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avfilter: add unpremultiply filter

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
pull/265/head
Paul B Mahol 7 years ago
parent 1193301758
commit c79e753471
6 changed files with 285 additions and 46 deletions
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  1. 1
      Changelog
  2. 19
      doc/filters.texi
  3. 1
      libavfilter/Makefile
  4. 1
      libavfilter/allfilters.c
  5. 2
      libavfilter/version.h
  6. 247
      libavfilter/vf_premultiply.c

1
Changelog
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@ -29,6 +29,7 @@ version <next>:
- limiter video filter
- libvmaf video filter
- Dolby E decoder and SMPTE 337M demuxer
- unpremultiply video filter
version 3.3:
- CrystalHD decoder moved to new decode API

19
doc/filters.texi
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@ -14532,6 +14532,25 @@ ffmpeg -i INPUT -vf trim=duration=1
@end itemize
@section unpremultiply
Apply alpha unpremultiply effect to input video stream using first plane
of second stream as alpha.
Both streams must have same dimensions and same pixel format.
The filter accepts the following option:
@table @option
@item planes
Set which planes will be processed, unprocessed planes will be copied.
By default value 0xf, all planes will be processed.
If the format has 1 or 2 components, then luma is bit 0.
If the format has 3 or 4 components:
for RGB formats bit 0 is green, bit 1 is blue and bit 2 is red;
for YUV formats bit 0 is luma, bit 1 is chroma-U and bit 2 is chroma-V.
If present, the alpha channel is always the last bit.
@end table
@anchor{unsharp}
@section unsharp

1
libavfilter/Makefile
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@ -314,6 +314,7 @@ OBJS-$(CONFIG_TILE_FILTER) += vf_tile.o
OBJS-$(CONFIG_TINTERLACE_FILTER) += vf_tinterlace.o
OBJS-$(CONFIG_TRANSPOSE_FILTER) += vf_transpose.o
OBJS-$(CONFIG_TRIM_FILTER) += trim.o
OBJS-$(CONFIG_UNPREMULTIPLY_FILTER) += vf_premultiply.o framesync2.o
OBJS-$(CONFIG_UNSHARP_FILTER) += vf_unsharp.o
OBJS-$(CONFIG_USPP_FILTER) += vf_uspp.o
OBJS-$(CONFIG_VAGUEDENOISER_FILTER) += vf_vaguedenoiser.o

1
libavfilter/allfilters.c
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@ -325,6 +325,7 @@ static void register_all(void)
REGISTER_FILTER(TINTERLACE, tinterlace, vf);
REGISTER_FILTER(TRANSPOSE, transpose, vf);
REGISTER_FILTER(TRIM, trim, vf);
REGISTER_FILTER(UNPREMULTIPLY, unpremultiply, vf);
REGISTER_FILTER(UNSHARP, unsharp, vf);
REGISTER_FILTER(USPP, uspp, vf);
REGISTER_FILTER(VAGUEDENOISER, vaguedenoiser, vf);

2
libavfilter/version.h
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@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 6
#define LIBAVFILTER_VERSION_MINOR 95
#define LIBAVFILTER_VERSION_MINOR 96
#define LIBAVFILTER_VERSION_MICRO 100
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

247
libavfilter/vf_premultiply.c
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@ -33,7 +33,8 @@ typedef struct PreMultiplyContext {
int linesize[4];
int nb_planes;
int planes;
int half, depth, offset;
int inverse;
int half, depth, offset, max;
FFFrameSync fs;
void (*premultiply[4])(const uint8_t *msrc, const uint8_t *asrc,
@ -47,11 +48,12 @@ typedef struct PreMultiplyContext {
#define OFFSET(x) offsetof(PreMultiplyContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption premultiply_options[] = {
static const AVOption options[] = {
{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
{ NULL }
};
#define premultiply_options options
AVFILTER_DEFINE_CLASS(premultiply);
static int query_formats(AVFilterContext *ctx)
@ -199,6 +201,153 @@ static void premultiply16offset(const uint8_t *mmsrc, const uint8_t *aasrc,
}
}
static void unpremultiply8(const uint8_t *msrc, const uint8_t *asrc,
uint8_t *dst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int max, int offset)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
if (asrc[x] > 0 && asrc[x] < 255)
dst[x] = FFMIN(msrc[x] * 255 / asrc[x], 255);
else
dst[x] = msrc[x];
}
dst += dlinesize;
msrc += mlinesize;
asrc += alinesize;
}
}
static void unpremultiply8yuv(const uint8_t *msrc, const uint8_t *asrc,
uint8_t *dst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int max, int offset)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
if (asrc[x] > 0 && asrc[x] < 255)
dst[x] = FFMIN((msrc[x] - 128) * 255 / asrc[x] + 128, 255);
else
dst[x] = msrc[x];
}
dst += dlinesize;
msrc += mlinesize;
asrc += alinesize;
}
}
static void unpremultiply8offset(const uint8_t *msrc, const uint8_t *asrc,
uint8_t *dst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int max, int offset)
{
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
if (asrc[x] > 0 && asrc[x] < 255)
dst[x] = FFMIN((msrc[x] - offset) * 255 / asrc[x] + offset, 255);
else
dst[x] = msrc[x];
}
dst += dlinesize;
msrc += mlinesize;
asrc += alinesize;
}
}
static void unpremultiply16(const uint8_t *mmsrc, const uint8_t *aasrc,
uint8_t *ddst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int max, int offset)
{
const uint16_t *msrc = (const uint16_t *)mmsrc;
const uint16_t *asrc = (const uint16_t *)aasrc;
uint16_t *dst = (uint16_t *)ddst;
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
if (asrc[x] > 0 && asrc[x] < max)
dst[x] = FFMIN(msrc[x] * (unsigned)max / asrc[x], max);
else
dst[x] = msrc[x];
}
dst += dlinesize / 2;
msrc += mlinesize / 2;
asrc += alinesize / 2;
}
}
static void unpremultiply16yuv(const uint8_t *mmsrc, const uint8_t *aasrc,
uint8_t *ddst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int max, int offset)
{
const uint16_t *msrc = (const uint16_t *)mmsrc;
const uint16_t *asrc = (const uint16_t *)aasrc;
uint16_t *dst = (uint16_t *)ddst;
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
if (asrc[x] > 0 && asrc[x] < max)
dst[x] = FFMAX(FFMIN((msrc[x] - half) * max / asrc[x], half - 1), -half) + half;
else
dst[x] = msrc[x];
}
dst += dlinesize / 2;
msrc += mlinesize / 2;
asrc += alinesize / 2;
}
}
static void unpremultiply16offset(const uint8_t *mmsrc, const uint8_t *aasrc,
uint8_t *ddst,
ptrdiff_t mlinesize, ptrdiff_t alinesize,
ptrdiff_t dlinesize,
int w, int h,
int half, int max, int offset)
{
const uint16_t *msrc = (const uint16_t *)mmsrc;
const uint16_t *asrc = (const uint16_t *)aasrc;
uint16_t *dst = (uint16_t *)ddst;
int x, y;
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
if (asrc[x] > 0 && asrc[x] < max)
dst[x] = FFMAX(FFMIN((msrc[x] - offset) * (unsigned)max / asrc[x] + offset, max), 0);
else
dst[x] = msrc[x];
}
dst += dlinesize / 2;
msrc += mlinesize / 2;
asrc += alinesize / 2;
}
}
static int process_frame(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
@ -226,21 +375,55 @@ static int process_frame(FFFrameSync *fs)
full = base->color_range == AVCOL_RANGE_JPEG;
limited = base->color_range == AVCOL_RANGE_MPEG;
if (s->inverse) {
switch (outlink->format) {
case AV_PIX_FMT_YUV444P:
s->premultiply[0] = full ? unpremultiply8 : unpremultiply8offset;
s->premultiply[1] = s->premultiply[2] = unpremultiply8yuv;
break;
case AV_PIX_FMT_YUVJ444P:
s->premultiply[0] = unpremultiply8;
s->premultiply[1] = s->premultiply[2] = unpremultiply8yuv;
break;
case AV_PIX_FMT_GBRP:
s->premultiply[0] = s->premultiply[1] = s->premultiply[2] = limited ? unpremultiply8offset : unpremultiply8;
break;
case AV_PIX_FMT_YUV444P9:
case AV_PIX_FMT_YUV444P10:
case AV_PIX_FMT_YUV444P12:
case AV_PIX_FMT_YUV444P14:
case AV_PIX_FMT_YUV444P16:
s->premultiply[0] = full ? unpremultiply16 : unpremultiply16offset;
s->premultiply[1] = s->premultiply[2] = unpremultiply16yuv;
break;
case AV_PIX_FMT_GBRP9:
case AV_PIX_FMT_GBRP10:
case AV_PIX_FMT_GBRP12:
case AV_PIX_FMT_GBRP14:
case AV_PIX_FMT_GBRP16:
s->premultiply[0] = s->premultiply[1] = s->premultiply[2] = limited ? unpremultiply16offset : unpremultiply16;
break;
case AV_PIX_FMT_GRAY8:
s->premultiply[0] = limited ? unpremultiply8offset : unpremultiply8;
break;
case AV_PIX_FMT_GRAY10:
case AV_PIX_FMT_GRAY12:
case AV_PIX_FMT_GRAY16:
s->premultiply[0] = limited ? unpremultiply16offset : unpremultiply16;
break;
}
} else {
switch (outlink->format) {
case AV_PIX_FMT_YUV444P:
s->premultiply[0] = full ? premultiply8 : premultiply8offset;
s->premultiply[1] = premultiply8yuv;
s->premultiply[2] = premultiply8yuv;
s->premultiply[1] = s->premultiply[2] = premultiply8yuv;
break;
case AV_PIX_FMT_YUVJ444P:
s->premultiply[0] = premultiply8;
s->premultiply[1] = premultiply8yuv;
s->premultiply[2] = premultiply8yuv;
s->premultiply[1] = s->premultiply[2] = premultiply8yuv;
break;
case AV_PIX_FMT_GBRP:
s->premultiply[0] = limited ? premultiply8offset : premultiply8;
s->premultiply[1] = limited ? premultiply8offset : premultiply8;
s->premultiply[2] = limited ? premultiply8offset : premultiply8;
s->premultiply[0] = s->premultiply[1] = s->premultiply[2] = limited ? premultiply8offset : premultiply8;
break;
case AV_PIX_FMT_YUV444P9:
case AV_PIX_FMT_YUV444P10:
@ -248,17 +431,14 @@ static int process_frame(FFFrameSync *fs)
case AV_PIX_FMT_YUV444P14:
case AV_PIX_FMT_YUV444P16:
s->premultiply[0] = full ? premultiply16 : premultiply16offset;
s->premultiply[1] = premultiply16yuv;
s->premultiply[2] = premultiply16yuv;
s->premultiply[1] = s->premultiply[2] = premultiply16yuv;
break;
case AV_PIX_FMT_GBRP9:
case AV_PIX_FMT_GBRP10:
case AV_PIX_FMT_GBRP12:
case AV_PIX_FMT_GBRP14:
case AV_PIX_FMT_GBRP16:
s->premultiply[0] = limited ? premultiply16offset : premultiply16;
s->premultiply[1] = limited ? premultiply16offset : premultiply16;
s->premultiply[2] = limited ? premultiply16offset : premultiply16;
s->premultiply[0] = s->premultiply[1] = s->premultiply[2] = limited ? premultiply16offset : premultiply16;
break;
case AV_PIX_FMT_GRAY8:
s->premultiply[0] = limited ? premultiply8offset : premultiply8;
@ -269,6 +449,7 @@ static int process_frame(FFFrameSync *fs)
s->premultiply[0] = limited ? premultiply16offset : premultiply16;
break;
}
}
for (p = 0; p < s->nb_planes; p++) {
if (!((1 << p) & s->planes)) {
@ -282,7 +463,7 @@ static int process_frame(FFFrameSync *fs)
base->linesize[p], alpha->linesize[0],
out->linesize[p],
s->width[p], s->height[p],
s->half, s->depth, s->offset);
s->half, s->inverse ? s->max : s->depth, s->offset);
}
}
out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base);
@ -310,6 +491,7 @@ static int config_input(AVFilterLink *inlink)
s->width[0] = s->width[3] = inlink->w;
s->depth = desc->comp[0].depth;
s->max = (1 << s->depth) - 1;
s->half = (1 << s->depth) / 2;
s->offset = 16 << (s->depth - 8);
@ -369,6 +551,16 @@ static int activate(AVFilterContext *ctx)
return ff_framesync2_activate(&s->fs);
}
static av_cold int init(AVFilterContext *ctx)
{
PreMultiplyContext *s = ctx->priv;
if (!strcmp(ctx->filter->name, "unpremultiply"))
s->inverse = 1;
return 0;
}
static av_cold void uninit(AVFilterContext *ctx)
{
PreMultiplyContext *s = ctx->priv;
@ -398,6 +590,8 @@ static const AVFilterPad premultiply_outputs[] = {
{ NULL }
};
#if CONFIG_PREMULTIPLY_FILTER
AVFilter ff_vf_premultiply = {
.name = "premultiply",
.description = NULL_IF_CONFIG_SMALL("PreMultiply first stream with first plane of second stream."),
@ -410,3 +604,26 @@ AVFilter ff_vf_premultiply = {
.priv_class = &premultiply_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};
#endif /* CONFIG_PREMULTIPLY_FILTER */
#if CONFIG_UNPREMULTIPLY_FILTER
#define unpremultiply_options options
AVFILTER_DEFINE_CLASS(unpremultiply);
AVFilter ff_vf_unpremultiply = {
.name = "unpremultiply",
.description = NULL_IF_CONFIG_SMALL("UnPreMultiply first stream with first plane of second stream."),
.priv_size = sizeof(PreMultiplyContext),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.activate = activate,
.inputs = premultiply_inputs,
.outputs = premultiply_outputs,
.priv_class = &unpremultiply_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};
#endif /* CONFIG_UNPREMULTIPLY_FILTER */

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