[FFmpeg-cvslog] alacenc: Fix missing sign_extend()
Michael Niedermayer
git at videolan.org
Thu Jun 13 00:25:40 CEST 2013
ffmpeg | branch: release/0.10 | Michael Niedermayer <michaelni at gmx.at> | Thu Jun 13 00:01:13 2013 +0200| [4abc8e76cbbbceff30b871597f65056ef0091a2d] | committer: Carl Eugen Hoyos
alacenc: Fix missing sign_extend()
Fixes ticket #2497
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 8aea2f05dc56f7e7d60767dd27ba8e846a05e8ae)
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4abc8e76cbbbceff30b871597f65056ef0091a2d
---
libavcodec/alacenc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/alacenc.c b/libavcodec/alacenc.c
index e8d1bc0..5b57837 100644
--- a/libavcodec/alacenc.c
+++ b/libavcodec/alacenc.c
@@ -259,7 +259,7 @@ static void alac_linear_predictor(AlacEncodeContext *s, int ch)
// generate warm-up samples
residual[0] = samples[0];
for (i = 1; i <= lpc.lpc_order; i++)
- residual[i] = samples[i] - samples[i-1];
+ residual[i] = sign_extend(samples[i] - samples[i-1], s->write_sample_size);
// perform lpc on remaining samples
for (i = lpc.lpc_order + 1; i < s->avctx->frame_size; i++) {
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