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avfilter/signature_lookup: Avoid branch when adding to linked list 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-02-14 01:04:47 +01:00
parent 626a076249
commit cc36a9f5b9
1 changed files with 5 additions and 11 deletions
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16
libavfilter/signature_lookup.c
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@ -187,7 +187,7 @@ static MatchingInfo* get_matching_parameters(AVFilterContext *ctx, SignatureCont
size_t i, j, k, l, hmax = 0, score;
int framerate, offset, l1dist;
double m;
MatchingInfo *cands = NULL, *c = NULL;
MatchingInfo cands = { 0 }, *c = &cands;
struct {
uint8_t size;
@ -295,16 +295,10 @@ static MatchingInfo* get_matching_parameters(AVFilterContext *ctx, SignatureCont
for (i = 0; i < MAX_FRAMERATE; i++) {
for (j = 0; j < HOUGH_MAX_OFFSET; j++) {
if (hmax < hspace[i][j].score) {
if (c == NULL) {
c = av_malloc(sizeof(MatchingInfo));
cands = c;
} else {
c->next = av_malloc(sizeof(MatchingInfo));
c = c->next;
}
c->next = av_malloc(sizeof(MatchingInfo));
c = c->next;
if (!c) {
sll_free(&cands);
sll_free(&cands.next);
goto error;
}
c->framerateratio = (i+1.0) / 30;
@ -325,7 +319,7 @@ static MatchingInfo* get_matching_parameters(AVFilterContext *ctx, SignatureCont
error:
av_freep(&hspace);
av_free(hspaces);
return cands;
return cands.next;
}
static int iterate_frame(double frr, FineSignature **a, FineSignature **b, int fcount, int *bcount, int dir)