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avfilter/vf_overlay: Hoist calculations out of loop

Also use const where appropriate.

Andreas Rheinhardt committed 1 year ago

Commit 730ffc51 parent a4b34741 file · +14 −22Browse files

Unified · Split

libavfilter/vf_overlay.c+14−22
@@ -470,16 +470,13 @@ static av_always_inline void blend_plane_##depth##_##nbits##bits(AVFilterContext · 469 unmodified lines
470 int dst_hp = AV_CEIL_RSHIFT(dst_h, vsub); \470 int dst_hp = AV_CEIL_RSHIFT(dst_h, vsub); \
471 int yp = y>>vsub; \471 int yp = y>>vsub; \
472 int xp = x>>hsub; \472 int xp = x>>hsub; \
473 int jmax, j, k, kmax; \
474 int slice_start, slice_end; \
475 const T max = (1 << nbits) - 1; \473 const T max = (1 << nbits) - 1; \
476 const T mid = (1 << (nbits - 1)); \474 const T mid = (1 << (nbits - 1)); \
477 \475 \
478 j = FFMAX(-yp, 0); \476 const int jmin = FFMAX(-yp, 0), jmax = FFMIN3(-yp + dst_hp, FFMIN(src_hp, dst_hp), yp + src_hp); \
479 jmax = FFMIN3(-yp + dst_hp, FFMIN(src_hp, dst_hp), yp + src_hp); \477 const int kmin = FFMAX(-xp, 0), kmax = FFMIN(-xp + dst_wp, src_wp); \
480 \478 const int slice_start = jmin + (jmax * jobnr) / nb_jobs; \
481 slice_start = j + (jmax * jobnr) / nb_jobs; \479 const int slice_end = jmin + (jmax * (jobnr + 1)) / nb_jobs; \
482 slice_end = j + (jmax * (jobnr+1)) / nb_jobs; \
483 \480 \
484 const uint8_t *sp = src->data[i] + (slice_start) * src->linesize[i]; \481 const uint8_t *sp = src->data[i] + (slice_start) * src->linesize[i]; \
485 uint8_t *dp = dst->data[dst_plane] \482 uint8_t *dp = dst->data[dst_plane] \
@@ -488,13 +485,12 @@ static av_always_inline void blend_plane_##depth##_##nbits##bits(AVFilterContext · 2 unmodified lines
488 const uint8_t *ap = src->data[3] + (slice_start << vsub) * src->linesize[3]; \485 const uint8_t *ap = src->data[3] + (slice_start << vsub) * src->linesize[3]; \
489 const uint8_t *dap = main_has_alpha ? dst->data[3] + ((yp + slice_start) << vsub) * dst->linesize[3] : NULL; \486 const uint8_t *dap = main_has_alpha ? dst->data[3] + ((yp + slice_start) << vsub) * dst->linesize[3] : NULL; \
490 \487 \
491 for (j = slice_start; j < slice_end; j++) { \488 for (int j = slice_start; j < slice_end; ++j) { \
492 k = FFMAX(-xp, 0); \489 int k = kmin; \
493 const T *s = (const T *)sp + k; \490 const T *s = (const T *)sp + k; \
494 const T *a = (const T *)ap + (k << hsub); \491 const T *a = (const T *)ap + (k << hsub); \
495 const T *da = main_has_alpha ? (T *)dap + ((xp + k) << hsub) : NULL; \492 const T *da = main_has_alpha ? (T *)dap + ((xp + k) << hsub) : NULL; \
496 T *d = (T *)(dp + (xp + k) * dst_step); \493 T *d = (T *)(dp + (xp + k) * dst_step); \
497 kmax = FFMIN(-xp + dst_wp, src_wp); \
498 \494 \
499 if (nbits == 8 && ((vsub && j+1 < src_hp) || !vsub) && octx->blend_row[i]) { \495 if (nbits == 8 && ((vsub && j+1 < src_hp) || !vsub) && octx->blend_row[i]) { \
500 int c = octx->blend_row[i]((uint8_t*)d, (uint8_t*)da, (uint8_t*)s, \496 int c = octx->blend_row[i]((uint8_t*)d, (uint8_t*)da, (uint8_t*)s, \
@@ -585,25 +581,21 @@ static inline void alpha_composite_##depth##_##nbits##bits(const AVFrame *src, c · 84 unmodified lines
585 int jobnr, int nb_jobs) \581 int jobnr, int nb_jobs) \
586{ \582{ \
587 T alpha; /* the amount of overlay to blend on to main */ \583 T alpha; /* the amount of overlay to blend on to main */ \
588 int i, imax, j, jmax; \
589 int slice_start, slice_end; \
590 const T max = (1 << nbits) - 1; \584 const T max = (1 << nbits) - 1; \
591 \585 \
592 imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h); \586 const int imin = FFMAX(-y, 0), imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h); \
593 i = FFMAX(-y, 0); \587 const int jmin = FFMAX(-x, 0), jmax = FFMIN(-x + dst_w, src_w); \
594 \588 const int slice_start = imin + ( imax * jobnr) / nb_jobs; \
595 slice_start = i + (imax * jobnr) / nb_jobs; \589 const int slice_end = imin + ((imax * (jobnr + 1)) / nb_jobs); \
596 slice_end = i + ((imax * (jobnr+1)) / nb_jobs); \
597 \590 \
598 const uint8_t *sa = src->data[3] + (slice_start) * src->linesize[3]; \591 const uint8_t *sa = src->data[3] + (slice_start) * src->linesize[3]; \
599 uint8_t *da = dst->data[3] + (y + slice_start) * dst->linesize[3]; \592 uint8_t *da = dst->data[3] + (y + slice_start) * dst->linesize[3]; \
600 \593 \
601 for (i = slice_start; i < slice_end; i++) { \594 for (int i = slice_start; i < slice_end; ++i) { \
602 j = FFMAX(-x, 0); \595 const T *s = (const T *)sa + jmin; \
603 const T *s = (const T *)sa + j; \596 T *d = (T *)da + x + jmin; \
604 T *d = (T *)da + x + j; \
605 \597 \
606 for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) { \598 for (int j = jmin; j < jmax; ++j) { \
607 alpha = *s; \599 alpha = *s; \
608 if (alpha != 0 && alpha != max) { \600 if (alpha != 0 && alpha != max) { \
609 uint8_t alpha_d = *d; \601 uint8_t alpha_d = *d; \

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