vf_geq.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	GEQContext
struct	ThreadData
	Used for passing data between threads. More...

Macros
#define	MAX_NB_THREADS   32
#define	NB_PLANES   4
#define	OFFSET(x)   offsetof(GEQContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Enumerations
enum	InterpolationMethods { INTERP_NEAREST, INTERP_BILINEAR, NB_INTERP }
enum	{   VAR_X, VAR_Y, VAR_W, VAR_H,   VAR_N, VAR_SW, VAR_SH, VAR_T,   VAR_VARS_NB }
enum	{   Y = 0, U, V, A,   G, B, R }

Functions
	AVFILTER_DEFINE_CLASS (geq)
static double	getpix (void *priv, double x, double y, int plane)
static int	calculate_sums (GEQContext *geq, int plane, int w, int h)
static double	getpix_integrate_internal (GEQContext *geq, int x, int y, int plane, int w, int h)
static double	getpix_integrate (void *priv, double x, double y, int plane)
static double	lum (void *priv, double x, double y)
static double	cb (void *priv, double x, double y)
static double	cr (void *priv, double x, double y)
static double	alpha (void *priv, double x, double y)
static double	lumsum (void *priv, double x, double y)
static double	cbsum (void *priv, double x, double y)
static double	crsub (void *priv, double x, double y)
static double	alphasum (void *priv, double x, double y)
static av_cold int	geq_init (AVFilterContext *ctx)
static int	geq_query_formats (AVFilterContext *ctx)
static int	geq_config_props (AVFilterLink *inlink)
static int	slice_geq_filter (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	geq_filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	geq_uninit (AVFilterContext *ctx)

Variables
static const char *const	var_names [] = { "X", "Y", "W", "H", "N", "SW", "SH", "T", NULL }
static const AVOption	geq_options []
static const AVFilterPad	geq_inputs []
static const AVFilterPad	geq_outputs []
AVFilter	ff_vf_geq

Detailed Description

Generic equation change filter Originally written by Michael Niedermayer for the MPlayer project, and ported by Clément Bœsch for FFmpeg.

Definition in file vf_geq.c.

Macro Definition Documentation

MAX_NB_THREADS

#define MAX_NB_THREADS   32

Definition at line 36 of file vf_geq.c.

NB_PLANES

#define NB_PLANES   4

Definition at line 37 of file vf_geq.c.

OFFSET

#define OFFSET

(

x

)

offsetof(GEQContext, x)

Definition at line 68 of file vf_geq.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 69 of file vf_geq.c.

Enumeration Type Documentation

InterpolationMethods

enum InterpolationMethods

Enumerator
INTERP_NEAREST
INTERP_BILINEAR
NB_INTERP

Definition at line 39 of file vf_geq.c.

anonymous enum

anonymous enum

Enumerator
VAR_X
VAR_Y
VAR_W
VAR_H
VAR_N
VAR_SW
VAR_SH
VAR_T
VAR_VARS_NB

Definition at line 46 of file vf_geq.c.

anonymous enum

anonymous enum

Enumerator
Y
U
V
A
G
B
R

Definition at line 66 of file vf_geq.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

geq

)

getpix()

static double getpix ( void *  priv, double  x, double  y, int  plane  )

inlinestatic

Definition at line 97 of file vf_geq.c.

Referenced by alpha(), cb(), cr(), and lum().

calculate_sums()

static int calculate_sums ( GEQContext *  geq, int  plane, int  w, int  h  )

static

Definition at line 142 of file vf_geq.c.

Referenced by geq_filter_frame().

getpix_integrate_internal()

static double getpix_integrate_internal ( GEQContext *  geq, int  x, int  y, int  plane, int  w, int  h  )

inlinestatic

Definition at line 180 of file vf_geq.c.

Referenced by getpix_integrate().

getpix_integrate()

static double getpix_integrate ( void *  priv, double  x, double  y, int  plane  )

inlinestatic

Definition at line 199 of file vf_geq.c.

Referenced by alphasum(), cbsum(), crsub(), and lumsum().

lum()

static double lum ( void *  priv, double  x, double  y  )

static

Definition at line 214 of file vf_geq.c.

Referenced by geq_init().

cb()

static double cb ( void *  priv, double  x, double  y  )

static

Definition at line 215 of file vf_geq.c.

Referenced by build_canonical_huff(), calc_power(), codebook_trellis_rate(), create_adapt_vect(), create_vorbis_context(), decode_frame(), decode_huffman2(), decode_lsp(), decode_q_branch(), draw_cursor(), draw_spatial(), dvbsub_parse_clut_segment(), encode_frame(), encode_q_branch(), encode_window_bands_info(), escape130_decode_frame(), ff_atrac3p_init_vlcs(), ff_check_interrupt(), ff_poll_interrupt(), fill_gv_table(), fill_table(), filter_frame(), find_best_vect(), find_min_book(), geq_init(), idct_put(), index_mb(), init_dimensions(), ivi_create_huff_from_desc(), m101_decode_frame(), opus_rc_enc_carryout(), paf_audio_decode(), parse_ifo_palette(), parse_palette_segment(), pgmyuv_save(), ps_tableinit(), put_codebook_header(), put_codeword(), quantize_and_encode_band(), quantize_and_encode_band_cost_template(), quantize_band_cost(), quantize_band_cost_bits(), quantize_band_cost_cached(), read_coeffs_coarse(), ready_codebook(), ready_residue(), register_exit(), rgb24_to_yuv420p(), rgb_to_yuv(), search_for_quantizers_anmr(), search_for_quantizers_fast(), search_for_quantizers_twoloop(), set_blocks(), unpack_codebook(), update_volume(), vcr1_decode_frame(), vibrance_slice16(), vibrance_slice8(), vorbis_parse_setup_hdr_codebooks(), yuv_a_to_rgba(), and yuv_to_rgba().

cr()

static double cr ( void *  priv, double  x, double  y  )

static

Definition at line 216 of file vf_geq.c.

Referenced by decode_frame(), decode_q_branch(), draw_cursor(), draw_mandelbrot(), draw_spatial(), dvbsub_parse_clut_segment(), encode_frame(), encode_q_branch(), escape130_decode_frame(), geq_init(), idct_put(), init_dimensions(), m101_decode_frame(), parse_ifo_palette(), parse_palette_segment(), pgmyuv_save(), rgb24_to_yuv420p(), rgb_to_yuv(), set_blocks(), vcr1_decode_frame(), vibrance_slice16(), vibrance_slice8(), yuv_a_to_rgba(), and yuv_to_rgba().

alpha()

static double alpha ( void *  priv, double  x, double  y  )

static

Definition at line 217 of file vf_geq.c.

Referenced by geq_init().

lumsum()

static double lumsum ( void *  priv, double  x, double  y  )

static

Definition at line 219 of file vf_geq.c.

Referenced by geq_init().

cbsum()

static double cbsum ( void *  priv, double  x, double  y  )

static

Definition at line 220 of file vf_geq.c.

Referenced by geq_init().

crsub()

static double crsub ( void *  priv, double  x, double  y  )

static

Definition at line 221 of file vf_geq.c.

Referenced by geq_init().

alphasum()

static double alphasum ( void *  priv, double  x, double  y  )

static

Definition at line 222 of file vf_geq.c.

Referenced by geq_init().

geq_init()

static av_cold int geq_init ( AVFilterContext *  ctx )

static

Definition at line 224 of file vf_geq.c.

geq_query_formats()

static int geq_query_formats ( AVFilterContext *  ctx )

static

Definition at line 307 of file vf_geq.c.

geq_config_props()

static int geq_config_props ( AVFilterLink *  inlink )

static

Definition at line 349 of file vf_geq.c.

slice_geq_filter()

static int slice_geq_filter ( AVFilterContext *  ctx, void *  arg, int  jobnr, int  nb_jobs  )

static

Definition at line 370 of file vf_geq.c.

Referenced by geq_filter_frame().

geq_filter_frame()

static int geq_filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 416 of file vf_geq.c.

geq_uninit()

static av_cold void geq_uninit ( AVFilterContext *  ctx )

static

Definition at line 465 of file vf_geq.c.

Variable Documentation

var_names

const char* const var_names[] = { "X", "Y", "W", "H", "N", "SW", "SH", "T", NULL }

static

Definition at line 45 of file vf_geq.c.

Referenced by geq_init().

geq_options

const AVOption geq_options[]

static

Initial value:

= {
    { "lum_expr",   "set luminance expression",   OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "lum",        "set luminance expression",   OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "cb_expr",    "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "cb",         "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "cr_expr",    "set chroma red expression",  OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "cr",         "set chroma red expression",  OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "alpha_expr", "set alpha expression",       OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "a",          "set alpha expression",       OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "red_expr",   "set red expression",         OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "r",          "set red expression",         OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "green_expr", "set green expression",       OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "g",          "set green expression",       OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "blue_expr",  "set blue expression",        OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "b",          "set blue expression",        OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
    { "interpolation","set interpolation method", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERP_BILINEAR}, 0, NB_INTERP-1, FLAGS, "interp" },
    { "i",          "set interpolation method",   OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERP_BILINEAR}, 0, NB_INTERP-1, FLAGS, "interp" },
    { "nearest",    "nearest interpolation",      0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST},  0, 0, FLAGS, "interp" },
    { "n",          "nearest interpolation",      0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST},  0, 0, FLAGS, "interp" },
    { "bilinear",   "bilinear interpolation",     0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, "interp" },
    { "b",          "bilinear interpolation",     0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, "interp" },
    {NULL},
}

Definition at line 71 of file vf_geq.c.

geq_inputs

const AVFilterPad geq_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = geq_config_props,
        .filter_frame = geq_filter_frame,
    },
    { NULL }
}

Definition at line 477 of file vf_geq.c.

geq_outputs

const AVFilterPad geq_outputs[]

static

Initial value:

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

Definition at line 487 of file vf_geq.c.

ff_vf_geq

AVFilter ff_vf_geq

Initial value:

= {
    .name          = "geq",
    .description   = NULL_IF_CONFIG_SMALL("Apply generic equation to each pixel."),
    .priv_size     = sizeof(GEQContext),
    .init          = geq_init,
    .uninit        = geq_uninit,
    .query_formats = geq_query_formats,
    .inputs        = geq_inputs,
    .outputs       = geq_outputs,
    .priv_class    = &geq_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 495 of file vf_geq.c.