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avfilter/vf_xfade: add two more transitions

Paul B Mahol committed 4 years ago

Commit fc1ca181 parent f9785a72 files · +72 −0Browse files

Showing the changes to libavfilter (1 of 2 files). Show all

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libavfilter/vf_xfade.c+70−0
@@ -74,6 +74,8 @@ enum XFadeTransitions { · 73 unmodified lines
74 SQUEEZEH,74 SQUEEZEH,
75 SQUEEZEV,75 SQUEEZEV,
76 ZOOMIN,76 ZOOMIN,
77 FADEFAST,
78 FADESLOW,
77 NB_TRANSITIONS,79 NB_TRANSITIONS,
78};80};
79 81
@@ -193,6 +195,8 @@ static const AVOption xfade_options[] = { · 113 unmodified lines
193 { "squeezeh", "squeeze h transition", 0, AV_OPT_TYPE_CONST, {.i64=SQUEEZEH}, 0, 0, FLAGS, "transition" },195 { "squeezeh", "squeeze h transition", 0, AV_OPT_TYPE_CONST, {.i64=SQUEEZEH}, 0, 0, FLAGS, "transition" },
194 { "squeezev", "squeeze v transition", 0, AV_OPT_TYPE_CONST, {.i64=SQUEEZEV}, 0, 0, FLAGS, "transition" },196 { "squeezev", "squeeze v transition", 0, AV_OPT_TYPE_CONST, {.i64=SQUEEZEV}, 0, 0, FLAGS, "transition" },
195 { "zoomin", "zoom in transition", 0, AV_OPT_TYPE_CONST, {.i64=ZOOMIN}, 0, 0, FLAGS, "transition" },197 { "zoomin", "zoom in transition", 0, AV_OPT_TYPE_CONST, {.i64=ZOOMIN}, 0, 0, FLAGS, "transition" },
198 { "fadefast", "fast fade transition", 0, AV_OPT_TYPE_CONST, {.i64=FADEFAST}, 0, 0, FLAGS, "transition" },
199 { "fadeslow", "slow fade transition", 0, AV_OPT_TYPE_CONST, {.i64=FADESLOW}, 0, 0, FLAGS, "transition" },
196 { "duration", "set cross fade duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=1000000}, 0, 60000000, FLAGS },200 { "duration", "set cross fade duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=1000000}, 0, 60000000, FLAGS },
197 { "offset", "set cross fade start relative to first input stream", OFFSET(offset), AV_OPT_TYPE_DURATION, {.i64=0}, INT64_MIN, INT64_MAX, FLAGS },201 { "offset", "set cross fade start relative to first input stream", OFFSET(offset), AV_OPT_TYPE_DURATION, {.i64=0}, INT64_MIN, INT64_MAX, FLAGS },
198 { "expr", "set expression for custom transition", OFFSET(custom_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },202 { "expr", "set expression for custom transition", OFFSET(custom_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
@@ -1670,6 +1674,70 @@ static void zoomin##name##_transition(AVFilterContext *ctx, · 1471 unmodified lines
1670ZOOMIN_TRANSITION(8, uint8_t, 1)1674ZOOMIN_TRANSITION(8, uint8_t, 1)
1671ZOOMIN_TRANSITION(16, uint16_t, 2)1675ZOOMIN_TRANSITION(16, uint16_t, 2)
1672 1676
1677#define FADEFAST_TRANSITION(name, type, div) \
1678static void fadefast##name##_transition(AVFilterContext *ctx, \
1679 const AVFrame *a, const AVFrame *b, AVFrame *out, \
1680 float progress, \
1681 int slice_start, int slice_end, int jobnr) \
1682{ \
1683 XFadeContext *s = ctx->priv; \
1684 const int height = slice_end - slice_start; \
1685 const float imax = 1.f / s->max_value; \
1686 \
1687 for (int p = 0; p < s->nb_planes; p++) { \
1688 const type *xf0 = (const type *)(a->data[p] + slice_start * a->linesize[p]); \
1689 const type *xf1 = (const type *)(b->data[p] + slice_start * b->linesize[p]); \
1690 type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
1691 \
1692 for (int y = 0; y < height; y++) { \
1693 for (int x = 0; x < out->width; x++) { \
1694 dst[x] = mix(xf0[x], xf1[x], powf(progress, 1.f + \
1695 logf(1.f+FFABS(xf0[x]-xf1[x])*imax)\
1696 )); \
1697 } \
1698 \
1699 dst += out->linesize[p] / div; \
1700 xf0 += a->linesize[p] / div; \
1701 xf1 += b->linesize[p] / div; \
1702 } \
1703 } \
1704}
1705
1706FADEFAST_TRANSITION(8, uint8_t, 1)
1707FADEFAST_TRANSITION(16, uint16_t, 2)
1708
1709#define FADESLOW_TRANSITION(name, type, div) \
1710static void fadeslow##name##_transition(AVFilterContext *ctx, \
1711 const AVFrame *a, const AVFrame *b, AVFrame *out, \
1712 float progress, \
1713 int slice_start, int slice_end, int jobnr) \
1714{ \
1715 XFadeContext *s = ctx->priv; \
1716 const int height = slice_end - slice_start; \
1717 const float imax = 1.f / s->max_value; \
1718 \
1719 for (int p = 0; p < s->nb_planes; p++) { \
1720 const type *xf0 = (const type *)(a->data[p] + slice_start * a->linesize[p]); \
1721 const type *xf1 = (const type *)(b->data[p] + slice_start * b->linesize[p]); \
1722 type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
1723 \
1724 for (int y = 0; y < height; y++) { \
1725 for (int x = 0; x < out->width; x++) { \
1726 dst[x] = mix(xf0[x], xf1[x], powf(progress, 1.f + \
1727 logf(2.f-FFABS(xf0[x]-xf1[x])*imax)\
1728 )); \
1729 } \
1730 \
1731 dst += out->linesize[p] / div; \
1732 xf0 += a->linesize[p] / div; \
1733 xf1 += b->linesize[p] / div; \
1734 } \
1735 } \
1736}
1737
1738FADESLOW_TRANSITION(8, uint8_t, 1)
1739FADESLOW_TRANSITION(16, uint16_t, 2)
1740
1673static inline double getpix(void *priv, double x, double y, int plane, int nb)1741static inline double getpix(void *priv, double x, double y, int plane, int nb)
1674{1742{
1675 XFadeContext *s = priv;1743 XFadeContext *s = priv;
@@ -1816,6 +1884,8 @@ static int config_output(AVFilterLink *outlink) · 140 unmodified lines
1816 case SQUEEZEH: s->transitionf = s->depth <= 8 ? squeezeh8_transition : squeezeh16_transition; break;1884 case SQUEEZEH: s->transitionf = s->depth <= 8 ? squeezeh8_transition : squeezeh16_transition; break;
1817 case SQUEEZEV: s->transitionf = s->depth <= 8 ? squeezev8_transition : squeezev16_transition; break;1885 case SQUEEZEV: s->transitionf = s->depth <= 8 ? squeezev8_transition : squeezev16_transition; break;
1818 case ZOOMIN: s->transitionf = s->depth <= 8 ? zoomin8_transition : zoomin16_transition; break;1886 case ZOOMIN: s->transitionf = s->depth <= 8 ? zoomin8_transition : zoomin16_transition; break;
1887 case FADEFAST: s->transitionf = s->depth <= 8 ? fadefast8_transition : fadefast16_transition; break;
1888 case FADESLOW: s->transitionf = s->depth <= 8 ? fadeslow8_transition : fadeslow16_transition; break;
1819 default: return AVERROR_BUG;1889 default: return AVERROR_BUG;
1820 }1890 }
1821 1891

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