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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/dsputil.h | |
| 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/dsputil.h')
| -rw-r--r-- | libavcodec/dsputil.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h index 9dc89409c4..f54d74d285 100644 --- a/libavcodec/dsputil.h +++ b/libavcodec/dsputil.h @@ -771,7 +771,7 @@ extern float ff_sine_2048[2048]; extern float ff_sine_4096[4096]; extern float *ff_sine_windows[6]; -int ff_mdct_init(MDCTContext *s, int nbits, int inverse); +int ff_mdct_init(MDCTContext *s, int nbits, int inverse, double scale); void ff_imdct_calc_c(MDCTContext *s, FFTSample *output, const FFTSample *input); void ff_imdct_half_c(MDCTContext *s, FFTSample *output, const FFTSample *input); void ff_imdct_calc_3dn(MDCTContext *s, FFTSample *output, const FFTSample *input); |