nuv.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/channel_layout.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/intfloat.h"
#include "avformat.h"
#include "avio_internal.h"
#include "demux.h"
#include "internal.h"
#include "riff.h"

Go to the source code of this file.

Data Structures
struct	NUVContext

Macros
#define	PKTSIZE(s)
	little macro to sanitize packet size
#define	HDRSIZE   12

Enumerations
enum	nuv_frametype {   NUV_VIDEO = 'V' , NUV_EXTRADATA = 'D' , NUV_AUDIO = 'A' , NUV_SEEKP = 'R' ,   NUV_MYTHEXT = 'X' }

Functions
static int	nuv_probe (const AVProbeData *p)
static int	get_codec_data (AVFormatContext *s, AVIOContext *pb, AVStream *vst, AVStream *ast, int myth)
	read until we found all data needed for decoding
static int	nuv_header (AVFormatContext *s)
static int	nuv_packet (AVFormatContext *s, AVPacket *pkt)
static int	nuv_resync (AVFormatContext *s, int64_t pos_limit)
	looks for the string RTjjjjjjjjjj in the stream too resync reading
static int64_t	nuv_read_dts (AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
	attempts to read a timestamp from stream at the given stream position

Variables
static const AVCodecTag	nuv_audio_tags []
const FFInputFormat	ff_nuv_demuxer

Macro Definition Documentation

PKTSIZE

#define PKTSIZE

(

s

)

Value:

(s &  0xffffff)

little macro to sanitize packet size

Definition at line 63 of file nuv.c.

Referenced by get_codec_data(), nuv_packet(), and nuv_read_dts().

HDRSIZE

#define HDRSIZE   12

Definition at line 252 of file nuv.c.

Referenced by nuv_packet(), and nuv_read_dts().

Enumeration Type Documentation

nuv_frametype

enum nuv_frametype

Enumerator
NUV_VIDEO
NUV_EXTRADATA
NUV_AUDIO
NUV_SEEKP
NUV_MYTHEXT

Definition at line 45 of file nuv.c.

Function Documentation

nuv_probe()

static int nuv_probe ( const AVProbeData * p )

static

Definition at line 53 of file nuv.c.

get_codec_data()

static int get_codec_data ( AVFormatContext * s, AVIOContext * pb, AVStream * vst, AVStream * ast, int myth )

static

read until we found all data needed for decoding

Parameters

vst	video stream of which to change parameters
ast	video stream of which to change parameters
myth	set if this is a MythTVVideo format file

Returns

0 or AVERROR code

Definition at line 72 of file nuv.c.

Referenced by nuv_header().

nuv_header()

static int nuv_header ( AVFormatContext * s )

static

Definition at line 160 of file nuv.c.

nuv_packet()

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

static

Definition at line 254 of file nuv.c.

nuv_resync()

static int nuv_resync ( AVFormatContext * s, int64_t pos_limit )

static

looks for the string RTjjjjjjjjjj in the stream too resync reading

Returns

1 if the syncword is found 0 otherwise.

Definition at line 332 of file nuv.c.

Referenced by nuv_read_dts().

nuv_read_dts()

static int64_t nuv_read_dts ( AVFormatContext * s, int stream_index, int64_t * ppos, int64_t pos_limit )

static

attempts to read a timestamp from stream at the given stream position

Returns

timestamp if successful and AV_NOPTS_VALUE if failure

Definition at line 349 of file nuv.c.

Variable Documentation

nuv_audio_tags

const AVCodecTag nuv_audio_tags[]

static

Initial value:

= {
    { AV_CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
    { AV_CODEC_ID_MP3,       MKTAG('L', 'A', 'M', 'E') },
    { AV_CODEC_ID_NONE,      0 },
}

Definition at line 33 of file nuv.c.

Referenced by get_codec_data().

ff_nuv_demuxer

const FFInputFormat ff_nuv_demuxer

Initial value:

= {
    .p.name         = "nuv",
    .p.long_name    = NULL_IF_CONFIG_SMALL("NuppelVideo"),
    .p.flags        = AVFMT_GENERIC_INDEX,
    .priv_data_size = sizeof(NUVContext),
    .read_probe     = nuv_probe,
    .read_header    = nuv_header,
    .read_packet    = nuv_packet,
    .read_timestamp = nuv_read_dts,
}

Definition at line 404 of file nuv.c.