[FFmpeg-cvslog] ac3enc: do not clip coefficients after transforms

[Lynne]

ffmpeg | branch: master | Lynne <dev at lynne.ee> | Sat Jan  9 09:05:18 2021 +0100| [784c08af3005390cb1d74add13b58edf1663cd40] | committer: Lynne

ac3enc: do not clip coefficients after transforms

In either encoder, its impossible for the coefficients to go past 25 bits
right after the MDCT. Our MDCT is numerically stable.
For the floating point encoder, in case a NaN is contained, lrintf() will
raise a floating point exception during the conversion.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=784c08af3005390cb1d74add13b58edf1663cd40
---

 libavcodec/ac3enc_template.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/libavcodec/ac3enc_template.c b/libavcodec/ac3enc_template.c
index de6eba71d8..4f1e181e0b 100644
--- a/libavcodec/ac3enc_template.c
+++ b/libavcodec/ac3enc_template.c
@@ -383,9 +383,6 @@ int AC3_NAME(encode_frame)(AVCodecContext *avctx, AVPacket *avpkt,
 
     apply_mdct(s);
 
-    clip_coefficients(&s->adsp, s->blocks[0].mdct_coef[1],
-                      AC3_MAX_COEFS * s->num_blocks * s->channels);
-
     s->cpl_on = s->cpl_enabled;
     ff_ac3_compute_coupling_strategy(s);