diff options
| -rw-r--r-- | libavcodec/alacenc.c | 5 |
1 files changed, 3 insertions, 2 deletions
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) { |