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Data Structures | Macros | Functions | Variables
avidec.c File Reference
#include <inttypes.h>
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bswap.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "avformat.h"
#include "avi.h"
#include "dv.h"
#include "internal.h"
#include "isom.h"
#include "riff.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/exif.h"
#include "libavcodec/internal.h"

Go to the source code of this file.

Data Structures

struct  AVIStream
 
struct  AVIContext
 

Macros

#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_extract_stream_metadata (AVFormatContext *s, AVStream *st)
 
static int calculate_bitrate (AVFormatContext *s)
 
static int avi_read_header (AVFormatContext *s)
 
static int read_gab2_sub (AVFormatContext *s, AVStream *st, AVPacket *pkt)
 
static AVStream * get_subtitle_pkt (AVFormatContext *s, AVStream *next_st, AVPacket *pkt)
 
static int get_stream_idx (const unsigned *d)
 
static int avi_sync (AVFormatContext *s, int exit_early)
 
static int ni_prepare_read (AVFormatContext *s)
 
static int avi_read_packet (AVFormatContext *s, AVPacket *pkt)
 
static int avi_read_idx1 (AVFormatContext *s, int size)
 
static int check_stream_max_drift (AVFormatContext *s)
 
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
 

Macro Definition Documentation

#define MAX_ODML_DEPTH   1000

Definition at line 84 of file avidec.c.

Referenced by read_braindead_odml_indx().

#define print_tag (   str,
  tag,
  size 
)
Value:
av_log(NULL, AV_LOG_TRACE, "pos:%"PRIX64" %s: tag=%c%c%c%c size=0x%x\n", \
avio_tell(pb), str, tag & 0xff, \
(tag >> 8) & 0xff, \
(tag >> 16) & 0xff, \
(tag >> 24) & 0xff, \
size)
NULL
#define NULL
Definition: coverity.c:32
AV_LOG_TRACE
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
tag
uint32_t tag
Definition: movenc.c:1382
size
ptrdiff_t size
Definition: opengl_enc.c:101
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28

Definition at line 120 of file avidec.c.

Referenced by avi_read_header().

Function Documentation

static int avi_load_index ( AVFormatContext *  s)
static

Definition at line 1735 of file avidec.c.

Referenced by avi_read_header(), and avi_read_seek().

static int guess_ni_flag ( AVFormatContext *  s)
static

Definition at line 1693 of file avidec.c.

Referenced by avi_read_header().

static int get_duration ( AVIStream *  ast,
int  len 
)
inlinestatic

Definition at line 128 of file avidec.c.

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

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

Definition at line 138 of file avidec.c.

Referenced by avi_read_header().

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

Definition at line 163 of file avidec.c.

Referenced by avi_read_header().

static void clean_index ( AVFormatContext *  s)
static

Definition at line 271 of file avidec.c.

Referenced by avi_read_header().

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

Definition at line 299 of file avidec.c.

Referenced by avi_read_header().

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

Definition at line 326 of file avidec.c.

Referenced by avi_read_header().

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

Definition at line 345 of file avidec.c.

Referenced by avi_read_header().

static int avi_extract_stream_metadata ( AVFormatContext *  s,
AVStream *  st 
)
static

Definition at line 388 of file avidec.c.

Referenced by avi_read_header().

static int calculate_bitrate ( AVFormatContext *  s)
static

Definition at line 426 of file avidec.c.

Referenced by avi_read_header().

static int avi_read_header ( AVFormatContext *  s)
static

Definition at line 470 of file avidec.c.

static int read_gab2_sub ( AVFormatContext *  s,
AVStream *  st,
AVPacket *  pkt 
)
static

Definition at line 1062 of file avidec.c.

Referenced by avi_read_packet().

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

Definition at line 1128 of file avidec.c.

Referenced by avi_read_packet().

static int get_stream_idx ( const unsigned *  d)
static

Definition at line 1162 of file avidec.c.

Referenced by avi_sync(), and guess_ni_flag().

static int avi_sync ( AVFormatContext *  s,
int  exit_early 
)
static
Parameters
exit_earlyset to 1 to just gather packet position without making the changes needed to actually read & return the packet

Definition at line 1176 of file avidec.c.

Referenced by avi_read_idx1(), and avi_read_packet().

static int ni_prepare_read ( AVFormatContext *  s)
static

Definition at line 1324 of file avidec.c.

Referenced by avi_read_packet().

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

Definition at line 1393 of file avidec.c.

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

Definition at line 1550 of file avidec.c.

Referenced by avi_load_index().

static int check_stream_max_drift ( AVFormatContext *  s)
static

Definition at line 1638 of file avidec.c.

Referenced by guess_ni_flag().

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

Definition at line 1782 of file avidec.c.

Referenced by avi_read_seek().

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

Definition at line 1792 of file avidec.c.

static int avi_read_close ( AVFormatContext *  s)
static

Definition at line 1909 of file avidec.c.

static int avi_probe ( AVProbeData *  p)
static

Definition at line 1932 of file avidec.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{ "use_odml", "use odml index", 0x42, AV_OPT_TYPE_BOOL, {.i64 = 1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM},
{ NULL },
}
NULL
#define NULL
Definition: coverity.c:32
AV_OPT_TYPE_BOOL
Definition: opt.h:239
AV_OPT_FLAG_DECODING_PARAM
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
Definition: opt.h:276

Definition at line 89 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,
}
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
av_default_item_name
av_default_item_name
Definition: libopenh264enc.c:78
options
static const AVOption options[]
Definition: avidec.c:89

Definition at line 94 of file avidec.c.

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 103 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 112 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 323 of file avidec.c.

Referenced by avi_metadata_creation_time().

AVInputFormat ff_avi_demuxer
Initial value:
= {
.name = "avi",
.long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
.priv_data_size = sizeof(AVIContext),
.extensions = "avi",
.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,
}
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
avi_read_close
static int avi_read_close(AVFormatContext *s)
Definition: avidec.c:1909
read_close
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
read_probe
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
avi_read_header
static int avi_read_header(AVFormatContext *s)
Definition: avidec.c:470
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:514
read_packet
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
avi_read_packet
static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: avidec.c:1393
avi_probe
static int avi_probe(AVProbeData *p)
Definition: avidec.c:1932
demuxer_class
static const AVClass demuxer_class
Definition: avidec.c:94
avi_read_seek
static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: avidec.c:1792

Definition at line 1945 of file avidec.c.

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