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| author | Siarhei Siamashka <siarhei.siamashka@gmail.com> | 2009-05-16 14:17:08 +0000 |
|---|---|---|
| committer | Siarhei Siamashka <siarhei.siamashka@gmail.com> | 2009-05-16 14:17:08 +0000 |
| commit | 7d485f165f7f6313002da1fe67c2742f0fbb16c9 (patch) | |
| tree | 87e68249904f3c5bc7dcfc05df2eea10fd318ea2 /libavcodec/ac3dec.c | |
| parent | 3ac56e28b0a3fc84ccac9ac7e359f0f29567f8a0 (diff) | |
| download | ffmpeg-7d485f165f7f6313002da1fe67c2742f0fbb16c9.tar.gz | |
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.c | 4 |
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); |