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avcodec/lpc: copy levenson coeffs only when they have been computed

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Fixes: CID1473514 Uninitialized scalar variable

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c2d897f3566fdf5c190583c6f5197ead5abec2ed)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-05-11 20:50:44 +02:00
parent a0af91c348
commit 4f5ae895ce
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GPG Key ID: B18E8928B3948D64
1 changed files with 4 additions and 2 deletions
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libavcodec/lpc.c
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@ -243,8 +243,10 @@ int ff_lpc_calc_coefs(LPCContext *s,
double av_uninit(weight);
memset(var, 0, FFALIGN(MAX_LPC_ORDER+1,4)*sizeof(*var));
for(j=0; j<max_order; j++)
m[0].coeff[max_order-1][j] = -lpc[max_order-1][j];
/* Avoids initializing with an unused value when lpc_passes == 1 */
if (lpc_passes > 1)
for(j=0; j<max_order; j++)
m[0].coeff[max_order-1][j] = -lpc[max_order-1][j];
for(; pass<lpc_passes; pass++){
avpriv_init_lls(&m[pass&1], max_order);