From 4f46099b9054f5a1cb7f1609a267f6e0e286cfd1 Mon Sep 17 00:00:00 2001 From: Benoit Fouet Date: Tue, 3 Mar 2009 13:11:10 +0000 Subject: Use sign_extend(). On behalf of Jai. Originally committed as revision 17759 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/alacenc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'libavcodec/alacenc.c') diff --git a/libavcodec/alacenc.c b/libavcodec/alacenc.c index 9fd5064514..886b6c68ba 100644 --- a/libavcodec/alacenc.c +++ b/libavcodec/alacenc.c @@ -23,6 +23,7 @@ #include "bitstream.h" #include "dsputil.h" #include "lpc.h" +#include "mathops.h" #define DEFAULT_FRAME_SIZE 4096 #define DEFAULT_SAMPLE_SIZE 16 @@ -253,8 +254,8 @@ static void alac_linear_predictor(AlacEncodeContext *s, int ch) sum >>= lpc.lpc_quant; sum += samples[0]; - residual[i] = (samples[lpc.lpc_order+1] - sum) << (32 - s->write_sample_size) >> - (32 - s->write_sample_size); + residual[i] = sign_extend(samples[lpc.lpc_order+1] - sum, + s->write_sample_size); res_val = residual[i]; if(res_val) { -- cgit v1.2.3