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Code Issues Releases Activity

avfilter/vf_fillborders: add more fill modes

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This commit is contained in:
Paul B Mahol 2020-12-18 19:03:17 +01:00
parent 20b09b20a9
commit 90720da511
2 changed files with 146 additions and 2 deletions
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8
doc/filters.texi
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@ -11756,10 +11756,16 @@ It accepts the following values:
fill pixels using outermost pixels
@item mirror
fill pixels using mirroring
fill pixels using mirroring (half sample symmetric)
@item fixed
fill pixels with constant value
@item reflect
fill pixels using reflecting (whole sample symmetric)
@item wrap
fill pixels using wrapping
@end table
Default is @var{smear}.

140
libavfilter/vf_fillborders.c
View File

@ -18,6 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/avassert.h"
#include "libavutil/colorspace.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
@ -31,7 +32,7 @@
enum { Y, U, V, A };
enum { R, G, B };
enum FillMode { FM_SMEAR, FM_MIRROR, FM_FIXED, FM_NB_MODES };
enum FillMode { FM_SMEAR, FM_MIRROR, FM_FIXED, FM_REFLECT, FM_WRAP, FM_NB_MODES };
typedef struct Borders {
int left, right, top, bottom;
@ -269,6 +270,138 @@ static void fixed_borders16(FillBordersContext *s, AVFrame *frame)
}
}
static void reflect_borders8(FillBordersContext *s, AVFrame *frame)
{
int p, y, x;
for (p = 0; p < s->nb_planes; p++) {
uint8_t *ptr = frame->data[p];
int linesize = frame->linesize[p];
for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
for (x = 0; x < s->borders[p].left; x++) {
ptr[y * linesize + x] = ptr[y * linesize + s->borders[p].left * 2 - x];
}
for (x = 0; x < s->borders[p].right; x++) {
ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] =
ptr[y * linesize + s->planewidth[p] - s->borders[p].right - 2 - x];
}
}
for (y = 0; y < s->borders[p].top; y++) {
memcpy(ptr + y * linesize,
ptr + (s->borders[p].top * 2 - y) * linesize,
s->planewidth[p]);
}
for (y = 0; y < s->borders[p].bottom; y++) {
memcpy(ptr + (s->planeheight[p] - s->borders[p].bottom + y) * linesize,
ptr + (s->planeheight[p] - s->borders[p].bottom - 2 - y) * linesize,
s->planewidth[p]);
}
}
}
static void reflect_borders16(FillBordersContext *s, AVFrame *frame)
{
int p, y, x;
for (p = 0; p < s->nb_planes; p++) {
uint16_t *ptr = (uint16_t *)frame->data[p];
int linesize = frame->linesize[p] / 2;
for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
for (x = 0; x < s->borders[p].left; x++) {
ptr[y * linesize + x] = ptr[y * linesize + s->borders[p].left * 2 - x];
}
for (x = 0; x < s->borders[p].right; x++) {
ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] =
ptr[y * linesize + s->planewidth[p] - s->borders[p].right - 2 - x];
}
}
for (y = 0; y < s->borders[p].top; y++) {
memcpy(ptr + y * linesize,
ptr + (s->borders[p].top * 2 - y) * linesize,
s->planewidth[p] * 2);
}
for (y = 0; y < s->borders[p].bottom; y++) {
memcpy(ptr + (s->planeheight[p] - s->borders[p].bottom + y) * linesize,
ptr + (s->planeheight[p] - s->borders[p].bottom - 2 - y) * linesize,
s->planewidth[p] * 2);
}
}
}
static void wrap_borders8(FillBordersContext *s, AVFrame *frame)
{
int p, y, x;
for (p = 0; p < s->nb_planes; p++) {
uint8_t *ptr = frame->data[p];
int linesize = frame->linesize[p];
for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
for (x = 0; x < s->borders[p].left; x++) {
ptr[y * linesize + x] = ptr[y * linesize + s->planewidth[p] - s->borders[p].right - s->borders[p].left + x];
}
for (x = 0; x < s->borders[p].right; x++) {
ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] =
ptr[y * linesize + s->borders[p].left + x];
}
}
for (y = 0; y < s->borders[p].top; y++) {
memcpy(ptr + y * linesize,
ptr + (s->planeheight[p] - s->borders[p].bottom - s->borders[p].top + y) * linesize,
s->planewidth[p]);
}
for (y = 0; y < s->borders[p].bottom; y++) {
memcpy(ptr + (s->planeheight[p] - s->borders[p].bottom + y) * linesize,
ptr + (s->borders[p].top + y) * linesize,
s->planewidth[p]);
}
}
}
static void wrap_borders16(FillBordersContext *s, AVFrame *frame)
{
int p, y, x;
for (p = 0; p < s->nb_planes; p++) {
uint16_t *ptr = (uint16_t *)frame->data[p];
int linesize = frame->linesize[p] / 2;
for (y = s->borders[p].top; y < s->planeheight[p] - s->borders[p].bottom; y++) {
for (x = 0; x < s->borders[p].left; x++) {
ptr[y * linesize + x] = ptr[y * linesize + s->planewidth[p] - s->borders[p].right - s->borders[p].left + x];
}
for (x = 0; x < s->borders[p].right; x++) {
ptr[y * linesize + s->planewidth[p] - s->borders[p].right + x] =
ptr[y * linesize + s->borders[p].left + x];
}
}
for (y = 0; y < s->borders[p].top; y++) {
memcpy(ptr + y * linesize,
ptr + (s->planeheight[p] - s->borders[p].bottom - s->borders[p].top + y) * linesize,
s->planewidth[p] * 2);
}
for (y = 0; y < s->borders[p].bottom; y++) {
memcpy(ptr + (s->planeheight[p] - s->borders[p].bottom + y) * linesize,
ptr + (s->borders[p].top + y) * linesize,
s->planewidth[p] * 2);
}
}
}
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
FillBordersContext *s = inlink->dst->priv;
@ -325,6 +458,9 @@ static int config_input(AVFilterLink *inlink)
case FM_SMEAR: s->fillborders = s->depth <= 8 ? smear_borders8 : smear_borders16; break;
case FM_MIRROR: s->fillborders = s->depth <= 8 ? mirror_borders8 : mirror_borders16; break;
case FM_FIXED: s->fillborders = s->depth <= 8 ? fixed_borders8 : fixed_borders16; break;
case FM_REFLECT:s->fillborders = s->depth <= 8 ? reflect_borders8: reflect_borders16;break;
case FM_WRAP: s->fillborders = s->depth <= 8 ? wrap_borders8 : wrap_borders16; break;
default: av_assert0(0);
}
s->yuv_color[Y] = RGB_TO_Y_CCIR(s->rgba_color[R], s->rgba_color[G], s->rgba_color[B]);
@ -370,6 +506,8 @@ static const AVOption fillborders_options[] = {
{ "smear", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_SMEAR}, 0, 0, FLAGS, "mode" },
{ "mirror", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_MIRROR}, 0, 0, FLAGS, "mode" },
{ "fixed", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_FIXED}, 0, 0, FLAGS, "mode" },
{ "reflect",NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_REFLECT},0, 0, FLAGS, "mode" },
{ "wrap", NULL, 0, AV_OPT_TYPE_CONST, {.i64=FM_WRAP}, 0, 0, FLAGS, "mode" },
{ "color", "set the color for the fixed mode", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS },
{ NULL }
};