vf_overlay_cuda.c File Reference

Overlay one video on top of another using cuda hardware acceleration. More...

#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_cuda_internal.h"
#include "libavutil/cuda_check.h"
#include "libavutil/eval.h"
#include "avfilter.h"
#include "filters.h"
#include "framesync.h"
#include "cuda/load_helper.h"

Go to the source code of this file.

Data Structures
struct	OverlayCUDAContext
	OverlayCUDAContext. More...

Macros
#define	CHECK_CU(x)
#define	DIV_UP(a, b)
#define	BLOCK_X   32
#define	BLOCK_Y   16
#define	MAIN   0
#define	OVERLAY   1
#define	OFFSET(x)
#define	FLAGS   (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)

Enumerations
enum	var_name {   VAR_MAIN_W , VAR_MW , VAR_MAIN_H , VAR_MH ,   VAR_OVERLAY_W , VAR_OW , VAR_OVERLAY_H , VAR_OH ,   VAR_X , VAR_Y , VAR_N , VAR_T ,   VAR_VARS_NB }
enum	EvalMode { EVAL_MODE_INIT , EVAL_MODE_FRAME , EVAL_MODE_NB }

Functions
static int	format_is_supported (const enum AVPixelFormat formats[], enum AVPixelFormat fmt)
	Helper to find out if provided format is supported by filter.
static int	normalize_xy (double d, int chroma_sub)
static void	eval_expr (AVFilterContext *ctx)
static int	set_expr (AVExpr **pexpr, const char *expr, const char *option, void *log_ctx)
static int	formats_match (const enum AVPixelFormat format_main, const enum AVPixelFormat format_overlay)
	Helper checks if we can process main and overlay pixel formats.
static int	overlay_cuda_call_kernel (OverlayCUDAContext *ctx, int x_position, int y_position, uint8_t *main_data, int main_linesize, int main_width, int main_height, uint8_t *overlay_data, int overlay_linesize, int overlay_width, int overlay_height, uint8_t *alpha_data, int alpha_linesize, int alpha_adj_x, int alpha_adj_y)
	Call overlay kernell for a plane.
static int	overlay_cuda_blend (FFFrameSync *fs)
	Perform blend overlay picture over main picture.
static int	config_input_overlay (AVFilterLink *inlink)
static av_cold int	overlay_cuda_init (AVFilterContext *avctx)
	Initialize overlay_cuda.
static av_cold void	overlay_cuda_uninit (AVFilterContext *avctx)
	Uninitialize overlay_cuda.
static int	overlay_cuda_activate (AVFilterContext *avctx)
	Activate overlay_cuda.
static int	overlay_cuda_config_output (AVFilterLink *outlink)
	Configure output.
	FRAMESYNC_DEFINE_CLASS (overlay_cuda, OverlayCUDAContext, fs)

Variables
static enum AVPixelFormat	supported_main_formats []
static enum AVPixelFormat	supported_overlay_formats []
static const char *const	var_names []
static const AVOption	overlay_cuda_options []
static const AVFilterPad	overlay_cuda_inputs []
static const AVFilterPad	overlay_cuda_outputs []
const FFFilter	ff_vf_overlay_cuda

Detailed Description

Overlay one video on top of another using cuda hardware acceleration.

Definition in file vf_overlay_cuda.c.

Macro Definition Documentation

CHECK_CU

#define CHECK_CU

(

x

)

Value:

FF_CUDA_CHECK_DL(ctx, ctx->hwctx->internal->cuda_dl, x)

Definition at line 40 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_blend(), overlay_cuda_call_kernel(), overlay_cuda_config_output(), and overlay_cuda_uninit().

DIV_UP

#define DIV_UP	(		a,
			b )

Value:

( ((a) + (b) - 1) / (b) )

Definition at line 41 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_call_kernel().

BLOCK_X

#define BLOCK_X   32

Definition at line 43 of file vf_overlay_cuda.c.

BLOCK_Y

#define BLOCK_Y   16

Definition at line 44 of file vf_overlay_cuda.c.

MAIN

#define MAIN   0

Definition at line 46 of file vf_overlay_cuda.c.

OVERLAY

#define OVERLAY   1

Definition at line 47 of file vf_overlay_cuda.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(OverlayCUDAContext, x)

Definition at line 522 of file vf_overlay_cuda.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)

Definition at line 523 of file vf_overlay_cuda.c.

Enumeration Type Documentation

var_name

enum var_name

Enumerator
VAR_MAIN_W
VAR_MW
VAR_MAIN_H
VAR_MH
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_X
VAR_Y
VAR_N
VAR_T
VAR_VARS_NB

Definition at line 62 of file vf_overlay_cuda.c.

EvalMode

enum EvalMode

Enumerator
EVAL_MODE_INIT
EVAL_MODE_FRAME
EVAL_MODE_NB

Definition at line 74 of file vf_overlay_cuda.c.

Function Documentation

format_is_supported()

static int format_is_supported ( const enum AVPixelFormat formats[], enum AVPixelFormat fmt )

static

Helper to find out if provided format is supported by filter.

Definition at line 124 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_config_output().

normalize_xy()

static int normalize_xy ( double d, int chroma_sub )

inlinestatic

Definition at line 132 of file vf_overlay_cuda.c.

Referenced by eval_expr().

eval_expr()

static void eval_expr ( AVFilterContext * ctx )

static

Definition at line 139 of file vf_overlay_cuda.c.

Referenced by config_input_overlay(), and overlay_cuda_blend().

set_expr()

static int set_expr ( AVExpr ** pexpr, const char * expr, const char * option, void * log_ctx )

static

Definition at line 154 of file vf_overlay_cuda.c.

Referenced by config_input_overlay().

formats_match()

static int formats_match ( const enum AVPixelFormat format_main, const enum AVPixelFormat format_overlay )

static

Helper checks if we can process main and overlay pixel formats.

Definition at line 178 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_config_output().

overlay_cuda_call_kernel()

static int overlay_cuda_call_kernel ( OverlayCUDAContext * ctx, int x_position, int y_position, uint8_t * main_data, int main_linesize, int main_width, int main_height, uint8_t * overlay_data, int overlay_linesize, int overlay_width, int overlay_height, uint8_t * alpha_data, int alpha_linesize, int alpha_adj_x, int alpha_adj_y )

static

Call overlay kernell for a plane.

Definition at line 193 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_blend().

overlay_cuda_blend()

static int overlay_cuda_blend ( FFFrameSync * fs )

static

Perform blend overlay picture over main picture.

Definition at line 224 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_init().

config_input_overlay()

static int config_input_overlay ( AVFilterLink * inlink )

static

Definition at line 336 of file vf_overlay_cuda.c.

overlay_cuda_init()

static av_cold int overlay_cuda_init ( AVFilterContext * avctx )

static

Initialize overlay_cuda.

Definition at line 371 of file vf_overlay_cuda.c.

overlay_cuda_uninit()

static av_cold void overlay_cuda_uninit ( AVFilterContext * avctx )

static

Uninitialize overlay_cuda.

Definition at line 382 of file vf_overlay_cuda.c.

overlay_cuda_activate()

static int overlay_cuda_activate ( AVFilterContext * avctx )

static

Activate overlay_cuda.

Definition at line 405 of file vf_overlay_cuda.c.

overlay_cuda_config_output()

static int overlay_cuda_config_output ( AVFilterLink * outlink )

static

Configure output.

Definition at line 415 of file vf_overlay_cuda.c.

FRAMESYNC_DEFINE_CLASS()

FRAMESYNC_DEFINE_CLASS	(	overlay_cuda	,
		OverlayCUDAContext	,
		fs	)

Variable Documentation

supported_main_formats

enum AVPixelFormat supported_main_formats[]

static

Initial value:

= {
    AV_PIX_FMT_NV12,
    AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_NONE,
}

Definition at line 49 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_config_output().

supported_overlay_formats

enum AVPixelFormat supported_overlay_formats[]

static

Initial value:

= {
    AV_PIX_FMT_NV12,
    AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_YUVA420P,
    AV_PIX_FMT_NONE,
}

Definition at line 55 of file vf_overlay_cuda.c.

Referenced by overlay_cuda_config_output().

var_names

const char* const var_names[]

static

Initial value:

= {
    "main_w",    "W", 
    "main_h",    "H", 
    "overlay_w", "w", 
    "overlay_h", "h", 
    "x",
    "y",
    "n",            
    "t",            
    NULL
}

Definition at line 80 of file vf_overlay_cuda.c.

overlay_cuda_options

const AVOption overlay_cuda_options[]

static

Initial value:

= {
    { "x", "set the x expression of overlay", OFFSET(x_expr), AV_OPT_TYPE_STRING, { .str = "0" }, 0, 0, FLAGS },
    { "y", "set the y expression of overlay", OFFSET(y_expr), AV_OPT_TYPE_STRING, { .str = "0" }, 0, 0, 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" },
    { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, { .i64 = EVAL_MODE_FRAME }, 0, EVAL_MODE_NB - 1, FLAGS, .unit = "eval" },
         { "init",  "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, { .i64=EVAL_MODE_INIT },  .flags = FLAGS, .unit = "eval" },
         { "frame", "eval expressions per-frame",                  0, AV_OPT_TYPE_CONST, { .i64=EVAL_MODE_FRAME }, .flags = FLAGS, .unit = "eval" },
    { "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 525 of file vf_overlay_cuda.c.

overlay_cuda_inputs

const AVFilterPad overlay_cuda_inputs[]

static

Initial value:

= {
    {
        .name         = "main",
        .type         = AVMEDIA_TYPE_VIDEO,
    },
    {
        .name         = "overlay",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input_overlay,
    },
}

Definition at line 544 of file vf_overlay_cuda.c.

overlay_cuda_outputs

const AVFilterPad overlay_cuda_outputs[]

static

Initial value:

= {
    {
        .name          = "default",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = &overlay_cuda_config_output,
    },
}

Definition at line 556 of file vf_overlay_cuda.c.

ff_vf_overlay_cuda

const FFFilter ff_vf_overlay_cuda

Initial value:

= {
    .p.name          = "overlay_cuda",
    .p.description   = NULL_IF_CONFIG_SMALL("Overlay one video on top of another using CUDA"),
    .p.priv_class    = &overlay_cuda_class,
    .priv_size       = sizeof(OverlayCUDAContext),
    .init            = &overlay_cuda_init,
    .uninit          = &overlay_cuda_uninit,
    .activate        = &overlay_cuda_activate,
    FILTER_INPUTS(overlay_cuda_inputs),
    FILTER_OUTPUTS(overlay_cuda_outputs),
    FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA),
    .preinit         = overlay_cuda_framesync_preinit,
    .p.flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
    .flags_internal  = FF_FILTER_FLAG_HWFRAME_AWARE,
}

Definition at line 564 of file vf_overlay_cuda.c.