RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

ra144enc: zero the reflection coeffs if the filter is unstable 

fixes use of uninitialized values if the filter is still unstable after using
the previous frame lpc coefficients.
This commit is contained in:
Justin Ruggles 2011-12-21 16:09:11 -05:00
parent 131609dc2a
commit 9a3f10695a
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavcodec/ra144enc.c
View File

@ -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++) {