FFmpeg: libavformat/nsvdec.c File Reference

FFmpeg

libavformat

Data Structures | Macros | Enumerations | Functions | Variables

nsvdec.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/mathematics.h"
#include "avformat.h"
#include "internal.h"
#include "libavutil/dict.h"
#include "libavutil/intreadwrite.h"

Go to the source code of this file.

Data Structures

struct NSVStream

struct NSVContext

Macros

#define NSV_MAX_RESYNC (500*1024)

#define NSV_MAX_RESYNC_TRIES 300

#define T_NSVF MKTAG('N', 'S', 'V', 'f') /* file header */

#define T_NSVS MKTAG('N', 'S', 'V', 's') /* chunk header */

#define T_TOC2 MKTAG('T', 'O', 'C', '2') /* extra index marker */

#define T_NONE MKTAG('N', 'O', 'N', 'E') /* null a/v 4CC */

#define T_SUBT MKTAG('S', 'U', 'B', 'T') /* subtitle aux data */

#define T_ASYN MKTAG('A', 'S', 'Y', 'N') /* async a/v aux marker */

#define T_KEYF MKTAG('K', 'E', 'Y', 'F') /* video keyframe aux marker (addition) */

#define TB_NSVF MKBETAG('N', 'S', 'V', 'f')

#define TB_NSVS MKBETAG('N', 'S', 'V', 's')

#define NSV_ST_VIDEO 0

#define NSV_ST_AUDIO 1

#define NSV_ST_SUBT 2

#define print_tag(str, tag, size)

Enumerations

enum NSVStatus {
NSV_UNSYNC, NSV_FOUND_NSVF, NSV_HAS_READ_NSVF, NSV_FOUND_NSVS,
NSV_HAS_READ_NSVS, NSV_FOUND_BEEF, NSV_GOT_VIDEO, NSV_GOT_AUDIO
}

Functions

static int nsv_read_chunk (AVFormatContext *s, int fill_header)

static int nsv_resync (AVFormatContext *s)

static int nsv_parse_NSVf_header (AVFormatContext *s)

static int nsv_parse_NSVs_header (AVFormatContext *s)

static int nsv_read_header (AVFormatContext *s)

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

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

static int nsv_read_close (AVFormatContext *s)

static int nsv_probe (AVProbeData *p)

Variables

static const AVCodecTag nsv_codec_video_tags []

static const AVCodecTag nsv_codec_audio_tags []

AVInputFormat ff_nsv_demuxer

Macro Definition Documentation

#define NSV_MAX_RESYNC (500*1024)

Definition at line 34 of file nsvdec.c.

Referenced by nsv_resync().

#define NSV_MAX_RESYNC_TRIES 300

Definition at line 35 of file nsvdec.c.

Referenced by nsv_read_chunk(), and nsv_read_header().

#define T_NSVF MKTAG('N', 'S', 'V', 'f') /* file header */

Definition at line 126 of file nsvdec.c.

#define T_NSVS MKTAG('N', 'S', 'V', 's') /* chunk header */

Definition at line 127 of file nsvdec.c.

#define T_TOC2 MKTAG('T', 'O', 'C', '2') /* extra index marker */

Definition at line 128 of file nsvdec.c.

#define T_NONE MKTAG('N', 'O', 'N', 'E') /* null a/v 4CC */

Definition at line 129 of file nsvdec.c.

Referenced by nsv_parse_NSVs_header().

#define T_SUBT MKTAG('S', 'U', 'B', 'T') /* subtitle aux data */

Definition at line 130 of file nsvdec.c.

#define T_ASYN MKTAG('A', 'S', 'Y', 'N') /* async a/v aux marker */

Definition at line 131 of file nsvdec.c.

#define T_KEYF MKTAG('K', 'E', 'Y', 'F') /* video keyframe aux marker (addition) */

Definition at line 132 of file nsvdec.c.

#define TB_NSVF MKBETAG('N', 'S', 'V', 'f')

Definition at line 134 of file nsvdec.c.

Referenced by nsv_resync().

#define TB_NSVS MKBETAG('N', 'S', 'V', 's')

Definition at line 135 of file nsvdec.c.

#define NSV_ST_VIDEO 0

Definition at line 138 of file nsvdec.c.

Referenced by nsv_parse_NSVs_header(), and nsv_read_chunk().

#define NSV_ST_AUDIO 1

Definition at line 139 of file nsvdec.c.

Referenced by nsv_parse_NSVs_header(), and nsv_read_chunk().

#define NSV_ST_SUBT 2

Definition at line 140 of file nsvdec.c.

#define print_tag ( str,

tag,

size

)

Value:

av_dlog(NULL, "%s: tag=%c%c%c%c\n", \

str, tag & 0xff, \

(tag >> 8) & 0xff, \

(tag >> 16) & 0xff, \

(tag >> 24) & 0xff);

Definition at line 215 of file nsvdec.c.

Referenced by nsv_parse_NSVs_header().

Enumeration Type Documentation

enum NSVStatus

Enumerator:: NSV_UNSYNC

NSV_FOUND_NSVF

NSV_HAS_READ_NSVF

NSV_FOUND_NSVS

NSV_HAS_READ_NSVS

NSV_FOUND_BEEF

NSV_GOT_VIDEO

NSV_GOT_AUDIO

Definition at line 142 of file nsvdec.c.

Function Documentation

static int nsv_read_chunk ( AVFormatContext * s,

int fill_header

)

static

Definition at line 530 of file nsvdec.c.

Referenced by nsv_read_header(), and nsv_read_packet().

static int nsv_resync ( AVFormatContext * s )

static

Definition at line 223 of file nsvdec.c.

Referenced by nsv_read_chunk(), and nsv_read_header().

static int nsv_parse_NSVf_header ( AVFormatContext * s )

static

Definition at line 268 of file nsvdec.c.

Referenced by nsv_read_header().

static int nsv_parse_NSVs_header ( AVFormatContext * s )

static

Definition at line 377 of file nsvdec.c.

Referenced by nsv_read_chunk(), and nsv_read_header().

static int nsv_read_header ( AVFormatContext * s )

static

Definition at line 494 of file nsvdec.c.

static int nsv_read_packet ( AVFormatContext * s,

AVPacket * pkt

)

static

Definition at line 662 of file nsvdec.c.

static int nsv_read_seek ( AVFormatContext * s,

int stream_index,

int64_t timestamp,

int flags

)

static

Definition at line 690 of file nsvdec.c.

static int nsv_read_close ( AVFormatContext * s )

static

Definition at line 709 of file nsvdec.c.

static int nsv_probe ( AVProbeData * p )

static

Definition at line 722 of file nsvdec.c.

Variable Documentation

const AVCodecTag nsv_codec_video_tags[]

static

Initial value:

= {

{ AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', ' ') },

{ AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '0') },

{ AV_CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },

{ AV_CODEC_ID_VP5, MKTAG('V', 'P', '5', ' ') },

{ AV_CODEC_ID_VP5, MKTAG('V', 'P', '5', '0') },

{ AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', ' ') },

{ AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '0') },

{ AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '1') },

{ AV_CODEC_ID_VP6, MKTAG('V', 'P', '6', '2') },

{ AV_CODEC_ID_VP8, MKTAG('V', 'P', '8', '0') },

{ AV_CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },

{ AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', '3') },

{ AV_CODEC_ID_NONE, 0 },

}

Definition at line 182 of file nsvdec.c.

const AVCodecTag nsv_codec_audio_tags[]

static

Initial value:

= {

{ AV_CODEC_ID_MP3, MKTAG('M', 'P', '3', ' ') },

{ AV_CODEC_ID_AAC, MKTAG('A', 'A', 'C', ' ') },

{ AV_CODEC_ID_AAC, MKTAG('A', 'A', 'C', 'P') },

{ AV_CODEC_ID_AAC, MKTAG('V', 'L', 'B', ' ') },

{ AV_CODEC_ID_SPEEX, MKTAG('S', 'P', 'X', ' ') },

{ AV_CODEC_ID_PCM_U16LE, MKTAG('P', 'C', 'M', ' ') },

{ AV_CODEC_ID_NONE, 0 },

}

Definition at line 202 of file nsvdec.c.

AVInputFormat ff_nsv_demuxer

Initial value:

= {

.name = "nsv",

.long_name = NULL_IF_CONFIG_SMALL("Nullsoft Streaming Video"),

.priv_data_size = sizeof(NSVContext),

.read_probe = nsv_probe,

.read_header = nsv_read_header,

.read_packet = nsv_read_packet,

.read_close = nsv_read_close,

.read_seek = nsv_read_seek,

}

Definition at line 754 of file nsvdec.c.

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