
|
|
* This does not open the needed codecs for decoding the stream[s].
|
|
|
|
*/
|
2005-12-17 18:14:38 +00:00
|
|
|
int av_open_input_stream(AVFormatContext **ic_ptr,
|
|
|
|
ByteIOContext *pb, const char *filename,
|
2003-10-29 14:20:56 +00:00
|
|
|
AVInputFormat *fmt, AVFormatParameters *ap);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
2007-06-04 21:05:58 +00:00
|
|
|
* Open a media file as input. The codecs are not opened. Only the file
|
2007-03-03 12:23:20 +00:00
|
|
|
* header (if present) is read.
|
|
|
|
*
|
|
|
|
* @param ic_ptr the opened media file handle is put here
|
|
|
|
* @param filename filename to open.
|
|
|
|
* @param fmt if non NULL, force the file format to use
|
|
|
|
* @param buf_size optional buffer size (zero if default is OK)
|
2007-04-07 14:09:20 +00:00
|
|
|
* @param ap additional parameters needed when opening the file (NULL if default)
|
2007-03-03 12:23:20 +00:00
|
|
|
* @return 0 if OK. AVERROR_xxx otherwise.
|
|
|
|
*/
|
2005-12-17 18:14:38 +00:00
|
|
|
int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
|
2002-05-20 16:28:47 +00:00
|
|
|
AVInputFormat *fmt,
|
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|
|
int buf_size,
|
|
|
|
AVFormatParameters *ap);
|
2007-03-05 00:23:23 +00:00
|
|
|
/** no av_open for output, so applications will need this: */
|
2004-03-03 15:41:21 +00:00
|
|
|
AVFormatContext *av_alloc_format_context(void);
|
2002-05-20 16:28:47 +00:00
|
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|
|
2007-03-03 12:23:20 +00:00
|
|
|
/**
|
|
|
|
* Read packets of a media file to get stream information. This
|
|
|
|
* is useful for file formats with no headers such as MPEG. This
|
|
|
|
* function also computes the real frame rate in case of mpeg2 repeat
|
|
|
|
* frame mode.
|
|
|
|
* The logical file position is not changed by this function;
|
|
|
|
* examined packets may be buffered for later processing.
|
|
|
|
*
|
|
|
|
* @param ic media file handle
|
|
|
|
* @return >=0 if OK. AVERROR_xxx if error.
|
2007-06-12 09:29:25 +00:00
|
|
|
* @todo Let user decide somehow what information is needed so we do not waste time geting stuff the user does not need.
|
2007-03-03 12:23:20 +00:00
|
|
|
*/
|
2002-05-20 16:28:47 +00:00
|
|
|
int av_find_stream_info(AVFormatContext *ic);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Read a transport packet from a media file.
|
|
|
|
*
|
2007-06-04 21:05:58 +00:00
|
|
|
* This function is obsolete and should never be used.
|
2007-03-03 12:23:20 +00:00
|
|
|
* Use av_read_frame() instead.
|
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
* @param pkt is filled
|
|
|
|
* @return 0 if OK. AVERROR_xxx if error.
|
|
|
|
*/
|
2001-07-22 14:18:56 +00:00
|
|
|
int av_read_packet(AVFormatContext *s, AVPacket *pkt);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Return the next frame of a stream.
|
|
|
|
*
|
|
|
|
* The returned packet is valid
|
|
|
|
* until the next av_read_frame() or until av_close_input_file() and
|
|
|
|
* must be freed with av_free_packet. For video, the packet contains
|
|
|
|
* exactly one frame. For audio, it contains an integer number of
|
|
|
|
* frames if each frame has a known fixed size (e.g. PCM or ADPCM
|
|
|
|
* data). If the audio frames have a variable size (e.g. MPEG audio),
|
|
|
|
* then it contains one frame.
|
|
|
|
*
|
|
|
|
* pkt->pts, pkt->dts and pkt->duration are always set to correct
|
2007-03-03 19:40:03 +00:00
|
|
|
* values in AVStream.timebase units (and guessed if the format cannot
|
2007-03-03 12:23:20 +00:00
|
|
|
* provided them). pkt->pts can be AV_NOPTS_VALUE if the video format
|
|
|
|
* has B frames, so it is better to rely on pkt->dts if you do not
|
|
|
|
* decompress the payload.
|
|
|
|
*
|
|
|
|
* @return 0 if OK, < 0 if error or end of file.
|
|
|
|
*/
|
2003-11-10 18:37:55 +00:00
|
|
|
int av_read_frame(AVFormatContext *s, AVPacket *pkt);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Seek to the key frame at timestamp.
|
|
|
|
* 'timestamp' in 'stream_index'.
|
|
|
|
* @param stream_index If stream_index is (-1), a default
|
|
|
|
* stream is selected, and timestamp is automatically converted
|
|
|
|
* from AV_TIME_BASE units to the stream specific time_base.
|
|
|
|
* @param timestamp timestamp in AVStream.time_base units
|
|
|
|
* or if there is no stream specified then in AV_TIME_BASE units
|
|
|
|
* @param flags flags which select direction and seeking mode
|
|
|
|
* @return >= 0 on success
|
|
|
|
*/
|
2004-10-10 22:05:43 +00:00
|
|
|
int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* start playing a network based stream (e.g. RTSP stream) at the
|
|
|
|
* current position
|
|
|
|
*/
|
2003-11-10 18:37:55 +00:00
|
|
|
int av_read_play(AVFormatContext *s);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Pause a network based stream (e.g. RTSP stream).
|
|
|
|
*
|
|
|
|
* Use av_read_play() to resume it.
|
|
|
|
*/
|
2003-11-10 18:37:55 +00:00
|
|
|
int av_read_pause(AVFormatContext *s);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Close a media file (but not its codecs).
|
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
*/
|
2001-07-22 14:18:56 +00:00
|
|
|
void av_close_input_file(AVFormatContext *s);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Add a new stream to a media file.
|
|
|
|
*
|
|
|
|
* Can only be called in the read_header() function. If the flag
|
|
|
|
* AVFMTCTX_NOHEADER is in the format context, then new streams
|
|
|
|
* can be added in read_packet too.
|
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
* @param id file format dependent stream id
|
|
|
|
*/
|
2002-05-20 16:28:47 +00:00
|
|
|
AVStream *av_new_stream(AVFormatContext *s, int id);
|
2007-09-25 20:45:46 +00:00
|
|
|
AVProgram *av_new_program(AVFormatContext *s, int id);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Set the pts for a given stream.
|
|
|
|
*
|
|
|
|
* @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)
|
|
|
|
*/
|
2004-05-21 20:43:21 +00:00
|
|
|
void av_set_pts_info(AVStream *s, int pts_wrap_bits,
|
2002-10-21 15:54:49 +00:00
|
|
|
int pts_num, int pts_den);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2004-10-10 22:05:43 +00:00
|
|
|
#define AVSEEK_FLAG_BACKWARD 1 ///< seek backward
|
|
|
|
#define AVSEEK_FLAG_BYTE 2 ///< seeking based on position in bytes
|
2005-03-13 00:13:01 +00:00
|
|
|
#define AVSEEK_FLAG_ANY 4 ///< seek to any frame, even non keyframes
|
2004-10-10 22:05:43 +00:00
|
|
|
|
2004-01-13 22:02:49 +00:00
|
|
|
int av_find_default_stream_index(AVFormatContext *s);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Gets the index for a specific timestamp.
|
|
|
|
* @param flags if AVSEEK_FLAG_BACKWARD then the returned index will correspond to
|
|
|
|
* the timestamp which is <= the requested one, if backward is 0
|
|
|
|
* then it will be >=
|
|
|
|
* if AVSEEK_FLAG_ANY seek to any frame, only keyframes otherwise
|
|
|
|
* @return < 0 if no such timestamp could be found
|
|
|
|
*/
|
2004-11-23 18:23:56 +00:00
|
|
|
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Add a index entry into a sorted list updateing if it is already there.
|
|
|
|
*
|
|
|
|
* @param timestamp timestamp in the timebase of the given stream
|
|
|
|
*/
|
2004-01-17 18:06:52 +00:00
|
|
|
int av_add_index_entry(AVStream *st,
|
2006-03-01 11:29:55 +00:00
|
|
|
int64_t pos, int64_t timestamp, int size, int distance, int flags);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Does a binary search using av_index_search_timestamp() and AVCodec.read_timestamp().
|
2007-06-12 09:29:25 +00:00
|
|
|
* This is not supposed to be called directly by a user application, but by demuxers.
|
2007-03-03 12:23:20 +00:00
|
|
|
* @param target_ts target timestamp in the time base of the given stream
|
|
|
|
* @param stream_index stream number
|
|
|
|
*/
|
2004-10-10 22:05:43 +00:00
|
|
|
int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Updates cur_dts of all streams based on given timestamp and AVStream.
|
|
|
|
*
|
|
|
|
* Stream ref_st unchanged, others set cur_dts in their native timebase
|
2007-06-12 09:29:25 +00:00
|
|
|
* only needed for timestamp wrapping or if (dts not set and pts!=dts).
|
2007-03-03 12:23:20 +00:00
|
|
|
* @param timestamp new dts expressed in time_base of param ref_st
|
|
|
|
* @param ref_st reference stream giving time_base of param timestamp
|
|
|
|
*/
|
2006-07-23 18:19:33 +00:00
|
|
|
void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Does a binary search using read_timestamp().
|
2007-06-12 09:29:25 +00:00
|
|
|
* This is not supposed to be called directly by a user application, but by demuxers.
|
2007-03-03 12:23:20 +00:00
|
|
|
* @param target_ts target timestamp in the time base of the given stream
|
|
|
|
* @param stream_index stream number
|
|
|
|
*/
|
2006-11-14 01:34:36 +00:00
|
|
|
int64_t av_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 ));
|
2004-01-13 22:02:49 +00:00
|
|
|
|
2007-03-05 00:23:23 +00:00
|
|
|
/** media file output */
|
2003-01-11 04:56:29 +00:00
|
|
|
int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
2007-06-12 09:29:25 +00:00
|
|
|
* Allocate the stream private data and write the stream header to an
|
|
|
|
* output media file.
|
2007-03-03 12:23:20 +00:00
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
* @return 0 if OK. AVERROR_xxx if error.
|
|
|
|
*/
|
2002-05-20 16:28:47 +00:00
|
|
|
int av_write_header(AVFormatContext *s);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Write a packet to an output media file.
|
|
|
|
*
|
|
|
|
* The packet shall contain one audio or video frame.
|
|
|
|
* The packet must be correctly interleaved according to the container specification,
|
|
|
|
* if not then av_interleaved_write_frame must be used
|
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
* @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
|
|
|
|
* @return < 0 if error, = 0 if OK, 1 if end of stream wanted.
|
|
|
|
*/
|
2004-05-29 02:06:32 +00:00
|
|
|
int av_write_frame(AVFormatContext *s, AVPacket *pkt);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Writes a packet to an output media file ensuring correct interleaving.
|
|
|
|
*
|
|
|
|
* The packet must contain one audio or video frame.
|
|
|
|
* If the packets are already correctly interleaved the application should
|
2007-06-12 18:50:50 +00:00
|
|
|
* call av_write_frame() instead as it is slightly faster. It is also important
|
|
|
|
* to keep in mind that completely non-interleaved input will need huge amounts
|
|
|
|
* of memory to interleave with this, so it is preferable to interleave at the
|
|
|
|
* demuxer level.
|
2007-03-03 12:23:20 +00:00
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
* @param pkt the packet, which contains the stream_index, buf/buf_size, dts/pts, ...
|
|
|
|
* @return < 0 if error, = 0 if OK, 1 if end of stream wanted.
|
|
|
|
*/
|
2004-05-29 18:50:31 +00:00
|
|
|
int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Interleave a packet per DTS in an output media file.
|
|
|
|
*
|
|
|
|
* Packets with pkt->destruct == av_destruct_packet will be freed inside this function,
|
|
|
|
* so they cannot be used after it, note calling av_free_packet() on them is still safe.
|
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
* @param out the interleaved packet will be output here
|
|
|
|
* @param in the input packet
|
|
|
|
* @param flush 1 if no further packets are available as input and all
|
|
|
|
* remaining packets should be output
|
|
|
|
* @return 1 if a packet was output, 0 if no packet could be output,
|
|
|
|
* < 0 if an error occured
|
|
|
|
*/
|
2006-08-11 21:21:51 +00:00
|
|
|
int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush);
|
2004-05-29 02:06:32 +00:00
|
|
|
|
2007-03-03 12:23:20 +00:00
|
|
|
/**
|
|
|
|
* @brief Write the stream trailer to an output media file and
|
|
|
|
* free the file private data.
|
|
|
|
*
|
|
|
|
* @param s media file handle
|
|
|
|
* @return 0 if OK. AVERROR_xxx if error.
|
|
|
|
*/
|
2002-05-20 16:28:47 +00:00
|
|
|
int av_write_trailer(AVFormatContext *s);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
|
|
|
void dump_format(AVFormatContext *ic,
|
2005-12-17 18:14:38 +00:00
|
|
|
int index,
|
2001-07-22 14:18:56 +00:00
|
|
|
const char *url,
|
|
|
|
int is_output);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* parses width and height out of string str.
|
2007-06-12 08:06:54 +00:00
|
|
|
* @deprecated Use av_parse_video_frame_size instead.
|
2007-03-03 12:23:20 +00:00
|
|
|
*/
|
2007-06-12 08:06:54 +00:00
|
|
|
attribute_deprecated int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
|
2007-03-03 12:23:20 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Converts frame rate from string to a fraction.
|
2007-06-12 08:06:54 +00:00
|
|
|
* @deprecated Use av_parse_video_frame_rate instead.
|
2007-03-03 12:23:20 +00:00
|
|
|
*/
|
2007-06-12 08:06:54 +00:00
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attribute_deprecated int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
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2007-03-03 12:23:20 +00:00
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/**
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2007-09-19 12:38:07 +00:00
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* Parses \p datestr and returns a corresponding number of microseconds.
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* @param datestr String representing a date or a duration.
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* - If a date the syntax is:
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2007-03-03 12:23:20 +00:00
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* @code
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* [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]}
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* @endcode
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2007-09-19 12:38:07 +00:00
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* Time is localtime unless Z is appended, in which case it is
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* interpreted as UTC.
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* If the year-month-day part isn't specified it takes the current
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* year-month-day.
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* Returns the number of microseconds since 1st of January, 1970 up to
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* the time of the parsed date or INT64_MIN if \p datestr cannot be
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* successfully parsed.
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* - If a duration the syntax is:
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* @code
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* [-]HH[:MM[:SS[.m...]]]
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* [-]S+[.m...]
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* @endcode
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* Returns the number of microseconds contained in a time interval
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* with the specified duration or INT64_MIN if \p datestr cannot be
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* succesfully parsed.
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* @param duration Flag which tells how to interpret \p datestr, if
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* not zero \p datestr is interpreted as a duration, otherwise as a
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* date.
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2007-03-03 12:23:20 +00:00
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*/
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2003-02-11 16:35:48 +00:00
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int64_t parse_date(const char *datestr, int duration);
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2001-07-22 14:18:56 +00:00
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2003-02-11 16:35:48 +00:00
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int64_t av_gettime(void);
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2002-07-25 16:01:46 +00:00
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2001-07-22 14:18:56 +00:00
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/* ffm specific for ffserver */
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#define FFM_PACKET_SIZE 4096
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offset_t ffm_read_write_index(int fd);
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void ffm_write_write_index(int fd, offset_t pos);
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void ffm_set_write_index(AVFormatContext *s, offset_t pos, offset_t file_size);
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2007-03-03 12:23:20 +00:00
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/**
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* Attempts to find a specific tag in a URL.
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*
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* syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done.
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* Return 1 if found.
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*/
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2001-07-22 14:18:56 +00:00
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int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
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2007-03-03 12:23:20 +00:00
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/**
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* Returns in 'buf' the path with '%d' replaced by number.
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* Also handles the '%0nd' format where 'n' is the total number
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* of digits and '%%'.
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*
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* @param buf destination buffer
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* @param buf_size destination buffer size
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* @param path numbered sequence string
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* @number frame number
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* @return 0 if OK, -1 if format error.
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*/
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2006-09-04 09:57:47 +00:00
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int av_get_frame_filename(char *buf, int buf_size,
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const char *path, int number);
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2007-03-03 12:23:20 +00:00
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/**
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* Check whether filename actually is a numbered sequence generator.
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*
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* @param filename possible numbered sequence string
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* @return 1 if a valid numbered sequence string, 0 otherwise.
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*/
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2006-09-04 09:57:47 +00:00
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int av_filename_number_test(const char *filename);
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2001-09-24 23:25:28 +00:00
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2007-07-26 22:34:26 +00:00
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/**
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* Generate an SDP for an RTP session.
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*
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* @param ac array of AVFormatContexts describing the RTP streams. If the
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* array is composed by only one context, such context can contain
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* multiple AVStreams (one AVStream per RTP stream). Otherwise,
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* all the contexts in the array (an AVCodecContext per RTP stream)
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* must contain only one AVStream
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2007-08-05 13:44:56 +00:00
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* @param n_files number of AVCodecContexts contained in ac
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* @param buff buffer where the SDP will be stored (must be allocated by
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* the caller
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* @param size the size of the buffer
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* @return 0 if OK. AVERROR_xxx if error.
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2007-07-26 22:34:26 +00:00
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*/
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2007-08-05 13:44:56 +00:00
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int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size);
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2007-07-26 22:34:26 +00:00
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2002-07-24 18:05:26 +00:00
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#ifdef HAVE_AV_CONFIG_H
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2003-09-08 21:20:55 +00:00
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#include "os_support.h"
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2003-06-13 14:22:23 +00:00
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void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
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2003-09-22 20:29:58 +00:00
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#ifdef __GNUC__
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2003-06-13 14:22:23 +00:00
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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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__dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
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} while(0)
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2003-09-22 20:29:58 +00:00
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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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__dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
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} while(0)
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#endif
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2003-06-13 14:22:23 +00:00
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2003-09-08 21:20:55 +00:00
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time_t mktimegm(struct tm *tm);
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2004-08-18 08:15:07 +00:00
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struct tm *brktimegm(time_t secs, struct tm *tm);
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2005-12-17 18:14:38 +00:00
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const char *small_strptime(const char *p, const char *fmt,
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2003-09-08 21:20:55 +00:00
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struct tm *dt);
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2002-07-24 18:05:26 +00:00
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struct in_addr;
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int resolve_host(struct in_addr *sin_addr, const char *hostname);
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void url_split(char *proto, int proto_size,
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2004-08-12 00:09:32 +00:00
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char *authorization, int authorization_size,
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2002-07-24 18:05:26 +00:00
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char *hostname, int hostname_size,
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int *port_ptr,
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char *path, int path_size,
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const char *url);
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2002-11-20 14:54:46 +00:00
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int match_ext(const char *filename, const char *extensions);
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2002-07-24 18:05:26 +00:00
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#endif /* HAVE_AV_CONFIG_H */
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2007-10-17 09:37:46 +00:00
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#endif /* FFMPEG_AVFORMAT_H */
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