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| author | Michael Niedermayer <michael@niedermayer.cc> | 2024-05-11 20:50:44 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-05-13 03:40:16 +0200 |
| commit | c2d897f3566fdf5c190583c6f5197ead5abec2ed (patch) | |
| tree | 1162514c93930bb07f2a324003560bd8e4954335 | |
| parent | c304784a86cc7e2af211ed80ce2121e788680a8e (diff) | |
| download | ffmpeg-c2d897f3566fdf5c190583c6f5197ead5abec2ed.tar.gz | |
avcodec/lpc: copy levenson coeffs only when they have been computed
Fixes: CID1473514 Uninitialized scalar variable
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/lpc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/lpc.c b/libavcodec/lpc.c index 8305cc0596..dfd6114690 100644 --- a/libavcodec/lpc.c +++ b/libavcodec/lpc.c @@ -282,8 +282,10 @@ 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); |