Do not invert samples when encoding Vorbis.

Patch by Frank Barchard, fbarchard google Originally committed as revision 23329 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago · 344f5c9fb3
parent f4348e6cce
commit 344f5c9fb3
1 changed files with 2 additions and 2 deletions
--- a/libavcodec/vorbis_enc.c
+++ b/libavcodec/vorbis_enc.c
@ -915,7 +915,7 @@ static int apply_window_and_mdct(vorbis_enc_context *venc, signed short *audio,
            float * offset = venc->samples + channel*window_len*2 + window_len;
            j = channel;
            for (i = 0; i < samples; i++, j += venc->channels)
-                offset[i] = -audio[j] / 32768. / n * win[window_len - i - 1]; //FIXME find out why the sign has to be fliped
+                offset[i] = audio[j] / 32768. / n * win[window_len - i - 1];
        }
    } else {
        for (channel = 0; channel < venc->channels; channel++)
@ -932,7 +932,7 @@ static int apply_window_and_mdct(vorbis_enc_context *venc, signed short *audio,
            float *offset = venc->saved + channel * window_len;
            j = channel;
            for (i = 0; i < samples; i++, j += venc->channels)
-                offset[i] = -audio[j] / 32768. / n * win[i]; //FIXME find out why the sign has to be fliped
+                offset[i] = audio[j] / 32768. / n * win[i];
        }
        venc->have_saved = 1;
    } else {