vf_mix.c File Reference

#include "libavutil/avstring.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "framesync.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	MixContext

Macros
#define	OFFSET(x)   offsetof(MixContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Functions
static int	query_formats (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)
static int	process_frame (FFFrameSync *fs)
static int	config_output (AVFilterLink *outlink)
static av_cold void	uninit (AVFilterContext *ctx)
static int	activate (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (mix)

Variables
static const AVOption	mix_options []
static const AVFilterPad	outputs []
AVFilter	ff_vf_mix

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(MixContext, x)

Definition at line 248 of file vf_mix.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Definition at line 249 of file vf_mix.c.

Function Documentation

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 51 of file vf_mix.c.

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 68 of file vf_mix.c.

process_frame()

static int process_frame ( FFFrameSync *  fs )

static

Definition at line 110 of file vf_mix.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 174 of file vf_mix.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 229 of file vf_mix.c.

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 242 of file vf_mix.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

mix

)

Variable Documentation

mix_options

const AVOption mix_options[]

static

Initial value:

= {
    { "inputs", "set number of inputs", OFFSET(nb_inputs), AV_OPT_TYPE_INT, {.i64=2}, 2, INT_MAX, .flags = FLAGS },
    { "weights", "set weight for each input", OFFSET(weights_str), AV_OPT_TYPE_STRING, {.str="1 1"}, 0, 0, .flags = FLAGS },
    { "duration", "how to determine end of stream", OFFSET(duration), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, .flags = FLAGS, "duration" },
        { "longest",  "Duration of longest input",  0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "duration" },
        { "shortest", "Duration of shortest input", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "duration" },
        { "first",    "Duration of first input",    0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "duration" },
    { NULL },
}

Definition at line 251 of file vf_mix.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_output,
    },
    { NULL }
}

Definition at line 261 of file vf_mix.c.

ff_vf_mix

AVFilter ff_vf_mix

Initial value:

= {
    .name          = "mix",
    .description   = NULL_IF_CONFIG_SMALL("Mix video inputs."),
    .priv_size     = sizeof(MixContext),
    .priv_class    = &mix_class,
    .query_formats = query_formats,
    .outputs       = outputs,
    .init          = init,
    .uninit        = uninit,
    .activate      = activate,
    .flags         = AVFILTER_FLAG_DYNAMIC_INPUTS,
}

Definition at line 272 of file vf_mix.c.