[FFmpeg-cvslog] aacenc: allocate a larger buffer for the TNS LPC context

[Rostislav Pehlivanov]

ffmpeg | branch: master | Rostislav Pehlivanov <atomnuker at gmail.com> | Tue Sep  1 06:40:12 2015 +0100| [d09f9c45c7554e6d9b20be5b640f67fcf053250b] | committer: Rostislav Pehlivanov

aacenc: allocate a larger buffer for the TNS LPC context

Turns out autocorrelating more than 750 coefficients at once
will cause a segfault, despite there being enough space to
hold an entire frame of samples into the buffer.

Signed-off-by: Rostislav Pehlivanov <atomnuker at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d09f9c45c7554e6d9b20be5b640f67fcf053250b
---

 libavcodec/aacenc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index 62dba34..232eeda 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -825,7 +825,7 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
         goto fail;
     s->psypp = ff_psy_preprocess_init(avctx);
     s->coder = &ff_aac_coders[s->options.aac_coder];
-    ff_lpc_init(&s->lpc, avctx->frame_size, MAX_LPC_ORDER, FF_LPC_TYPE_LEVINSON);
+    ff_lpc_init(&s->lpc, 2*avctx->frame_size, TNS_MAX_ORDER, FF_LPC_TYPE_LEVINSON);
 
     if (HAVE_MIPSDSPR1)
         ff_aac_coder_init_mips(s);