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avfilter: add rgbashift filter

tags/n4.2
Paul B Mahol 7 years ago
parent
cfd421226c
commit
6da439219d
6 changed files with 252 additions and 10 deletions
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  1. +1
    -0
      Changelog
  2. +25
    -0
      doc/filters.texi
  3. +1
    -0
      libavfilter/Makefile
  4. +1
    -0
      libavfilter/allfilters.c
  5. +1
    -1
      libavfilter/version.h
  6. +223
    -9
      libavfilter/vf_chromashift.c

+ 1
- 0
Changelog View File

@@ -5,6 +5,7 @@ version <next>:
- tpad filter
- AV1 decoding support through libdav1d
- dedot filter
- chromashift and rgbashift filters


version 4.1:


+ 25
- 0
doc/filters.texi View File

@@ -14311,6 +14311,31 @@ trim=end=5,reverse
@end example
@end itemize

@section rgbashift
Shift R/G/B/A pixels horizontally and/or vertically.

The filter accepts the following options:
@table @option
@item rh
Set amount to shift red horizontally.
@item rv
Set amount to shift red vertically.
@item gh
Set amount to shift green horizontally.
@item gv
Set amount to shift green vertically.
@item bh
Set amount to shift blue horizontally.
@item bv
Set amount to shift blue vertically.
@item ah
Set amount to shift alpha horizontally.
@item av
Set amount to shift alpha vertically.
@item edge
Set edge mode, can be @var{smear}, default, or @var{warp}.
@end table

@section roberts
Apply roberts cross operator to input video stream.



+ 1
- 0
libavfilter/Makefile View File

@@ -330,6 +330,7 @@ OBJS-$(CONFIG_REMOVEGRAIN_FILTER) += vf_removegrain.o
OBJS-$(CONFIG_REMOVELOGO_FILTER) += bbox.o lswsutils.o lavfutils.o vf_removelogo.o
OBJS-$(CONFIG_REPEATFIELDS_FILTER) += vf_repeatfields.o
OBJS-$(CONFIG_REVERSE_FILTER) += f_reverse.o
OBJS-$(CONFIG_RGBASHIFT_FILTER) += vf_chromashift.o
OBJS-$(CONFIG_ROBERTS_FILTER) += vf_convolution.o
OBJS-$(CONFIG_ROBERTS_OPENCL_FILTER) += vf_convolution_opencl.o opencl.o \
opencl/convolution.o


+ 1
- 0
libavfilter/allfilters.c View File

@@ -314,6 +314,7 @@ extern AVFilter ff_vf_removegrain;
extern AVFilter ff_vf_removelogo;
extern AVFilter ff_vf_repeatfields;
extern AVFilter ff_vf_reverse;
extern AVFilter ff_vf_rgbashift;
extern AVFilter ff_vf_roberts;
extern AVFilter ff_vf_roberts_opencl;
extern AVFilter ff_vf_rotate;


+ 1
- 1
libavfilter/version.h View File

@@ -30,7 +30,7 @@
#include "libavutil/version.h"

#define LIBAVFILTER_VERSION_MAJOR 7
#define LIBAVFILTER_VERSION_MINOR 44
#define LIBAVFILTER_VERSION_MINOR 45
#define LIBAVFILTER_VERSION_MICRO 100

#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \


+ 223
- 9
libavfilter/vf_chromashift.c View File

@@ -35,8 +35,13 @@ typedef struct ChromaShiftContext {
const AVClass *class;
int cbh, cbv;
int crh, crv;
int rh, rv;
int gh, gv;
int bh, bv;
int ah, av;
int edge;

int nb_planes;
int depth;
int height[4];
int width[4];
@@ -44,12 +49,13 @@ typedef struct ChromaShiftContext {

AVFrame *in;

int is_rgbashift;
int (*filter_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} ChromaShiftContext;

static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pix_fmts[] = {
static const enum AVPixelFormat yuv_pix_fmts[] = {
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
@@ -62,6 +68,19 @@ static int query_formats(AVFilterContext *ctx)
AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat rgb_pix_fmts[] = {
AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRP9,
AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12,
AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
AV_PIX_FMT_NONE
};
const enum AVPixelFormat *pix_fmts;

if (!strcmp(ctx->filter->name, "rgbashift"))
pix_fmts = rgb_pix_fmts;
else
pix_fmts = yuv_pix_fmts;

AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
if (!fmts_list)
@@ -166,6 +185,162 @@ static int wrap_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int n
DEFINE_WRAP(8, uint8_t, 1)
DEFINE_WRAP(16, uint16_t, 2)

#define DEFINE_RGBASMEAR(depth, type, div) \
static int rgbasmear_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
ChromaShiftContext *s = ctx->priv; \
AVFrame *in = s->in; \
AVFrame *out = arg; \
const int srlinesize = in->linesize[2] / div; \
const int sglinesize = in->linesize[0] / div; \
const int sblinesize = in->linesize[1] / div; \
const int salinesize = in->linesize[3] / div; \
const int rlinesize = out->linesize[2] / div; \
const int glinesize = out->linesize[0] / div; \
const int blinesize = out->linesize[1] / div; \
const int alinesize = out->linesize[3] / div; \
const int rh = s->rh; \
const int rv = s->rv; \
const int gh = s->gh; \
const int gv = s->gv; \
const int bh = s->bh; \
const int bv = s->bv; \
const int ah = s->ah; \
const int av = s->av; \
const int h = s->height[1]; \
const int w = s->width[1]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
const type *sr = (const type *)in->data[2]; \
const type *sg = (const type *)in->data[0]; \
const type *sb = (const type *)in->data[1]; \
const type *sa = (const type *)in->data[3]; \
type *dr = (type *)out->data[2] + slice_start * rlinesize; \
type *dg = (type *)out->data[0] + slice_start * glinesize; \
type *db = (type *)out->data[1] + slice_start * blinesize; \
type *da = (type *)out->data[3] + slice_start * alinesize; \
\
for (int y = slice_start; y < slice_end; y++) { \
const int ry = av_clip(y - rv, 0, h-1) * srlinesize; \
const int gy = av_clip(y - gv, 0, h-1) * sglinesize; \
const int by = av_clip(y - bv, 0, h-1) * sblinesize; \
int ay; \
\
for (int x = 0; x < w; x++) { \
dr[x] = sr[av_clip(x - rh, 0, w - 1) + ry]; \
dg[x] = sg[av_clip(x - gh, 0, w - 1) + gy]; \
db[x] = sb[av_clip(x - bh, 0, w - 1) + by]; \
} \
\
dr += rlinesize; \
dg += glinesize; \
db += blinesize; \
\
if (s->nb_planes < 4) \
continue; \
ay = av_clip(y - av, 0, h-1) * salinesize; \
for (int x = 0; x < w; x++) { \
da[x] = sa[av_clip(x - ah, 0, w - 1) + ay]; \
} \
\
da += alinesize; \
} \
\
return 0; \
}

DEFINE_RGBASMEAR(8, uint8_t, 1)
DEFINE_RGBASMEAR(16, uint16_t, 2)

#define DEFINE_RGBAWRAP(depth, type, div) \
static int rgbawrap_slice ## depth(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
{ \
ChromaShiftContext *s = ctx->priv; \
AVFrame *in = s->in; \
AVFrame *out = arg; \
const int srlinesize = in->linesize[2] / div; \
const int sglinesize = in->linesize[0] / div; \
const int sblinesize = in->linesize[1] / div; \
const int salinesize = in->linesize[3] / div; \
const int rlinesize = out->linesize[2] / div; \
const int glinesize = out->linesize[0] / div; \
const int blinesize = out->linesize[1] / div; \
const int alinesize = out->linesize[3] / div; \
const int rh = s->rh; \
const int rv = s->rv; \
const int gh = s->gh; \
const int gv = s->gv; \
const int bh = s->bh; \
const int bv = s->bv; \
const int ah = s->ah; \
const int av = s->av; \
const int h = s->height[1]; \
const int w = s->width[1]; \
const int slice_start = (h * jobnr) / nb_jobs; \
const int slice_end = (h * (jobnr+1)) / nb_jobs; \
const type *sr = (const type *)in->data[2]; \
const type *sg = (const type *)in->data[0]; \
const type *sb = (const type *)in->data[1]; \
const type *sa = (const type *)in->data[3]; \
type *dr = (type *)out->data[2] + slice_start * rlinesize; \
type *dg = (type *)out->data[0] + slice_start * glinesize; \
type *db = (type *)out->data[1] + slice_start * blinesize; \
type *da = (type *)out->data[3] + slice_start * alinesize; \
\
for (int y = slice_start; y < slice_end; y++) { \
int ry = (y - rv) % h; \
int gy = (y - gv) % h; \
int by = (y - bv) % h; \
\
if (ry < 0) \
ry += h; \
if (gy < 0) \
gy += h; \
if (by < 0) \
by += h; \
\
for (int x = 0; x < w; x++) { \
int rx = (x - rh) % w; \
int gx = (x - gh) % w; \
int bx = (x - bh) % w; \
\
if (rx < 0) \
rx += w; \
if (gx < 0) \
gx += w; \
if (bx < 0) \
bx += w; \
dr[x] = sr[rx + ry * srlinesize]; \
dg[x] = sg[gx + gy * sglinesize]; \
db[x] = sb[bx + by * sblinesize]; \
} \
\
dr += rlinesize; \
dg += glinesize; \
db += blinesize; \
\
if (s->nb_planes < 4) \
continue; \
for (int x = 0; x < w; x++) { \
int ax = (x - ah) % w; \
int ay = (x - av) % h; \
\
if (ax < 0) \
ax += w; \
if (ay < 0) \
ay += h; \
da[x] = sa[ax + ay * salinesize]; \
} \
\
da += alinesize; \
} \
\
return 0; \
}

DEFINE_RGBAWRAP(8, uint8_t, 1)
DEFINE_RGBAWRAP(16, uint16_t, 2)

static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
@@ -181,10 +356,12 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
av_frame_copy_props(out, in);

s->in = in;
av_image_copy_plane(out->data[0] + out->linesize[0],
out->linesize[0],
in->data[0], in->linesize[0],
s->linesize[0], s->height[0]);
if (!s->is_rgbashift) {
av_image_copy_plane(out->data[0] + out->linesize[0],
out->linesize[0],
in->data[0], in->linesize[0],
s->linesize[0], s->height[0]);
}
ctx->internal->execute(ctx, s->filter_slice, out, NULL,
FFMIN3(s->height[1],
s->height[2],
@@ -200,11 +377,20 @@ static int config_input(AVFilterLink *inlink)
ChromaShiftContext *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);

s->is_rgbashift = !strcmp(ctx->filter->name, "rgbashift");
s->depth = desc->comp[0].depth;
if (s->edge)
s->filter_slice = s->depth > 8 ? wrap_slice16 : wrap_slice8;
else
s->filter_slice = s->depth > 8 ? smear_slice16 : smear_slice8;
s->nb_planes = desc->nb_components;
if (s->is_rgbashift) {
if (s->edge)
s->filter_slice = s->depth > 8 ? rgbawrap_slice16 : rgbawrap_slice8;
else
s->filter_slice = s->depth > 8 ? rgbasmear_slice16 : rgbasmear_slice8;
} else {
if (s->edge)
s->filter_slice = s->depth > 8 ? wrap_slice16 : wrap_slice8;
else
s->filter_slice = s->depth > 8 ? smear_slice16 : smear_slice8;
}
s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
s->height[0] = s->height[3] = inlink->h;
s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
@@ -257,3 +443,31 @@ AVFilter ff_vf_chromashift = {
.inputs = inputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
};

static const AVOption rgbashift_options[] = {
{ "rh", "shift red horizontally", OFFSET(rh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "rv", "shift red vertically", OFFSET(rv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "gh", "shift green horizontally", OFFSET(gh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "gv", "shift green vertically", OFFSET(gv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "bh", "shift blue horizontally", OFFSET(bh), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "bv", "shift blue vertically", OFFSET(bv), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "ah", "shift alpha horizontally", OFFSET(ah), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "av", "shift alpha vertically", OFFSET(av), AV_OPT_TYPE_INT, {.i64=0}, -255, 255, .flags = VF },
{ "edge", "set edge operation", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, .flags = VF, "edge" },
{ "smear", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, .flags = VF, "edge" },
{ "wrap", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, .flags = VF, "edge" },
{ NULL },
};

AVFILTER_DEFINE_CLASS(rgbashift);

AVFilter ff_vf_rgbashift = {
.name = "rgbashift",
.description = NULL_IF_CONFIG_SMALL("Shift RGBA."),
.priv_size = sizeof(ChromaShiftContext),
.priv_class = &rgbashift_class,
.query_formats = query_formats,
.outputs = outputs,
.inputs = inputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
};

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