Jean-Marc Valin
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5c3bc67959
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Fixed a bunch of fixed-point overflows on insanely hot signals by changing
the time-domain representation from Q14 to Q12 (Q29 to Q27 using the
standard convention).
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2008-08-28 23:34:24 -04:00 |
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Jean-Marc Valin
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558c50eb3d
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optimisation: Making it clear to the compiler that many of the loops in cwrs
need to iterate at least once.
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2008-04-16 14:15:07 +10:00 |
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Jean-Marc Valin
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d568303134
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optimisation: simplified the "full gain" case of alg_quant() to remove some
32-bit muls.
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2008-04-15 18:04:33 +10:00 |
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Jean-Marc Valin
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98c86c7885
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Trying to clean up celt_ilog2() vs. EC_ILOG a bit.
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2008-03-27 08:40:45 +11:00 |
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Jean-Marc Valin
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189acec5d3
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optimisation: defined a reciprocal square root (celt_rsqrt) for use in
find_spectral_pitch instead of using celt_rcp(celt_sqrt(x))
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2008-03-26 16:42:42 +11:00 |
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Jean-Marc Valin
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ac72c2821a
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oops. find_max32() now uses VERY_LARGE32 (instead of VERY_LARGE16)
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2008-03-25 21:31:12 +11:00 |
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Jean-Marc Valin
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44c63350d1
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optimisations: Another bunch of simplifications to alg_quant(), mainly to
remove unnecessary copying and some conditional branches.
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2008-03-25 21:28:40 +11:00 |
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Jean-Marc Valin
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49134381d0
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optimisations: caching sign of x in alg_quant(), changed celt_div()/celt_rcp()
to assume denominator is positive.
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2008-03-25 16:07:05 +11:00 |
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Jean-Marc Valin
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17ad401c2c
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defined find_max16 and overrode it for C55x
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2008-03-23 08:06:29 +11:00 |
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Jean-Marc Valin
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dc767f67f9
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No longer trying to save bits when encoding integers near the upper limit
(and fix for celt_div with 16-bit numerator on a 16-bit CPU)
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2008-03-22 22:23:58 +11:00 |
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Jean-Marc Valin
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2282383434
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fixed-point: added cheap celt_div() division using a reciprocal
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2008-03-22 21:17:45 +11:00 |
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Jean-Marc Valin
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9901cb9e82
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fixed-point: defined celt_maxabs16() as basic operator
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2008-03-21 11:13:51 +11:00 |
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Jean-Marc Valin
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83006eec60
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fixed-point: using TI intrinsic for celt_ilog2() if available.
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2008-03-21 10:40:43 +11:00 |
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Jean-Marc Valin
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4ff068e670
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Some work on assertions.
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2008-03-15 23:34:39 +11:00 |
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Jean-Marc Valin
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15b9be3a29
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fixed-point: playing it safe. SHL32() now automatically casts input to 32-bit
to prevent surprises. Also, a few comments.
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2008-03-14 17:58:33 +11:00 |
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Jean-Marc Valin
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19ae9fc944
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fixed-point: simplifying the arithmetic in alg_quant()
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2008-03-13 11:18:15 +11:00 |
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Jean-Marc Valin
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3ec78b173b
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More accurate sqrt approximation using MULT16_16_Q15() instead of Q14.
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2008-03-12 23:00:42 +11:00 |
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Jean-Marc Valin
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887ad9ff29
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Increased accuracy of the reciprocal approximation and made it use
MULT16_16_Q15() instead of Q14 (should be faster).
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2008-03-12 21:34:50 +11:00 |
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Jean-Marc Valin
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931db72e75
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Defined the celt_rcp() reciprocal approximation
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2008-03-12 11:28:26 +11:00 |
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Jean-Marc Valin
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68b02b1025
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fixed-point: copied the exp2 implementation from Speex, using it for dB2Amp()
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2008-02-28 23:37:26 +11:00 |
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Jean-Marc Valin
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2eaba8ac1f
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fixed-point: log approximation
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2008-02-28 22:14:54 +11:00 |
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Jean-Marc Valin
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3ca9b1d295
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fixed-point: Moved sqrt and cos approximations to mathops.h
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2008-02-27 23:50:31 +11:00 |
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