lavfi.c File Reference

libavfilter virtual input device More...

#include <float.h>
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/file.h"
#include "libavutil/internal.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavfilter/avfilter.h"
#include "libavfilter/avfiltergraph.h"
#include "libavfilter/buffersink.h"
#include "libavformat/internal.h"
#include "avdevice.h"

Go to the source code of this file.

Data Structures
struct	LavfiContext

Macros
#define	FAIL(ERR)   { ret = ERR; goto end; }
#define	OFFSET(x)   offsetof(LavfiContext, x)
#define	DEC   AV_OPT_FLAG_DECODING_PARAM

Functions
static int *	create_all_formats (int n)
static av_cold int	lavfi_read_close (AVFormatContext *avctx)
static int	create_subcc_streams (AVFormatContext *avctx)
static av_cold int	lavfi_read_header (AVFormatContext *avctx)
static int	create_subcc_packet (AVFormatContext *avctx, AVFrame *frame, int sink_idx)
static int	lavfi_read_packet (AVFormatContext *avctx, AVPacket *pkt)

Variables
static const AVOption	options []
static const AVClass	lavfi_class
AVInputFormat	ff_lavfi_demuxer

Detailed Description

libavfilter virtual input device

Definition in file lavfi.c.

Macro Definition Documentation

#define FAIL

(

ERR

)

{ ret = ERR; goto end; }

Referenced by lavfi_read_header().

#define OFFSET

(

x

)

offsetof(LavfiContext, x)

Definition at line 487 of file lavfi.c.

#define DEC   AV_OPT_FLAG_DECODING_PARAM

Definition at line 489 of file lavfi.c.

Function Documentation

static int* create_all_formats ( int  n )

static

Definition at line 61 of file lavfi.c.

Referenced by lavfi_read_header().

static av_cold int lavfi_read_close ( AVFormatContext *  avctx )

static

Definition at line 82 of file lavfi.c.

Referenced by lavfi_read_header().

static int create_subcc_streams ( AVFormatContext *  avctx )

static

Definition at line 97 of file lavfi.c.

Referenced by lavfi_read_header().

static av_cold int lavfi_read_header ( AVFormatContext *  avctx )

static

Definition at line 118 of file lavfi.c.

static int create_subcc_packet ( AVFormatContext *  avctx, AVFrame *  frame, int  sink_idx  )

static

Definition at line 354 of file lavfi.c.

Referenced by lavfi_read_packet().

static int lavfi_read_packet ( AVFormatContext *  avctx, AVPacket *  pkt  )

static

Definition at line 378 of file lavfi.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "graph",     "set libavfilter graph", OFFSET(graph_str),  AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
    { "graph_file","set libavfilter graph filename", OFFSET(graph_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC},
    { "dumpgraph", "dump graph to stderr",  OFFSET(dump_graph), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
    { NULL },
}

Definition at line 491 of file lavfi.c.

const AVClass lavfi_class

static

Initial value:

= {
    .class_name = "lavfi indev",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_DEVICE_INPUT,
}

Definition at line 498 of file lavfi.c.

AVInputFormat ff_lavfi_demuxer

Initial value:

= {
    .name           = "lavfi",
    .long_name      = NULL_IF_CONFIG_SMALL("Libavfilter virtual input device"),
    .priv_data_size = sizeof(LavfiContext),
    .read_header    = lavfi_read_header,
    .read_packet    = lavfi_read_packet,
    .read_close     = lavfi_read_close,
    .flags          = AVFMT_NOFILE,
    .priv_class     = &lavfi_class,
}

Definition at line 506 of file lavfi.c.