libavfilter/vf_hue.c File Reference

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"

Go to the source code of this file.

Data Structures

struct  HueContext

Defines

#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_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_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_SCENE, VAR_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 start_frame (AVFilterLink *inlink, AVFilterBufferRef *inpic)
static int draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
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 []
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.


Define Documentation

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 86 of file vf_hue.c.

#define HUE_DEFAULT_VAL   0

Definition at line 39 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 OFFSET (  )     offsetof(HueContext, x)

Definition at line 85 of file vf_hue.c.

#define SAT_DEFAULT_VAL   1

Definition at line 40 of file vf_hue.c.

Referenced by init().

#define SAT_DEFAULT_VAL_STRING   AV_STRINGIFY(SAT_DEFAULT_VAL)

Definition at line 43 of file vf_hue.c.

#define SAT_MAX_VAL   10

Definition at line 46 of file vf_hue.c.

Referenced by set_options(), and start_frame().

#define SAT_MIN_VAL   -10

Definition at line 45 of file vf_hue.c.

Referenced by set_options(), and start_frame().

#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.

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

Definition at line 308 of file vf_hue.c.


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_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_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_SCENE 
VAR_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  )  [inline, static]

Definition at line 99 of file vf_hue.c.

Referenced by set_options(), and start_frame().

static int config_props ( AVFilterLink inlink  )  [static]

Definition at line 252 of file vf_hue.c.

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

Definition at line 362 of file vf_hue.c.

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

Definition at line 207 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 draw_slice().

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

Definition at line 390 of file vf_hue.c.

static int query_formats ( AVFilterContext ctx  )  [static]

Definition at line 237 of file vf_hue.c.

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

Definition at line 130 of file vf_hue.c.

Referenced by init(), process_command(), and tls_open().

static int start_frame ( AVFilterLink inlink,
AVFilterBufferRef inpic 
) [static]

Definition at line 310 of file vf_hue.c.

static av_cold void uninit ( AVFilterContext ctx  )  [static]

Definition at line 223 of file vf_hue.c.


Variable Documentation

Definition at line 399 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 char* const var_names[] [static]

Initial value:

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

Definition at line 48 of file vf_hue.c.


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