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vf_colormatrix.c File Reference

ColorMatrix 2.0 is based on the original ColorMatrix filter by Wilbert Dijkhof. More...

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

Go to the source code of this file.

Data Structures

struct  ColorMatrixContext
 

Macros

#define NS(n)   n < 0 ? (int)(n*65536.0-0.5+DBL_EPSILON) : (int)(n*65536.0+0.5)
 
#define CB(n)   av_clip_uint8(n)
 
#define OFFSET(x)   offsetof(ColorMatrixContext, x)
 
#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
#define ma   m[0][0]
 
#define mb   m[0][1]
 
#define mc   m[0][2]
 
#define md   m[1][0]
 
#define me   m[1][1]
 
#define mf   m[1][2]
 
#define mg   m[2][0]
 
#define mh   m[2][1]
 
#define mi   m[2][2]
 
#define ima   im[0][0]
 
#define imb   im[0][1]
 
#define imc   im[0][2]
 
#define imd   im[1][0]
 
#define ime   im[1][1]
 
#define imf   im[1][2]
 
#define img   im[2][0]
 
#define imh   im[2][1]
 
#define imi   im[2][2]
 

Enumerations

enum  ColorMode {
  CHANNEL, INTENSITY, NB_CLMODES, COLOR_MODE_NONE = -1,
  COLOR_MODE_BT709, COLOR_MODE_FCC, COLOR_MODE_BT601, COLOR_MODE_SMPTE240M,
  COLOR_MODE_COUNT
}
 

Functions

 AVFILTER_DEFINE_CLASS (colormatrix)
 
static void inverse3x3 (double im[3][3], const double m[3][3])
 
static void solve_coefficients (double cm[3][3], double rgb[3][3], const double yuv[3][3])
 
static void calc_coefficients (AVFilterContext *ctx)
 
static av_cold int init (AVFilterContext *ctx)
 
static void process_frame_uyvy422 (ColorMatrixContext *color, AVFrame *dst, AVFrame *src)
 
static void process_frame_yuv422p (ColorMatrixContext *color, AVFrame *dst, AVFrame *src)
 
static void process_frame_yuv420p (ColorMatrixContext *color, AVFrame *dst, AVFrame *src)
 
static int config_input (AVFilterLink *inlink)
 
static int query_formats (AVFilterContext *ctx)
 
static int filter_frame (AVFilterLink *link, AVFrame *in)
 

Variables

static const double yuv_coeff [4][3][3]
 
static const AVOption colormatrix_options []
 
static const char * color_modes [] = {"bt709", "fcc", "bt601", "smpte240m"}
 
static const AVFilterPad colormatrix_inputs []
 
static const AVFilterPad colormatrix_outputs []
 
AVFilter ff_vf_colormatrix
 

Detailed Description

ColorMatrix 2.0 is based on the original ColorMatrix filter by Wilbert Dijkhof.

It adds the ability to convert between any of: Rec.709, FCC, Rec.601, and SMPTE 240M. It also makes pre and post clipping optional, adds an option to use scaled or non-scaled coefficients, and more...

Definition in file vf_colormatrix.c.

Macro Definition Documentation

#define NS (   n)    n < 0 ? (int)(n*65536.0-0.5+DBL_EPSILON) : (int)(n*65536.0+0.5)

Definition at line 40 of file vf_colormatrix.c.

Referenced by calc_coefficients().

#define CB (   n)    av_clip_uint8(n)
#define OFFSET (   x)    offsetof(ColorMatrixContext, x)

Definition at line 76 of file vf_colormatrix.c.

Definition at line 77 of file vf_colormatrix.c.

#define ma   m[0][0]

Definition at line 91 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define mb   m[0][1]
#define mc   m[0][2]
#define md   m[1][0]
#define me   m[1][1]
#define mf   m[1][2]

Definition at line 96 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define mg   m[2][0]

Definition at line 97 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define mh   m[2][1]
#define mi   m[2][2]

Definition at line 99 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define ima   im[0][0]

Definition at line 101 of file vf_colormatrix.c.

Referenced by adpcm_compress_trellis(), and inverse3x3().

#define imb   im[0][1]

Definition at line 102 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define imc   im[0][2]

Definition at line 103 of file vf_colormatrix.c.

Referenced by avcodec_register_all(), and inverse3x3().

#define imd   im[1][0]

Definition at line 104 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define ime   im[1][1]

Definition at line 105 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define imf   im[1][2]

Definition at line 106 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define img   im[2][0]
#define imh   im[2][1]

Definition at line 108 of file vf_colormatrix.c.

Referenced by inverse3x3().

#define imi   im[2][2]

Definition at line 109 of file vf_colormatrix.c.

Referenced by inverse3x3().

Enumeration Type Documentation

enum ColorMode
Enumerator:
CHANNEL 
INTENSITY 
NB_CLMODES 
COLOR_MODE_NONE 
COLOR_MODE_BT709 
COLOR_MODE_FCC 
COLOR_MODE_BT601 
COLOR_MODE_SMPTE240M 
COLOR_MODE_COUNT 

Definition at line 58 of file vf_colormatrix.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( colormatrix  )
static void inverse3x3 ( double  im[3][3],
const double  m[3][3] 
)
static

Definition at line 111 of file vf_colormatrix.c.

Referenced by calc_coefficients().

static void solve_coefficients ( double  cm[3][3],
double  rgb[3][3],
const double  yuv[3][3] 
)
static

Definition at line 126 of file vf_colormatrix.c.

Referenced by calc_coefficients().

static void calc_coefficients ( AVFilterContext ctx)
static

Definition at line 134 of file vf_colormatrix.c.

Referenced by filter_frame().

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 163 of file vf_colormatrix.c.

static void process_frame_uyvy422 ( ColorMatrixContext color,
AVFrame dst,
AVFrame src 
)
static

Definition at line 180 of file vf_colormatrix.c.

Referenced by filter_frame().

static void process_frame_yuv422p ( ColorMatrixContext color,
AVFrame dst,
AVFrame src 
)
static

Definition at line 212 of file vf_colormatrix.c.

Referenced by filter_frame().

static void process_frame_yuv420p ( ColorMatrixContext color,
AVFrame dst,
AVFrame src 
)
static

Definition at line 254 of file vf_colormatrix.c.

Referenced by filter_frame().

static int config_input ( AVFilterLink inlink)
static

Definition at line 302 of file vf_colormatrix.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 317 of file vf_colormatrix.c.

static int filter_frame ( AVFilterLink link,
AVFrame in 
)
static

Definition at line 331 of file vf_colormatrix.c.

Variable Documentation

const double yuv_coeff[4][3][3]
static
Initial value:
= {
{ { +0.7152, +0.0722, +0.2126 },
{ -0.3850, +0.5000, -0.1150 },
{ -0.4540, -0.0460, +0.5000 } },
{ { +0.5900, +0.1100, +0.3000 },
{ -0.3310, +0.5000, -0.1690 },
{ -0.4210, -0.0790, +0.5000 } },
{ { +0.5870, +0.1140, +0.2990 },
{ -0.3313, +0.5000, -0.1687 },
{ -0.4187, -0.0813, +0.5000 } },
{ { +0.7010, +0.0870, +0.2120 },
{ -0.3840, +0.5000, -0.1160 },
{ -0.4450, -0.0550, +0.5000 } },
}

Definition at line 43 of file vf_colormatrix.c.

Referenced by calc_coefficients().

const AVOption colormatrix_options[]
static
Initial value:
= {
{ "src", "set source color matrix", OFFSET(source), AV_OPT_TYPE_INT, {.i64=COLOR_MODE_NONE}, COLOR_MODE_NONE, COLOR_MODE_COUNT-1, .flags=FLAGS, .unit="color_mode" },
{ "dst", "set destination color matrix", OFFSET(dest), AV_OPT_TYPE_INT, {.i64=COLOR_MODE_NONE}, COLOR_MODE_NONE, COLOR_MODE_COUNT-1, .flags=FLAGS, .unit="color_mode" },
{ "bt709", "set BT.709 colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_BT709}, .flags=FLAGS, .unit="color_mode" },
{ "fcc", "set FCC colorspace ", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_FCC}, .flags=FLAGS, .unit="color_mode" },
{ "bt601", "set BT.601 colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_BT601}, .flags=FLAGS, .unit="color_mode" },
{ "smpte240m", "set SMPTE-240M colorspace", 0, AV_OPT_TYPE_CONST, {.i64=COLOR_MODE_SMPTE240M}, .flags=FLAGS, .unit="color_mode" },
{ NULL }
}

Definition at line 79 of file vf_colormatrix.c.

const char* color_modes[] = {"bt709", "fcc", "bt601", "smpte240m"}
static

Definition at line 161 of file vf_colormatrix.c.

Referenced by config_input().

const AVFilterPad colormatrix_inputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_input,
.filter_frame = filter_frame,
},
{ NULL }
}

Definition at line 383 of file vf_colormatrix.c.

const AVFilterPad colormatrix_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}

Definition at line 393 of file vf_colormatrix.c.

AVFilter ff_vf_colormatrix
Initial value:
= {
.name = "colormatrix",
.description = NULL_IF_CONFIG_SMALL("Convert color matrix."),
.priv_size = sizeof(ColorMatrixContext),
.init = init,
.priv_class = &colormatrix_class,
}

Definition at line 401 of file vf_colormatrix.c.