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Code Issues Releases Activity

avfilter/vf_xfade: add corner wipe transforms

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This commit is contained in:
Paul B Mahol
2020-08-27 13:49:14 +02:00
parent 71ec3e4583
commit 9ebde67f0b
2 changed files with 144 additions and 0 deletions
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4
doc/filters.texi
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@@ -20521,6 +20521,10 @@ Set one of available transition effects:
@item vdslice
@item hblur
@item fadegrays
@item wipetl
@item wipetr
@item wipebl
@item wipebr
@end table
Default transition effect is fade.

140
libavfilter/vf_xfade.c
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@@ -67,6 +67,10 @@ enum XFadeTransitions {
VDSLICE,
HBLUR,
FADEGRAYS,
WIPETL,
WIPETR,
WIPEBL,
WIPEBR,
NB_TRANSITIONS,
};
@@ -187,6 +191,10 @@ static const AVOption xfade_options[] = {
{ "vdslice", "vd slice transition", 0, AV_OPT_TYPE_CONST, {.i64=VDSLICE}, 0, 0, FLAGS, "transition" },
{ "hblur", "hblur transition", 0, AV_OPT_TYPE_CONST, {.i64=HBLUR}, 0, 0, FLAGS, "transition" },
{ "fadegrays", "fadegrays transition", 0, AV_OPT_TYPE_CONST, {.i64=FADEGRAYS}, 0, 0, FLAGS, "transition" },
{ "wipetl", "wipe tl transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPETL}, 0, 0, FLAGS, "transition" },
{ "wipetr", "wipe tr transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPETR}, 0, 0, FLAGS, "transition" },
{ "wipebl", "wipe bl transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPEBL}, 0, 0, FLAGS, "transition" },
{ "wipebr", "wipe br transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPEBR}, 0, 0, FLAGS, "transition" },
{ "duration", "set cross fade duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=1000000}, 0, 60000000, FLAGS },
{ "offset", "set cross fade start relative to first input stream", OFFSET(offset), AV_OPT_TYPE_DURATION, {.i64=0}, INT64_MIN, INT64_MAX, FLAGS },
{ "expr", "set expression for custom transition", OFFSET(custom_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
@@ -1416,6 +1424,134 @@ static void fadegrays##name##_transition(AVFilterContext *ctx,
FADEGRAYS_TRANSITION(8, uint8_t, 1)
FADEGRAYS_TRANSITION(16, uint16_t, 2)
#define WIPETL_TRANSITION(name, type, div) \
static void wipetl##name##_transition(AVFilterContext *ctx, \
const AVFrame *a, const AVFrame *b, AVFrame *out, \
float progress, \
int slice_start, int slice_end, int jobnr) \
{ \
XFadeContext *s = ctx->priv; \
const int height = slice_end - slice_start; \
const int zw = out->width * progress; \
const int zh = out->height * progress; \
\
for (int p = 0; p < s->nb_planes; p++) { \
const type *xf0 = (const type *)(a->data[p] + slice_start * a->linesize[p]); \
const type *xf1 = (const type *)(b->data[p] + slice_start * b->linesize[p]); \
type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
\
for (int y = 0; y < height; y++) { \
for (int x = 0; x < out->width; x++) { \
dst[x] = slice_start + y <= zh && \
x <= zw ? xf0[x] : xf1[x]; \
} \
\
dst += out->linesize[p] / div; \
xf0 += a->linesize[p] / div; \
xf1 += b->linesize[p] / div; \
} \
} \
}
WIPETL_TRANSITION(8, uint8_t, 1)
WIPETL_TRANSITION(16, uint16_t, 2)
#define WIPETR_TRANSITION(name, type, div) \
static void wipetr##name##_transition(AVFilterContext *ctx, \
const AVFrame *a, const AVFrame *b, AVFrame *out, \
float progress, \
int slice_start, int slice_end, int jobnr) \
{ \
XFadeContext *s = ctx->priv; \
const int height = slice_end - slice_start; \
const int zw = out->width * (1.f - progress); \
const int zh = out->height * progress; \
\
for (int p = 0; p < s->nb_planes; p++) { \
const type *xf0 = (const type *)(a->data[p] + slice_start * a->linesize[p]); \
const type *xf1 = (const type *)(b->data[p] + slice_start * b->linesize[p]); \
type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
\
for (int y = 0; y < height; y++) { \
for (int x = 0; x < out->width; x++) { \
dst[x] = slice_start + y <= zh && \
x > zw ? xf0[x] : xf1[x]; \
} \
\
dst += out->linesize[p] / div; \
xf0 += a->linesize[p] / div; \
xf1 += b->linesize[p] / div; \
} \
} \
}
WIPETR_TRANSITION(8, uint8_t, 1)
WIPETR_TRANSITION(16, uint16_t, 2)
#define WIPEBL_TRANSITION(name, type, div) \
static void wipebl##name##_transition(AVFilterContext *ctx, \
const AVFrame *a, const AVFrame *b, AVFrame *out, \
float progress, \
int slice_start, int slice_end, int jobnr) \
{ \
XFadeContext *s = ctx->priv; \
const int height = slice_end - slice_start; \
const int zw = out->width * progress; \
const int zh = out->height * (1.f - progress); \
\
for (int p = 0; p < s->nb_planes; p++) { \
const type *xf0 = (const type *)(a->data[p] + slice_start * a->linesize[p]); \
const type *xf1 = (const type *)(b->data[p] + slice_start * b->linesize[p]); \
type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
\
for (int y = 0; y < height; y++) { \
for (int x = 0; x < out->width; x++) { \
dst[x] = slice_start + y > zh && \
x <= zw ? xf0[x] : xf1[x]; \
} \
\
dst += out->linesize[p] / div; \
xf0 += a->linesize[p] / div; \
xf1 += b->linesize[p] / div; \
} \
} \
}
WIPEBL_TRANSITION(8, uint8_t, 1)
WIPEBL_TRANSITION(16, uint16_t, 2)
#define WIPEBR_TRANSITION(name, type, div) \
static void wipebr##name##_transition(AVFilterContext *ctx, \
const AVFrame *a, const AVFrame *b, AVFrame *out, \
float progress, \
int slice_start, int slice_end, int jobnr) \
{ \
XFadeContext *s = ctx->priv; \
const int height = slice_end - slice_start; \
const int zh = out->height * (1.f - progress); \
const int zw = out->width * (1.f - progress); \
\
for (int p = 0; p < s->nb_planes; p++) { \
const type *xf0 = (const type *)(a->data[p] + slice_start * a->linesize[p]); \
const type *xf1 = (const type *)(b->data[p] + slice_start * b->linesize[p]); \
type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
\
for (int y = 0; y < height; y++) { \
for (int x = 0; x < out->width; x++) { \
dst[x] = slice_start + y > zh && \
x > zw ? xf0[x] : xf1[x]; \
} \
\
dst += out->linesize[p] / div; \
xf0 += a->linesize[p] / div; \
xf1 += b->linesize[p] / div; \
} \
} \
}
WIPEBR_TRANSITION(8, uint8_t, 1)
WIPEBR_TRANSITION(16, uint16_t, 2)
static inline double getpix(void *priv, double x, double y, int plane, int nb)
{
XFadeContext *s = priv;
@@ -1559,6 +1695,10 @@ static int config_output(AVFilterLink *outlink)
case VDSLICE: s->transitionf = s->depth <= 8 ? vdslice8_transition : vdslice16_transition; break;
case HBLUR: s->transitionf = s->depth <= 8 ? hblur8_transition : hblur16_transition; break;
case FADEGRAYS: s->transitionf = s->depth <= 8 ? fadegrays8_transition : fadegrays16_transition; break;
case WIPETL: s->transitionf = s->depth <= 8 ? wipetl8_transition : wipetl16_transition; break;
case WIPETR: s->transitionf = s->depth <= 8 ? wipetr8_transition : wipetr16_transition; break;
case WIPEBL: s->transitionf = s->depth <= 8 ? wipebl8_transition : wipebl16_transition; break;
case WIPEBR: s->transitionf = s->depth <= 8 ? wipebr8_transition : wipebr16_transition; break;
}
if (s->transition == CUSTOM) {