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2015-09-27swresample/dither_template: Add missing license headerMichael Niedermayer
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2015-05-07swresample/dither_template: Do not define macro functions to nothingMichael Niedermayer
This avoids potential warnings Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-20swr: fix "may be used uninitialized in this function" warningsMichael Niedermayer
The uninitialized use implicates 0 channels, which is unlikely to reach this function but fixed anyway in this commit. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-12swr: work with 4 noise shaping coeffs at a timeMichael Niedermayer
63->38 kcycles Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-12swr: use a local variable for ns_coeffsMichael Niedermayer
maybe a very tiny bit faster Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-12swr: use local variable for ns_errorsMichael Niedermayer
71 -> 63 kcycles Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-12swr: minor simplification for the noise shaping pos updateMichael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-10swr: mark noise data for noise shaping as constMichael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-10swr: add seperate in/out pointers to the noise shaping codeMichael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-10swr: rename dither_pos to noise_posMichael Niedermayer
THis more closely matches what the field represents Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-10swr: reorder the operations in the noise shaping codeMichael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-09swr: move dither related fields to their own contextMichael Niedermayer
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-09swr: Implement Noise shaping ditherMichael Niedermayer
The following variants are implemented: lipshitz noise shaping dither shibata noise shaping dither low shibata noise shaping dither high shibata noise shaping dither f-weighted noise shaping dither modified-e-weighted noise shaping dither improved-e-weighted noise shaping dither Data tables taken from SOX Signed-off-by: Michael Niedermayer <michaelni@gmx.at>