vf_histogram.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	HistogramContext

Macros
#define	OFFSET(x)   offsetof(HistogramContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Functions
	AVFILTER_DEFINE_CLASS (histogram)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)

Variables
static const AVOption	histogram_options []
static enum AVPixelFormat	levels_in_pix_fmts []
static enum AVPixelFormat	levels_out_yuv8_pix_fmts []
static enum AVPixelFormat	levels_out_yuv9_pix_fmts []
static enum AVPixelFormat	levels_out_yuv10_pix_fmts []
static enum AVPixelFormat	levels_out_yuv12_pix_fmts []
static enum AVPixelFormat	levels_out_rgb8_pix_fmts []
static enum AVPixelFormat	levels_out_rgb9_pix_fmts []
static enum AVPixelFormat	levels_out_rgb10_pix_fmts []
static enum AVPixelFormat	levels_out_rgb12_pix_fmts []
static const uint8_t	black_yuva_color [4] = { 0, 127, 127, 255 }
static const uint8_t	black_gbrp_color [4] = { 0, 0, 0, 255 }
static const uint8_t	white_yuva_color [4] = { 255, 127, 127, 255 }
static const uint8_t	white_gbrp_color [4] = { 255, 255, 255, 255 }
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
AVFilter	ff_vf_histogram

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(HistogramContext, x)

Definition at line 53 of file vf_histogram.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 54 of file vf_histogram.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

histogram

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 137 of file vf_histogram.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 193 of file vf_histogram.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 229 of file vf_histogram.c.

filter_frame()

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

static

Definition at line 249 of file vf_histogram.c.

Variable Documentation

histogram_options

const AVOption histogram_options[]

static

Initial value:

= {
    { "level_height", "set level height", OFFSET(level_height), AV_OPT_TYPE_INT, {.i64=200}, 50, 2048, FLAGS},
    { "scale_height", "set scale height", OFFSET(scale_height), AV_OPT_TYPE_INT, {.i64=12}, 0, 40, FLAGS},
    { "display_mode", "set display mode", OFFSET(display_mode), AV_OPT_TYPE_INT, {.i64=2}, 0, 2, FLAGS, "display_mode"},
    { "d",            "set display mode", OFFSET(display_mode), AV_OPT_TYPE_INT, {.i64=2}, 0, 2, FLAGS, "display_mode"},
        { "overlay", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "display_mode" },
        { "parade",  NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "display_mode" },
        { "stack",   NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "display_mode" },
    { "levels_mode", "set levels mode", OFFSET(levels_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "levels_mode"},
    { "m",           "set levels mode", OFFSET(levels_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "levels_mode"},
        { "linear",      NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "levels_mode" },
        { "logarithmic", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "levels_mode" },
    { "components", "set color components to display", OFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 1, 15, FLAGS},
    { "c",          "set color components to display", OFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 1, 15, FLAGS},
    { "fgopacity", "set foreground opacity", OFFSET(fgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.7}, 0, 1, FLAGS},
    { "f",         "set foreground opacity", OFFSET(fgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.7}, 0, 1, FLAGS},
    { "bgopacity", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS},
    { "b",         "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS},
    { NULL }
}

Definition at line 56 of file vf_histogram.c.

levels_in_pix_fmts

enum AVPixelFormat levels_in_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
    AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
    AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUVJ411P,
    AV_PIX_FMT_YUV440P,  AV_PIX_FMT_YUV410P,
    AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
    AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
    AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
    AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
    AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
    AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
    AV_PIX_FMT_GBRAP,    AV_PIX_FMT_GBRP,
    AV_PIX_FMT_GBRP9,    AV_PIX_FMT_GBRP10,  AV_PIX_FMT_GBRAP10,
    AV_PIX_FMT_GBRP12,   AV_PIX_FMT_GBRAP12,
    AV_PIX_FMT_GRAY8,
    AV_PIX_FMT_NONE
}

Definition at line 79 of file vf_histogram.c.

Referenced by query_formats().

levels_out_yuv8_pix_fmts

enum AVPixelFormat levels_out_yuv8_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_NONE
}

Definition at line 97 of file vf_histogram.c.

Referenced by query_formats().

levels_out_yuv9_pix_fmts

enum AVPixelFormat levels_out_yuv9_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUV444P9,
    AV_PIX_FMT_NONE
}

Definition at line 102 of file vf_histogram.c.

Referenced by query_formats().

levels_out_yuv10_pix_fmts

enum AVPixelFormat levels_out_yuv10_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUV444P10,
    AV_PIX_FMT_NONE
}

Definition at line 107 of file vf_histogram.c.

Referenced by query_formats().

levels_out_yuv12_pix_fmts

enum AVPixelFormat levels_out_yuv12_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV444P12,
    AV_PIX_FMT_NONE
}

Definition at line 112 of file vf_histogram.c.

Referenced by query_formats().

levels_out_rgb8_pix_fmts

enum AVPixelFormat levels_out_rgb8_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_GBRAP,    AV_PIX_FMT_GBRP,
    AV_PIX_FMT_NONE
}

Definition at line 117 of file vf_histogram.c.

Referenced by query_formats().

levels_out_rgb9_pix_fmts

enum AVPixelFormat levels_out_rgb9_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_GBRP9,
    AV_PIX_FMT_NONE
}

Definition at line 122 of file vf_histogram.c.

Referenced by query_formats().

levels_out_rgb10_pix_fmts

enum AVPixelFormat levels_out_rgb10_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
    AV_PIX_FMT_NONE
}

Definition at line 127 of file vf_histogram.c.

Referenced by query_formats().

levels_out_rgb12_pix_fmts

enum AVPixelFormat levels_out_rgb12_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
    AV_PIX_FMT_NONE
}

Definition at line 132 of file vf_histogram.c.

Referenced by query_formats().

black_yuva_color

const uint8_t black_yuva_color[4] = { 0, 127, 127, 255 }

static

Definition at line 188 of file vf_histogram.c.

Referenced by config_input().

black_gbrp_color

const uint8_t black_gbrp_color[4] = { 0, 0, 0, 255 }

static

Definition at line 189 of file vf_histogram.c.

Referenced by config_input().

white_yuva_color

const uint8_t white_yuva_color[4] = { 255, 127, 127, 255 }

static

Definition at line 190 of file vf_histogram.c.

Referenced by config_input().

white_gbrp_color

const uint8_t white_gbrp_color[4] = { 255, 255, 255, 255 }

static

Definition at line 191 of file vf_histogram.c.

Referenced by config_input().

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 359 of file vf_histogram.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 369 of file vf_histogram.c.

ff_vf_histogram

AVFilter ff_vf_histogram

Initial value:

= {
    .name          = "histogram",
    .description   = NULL_IF_CONFIG_SMALL("Compute and draw a histogram."),
    .priv_size     = sizeof(HistogramContext),
    .query_formats = query_formats,
    .inputs        = inputs,
    .outputs       = outputs,
    .priv_class    = &histogram_class,
}

Definition at line 378 of file vf_histogram.c.