FFmpeg
Macros | Enumerations | Functions | Variables
vf_spp.c File Reference
#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "internal.h"
#include "vf_spp.h"

Go to the source code of this file.

Macros

#define OFFSET(x)   offsetof(SPPContext, x)
 
#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
 
#define STORE(pos)
 
#define STORE16(pos)
 

Enumerations

enum  mode {
  FF_EBUR128_MODE_M = (1 << 0), FF_EBUR128_MODE_S = (1 << 1) | FF_EBUR128_MODE_M, FF_EBUR128_MODE_I = (1 << 2) | FF_EBUR128_MODE_M, FF_EBUR128_MODE_LRA = (1 << 3) | FF_EBUR128_MODE_S,
  FF_EBUR128_MODE_SAMPLE_PEAK = (1 << 4) | FF_EBUR128_MODE_M, MODE_NONE, MODE_RO, MODE_RW,
  MODE_TOGGLE, MODE_RANDOM, NB_MODES, MODE_COVER,
  MODE_BLUR, NB_MODES, MODE_HARD, MODE_SOFT,
  MODE_MEDIUM, MODE_HARD, MODE_SOFT, NB_MODES
}
 

Functions

static const AVClass * child_class_next (const AVClass *prev)
 
static void * child_next (void *obj, void *prev)
 
static void hardthresh_c (int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
 
static void softthresh_c (int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
 
static void store_slice_c (uint8_t *dst, const int16_t *src, int dst_linesize, int src_linesize, int width, int height, int log2_scale, const uint8_t dither[8][8])
 
static void store_slice16_c (uint16_t *dst, const int16_t *src, int dst_linesize, int src_linesize, int width, int height, int log2_scale, const uint8_t dither[8][8], int depth)
 
static void add_block (uint16_t *dst, int linesize, const int16_t block[64])
 
static void filter (SPPContext *p, uint8_t *dst, uint8_t *src, int dst_linesize, int src_linesize, int width, int height, const uint8_t *qp_table, int qp_stride, int is_luma, int depth)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_input (AVFilterLink *inlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *in)
 
static int process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
 
static av_cold int init_dict (AVFilterContext *ctx, AVDictionary **opts)
 
static av_cold void uninit (AVFilterContext *ctx)
 

Variables

static const AVOption spp_options []
 
static const AVClass spp_class
 
static const uint8_t ldither [8][8]
 
static const uint8_t offset [127][2]
 
static const AVFilterPad spp_inputs []
 
static const AVFilterPad spp_outputs []
 
AVFilter ff_vf_spp
 

Detailed Description

Simple post processing filter

This implementation is based on an algorithm described in "Aria Nosratinia Embedded Post-Processing for Enhancement of Compressed Images (1999)"

Originally written by Michael Niedermayer for the MPlayer project, and ported by Clément Bœsch for FFmpeg.

Definition in file vf_spp.c.

Macro Definition Documentation

◆ OFFSET

#define OFFSET (   x)    offsetof(SPPContext, x)

Definition at line 58 of file vf_spp.c.

◆ FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 59 of file vf_spp.c.

◆ STORE

#define STORE (   pos)
Value:
do { \
temp = ((src[x + y*src_linesize + pos] << log2_scale) + d[pos]) >> 6; \
if (temp & 0x100) \
temp = ~(temp >> 31); \
dst[x + y*dst_linesize + pos] = temp; \
} while (0)

◆ STORE16

#define STORE16 (   pos)
Value:
do { \
temp = ((src[x + y*src_linesize + pos] << log2_scale) + (d[pos]>>1)) >> 5; \
if (temp & mask ) \
temp = ~(temp >> 31); \
dst[x + y*dst_linesize + pos] = temp; \
} while (0)

Enumeration Type Documentation

◆ mode

enum mode
Enumerator
FF_EBUR128_MODE_M 

can call ff_ebur128_loudness_momentary

FF_EBUR128_MODE_S 

can call ff_ebur128_loudness_shortterm

FF_EBUR128_MODE_I 

can call ff_ebur128_loudness_global_* and ff_ebur128_relative_threshold

FF_EBUR128_MODE_LRA 

can call ff_ebur128_loudness_range

FF_EBUR128_MODE_SAMPLE_PEAK 

can call ff_ebur128_sample_peak

MODE_NONE 
MODE_RO 
MODE_RW 
MODE_TOGGLE 
MODE_RANDOM 
NB_MODES 
MODE_COVER 
MODE_BLUR 
NB_MODES 
MODE_HARD 
MODE_SOFT 
MODE_MEDIUM 
MODE_HARD 
MODE_SOFT 
NB_MODES 

Definition at line 41 of file vf_spp.c.

Function Documentation

◆ child_class_next()

static const AVClass* child_class_next ( const AVClass *  prev)
static

Definition at line 47 of file vf_spp.c.

◆ child_next()

static void* child_next ( void *  obj,
void *  prev 
)
static

Definition at line 52 of file vf_spp.c.

◆ hardthresh_c()

static void hardthresh_c ( int16_t  dst[64],
const int16_t  src[64],
int  qp,
const uint8_t *  permutation 
)
static

Definition at line 116 of file vf_spp.c.

Referenced by init_dict().

◆ softthresh_c()

static void softthresh_c ( int16_t  dst[64],
const int16_t  src[64],
int  qp,
const uint8_t *  permutation 
)
static

Definition at line 137 of file vf_spp.c.

Referenced by init_dict().

◆ store_slice_c()

static void store_slice_c ( uint8_t *  dst,
const int16_t *  src,
int  dst_linesize,
int  src_linesize,
int  width,
int  height,
int  log2_scale,
const uint8_t  dither[8][8] 
)
static

Definition at line 159 of file vf_spp.c.

Referenced by init_dict().

◆ store_slice16_c()

static void store_slice16_c ( uint16_t *  dst,
const int16_t *  src,
int  dst_linesize,
int  src_linesize,
int  width,
int  height,
int  log2_scale,
const uint8_t  dither[8][8],
int  depth 
)
static

Definition at line 189 of file vf_spp.c.

Referenced by filter().

◆ add_block()

static void add_block ( uint16_t *  dst,
int  linesize,
const int16_t  block[64] 
)
inlinestatic

Definition at line 220 of file vf_spp.c.

Referenced by filter().

◆ filter()

static void filter ( SPPContext *  p,
uint8_t *  dst,
uint8_t *  src,
int  dst_linesize,
int  src_linesize,
int  width,
int  height,
const uint8_t *  qp_table,
int  qp_stride,
int  is_luma,
int  depth 
)
static

Definition at line 232 of file vf_spp.c.

Referenced by filter_frame().

◆ query_formats()

static int query_formats ( AVFilterContext *  ctx)
static

Definition at line 304 of file vf_spp.c.

◆ config_input()

static int config_input ( AVFilterLink *  inlink)
static

Definition at line 329 of file vf_spp.c.

◆ filter_frame()

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

Definition at line 353 of file vf_spp.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 442 of file vf_spp.c.

◆ init_dict()

static av_cold int init_dict ( AVFilterContext *  ctx,
AVDictionary **  opts 
)
static

Definition at line 457 of file vf_spp.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext *  ctx)
static

Definition at line 485 of file vf_spp.c.

Variable Documentation

◆ spp_options

const AVOption spp_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 },
{ "mode", "set thresholding mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_HARD}, 0, NB_MODES - 1, FLAGS, "mode" },
{ "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_HARD}, INT_MIN, INT_MAX, FLAGS, "mode" },
{ "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_SOFT}, INT_MIN, INT_MAX, FLAGS, "mode" },
{ "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
{ NULL }
}

Definition at line 60 of file vf_spp.c.

◆ spp_class

const AVClass spp_class
static
Initial value:
= {
.class_name = "spp",
.item_name = av_default_item_name,
.option = spp_options,
.version = LIBAVUTIL_VERSION_INT,
.category = AV_CLASS_CATEGORY_FILTER,
.child_class_next = child_class_next,
.child_next = child_next,
}

Definition at line 70 of file vf_spp.c.

◆ ldither

const uint8_t ldither[8][8]
static
Initial value:
= {
{ 0, 48, 12, 60, 3, 51, 15, 63 },
{ 32, 16, 44, 28, 35, 19, 47, 31 },
{ 8, 56, 4, 52, 11, 59, 7, 55 },
{ 40, 24, 36, 20, 43, 27, 39, 23 },
{ 2, 50, 14, 62, 1, 49, 13, 61 },
{ 34, 18, 46, 30, 33, 17, 45, 29 },
{ 10, 58, 6, 54, 9, 57, 5, 53 },
{ 42, 26, 38, 22, 41, 25, 37, 21 },
}

Definition at line 81 of file vf_spp.c.

Referenced by filter().

◆ offset

const uint8_t offset[127][2]
static
Initial value:
= {
{0,0},
{0,0}, {4,4},
{0,0}, {2,2}, {6,4}, {4,6},
{0,0}, {5,1}, {2,2}, {7,3}, {4,4}, {1,5}, {6,6}, {3,7},
{0,0}, {4,0}, {1,1}, {5,1}, {3,2}, {7,2}, {2,3}, {6,3},
{0,4}, {4,4}, {1,5}, {5,5}, {3,6}, {7,6}, {2,7}, {6,7},
{0,0}, {0,2}, {0,4}, {0,6}, {1,1}, {1,3}, {1,5}, {1,7},
{2,0}, {2,2}, {2,4}, {2,6}, {3,1}, {3,3}, {3,5}, {3,7},
{4,0}, {4,2}, {4,4}, {4,6}, {5,1}, {5,3}, {5,5}, {5,7},
{6,0}, {6,2}, {6,4}, {6,6}, {7,1}, {7,3}, {7,5}, {7,7},
{0,0}, {4,4}, {0,4}, {4,0}, {2,2}, {6,6}, {2,6}, {6,2},
{0,2}, {4,6}, {0,6}, {4,2}, {2,0}, {6,4}, {2,4}, {6,0},
{1,1}, {5,5}, {1,5}, {5,1}, {3,3}, {7,7}, {3,7}, {7,3},
{1,3}, {5,7}, {1,7}, {5,3}, {3,1}, {7,5}, {3,5}, {7,1},
{0,1}, {4,5}, {0,5}, {4,1}, {2,3}, {6,7}, {2,7}, {6,3},
{0,3}, {4,7}, {0,7}, {4,3}, {2,1}, {6,5}, {2,5}, {6,1},
{1,0}, {5,4}, {1,4}, {5,0}, {3,2}, {7,6}, {3,6}, {7,2},
{1,2}, {5,6}, {1,6}, {5,2}, {3,0}, {7,4}, {3,4}, {7,0},
}

Definition at line 92 of file vf_spp.c.

Referenced by filter().

◆ spp_inputs

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

Definition at line 499 of file vf_spp.c.

◆ spp_outputs

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

Definition at line 509 of file vf_spp.c.

◆ ff_vf_spp

AVFilter ff_vf_spp
Initial value:
= {
.name = "spp",
.description = NULL_IF_CONFIG_SMALL("Apply a simple post processing filter."),
.priv_size = sizeof(SPPContext),
.init_dict = init_dict,
.uninit = uninit,
.query_formats = query_formats,
.inputs = spp_inputs,
.outputs = spp_outputs,
.process_command = process_command,
.priv_class = &spp_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
}

Definition at line 517 of file vf_spp.c.

filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_spp.c:353
spp_options
static const AVOption spp_options[]
Definition: vf_spp.c:60
MODE_SOFT
@ MODE_SOFT
Definition: vf_spp.c:43
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: vf_spp.c:442
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_spp.c:304
child_class_next
static const AVClass * child_class_next(const AVClass *prev)
Definition: vf_spp.c:47
src
#define src
Definition: vp8dsp.c:254
spp_class
static const AVClass spp_class
Definition: vf_spp.c:70
OFFSET
#define OFFSET(x)
Definition: vf_spp.c:58
NB_MODES
@ NB_MODES
Definition: vf_spp.c:44
mask
static const uint16_t mask[17]
Definition: lzw.c:38
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_spp.c:485
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
AV_CLASS_CATEGORY_FILTER
@ AV_CLASS_CATEGORY_FILTER
Definition: log.h:37
SPPContext
Definition: vf_spp.h:31
MAX_LEVEL
#define MAX_LEVEL
Definition: rl.h:36
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:188
AVClass::child_next
void *(* child_next)(void *obj, void *prev)
Return next AVOptions-enabled child or NULL.
Definition: log.h:113
config_input
static int config_input(AVFilterLink *inlink)
Definition: vf_spp.c:329
init_dict
static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts)
Definition: vf_spp.c:457
FLAGS
#define FLAGS
Definition: vf_spp.c:59
spp_inputs
static const AVFilterPad spp_inputs[]
Definition: vf_spp.c:499
spp_outputs
static const AVFilterPad spp_outputs[]
Definition: vf_spp.c:509
mode
mode
Definition: ebur128.h:83
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
temp
else temp
Definition: vf_mcdeint.c:256
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:240
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:133
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:565
child_next
static void * child_next(void *obj, void *prev)
Definition: vf_spp.c:52
MODE_HARD
@ MODE_HARD
Definition: vf_spp.c:42
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:232
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