f_metadata.c File Reference

filter for manipulating frame metadata More...

#include <float.h>
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "audio.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	MetadataContext

Macros
#define	OFFSET(x)   offsetof(MetadataContext, x)
#define	DEFINE_OPTIONS(filt_name, FLAGS)

Enumerations
enum	MetadataMode {   METADATA_SELECT, METADATA_ADD, METADATA_MODIFY, METADATA_DELETE,   METADATA_PRINT, METADATA_NB }
enum	MetadataFunction {   METADATAF_SAME_STR, METADATAF_STARTS_WITH, METADATAF_LESS, METADATAF_EQUAL,   METADATAF_GREATER, METADATAF_EXPR, METADATAF_NB }
enum	var_name {   VAR_CH, VAR_N, VAR_NB_IN_CHANNELS, VAR_NB_OUT_CHANNELS,   VAR_T, VAR_S, VAR_VARS_NB, VAR_VALUE1,   VAR_VALUE2, VAR_VARS_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_CONCATDEC_SELECT,   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_N,   VAR_POS, VAR_R, VAR_T, VAR_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_PI,   VAR_PHI, VAR_E, VAR_IN_W, VAR_IW,   VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW,   VAR_OUT_H, VAR_OH, VAR_A, VAR_DAR,   VAR_SAR, 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_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_X, VAR_Y, VAR_W, VAR_H,   VAR_TIME, VAR_SPEED, VAR_TEMPO, VAR_ORDER,   VAR_PATTERN, VAR_ROW, VAR_VARS_NB }

Functions
static int	same_str (MetadataContext *s, const char *value1, const char *value2)
static int	starts_with (MetadataContext *s, const char *value1, const char *value2)
static int	equal (MetadataContext *s, const char *value1, const char *value2)
static int	less (MetadataContext *s, const char *value1, const char *value2)
static int	greater (MetadataContext *s, const char *value1, const char *value2)
static int	parse_expr (MetadataContext *s, const char *value1, const char *value2)
static void	print_log (AVFilterContext *ctx, const char *msg,...)
static void	print_file (AVFilterContext *ctx, const char *msg,...)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFrame *frame)

Variables
static const char *const	var_names []

Detailed Description

filter for manipulating frame metadata

Definition in file f_metadata.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(MetadataContext, x)

Definition at line 91 of file f_metadata.c.

#define DEFINE_OPTIONS	(		filt_name,
			FLAGS
	)

Value:

static const AVOption filt_name##_options[] = { \
    { "mode", "set a mode of operation", OFFSET(mode),   AV_OPT_TYPE_INT,    {.i64 = 0 }, 0, METADATA_NB-1, FLAGS, "mode" }, \
    {   "select", "select frame",        0,              AV_OPT_TYPE_CONST,  {.i64 = METADATA_SELECT }, 0, 0, FLAGS, "mode" }, \
    {   "add",    "add new metadata",    0,              AV_OPT_TYPE_CONST,  {.i64 = METADATA_ADD },    0, 0, FLAGS, "mode" }, \
    {   "modify", "modify metadata",     0,              AV_OPT_TYPE_CONST,  {.i64 = METADATA_MODIFY }, 0, 0, FLAGS, "mode" }, \
    {   "delete", "delete metadata",     0,              AV_OPT_TYPE_CONST,  {.i64 = METADATA_DELETE }, 0, 0, FLAGS, "mode" }, \
    {   "print",  "print metadata",      0,              AV_OPT_TYPE_CONST,  {.i64 = METADATA_PRINT },  0, 0, FLAGS, "mode" }, \
    { "key",   "set metadata key",       OFFSET(key),    AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, FLAGS }, \
    { "value", "set metadata value",     OFFSET(value),  AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, FLAGS }, \
    { "function", "function for comparing values", OFFSET(function), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, METADATAF_NB-1, FLAGS, "function" }, \
    {   "same_str",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = METADATAF_SAME_STR },    0, 3, FLAGS, "function" }, \
    {   "starts_with", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = METADATAF_STARTS_WITH }, 0, 0, FLAGS, "function" }, \
    {   "less",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = METADATAF_LESS    },     0, 3, FLAGS, "function" }, \
    {   "equal",       NULL, 0, AV_OPT_TYPE_CONST, {.i64 = METADATAF_EQUAL   },     0, 3, FLAGS, "function" }, \
    {   "greater",     NULL, 0, AV_OPT_TYPE_CONST, {.i64 = METADATAF_GREATER },     0, 3, FLAGS, "function" }, \
    {   "expr",        NULL, 0, AV_OPT_TYPE_CONST, {.i64 = METADATAF_EXPR    },     0, 3, FLAGS, "function" }, \
    { "expr", "set expression for expr function", OFFSET(expr_str), AV_OPT_TYPE_STRING, {.str = NULL }, 0, 0, FLAGS }, \
    { "file", "set file where to print metadata information", OFFSET(file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS }, \
    { NULL } \
}

Definition at line 92 of file f_metadata.c.

Enumeration Type Documentation

enum MetadataMode

Enumerator
METADATA_SELECT
METADATA_ADD
METADATA_MODIFY
METADATA_DELETE
METADATA_PRINT
METADATA_NB

Definition at line 40 of file f_metadata.c.

enum MetadataFunction

Enumerator
METADATAF_SAME_STR
METADATAF_STARTS_WITH
METADATAF_LESS
METADATAF_EQUAL
METADATAF_GREATER
METADATAF_EXPR
METADATAF_NB

Definition at line 49 of file f_metadata.c.

enum var_name

Enumerator
VAR_CH
VAR_N
VAR_NB_IN_CHANNELS
VAR_NB_OUT_CHANNELS
VAR_T
VAR_S
VAR_VARS_NB
VAR_VALUE1
VAR_VALUE2
VAR_VARS_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_CONCATDEC_SELECT
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_N
VAR_POS
VAR_R
VAR_T
VAR_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_PI
VAR_PHI
VAR_E
VAR_IN_W
VAR_IW
VAR_IN_H
VAR_IH
VAR_OUT_W
VAR_OW
VAR_OUT_H
VAR_OH
VAR_A
VAR_DAR
VAR_SAR
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_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_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 65 of file f_metadata.c.

Function Documentation

static int same_str ( MetadataContext *  s, const char *  value1, const char *  value2  )

static

Definition at line 114 of file f_metadata.c.

Referenced by init().

static int starts_with ( MetadataContext *  s, const char *  value1, const char *  value2  )

static

Definition at line 119 of file f_metadata.c.

Referenced by init().

static int equal ( MetadataContext *  s, const char *  value1, const char *  value2  )

static

Definition at line 124 of file f_metadata.c.

Referenced by init().

static int less ( MetadataContext *  s, const char *  value1, const char *  value2  )

static

Definition at line 134 of file f_metadata.c.

Referenced by init().

static int greater ( MetadataContext *  s, const char *  value1, const char *  value2  )

static

Definition at line 144 of file f_metadata.c.

Referenced by init().

static int parse_expr ( MetadataContext *  s, const char *  value1, const char *  value2  )

static

Definition at line 154 of file f_metadata.c.

Referenced by init().

static void print_log ( AVFilterContext *  ctx, const char *  msg,   ...  )

static

Definition at line 167 of file f_metadata.c.

Referenced by init().

static void print_file ( AVFilterContext *  ctx, const char *  msg,   ...  )

static

Definition at line 177 of file f_metadata.c.

Referenced by init().

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 188 of file f_metadata.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 261 of file f_metadata.c.

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

static

Definition at line 270 of file f_metadata.c.

Variable Documentation

const char* const var_names[]

static

Initial value:

= {
    "VALUE1",
    "VALUE2",
    NULL
}

Definition at line 59 of file f_metadata.c.

Referenced by init().