libavformat/spdifenc.c File Reference

IEC-61937 encapsulation of various formats, used by S/PDIF. More...

#include "avformat.h"
#include "avio_internal.h"
#include "spdif.h"
#include "libavcodec/ac3.h"
#include "libavcodec/dca.h"
#include "libavcodec/dcadata.h"
#include "libavcodec/aacadtsdec.h"
#include "libavutil/opt.h"

Go to the source code of this file.

Data Structures
struct	IEC61937Context
Defines
#define	SPDIF_FLAG_BIGENDIAN   0x01
#define	MAT_FRAME_SIZE   61424
#define	TRUEHD_FRAME_OFFSET   2560
#define	MAT_MIDDLE_CODE_OFFSET   -4
Functions
static int	spdif_header_ac3 (AVFormatContext *s, AVPacket *pkt)
static int	spdif_header_eac3 (AVFormatContext *s, AVPacket *pkt)
static int	spdif_dts4_subtype (int period)
static int	spdif_header_dts4 (AVFormatContext *s, AVPacket *pkt, int core_size, int sample_rate, int blocks)
static int	spdif_header_dts (AVFormatContext *s, AVPacket *pkt)
static int	spdif_header_mpeg (AVFormatContext *s, AVPacket *pkt)
static int	spdif_header_aac (AVFormatContext *s, AVPacket *pkt)
static int	spdif_header_truehd (AVFormatContext *s, AVPacket *pkt)
static int	spdif_write_header (AVFormatContext *s)
static int	spdif_write_trailer (AVFormatContext *s)
static av_always_inline void	spdif_put_16 (IEC61937Context *ctx, AVIOContext *pb, unsigned int val)
static int	spdif_write_packet (struct AVFormatContext *s, AVPacket *pkt)
Variables
static const AVOption	options []
class {
spdif
av_default_item_name
options
};
static enum IEC61937DataType	mpeg_data_type [2][3]
AVOutputFormat	ff_spdif_muxer

---

Detailed Description

IEC-61937 encapsulation of various formats, used by S/PDIF.

Author:

Bartlomiej Wolowiec

Anssi Hannula

Carl Eugen Hoyos

Definition in file spdifenc.c.

---

Define Documentation

#define MAT_FRAME_SIZE   61424

Definition at line 383 of file spdifenc.c.

Referenced by spdif_header_truehd(), and spdif_write_header().

#define MAT_MIDDLE_CODE_OFFSET   -4

Definition at line 385 of file spdifenc.c.

Referenced by spdif_header_truehd().

#define SPDIF_FLAG_BIGENDIAN   0x01

Definition at line 80 of file spdifenc.c.

Referenced by spdif_put_16(), and spdif_write_packet().

#define TRUEHD_FRAME_OFFSET   2560

Definition at line 384 of file spdifenc.c.

Referenced by spdif_header_truehd().

---

Function Documentation

static int spdif_dts4_subtype

(

int

period

)

[static]

Definition at line 146 of file spdifenc.c.

Referenced by spdif_header_dts4().

static int spdif_header_aac	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 339 of file spdifenc.c.

Referenced by spdif_write_header().

static int spdif_header_ac3	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 98 of file spdifenc.c.

Referenced by spdif_write_header().

static int spdif_header_dts	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 233 of file spdifenc.c.

Referenced by spdif_write_header().

static int spdif_header_dts4	(	AVFormatContext *	s,
		AVPacket *	pkt,
		int	core_size,
		int	sample_rate,
		int	blocks
	)			[static]

Definition at line 159 of file spdifenc.c.

Referenced by spdif_header_dts().

static int spdif_header_eac3	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 108 of file spdifenc.c.

Referenced by spdif_write_header().

static int spdif_header_mpeg	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 316 of file spdifenc.c.

Referenced by spdif_write_header().

static int spdif_header_truehd	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 387 of file spdifenc.c.

Referenced by spdif_write_header().

static av_always_inline void spdif_put_16	(	IEC61937Context *	ctx,
		AVIOContext *	pb,
		unsigned int	val
	)			[static]

Definition at line 476 of file spdifenc.c.

Referenced by spdif_write_packet().

static int spdif_write_header

(

AVFormatContext *

s

)

[static]

Definition at line 433 of file spdifenc.c.

static int spdif_write_packet	(	struct AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 485 of file spdifenc.c.

static int spdif_write_trailer

(

AVFormatContext *

s

)

[static]

Definition at line 468 of file spdifenc.c.

---

Variable Documentation

const { ... } [static]

av_default_item_name

Definition at line 96 of file spdifenc.c.

AVOutputFormat ff_spdif_muxer

Initial value:

 {
    "spdif",
    NULL_IF_CONFIG_SMALL("IEC 61937 (used on S/PDIF - IEC958)"),
    NULL,
    "spdif",
    sizeof(IEC61937Context),
    CODEC_ID_AC3,
    CODEC_ID_NONE,
    spdif_write_header,
    spdif_write_packet,
    spdif_write_trailer,
    .flags = AVFMT_NOTIMESTAMPS,
    .priv_class = &class,
}

Definition at line 538 of file spdifenc.c.

enum IEC61937DataType mpeg_data_type[2][3] [static]

Initial value:

 {
    
    { IEC61937_MPEG2_LAYER1_LSF, IEC61937_MPEG2_LAYER2_LSF, IEC61937_MPEG2_LAYER3_LSF },
    { IEC61937_MPEG1_LAYER1,     IEC61937_MPEG1_LAYER23,    IEC61937_MPEG1_LAYER23 },   
}

Definition at line 310 of file spdifenc.c.

Referenced by spdif_header_mpeg().

options [static]

Initial value:

 {
{ "spdif_flags", "IEC 61937 encapsulation flags", offsetof(IEC61937Context, spdif_flags), FF_OPT_TYPE_FLAGS, 0, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "spdif_flags" },
{ "be", "output in big-endian format (for use as s16be)", 0, FF_OPT_TYPE_CONST, SPDIF_FLAG_BIGENDIAN, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "spdif_flags" },
{ "dtshd_rate", "mux complete DTS frames in HD mode at the specified IEC958 rate (in Hz, default 0=disabled)", offsetof(IEC61937Context, dtshd_rate), FF_OPT_TYPE_INT, 0, 0, 768000, AV_OPT_FLAG_ENCODING_PARAM },
{ "dtshd_fallback_time", "min secs to strip HD for after an overflow (-1: till the end, default 60)", offsetof(IEC61937Context, dtshd_fallback), FF_OPT_TYPE_INT, 60, -1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ NULL },
}

Definition at line 88 of file spdifenc.c.

spdif

Definition at line 96 of file spdifenc.c.

Referenced by av_register_all().