vf_overlay_qsv.c File Reference

A hardware accelerated overlay filter based on Intel Quick Sync Video VPP. More...

#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/common.h"
#include "libavutil/pixdesc.h"
#include "libavutil/eval.h"
#include "libavutil/hwcontext.h"
#include "libavutil/mathematics.h"
#include "filters.h"
#include "avfilter.h"
#include "formats.h"
#include "framesync.h"
#include "qsvvpp.h"

Go to the source code of this file.

Data Structures
struct	QSVOverlayContext

Macros
#define	MAIN   0
#define	OVERLAY   1
#define	OFFSET(x)
#define	FLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
#define	PASS_EXPR(e, s)

Enumerations
enum	var_name {   VAR_MAIN_iW , VAR_MW , VAR_MAIN_iH , VAR_MH ,   VAR_OVERLAY_iW , VAR_OVERLAY_iH , VAR_OVERLAY_X , VAR_OX ,   VAR_OVERLAY_Y , VAR_OY , VAR_OVERLAY_W , VAR_OW ,   VAR_OVERLAY_H , VAR_OH , VAR_VARS_NB }

Functions
	FRAMESYNC_DEFINE_CLASS (overlay_qsv, QSVOverlayContext, fs)
static int	eval_expr (AVFilterContext *ctx)
static int	have_alpha_planar (AVFilterLink *link)
static int	config_main_input (AVFilterLink *inlink)
static int	config_overlay_input (AVFilterLink *inlink)
static int	process_frame (FFFrameSync *fs)
static int	init_framesync (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static int	filter_callback (AVFilterLink *outlink, AVFrame *frame)
static int	overlay_qsv_init (AVFilterContext *ctx)
static av_cold void	overlay_qsv_uninit (AVFilterContext *ctx)
static int	activate (AVFilterContext *ctx)
static int	overlay_qsv_query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)

Variables
static const char *const	var_names []
static const AVOption	overlay_qsv_options []
static const AVFilterPad	overlay_qsv_inputs []
static const AVFilterPad	overlay_qsv_outputs []
const FFFilter	ff_vf_overlay_qsv

Detailed Description

A hardware accelerated overlay filter based on Intel Quick Sync Video VPP.

Definition in file vf_overlay_qsv.c.

Macro Definition Documentation

MAIN

#define MAIN   0

Definition at line 39 of file vf_overlay_qsv.c.

OVERLAY

#define OVERLAY   1

Definition at line 40 of file vf_overlay_qsv.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(QSVOverlayContext, x)

Definition at line 42 of file vf_overlay_qsv.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)

Definition at line 43 of file vf_overlay_qsv.c.

PASS_EXPR

#define PASS_EXPR	(		e,
			s )

Value:

    {\
    ret = av_expr_parse(&e, s, var_names, NULL, NULL, NULL, NULL, 0, ctx); \
    if (ret < 0) {\
        av_log(ctx, AV_LOG_ERROR, "Error when passing '%s'.\n", s);\
        goto release;\
    }\
}

Referenced by eval_expr().

Enumeration Type Documentation

var_name

enum var_name

Enumerator
VAR_MAIN_iW
VAR_MW
VAR_MAIN_iH
VAR_MH
VAR_OVERLAY_iW
VAR_OVERLAY_iH
VAR_OVERLAY_X
VAR_OX
VAR_OVERLAY_Y
VAR_OY
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_VARS_NB

Definition at line 45 of file vf_overlay_qsv.c.

Function Documentation

FRAMESYNC_DEFINE_CLASS()

FRAMESYNC_DEFINE_CLASS	(	overlay_qsv	,
		QSVOverlayContext	,
		fs	)

eval_expr()

static int eval_expr ( AVFilterContext * ctx )

static

Definition at line 101 of file vf_overlay_qsv.c.

Referenced by config_overlay_input().

have_alpha_planar()

static int have_alpha_planar ( AVFilterLink * link )

static

Definition at line 157 of file vf_overlay_qsv.c.

Referenced by config_overlay_input().

config_main_input()

static int config_main_input ( AVFilterLink * inlink )

static

Definition at line 176 of file vf_overlay_qsv.c.

config_overlay_input()

static int config_overlay_input ( AVFilterLink * inlink )

static

Definition at line 200 of file vf_overlay_qsv.c.

process_frame()

static int process_frame ( FFFrameSync * fs )

static

Definition at line 228 of file vf_overlay_qsv.c.

init_framesync()

static int init_framesync ( AVFilterContext * ctx )

static

Definition at line 249 of file vf_overlay_qsv.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 271 of file vf_overlay_qsv.c.

filter_callback()

static int filter_callback ( AVFilterLink * outlink, AVFrame * frame )

static

Definition at line 317 of file vf_overlay_qsv.c.

Referenced by overlay_qsv_init(), and qsv_stack_init().

overlay_qsv_init()

static int overlay_qsv_init ( AVFilterContext * ctx )

static

Definition at line 326 of file vf_overlay_qsv.c.

overlay_qsv_uninit()

static av_cold void overlay_qsv_uninit ( AVFilterContext * ctx )

static

Definition at line 353 of file vf_overlay_qsv.c.

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 363 of file vf_overlay_qsv.c.

overlay_qsv_query_formats()

static int overlay_qsv_query_formats ( const AVFilterContext * ctx, AVFilterFormatsConfig ** cfg_in, AVFilterFormatsConfig ** cfg_out )

static

Definition at line 369 of file vf_overlay_qsv.c.

Variable Documentation

var_names

const char* const var_names[]

static

Initial value:

= {
    "main_w",     "W",   
    "main_h",     "H",   
    "overlay_iw",        
    "overlay_ih",        
    "overlay_x",  "x",   
    "overlay_y",  "y",   
    "overlay_w",  "w",   
    "overlay_h",  "h",   
    NULL
}

Definition at line 70 of file vf_overlay_qsv.c.

overlay_qsv_options

const AVOption overlay_qsv_options[]

static

Initial value:

= {
    { "x", "Overlay x position", OFFSET(overlay_ox), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
    { "y", "Overlay y position", OFFSET(overlay_oy), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
    { "w", "Overlay width",      OFFSET(overlay_ow), AV_OPT_TYPE_STRING, { .str="overlay_iw"}, 0, 255, .flags = FLAGS},
    { "h", "Overlay height",     OFFSET(overlay_oh), AV_OPT_TYPE_STRING, { .str="overlay_ih*w/overlay_iw"}, 0, 255, .flags = FLAGS},
    { "alpha", "Overlay global alpha", OFFSET(overlay_alpha), AV_OPT_TYPE_INT, { .i64 = 255}, 0, 255, .flags = FLAGS},
    { "eof_action", "Action to take when encountering EOF from secondary input ",
        OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
        EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, .unit = "eof_action" },
        { "repeat", "Repeat the previous frame.",   0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, .unit = "eof_action" },
        { "endall", "End both streams.",            0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, .unit = "eof_action" },
        { "pass",   "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS },   .flags = FLAGS, .unit = "eof_action" },
    { "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
    { "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
    { NULL }
}

Definition at line 82 of file vf_overlay_qsv.c.

overlay_qsv_inputs

const AVFilterPad overlay_qsv_inputs[]

static

Initial value:

= {
    {
        .name          = "main",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_main_input,
        .get_buffer.video = ff_qsvvpp_get_video_buffer,
    },
    {
        .name          = "overlay",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_overlay_input,
        .get_buffer.video = ff_qsvvpp_get_video_buffer,
    },
}

Definition at line 403 of file vf_overlay_qsv.c.

overlay_qsv_outputs

const AVFilterPad overlay_qsv_outputs[]

static

Initial value:

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

Definition at line 418 of file vf_overlay_qsv.c.

ff_vf_overlay_qsv

const FFFilter ff_vf_overlay_qsv

Initial value:

= {
    .p.name         = "overlay_qsv",
    .p.description  = NULL_IF_CONFIG_SMALL("Quick Sync Video overlay."),
    .p.priv_class   = &overlay_qsv_class,
    .p.flags        = AVFILTER_FLAG_HWDEVICE,
    .priv_size      = sizeof(QSVOverlayContext),
    .preinit        = overlay_qsv_framesync_preinit,
    .init           = overlay_qsv_init,
    .uninit         = overlay_qsv_uninit,
    .activate       = activate,
    FILTER_INPUTS(overlay_qsv_inputs),
    FILTER_OUTPUTS(overlay_qsv_outputs),
    FILTER_QUERY_FUNC2(overlay_qsv_query_formats),
    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
}

Definition at line 426 of file vf_overlay_qsv.c.