vf_uspp.c File Reference

Ultra Slow/Simple Post-processing filter. More...

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/video_enc_params.h"
#include "libavcodec/avcodec.h"
#include "filters.h"
#include "qp_table.h"
#include "avfilter.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	USPPContext

Macros
#define	MAX_LEVEL   8 /* quality levels */
#define	BLOCK   16
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	STORE(pos)

Functions
	AVFILTER_DEFINE_CLASS (uspp)
static void	store_slice_c (uint8_t *dst, const uint16_t *src, int dst_stride, int src_stride, int width, int height, int log2_scale)
static int	filter_1phase (AVFilterContext *ctx, void *arg, int i, int nb_jobs)
static void	filter (AVFilterContext *ctx, uint8_t *dst[3], uint8_t *src[3], int dst_stride[3], int src_stride[3], int width, int height, uint8_t *qp_store, int qp_stride)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	uspp_options []
static const uint8_t	dither [8][8]
static const uint8_t	offset [511][2]
static enum AVPixelFormat	pix_fmts []
static const AVFilterPad	uspp_inputs []
const FFFilter	ff_vf_uspp

Detailed Description

Ultra Slow/Simple Post-processing filter.

Originally written by Michael Niedermayer for the MPlayer project, and ported by Arwa Arif for FFmpeg.

Definition in file vf_uspp.c.

Macro Definition Documentation

MAX_LEVEL

#define MAX_LEVEL   8 /* quality levels */

Definition at line 44 of file vf_uspp.c.

BLOCK

#define BLOCK   16

Definition at line 45 of file vf_uspp.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(USPPContext, x)

Definition at line 71 of file vf_uspp.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 72 of file vf_uspp.c.

STORE

#define STORE

(

pos

)

Value:

    do {                                                     \
    temp = ((src[x + y * src_stride + pos] << log2_scale) + d[pos]) >> 8;   \
    if (temp & 0x100) temp = ~(temp >> 31);                                 \
    dst[x + y * dst_stride + pos] = temp;                                   \
} while (0)

Referenced by store_slice_c().

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

uspp

)

store_slice_c()

static void store_slice_c ( uint8_t * dst, const uint16_t * src, int dst_stride, int src_stride, int width, int height, int log2_scale )

static

Definition at line 168 of file vf_uspp.c.

Referenced by filter().

filter_1phase()

static int filter_1phase ( AVFilterContext * ctx, void * arg, int i, int nb_jobs )

static

Definition at line 196 of file vf_uspp.c.

Referenced by filter().

filter()

static void filter ( AVFilterContext * ctx, uint8_t * dst[3], uint8_t * src[3], int dst_stride[3], int src_stride[3], int width, int height, uint8_t * qp_store, int qp_stride )

static

Definition at line 280 of file vf_uspp.c.

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 350 of file vf_uspp.c.

filter_frame()

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

static

Definition at line 448 of file vf_uspp.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 521 of file vf_uspp.c.

Variable Documentation

uspp_options

const AVOption uspp_options[]

static

Initial value:

= {
    { "quality",       "set quality",                          OFFSET(log2_count),    AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS },
    { "qp",            "force a constant quantizer parameter", OFFSET(qp),            AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63,        FLAGS },
    { "use_bframe_qp", "use B-frames' QP",                     OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL,{.i64 = 0}, 0, 1,         FLAGS },
    { "codec",         "Codec name",                           OFFSET(codec_name),    AV_OPT_TYPE_STRING, {.str = "snow"}, 0, 0, FLAGS },
    { NULL }
}

Definition at line 73 of file vf_uspp.c.

dither

const uint8_t dither[8][8]

static

Initial value:

= {
    {  0*4,  48*4,  12*4,  60*4,   3*4,  51*4,  15*4,  63*4, },
    { 32*4,  16*4,  44*4,  28*4,  35*4,  19*4,  47*4,  31*4, },
    {  8*4,  56*4,   4*4,  52*4,  11*4,  59*4,   7*4,  55*4, },
    { 40*4,  24*4,  36*4,  20*4,  43*4,  27*4,  39*4,  23*4, },
    {  2*4,  50*4,  14*4,  62*4,   1*4,  49*4,  13*4,  61*4, },
    { 34*4,  18*4,  46*4,  30*4,  33*4,  17*4,  45*4,  29*4, },
    { 10*4,  58*4,   6*4,  54*4,   9*4,  57*4,   5*4,  53*4, },
    { 42*4,  26*4,  38*4,  22*4,  41*4,  25*4,  37*4,  21*4, },
}

Definition at line 83 of file vf_uspp.c.

offset

const uint8_t offset[511][2]

static

Definition at line 94 of file vf_uspp.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_YUV410P,
    AV_PIX_FMT_YUVJ444P,
    AV_PIX_FMT_YUVJ420P,
    AV_PIX_FMT_GRAY8,
    AV_PIX_FMT_NONE
}

Definition at line 340 of file vf_uspp.c.

uspp_inputs

const AVFilterPad uspp_inputs[]

static

Initial value:

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

Definition at line 543 of file vf_uspp.c.

ff_vf_uspp

const FFFilter ff_vf_uspp

Initial value:

= {
    .p.name          = "uspp",
    .p.description   = NULL_IF_CONFIG_SMALL("Apply Ultra Simple / Slow Post-processing filter."),
    .p.priv_class    = &uspp_class,
    .p.flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
    .priv_size       = sizeof(USPPContext),
    .uninit          = uninit,
    FILTER_INPUTS(uspp_inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
}

Definition at line 552 of file vf_uspp.c.