mirror of https://github.com/FFmpeg/FFmpeg.git
Clément Bœsch
12 years ago
parent
35188e91ef
commit
b1e84efa3d
8 changed files with 374 additions and 1 deletions
@ -0,0 +1,342 @@ |
|||||||
|
/*
|
||||||
|
* Copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at> |
||||||
|
* Copyright (c) 2013 Clément Bœsch <ubitux@gmail.com> |
||||||
|
* |
||||||
|
* This file is part of FFmpeg. |
||||||
|
* |
||||||
|
* FFmpeg is free software; you can redistribute it and/or modify |
||||||
|
* it under the terms of the GNU General Public License as published by |
||||||
|
* the Free Software Foundation; either version 2 of the License, or |
||||||
|
* (at your option) any later version. |
||||||
|
* |
||||||
|
* FFmpeg is distributed in the hope that it will be useful, |
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||||
|
* GNU General Public License for more details. |
||||||
|
* |
||||||
|
* You should have received a copy of the GNU General Public License along |
||||||
|
* with FFmpeg; if not, write to the Free Software Foundation, Inc., |
||||||
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
||||||
|
*/ |
||||||
|
|
||||||
|
/**
|
||||||
|
* @todo try to change to int |
||||||
|
* @todo try lifting based implementation |
||||||
|
* @todo optimize optimize optimize |
||||||
|
* @todo hard thresholding |
||||||
|
* @todo use QP to decide filter strength |
||||||
|
* @todo wavelet normalization / least squares optimal signal vs. noise thresholds |
||||||
|
*/ |
||||||
|
|
||||||
|
#include "libavutil/imgutils.h" |
||||||
|
#include "libavutil/opt.h" |
||||||
|
#include "libavutil/pixdesc.h" |
||||||
|
#include "avfilter.h" |
||||||
|
#include "internal.h" |
||||||
|
|
||||||
|
typedef struct { |
||||||
|
const AVClass *class; |
||||||
|
double luma_strength; |
||||||
|
double chroma_strength; |
||||||
|
int depth; |
||||||
|
float *plane[16+1][4]; |
||||||
|
int linesize; |
||||||
|
int hsub, vsub; |
||||||
|
} OWDenoiseContext; |
||||||
|
|
||||||
|
#define OFFSET(x) offsetof(OWDenoiseContext, x) |
||||||
|
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
||||||
|
static const AVOption owdenoise_options[] = { |
||||||
|
{ "depth", "set depth", OFFSET(depth), AV_OPT_TYPE_INT, {.i64 = 8}, 8, 16, FLAGS }, |
||||||
|
{ "luma_strength", "set luma strength", OFFSET(luma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
||||||
|
{ "ls", "set luma strength", OFFSET(luma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
||||||
|
{ "chroma_strength", "set chroma strength", OFFSET(chroma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
||||||
|
{ "cs", "set chroma strength", OFFSET(chroma_strength), AV_OPT_TYPE_DOUBLE, {.dbl = 1.0}, 0, 1000, FLAGS }, |
||||||
|
{ NULL } |
||||||
|
}; |
||||||
|
|
||||||
|
AVFILTER_DEFINE_CLASS(owdenoise); |
||||||
|
|
||||||
|
DECLARE_ALIGNED(8, static const uint8_t, dither)[8][8] = { |
||||||
|
{ 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 }, |
||||||
|
}; |
||||||
|
|
||||||
|
static const double coeff[2][5] = { |
||||||
|
{ |
||||||
|
0.6029490182363579 * M_SQRT2, |
||||||
|
0.2668641184428723 * M_SQRT2, |
||||||
|
-0.07822326652898785 * M_SQRT2, |
||||||
|
-0.01686411844287495 * M_SQRT2, |
||||||
|
0.02674875741080976 * M_SQRT2, |
||||||
|
},{ |
||||||
|
1.115087052456994 / M_SQRT2, |
||||||
|
-0.5912717631142470 / M_SQRT2, |
||||||
|
-0.05754352622849957 / M_SQRT2, |
||||||
|
0.09127176311424948 / M_SQRT2, |
||||||
|
} |
||||||
|
}; |
||||||
|
|
||||||
|
static const double icoeff[2][5] = { |
||||||
|
{ |
||||||
|
1.115087052456994 / M_SQRT2, |
||||||
|
0.5912717631142470 / M_SQRT2, |
||||||
|
-0.05754352622849957 / M_SQRT2, |
||||||
|
-0.09127176311424948 / M_SQRT2, |
||||||
|
},{ |
||||||
|
0.6029490182363579 * M_SQRT2, |
||||||
|
-0.2668641184428723 * M_SQRT2, |
||||||
|
-0.07822326652898785 * M_SQRT2, |
||||||
|
0.01686411844287495 * M_SQRT2, |
||||||
|
0.02674875741080976 * M_SQRT2, |
||||||
|
} |
||||||
|
}; |
||||||
|
|
||||||
|
static inline int mirror(int x, int w) |
||||||
|
{ |
||||||
|
while ((unsigned)x > (unsigned)w) { |
||||||
|
x = -x; |
||||||
|
if (x < 0) |
||||||
|
x += 2 * w; |
||||||
|
} |
||||||
|
return x; |
||||||
|
} |
||||||
|
|
||||||
|
static inline void decompose(float *dst_l, float *dst_h, const float *src, |
||||||
|
int linesize, int w) |
||||||
|
{ |
||||||
|
int x, i; |
||||||
|
for (x = 0; x < w; x++) { |
||||||
|
double sum_l = src[x * linesize] * coeff[0][0]; |
||||||
|
double sum_h = src[x * linesize] * coeff[1][0]; |
||||||
|
for (i = 1; i <= 4; i++) { |
||||||
|
const double s = src[mirror(x - i, w - 1) * linesize] |
||||||
|
+ src[mirror(x + i, w - 1) * linesize]; |
||||||
|
|
||||||
|
sum_l += coeff[0][i] * s; |
||||||
|
sum_h += coeff[1][i] * s; |
||||||
|
} |
||||||
|
dst_l[x * linesize] = sum_l; |
||||||
|
dst_h[x * linesize] = sum_h; |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
static inline void compose(float *dst, const float *src_l, const float *src_h, |
||||||
|
int linesize, int w) |
||||||
|
{ |
||||||
|
int x, i; |
||||||
|
for (x = 0; x < w; x++) { |
||||||
|
double sum_l = src_l[x * linesize] * icoeff[0][0]; |
||||||
|
double sum_h = src_h[x * linesize] * icoeff[1][0]; |
||||||
|
for (i = 1; i <= 4; i++) { |
||||||
|
const int x0 = mirror(x - i, w - 1) * linesize; |
||||||
|
const int x1 = mirror(x + i, w - 1) * linesize; |
||||||
|
|
||||||
|
sum_l += icoeff[0][i] * (src_l[x0] + src_l[x1]); |
||||||
|
sum_h += icoeff[1][i] * (src_h[x0] + src_h[x1]); |
||||||
|
} |
||||||
|
dst[x * linesize] = (sum_l + sum_h) * 0.5; |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
static inline void decompose2D(float *dst_l, float *dst_h, const float *src, |
||||||
|
int xlinesize, int ylinesize, |
||||||
|
int step, int w, int h) |
||||||
|
{ |
||||||
|
int y, x; |
||||||
|
for (y = 0; y < h; y++) |
||||||
|
for (x = 0; x < step; x++) |
||||||
|
decompose(dst_l + ylinesize*y + xlinesize*x, |
||||||
|
dst_h + ylinesize*y + xlinesize*x, |
||||||
|
src + ylinesize*y + xlinesize*x, |
||||||
|
step * xlinesize, (w - x + step - 1) / step); |
||||||
|
} |
||||||
|
|
||||||
|
static inline void compose2D(float *dst, const float *src_l, const float *src_h, |
||||||
|
int xlinesize, int ylinesize, |
||||||
|
int step, int w, int h) |
||||||
|
{ |
||||||
|
int y, x; |
||||||
|
for (y = 0; y < h; y++) |
||||||
|
for (x = 0; x < step; x++) |
||||||
|
compose(dst + ylinesize*y + xlinesize*x, |
||||||
|
src_l + ylinesize*y + xlinesize*x, |
||||||
|
src_h + ylinesize*y + xlinesize*x, |
||||||
|
step * xlinesize, (w - x + step - 1) / step); |
||||||
|
} |
||||||
|
|
||||||
|
static void decompose2D2(float *dst[4], float *src, float *temp[2], |
||||||
|
int linesize, int step, int w, int h) |
||||||
|
{ |
||||||
|
decompose2D(temp[0], temp[1], src, 1, linesize, step, w, h); |
||||||
|
decompose2D( dst[0], dst[1], temp[0], linesize, 1, step, h, w); |
||||||
|
decompose2D( dst[2], dst[3], temp[1], linesize, 1, step, h, w); |
||||||
|
} |
||||||
|
|
||||||
|
static void compose2D2(float *dst, float *src[4], float *temp[2], |
||||||
|
int linesize, int step, int w, int h) |
||||||
|
{ |
||||||
|
compose2D(temp[0], src[0], src[1], linesize, 1, step, h, w); |
||||||
|
compose2D(temp[1], src[2], src[3], linesize, 1, step, h, w); |
||||||
|
compose2D(dst, temp[0], temp[1], 1, linesize, step, w, h); |
||||||
|
} |
||||||
|
|
||||||
|
static void filter(OWDenoiseContext *s, |
||||||
|
uint8_t *dst, int dst_linesize, |
||||||
|
const uint8_t *src, int src_linesize, |
||||||
|
int width, int height, double strength) |
||||||
|
{ |
||||||
|
int x, y, i, j, depth = s->depth; |
||||||
|
|
||||||
|
while (1<<depth > width || 1<<depth > height) |
||||||
|
depth--; |
||||||
|
|
||||||
|
for (y = 0; y < height; y++) |
||||||
|
for(x = 0; x < width; x++) |
||||||
|
s->plane[0][0][y*s->linesize + x] = src[y*src_linesize + x]; |
||||||
|
|
||||||
|
for (i = 0; i < depth; i++) |
||||||
|
decompose2D2(s->plane[i + 1], s->plane[i][0], s->plane[0] + 1, s->linesize, 1<<i, width, height); |
||||||
|
|
||||||
|
for (i = 0; i < depth; i++) { |
||||||
|
for (j = 1; j < 4; j++) { |
||||||
|
for (y = 0; y < height; y++) { |
||||||
|
for (x = 0; x < width; x++) { |
||||||
|
double v = s->plane[i + 1][j][y*s->linesize + x]; |
||||||
|
if (v > strength) v -= strength; |
||||||
|
else if (v < -strength) v += strength; |
||||||
|
else v = 0; |
||||||
|
s->plane[i + 1][j][x + y*s->linesize] = v; |
||||||
|
} |
||||||
|
} |
||||||
|
} |
||||||
|
} |
||||||
|
for (i = depth-1; i >= 0; i--) |
||||||
|
compose2D2(s->plane[i][0], s->plane[i + 1], s->plane[0] + 1, s->linesize, 1<<i, width, height); |
||||||
|
|
||||||
|
for (y = 0; y < height; y++) { |
||||||
|
for (x = 0; x < width; x++) { |
||||||
|
i = s->plane[0][0][y*s->linesize + x] + dither[x&7][y&7]*(1.0/64) + 1.0/128; // yes the rounding is insane but optimal :)
|
||||||
|
if ((unsigned)i > 255U) i = ~(i >> 31); |
||||||
|
dst[y*dst_linesize + x] = i; |
||||||
|
} |
||||||
|
} |
||||||
|
} |
||||||
|
|
||||||
|
static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
||||||
|
{ |
||||||
|
int direct = 0; |
||||||
|
AVFilterContext *ctx = inlink->dst; |
||||||
|
OWDenoiseContext *s = ctx->priv; |
||||||
|
AVFilterLink *outlink = ctx->outputs[0]; |
||||||
|
AVFrame *out; |
||||||
|
const int cw = FF_CEIL_RSHIFT(inlink->w, s->hsub); |
||||||
|
const int ch = FF_CEIL_RSHIFT(inlink->h, s->vsub); |
||||||
|
|
||||||
|
if (av_frame_is_writable(in)) { |
||||||
|
direct = 1; |
||||||
|
out = in; |
||||||
|
} else { |
||||||
|
out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
||||||
|
if (!out) { |
||||||
|
av_frame_free(&in); |
||||||
|
return AVERROR(ENOMEM); |
||||||
|
} |
||||||
|
av_frame_copy_props(out, in); |
||||||
|
} |
||||||
|
|
||||||
|
filter(s, out->data[0], out->linesize[0], in->data[0], in->linesize[0], inlink->w, inlink->h, s->luma_strength); |
||||||
|
filter(s, out->data[1], out->linesize[1], in->data[1], in->linesize[1], cw, ch, s->chroma_strength); |
||||||
|
filter(s, out->data[2], out->linesize[2], in->data[2], in->linesize[2], cw, ch, s->chroma_strength); |
||||||
|
|
||||||
|
if (!direct) { |
||||||
|
if (in->data[3]) |
||||||
|
av_image_copy_plane(out->data[3], out->linesize[3], |
||||||
|
in ->data[3], in ->linesize[3], |
||||||
|
inlink->w, inlink->h); |
||||||
|
av_frame_free(&in); |
||||||
|
} |
||||||
|
|
||||||
|
return ff_filter_frame(outlink, out); |
||||||
|
} |
||||||
|
|
||||||
|
static int query_formats(AVFilterContext *ctx) |
||||||
|
{ |
||||||
|
static const enum AVPixelFormat pix_fmts[] = { |
||||||
|
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, |
||||||
|
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, |
||||||
|
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, |
||||||
|
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, |
||||||
|
AV_PIX_FMT_YUVA420P, |
||||||
|
AV_PIX_FMT_NONE |
||||||
|
}; |
||||||
|
ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
||||||
|
return 0; |
||||||
|
} |
||||||
|
|
||||||
|
static int config_input(AVFilterLink *inlink) |
||||||
|
{ |
||||||
|
int i, j; |
||||||
|
OWDenoiseContext *s = inlink->dst->priv; |
||||||
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
||||||
|
const int h = FFALIGN(inlink->h, 16); |
||||||
|
|
||||||
|
s->hsub = desc->log2_chroma_w; |
||||||
|
s->vsub = desc->log2_chroma_h; |
||||||
|
|
||||||
|
s->linesize = FFALIGN(inlink->w, 16); |
||||||
|
for (j = 0; j < 4; j++) { |
||||||
|
for (i = 0; i <= s->depth; i++) { |
||||||
|
s->plane[i][j] = av_malloc(s->linesize * h * sizeof(s->plane[0][0][0])); |
||||||
|
if (!s->plane[i][j]) |
||||||
|
return AVERROR(ENOMEM); |
||||||
|
} |
||||||
|
} |
||||||
|
return 0; |
||||||
|
} |
||||||
|
|
||||||
|
static av_cold void uninit(AVFilterContext *ctx) |
||||||
|
{ |
||||||
|
int i, j; |
||||||
|
OWDenoiseContext *s = ctx->priv; |
||||||
|
|
||||||
|
for (j = 0; j < 4; j++) |
||||||
|
for (i = 0; i <= s->depth; i++) |
||||||
|
av_freep(&s->plane[i][j]); |
||||||
|
} |
||||||
|
|
||||||
|
static const AVFilterPad owdenoise_inputs[] = { |
||||||
|
{ |
||||||
|
.name = "default", |
||||||
|
.type = AVMEDIA_TYPE_VIDEO, |
||||||
|
.filter_frame = filter_frame, |
||||||
|
.config_props = config_input, |
||||||
|
}, |
||||||
|
{ NULL } |
||||||
|
}; |
||||||
|
|
||||||
|
static const AVFilterPad owdenoise_outputs[] = { |
||||||
|
{ |
||||||
|
.name = "default", |
||||||
|
.type = AVMEDIA_TYPE_VIDEO, |
||||||
|
}, |
||||||
|
{ NULL } |
||||||
|
}; |
||||||
|
|
||||||
|
AVFilter avfilter_vf_owdenoise = { |
||||||
|
.name = "owdenoise", |
||||||
|
.description = NULL_IF_CONFIG_SMALL("Denoise using wavelets."), |
||||||
|
.priv_size = sizeof(OWDenoiseContext), |
||||||
|
.uninit = uninit, |
||||||
|
.query_formats = query_formats, |
||||||
|
.inputs = owdenoise_inputs, |
||||||
|
.outputs = owdenoise_outputs, |
||||||
|
.priv_class = &owdenoise_class, |
||||||
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
||||||
|
}; |
||||||
Loading…
Reference in new issue