Mans Rullgard
034b03e7a0
ac3: Do not read past the end of ff_ac3_band_start_tab.
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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Alex Converse <alex.converse@gmail.com>
2012-01-31 18:32:14 -08:00
Justin Ruggles
8b7b2d6aae
ac3dsp: simplify extract_exponents() now that it does not need to do clipping.
2011-07-01 13:02:11 -04:00
Justin Ruggles
dc0ad40de2
ac3dsp: fix loop condition in ac3_update_bap_counts_c()
2011-05-28 14:41:21 -04:00
Justin Ruggles
6ca23db9cc
ac3enc: modify mantissa bit counting to keep bap counts for all values of bap
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instead of just 0 to 4.
This does all the actual bit counting as a final step.
2011-05-28 12:39:28 -04:00
Justin Ruggles
63b1866ae1
ac3enc: clip large coefficient values and negative exponents rather than using
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av_assert2().
2011-05-01 13:32:04 -04:00
Mans Rullgard
2310ee4b1c
ac3enc: move extract_exponents inner loop to ac3dsp
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-04-04 18:27:22 +01:00
Mans Rullgard
52fd16a264
ac3enc: move compute_mantissa_size() to ac3dsp
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-30 01:21:56 +01:00
Mans Rullgard
6d9f52b2cd
ac3: move ff_ac3_bit_alloc_calc_bap to ac3dsp
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-29 19:31:45 +01:00
Mans Rullgard
f4855a904e
ac3enc: NEON optimised ac3_max_msb_abs_int16 and ac3_exponent_min
2011-03-24 16:30:49 +00:00
Mans Rullgard
2912e87a6c
Replace FFmpeg with Libav in licence headers
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
Justin Ruggles
0f999cfddb
ac3enc: add float_to_fixed24() with x86-optimized versions to AC3DSPContext
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and use in scale_coefficients() for the floating-point AC-3 encoder.
2011-03-17 16:46:48 -04:00
Justin Ruggles
f1efbca5e9
ac3enc: add SIMD-optimized shifting functions for use with the fixed-point AC3 encoder.
2011-03-14 08:45:31 -04:00
Justin Ruggles
fbb6b49dab
ac3enc: Add x86-optimized function to speed up log2_tab().
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AC3DSPContext.ac3_max_msb_abs_int16() finds the maximum MSB of the absolute
value of each element in an array of int16_t.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2011-02-13 16:49:39 -05:00
Justin Ruggles
dda3f0ef48
Add x86-optimized versions of exponent_min().
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2011-02-10 15:32:47 -05:00
