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vf_overlay.c File Reference

overlay one video on top of another More...

#include "avfilter.h"
#include "formats.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/avstring.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/timestamp.h"
#include "internal.h"
#include "dualinput.h"
#include "drawutils.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  OverlayContext
 

Macros

#define MAIN   0
 
#define OVERLAY   1
 
#define R   0
 
#define G   1
 
#define B   2
 
#define A   3
 
#define Y   0
 
#define U   1
 
#define V   2
 
#define FAST_DIV255(x)   ((((x) + 128) * 257) >> 16)
 
#define UNPREMULTIPLY_ALPHA(x, y)   ((((x) << 16) - ((x) << 9) + (x)) / ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x)))
 
#define OFFSET(x)   offsetof(OverlayContext, x)
 
#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 

Enumerations

enum  var_name {
  VAR_CH, VAR_N, VAR_NB_IN_CHANNELS, VAR_NB_OUT_CHANNELS,
  VAR_T, VAR_S, VAR_VARS_NB, VAR_B1,
  VAR_B2, VAR_S1, VAR_S2, VAR_T1,
  VAR_T2, VAR_NB, VAR_TB, VAR_PTS,
  VAR_START_PTS, VAR_PREV_PTS, VAR_PREV_SELECTED_PTS, VAR_T,
  VAR_START_T, VAR_PREV_T, VAR_PREV_SELECTED_T, VAR_PICT_TYPE,
  VAR_I, VAR_P, VAR_B, VAR_S,
  VAR_SI, VAR_SP, VAR_BI, VAR_PICT_TYPE_I,
  VAR_PICT_TYPE_P, VAR_PICT_TYPE_B, VAR_PICT_TYPE_S, VAR_PICT_TYPE_SI,
  VAR_PICT_TYPE_SP, VAR_PICT_TYPE_BI, VAR_INTERLACE_TYPE, VAR_INTERLACE_TYPE_P,
  VAR_INTERLACE_TYPE_T, VAR_INTERLACE_TYPE_B, VAR_CONSUMED_SAMPLES_N, VAR_SAMPLES_N,
  VAR_SAMPLE_RATE, VAR_N, VAR_SELECTED_N, VAR_PREV_SELECTED_N,
  VAR_KEY, VAR_POS, VAR_SCENE, VAR_VARS_NB,
  VAR_FRAME_RATE, VAR_INTERLACED, VAR_N, VAR_NB_CONSUMED_SAMPLES,
  VAR_NB_SAMPLES, VAR_POS, VAR_PREV_INPTS, VAR_PREV_INT,
  VAR_PREV_OUTPTS, VAR_PREV_OUTT, VAR_PTS, VAR_SAMPLE_RATE,
  VAR_STARTPTS, VAR_STARTT, VAR_T, VAR_TB,
  VAR_RTCTIME, VAR_RTCSTART, VAR_S, VAR_SR,
  VAR_VARS_NB, VAR_AVTB, VAR_INTB, VAR_SR,
  VAR_VARS_NB, VAR_W, VAR_H, VAR_A,
  VAR_DAR, VAR_SAR, VAR_HSUB, VAR_VSUB,
  VARS_NB, VAR_W, VAR_H, VAR_CW,
  VAR_CH, VAR_HSUB, VAR_VSUB, VARS_NB,
  VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH,
  VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH,
  VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB,
  VAR_VSUB, VAR_X, VAR_Y, VAR_N,
  VAR_POS, VAR_T, VAR_VARS_NB, VAR_DAR,
  VAR_HSUB, VAR_VSUB, VAR_IN_H, VAR_IH,
  VAR_IN_W, VAR_IW, VAR_SAR, VAR_X,
  VAR_Y, VAR_H, VAR_W, VAR_T,
  VAR_MAX, VARS_NB, VAR_DAR, VAR_HSUB,
  VAR_VSUB, VAR_LINE_H, VAR_LH, VAR_MAIN_H,
  VAR_h, VAR_H, VAR_MAIN_W, VAR_w,
  VAR_W, VAR_MAX_GLYPH_A, VAR_ASCENT, VAR_MAX_GLYPH_D,
  VAR_DESCENT, VAR_MAX_GLYPH_H, VAR_MAX_GLYPH_W, VAR_N,
  VAR_SAR, VAR_T, VAR_TEXT_H, VAR_TH,
  VAR_TEXT_W, VAR_TW, VAR_X, VAR_Y,
  VAR_PICT_TYPE, VAR_VARS_NB, VAR_CONTRAST, VAR_BRIGHTNESS,
  VAR_SATURATION, VAR_GAMMA, VAR_GAMMA_WEIGHT, VAR_GAMMA_R,
  VAR_GAMMA_G, VAR_GAMMA_B, VAR_VARS_NB, VAR_N,
  VAR_PTS, VAR_R, VAR_T, VAR_TB,
  VAR_NB, VAR_W, VAR_H, VAR_VAL,
  VAR_MAXVAL, VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL,
  VAR_VARS_NB, VAR_MAIN_W, VAR_MW, VAR_MAIN_H,
  VAR_MH, VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H,
  VAR_OH, VAR_HSUB, VAR_VSUB, VAR_X,
  VAR_Y, VAR_N, VAR_POS, VAR_T,
  VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,
  VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,
  VAR_OH, VAR_X, VAR_Y, VAR_A,
  VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB,
  VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,
  VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,
  VAR_OH, VAR_HSUB, VAR_VSUB, VAR_N,
  VAR_T, VAR_VARS_NB, VAR_IN_W, VAR_IW,
  VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW,
  VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR,
  VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_OHSUB,
  VAR_OVSUB, VARS_NB, VAR_W, VAR_H,
  VAR_N, VAR_PTS, VAR_R, VAR_T,
  VAR_TB, VAR_NB, VAR_IN_W, VAR_IW,
  VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW,
  VAR_OUT_H, VAR_OH, VAR_IN, VAR_ON,
  VAR_DURATION, VAR_PDURATION, VAR_TIME, VAR_FRAME,
  VAR_ZOOM, VAR_PZOOM, VAR_X, VAR_PX,
  VAR_Y, VAR_PY, VAR_A, VAR_SAR,
  VAR_DAR, VAR_HSUB, VAR_VSUB, VARS_NB,
  VAR_X, VAR_Y, VAR_W, VAR_H,
  VAR_TIME, VAR_SPEED, VAR_TEMPO, VAR_ORDER,
  VAR_PATTERN, VAR_ROW, VAR_VARS_NB
}
 
enum  EOFAction { EOF_ACTION_REPEAT, EOF_ACTION_ENDALL, EOF_ACTION_PASS }
 

Functions

static av_cold void uninit (AVFilterContext *ctx)
 
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 process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_input_main (AVFilterLink *inlink)
 
static int config_input_overlay (AVFilterLink *inlink)
 
static int config_output (AVFilterLink *outlink)
 
static void blend_image (AVFilterContext *ctx, AVFrame *dst, const AVFrame *src, int x, int y)
 Blend image in src to destination buffer dst at position (x, y).
 
static AVFrame * do_blend (AVFilterContext *ctx, AVFrame *mainpic, const AVFrame *second)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *inpicref)
 
static int request_frame (AVFilterLink *outlink)
 
static av_cold int init (AVFilterContext *ctx)
 
 AVFILTER_DEFINE_CLASS (overlay)
 

Variables

static const char *const var_names []
 
static const char *const eof_action_str []
 
static enum AVPixelFormat alpha_pix_fmts []
 
static const AVOption overlay_options []
 
static const AVFilterPad avfilter_vf_overlay_inputs []
 
static const AVFilterPad avfilter_vf_overlay_outputs []
 
AVFilter ff_vf_overlay
 

Detailed Description

overlay one video on top of another

Definition in file vf_overlay.c.

Macro Definition Documentation

#define MAIN   0

Definition at line 83 of file vf_overlay.c.

Referenced by config_input_overlay(), config_output(), Faac_encode_init(), and query_formats().

#define OVERLAY   1

Definition at line 84 of file vf_overlay.c.

Referenced by avfilter_register_all(), config_input_overlay(), and query_formats().

#define R   0

Definition at line 86 of file vf_overlay.c.

#define G   1

Definition at line 87 of file vf_overlay.c.

#define B   2

Definition at line 88 of file vf_overlay.c.

#define A   3

Definition at line 89 of file vf_overlay.c.

#define Y   0

Definition at line 91 of file vf_overlay.c.

#define U   1

Definition at line 92 of file vf_overlay.c.

#define V   2

Definition at line 93 of file vf_overlay.c.

#define FAST_DIV255 (   x)    ((((x) + 128) * 257) >> 16)

Definition at line 353 of file vf_overlay.c.

Referenced by blend_image().

#define UNPREMULTIPLY_ALPHA (   x,
  y 
)    ((((x) << 16) - ((x) << 9) + (x)) / ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x)))

Definition at line 359 of file vf_overlay.c.

Referenced by blend_image().

#define OFFSET (   x)    offsetof(OverlayContext, x)

Definition at line 612 of file vf_overlay.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 613 of file vf_overlay.c.

Enumeration Type Documentation

enum var_name
Enumerator:
VAR_CH 
VAR_N 
VAR_NB_IN_CHANNELS 
VAR_NB_OUT_CHANNELS 
VAR_T 
VAR_S 
VAR_VARS_NB 
VAR_B1 
VAR_B2 
VAR_S1 
VAR_S2 
VAR_T1 
VAR_T2 
VAR_NB 
VAR_TB 
VAR_PTS 
VAR_START_PTS 
VAR_PREV_PTS 
VAR_PREV_SELECTED_PTS 
VAR_T 
VAR_START_T 
VAR_PREV_T 
VAR_PREV_SELECTED_T 
VAR_PICT_TYPE 
VAR_I 
VAR_P 
VAR_B 
VAR_S 
VAR_SI 
VAR_SP 
VAR_BI 
VAR_PICT_TYPE_I 
VAR_PICT_TYPE_P 
VAR_PICT_TYPE_B 
VAR_PICT_TYPE_S 
VAR_PICT_TYPE_SI 
VAR_PICT_TYPE_SP 
VAR_PICT_TYPE_BI 
VAR_INTERLACE_TYPE 
VAR_INTERLACE_TYPE_P 
VAR_INTERLACE_TYPE_T 
VAR_INTERLACE_TYPE_B 
VAR_CONSUMED_SAMPLES_N 
VAR_SAMPLES_N 
VAR_SAMPLE_RATE 
VAR_N 
VAR_SELECTED_N 
VAR_PREV_SELECTED_N 
VAR_KEY 
VAR_POS 
VAR_SCENE 
VAR_VARS_NB 
VAR_FRAME_RATE 
VAR_INTERLACED 
VAR_N 
VAR_NB_CONSUMED_SAMPLES 
VAR_NB_SAMPLES 
VAR_POS 
VAR_PREV_INPTS 
VAR_PREV_INT 
VAR_PREV_OUTPTS 
VAR_PREV_OUTT 
VAR_PTS 
VAR_SAMPLE_RATE 
VAR_STARTPTS 
VAR_STARTT 
VAR_T 
VAR_TB 
VAR_RTCTIME 
VAR_RTCSTART 
VAR_S 
VAR_SR 
VAR_VARS_NB 
VAR_AVTB 
VAR_INTB 
VAR_SR 
VAR_VARS_NB 
VAR_W 
VAR_H 
VAR_A 
VAR_DAR 
VAR_SAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_W 
VAR_H 
VAR_CW 
VAR_CH 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_X 
VAR_Y 
VAR_N 
VAR_POS 
VAR_T 
VAR_VARS_NB 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_IN_H 
VAR_IH 
VAR_IN_W 
VAR_IW 
VAR_SAR 
VAR_X 
VAR_Y 
VAR_H 
VAR_W 
VAR_T 
VAR_MAX 
VARS_NB 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_LINE_H 
VAR_LH 
VAR_MAIN_H 
VAR_h 
VAR_H 
VAR_MAIN_W 
VAR_w 
VAR_W 
VAR_MAX_GLYPH_A 
VAR_ASCENT 
VAR_MAX_GLYPH_D 
VAR_DESCENT 
VAR_MAX_GLYPH_H 
VAR_MAX_GLYPH_W 
VAR_N 
VAR_SAR 
VAR_T 
VAR_TEXT_H 
VAR_TH 
VAR_TEXT_W 
VAR_TW 
VAR_X 
VAR_Y 
VAR_PICT_TYPE 
VAR_VARS_NB 
VAR_CONTRAST 
VAR_BRIGHTNESS 
VAR_SATURATION 
VAR_GAMMA 
VAR_GAMMA_WEIGHT 
VAR_GAMMA_R 
VAR_GAMMA_G 
VAR_GAMMA_B 
VAR_VARS_NB 
VAR_N 
VAR_PTS 
VAR_R 
VAR_T 
VAR_TB 
VAR_NB 
VAR_W 
VAR_H 
VAR_VAL 
VAR_MAXVAL 
VAR_MINVAL 
VAR_NEGVAL 
VAR_CLIPVAL 
VAR_VARS_NB 
VAR_MAIN_W 
VAR_MW 
VAR_MAIN_H 
VAR_MH 
VAR_OVERLAY_W 
VAR_OW 
VAR_OVERLAY_H 
VAR_OH 
VAR_HSUB 
VAR_VSUB 
VAR_X 
VAR_Y 
VAR_N 
VAR_POS 
VAR_T 
VAR_VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_X 
VAR_Y 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_HSUB 
VAR_VSUB 
VAR_N 
VAR_T 
VAR_VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_OHSUB 
VAR_OVSUB 
VARS_NB 
VAR_W 
VAR_H 
VAR_N 
VAR_PTS 
VAR_R 
VAR_T 
VAR_TB 
VAR_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_IN 
VAR_ON 
VAR_DURATION 
VAR_PDURATION 
VAR_TIME 
VAR_FRAME 
VAR_ZOOM 
VAR_PZOOM 
VAR_X 
VAR_PX 
VAR_Y 
VAR_PY 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_X 
VAR_Y 
VAR_W 
VAR_H 
VAR_TIME 
VAR_SPEED 
VAR_TEMPO 
VAR_ORDER 
VAR_PATTERN 
VAR_ROW 
VAR_VARS_NB 

Definition at line 58 of file vf_overlay.c.

enum EOFAction
Enumerator:
EOF_ACTION_REPEAT 
EOF_ACTION_ENDALL 
EOF_ACTION_PASS 

Definition at line 73 of file vf_overlay.c.

Function Documentation

static av_cold void uninit ( AVFilterContext *  ctx)
static

Definition at line 123 of file vf_overlay.c.

static int normalize_xy ( double  d,
int  chroma_sub 
)
inlinestatic

Definition at line 132 of file vf_overlay.c.

Referenced by eval_expr().

static void eval_expr ( AVFilterContext *  ctx)
static

Definition at line 139 of file vf_overlay.c.

Referenced by config_input_overlay(), do_blend(), and process_command().

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

Definition at line 150 of file vf_overlay.c.

Referenced by config_input_overlay(), and process_command().

static int process_command ( AVFilterContext *  ctx,
const char *  cmd,
const char *  args,
char *  res,
int  res_len,
int  flags 
)
static

Definition at line 171 of file vf_overlay.c.

static int query_formats ( AVFilterContext *  ctx)
static

Definition at line 196 of file vf_overlay.c.

static int config_input_main ( AVFilterLink *  inlink)
static

Definition at line 271 of file vf_overlay.c.

static int config_input_overlay ( AVFilterLink *  inlink)
static

Definition at line 287 of file vf_overlay.c.

static int config_output ( AVFilterLink *  outlink)
static

Definition at line 335 of file vf_overlay.c.

static void blend_image ( AVFilterContext *  ctx,
AVFrame *  dst,
const AVFrame *  src,
int  x,
int  y 
)
static

Blend image in src to destination buffer dst at position (x, y).

< the amount of overlay to blend on to main

< the amount of overlay to blend on to main

Definition at line 364 of file vf_overlay.c.

Referenced by do_blend().

static AVFrame* do_blend ( AVFilterContext *  ctx,
AVFrame *  mainpic,
const AVFrame *  second 
)
static

Definition at line 552 of file vf_overlay.c.

Referenced by init().

static int filter_frame ( AVFilterLink *  inlink,
AVFrame *  inpicref 
)
static

Definition at line 577 of file vf_overlay.c.

static int request_frame ( AVFilterLink *  outlink)
static

Definition at line 584 of file vf_overlay.c.

static av_cold int init ( AVFilterContext *  ctx)
static

Definition at line 590 of file vf_overlay.c.

AVFILTER_DEFINE_CLASS ( overlay  )

Variable Documentation

const char* const var_names[]
static
Initial value:
= {
"main_w", "W",
"main_h", "H",
"overlay_w", "w",
"overlay_h", "h",
"hsub",
"vsub",
"x",
"y",
"n",
"pos",
"t",
NULL
}

Definition at line 43 of file vf_overlay.c.

Referenced by set_expr().

const char* const eof_action_str[]
static
Initial value:
= {
"repeat", "endall", "pass"
}

Definition at line 79 of file vf_overlay.c.

Referenced by config_input_overlay().

enum AVPixelFormat alpha_pix_fmts[]
static
Initial value:
= {
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA,
AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE
}

Definition at line 265 of file vf_overlay.c.

Referenced by config_input_main(), and config_input_overlay().

const AVOption overlay_options[]
static
Initial value:
= {
{ "x", "set the x expression", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, CHAR_MIN, CHAR_MAX, FLAGS },
{ "y", "set the y expression", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, CHAR_MIN, CHAR_MAX, FLAGS },
{ "eof_action", "Action to take when encountering EOF from secondary input ",
OFFSET(eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, "eof_action" },
{ "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" },
{ "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" },
{ "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, "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, "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" },
{ "rgb", "force packed RGB in input and output (deprecated)", OFFSET(allow_packed_rgb), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS },
{ "shortest", "force termination when the shortest input terminates", OFFSET(dinput.shortest), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
{ "format", "set output format", OFFSET(format), AV_OPT_TYPE_INT, {.i64=OVERLAY_FORMAT_YUV420}, 0, OVERLAY_FORMAT_NB-1, FLAGS, "format" },
{ "yuv420", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV420}, .flags = FLAGS, .unit = "format" },
{ "yuv422", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV422}, .flags = FLAGS, .unit = "format" },
{ "yuv444", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV444}, .flags = FLAGS, .unit = "format" },
{ "rgb", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_RGB}, .flags = FLAGS, .unit = "format" },
{ "repeatlast", "repeat overlay of the last overlay frame", OFFSET(dinput.repeatlast), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS },
{ NULL }
}

Definition at line 615 of file vf_overlay.c.

const AVFilterPad avfilter_vf_overlay_inputs[]
static
Initial value:
= {
{
.name = "main",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input_main,
.filter_frame = filter_frame,
.needs_writable = 1,
},
{
.name = "overlay",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input_overlay,
.filter_frame = filter_frame,
},
{ NULL }
}

Definition at line 640 of file vf_overlay.c.

const AVFilterPad avfilter_vf_overlay_outputs[]
static
Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
}

Definition at line 657 of file vf_overlay.c.

AVFilter ff_vf_overlay
Initial value:
= {
.name = "overlay",
.description = NULL_IF_CONFIG_SMALL("Overlay a video source on top of the input."),
.init = init,
.uninit = uninit,
.priv_size = sizeof(OverlayContext),
.priv_class = &overlay_class,
.query_formats = query_formats,
.process_command = process_command,
.inputs = avfilter_vf_overlay_inputs,
.outputs = avfilter_vf_overlay_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
}

Definition at line 667 of file vf_overlay.c.

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