mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
7 years ago
parent
e5ba5fab49
commit
21da248b5f
6 changed files with 479 additions and 1 deletions
@ -0,0 +1,413 @@ |
||||
/*
|
||||
* Copyright (c) 2018 Paul B Mahol |
||||
* |
||||
* This file is part of FFmpeg. |
||||
* |
||||
* FFmpeg is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU Lesser General Public |
||||
* License as published by the Free Software Foundation; either |
||||
* version 2.1 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 |
||||
* Lesser General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU Lesser 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 |
||||
*/ |
||||
|
||||
/*
|
||||
* Based on paper: A Simple and Efficient Deblocking Algorithm for Low Bit-Rate Video Coding. |
||||
*/ |
||||
|
||||
#include "libavutil/imgutils.h" |
||||
#include "libavutil/opt.h" |
||||
#include "libavutil/pixdesc.h" |
||||
|
||||
#include "avfilter.h" |
||||
#include "formats.h" |
||||
#include "internal.h" |
||||
#include "video.h" |
||||
|
||||
enum FilterType { WEAK, STRONG, NB_FILTER }; |
||||
|
||||
typedef struct DeblockContext { |
||||
const AVClass *class; |
||||
const AVPixFmtDescriptor *desc; |
||||
int filter; |
||||
int block; |
||||
int planes; |
||||
float alpha; |
||||
float beta; |
||||
float gamma; |
||||
float delta; |
||||
|
||||
int ath; |
||||
int bth; |
||||
int gth; |
||||
int dth; |
||||
int max; |
||||
int depth; |
||||
int bpc; |
||||
int nb_planes; |
||||
int planewidth[4]; |
||||
int planeheight[4]; |
||||
|
||||
void (*deblockh)(uint8_t *dst, ptrdiff_t dst_linesize, int block, |
||||
int ath, int bth, int gth, int dth, int max); |
||||
void (*deblockv)(uint8_t *dst, ptrdiff_t dst_linesize, int block, |
||||
int ath, int bth, int gth, int dth, int max); |
||||
} DeblockContext; |
||||
|
||||
static int query_formats(AVFilterContext *ctx) |
||||
{ |
||||
static const enum AVPixelFormat pixel_fmts[] = { |
||||
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, |
||||
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, |
||||
AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, |
||||
AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, |
||||
AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, |
||||
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, |
||||
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, |
||||
AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, |
||||
AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, |
||||
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, |
||||
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, |
||||
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, |
||||
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, |
||||
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, |
||||
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, |
||||
AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, |
||||
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16, |
||||
AV_PIX_FMT_NONE |
||||
}; |
||||
AVFilterFormats *formats = ff_make_format_list(pixel_fmts); |
||||
if (!formats) |
||||
return AVERROR(ENOMEM); |
||||
return ff_set_common_formats(ctx, formats); |
||||
} |
||||
|
||||
#define WEAK_HFILTER(name, type, ldiv) \ |
||||
static void deblockh##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
|
||||
int ath, int bth, int gth, int dth, int max) \
|
||||
{ \
|
||||
type *dst; \
|
||||
int x; \
|
||||
\
|
||||
dst = (type *)dstp; \
|
||||
dst_linesize /= ldiv; \
|
||||
\
|
||||
for (x = 0; x < block; x++) { \
|
||||
int delta = dst[x] - dst[x - dst_linesize]; \
|
||||
int A, B, C, D, a, b, c, d; \
|
||||
\
|
||||
if (FFABS(delta) >= ath || \
|
||||
FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
|
||||
FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= gth) \
|
||||
continue; \
|
||||
\
|
||||
A = dst[x - 2 * dst_linesize]; \
|
||||
B = dst[x - 1 * dst_linesize]; \
|
||||
C = dst[x + 0 * dst_linesize]; \
|
||||
D = dst[x + 1 * dst_linesize]; \
|
||||
\
|
||||
a = A + delta / 8; \
|
||||
b = B + delta / 2; \
|
||||
c = C - delta / 2; \
|
||||
d = D - delta / 8; \
|
||||
\
|
||||
dst[x - 2 * dst_linesize] = av_clip(a, 0, max); \
|
||||
dst[x - 1 * dst_linesize] = av_clip(b, 0, max); \
|
||||
dst[x + 0 * dst_linesize] = av_clip(c, 0, max); \
|
||||
dst[x + 1 * dst_linesize] = av_clip(d, 0, max); \
|
||||
} \
|
||||
} |
||||
|
||||
WEAK_HFILTER(8, uint8_t, 1) |
||||
WEAK_HFILTER(16, uint16_t, 2) |
||||
|
||||
#define WEAK_VFILTER(name, type, ldiv) \ |
||||
static void deblockv##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \
|
||||
int ath, int bth, int gth, int dth, int max) \
|
||||
{ \
|
||||
type *dst; \
|
||||
int y; \
|
||||
\
|
||||
dst = (type *)dstp; \
|
||||
dst_linesize /= ldiv; \
|
||||
\
|
||||
for (y = 0; y < block; y++) { \
|
||||
int delta = dst[0] - dst[-1]; \
|
||||
int A, B, C, D, a, b, c, d; \
|
||||
\
|
||||
if (FFABS(delta) >= ath || \
|
||||
FFABS(dst[-1] - dst[-2]) >= bth || \
|
||||
FFABS(dst[0] - dst[1]) >= gth) \
|
||||
continue; \
|
||||
\
|
||||
A = dst[-2]; \
|
||||
B = dst[-1]; \
|
||||
C = dst[+0]; \
|
||||
D = dst[+1]; \
|
||||
\
|
||||
a = A + delta / 8; \
|
||||
b = B + delta / 2; \
|
||||
c = C - delta / 2; \
|
||||
d = D - delta / 8; \
|
||||
\
|
||||
dst[-2] = av_clip(a, 0, max); \
|
||||
dst[-1] = av_clip(b, 0, max); \
|
||||
dst[+0] = av_clip(c, 0, max); \
|
||||
dst[+1] = av_clip(d, 0, max); \
|
||||
\
|
||||
dst += dst_linesize; \
|
||||
} \
|
||||
} |
||||
|
||||
WEAK_VFILTER(8, uint8_t, 1) |
||||
WEAK_VFILTER(16, uint16_t, 2) |
||||
|
||||
#define STRONG_HFILTER(name, type, ldiv) \ |
||||
static void deblockh##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
|
||||
int ath, int bth, int gth, int dth, int max) \
|
||||
{ \
|
||||
type *dst; \
|
||||
int x; \
|
||||
\
|
||||
dst = (type *)dstp; \
|
||||
dst_linesize /= ldiv; \
|
||||
\
|
||||
for (x = 0; x < block; x++) { \
|
||||
int A, B, C, D, E, F, a, b, c, d, e, f; \
|
||||
int delta = dst[x] - dst[x - dst_linesize]; \
|
||||
\
|
||||
if (FFABS(delta) >= ath || \
|
||||
FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \
|
||||
FFABS(dst[x + 1 * dst_linesize] - dst[x + 2 * dst_linesize]) >= gth || \
|
||||
FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= dth) \
|
||||
continue; \
|
||||
\
|
||||
A = dst[x - 3 * dst_linesize]; \
|
||||
B = dst[x - 2 * dst_linesize]; \
|
||||
C = dst[x - 1 * dst_linesize]; \
|
||||
D = dst[x + 0 * dst_linesize]; \
|
||||
E = dst[x + 1 * dst_linesize]; \
|
||||
F = dst[x + 2 * dst_linesize]; \
|
||||
\
|
||||
a = A + delta / 8; \
|
||||
b = B + delta / 4; \
|
||||
c = C + delta / 2; \
|
||||
d = D - delta / 2; \
|
||||
e = E - delta / 4; \
|
||||
f = F - delta / 8; \
|
||||
\
|
||||
dst[x - 3 * dst_linesize] = av_clip(a, 0, max); \
|
||||
dst[x - 2 * dst_linesize] = av_clip(b, 0, max); \
|
||||
dst[x - 1 * dst_linesize] = av_clip(c, 0, max); \
|
||||
dst[x + 0 * dst_linesize] = av_clip(d, 0, max); \
|
||||
dst[x + 1 * dst_linesize] = av_clip(e, 0, max); \
|
||||
dst[x + 2 * dst_linesize] = av_clip(f, 0, max); \
|
||||
} \
|
||||
} |
||||
|
||||
STRONG_HFILTER(8, uint8_t, 1) |
||||
STRONG_HFILTER(16, uint16_t, 2) |
||||
|
||||
#define STRONG_VFILTER(name, type, ldiv) \ |
||||
static void deblockv##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\
|
||||
int ath, int bth, int gth, int dth, int max) \
|
||||
{ \
|
||||
type *dst; \
|
||||
int y; \
|
||||
\
|
||||
dst = (type *)dstp; \
|
||||
dst_linesize /= ldiv; \
|
||||
\
|
||||
for (y = 0; y < block; y++) { \
|
||||
int A, B, C, D, E, F, a, b, c, d, e, f; \
|
||||
int delta = dst[0] - dst[-1]; \
|
||||
\
|
||||
if (FFABS(delta) >= ath || \
|
||||
FFABS(dst[-1] - dst[-2]) >= bth || \
|
||||
FFABS(dst[+1] - dst[+2]) >= gth || \
|
||||
FFABS(dst[+0] - dst[+1]) >= dth) \
|
||||
continue; \
|
||||
\
|
||||
A = dst[-3]; \
|
||||
B = dst[-2]; \
|
||||
C = dst[-1]; \
|
||||
D = dst[+0]; \
|
||||
E = dst[+1]; \
|
||||
F = dst[+2]; \
|
||||
\
|
||||
a = A + delta / 8; \
|
||||
b = B + delta / 4; \
|
||||
c = C + delta / 2; \
|
||||
d = D - delta / 2; \
|
||||
e = E - delta / 4; \
|
||||
f = F - delta / 8; \
|
||||
\
|
||||
dst[-3] = av_clip(a, 0, max); \
|
||||
dst[-2] = av_clip(b, 0, max); \
|
||||
dst[-1] = av_clip(c, 0, max); \
|
||||
dst[+0] = av_clip(d, 0, max); \
|
||||
dst[+1] = av_clip(e, 0, max); \
|
||||
dst[+2] = av_clip(f, 0, max); \
|
||||
\
|
||||
dst += dst_linesize; \
|
||||
} \
|
||||
} |
||||
|
||||
STRONG_VFILTER(8, uint8_t, 1) |
||||
STRONG_VFILTER(16, uint16_t, 2) |
||||
|
||||
static int config_output(AVFilterLink *outlink) |
||||
{ |
||||
AVFilterContext *ctx = outlink->src; |
||||
DeblockContext *s = ctx->priv; |
||||
AVFilterLink *inlink = ctx->inputs[0]; |
||||
|
||||
s->desc = av_pix_fmt_desc_get(outlink->format); |
||||
if (!s->desc) |
||||
return AVERROR_BUG; |
||||
s->nb_planes = av_pix_fmt_count_planes(outlink->format); |
||||
s->depth = s->desc->comp[0].depth; |
||||
s->bpc = (s->depth + 7) / 8; |
||||
s->max = (1 << s->depth) - 1; |
||||
s->ath = s->alpha * s->max; |
||||
s->bth = s->beta * s->max; |
||||
s->gth = s->gamma * s->max; |
||||
s->dth = s->delta * s->max; |
||||
|
||||
if (s->depth <= 8 && s->filter == WEAK) { |
||||
s->deblockh = deblockh8_weak; |
||||
s->deblockv = deblockv8_weak; |
||||
} else if (s->depth >= 8 && s->filter == WEAK) { |
||||
s->deblockh = deblockh16_weak; |
||||
s->deblockv = deblockv16_weak; |
||||
} |
||||
if (s->depth <= 8 && s->filter == STRONG) { |
||||
s->deblockh = deblockh8_strong; |
||||
s->deblockv = deblockv8_strong; |
||||
} else if (s->depth >= 8 && s->filter == STRONG) { |
||||
s->deblockh = deblockh16_strong; |
||||
s->deblockv = deblockv16_strong; |
||||
} |
||||
|
||||
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w); |
||||
s->planewidth[0] = s->planewidth[3] = inlink->w; |
||||
|
||||
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h); |
||||
s->planeheight[0] = s->planeheight[3] = inlink->h; |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
||||
{ |
||||
AVFilterContext *ctx = inlink->dst; |
||||
AVFilterLink *outlink = ctx->outputs[0]; |
||||
DeblockContext *s = ctx->priv; |
||||
const int block = s->block; |
||||
AVFrame *out; |
||||
int plane, x, y; |
||||
|
||||
if (av_frame_is_writable(in)) { |
||||
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); |
||||
} |
||||
|
||||
for (plane = 0; plane < s->nb_planes; plane++) { |
||||
const int width = s->planewidth[plane]; |
||||
const int height = s->planeheight[plane]; |
||||
const uint8_t *src = (const uint8_t *)in->data[plane]; |
||||
uint8_t *dst = (uint8_t *)out->data[plane]; |
||||
|
||||
if (in != out) |
||||
av_image_copy_plane(dst, out->linesize[plane], |
||||
src, in->linesize[plane], |
||||
width * s->bpc, height); |
||||
|
||||
if (!((1 << plane) & s->planes)) |
||||
continue; |
||||
|
||||
for (x = block; x < width; x += block) |
||||
s->deblockv(dst + x * s->bpc, out->linesize[plane], |
||||
FFMIN(block, height), s->ath, s->bth, s->gth, s->dth, s->max); |
||||
|
||||
for (y = block; y < height; y += block) { |
||||
dst += out->linesize[plane] * block; |
||||
|
||||
s->deblockh(dst, out->linesize[plane], |
||||
FFMIN(block, width), |
||||
s->ath, s->bth, s->gth, s->dth, s->max); |
||||
|
||||
for (x = block; x < width; x += block) { |
||||
s->deblockh(dst + x * s->bpc, out->linesize[plane], |
||||
FFMIN(block, width - x), |
||||
s->ath, s->bth, s->gth, s->dth, s->max); |
||||
s->deblockv(dst + x * s->bpc, out->linesize[plane], |
||||
FFMIN(block, height - y), |
||||
s->ath, s->bth, s->gth, s->dth, s->max); |
||||
} |
||||
} |
||||
} |
||||
|
||||
if (in != out) |
||||
av_frame_free(&in); |
||||
return ff_filter_frame(outlink, out); |
||||
} |
||||
|
||||
#define OFFSET(x) offsetof(DeblockContext, x) |
||||
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
||||
|
||||
static const AVOption deblock_options[] = { |
||||
{ "filter", "set type of filter", OFFSET(filter), AV_OPT_TYPE_INT, {.i64=STRONG},0, 1, FLAGS, "filter" }, |
||||
{ "weak", 0, 0, AV_OPT_TYPE_CONST, {.i64=WEAK}, 0, 0, FLAGS, "filter" }, |
||||
{ "strong", 0, 0, AV_OPT_TYPE_CONST, {.i64=STRONG},0, 0, FLAGS, "filter" }, |
||||
{ "block", "set size of block", OFFSET(block), AV_OPT_TYPE_INT, {.i64=8}, 4, 512, FLAGS }, |
||||
{ "alpha", "set 1st detection threshold", OFFSET(alpha), AV_OPT_TYPE_FLOAT, {.dbl=.098}, 0, 1, FLAGS }, |
||||
{ "beta", "set 2nd detection threshold", OFFSET(beta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS }, |
||||
{ "gamma", "set 3rd detection threshold", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS }, |
||||
{ "delta", "set 4th detection threshold", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS }, |
||||
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS }, |
||||
{ NULL }, |
||||
}; |
||||
|
||||
static const AVFilterPad inputs[] = { |
||||
{ |
||||
.name = "default", |
||||
.type = AVMEDIA_TYPE_VIDEO, |
||||
.filter_frame = filter_frame, |
||||
}, |
||||
{ NULL } |
||||
}; |
||||
|
||||
static const AVFilterPad outputs[] = { |
||||
{ |
||||
.name = "default", |
||||
.type = AVMEDIA_TYPE_VIDEO, |
||||
.config_props = config_output, |
||||
}, |
||||
{ NULL } |
||||
}; |
||||
|
||||
AVFILTER_DEFINE_CLASS(deblock); |
||||
|
||||
AVFilter ff_vf_deblock = { |
||||
.name = "deblock", |
||||
.description = NULL_IF_CONFIG_SMALL("Deblock video."), |
||||
.priv_size = sizeof(DeblockContext), |
||||
.priv_class = &deblock_class, |
||||
.query_formats = query_formats, |
||||
.inputs = inputs, |
||||
.outputs = outputs, |
||||
}; |
||||
Loading…
Reference in new issue