libavfilter/vf_lut.c File Reference

Compute a look-up table for binding the input value to the output value, and apply it to input video. More...

#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"

Go to the source code of this file.

Data Structures

struct LutContext

Defines

#define Y   0

#define U   1

#define V   2

#define R   0

#define G   1

#define B   2

#define A   3

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

#define YUV_FORMATS

#define RGB_FORMATS

#define DEFINE_LUT_FILTER(name_, description_, init_)

Enumerations

enum var_name {
  VAR_E, VAR_PHI, VAR_PI, 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_N, VAR_POS, VAR_T,
  VAR_VARS_NB, VAR_E, VAR_PHI, VAR_PI,
  VAR_W, VAR_H, VAR_VAL, VAR_MAXVAL,
  VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL, VAR_VARS_NB,
  VAR_E, VAR_PHI, VAR_PI, VAR_MAIN_W,
  VAR_MW, VAR_MAIN_H, VAR_MH, VAR_OVERLAY_W,
  VAR_OW, VAR_OVERLAY_H, VAR_OH, VAR_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_X,
  VAR_Y, VAR_A, VAR_HSUB, VAR_VSUB,
  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_HSUB, VAR_VSUB, VARS_NB,
  VAR_E, VAR_PHI, VAR_PI, 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_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_N, VAR_SELECTED_N, VAR_PREV_SELECTED_N, VAR_KEY,
  VAR_POS, VAR_VARS_NB, VAR_E, VAR_INTERLACED,
  VAR_N, VAR_PHI, VAR_PI, VAR_POS,
  VAR_PREV_INPTS, VAR_PREV_OUTPTS, VAR_PTS, VAR_STARTPTS,
  VAR_TB, VAR_VARS_NB, VAR_E, VAR_PHI,
  VAR_PI, VAR_AVTB, VAR_INTB, VAR_VARS_NB,
  VAR_E, VAR_PHI, VAR_PI, VAR_AVTB,
  VAR_VARS_NB
}

Functions

static const char * lut_get_name (void *ctx)

static int init (AVFilterContext *ctx, const char *args, void *opaque)

static av_cold void uninit (AVFilterContext *ctx)

static int query_formats (AVFilterContext *ctx)

static int pix_fmt_is_in (enum PixelFormat pix_fmt, enum PixelFormat *pix_fmts)

static double clip (void *opaque, double val)

Clip value val in the minval - maxval range.

static double compute_gammaval (void *opaque, double gamma)

Compute gamma correction for value val, assuming the minval-maxval range, val is clipped to a value contained in the same interval.

static int config_props (AVFilterLink *inlink)

static void draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)

DEFINE_LUT_FILTER (lut,"Compute and apply a lookup table to the RGB/YUV input video.", init)

DEFINE_LUT_FILTER (lutyuv,"Compute and apply a lookup table to the YUV input video.", init)

DEFINE_LUT_FILTER (lutrgb,"Compute and apply a lookup table to the RGB input video.", init)

Variables

static const char * var_names []

static const AVOption lut_options []

static const AVClass lut_class

static enum PixelFormat yuv_pix_fmts [] = { YUV_FORMATS, PIX_FMT_NONE }

static enum PixelFormat rgb_pix_fmts [] = { RGB_FORMATS, PIX_FMT_NONE }

static enum PixelFormat all_pix_fmts [] = { RGB_FORMATS, YUV_FORMATS, PIX_FMT_NONE }

static double(*const funcs1 [])(void *, double)

static const char *const funcs1_names []

Detailed Description

Compute a look-up table for binding the input value to the output value, and apply it to input video.

Definition in file vf_lut.c.

Define Documentation

#define A 3

Definition at line 79 of file vf_lut.c.

#define B 2

Definition at line 78 of file vf_lut.c.

#define DEFINE_LUT_FILTER	(	name_,
		description_,
		init_	)

Value:

AVFilter avfilter_vf_##name_ = {                                    \
        .name          = #name_,                                        \
        .description   = NULL_IF_CONFIG_SMALL(description_),            \
        .priv_size     = sizeof(LutContext),                            \
                                                                        \
        .init          = init_,                                         \
        .uninit        = uninit,                                        \
        .query_formats = query_formats,                                 \
                                                                        \
        .inputs    = (AVFilterPad[]) {{ .name            = "default",   \
                                        .type            = AVMEDIA_TYPE_VIDEO, \
                                        .draw_slice      = draw_slice,  \
                                        .config_props    = config_props, \
                                        .min_perms       = AV_PERM_READ, }, \
                                      { .name = NULL}},                 \
        .outputs   = (AVFilterPad[]) {{ .name            = "default",   \
                                        .type            = AVMEDIA_TYPE_VIDEO, }, \
                                      { .name = NULL}},                 \
    }

Definition at line 346 of file vf_lut.c.

#define G 1

Definition at line 77 of file vf_lut.c.

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

Definition at line 81 of file vf_lut.c.

#define R 0

Definition at line 76 of file vf_lut.c.

#define RGB_FORMATS

Value:

PIX_FMT_ARGB,         PIX_FMT_RGBA,         \
    PIX_FMT_ABGR,         PIX_FMT_BGRA,         \
    PIX_FMT_RGB24,        PIX_FMT_BGR24

Definition at line 148 of file vf_lut.c.

#define U 1

Definition at line 74 of file vf_lut.c.

Referenced by altivec_uyvy_rgb32(), asf_read_file_properties(), aura_decode_frame(), av_adler32_update(), av_audio_convert(), av_normalize1_sf(), av_reduce(), avi_read_header(), bfin_prepare_coefficients(), check_mv(), clipf_c_one(), config_input(), config_props(), decode_exponents(), decode_frame(), decode_header(), decode_hrd_parameters(), decode_main_header(), decode_mb_i(), decode_residual(), decode_residual_inter(), decode_scalefactors(), decode_slice_header(), decode_spectrum_and_dequant(), decode_vui_parameters(), draw_slice(), dv_init_enc_block(), ff_adts_decode_extradata(), ff_asf_get_packet(), ff_dirac_parse_sequence_header(), ff_get_cpu_flags_x86(), ff_h263_decode_frame(), ff_h264_check_intra_pred_mode(), ff_h264_decode_seq_parameter_set(), ff_imdct_half_3dn2(), ff_ivi_decode_blocks(), ff_yuv2packedX_altivec(), filter(), flt16_even(), flt16_round(), flt16_trunc(), init(), intra_predict(), parse_source_parameters(), pred_spatial_direct_motion(), pRNG(), put_bits(), put_float(), qdm2_decode_init(), read_quant_tables(), rgb16_32ToUV_half_c_template(), rgb24toyv12_c(), rgb48ToUV_half_c_template(), rv30_decode_intra_types(), rv30_decode_mb_info(), rv34_mc(), rv34_output_macroblock(), sox_read_header(), svq3_decode_block(), svq3_decode_mb(), svq3_decode_slice_header(), tm2_decode_blocks(), tm2_hi_res_block(), tm2_low_res_block(), tm2_med_res_block(), tm2_motion_block(), tm2_null_res_block(), tm2_still_block(), tm2_update_block(), unpack_vlcs(), vector_clipf_c_opposite_sign(), VMUL4S(), wv_get_value(), xan_decode_chroma(), yuv2422_1_c_template(), yuv2422_2_c_template(), yuv2422_X_c_template(), yuv2rgb48_1_c_template(), yuv2rgb48_2_c_template(), and yuv2rgb48_X_c_template().

#define V 2

Definition at line 75 of file vf_lut.c.

#define Y 0

#define YUV_FORMATS

Value:

PIX_FMT_YUV444P,  PIX_FMT_YUV422P,  PIX_FMT_YUV420P,    \
    PIX_FMT_YUV411P,  PIX_FMT_YUV410P,  PIX_FMT_YUV440P,    \
    PIX_FMT_YUVA420P,                                       \
    PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ420P,   \
    PIX_FMT_YUVJ440P

Definition at line 141 of file vf_lut.c.

Enumeration Type Documentation

enum var_name

Enumerator:

VAR_E
VAR_PHI
VAR_PI
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_N
VAR_POS
VAR_T
VAR_VARS_NB
VAR_E
VAR_PHI
VAR_PI
VAR_W
VAR_H
VAR_VAL
VAR_MAXVAL
VAR_MINVAL
VAR_NEGVAL
VAR_CLIPVAL
VAR_VARS_NB
VAR_E
VAR_PHI
VAR_PI
VAR_MAIN_W
VAR_MW
VAR_MAIN_H
VAR_MH
VAR_OVERLAY_W
VAR_OW
VAR_OVERLAY_H
VAR_OH
VAR_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_X
VAR_Y
VAR_A
VAR_HSUB
VAR_VSUB
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_HSUB
VAR_VSUB
VARS_NB
VAR_E
VAR_PHI
VAR_PI
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_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_N
VAR_SELECTED_N
VAR_PREV_SELECTED_N
VAR_KEY
VAR_POS
VAR_VARS_NB
VAR_E
VAR_INTERLACED
VAR_N
VAR_PHI
VAR_PI
VAR_POS
VAR_PREV_INPTS
VAR_PREV_OUTPTS
VAR_PTS
VAR_STARTPTS
VAR_TB
VAR_VARS_NB
VAR_E
VAR_PHI
VAR_PI
VAR_AVTB
VAR_INTB
VAR_VARS_NB
VAR_E
VAR_PHI
VAR_PI
VAR_AVTB
VAR_VARS_NB

Definition at line 46 of file vf_lut.c.

Function Documentation

static double clip	(	void *	opaque,
		double	val
	)			`[static]`

Clip value val in the minval - maxval range.

Definition at line 181 of file vf_lut.c.

Referenced by rv40_loop_filter(), and vc1_filter_line().

static double compute_gammaval	(	void *	opaque,
		double	gamma
	)			`[static]`

Compute gamma correction for value val, assuming the minval-maxval range, val is clipped to a value contained in the same interval.

Definition at line 194 of file vf_lut.c.

static int config_props ( AVFilterLink * inlink ) [static]

Definition at line 216 of file vf_lut.c.

DEFINE_LUT_FILTER	(	lutrgb	,
		"Compute and apply a lookup table to the RGB input video."	,
		init
	)

DEFINE_LUT_FILTER	(	lutyuv	,
		"Compute and apply a lookup table to the YUV input video."	,
		init
	)

DEFINE_LUT_FILTER	(	lut	,
		"Compute and apply a lookup table to the RGB/YUV input video."	,
		init
	)

static void draw_slice	(	AVFilterLink *	inlink,
		int	y,
		int	h,
		int	slice_dir
	)			`[static]`

Definition at line 302 of file vf_lut.c.

static int init	(	AVFilterContext *	ctx,
		const char *	args,
		void *	opaque
	)			`[static]`

Definition at line 109 of file vf_lut.c.

static const char* lut_get_name ( void * ctx ) [static]

Definition at line 98 of file vf_lut.c.

static int pix_fmt_is_in	(	enum PixelFormat	pix_fmt,
		enum PixelFormat *	pix_fmts
	)			`[static]`

Definition at line 168 of file vf_lut.c.

Referenced by config_props().

static int query_formats ( AVFilterContext * ctx ) [static]

Definition at line 157 of file vf_lut.c.

static av_cold void uninit ( AVFilterContext * ctx ) [static]

Definition at line 129 of file vf_lut.c.

Variable Documentation

enum PixelFormat all_pix_fmts[] = { RGB_FORMATS, YUV_FORMATS, PIX_FMT_NONE } [static]

Definition at line 155 of file vf_lut.c.

Referenced by query_formats().

double(* const funcs1[])(void *, double) [static]

Initial value:

 {
    (void *)clip,
    (void *)compute_gammaval,
    NULL
}

Referenced by av_expr_parse(), av_expr_parse_and_eval(), av_parse_and_eval_expr(), av_parse_expr(), and config_props().

const char* const funcs1_names[] [static]

Initial value:

 {
    "clip",
    "gammaval",
    NULL
}

Definition at line 210 of file vf_lut.c.

const AVClass lut_class [static]

Initial value:

 {
    "LutContext",
    lut_get_name,
    lut_options
}

Definition at line 103 of file vf_lut.c.

const AVOption lut_options[] [static]

Initial value:

 {
    {"c0", "set component #0 expression", OFFSET(comp_expr_str[0]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"c1", "set component #1 expression", OFFSET(comp_expr_str[1]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"c2", "set component #2 expression", OFFSET(comp_expr_str[2]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"c3", "set component #3 expression", OFFSET(comp_expr_str[3]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"y",  "set Y expression", OFFSET(comp_expr_str[Y]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"u",  "set U expression", OFFSET(comp_expr_str[U]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"v",  "set V expression", OFFSET(comp_expr_str[V]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"r",  "set R expression", OFFSET(comp_expr_str[R]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"g",  "set G expression", OFFSET(comp_expr_str[G]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"b",  "set B expression", OFFSET(comp_expr_str[B]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {"a",  "set A expression", OFFSET(comp_expr_str[A]),  FF_OPT_TYPE_STRING, {.str="val"}, CHAR_MIN, CHAR_MAX},
    {NULL},
}

Definition at line 83 of file vf_lut.c.

enum PixelFormat rgb_pix_fmts[] = { RGB_FORMATS, PIX_FMT_NONE } [static]

Definition at line 154 of file vf_lut.c.

Referenced by config_props(), and query_formats().

const char* var_names[] [static]

Initial value:

 {
    "E",
    "PHI",
    "PI",
    "w",        
    "h",        
    "val",      
    "maxval",   
    "minval",   
    "negval",   
    "clipval",
    NULL
}

Definition at line 32 of file vf_lut.c.

enum PixelFormat yuv_pix_fmts[] = { YUV_FORMATS, PIX_FMT_NONE } [static]

Definition at line 153 of file vf_lut.c.

Referenced by config_props(), and query_formats().


Data Structures
struct	LutContext
Defines
#define	Y 0
#define	U 1
#define	V 2
#define	R 0
#define	G 1
#define	B 2
#define	A 3
#define	OFFSET(x) offsetof(LutContext, x)
#define	YUV_FORMATS
#define	RGB_FORMATS
#define	DEFINE_LUT_FILTER(name_, description_, init_)
Enumerations
enum	var_name { VAR_E, VAR_PHI, VAR_PI, 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_N, VAR_POS, VAR_T, VAR_VARS_NB, VAR_E, VAR_PHI, VAR_PI, VAR_W, VAR_H, VAR_VAL, VAR_MAXVAL, VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL, VAR_VARS_NB, VAR_E, VAR_PHI, VAR_PI, VAR_MAIN_W, VAR_MW, VAR_MAIN_H, VAR_MH, VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H, VAR_OH, VAR_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_X, VAR_Y, VAR_A, VAR_HSUB, VAR_VSUB, 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_HSUB, VAR_VSUB, VARS_NB, VAR_E, VAR_PHI, VAR_PI, 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_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_N, VAR_SELECTED_N, VAR_PREV_SELECTED_N, VAR_KEY, VAR_POS, VAR_VARS_NB, VAR_E, VAR_INTERLACED, VAR_N, VAR_PHI, VAR_PI, VAR_POS, VAR_PREV_INPTS, VAR_PREV_OUTPTS, VAR_PTS, VAR_STARTPTS, VAR_TB, VAR_VARS_NB, VAR_E, VAR_PHI, VAR_PI, VAR_AVTB, VAR_INTB, VAR_VARS_NB, VAR_E, VAR_PHI, VAR_PI, VAR_AVTB, VAR_VARS_NB }
Functions
static const char *	lut_get_name (void *ctx)
static int	init (AVFilterContext ctx, const char args, void *opaque)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	pix_fmt_is_in (enum PixelFormat pix_fmt, enum PixelFormat *pix_fmts)
static double	clip (void *opaque, double val)
	Clip value val in the minval - maxval range.
static double	compute_gammaval (void *opaque, double gamma)
	Compute gamma correction for value val, assuming the minval-maxval range, val is clipped to a value contained in the same interval.
static int	config_props (AVFilterLink *inlink)
static void	draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
	DEFINE_LUT_FILTER (lut,"Compute and apply a lookup table to the RGB/YUV input video.", init)
	DEFINE_LUT_FILTER (lutyuv,"Compute and apply a lookup table to the YUV input video.", init)
	DEFINE_LUT_FILTER (lutrgb,"Compute and apply a lookup table to the RGB input video.", init)
Variables
static const char *	var_names []
static const AVOption	lut_options []
static const AVClass	lut_class
static enum PixelFormat	yuv_pix_fmts [] = { YUV_FORMATS, PIX_FMT_NONE }
static enum PixelFormat	rgb_pix_fmts [] = { RGB_FORMATS, PIX_FMT_NONE }
static enum PixelFormat	all_pix_fmts [] = { RGB_FORMATS, YUV_FORMATS, PIX_FMT_NONE }
static double(*const	funcs1 [])(void *, double)
static const char *const	funcs1_names []