iff.c File Reference

#include <inttypes.h>
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/dict.h"
#include "libavcodec/bytestream.h"
#include "avformat.h"
#include "id3v2.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	IffDemuxContext
struct	DSDLayoutDesc

Macros
#define	ID_8SVX   MKTAG('8','S','V','X')
#define	ID_16SV   MKTAG('1','6','S','V')
#define	ID_MAUD   MKTAG('M','A','U','D')
#define	ID_MHDR   MKTAG('M','H','D','R')
#define	ID_MDAT   MKTAG('M','D','A','T')
#define	ID_VHDR   MKTAG('V','H','D','R')
#define	ID_ATAK   MKTAG('A','T','A','K')
#define	ID_RLSE   MKTAG('R','L','S','E')
#define	ID_CHAN   MKTAG('C','H','A','N')
#define	ID_PBM   MKTAG('P','B','M',' ')
#define	ID_ILBM   MKTAG('I','L','B','M')
#define	ID_BMHD   MKTAG('B','M','H','D')
#define	ID_DGBL   MKTAG('D','G','B','L')
#define	ID_CAMG   MKTAG('C','A','M','G')
#define	ID_CMAP   MKTAG('C','M','A','P')
#define	ID_ACBM   MKTAG('A','C','B','M')
#define	ID_DEEP   MKTAG('D','E','E','P')
#define	ID_RGB8   MKTAG('R','G','B','8')
#define	ID_RGBN   MKTAG('R','G','B','N')
#define	ID_DSD   MKTAG('D','S','D',' ')
#define	ID_DST   MKTAG('D','S','T',' ')
#define	ID_DSTC   MKTAG('D','S','T','C')
#define	ID_DSTF   MKTAG('D','S','T','F')
#define	ID_FRTE   MKTAG('F','R','T','E')
#define	ID_ANIM   MKTAG('A','N','I','M')
#define	ID_ANHD   MKTAG('A','N','H','D')
#define	ID_DLTA   MKTAG('D','L','T','A')
#define	ID_DPAN   MKTAG('D','P','A','N')
#define	ID_FORM   MKTAG('F','O','R','M')
#define	ID_FRM8   MKTAG('F','R','M','8')
#define	ID_ANNO   MKTAG('A','N','N','O')
#define	ID_AUTH   MKTAG('A','U','T','H')
#define	ID_CHRS   MKTAG('C','H','R','S')
#define	ID_COPYRIGHT   MKTAG('(','c',')',' ')
#define	ID_CSET   MKTAG('C','S','E','T')
#define	ID_FVER   MKTAG('F','V','E','R')
#define	ID_NAME   MKTAG('N','A','M','E')
#define	ID_TEXT   MKTAG('T','E','X','T')
#define	ID_ABIT   MKTAG('A','B','I','T')
#define	ID_BODY   MKTAG('B','O','D','Y')
#define	ID_DBOD   MKTAG('D','B','O','D')
#define	ID_DPEL   MKTAG('D','P','E','L')
#define	ID_DLOC   MKTAG('D','L','O','C')
#define	ID_TVDC   MKTAG('T','V','D','C')
#define	LEFT   2
#define	RIGHT   4
#define	STEREO   6
#define	IFF_EXTRA_VIDEO_SIZE   41
	This number of bytes if added at the beginning of each AVPacket which contain additional information about video properties which has to be shared between demuxer and decoder. More...
#define	DSD_SLFT   MKTAG('S','L','F','T')
#define	DSD_SRGT   MKTAG('S','R','G','T')
#define	DSD_MLFT   MKTAG('M','L','F','T')
#define	DSD_MRGT   MKTAG('M','R','G','T')
#define	DSD_C   MKTAG('C',' ',' ',' ')
#define	DSD_LS   MKTAG('L','S',' ',' ')
#define	DSD_RS   MKTAG('R','S',' ',' ')
#define	DSD_LFE   MKTAG('L','F','E',' ')

Enumerations
enum	svx8_compression_type { COMP_NONE, COMP_FIB, COMP_EXP }

Functions
static int	get_metadata (AVFormatContext *s, const char *const tag, const unsigned data_size)
static int	iff_probe (const AVProbeData *p)
static int	parse_dsd_diin (AVFormatContext *s, AVStream *st, uint64_t eof)
static int	parse_dsd_prop (AVFormatContext *s, AVStream *st, uint64_t eof)
static int	read_dst_frame (AVFormatContext *s, AVPacket *pkt)
static int	iff_read_header (AVFormatContext *s)
static unsigned	get_anim_duration (uint8_t *buf, int size)
static int	iff_read_packet (AVFormatContext *s, AVPacket *pkt)

Variables
static const AVCodecTag	dsd_codec_tags []
static const uint32_t	dsd_stereo [] = { DSD_SLFT, DSD_SRGT }
static const uint32_t	dsd_5point0 [] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS }
static const uint32_t	dsd_5point1 [] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS }
static const DSDLayoutDesc	dsd_channel_layout []
static const AVChannelLayout	dsd_loudspeaker_config []
static const char *	dsd_source_comment []
static const char *	dsd_history_comment []
static const uint8_t	deep_rgb24 [] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8}
static const uint8_t	deep_rgba [] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8}
static const uint8_t	deep_bgra [] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8}
static const uint8_t	deep_argb [] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8}
static const uint8_t	deep_abgr [] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8}
const AVInputFormat	ff_iff_demuxer

Detailed Description

IFF file demuxer by Jaikrishnan Menon for more information on the .iff file format, visit: http://wiki.multimedia.cx/index.php?title=IFF

Definition in file iff.c.

Macro Definition Documentation

ID_8SVX

#define ID_8SVX   MKTAG('8','S','V','X')

Definition at line 42 of file iff.c.

ID_16SV

#define ID_16SV   MKTAG('1','6','S','V')

Definition at line 43 of file iff.c.

ID_MAUD

#define ID_MAUD   MKTAG('M','A','U','D')

Definition at line 44 of file iff.c.

ID_MHDR

#define ID_MHDR   MKTAG('M','H','D','R')

Definition at line 45 of file iff.c.

ID_MDAT

#define ID_MDAT   MKTAG('M','D','A','T')

Definition at line 46 of file iff.c.

ID_VHDR

#define ID_VHDR   MKTAG('V','H','D','R')

Definition at line 47 of file iff.c.

ID_ATAK

#define ID_ATAK   MKTAG('A','T','A','K')

Definition at line 48 of file iff.c.

ID_RLSE

#define ID_RLSE   MKTAG('R','L','S','E')

Definition at line 49 of file iff.c.

ID_CHAN

#define ID_CHAN   MKTAG('C','H','A','N')

Definition at line 50 of file iff.c.

ID_PBM

#define ID_PBM   MKTAG('P','B','M',' ')

Definition at line 51 of file iff.c.

ID_ILBM

#define ID_ILBM   MKTAG('I','L','B','M')

Definition at line 52 of file iff.c.

ID_BMHD

#define ID_BMHD   MKTAG('B','M','H','D')

Definition at line 53 of file iff.c.

ID_DGBL

#define ID_DGBL   MKTAG('D','G','B','L')

Definition at line 54 of file iff.c.

ID_CAMG

#define ID_CAMG   MKTAG('C','A','M','G')

Definition at line 55 of file iff.c.

ID_CMAP

#define ID_CMAP   MKTAG('C','M','A','P')

Definition at line 56 of file iff.c.

ID_ACBM

#define ID_ACBM   MKTAG('A','C','B','M')

Definition at line 57 of file iff.c.

ID_DEEP

#define ID_DEEP   MKTAG('D','E','E','P')

Definition at line 58 of file iff.c.

ID_RGB8

#define ID_RGB8   MKTAG('R','G','B','8')

Definition at line 59 of file iff.c.

ID_RGBN

#define ID_RGBN   MKTAG('R','G','B','N')

Definition at line 60 of file iff.c.

ID_DSD

#define ID_DSD   MKTAG('D','S','D',' ')

Definition at line 61 of file iff.c.

ID_DST

#define ID_DST   MKTAG('D','S','T',' ')

Definition at line 62 of file iff.c.

ID_DSTC

#define ID_DSTC   MKTAG('D','S','T','C')

Definition at line 63 of file iff.c.

ID_DSTF

#define ID_DSTF   MKTAG('D','S','T','F')

Definition at line 64 of file iff.c.

ID_FRTE

#define ID_FRTE   MKTAG('F','R','T','E')

Definition at line 65 of file iff.c.

ID_ANIM

#define ID_ANIM   MKTAG('A','N','I','M')

Definition at line 66 of file iff.c.

ID_ANHD

#define ID_ANHD   MKTAG('A','N','H','D')

Definition at line 67 of file iff.c.

ID_DLTA

#define ID_DLTA   MKTAG('D','L','T','A')

Definition at line 68 of file iff.c.

ID_DPAN

#define ID_DPAN   MKTAG('D','P','A','N')

Definition at line 69 of file iff.c.

ID_FORM

#define ID_FORM   MKTAG('F','O','R','M')

Definition at line 71 of file iff.c.

ID_FRM8

#define ID_FRM8   MKTAG('F','R','M','8')

Definition at line 72 of file iff.c.

ID_ANNO

#define ID_ANNO   MKTAG('A','N','N','O')

Definition at line 73 of file iff.c.

ID_AUTH

#define ID_AUTH   MKTAG('A','U','T','H')

Definition at line 74 of file iff.c.

ID_CHRS

#define ID_CHRS   MKTAG('C','H','R','S')

Definition at line 75 of file iff.c.

ID_COPYRIGHT

#define ID_COPYRIGHT   MKTAG('(','c',')',' ')

Definition at line 76 of file iff.c.

ID_CSET

#define ID_CSET   MKTAG('C','S','E','T')

Definition at line 77 of file iff.c.

ID_FVER

#define ID_FVER   MKTAG('F','V','E','R')

Definition at line 78 of file iff.c.

ID_NAME

#define ID_NAME   MKTAG('N','A','M','E')

Definition at line 79 of file iff.c.

ID_TEXT

#define ID_TEXT   MKTAG('T','E','X','T')

Definition at line 80 of file iff.c.

ID_ABIT

#define ID_ABIT   MKTAG('A','B','I','T')

Definition at line 81 of file iff.c.

ID_BODY

#define ID_BODY   MKTAG('B','O','D','Y')

Definition at line 82 of file iff.c.

ID_DBOD

#define ID_DBOD   MKTAG('D','B','O','D')

Definition at line 83 of file iff.c.

ID_DPEL

#define ID_DPEL   MKTAG('D','P','E','L')

Definition at line 84 of file iff.c.

ID_DLOC

#define ID_DLOC   MKTAG('D','L','O','C')

Definition at line 85 of file iff.c.

ID_TVDC

#define ID_TVDC   MKTAG('T','V','D','C')

Definition at line 86 of file iff.c.

LEFT

#define LEFT   2

Definition at line 88 of file iff.c.

RIGHT

#define RIGHT   4

Definition at line 89 of file iff.c.

STEREO

#define STEREO   6

Definition at line 90 of file iff.c.

IFF_EXTRA_VIDEO_SIZE

#define IFF_EXTRA_VIDEO_SIZE   41

This number of bytes if added at the beginning of each AVPacket which contain additional information about video properties which has to be shared between demuxer and decoder.

This number may change between frames, e.g. the demuxer might set it to smallest possible size of 2 to indicate that there's no extradata changing in this frame.

Definition at line 100 of file iff.c.

DSD_SLFT

#define DSD_SLFT   MKTAG('S','L','F','T')

Definition at line 172 of file iff.c.

DSD_SRGT

#define DSD_SRGT   MKTAG('S','R','G','T')

Definition at line 173 of file iff.c.

DSD_MLFT

#define DSD_MLFT   MKTAG('M','L','F','T')

Definition at line 174 of file iff.c.

DSD_MRGT

#define DSD_MRGT   MKTAG('M','R','G','T')

Definition at line 175 of file iff.c.

DSD_C

#define DSD_C   MKTAG('C',' ',' ',' ')

Definition at line 176 of file iff.c.

DSD_LS

#define DSD_LS   MKTAG('L','S',' ',' ')

Definition at line 177 of file iff.c.

DSD_RS

#define DSD_RS   MKTAG('R','S',' ',' ')

Definition at line 178 of file iff.c.

DSD_LFE

#define DSD_LFE   MKTAG('L','F','E',' ')

Definition at line 179 of file iff.c.

Enumeration Type Documentation

svx8_compression_type

enum svx8_compression_type

Enumerator
COMP_NONE
COMP_FIB
COMP_EXP

Definition at line 102 of file iff.c.

Function Documentation

get_metadata()

static int get_metadata ( AVFormatContext *  s, const char *const  tag, const unsigned  data_size  )

static

Definition at line 127 of file iff.c.

Referenced by iff_read_header(), and parse_dsd_diin().

iff_probe()

static int iff_probe ( const AVProbeData *  p )

static

Definition at line 145 of file iff.c.

parse_dsd_diin()

static int parse_dsd_diin ( AVFormatContext *  s, AVStream *  st, uint64_t  eof  )

static

Definition at line 216 of file iff.c.

Referenced by iff_read_header().

parse_dsd_prop()

static int parse_dsd_prop ( AVFormatContext *  s, AVStream *  st, uint64_t  eof  )

static

Definition at line 249 of file iff.c.

Referenced by iff_read_header().

read_dst_frame()

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

static

Definition at line 353 of file iff.c.

Referenced by iff_read_header(), and iff_read_packet().

iff_read_header()

static int iff_read_header ( AVFormatContext *  s )

static

Definition at line 417 of file iff.c.

get_anim_duration()

static unsigned get_anim_duration ( uint8_t *  buf, int  size  )

static

Definition at line 807 of file iff.c.

Referenced by iff_read_packet().

iff_read_packet()

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

static

Definition at line 829 of file iff.c.

Variable Documentation

dsd_codec_tags

const AVCodecTag dsd_codec_tags[]

static

Initial value:

= {
    { AV_CODEC_ID_DSD_MSBF, ID_DSD },
    { AV_CODEC_ID_DST,      ID_DST },
    { AV_CODEC_ID_NONE, 0 },
}

Definition at line 165 of file iff.c.

Referenced by parse_dsd_prop().

dsd_stereo

const uint32_t dsd_stereo[] = { DSD_SLFT, DSD_SRGT }

static

Definition at line 181 of file iff.c.

dsd_5point0

const uint32_t dsd_5point0[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LS, DSD_RS }

static

Definition at line 182 of file iff.c.

dsd_5point1

const uint32_t dsd_5point1[] = { DSD_MLFT, DSD_MRGT, DSD_C, DSD_LFE, DSD_LS, DSD_RS }

static

Definition at line 183 of file iff.c.

dsd_channel_layout

const DSDLayoutDesc dsd_channel_layout[]

static

Initial value:

= {
    { AV_CHANNEL_LAYOUT_STEREO,  dsd_stereo },
    { AV_CHANNEL_LAYOUT_5POINT0, dsd_5point0 },
    { AV_CHANNEL_LAYOUT_5POINT1, dsd_5point1 },
}

Definition at line 190 of file iff.c.

Referenced by parse_dsd_prop().

dsd_loudspeaker_config

const AVChannelLayout dsd_loudspeaker_config[]

static

Initial value:

= {
    AV_CHANNEL_LAYOUT_STEREO,
    { 0 }, { 0 },
    AV_CHANNEL_LAYOUT_5POINT0, AV_CHANNEL_LAYOUT_5POINT1,
}

Definition at line 196 of file iff.c.

Referenced by parse_dsd_prop().

dsd_source_comment

const char* dsd_source_comment[]

static

Initial value:

= {
    "dsd_source_comment",
    "analogue_source_comment",
    "pcm_source_comment",
}

Definition at line 202 of file iff.c.

Referenced by iff_read_header().

dsd_history_comment

const char* dsd_history_comment[]

static

Initial value:

= {
    "general_remark",
    "operator_name",
    "creating_machine",
    "timezone",
    "file_revision"
}

Definition at line 208 of file iff.c.

Referenced by iff_read_header().

deep_rgb24

const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8}

static

Definition at line 411 of file iff.c.

Referenced by iff_read_header().

deep_rgba

const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8}

static

Definition at line 412 of file iff.c.

Referenced by iff_read_header().

deep_bgra

const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8}

static

Definition at line 413 of file iff.c.

Referenced by iff_read_header().

deep_argb

const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8}

static

Definition at line 414 of file iff.c.

Referenced by iff_read_header().

deep_abgr

const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8}

static

Definition at line 415 of file iff.c.

Referenced by iff_read_header().

ff_iff_demuxer

const AVInputFormat ff_iff_demuxer

Initial value:

= {
    .name           = "iff",
    .long_name      = NULL_IF_CONFIG_SMALL("IFF (Interchange File Format)"),
    .priv_data_size = sizeof(IffDemuxContext),
    .read_probe     = iff_probe,
    .read_header    = iff_read_header,
    .read_packet    = iff_read_packet,
    .flags          = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK,
}

Definition at line 901 of file iff.c.