#include <stdint.h>
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/tree.h"
#include "libavutil/dict.h"
#include "libavutil/avassert.h"
#include "libavutil/time.h"
#include "libavutil/opt.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/mpegaudiodata.h"
#include "mux.h"
#include "nut.h"
#include "internal.h"
#include "avio_internal.h"
#include "riff.h"
#include "version.h"

Macros
#define	OFFSET(x) offsetof(NUTContext, x)

#define	E AV_OPT_FLAG_ENCODING_PARAM

Functions
static AVRational	choose_timebase (AVFormatContext s, AVStream st, int min_precision)
	Chooses a timebase for muxing the specified stream. More...

static int	find_expected_header (AVCodecParameters *p, int size, int key_frame, uint8_t out[64])

static int	find_header_idx (AVFormatContext s, AVCodecParameters p, int size, int frame_type)

static void	build_elision_headers (AVFormatContext *s)

static void	build_frame_code (AVFormatContext *s)

static int	get_v_length (uint64_t val)
	Get the length in bytes which is needed to store val as v. More...

static void	put_v (AVIOContext *bc, uint64_t val)
	Put val using a variable number of bytes. More...

static void	put_tt (NUTContext nut, AVRational time_base, AVIOContext *bc, uint64_t val)

static void	put_str (AVIOContext bc, const char string)
	Store a string as vb. More...

static void	put_s (AVIOContext *bc, int64_t val)

static void	put_packet (NUTContext nut, AVIOContext bc, AVIOContext *dyn_bc, uint64_t startcode)

static void	write_mainheader (NUTContext nut, AVIOContext bc)

static int	write_streamheader (AVFormatContext avctx, AVIOContext bc, AVStream *st, int i)

static int	add_info (AVIOContext bc, const char type, const char *value)

static int	write_globalinfo (NUTContext nut, AVIOContext bc)

static int	write_streaminfo (NUTContext nut, AVIOContext bc, int stream_id)

static int	write_chapter (NUTContext nut, AVIOContext bc, int id)

static int	write_index (NUTContext nut, AVIOContext bc)

static int	write_headers (AVFormatContext avctx, AVIOContext bc)

static int	nut_write_header (AVFormatContext *s)

static int	get_needed_flags (NUTContext nut, StreamContext nus, FrameCode fc, AVPacket pkt)

static int	find_best_header_idx (NUTContext nut, AVPacket pkt)

static int	write_sm_data (AVFormatContext s, AVIOContext bc, AVPacket *pkt, int is_meta)

static int	nut_write_packet (AVFormatContext s, AVPacket pkt)

static int	nut_write_trailer (AVFormatContext *s)

static void	nut_write_deinit (AVFormatContext *s)

Variables
static const AVOption	options []

class {
class_name = "nutenc"

item_name = av_default_item_name

option = options

version = LIBAVUTIL_VERSION_INT

};

const FFOutputFormat	ff_nut_muxer

Macro Definition Documentation

◆ OFFSET

#define OFFSET ( x ) offsetof(NUTContext, x)

Definition at line 1223 of file nutenc.c.

◆ E

#define E AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1224 of file nutenc.c.

Function Documentation

◆ choose_timebase()

static AVRational choose_timebase	(	AVFormatContext *	s,
		AVStream *	st,
		int	min_precision
	)

static

Chooses a timebase for muxing the specified stream.

The chosen timebase allows sample accurate timestamps based on the framerate or sample rate for audio streams. It also is at least as precise as 1/min_precision would be.

Definition at line 47 of file nutenc.c.

Referenced by nut_write_header().

◆ find_expected_header()

static int find_expected_header	(	AVCodecParameters *	p,
		int	size,
		int	key_frame,
		uint8_t	out[64]
	)

static

Definition at line 60 of file nutenc.c.

Referenced by find_header_idx().

◆ find_header_idx()

static int find_header_idx	(	AVFormatContext *	s,
		AVCodecParameters *	p,
		int	size,
		int	frame_type
	)

static

Definition at line 127 of file nutenc.c.

Referenced by build_frame_code().

◆ build_elision_headers()

static void build_elision_headers ( AVFormatContext * s )

static

Definition at line 144 of file nutenc.c.

Referenced by nut_write_header().

◆ build_frame_code()

static void build_frame_code ( AVFormatContext * s )

static

Definition at line 166 of file nutenc.c.

Referenced by nut_write_header().

◆ get_v_length()

static int get_v_length ( uint64_t val )

static

Get the length in bytes which is needed to store val as v.

Definition at line 305 of file nutenc.c.

Referenced by nut_write_packet(), and put_v().

◆ put_v()

static void put_v	(	AVIOContext *	bc,
		uint64_t	val
	)

static

Put val using a variable number of bytes.

Definition at line 318 of file nutenc.c.

Referenced by nut_write_packet(), put_packet(), put_s(), put_str(), put_tt(), write_chapter(), write_globalinfo(), write_index(), write_mainheader(), write_sm_data(), write_streamheader(), and write_streaminfo().

◆ put_tt()

static void put_tt	(	NUTContext *	nut,
		AVRational *	time_base,
		AVIOContext *	bc,
		uint64_t	val
	)

static

Definition at line 328 of file nutenc.c.

Referenced by nut_write_packet(), write_chapter(), and write_index().

◆ put_str()

static void put_str	(	AVIOContext *	bc,
		const char *	string
	)

static

Store a string as vb.

Definition at line 337 of file nutenc.c.

Referenced by add_info(), and write_sm_data().

◆ put_s()

static void put_s	(	AVIOContext *	bc,
		int64_t	val
	)

static

Definition at line 345 of file nutenc.c.

Referenced by add_info(), write_chapter(), write_mainheader(), and write_sm_data().

◆ put_packet()

static void put_packet	(	NUTContext *	nut,
		AVIOContext *	bc,
		AVIOContext *	dyn_bc,
		uint64_t	startcode
	)

static

Definition at line 350 of file nutenc.c.

Referenced by nut_write_packet(), nut_write_trailer(), and write_headers().

◆ write_mainheader()

static void write_mainheader	(	NUTContext *	nut,
		AVIOContext *	bc
	)

static

Definition at line 371 of file nutenc.c.

Referenced by write_headers().

◆ write_streamheader()

static int write_streamheader	(	AVFormatContext *	avctx,
		AVIOContext *	bc,
		AVStream *	st,
		int	i
	)

static

Definition at line 451 of file nutenc.c.

Referenced by write_headers().

◆ add_info()

static int add_info	(	AVIOContext *	bc,
		const char *	type,
		const char *	value
	)

static

Definition at line 508 of file nutenc.c.

Referenced by write_chapter(), write_globalinfo(), and write_streaminfo().

◆ write_globalinfo()

static int write_globalinfo	(	NUTContext *	nut,
		AVIOContext *	bc
	)

static

Definition at line 516 of file nutenc.c.

Referenced by write_headers().

◆ write_streaminfo()

static int write_streaminfo	(	NUTContext *	nut,
		AVIOContext *	bc,
		int	stream_id
	)

static

Definition at line 544 of file nutenc.c.

Referenced by write_headers().

◆ write_chapter()

static int write_chapter	(	NUTContext *	nut,
		AVIOContext *	bc,
		int	id
	)

static

Definition at line 586 of file nutenc.c.

Referenced by write_headers().

◆ write_index()

static int write_index	(	NUTContext *	nut,
		AVIOContext *	bc
	)

static

Definition at line 614 of file nutenc.c.

Referenced by nut_write_trailer().

◆ write_headers()

static int write_headers	(	AVFormatContext *	avctx,
		AVIOContext *	bc
	)

static

Definition at line 666 of file nutenc.c.

Referenced by nut_write_header(), nut_write_packet(), and nut_write_trailer().

◆ nut_write_header()

static int nut_write_header ( AVFormatContext * s )

static

Definition at line 718 of file nutenc.c.

◆ get_needed_flags()

static int get_needed_flags	(	NUTContext *	nut,
		StreamContext *	nus,
		FrameCode *	fc,
		AVPacket *	pkt
	)

static

Definition at line 804 of file nutenc.c.

Referenced by nut_write_packet().

◆ find_best_header_idx()

static int find_best_header_idx	(	NUTContext *	nut,
		AVPacket *	pkt
	)

static

Definition at line 833 of file nutenc.c.

Referenced by nut_write_packet().

◆ write_sm_data()

static int write_sm_data	(	AVFormatContext *	s,
		AVIOContext *	bc,
		AVPacket *	pkt,
		int	is_meta
	)

static

Definition at line 852 of file nutenc.c.

Referenced by nut_write_packet().

◆ nut_write_packet()

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

static

Definition at line 962 of file nutenc.c.

◆ nut_write_trailer()

static int nut_write_trailer ( AVFormatContext * s )

static

Definition at line 1185 of file nutenc.c.

◆ nut_write_deinit()

static void nut_write_deinit ( AVFormatContext * s )

static

Definition at line 1208 of file nutenc.c.

Variable Documentation

◆ options

const AVOption options[]

static

Initial value:

= {
    { "syncpoints",  "NUT syncpoint behaviour",                         OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0},             INT_MIN, INT_MAX, E, .unit = "syncpoints" },
    { "default",     "",                                                0,             AV_OPT_TYPE_CONST, {.i64 = 0},             INT_MIN, INT_MAX, E, .unit = "syncpoints" },
    { "none",        "Disable syncpoints, low overhead and unseekable", 0,             AV_OPT_TYPE_CONST, {.i64 = NUT_PIPE},      INT_MIN, INT_MAX, E, .unit = "syncpoints" },
    { "timestamped", "Extend syncpoints with a wallclock timestamp",    0,             AV_OPT_TYPE_CONST, {.i64 = NUT_BROADCAST}, INT_MIN, INT_MAX, E, .unit = "syncpoints" },
    { "write_index", "Write index",                               OFFSET(write_index), AV_OPT_TYPE_BOOL,  {.i64 = 1},                   0,       1, E, },
    { NULL },
}

Definition at line 1225 of file nutenc.c.

◆ class_name

class_name = "nutenc"

private

Definition at line 1235 of file nutenc.c.

◆ item_name

item_name = av_default_item_name

private

Definition at line 1236 of file nutenc.c.

◆ option

option = options

private

Definition at line 1237 of file nutenc.c.

◆ version

version = LIBAVUTIL_VERSION_INT

private

Definition at line 1238 of file nutenc.c.

◆ @342

const { ... }

◆ ff_nut_muxer

const FFOutputFormat ff_nut_muxer

Initial value:

= {
    .p.name         = "nut",
    .p.long_name    = NULL_IF_CONFIG_SMALL("NUT"),
    .p.mime_type    = "video/x-nut",
    .p.extensions   = "nut",
    .priv_data_size = sizeof(NUTContext),
    .p.audio_codec  = CONFIG_LIBVORBIS ? AV_CODEC_ID_VORBIS :
                      CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2,
    .p.video_codec  = AV_CODEC_ID_MPEG4,
    .write_header   = nut_write_header,
    .write_packet   = nut_write_packet,
    .write_trailer  = nut_write_trailer,
    .deinit         = nut_write_deinit,
    .p.flags        = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
    .p.codec_tag    = ff_nut_codec_tags,
    .p.priv_class   = &class,
}

Definition at line 1241 of file nutenc.c.

Macros

Functions

Variables

Macro Definition Documentation

◆ OFFSET

◆ E

Function Documentation

◆ choose_timebase()

◆ find_expected_header()

◆ find_header_idx()

◆ build_elision_headers()

◆ build_frame_code()

◆ get_v_length()

◆ put_v()

◆ put_tt()

◆ put_str()

◆ put_s()

◆ put_packet()

◆ write_mainheader()

◆ write_streamheader()

◆ add_info()

◆ write_globalinfo()

◆ write_streaminfo()

◆ write_chapter()

◆ write_index()

◆ write_headers()

◆ nut_write_header()

◆ get_needed_flags()

◆ find_best_header_idx()

◆ write_sm_data()

◆ nut_write_packet()

◆ nut_write_trailer()

◆ nut_write_deinit()

Variable Documentation

◆ options

◆ class_name

◆ item_name

◆ option

◆ version

◆ @342

◆ ff_nut_muxer