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Code Issues Releases Activity

avfilter/asrc_sinc: Don't allocate arrays separately

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Besides the obvious advantages this also fixes a potential memleak:
If only one of the arrays had been successfully allocated, the other
would leak. This also fixes Coverity issues #1440386 and #1440387.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Andreas Rheinhardt 2020-01-27 07:00:48 +01:00 committed by Michael Niedermayer
parent febd37f4bd
commit ab39f0d841
1 changed files with 4 additions and 6 deletions
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10
libavfilter/asrc_sinc.c
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@ -227,10 +227,11 @@ static int fir_to_phase(SincContext *s, float **h, int *len, int *post_len, floa
for (i = *len, work_len = 2 * 2 * 8; i > 1; work_len <<= 1, i >>= 1); for (i = *len, work_len = 2 * 2 * 8; i > 1; work_len <<= 1, i >>= 1);
work = av_calloc(work_len + 2, sizeof(*work)); /* +2: (UN)PACK */ /* The first part is for work (+2 for (UN)PACK), the latter for pi_wraps. */
pi_wraps = av_calloc(((work_len + 2) / 2), sizeof(*pi_wraps)); work = av_calloc((work_len + 2) + (work_len / 2 + 1), sizeof(float));
if (!work || !pi_wraps) if (!work)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
pi_wraps = &work[work_len + 2];
memcpy(work, *h, *len * sizeof(*work)); memcpy(work, *h, *len * sizeof(*work));
@ -240,7 +241,6 @@ static int fir_to_phase(SincContext *s, float **h, int *len, int *post_len, floa
s->rdft = av_rdft_init(av_log2(work_len), DFT_R2C); s->rdft = av_rdft_init(av_log2(work_len), DFT_R2C);
s->irdft = av_rdft_init(av_log2(work_len), IDFT_C2R); s->irdft = av_rdft_init(av_log2(work_len), IDFT_C2R);
if (!s->rdft || !s->irdft) { if (!s->rdft || !s->irdft) {
av_free(pi_wraps);
av_free(work); av_free(work);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
@ -323,7 +323,6 @@ static int fir_to_phase(SincContext *s, float **h, int *len, int *post_len, floa
*len = end - begin; *len = end - begin;
*h = av_realloc_f(*h, *len, sizeof(**h)); *h = av_realloc_f(*h, *len, sizeof(**h));
if (!*h) { if (!*h) {
av_free(pi_wraps);
av_free(work); av_free(work);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
@ -338,7 +337,6 @@ static int fir_to_phase(SincContext *s, float **h, int *len, int *post_len, floa
work_len, pi_wraps[work_len >> 1] / M_PI, peak, peak_imp_sum, imp_peak, work_len, pi_wraps[work_len >> 1] / M_PI, peak, peak_imp_sum, imp_peak,
work[imp_peak], *len, *post_len, 100.f - 100.f * *post_len / (*len - 1)); work[imp_peak], *len, *post_len, 100.f - 100.f * *post_len / (*len - 1));
av_free(pi_wraps);
av_free(work); av_free(work);
return 0; return 0;