vf_fsync.c File Reference

Filter for syncing video frames from external source. More...

#include "libavutil/avstring.h"
#include "libavutil/error.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavformat/avio.h"
#include "video.h"
#include "filters.h"

Go to the source code of this file.

Data Structures
struct	FsyncContext

Macros
#define	BUF_SIZE   256
#define	OFFSET(x)

Functions
static int	buf_fill (FsyncContext *ctx)
	Fills the buffer from cur to end, add \0 at EOF.
static int	buf_reload (FsyncContext *ctx)
	Copies cur to end to the beginning and fills the rest.
static void	buf_skip_eol (FsyncContext *ctx)
	Skip from cur over eol.
static int	buf_get_line_count (FsyncContext *ctx)
	Get number of bytes from cur until eol.
static int	buf_get_zero (FsyncContext *ctx)
	Get number of bytes from cur to '\0'.
static int	activate (AVFilterContext *ctx)
static int	fsync_config_props (AVFilterLink *outlink)
static av_cold int	fsync_init (AVFilterContext *ctx)
static av_cold void	fsync_uninit (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (fsync)

Variables
static const AVOption	fsync_options []
static const AVFilterPad	fsync_outputs []
const FFFilter	ff_vf_fsync

Detailed Description

Filter for syncing video frames from external source.

Author

Thilo Borgmann <thilo.borgmann at mail.de>

Definition in file vf_fsync.c.

Macro Definition Documentation

BUF_SIZE

#define BUF_SIZE   256

Definition at line 36 of file vf_fsync.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(FsyncContext, x)

Definition at line 52 of file vf_fsync.c.

Function Documentation

buf_fill()

static int buf_fill ( FsyncContext * ctx )

static

Fills the buffer from cur to end, add \0 at EOF.

Definition at line 63 of file vf_fsync.c.

Referenced by buf_reload(), and fsync_init().

buf_reload()

static int buf_reload ( FsyncContext * ctx )

static

Copies cur to end to the beginning and fills the rest.

Definition at line 81 of file vf_fsync.c.

Referenced by activate().

buf_skip_eol()

static void buf_skip_eol ( FsyncContext * ctx )

static

Skip from cur over eol.

Definition at line 102 of file vf_fsync.c.

Referenced by activate().

buf_get_line_count()

static int buf_get_line_count ( FsyncContext * ctx )

static

Get number of bytes from cur until eol.

Returns

>= 0 in case of success, -1 in case there is no line ending before end of buffer

Definition at line 118 of file vf_fsync.c.

Referenced by activate().

buf_get_zero()

static int buf_get_zero ( FsyncContext * ctx )

static

Get number of bytes from cur to '\0'.

Definition at line 133 of file vf_fsync.c.

Referenced by activate().

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 138 of file vf_fsync.c.

fsync_config_props()

static int fsync_config_props ( AVFilterLink * outlink )

static

Definition at line 224 of file vf_fsync.c.

fsync_init()

static av_cold int fsync_init ( AVFilterContext * ctx )

static

Definition at line 245 of file vf_fsync.c.

fsync_uninit()

static av_cold void fsync_uninit ( AVFilterContext * ctx )

static

Definition at line 272 of file vf_fsync.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

fsync

)

Variable Documentation

fsync_options

const AVOption fsync_options[]

static

Initial value:

= {
    { "file",   "set the file name to use for frame sync", OFFSET(filename), AV_OPT_TYPE_STRING, { .str = "" }, .flags= AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM },
    { "f",      "set the file name to use for frame sync", OFFSET(filename), AV_OPT_TYPE_STRING, { .str = "" }, .flags= AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM },
    { NULL }
}

Definition at line 54 of file vf_fsync.c.

fsync_outputs

const AVFilterPad fsync_outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = fsync_config_props,
    },
}

Definition at line 283 of file vf_fsync.c.

ff_vf_fsync

const FFFilter ff_vf_fsync

Initial value:

= {
    .p.name        = "fsync",
    .p.description = NULL_IF_CONFIG_SMALL("Synchronize video frames from external source."),
    .p.priv_class  = &fsync_class,
    .p.flags       = AVFILTER_FLAG_METADATA_ONLY,
    .init          = fsync_init,
    .uninit        = fsync_uninit,
    .priv_size     = sizeof(FsyncContext),
    .activate      = activate,
    .formats_state = FF_FILTER_FORMATS_PASSTHROUGH,
    FILTER_INPUTS(ff_video_default_filterpad),
    FILTER_OUTPUTS(fsync_outputs),
}

Definition at line 291 of file vf_fsync.c.