From e22dd7fbd09d9384a08b11bafe3d1bbe0a89bf8b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 13 Jun 2013 00:01:13 +0200 Subject: [PATCH] alacenc: Fix missing sign_extend() Fixes ticket #2497 Signed-off-by: Michael Niedermayer (cherry picked from commit 8aea2f05dc56f7e7d60767dd27ba8e846a05e8ae) --- libavcodec/alacenc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/alacenc.c b/libavcodec/alacenc.c index 4ee558c673..83063ab0f7 100644 --- a/libavcodec/alacenc.c +++ b/libavcodec/alacenc.c @@ -274,7 +274,7 @@ 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->frame_size; i++) {