PaulStoffregen
11 years ago
1 changed files with 43 additions and 0 deletions
+ 43
- 0
ulaw.c
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| const int16_t ulaw_decode_table[256] = { | |||||
| 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, | |||||
| 80, 88, 96, 104, 112, 120, 128, 144, 160, 176, | |||||
| 192, 208, 224, 240, 256, 272, 288, 304, 320, 336, | |||||
| 352, 368, 384, 416, 448, 480, 512, 544, 576, 608, | |||||
| 640, 672, 704, 736, 768, 800, 832, 864, 896, 960, | |||||
| 1024, 1088, 1152, 1216, 1280, 1344, 1408, 1472, 1536, 1600, | |||||
| 1664, 1728, 1792, 1856, 1920, 2048, 2176, 2304, 2432, 2560, | |||||
| 2688, 2816, 2944, 3072, 3200, 3328, 3456, 3584, 3712, 3840, | |||||
| 3968, 4224, 4480, 4736, 4992, 5248, 5504, 5760, 6016, 6272, | |||||
| 6528, 6784, 7040, 7296, 7552, 7808, 8064, 8576, 9088, 9600, | |||||
| 10112, 10624, 11136, 11648, 12160, 12672, 13184, 13696, 14208, 14720, | |||||
| 15232, 15744, 16256, 17280, 18304, 19328, 20352, 21376, 22400, 23424, | |||||
| 24448, 25472, 26496, 27520, 28544, 29568, 30592, 31616, 0, -8, | |||||
| -16, -24, -32, -40, -48, -56, -64, -72, -80, -88, | |||||
| -96, -104, -112, -120, -128, -144, -160, -176, -192, -208, | |||||
| -224, -240, -256, -272, -288, -304, -320, -336, -352, -368, | |||||
| -384, -416, -448, -480, -512, -544, -576, -608, -640, -672, | |||||
| -704, -736, -768, -800, -832, -864, -896, -960, -1024, -1088, | |||||
| -1152, -1216, -1280, -1344, -1408, -1472, -1536, -1600, -1664, -1728, | |||||
| -1792, -1856, -1920, -2048, -2176, -2304, -2432, -2560, -2688, -2816, | |||||
| -2944, -3072, -3200, -3328, -3456, -3584, -3712, -3840, -3968, -4224, | |||||
| -4480, -4736, -4992, -5248, -5504, -5760, -6016, -6272, -6528, -6784, | |||||
| -7040, -7296, -7552, -7808, -8064, -8576, -9088, -9600,-10112,-10624, | |||||
| -11136,-11648,-12160,-12672,-13184,-13696,-14208,-14720,-15232,-15744, | |||||
| -16256,-17280,-18304,-19328,-20352,-21376,-22400,-23424,-24448,-25472, | |||||
| -26496,-27520,-28544,-29568,-30592,-31616 | |||||
| }; | |||||
| /* | |||||
| #! /usr/bin/perl | |||||
| print "const int16_t ulaw_decode_table[256] = {\n"; | |||||
| for ($i=0; $i < 256; $i++) { | |||||
| $r = ($i >> 4) & 7; | |||||
| $n = ($i & 0xF) << ($r + 3); | |||||
| $n |= 1 << ($r + 7); | |||||
| $n -= 128; | |||||
| $n *= -1 if $i > 127; | |||||
| printf "%6d", $n + 0; | |||||
| print "," if ($i < 255); | |||||
| print "\n" if ($i % 10) == 9; | |||||
| } | |||||
| print "\n};\n"; | |||||
| */ |
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