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"

Include dependency graph for avidec.c:

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)

Typedefs
typedef struct AVIStream	AVIStream

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

Macro Definition Documentation

#define MAX_ODML_DEPTH   1000

Definition at line 75 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 111 of file avidec.c.

Referenced by avi_read_header().

Typedef Documentation

typedef struct AVIStream AVIStream

Function Documentation

static int avi_load_index ( AVFormatContext *  s )

static

Definition at line 1406 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 299 of file avidec.c.

Referenced by avi_read_header().

static int avi_probe ( AVProbeData *  p )

static

Definition at line 1591 of file avidec.c.

static int avi_read_close ( AVFormatContext *  s )

static

Definition at line 1568 of file avidec.c.

static int avi_read_header ( AVFormatContext *  s )

static

Definition at line 354 of file avidec.c.

static int avi_read_idx1 ( AVFormatContext *  s, int  size  )

static

Definition at line 1269 of file avidec.c.

Referenced by avi_load_index().

static void avi_read_nikon ( AVFormatContext *  s, uint64_t  end  )

static

Definition at line 318 of file avidec.c.

Referenced by avi_read_header().

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

static

Definition at line 1061 of file avidec.c.

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

static

Definition at line 1462 of file avidec.c.

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

static

Definition at line 275 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 924 of file avidec.c.

Referenced by avi_read_idx1(), and avi_read_packet().

static void clean_index ( AVFormatContext *  s )

static

Definition at line 249 of file avidec.c.

Referenced by avi_read_header().

static int get_duration ( AVIStream *  ast, int  len  )

inlinestatic

Definition at line 119 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 128 of file avidec.c.

Referenced by avi_read_header().

static int get_stream_idx ( int *  d )

static

Definition at line 911 of file avidec.c.

Referenced by avi_sync().

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

static

Definition at line 878 of file avidec.c.

Referenced by avi_read_packet().

static int guess_ni_flag ( AVFormatContext *  s )

static

Definition at line 1348 of file avidec.c.

Referenced by avi_read_header().

static int read_braindead_odml_indx ( AVFormatContext *  s, int  frame_num  )

static

Definition at line 152 of file avidec.c.

Referenced by avi_read_header().

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

static

Definition at line 830 of file avidec.c.

Referenced by avi_read_packet().

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

static

Definition at line 1452 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 94 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 103 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 85 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 1604 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 296 of file avidec.c.

Referenced by avi_metadata_creation_time().

const AVOption options[]

static

Initial value:

= {
    { "use_odml", "use odml index", offsetof(AVIContext, use_odml), AV_OPT_TYPE_INT, {.i64 = 1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM},
    { NULL },
}

Definition at line 80 of file avidec.c.