dv.c File Reference

#include <time.h>
#include "avformat.h"
#include "internal.h"
#include "libavcodec/dv_profile.h"
#include "libavcodec/dv.h"
#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/timecode.h"
#include "dv.h"
#include "libavutil/avassert.h"

Go to the source code of this file.

Data Structures
struct	DVPacket
	For DV, one packet corresponds exactly to one frame. More...
struct	DVDemuxContext
struct	RawDVContext

Macros
#define	PARTIAL_FRAME_SIZE   (3 * 80)

Functions
static uint16_t	dv_audio_12to16 (uint16_t sample)
static const uint8_t *	dv_extract_pack (const uint8_t *frame, enum dv_pack_type t)
static int	dv_extract_audio (const uint8_t *frame, uint8_t **ppcm, const AVDVProfile *sys)
static int	dv_extract_audio_info (DVDemuxContext *c, const uint8_t *frame)
static int	dv_extract_video_info (DVDemuxContext *c, const uint8_t *frame)
static int	dv_extract_timecode (DVDemuxContext *c, const uint8_t *frame, char *tc)
static int	dv_init_demux (AVFormatContext *s, DVDemuxContext *c)
DVDemuxContext *	avpriv_dv_init_demux (AVFormatContext *s)
int	avpriv_dv_get_packet (DVDemuxContext *c, AVPacket *pkt)
int	avpriv_dv_produce_packet (DVDemuxContext *c, AVPacket *pkt, uint8_t *buf, int buf_size, int64_t pos)
static int64_t	dv_frame_offset (AVFormatContext *s, DVDemuxContext *c, int64_t timestamp, int flags)
void	ff_dv_offset_reset (DVDemuxContext *c, int64_t frame_offset)
static int	dv_read_timecode (AVFormatContext *s)
static int	dv_read_header (AVFormatContext *s)
static int	dv_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	dv_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
static int	dv_probe (const AVProbeData *p)

Variables
static const int	dv_audio_frequency [3]
const AVInputFormat	ff_dv_demuxer

Macro Definition Documentation

PARTIAL_FRAME_SIZE

#define PARTIAL_FRAME_SIZE   (3 * 80)

Function Documentation

dv_audio_12to16()

static uint16_t dv_audio_12to16 ( uint16_t  sample )

inlinestatic

Definition at line 64 of file dv.c.

Referenced by dv_extract_audio().

dv_extract_pack()

static const uint8_t* dv_extract_pack ( const uint8_t *  frame, enum dv_pack_type  t  )

static

Definition at line 84 of file dv.c.

Referenced by dv_extract_audio(), dv_extract_audio_info(), dv_extract_timecode(), and dv_extract_video_info().

dv_extract_audio()

static int dv_extract_audio ( const uint8_t *  frame, uint8_t **  ppcm, const AVDVProfile *  sys  )

static

Definition at line 128 of file dv.c.

Referenced by avpriv_dv_produce_packet().

dv_extract_audio_info()

static int dv_extract_audio_info ( DVDemuxContext *  c, const uint8_t *  frame  )

static

Definition at line 231 of file dv.c.

Referenced by avpriv_dv_produce_packet().

dv_extract_video_info()

static int dv_extract_video_info ( DVDemuxContext *  c, const uint8_t *  frame  )

static

Definition at line 292 of file dv.c.

Referenced by avpriv_dv_produce_packet().

dv_extract_timecode()

static int dv_extract_timecode ( DVDemuxContext *  c, const uint8_t *  frame, char *  tc  )

static

Definition at line 316 of file dv.c.

Referenced by dv_read_timecode().

dv_init_demux()

static int dv_init_demux ( AVFormatContext *  s, DVDemuxContext *  c  )

static

Definition at line 334 of file dv.c.

Referenced by avpriv_dv_init_demux(), and dv_read_header().

avpriv_dv_init_demux()

DVDemuxContext* avpriv_dv_init_demux

(

AVFormatContext *

s

)

Definition at line 349 of file dv.c.

Referenced by avi_read_header(), iec61883_read_header(), and mov_finalize_stsd_codec().

avpriv_dv_get_packet()

int avpriv_dv_get_packet	(	DVDemuxContext *	c,
		AVPacket *	pkt
	)

Definition at line 365 of file dv.c.

Referenced by avi_read_packet(), dv_read_packet(), iec61883_parse_queue_dv(), and mov_read_packet().

avpriv_dv_produce_packet()

int avpriv_dv_produce_packet	(	DVDemuxContext *	c,
		AVPacket *	pkt,
		uint8_t *	buf,
		int	buf_size,
		int64_t	pos
	)

Definition at line 388 of file dv.c.

Referenced by avi_read_packet(), dv_read_packet(), iec61883_parse_queue_dv(), and mov_read_packet().

dv_frame_offset()

static int64_t dv_frame_offset ( AVFormatContext *  s, DVDemuxContext *  c, int64_t  timestamp, int  flags  )

static

Definition at line 436 of file dv.c.

Referenced by dv_read_seek().

ff_dv_offset_reset()

void ff_dv_offset_reset	(	DVDemuxContext *	c,
		int64_t	frame_offset
	)

Definition at line 455 of file dv.c.

Referenced by avi_read_seek(), and dv_read_seek().

dv_read_timecode()

static int dv_read_timecode ( AVFormatContext *  s )

static

Definition at line 471 of file dv.c.

Referenced by dv_read_header().

dv_read_header()

static int dv_read_header ( AVFormatContext *  s )

static

Definition at line 501 of file dv.c.

dv_read_packet()

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

static

Definition at line 551 of file dv.c.

dv_read_seek()

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

static

Definition at line 577 of file dv.c.

dv_probe()

static int dv_probe ( const AVProbeData *  p )

static

Definition at line 591 of file dv.c.

Variable Documentation

dv_audio_frequency

const int dv_audio_frequency[3]

static

Initial value:

= {
    48000, 44100, 32000,
}

Definition at line 116 of file dv.c.

Referenced by dv_extract_audio(), and dv_extract_audio_info().

ff_dv_demuxer

const AVInputFormat ff_dv_demuxer

Initial value:

= {
    .name           = "dv",
    .long_name      = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
    .priv_data_size = sizeof(RawDVContext),
    .read_probe     = dv_probe,
    .read_header    = dv_read_header,
    .read_packet    = dv_read_packet,
    .read_seek      = dv_read_seek,
    .extensions     = "dv,dif",
}

Definition at line 633 of file dv.c.