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3 Commits

Author SHA1 Message Date
Justin Ruggles
eddf8f4100 ac3enc: use dsputil functions in apply_window() 
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 3b924294ea0ab891cf28fb30f26962a7960f7f37)
 2011-01-23 19:32:08 +01:00
Justin Ruggles
ac05f9030e Convert floating-point MDCT coefficients to 24-bit fixed-point all at once 
instead of doing it separately in 2 different functions.
This makes float AC-3 encoding approx. 3-7% faster overall.
Also, the coefficient conversion can now be easily SIMD-optimized.

Originally committed as revision 26232 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2011-01-05 20:35:36 +00:00
Justin Ruggles
6fd96d1a85 Change the AC-3 encoder to use floating-point. 
Fixed-point AC-3 encoder renamed to ac3_fixed.
Regression test acodec-ac3 renamed to acodec-ac3_fixed.
Regression test lavf-rm changed to use ac3_fixed encoder.

Originally committed as revision 26209 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2011-01-04 11:53:44 +00:00