vf_zscale.c File Reference

zscale video filter using z.lib library More...

#include <float.h>
#include <stdio.h>
#include <string.h>
#include <zimg.h>
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "video.h"
#include "libavutil/eval.h"
#include "libavutil/internal.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"

Go to the source code of this file.

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

Macros
#define	ZIMG_ALIGNMENT   64
#define	MIN_TILESIZE   64
#define	MAX_THREADS   64
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
#define	TFLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Enumerations
enum	var_name {   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_OHSUB , VAR_OVSUB , VARS_NB }

Functions
static av_cold int	init (AVFilterContext *ctx)
static enum AVColorRange	convert_range_from_zimg (enum zimg_pixel_range_e color_range)
static int	query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
static void	slice_params (ZScaleContext *s, int out_h, int in_h)
static int	config_props (AVFilterLink *outlink)
static int	print_zimg_error (AVFilterContext *ctx)
static int	convert_chroma_location (enum AVChromaLocation chroma_location)
static int	convert_matrix (enum AVColorSpace colorspace)
static int	convert_trc (enum AVColorTransferCharacteristic color_trc)
static int	convert_primaries (enum AVColorPrimaries color_primaries)
static int	convert_range (enum AVColorRange color_range)
static int	compare_zimg_image_formats (zimg_image_format *img_fmt0, zimg_image_format *img_fmt1)
static int	compare_zimg_graph_builder_params (zimg_graph_builder_params *parm0, zimg_graph_builder_params *parm1)
static void	format_init (zimg_image_format *format, AVFrame *frame, const AVPixFmtDescriptor *desc, int colorspace, int primaries, int transfer, int range, int location)
static int	graphs_build (AVFrame *in, AVFrame *out, const AVPixFmtDescriptor *desc, const AVPixFmtDescriptor *out_desc, AVFilterContext *ctx, int job_nr, int n_jobs)
static int	realign_frame (AVFilterLink *link, const AVPixFmtDescriptor *desc, AVFrame **frame)
static void	update_output_color_information (ZScaleContext *s, AVFrame *frame)
static int	filter_slice (AVFilterContext *ctx, void *data, int job_nr, int n_jobs)
static int	filter_frame (AVFilterLink *link, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
	AVFILTER_DEFINE_CLASS (zscale)

Variables
static const char *const	var_names []
static const AVOption	zscale_options []
static const AVFilterPad	avfilter_vf_zscale_inputs []
static const AVFilterPad	avfilter_vf_zscale_outputs []
const FFFilter	ff_vf_zscale

Detailed Description

zscale video filter using z.lib library

Definition in file vf_zscale.c.

Macro Definition Documentation

ZIMG_ALIGNMENT

#define ZIMG_ALIGNMENT   64

Definition at line 47 of file vf_zscale.c.

Referenced by filter_frame(), filter_slice(), graphs_build(), and realign_frame().

MIN_TILESIZE

#define MIN_TILESIZE   64

Definition at line 48 of file vf_zscale.c.

Referenced by filter_frame().

MAX_THREADS

#define MAX_THREADS   64

Definition at line 49 of file vf_zscale.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(ZScaleContext, x)

Definition at line 952 of file vf_zscale.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 953 of file vf_zscale.c.

TFLAGS

#define TFLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 954 of file vf_zscale.c.

Enumeration Type Documentation

var_name

enum var_name

Enumerator
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_OHSUB
VAR_OVSUB
VARS_NB

Definition at line 66 of file vf_zscale.c.

Function Documentation

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 135 of file vf_zscale.c.

convert_range_from_zimg()

static enum AVColorRange convert_range_from_zimg ( enum zimg_pixel_range_e color_range )

static

Definition at line 537 of file vf_zscale.c.

Referenced by query_formats().

query_formats()

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

static

Definition at line 178 of file vf_zscale.c.

slice_params()

static void slice_params ( ZScaleContext * s, int out_h, int in_h )

static

Definition at line 250 of file vf_zscale.c.

Referenced by filter_frame().

config_props()

static int config_props ( AVFilterLink * outlink )

static

Definition at line 265 of file vf_zscale.c.

Referenced by process_command().

print_zimg_error()

static int print_zimg_error ( AVFilterContext * ctx )

static

Definition at line 394 of file vf_zscale.c.

Referenced by filter_slice(), and graphs_build().

convert_chroma_location()

static int convert_chroma_location ( enum AVChromaLocation chroma_location )

static

Definition at line 404 of file vf_zscale.c.

Referenced by format_init().

convert_matrix()

static int convert_matrix ( enum AVColorSpace colorspace )

static

Definition at line 424 of file vf_zscale.c.

Referenced by format_init().

convert_trc()

static int convert_trc ( enum AVColorTransferCharacteristic color_trc )

static

Definition at line 457 of file vf_zscale.c.

Referenced by format_init().

convert_primaries()

static int convert_primaries ( enum AVColorPrimaries color_primaries )

static

Definition at line 494 of file vf_zscale.c.

Referenced by format_init().

convert_range()

static int convert_range ( enum AVColorRange color_range )

static

Definition at line 525 of file vf_zscale.c.

Referenced by format_init().

compare_zimg_image_formats()

static int compare_zimg_image_formats ( zimg_image_format * img_fmt0, zimg_image_format * img_fmt1 )

static

Definition at line 549 of file vf_zscale.c.

Referenced by filter_slice().

compare_zimg_graph_builder_params()

static int compare_zimg_graph_builder_params ( zimg_graph_builder_params * parm0, zimg_graph_builder_params * parm1 )

static

Definition at line 570 of file vf_zscale.c.

Referenced by filter_slice().

format_init()

static void format_init ( zimg_image_format * format, AVFrame * frame, const AVPixFmtDescriptor * desc, int colorspace, int primaries, int transfer, int range, int location )

static

Definition at line 593 of file vf_zscale.c.

Referenced by filter_frame().

graphs_build()

static int graphs_build ( AVFrame * in, AVFrame * out, const AVPixFmtDescriptor * desc, const AVPixFmtDescriptor * out_desc, AVFilterContext * ctx, int job_nr, int n_jobs )

static

Definition at line 614 of file vf_zscale.c.

Referenced by filter_slice().

realign_frame()

static int realign_frame ( AVFilterLink * link, const AVPixFmtDescriptor * desc, AVFrame ** frame )

static

Definition at line 663 of file vf_zscale.c.

Referenced by filter_frame().

update_output_color_information()

static void update_output_color_information ( ZScaleContext * s, AVFrame * frame )

static

Definition at line 694 of file vf_zscale.c.

Referenced by filter_frame().

filter_slice()

static int filter_slice ( AVFilterContext * ctx, void * data, int job_nr, int n_jobs )

static

Definition at line 706 of file vf_zscale.c.

filter_frame()

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

static

Definition at line 757 of file vf_zscale.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 915 of file vf_zscale.c.

process_command()

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

static

Definition at line 928 of file vf_zscale.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

zscale

)

Variable Documentation

var_names

const char* const var_names[]

static

Initial value:

= {
    "in_w",   "iw",
    "in_h",   "ih",
    "out_w",  "ow",
    "out_h",  "oh",
    "a",
    "sar",
    "dar",
    "hsub",
    "vsub",
    "ohsub",
    "ovsub",
    NULL
}

Definition at line 51 of file vf_zscale.c.

zscale_options

const AVOption zscale_options[]

static

Definition at line 956 of file vf_zscale.c.

avfilter_vf_zscale_inputs

const AVFilterPad avfilter_vf_zscale_inputs[]

static

Initial value:

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

Definition at line 1084 of file vf_zscale.c.

avfilter_vf_zscale_outputs

const AVFilterPad avfilter_vf_zscale_outputs[]

static

Initial value:

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

Definition at line 1092 of file vf_zscale.c.

ff_vf_zscale

const FFFilter ff_vf_zscale

Initial value:

= {
    .p.name          = "zscale",
    .p.description   = NULL_IF_CONFIG_SMALL("Apply resizing, colorspace and bit depth conversion."),
    .p.priv_class    = &zscale_class,
    .p.flags         = AVFILTER_FLAG_SLICE_THREADS,
    .init            = init,
    .priv_size       = sizeof(ZScaleContext),
    .uninit          = uninit,
    FILTER_INPUTS(avfilter_vf_zscale_inputs),
    FILTER_OUTPUTS(avfilter_vf_zscale_outputs),
    FILTER_QUERY_FUNC2(query_formats),
    .process_command = process_command,
}

Definition at line 1100 of file vf_zscale.c.