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2011-01-09Add stereo rematrixing support to the AC-3 encoders.Justin Ruggles
This improves the audio quality significantly for stereo source with both the fixed-point and floating-point AC-3 encoders. Update acodec-ac3_fixed and seek-ac3_rm test references. Originally committed as revision 26271 to svn://svn.ffmpeg.org/ffmpeg/trunk
2011-01-05Convert floating-point MDCT coefficients to 24-bit fixed-point all at onceJustin Ruggles
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
2011-01-03Move fixed-point parts of the AC-3 encoder to separate files.Justin Ruggles
Originally committed as revision 26206 to svn://svn.ffmpeg.org/ffmpeg/trunk