stack_internal.c File Reference

Go to the source code of this file.

Macros
#define	OFFSET(x)   offsetof(StackHWContext, x)
#define	FLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
#define	SET_OUTPUT_REGION(region, rx, ry, rw, rh)
#define	STACK_COMMON_OPTS
#define	DEFINE_HSTACK_OPTIONS(api)
#define	DEFINE_VSTACK_OPTIONS(api)
#define	DEFINE_XSTACK_OPTIONS(api)
#define	DEFINE_STACK_FILTER(category, api, capi, filter_flags)

Functions
static int	init_framesync (AVFilterContext *avctx)
static int	config_comm_output (AVFilterLink *outlink)
static int	stack_init (AVFilterContext *avctx)
static av_cold void	stack_uninit (AVFilterContext *avctx)
static int	stack_activate (AVFilterContext *avctx)

Variables
static const AVFilterPad	stack_outputs []

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(StackHWContext, x)

Definition at line 19 of file stack_internal.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)

Definition at line 20 of file stack_internal.c.

SET_OUTPUT_REGION

#define SET_OUTPUT_REGION	(		region,
			rx,
			ry,
			rw,
			rh
	)

Value:

        do {  \
        region->x = rx;                                 \
        region->y = ry;                                 \
        region->width = rw;                             \
        region->height = rh;                            \
    } while (0)

Definition at line 22 of file stack_internal.c.

STACK_COMMON_OPTS

#define STACK_COMMON_OPTS

Value:

    { "inputs", "Set number of inputs", OFFSET(base.nb_inputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 2, UINT16_MAX, .flags = FLAGS }, \
    { "shortest", "Force termination when the shortest input terminates", OFFSET(base.shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },

Definition at line 310 of file stack_internal.c.

DEFINE_HSTACK_OPTIONS

#define DEFINE_HSTACK_OPTIONS

(

api

)

Value:

    static const AVOption hstack_##api##_options[] = {                  \
        STACK_COMMON_OPTS                                               \
        { "height", "Set output height (0 to use the height of input 0)", OFFSET(base.tile_height), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, UINT16_MAX, FLAGS }, \
        { NULL }                                                        \
    }

Definition at line 314 of file stack_internal.c.

DEFINE_VSTACK_OPTIONS

#define DEFINE_VSTACK_OPTIONS

(

api

)

Value:

    static const AVOption vstack_##api##_options[] = {                  \
        STACK_COMMON_OPTS                                               \
        { "width",   "Set output width (0 to use the width of input 0)", OFFSET(base.tile_width), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, UINT16_MAX, FLAGS }, \
        { NULL }                                                        \
    }

Definition at line 321 of file stack_internal.c.

DEFINE_XSTACK_OPTIONS

#define DEFINE_XSTACK_OPTIONS

(

api

)

Value:

    static const AVOption xstack_##api##_options[] = {                  \
        STACK_COMMON_OPTS                                               \
        { "layout", "Set custom layout", OFFSET(base.layout), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, .flags = FLAGS }, \
        { "grid",   "set fixed size grid layout", OFFSET(base.nb_grid_columns), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS }, \
        { "grid_tile_size",   "set tile size in grid layout", OFFSET(base.tile_width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, .flags = FLAGS }, \
        { "fill",   "Set the color for unused pixels", OFFSET(base.fillcolor_str), AV_OPT_TYPE_STRING, {.str = "none"}, .flags = FLAGS }, \
        { NULL }                                                        \
    }

Definition at line 328 of file stack_internal.c.

DEFINE_STACK_FILTER

#define DEFINE_STACK_FILTER	(		category,
			api,
			capi,
			filter_flags
	)

Value:

    static const AVClass category##_##api##_class = {                   \
        .class_name = #category "_" #api,                               \
        .item_name  = av_default_item_name,                             \
        .option     = category##_##api##_options,                       \
        .version    = LIBAVUTIL_VERSION_INT,                            \
    };                                                                  \
    const AVFilter ff_vf_##category##_##api = {                         \
        .name           = #category "_" #api,                           \
        .description    = NULL_IF_CONFIG_SMALL(#capi " " #category),    \
        .priv_size      = sizeof(StackHWContext),                       \
        .priv_class     = &category##_##api##_class,                    \
        .init           = api##_stack_init,                             \
        .uninit         = api##_stack_uninit,                           \
        .activate       = stack_activate,                               \
        FILTER_PIXFMTS_ARRAY(api ## _stack_pix_fmts),                   \
        FILTER_OUTPUTS(stack_outputs),                                  \
        .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,                 \
        .flags          = AVFILTER_FLAG_DYNAMIC_INPUTS | filter_flags,  \
    }

Definition at line 338 of file stack_internal.c.

Function Documentation

init_framesync()

static int init_framesync ( AVFilterContext *  avctx )

static

Definition at line 29 of file stack_internal.c.

Referenced by config_comm_output().

config_comm_output()

static int config_comm_output ( AVFilterLink *  outlink )

static

Definition at line 53 of file stack_internal.c.

Referenced by config_output().

stack_init()

static int stack_init ( AVFilterContext *  avctx )

static

Definition at line 225 of file stack_internal.c.

Referenced by qsv_stack_init(), and vaapi_stack_init().

stack_uninit()

static av_cold void stack_uninit ( AVFilterContext *  avctx )

static

Definition at line 288 of file stack_internal.c.

Referenced by qsv_stack_uninit(), and vaapi_stack_uninit().

stack_activate()

static int stack_activate ( AVFilterContext *  avctx )

static

Definition at line 296 of file stack_internal.c.

Variable Documentation

stack_outputs

const AVFilterPad stack_outputs[]

static

Initial value:

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

Definition at line 302 of file stack_internal.c.