seek.h
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1 /*
2  * seek utility functions for use within format handlers
3  *
4  * Copyright (c) 2009 Ivan Schreter
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #ifndef AVFORMAT_SEEK_H
24 #define AVFORMAT_SEEK_H
25 
26 #include "avformat.h"
27 
31 typedef struct AVParserStreamState {
32  // saved members of AVStream
35  int64_t last_IP_pts;
36  int64_t cur_dts;
37  int64_t reference_dts;
38  const uint8_t *cur_ptr;
39  int cur_len;
42 
46 typedef struct AVParserState {
47  int64_t fpos;
48 
49  // saved members of AVFormatContext
54 
55  // saved info for streams
56  int nb_streams;
59 
83  int stream_index,
84  int64_t pos,
85  int64_t min_ts,
86  int64_t ts,
87  int64_t max_ts,
88  int flags);
89 
105 
117 
125 
126 #endif /* AVFORMAT_SEEK_H */
int64_t cur_dts
Definition: seek.h:36
void ff_free_parser_state(AVFormatContext *s, AVParserState *state)
Free previously saved parser state.
Definition: seek.c:498
int64_t last_IP_pts
Definition: seek.h:35
AVPacketList * raw_packet_buffer
raw packet buffer of original state
Definition: seek.h:52
Format I/O context.
Definition: avformat.h:863
AVParserStreamState * stream_states
states of individual streams (array)
Definition: seek.h:57
AVPacket cur_pkt
Definition: seek.h:34
void ff_restore_parser_state(AVFormatContext *s, AVParserState *state)
Restore previously saved parser state and file position.
Definition: seek.c:450
static int flags
Definition: log.c:34
structure to store parser state of one AVStream
Definition: seek.h:31
structure to store parser state of AVFormat
Definition: seek.h:46
struct AVParserStreamState AVParserStreamState
structure to store parser state of one AVStream
Stream structure.
Definition: avformat.h:620
int64_t reference_dts
Definition: seek.h:37
AVStream * cur_st
current stream.
Definition: seek.h:50
int64_t ff_gen_syncpoint_search(AVFormatContext *s, int stream_index, int64_t pos, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
Search for the sync point of all active streams.
Definition: seek.c:244
int nb_streams
number of streams with stored state
Definition: seek.h:56
static uint32_t state
Definition: trasher.c:25
AVCodecParserContext * parser
Definition: seek.h:33
Main libavformat public API header.
const uint8_t * cur_ptr
Definition: seek.h:38
int64_t fpos
file position at the time of call
Definition: seek.h:47
int raw_packet_buffer_remaining_size
remaining space in raw_packet_buffer
Definition: seek.h:53
struct AVParserState AVParserState
structure to store parser state of AVFormat
AVPacketList * packet_buffer
packet buffer of original state
Definition: seek.h:51
int probe_packets
Definition: seek.h:40
AVParserState * ff_store_parser_state(AVFormatContext *s)
Store current parser state and file position.
Definition: seek.c:394