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authorSiarhei Siamashka <siarhei.siamashka@gmail.com>2009-05-16 14:17:08 +0000
committerSiarhei Siamashka <siarhei.siamashka@gmail.com>2009-05-16 14:17:08 +0000
commit7d485f165f7f6313002da1fe67c2742f0fbb16c9 (patch)
tree87e68249904f3c5bc7dcfc05df2eea10fd318ea2 /libavcodec/ac3dec.c
parent3ac56e28b0a3fc84ccac9ac7e359f0f29567f8a0 (diff)
Support for getting (i)MDCT output multiplied by a constant scaling factor.
Scaling (i)MDCT output has no runtime overhead and can be used to improve performance of audio codecs. All the changes are only needed in 'ff_mdct_init' function and slow down initialization a bit. Originally committed as revision 18855 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ac3dec.c')
-rw-r--r--libavcodec/ac3dec.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index b3382bd120..7d9d0142df 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -194,8 +194,8 @@ static av_cold int ac3_decode_init(AVCodecContext *avctx)
ac3_common_init();
ac3_tables_init();
- ff_mdct_init(&s->imdct_256, 8, 1);
- ff_mdct_init(&s->imdct_512, 9, 1);
+ ff_mdct_init(&s->imdct_256, 8, 1, 1.0);
+ ff_mdct_init(&s->imdct_512, 9, 1, 1.0);
ff_kbd_window_init(s->window, 5.0, 256);
dsputil_init(&s->dsp, avctx);
av_lfg_init(&s->dith_state, 0);