vividas.c File Reference

Vividas VIV (.viv) file demuxer. More...

#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "avio_internal.h"
#include "avformat.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	VIV_SB_block
struct	VIV_SB_entry
struct	VIV_AudioSubpacket
struct	VividasDemuxContext

Macros
#define	MAX_AUDIO_SUBPACKETS   100

Functions
static int	viv_probe (const AVProbeData *p)
static uint32_t	decode_key (uint8_t *buf)
static void	put_v (uint8_t *p, unsigned v)
static unsigned	recover_key (unsigned char sample[4], unsigned expected_size)
static void	xor_block (void *p1, void *p2, unsigned size, int key, unsigned *key_ptr)
static void	decode_block (uint8_t *src, uint8_t *dest, unsigned size, uint32_t key, uint32_t *key_ptr, int align)
static uint32_t	get_v (uint8_t *p, int len)
static uint8_t *	read_vblock (AVIOContext *src, uint32_t *size, uint32_t key, uint32_t *k2, int align)
static uint8_t *	read_sb_block (AVIOContext *src, unsigned *size, uint32_t *key, unsigned expected_size)
static int	track_header (VividasDemuxContext *viv, AVFormatContext *s, uint8_t *buf, int size)
static int	track_index (VividasDemuxContext *viv, AVFormatContext *s, uint8_t *buf, unsigned size)
static void	load_sb_block (AVFormatContext *s, VividasDemuxContext *viv, unsigned expected_size)
static int	viv_read_header (AVFormatContext *s)
static int	viv_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	viv_read_close (AVFormatContext *s)
static int	viv_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp, int flags)

Variables
static const uint8_t	keybits [32]
const AVInputFormat	ff_vividas_demuxer

Detailed Description

Vividas VIV (.viv) file demuxer.

Author

Andrzej Szombierski [qq at kuku eu org] (2010-07)

See also

http://wiki.multimedia.cx/index.php?title=Vividas_VIV

Definition in file vividas.c.

Macro Definition Documentation

MAX_AUDIO_SUBPACKETS

#define MAX_AUDIO_SUBPACKETS   100

Definition at line 37 of file vividas.c.

Function Documentation

viv_probe()

static int viv_probe ( const AVProbeData *  p )

static

Definition at line 75 of file vividas.c.

decode_key()

static uint32_t decode_key ( uint8_t *  buf )

static

Definition at line 90 of file vividas.c.

Referenced by viv_read_header().

put_v()

static void put_v ( uint8_t *  p, unsigned  v  )

static

Definition at line 102 of file vividas.c.

Referenced by recover_key().

recover_key()

static unsigned recover_key ( unsigned char  sample[4], unsigned  expected_size  )

static

Definition at line 114 of file vividas.c.

Referenced by read_sb_block().

xor_block()

static void xor_block ( void *  p1, void *  p2, unsigned  size, int  key, unsigned *  key_ptr  )

static

Definition at line 123 of file vividas.c.

Referenced by decode_block().

decode_block()

static void decode_block ( uint8_t *  src, uint8_t *  dest, unsigned  size, uint32_t  key, uint32_t *  key_ptr, int  align  )

static

Definition at line 142 of file vividas.c.

Referenced by read_sb_block(), and read_vblock().

get_v()

static uint32_t get_v ( uint8_t *  p, int  len  )

static

Definition at line 182 of file vividas.c.

Referenced by read_sb_block(), and read_vblock().

read_vblock()

static uint8_t* read_vblock ( AVIOContext *  src, uint32_t *  size, uint32_t  key, uint32_t *  k2, int  align  )

static

Definition at line 197 of file vividas.c.

Referenced by viv_read_header().

read_sb_block()

static uint8_t* read_sb_block ( AVIOContext *  src, unsigned *  size, uint32_t *  key, unsigned  expected_size  )

static

Definition at line 232 of file vividas.c.

Referenced by load_sb_block().

track_header()

static int track_header ( VividasDemuxContext *  viv, AVFormatContext *  s, uint8_t *  buf, int  size  )

static

Definition at line 280 of file vividas.c.

Referenced by viv_read_header().

track_index()

static int track_index ( VividasDemuxContext *  viv, AVFormatContext *  s, uint8_t *  buf, unsigned  size  )

static

Definition at line 435 of file vividas.c.

Referenced by ff_mov_add_hinted_packet(), open_cpl_tracks(), open_virtual_track(), and viv_read_header().

load_sb_block()

static void load_sb_block ( AVFormatContext *  s, VividasDemuxContext *  viv, unsigned  expected_size  )

static

Definition at line 492 of file vividas.c.

Referenced by viv_read_header(), viv_read_packet(), and viv_read_seek().

viv_read_header()

static int viv_read_header ( AVFormatContext *  s )

static

Definition at line 536 of file vividas.c.

viv_read_packet()

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

static

Definition at line 631 of file vividas.c.

viv_read_close()

static int viv_read_close ( AVFormatContext *  s )

static

Definition at line 736 of file vividas.c.

viv_read_seek()

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

static

Definition at line 748 of file vividas.c.

Variable Documentation

keybits

const uint8_t keybits[32]

static

Initial value:

= {
 20,  52, 111,  10,  27,  71, 142,  53,
 82, 138,   1,  78,  86, 121, 183,  85,
105, 152,  39, 140, 172,  11,  64, 144,
155,   6,  71, 163, 186,  49, 126,  43,
}

Definition at line 83 of file vividas.c.

Referenced by decode_key().

ff_vividas_demuxer

const AVInputFormat ff_vividas_demuxer

Initial value:

= {
    .name           = "vividas",
    .long_name      = NULL_IF_CONFIG_SMALL("Vividas VIV"),
    .priv_data_size = sizeof(VividasDemuxContext),
    .flags_internal = FF_FMT_INIT_CLEANUP,
    .read_probe     = viv_probe,
    .read_header    = viv_read_header,
    .read_packet    = viv_read_packet,
    .read_close     = viv_read_close,
    .read_seek      = viv_read_seek,
}

Definition at line 784 of file vividas.c.