Replace pow(x, 0.75) with sqrtf(x * sqrtf(x)) for a 33% speedup.

[ffmpeg] / libavcodec / mpegaudioenc.c

diff --git a/libavcodec/mpegaudioenc.c b/libavcodec/mpegaudioenc.c
index 50a7b351208402c4712ae02113a457ff9626bf2d..de3081e2bf584371d50d7813113060a44807103e 100644 (file)
--- a/libavcodec/mpegaudioenc.c
+++ b/libavcodec/mpegaudioenc.c
@@ -781,7 +781,7 @@ static int MPA_encode_frame(AVCodecContext *avctx,
     encode_frame(s, bit_alloc, padding);
 
     s->nb_samples += MPA_FRAME_SIZE;
-    return pbBufPtr(&s->pb) - s->pb.buf;
+    return put_bits_ptr(&s->pb) - s->pb.buf;
 }
 
 static av_cold int MPA_encode_close(AVCodecContext *avctx)