Apply a hue/saturation filter to the input video Ported from MPlayer libmpcodecs/vf_hue.c. More...

#include <float.h>
#include "libavutil/eval.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Data Structures
struct	HueContext

Macros
#define	HUE_DEFAULT_VAL 0

#define	SAT_DEFAULT_VAL 1

#define	HUE_DEFAULT_VAL_STRING AV_STRINGIFY(HUE_DEFAULT_VAL)

#define	SAT_DEFAULT_VAL_STRING AV_STRINGIFY(SAT_DEFAULT_VAL)

#define	SAT_MIN_VAL -10

#define	SAT_MAX_VAL 10

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

#define	FLAGS AV_OPT_FLAG_VIDEO_PARAM\|AV_OPT_FLAG_FILTERING_PARAM

#define	SET_EXPRESSION(attr, name)

#define	TS2D(ts) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))

#define	TS2T(ts, tb) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))

Enumerations
enum	var_name { VAR_B1, VAR_B2, VAR_S1, VAR_S2, VAR_T1, VAR_T2, VAR_NB, VAR_N, VAR_T, VAR_S, 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_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_VARS_NB, VAR_AVTB, VAR_INTB, VAR_SR, VAR_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_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_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_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_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 }

Functions
	AVFILTER_DEFINE_CLASS (hue)

static void	compute_sin_and_cos (HueContext *hue)

static int	set_options (AVFilterContext ctx, const char args)

static av_cold int	init (AVFilterContext ctx, const char args)

static av_cold void	uninit (AVFilterContext *ctx)

static int	query_formats (AVFilterContext *ctx)

static int	config_props (AVFilterLink *inlink)

static void	process_chrominance (uint8_t udst, uint8_t vdst, const int dst_linesize, uint8_t usrc, uint8_t vsrc, const int src_linesize, int w, int h, const int32_t c, const int32_t s)

static int	filter_frame (AVFilterLink inlink, AVFilterBufferRef inpic)

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

Variables
static const char *const	var_names []

static const AVOption	hue_options []

static const AVFilterPad	hue_inputs []

static const AVFilterPad	hue_outputs []

AVFilter	avfilter_vf_hue

Detailed Description

Apply a hue/saturation filter to the input video Ported from MPlayer libmpcodecs/vf_hue.c.

Definition in file vf_hue.c.

Macro Definition Documentation

#define HUE_DEFAULT_VAL 0

Definition at line 39 of file vf_hue.c.

Referenced by init().

#define SAT_DEFAULT_VAL 1

Definition at line 40 of file vf_hue.c.

Referenced by init().

#define HUE_DEFAULT_VAL_STRING AV_STRINGIFY(HUE_DEFAULT_VAL)

Definition at line 42 of file vf_hue.c.

#define SAT_DEFAULT_VAL_STRING AV_STRINGIFY(SAT_DEFAULT_VAL)

Definition at line 43 of file vf_hue.c.

#define SAT_MIN_VAL -10

Definition at line 45 of file vf_hue.c.

Referenced by filter_frame(), and set_options().

#define SAT_MAX_VAL 10

Definition at line 46 of file vf_hue.c.

Referenced by filter_frame(), and set_options().

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

Definition at line 85 of file vf_hue.c.

#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 86 of file vf_hue.c.

#define SET_EXPRESSION	(	attr,
		name
	)

Value:

do {                                           \
    if (hue->attr##_expr) {                                                       \
        if ((ret = av_expr_parse(&hue->attr##_pexpr, hue->attr##_expr, var_names, \
                                 NULL, NULL, NULL, NULL, 0, ctx)) < 0) {          \
            av_log(ctx, AV_LOG_ERROR,                                             \
                   "Parsing failed for expression " #name "='%s'",                \
                   hue->attr##_expr);                                             \
            hue->attr##_expr  = old_##attr##_expr;                                \
            hue->attr##_pexpr = old_##attr##_pexpr;                               \
            return AVERROR(EINVAL);                                               \
        } else if (old_##attr##_pexpr) {                                          \
            av_freep(&old_##attr##_expr);                                         \
            av_expr_free(old_##attr##_pexpr);                                     \
            old_##attr##_pexpr = NULL;                                            \
        }                                                                         \
    } else {                                                                      \
        hue->attr##_expr = old_##attr##_expr;                                     \
    }                                                                             \
} while (0)

Definition at line 110 of file vf_hue.c.

Referenced by set_options().

#define TS2D ( ts ) ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))

Definition at line 307 of file vf_hue.c.

Referenced by filter_frame().

#define TS2T	(	ts,
		tb
	)	((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))

Definition at line 308 of file vf_hue.c.

Referenced by filter_frame().

Enumeration Type Documentation

enum var_name

Enumerator:

VAR_B1
VAR_B2
VAR_S1
VAR_S2
VAR_T1
VAR_T2
VAR_NB
VAR_N
VAR_T
VAR_S
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_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_VARS_NB
VAR_AVTB
VAR_INTB
VAR_SR
VAR_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_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_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_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_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 57 of file vf_hue.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( hue )

static void compute_sin_and_cos ( HueContext * hue )

inlinestatic

Definition at line 99 of file vf_hue.c.

Referenced by filter_frame(), and set_options().

static int set_options	(	AVFilterContext *	ctx,
		const char *	args
	)

inlinestatic

Definition at line 130 of file vf_hue.c.

Referenced by init(), and process_command().

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

static

Definition at line 207 of file vf_hue.c.

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 223 of file vf_hue.c.

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 237 of file vf_hue.c.

static int config_props ( AVFilterLink * inlink )

static

Definition at line 252 of file vf_hue.c.

static void process_chrominance	(	uint8_t *	udst,
		uint8_t *	vdst,
		const int	dst_linesize,
		uint8_t *	usrc,
		uint8_t *	vsrc,
		const int	src_linesize,
		int	w,
		int	h,
		const int32_t	c,
		const int32_t	s
	)

static

Definition at line 268 of file vf_hue.c.

Referenced by filter_frame().

static int filter_frame	(	AVFilterLink *	inlink,
		AVFilterBufferRef *	inpic
	)

static

Definition at line 310 of file vf_hue.c.

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

static

Definition at line 368 of file vf_hue.c.

Variable Documentation

const char* const var_names[]

static

Initial value:

= {
    "n",   
    "pts", 
    "r",   
    "t",   
    "tb",  
    NULL
}

Definition at line 48 of file vf_hue.c.

const AVOption hue_options[]

static

Initial value:

= {
    { "h", "set the hue angle degrees expression", OFFSET(hue_deg_expr), AV_OPT_TYPE_STRING,
      { .str = NULL }, .flags = FLAGS },
    { "H", "set the hue angle radians expression", OFFSET(hue_expr), AV_OPT_TYPE_STRING,
      { .str = NULL }, .flags = FLAGS },
    { "s", "set the saturation expression", OFFSET(saturation_expr), AV_OPT_TYPE_STRING,
      { .str = NULL }, .flags = FLAGS },
    { NULL }
}

Definition at line 87 of file vf_hue.c.

const AVFilterPad hue_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_props,
        .min_perms    = AV_PERM_READ,
    },
    { NULL }
}

Definition at line 377 of file vf_hue.c.

const AVFilterPad hue_outputs[]

static

Initial value:

= {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
}

Definition at line 388 of file vf_hue.c.

AVFilter avfilter_vf_hue

Initial value:

= {
    .name        = "hue",
    .description = NULL_IF_CONFIG_SMALL("Adjust the hue and saturation of the input video."),
    .priv_size = sizeof(HueContext),
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .process_command = process_command,
    .inputs          = hue_inputs,
    .outputs         = hue_outputs,
    .priv_class      = &hue_class,
}

Definition at line 396 of file vf_hue.c.

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation