diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2011-07-21 16:27:55 +0200 |
---|---|---|
committer | Michael Niedermayer <michaelni@gmx.at> | 2011-07-21 16:28:53 +0200 |
commit | f93f6963babf08a7bcf85b9a57f37266dc0a4ae0 (patch) | |
tree | d9729ad7db8cb9f9a6a5483ac960ef7a56310072 /libavcodec/celp_math.c | |
parent | 8c2863b87f651bfce061d5b0e03cd756b049a553 (diff) | |
parent | e5985185d2eda942333ebbb72bd7d043ffe40be7 (diff) | |
download | ffmpeg-f93f6963babf08a7bcf85b9a57f37266dc0a4ae0.tar.gz |
Merge remote-tracking branch 'qatar/master'
* qatar/master:
rv30: return AVERROR(EINVAL) instead of EINVAL
build: add -L flags before existing LDFLAGS
simple_idct: whitespace cosmetics
simple_idct: make repeated code a macro
dsputil: remove huge #if 0 block
simple_idct: change 10-bit add/put stride from pixels to bytes
dsputil: allow 9/10-bit functions for non-h264 codecs
dnxhd: rename some data tables
dnxhdenc: remove inline from function only called through pointer
dnxhdenc: whitespace cosmetics
swscale: mark YUV422P10(LE,BE) as supported for output
configure: add -xc99 to LDFLAGS for Sun CC
Remove unused and non-compiling vestigial g729 decoder
Remove unused code under G729_BITEXACT #ifdef.
mpegvideo: fix invalid picture unreferencing.
dsputil: Remove extra blank line at end.
dsputil: Replace a LONG_MAX check with HAVE_FAST_64BIT.
simple_idct: add 10-bit version
Conflicts:
Makefile
libavcodec/g729data.h
libavcodec/g729dec.c
libavcodec/rv30.c
tests/ref/lavfi/pixdesc
tests/ref/lavfi/pixfmts_copy
tests/ref/lavfi/pixfmts_null
tests/ref/lavfi/pixfmts_scale
tests/ref/lavfi/pixfmts_vflip
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/celp_math.c')
-rw-r--r-- | libavcodec/celp_math.c | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/libavcodec/celp_math.c b/libavcodec/celp_math.c index 09111da819..de33109b44 100644 --- a/libavcodec/celp_math.c +++ b/libavcodec/celp_math.c @@ -27,82 +27,6 @@ #include "avcodec.h" #include "celp_math.h" -#ifdef G729_BITEXACT -/** - * Cosine table: base_cos[i] = (1<<15) * cos(i*PI/64) - */ -static const int16_t base_cos[64] = -{ - 32767, 32729, 32610, 32413, 32138, 31786, 31357, 30853, - 30274, 29622, 28899, 28106, 27246, 26320, 25330, 24279, - 23170, 22006, 20788, 19520, 18205, 16846, 15447, 14010, - 12540, 11039, 9512, 7962, 6393, 4808, 3212, 1608, - 0, -1608, -3212, -4808, -6393, -7962, -9512, -11039, - -12540, -14010, -15447, -16846, -18205, -19520, -20788, -22006, - -23170, -24279, -25330, -26320, -27246, -28106, -28899, -29622, - -30274, -30853, -31357, -31786, -32138, -32413, -32610, -32729 -}; - -/** - * Slope used to compute cos(x) - * - * cos(ind*64+offset) = base_cos[ind]+offset*slope_cos[ind] - * values multiplied by 1<<19 - */ -static const int16_t slope_cos[64] = -{ - -632, -1893, -3150, -4399, -5638, -6863, -8072, -9261, - -10428, -11570, -12684, -13767, -14817, -15832, -16808, -17744, - -18637, -19486, -20287, -21039, -21741, -22390, -22986, -23526, - -24009, -24435, -24801, -25108, -25354, -25540, -25664, -25726, - -25726, -25664, -25540, -25354, -25108, -24801, -24435, -24009, - -23526, -22986, -22390, -21741, -21039, -20287, -19486, -18637, - -17744, -16808, -15832, -14817, -13767, -12684, -11570, -10428, - -9261, -8072, -6863, -5638, -4399, -3150, -1893, -632 -}; - -/** - * Table used to compute exp2(x) - * - * tab_exp2[i] = (1<<14) * exp2(i/32) = 2^(i/32) i=0..32 - */ -static const uint16_t tab_exp2[33] = -{ - 16384, 16743, 17109, 17484, 17867, 18258, 18658, 19066, 19484, 19911, - 20347, 20792, 21247, 21713, 22188, 22674, 23170, 23678, 24196, 24726, - 25268, 25821, 26386, 26964, 27554, 28158, 28774, 29405, 30048, 30706, - 31379, 32066, 32767 -}; - -int16_t ff_cos(uint16_t arg) -{ - uint8_t offset= arg; - uint8_t ind = arg >> 8; - - assert(arg < 0x4000); - - return FFMAX(base_cos[ind] + ((slope_cos[ind] * offset) >> 12), -0x8000); -} - -int ff_exp2(uint16_t power) -{ - uint16_t frac_x0; - uint16_t frac_dx; - int result; - - assert(power <= 0x7fff); - - frac_x0 = power >> 10; - frac_dx = (power & 0x03ff) << 5; - - result = tab_exp2[frac_x0] << 15; - result += frac_dx * (tab_exp2[frac_x0+1] - tab_exp2[frac_x0]); - - return result >> 10; -} - -#else // G729_BITEXACT - /** * Cosine table: base_cos[i] = (1<<15) * cos(i*PI/64) */ @@ -154,8 +78,6 @@ int ff_exp2(uint16_t power) return result + ((result*(power&31)*89)>>22); } -#endif // else G729_BITEXACT - /** * Table used to compute log2(x) * @@ -163,17 +85,10 @@ int ff_exp2(uint16_t power) */ static const uint16_t tab_log2[33] = { -#ifdef G729_BITEXACT - 0, 1455, 2866, 4236, 5568, 6863, 8124, 9352, - 10549, 11716, 12855, 13967, 15054, 16117, 17156, 18172, - 19167, 20142, 21097, 22033, 22951, 23852, 24735, 25603, - 26455, 27291, 28113, 28922, 29716, 30497, 31266, 32023, 32767, -#else 4, 1459, 2870, 4240, 5572, 6867, 8127, 9355, 10552, 11719, 12858, 13971, 15057, 16120, 17158, 18175, 19170, 20145, 21100, 22036, 22954, 23854, 24738, 25605, 26457, 27294, 28116, 28924, 29719, 30500, 31269, 32025, 32769, -#endif }; int ff_log2(uint32_t value) |