libavformat/avidec.c File Reference

#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/bswap.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "libavutil/avstring.h"
#include "libavutil/avassert.h"
#include "avformat.h"
#include "internal.h"
#include "avi.h"
#include "dv.h"
#include "riff.h"

Go to the source code of this file.

Data Structures

struct  AVIStream
struct  AVIContext

Defines

#define MAX_ODML_DEPTH   1000
#define print_tag(str, tag, size)

Functions

static int avi_load_index (AVFormatContext *s)
static int guess_ni_flag (AVFormatContext *s)
static int get_duration (AVIStream *ast, int len)
static int get_riff (AVFormatContext *s, AVIOContext *pb)
static int read_braindead_odml_indx (AVFormatContext *s, int frame_num)
static void clean_index (AVFormatContext *s)
static int avi_read_tag (AVFormatContext *s, AVStream *st, uint32_t tag, uint32_t size)
static void avi_metadata_creation_time (AVDictionary **metadata, char *date)
static void avi_read_nikon (AVFormatContext *s, uint64_t end)
static int avi_read_header (AVFormatContext *s)
static int read_gab2_sub (AVStream *st, AVPacket *pkt)
static AVStream * get_subtitle_pkt (AVFormatContext *s, AVStream *next_st, AVPacket *pkt)
static int get_stream_idx (int *d)
static int avi_sync (AVFormatContext *s, int exit_early)
static int avi_read_packet (AVFormatContext *s, AVPacket *pkt)
static int avi_read_idx1 (AVFormatContext *s, int size)
static void seek_subtitle (AVStream *st, AVStream *st2, int64_t timestamp)
static int avi_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
static int avi_read_close (AVFormatContext *s)
static int avi_probe (AVProbeData *p)

Variables

static const AVOption options []
static const AVClass demuxer_class
static const char avi_headers [][8]
static const AVMetadataConv avi_metadata_conv []
static const char months [12][4]
AVInputFormat ff_avi_demuxer

Define Documentation

#define MAX_ODML_DEPTH   1000

Definition at line 74 of file avidec.c.

Referenced by read_braindead_odml_indx().

#define print_tag ( str,
tag,
size   ) 

Value:

av_dlog(NULL, "%s: tag=%c%c%c%c size=0x%x\n",       \
           str, tag & 0xff,                             \
           (tag >> 8) & 0xff,                           \
           (tag >> 16) & 0xff,                          \
           (tag >> 24) & 0xff,                          \
           size)

Definition at line 110 of file avidec.c.

Referenced by avi_read_header(), and nsv_parse_NSVs_header().

Function Documentation

static int avi_load_index ( AVFormatContext *  s  )  [static]

Definition at line 1373 of file avidec.c.

Referenced by avi_read_header(), and avi_read_seek().

static void avi_metadata_creation_time ( AVDictionary **  metadata,
char *  date 
) [static]

Definition at line 298 of file avidec.c.

Referenced by avi_read_header().

static int avi_probe ( AVProbeData *  p  )  [static]

Definition at line 1557 of file avidec.c.

static int avi_read_close ( AVFormatContext *  s  )  [static]

Definition at line 1534 of file avidec.c.

static int avi_read_header ( AVFormatContext *  s  )  [static]

Definition at line 353 of file avidec.c.

static int avi_read_idx1 ( AVFormatContext *  s,
int  size 
) [static]

Definition at line 1240 of file avidec.c.

Referenced by avi_load_index().

static void avi_read_nikon ( AVFormatContext *  s,
uint64_t  end 
) [static]

Definition at line 317 of file avidec.c.

Referenced by avi_read_header().

static int avi_read_packet ( AVFormatContext *  s,
AVPacket *  pkt 
) [static]

Definition at line 1041 of file avidec.c.

static int avi_read_seek ( AVFormatContext *  s,
int  stream_index,
int64_t  timestamp,
int  flags 
) [static]

Definition at line 1429 of file avidec.c.

static int avi_read_tag ( AVFormatContext *  s,
AVStream *  st,
uint32_t  tag,
uint32_t  size 
) [static]

Definition at line 274 of file avidec.c.

Referenced by avi_read_header().

static int avi_sync ( AVFormatContext *  s,
int  exit_early 
) [static]

Parameters:
exit_early set to 1 to just gather packet position without making the changes needed to actually read & return the packet

Definition at line 903 of file avidec.c.

Referenced by avi_read_idx1().

static void clean_index ( AVFormatContext *  s  )  [static]

Definition at line 248 of file avidec.c.

Referenced by avi_read_header().

static int get_duration ( AVIStream *  ast,
int  len 
) [inline, static]

Definition at line 118 of file avidec.c.

Referenced by avi_read_idx1(), avi_sync(), microdvd_read_header(), and read_braindead_odml_indx().

static int get_riff ( AVFormatContext *  s,
AVIOContext *  pb 
) [static]

Definition at line 127 of file avidec.c.

Referenced by avi_read_header().

static int get_stream_idx ( int *  d  )  [static]

Definition at line 890 of file avidec.c.

Referenced by avi_sync().

static AVStream* get_subtitle_pkt ( AVFormatContext *  s,
AVStream *  next_st,
AVPacket *  pkt 
) [static]

Definition at line 857 of file avidec.c.

static int guess_ni_flag ( AVFormatContext *  s  )  [static]

Definition at line 1315 of file avidec.c.

Referenced by avi_read_header().

static int read_braindead_odml_indx ( AVFormatContext *  s,
int  frame_num 
) [static]

Definition at line 151 of file avidec.c.

Referenced by avi_read_header().

static int read_gab2_sub ( AVStream *  st,
AVPacket *  pkt 
) [static]

Definition at line 809 of file avidec.c.

static void seek_subtitle ( AVStream *  st,
AVStream *  st2,
int64_t  timestamp 
) [static]

Definition at line 1419 of file avidec.c.

Referenced by avi_read_seek().

Variable Documentation

const char avi_headers[][8] [static]

Initial value:

 {
    { 'R', 'I', 'F', 'F',    'A', 'V', 'I', ' ' },
    { 'R', 'I', 'F', 'F',    'A', 'V', 'I', 'X' },
    { 'R', 'I', 'F', 'F',    'A', 'V', 'I', 0x19},
    { 'O', 'N', '2', ' ',    'O', 'N', '2', 'f' },
    { 'R', 'I', 'F', 'F',    'A', 'M', 'V', ' ' },
    { 0 }
}

Definition at line 93 of file avidec.c.

Referenced by avi_probe(), and get_riff().

const AVMetadataConv avi_metadata_conv[] [static]

Initial value:

 {
    { "strn", "title" },
    { 0 },
}

Definition at line 102 of file avidec.c.

const AVClass demuxer_class [static]

Initial value:

 {
    .class_name = "avi",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_DEMUXER,
}

Definition at line 84 of file avidec.c.

AVInputFormat ff_avi_demuxer

Initial value:

 {
    .name           = "avi",
    .long_name      = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
    .priv_data_size = sizeof(AVIContext),
    .read_probe     = avi_probe,
    .read_header    = avi_read_header,
    .read_packet    = avi_read_packet,
    .read_close     = avi_read_close,
    .read_seek      = avi_read_seek,
    .priv_class = &demuxer_class,
}

Definition at line 1570 of file avidec.c.

const char months[12][4] [static]

Initial value:

 { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
                                    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }

Definition at line 295 of file avidec.c.

Referenced by avi_metadata_creation_time().

const AVOption options[] [static]

Initial value:

 {
    { "use_odml", "use odml index", 0x42, AV_OPT_TYPE_INT, {.i64 = 1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM},
    { NULL },
}

Definition at line 79 of file avidec.c.

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