fixes use of uninitialized values if the filter is still unstable after using
the previous frame lpc coefficients.
---
libavcodec/ra144enc.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/libavcodec/ra144enc.c b/libavcodec/ra144enc.c
index 1d260b7..ee38bd5 100644
--- a/libavcodec/ra144enc.c
+++ b/libavcodec/ra144enc.c
@@ -477,7 +477,10 @@ static int ra144_encode_frame(AVCodecContext *avctx,
uint8_t *frame,
* The filter is unstable: use the coefficients of the previous frame.
*/
ff_int_to_int16(block_coefs[NBLOCKS - 1], ractx->lpc_coef[1]);
- ff_eval_refl(lpc_refl, block_coefs[NBLOCKS - 1], avctx);
+ if (ff_eval_refl(lpc_refl, block_coefs[NBLOCKS - 1], avctx)) {
+ /* the filter is still unstable. set reflection coeffs to zero. */
+ memset(lpc_refl, 0, sizeof(lpc_refl));
+ }
}
init_put_bits(&pb, frame, buf_size);
for (i = 0; i < LPC_ORDER; i++) {
--
1.7.1
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