vf_geq.c File Reference

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

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "filters.h"
#include "formats.h"
#include "video.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)
#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 (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
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 []
const FFFilter	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 40 of file vf_geq.c.

NB_PLANES

#define NB_PLANES   4

Definition at line 41 of file vf_geq.c.

Referenced by blur(), check_compiled(), check_range(), check_uop(), geq_init(), and geq_uninit().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(GEQContext, x)

Definition at line 73 of file vf_geq.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 74 of file vf_geq.c.

Enumeration Type Documentation

InterpolationMethods

enum InterpolationMethods

Enumerator
INTERP_NEAREST
INTERP_BILINEAR
NB_INTERP

Definition at line 43 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 50 of file vf_geq.c.

anonymous enum

anonymous enum

Enumerator
Y
U
V
A
G
B
R

Definition at line 71 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 102 of file vf_geq.c.

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

calculate_sums()

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

static

Definition at line 164 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 212 of file vf_geq.c.

Referenced by getpix_integrate(), and getpix_integrate_internal().

getpix_integrate()

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

inlinestatic

Definition at line 231 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 246 of file vf_geq.c.

cb()

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

static

Definition at line 247 of file vf_geq.c.

Referenced by apply_noise_fill(), av_executor_alloc(), av_executor_execute(), build_canonical_huff(), calc_power(), cfhd_encode_frame(), codebook_trellis_rate(), colormap_slice(), create_adapt_vect(), create_vorbis_context(), decode_frame(), decode_frame(), decode_huffman2(), decode_lsp(), decode_q_branch(), do_decode(), draw_cursor(), draw_spatial(), dvbsub_parse_clut_segment(), encode_frame(), encode_frame(), encode_q_branch(), escape130_decode_frame(), ff_check_interrupt(), ff_dvdclut_yuv_to_rgb(), ff_executor_alloc(), ff_fill_rgb2yuv_table(), ff_poll_interrupt(), ff_quantize_and_encode_band_cost(), ff_sws_enum_op_lists(), ff_vvc_inv_dct2_64(), filter_frame(), find_best_vect(), find_capture_source(), find_min_book(), frame_checksum_compare(), geq_init(), idct_put(), if(), index_mb(), init_dimensions(), ivi_create_huff_from_desc(), m101_decode_frame(), mediacodec_init(), mediacodec_ndk_setAsyncNotifyCallback(), nmr_band_curve(), oh_decode_start(), oh_encode_start(), opencl_error_callback(), opus_rc_enc_carryout(), osq_channel_parameters(), paf_audio_decode(), parse_ifo_palette(), parse_palette_segment(), pgmyuv_save(), pps_scc_extension(), ps_tableinit(), put_codebook_header(), put_codeword(), quantize_and_encode_band(), quantize_and_encode_band_cost_NONE(), quantize_and_encode_band_cost_template(), quantize_band_cost(), quantize_band_cost_bits(), quantize_band_cost_cached(), read_coeffs_coarse(), ready_codebook(), ready_residue(), reset_stats(), rgb24_to_yuv420p(), rgb_to_yuv(), run_on_wgc_thread(), run_one_task(), run_one_task(), search_for_quantizers_fast(), search_for_quantizers_twoloop(), set_blocks(), spectrum_scale(), unpack_codebook(), update_residue_parameter(), update_stats(), update_volume(), vcr1_decode_frame(), vibrance_slice16(), vibrance_slice16p(), vibrance_slice8(), vibrance_slice8p(), vorbis_parse_setup_hdr_codebooks(), vvc_deblock_bs_luma(), vvc_deblock_subblock_bs(), and yuv_a_to_rgba().

cr()

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

static

Definition at line 248 of file vf_geq.c.

Referenced by cairo_get_current_point(), cairo_get_dash(), cairo_get_dash_count(), cairo_has_current_point(), cairo_set_dash(), cairo_set_source(), cairo_status(), colormap_slice(), decode_frame(), decode_frame(), decode_q_branch(), draw_cursor(), draw_mandelbrot(), draw_spatial(), dvbsub_parse_clut_segment(), encode_frame(), encode_q_branch(), escape130_decode_frame(), ff_dvdclut_yuv_to_rgb(), ff_fill_rgb2yuv_table(), geq_init(), idct_put(), init_dimensions(), m101_decode_frame(), parse_ifo_palette(), parse_palette_segment(), pgmyuv_save(), pps_scc_extension(), rgb24_to_yuv420p(), rgb_to_yuv(), set_blocks(), update_current_point(), vcr1_decode_frame(), vibrance_slice16(), vibrance_slice16p(), vibrance_slice8(), vibrance_slice8p(), view_matrix(), and yuv_a_to_rgba().

alpha()

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

static

Definition at line 249 of file vf_geq.c.

lumsum()

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

static

Definition at line 251 of file vf_geq.c.

Referenced by geq_init().

cbsum()

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

static

Definition at line 252 of file vf_geq.c.

Referenced by geq_init().

crsub()

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

static

Definition at line 253 of file vf_geq.c.

Referenced by geq_init().

alphasum()

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

static

Definition at line 254 of file vf_geq.c.

Referenced by geq_init().

geq_init()

static av_cold int geq_init ( AVFilterContext * ctx )

static

Definition at line 256 of file vf_geq.c.

geq_query_formats()

static int geq_query_formats ( const AVFilterContext * ctx, AVFilterFormatsConfig ** cfg_in, AVFilterFormatsConfig ** cfg_out )

static

Definition at line 339 of file vf_geq.c.

geq_config_props()

static int geq_config_props ( AVFilterLink * inlink )

static

Definition at line 379 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 400 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 456 of file vf_geq.c.

geq_uninit()

static av_cold void geq_uninit ( AVFilterContext * ctx )

static

Definition at line 508 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 49 of file vf_geq.c.

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, .unit = "interp" },
    { "i",          "set interpolation method",   OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERP_BILINEAR}, 0, NB_INTERP-1, FLAGS, .unit = "interp" },
    { "nearest",    "nearest interpolation",      0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST},  0, 0, FLAGS, .unit = "interp" },
    { "n",          "nearest interpolation",      0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST},  0, 0, FLAGS, .unit = "interp" },
    { "bilinear",   "bilinear interpolation",     0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, .unit = "interp" },
    { "b",          "bilinear interpolation",     0,                   AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, .unit = "interp" },
    {NULL},
}

Definition at line 76 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,
    },
}

Definition at line 520 of file vf_geq.c.

ff_vf_geq

const FFFilter ff_vf_geq

Initial value:

= {
    .p.name        = "geq",
    .p.description = NULL_IF_CONFIG_SMALL("Apply generic equation to each pixel."),
    .p.priv_class  = &geq_class,
    .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
    .priv_size     = sizeof(GEQContext),
    .init          = geq_init,
    .uninit        = geq_uninit,
    FILTER_INPUTS(geq_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_QUERY_FUNC2(geq_query_formats),
}

Definition at line 529 of file vf_geq.c.