Chris@69: /* Copyright (c) 2007-2008 CSIRO Chris@69: Copyright (c) 2007-2009 Xiph.Org Foundation Chris@69: Copyright (c) 2007-2009 Timothy B. Terriberry Chris@69: Written by Timothy B. Terriberry and Jean-Marc Valin */ Chris@69: /* Chris@69: Redistribution and use in source and binary forms, with or without Chris@69: modification, are permitted provided that the following conditions Chris@69: are met: Chris@69: Chris@69: - Redistributions of source code must retain the above copyright Chris@69: notice, this list of conditions and the following disclaimer. Chris@69: Chris@69: - Redistributions in binary form must reproduce the above copyright Chris@69: notice, this list of conditions and the following disclaimer in the Chris@69: documentation and/or other materials provided with the distribution. Chris@69: Chris@69: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS Chris@69: ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT Chris@69: LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR Chris@69: A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER Chris@69: OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, Chris@69: EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, Chris@69: PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR Chris@69: PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF Chris@69: LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING Chris@69: NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS Chris@69: SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Chris@69: */ Chris@69: Chris@69: #ifdef HAVE_CONFIG_H Chris@69: #include "config.h" Chris@69: #endif Chris@69: Chris@69: #include "os_support.h" Chris@69: #include "cwrs.h" Chris@69: #include "mathops.h" Chris@69: #include "arch.h" Chris@69: Chris@69: #ifdef CUSTOM_MODES Chris@69: Chris@69: /*Guaranteed to return a conservatively large estimate of the binary logarithm Chris@69: with frac bits of fractional precision. Chris@69: Tested for all possible 32-bit inputs with frac=4, where the maximum Chris@69: overestimation is 0.06254243 bits.*/ Chris@69: int log2_frac(opus_uint32 val, int frac) Chris@69: { Chris@69: int l; Chris@69: l=EC_ILOG(val); Chris@69: if(val&(val-1)){ Chris@69: /*This is (val>>l-16), but guaranteed to round up, even if adding a bias Chris@69: before the shift would cause overflow (e.g., for 0xFFFFxxxx). Chris@69: Doesn't work for val=0, but that case fails the test above.*/ Chris@69: if(l>16)val=((val-1)>>(l-16))+1; Chris@69: else val<<=16-l; Chris@69: l=(l-1)<>16); Chris@69: l+=b<>b; Chris@69: val=(val*val+0x7FFF)>>15; Chris@69: } Chris@69: while(frac-->0); Chris@69: /*If val is not exactly 0x8000, then we have to round up the remainder.*/ Chris@69: return l+(val>0x8000); Chris@69: } Chris@69: /*Exact powers of two require no rounding.*/ Chris@69: else return (l-1)<0 ? sum(k=1...K,2**k*choose(N,k)*choose(K-1,k-1)) : 1, Chris@69: where choose() is the binomial function. Chris@69: A table of values for N<10 and K<10 looks like: Chris@69: V[10][10] = { Chris@69: {1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, Chris@69: {1, 2, 2, 2, 2, 2, 2, 2, 2, 2}, Chris@69: {1, 4, 8, 12, 16, 20, 24, 28, 32, 36}, Chris@69: {1, 6, 18, 38, 66, 102, 146, 198, 258, 326}, Chris@69: {1, 8, 32, 88, 192, 360, 608, 952, 1408, 1992}, Chris@69: {1, 10, 50, 170, 450, 1002, 1970, 3530, 5890, 9290}, Chris@69: {1, 12, 72, 292, 912, 2364, 5336, 10836, 20256, 35436}, Chris@69: {1, 14, 98, 462, 1666, 4942, 12642, 28814, 59906, 115598}, Chris@69: {1, 16, 128, 688, 2816, 9424, 27008, 68464, 157184, 332688}, Chris@69: {1, 18, 162, 978, 4482, 16722, 53154, 148626, 374274, 864146} Chris@69: }; Chris@69: Chris@69: U(N,K) = the number of such combinations wherein N-1 objects are taken at Chris@69: most K-1 at a time. Chris@69: This is given by Chris@69: U(N,K) = sum(k=0...K-1,V(N-1,k)) Chris@69: = K>0 ? (V(N-1,K-1) + V(N,K-1))/2 : 0. Chris@69: The latter expression also makes clear that U(N,K) is half the number of such Chris@69: combinations wherein the first object is taken at least once. Chris@69: Although it may not be clear from either of these definitions, U(N,K) is the Chris@69: natural function to work with when enumerating the pulse vector codebooks, Chris@69: not V(N,K). Chris@69: U(N,K) is not well-defined for N=0, but with the extension Chris@69: U(0,K) = K>0 ? 0 : 1, Chris@69: the function becomes symmetric: U(N,K) = U(K,N), with a similar table: Chris@69: U[10][10] = { Chris@69: {1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, Chris@69: {0, 1, 1, 1, 1, 1, 1, 1, 1, 1}, Chris@69: {0, 1, 3, 5, 7, 9, 11, 13, 15, 17}, Chris@69: {0, 1, 5, 13, 25, 41, 61, 85, 113, 145}, Chris@69: {0, 1, 7, 25, 63, 129, 231, 377, 575, 833}, Chris@69: {0, 1, 9, 41, 129, 321, 681, 1289, 2241, 3649}, Chris@69: {0, 1, 11, 61, 231, 681, 1683, 3653, 7183, 13073}, Chris@69: {0, 1, 13, 85, 377, 1289, 3653, 8989, 19825, 40081}, Chris@69: {0, 1, 15, 113, 575, 2241, 7183, 19825, 48639, 108545}, Chris@69: {0, 1, 17, 145, 833, 3649, 13073, 40081, 108545, 265729} Chris@69: }; Chris@69: Chris@69: With this extension, V(N,K) may be written in terms of U(N,K): Chris@69: V(N,K) = U(N,K) + U(N,K+1) Chris@69: for all N>=0, K>=0. Chris@69: Thus U(N,K+1) represents the number of combinations where the first element Chris@69: is positive or zero, and U(N,K) represents the number of combinations where Chris@69: it is negative. Chris@69: With a large enough table of U(N,K) values, we could write O(N) encoding Chris@69: and O(min(N*log(K),N+K)) decoding routines, but such a table would be Chris@69: prohibitively large for small embedded devices (K may be as large as 32767 Chris@69: for small N, and N may be as large as 200). Chris@69: Chris@69: Both functions obey the same recurrence relation: Chris@69: V(N,K) = V(N-1,K) + V(N,K-1) + V(N-1,K-1), Chris@69: U(N,K) = U(N-1,K) + U(N,K-1) + U(N-1,K-1), Chris@69: for all N>0, K>0, with different initial conditions at N=0 or K=0. Chris@69: This allows us to construct a row of one of the tables above given the Chris@69: previous row or the next row. Chris@69: Thus we can derive O(NK) encoding and decoding routines with O(K) memory Chris@69: using only addition and subtraction. Chris@69: Chris@69: When encoding, we build up from the U(2,K) row and work our way forwards. Chris@69: When decoding, we need to start at the U(N,K) row and work our way backwards, Chris@69: which requires a means of computing U(N,K). Chris@69: U(N,K) may be computed from two previous values with the same N: Chris@69: U(N,K) = ((2*N-1)*U(N,K-1) - U(N,K-2))/(K-1) + U(N,K-2) Chris@69: for all N>1, and since U(N,K) is symmetric, a similar relation holds for two Chris@69: previous values with the same K: Chris@69: U(N,K>1) = ((2*K-1)*U(N-1,K) - U(N-2,K))/(N-1) + U(N-2,K) Chris@69: for all K>1. Chris@69: This allows us to construct an arbitrary row of the U(N,K) table by starting Chris@69: with the first two values, which are constants. Chris@69: This saves roughly 2/3 the work in our O(NK) decoding routine, but costs O(K) Chris@69: multiplications. Chris@69: Similar relations can be derived for V(N,K), but are not used here. Chris@69: Chris@69: For N>0 and K>0, U(N,K) and V(N,K) take on the form of an (N-1)-degree Chris@69: polynomial for fixed N. Chris@69: The first few are Chris@69: U(1,K) = 1, Chris@69: U(2,K) = 2*K-1, Chris@69: U(3,K) = (2*K-2)*K+1, Chris@69: U(4,K) = (((4*K-6)*K+8)*K-3)/3, Chris@69: U(5,K) = ((((2*K-4)*K+10)*K-8)*K+3)/3, Chris@69: and Chris@69: V(1,K) = 2, Chris@69: V(2,K) = 4*K, Chris@69: V(3,K) = 4*K*K+2, Chris@69: V(4,K) = 8*(K*K+2)*K/3, Chris@69: V(5,K) = ((4*K*K+20)*K*K+6)/3, Chris@69: for all K>0. Chris@69: This allows us to derive O(N) encoding and O(N*log(K)) decoding routines for Chris@69: small N (and indeed decoding is also O(N) for N<3). Chris@69: Chris@69: @ARTICLE{Fis86, Chris@69: author="Thomas R. Fischer", Chris@69: title="A Pyramid Vector Quantizer", Chris@69: journal="IEEE Transactions on Information Theory", Chris@69: volume="IT-32", Chris@69: number=4, Chris@69: pages="568--583", Chris@69: month=Jul, Chris@69: year=1986 Chris@69: }*/ Chris@69: Chris@69: #if !defined(SMALL_FOOTPRINT) Chris@69: Chris@69: /*U(N,K) = U(K,N) := N>0?K>0?U(N-1,K)+U(N,K-1)+U(N-1,K-1):0:K>0?1:0*/ Chris@69: # define CELT_PVQ_U(_n,_k) (CELT_PVQ_U_ROW[IMIN(_n,_k)][IMAX(_n,_k)]) Chris@69: /*V(N,K) := U(N,K)+U(N,K+1) = the number of PVQ codewords for a band of size N Chris@69: with K pulses allocated to it.*/ Chris@69: # define CELT_PVQ_V(_n,_k) (CELT_PVQ_U(_n,_k)+CELT_PVQ_U(_n,(_k)+1)) Chris@69: Chris@69: /*For each V(N,K) supported, we will access element U(min(N,K+1),max(N,K+1)). Chris@69: Thus, the number of entries in row I is the larger of the maximum number of Chris@69: pulses we will ever allocate for a given N=I (K=128, or however many fit in Chris@69: 32 bits, whichever is smaller), plus one, and the maximum N for which Chris@69: K=I-1 pulses fit in 32 bits. Chris@69: The largest band size in an Opus Custom mode is 208. Chris@69: Otherwise, we can limit things to the set of N which can be achieved by Chris@69: splitting a band from a standard Opus mode: 176, 144, 96, 88, 72, 64, 48, Chris@69: 44, 36, 32, 24, 22, 18, 16, 8, 4, 2).*/ Chris@69: #if defined(CUSTOM_MODES) Chris@69: static const opus_uint32 CELT_PVQ_U_DATA[1488]={ Chris@69: #else Chris@69: static const opus_uint32 CELT_PVQ_U_DATA[1272]={ Chris@69: #endif Chris@69: /*N=0, K=0...176:*/ Chris@69: 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...208:*/ Chris@69: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Chris@69: 0, 0, 0, 0, 0, 0, Chris@69: #endif Chris@69: /*N=1, K=1...176:*/ Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...208:*/ Chris@69: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, Chris@69: 1, 1, 1, 1, 1, 1, Chris@69: #endif Chris@69: /*N=2, K=2...176:*/ Chris@69: 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, Chris@69: 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, Chris@69: 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, Chris@69: 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141, 143, Chris@69: 145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, Chris@69: 175, 177, 179, 181, 183, 185, 187, 189, 191, 193, 195, 197, 199, 201, 203, Chris@69: 205, 207, 209, 211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233, Chris@69: 235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255, 257, 259, 261, 263, Chris@69: 265, 267, 269, 271, 273, 275, 277, 279, 281, 283, 285, 287, 289, 291, 293, Chris@69: 295, 297, 299, 301, 303, 305, 307, 309, 311, 313, 315, 317, 319, 321, 323, Chris@69: 325, 327, 329, 331, 333, 335, 337, 339, 341, 343, 345, 347, 349, 351, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...208:*/ Chris@69: 353, 355, 357, 359, 361, 363, 365, 367, 369, 371, 373, 375, 377, 379, 381, Chris@69: 383, 385, 387, 389, 391, 393, 395, 397, 399, 401, 403, 405, 407, 409, 411, Chris@69: 413, 415, Chris@69: #endif Chris@69: /*N=3, K=3...176:*/ Chris@69: 13, 25, 41, 61, 85, 113, 145, 181, 221, 265, 313, 365, 421, 481, 545, 613, Chris@69: 685, 761, 841, 925, 1013, 1105, 1201, 1301, 1405, 1513, 1625, 1741, 1861, Chris@69: 1985, 2113, 2245, 2381, 2521, 2665, 2813, 2965, 3121, 3281, 3445, 3613, 3785, Chris@69: 3961, 4141, 4325, 4513, 4705, 4901, 5101, 5305, 5513, 5725, 5941, 6161, 6385, Chris@69: 6613, 6845, 7081, 7321, 7565, 7813, 8065, 8321, 8581, 8845, 9113, 9385, 9661, Chris@69: 9941, 10225, 10513, 10805, 11101, 11401, 11705, 12013, 12325, 12641, 12961, Chris@69: 13285, 13613, 13945, 14281, 14621, 14965, 15313, 15665, 16021, 16381, 16745, Chris@69: 17113, 17485, 17861, 18241, 18625, 19013, 19405, 19801, 20201, 20605, 21013, Chris@69: 21425, 21841, 22261, 22685, 23113, 23545, 23981, 24421, 24865, 25313, 25765, Chris@69: 26221, 26681, 27145, 27613, 28085, 28561, 29041, 29525, 30013, 30505, 31001, Chris@69: 31501, 32005, 32513, 33025, 33541, 34061, 34585, 35113, 35645, 36181, 36721, Chris@69: 37265, 37813, 38365, 38921, 39481, 40045, 40613, 41185, 41761, 42341, 42925, Chris@69: 43513, 44105, 44701, 45301, 45905, 46513, 47125, 47741, 48361, 48985, 49613, Chris@69: 50245, 50881, 51521, 52165, 52813, 53465, 54121, 54781, 55445, 56113, 56785, Chris@69: 57461, 58141, 58825, 59513, 60205, 60901, 61601, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...208:*/ Chris@69: 62305, 63013, 63725, 64441, 65161, 65885, 66613, 67345, 68081, 68821, 69565, Chris@69: 70313, 71065, 71821, 72581, 73345, 74113, 74885, 75661, 76441, 77225, 78013, Chris@69: 78805, 79601, 80401, 81205, 82013, 82825, 83641, 84461, 85285, 86113, Chris@69: #endif Chris@69: /*N=4, K=4...176:*/ Chris@69: 63, 129, 231, 377, 575, 833, 1159, 1561, 2047, 2625, 3303, 4089, 4991, 6017, Chris@69: 7175, 8473, 9919, 11521, 13287, 15225, 17343, 19649, 22151, 24857, 27775, Chris@69: 30913, 34279, 37881, 41727, 45825, 50183, 54809, 59711, 64897, 70375, 76153, Chris@69: 82239, 88641, 95367, 102425, 109823, 117569, 125671, 134137, 142975, 152193, Chris@69: 161799, 171801, 182207, 193025, 204263, 215929, 228031, 240577, 253575, Chris@69: 267033, 280959, 295361, 310247, 325625, 341503, 357889, 374791, 392217, Chris@69: 410175, 428673, 447719, 467321, 487487, 508225, 529543, 551449, 573951, Chris@69: 597057, 620775, 645113, 670079, 695681, 721927, 748825, 776383, 804609, Chris@69: 833511, 863097, 893375, 924353, 956039, 988441, 1021567, 1055425, 1090023, Chris@69: 1125369, 1161471, 1198337, 1235975, 1274393, 1313599, 1353601, 1394407, Chris@69: 1436025, 1478463, 1521729, 1565831, 1610777, 1656575, 1703233, 1750759, Chris@69: 1799161, 1848447, 1898625, 1949703, 2001689, 2054591, 2108417, 2163175, Chris@69: 2218873, 2275519, 2333121, 2391687, 2451225, 2511743, 2573249, 2635751, Chris@69: 2699257, 2763775, 2829313, 2895879, 2963481, 3032127, 3101825, 3172583, Chris@69: 3244409, 3317311, 3391297, 3466375, 3542553, 3619839, 3698241, 3777767, Chris@69: 3858425, 3940223, 4023169, 4107271, 4192537, 4278975, 4366593, 4455399, Chris@69: 4545401, 4636607, 4729025, 4822663, 4917529, 5013631, 5110977, 5209575, Chris@69: 5309433, 5410559, 5512961, 5616647, 5721625, 5827903, 5935489, 6044391, Chris@69: 6154617, 6266175, 6379073, 6493319, 6608921, 6725887, 6844225, 6963943, Chris@69: 7085049, 7207551, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...208:*/ Chris@69: 7331457, 7456775, 7583513, 7711679, 7841281, 7972327, 8104825, 8238783, Chris@69: 8374209, 8511111, 8649497, 8789375, 8930753, 9073639, 9218041, 9363967, Chris@69: 9511425, 9660423, 9810969, 9963071, 10116737, 10271975, 10428793, 10587199, Chris@69: 10747201, 10908807, 11072025, 11236863, 11403329, 11571431, 11741177, Chris@69: 11912575, Chris@69: #endif Chris@69: /*N=5, K=5...176:*/ Chris@69: 321, 681, 1289, 2241, 3649, 5641, 8361, 11969, 16641, 22569, 29961, 39041, Chris@69: 50049, 63241, 78889, 97281, 118721, 143529, 172041, 204609, 241601, 283401, Chris@69: 330409, 383041, 441729, 506921, 579081, 658689, 746241, 842249, 947241, Chris@69: 1061761, 1186369, 1321641, 1468169, 1626561, 1797441, 1981449, 2179241, Chris@69: 2391489, 2618881, 2862121, 3121929, 3399041, 3694209, 4008201, 4341801, Chris@69: 4695809, 5071041, 5468329, 5888521, 6332481, 6801089, 7295241, 7815849, Chris@69: 8363841, 8940161, 9545769, 10181641, 10848769, 11548161, 12280841, 13047849, Chris@69: 13850241, 14689089, 15565481, 16480521, 17435329, 18431041, 19468809, Chris@69: 20549801, 21675201, 22846209, 24064041, 25329929, 26645121, 28010881, Chris@69: 29428489, 30899241, 32424449, 34005441, 35643561, 37340169, 39096641, Chris@69: 40914369, 42794761, 44739241, 46749249, 48826241, 50971689, 53187081, Chris@69: 55473921, 57833729, 60268041, 62778409, 65366401, 68033601, 70781609, Chris@69: 73612041, 76526529, 79526721, 82614281, 85790889, 89058241, 92418049, Chris@69: 95872041, 99421961, 103069569, 106816641, 110664969, 114616361, 118672641, Chris@69: 122835649, 127107241, 131489289, 135983681, 140592321, 145317129, 150160041, Chris@69: 155123009, 160208001, 165417001, 170752009, 176215041, 181808129, 187533321, Chris@69: 193392681, 199388289, 205522241, 211796649, 218213641, 224775361, 231483969, Chris@69: 238341641, 245350569, 252512961, 259831041, 267307049, 274943241, 282741889, Chris@69: 290705281, 298835721, 307135529, 315607041, 324252609, 333074601, 342075401, Chris@69: 351257409, 360623041, 370174729, 379914921, 389846081, 399970689, 410291241, Chris@69: 420810249, 431530241, 442453761, 453583369, 464921641, 476471169, 488234561, Chris@69: 500214441, 512413449, 524834241, 537479489, 550351881, 563454121, 576788929, Chris@69: 590359041, 604167209, 618216201, 632508801, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...208:*/ Chris@69: 647047809, 661836041, 676876329, 692171521, 707724481, 723538089, 739615241, Chris@69: 755958849, 772571841, 789457161, 806617769, 824056641, 841776769, 859781161, Chris@69: 878072841, 896654849, 915530241, 934702089, 954173481, 973947521, 994027329, Chris@69: 1014416041, 1035116809, 1056132801, 1077467201, 1099123209, 1121104041, Chris@69: 1143412929, 1166053121, 1189027881, 1212340489, 1235994241, Chris@69: #endif Chris@69: /*N=6, K=6...96:*/ Chris@69: 1683, 3653, 7183, 13073, 22363, 36365, 56695, 85305, 124515, 177045, 246047, Chris@69: 335137, 448427, 590557, 766727, 982729, 1244979, 1560549, 1937199, 2383409, Chris@69: 2908411, 3522221, 4235671, 5060441, 6009091, 7095093, 8332863, 9737793, Chris@69: 11326283, 13115773, 15124775, 17372905, 19880915, 22670725, 25765455, Chris@69: 29189457, 32968347, 37129037, 41699767, 46710137, 52191139, 58175189, Chris@69: 64696159, 71789409, 79491819, 87841821, 96879431, 106646281, 117185651, Chris@69: 128542501, 140763503, 153897073, 167993403, 183104493, 199284183, 216588185, Chris@69: 235074115, 254801525, 275831935, 298228865, 322057867, 347386557, 374284647, Chris@69: 402823977, 433078547, 465124549, 499040399, 534906769, 572806619, 612825229, Chris@69: 655050231, 699571641, 746481891, 795875861, 847850911, 902506913, 959946283, Chris@69: 1020274013, 1083597703, 1150027593, 1219676595, 1292660325, 1369097135, Chris@69: 1449108145, 1532817275, 1620351277, 1711839767, 1807415257, 1907213187, Chris@69: 2011371957, 2120032959, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...109:*/ Chris@69: 2233340609U, 2351442379U, 2474488829U, 2602633639U, 2736033641U, 2874848851U, Chris@69: 3019242501U, 3169381071U, 3325434321U, 3487575323U, 3655980493U, 3830829623U, Chris@69: 4012305913U, Chris@69: #endif Chris@69: /*N=7, K=7...54*/ Chris@69: 8989, 19825, 40081, 75517, 134245, 227305, 369305, 579125, 880685, 1303777, Chris@69: 1884961, 2668525, 3707509, 5064793, 6814249, 9041957, 11847485, 15345233, Chris@69: 19665841, 24957661, 31388293, 39146185, 48442297, 59511829, 72616013, Chris@69: 88043969, 106114625, 127178701, 151620757, 179861305, 212358985, 249612805, Chris@69: 292164445, 340600625, 395555537, 457713341, 527810725, 606639529, 695049433, Chris@69: 793950709, 904317037, 1027188385, 1163673953, 1314955181, 1482288821, Chris@69: 1667010073, 1870535785, 2094367717, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...60:*/ Chris@69: 2340095869U, 2609401873U, 2904062449U, 3225952925U, 3577050821U, 3959439497U, Chris@69: #endif Chris@69: /*N=8, K=8...37*/ Chris@69: 48639, 108545, 224143, 433905, 795455, 1392065, 2340495, 3800305, 5984767, Chris@69: 9173505, 13726991, 20103025, 28875327, 40754369, 56610575, 77500017, Chris@69: 104692735, 139703809, 184327311, 240673265, 311207743, 398796225, 506750351, Chris@69: 638878193, 799538175, 993696769, 1226990095, 1505789553, 1837271615, Chris@69: 2229491905U, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...40:*/ Chris@69: 2691463695U, 3233240945U, 3866006015U, Chris@69: #endif Chris@69: /*N=9, K=9...28:*/ Chris@69: 265729, 598417, 1256465, 2485825, 4673345, 8405905, 14546705, 24331777, Chris@69: 39490049, 62390545, 96220561, 145198913, 214828609, 312193553, 446304145, Chris@69: 628496897, 872893441, 1196924561, 1621925137, 2173806145U, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...29:*/ Chris@69: 2883810113U, Chris@69: #endif Chris@69: /*N=10, K=10...24:*/ Chris@69: 1462563, 3317445, 7059735, 14218905, 27298155, 50250765, 89129247, 152951073, Chris@69: 254831667, 413442773, 654862247, 1014889769, 1541911931, 2300409629U, Chris@69: 3375210671U, Chris@69: /*N=11, K=11...19:*/ Chris@69: 8097453, 18474633, 39753273, 81270333, 158819253, 298199265, 540279585, Chris@69: 948062325, 1616336765, Chris@69: #if defined(CUSTOM_MODES) Chris@69: /*...20:*/ Chris@69: 2684641785U, Chris@69: #endif Chris@69: /*N=12, K=12...18:*/ Chris@69: 45046719, 103274625, 224298231, 464387817, 921406335, 1759885185, Chris@69: 3248227095U, Chris@69: /*N=13, K=13...16:*/ Chris@69: 251595969, 579168825, 1267854873, 2653649025U, Chris@69: /*N=14, K=14:*/ Chris@69: 1409933619 Chris@69: }; Chris@69: Chris@69: #if defined(CUSTOM_MODES) Chris@69: static const opus_uint32 *const CELT_PVQ_U_ROW[15]={ Chris@69: CELT_PVQ_U_DATA+ 0,CELT_PVQ_U_DATA+ 208,CELT_PVQ_U_DATA+ 415, Chris@69: CELT_PVQ_U_DATA+ 621,CELT_PVQ_U_DATA+ 826,CELT_PVQ_U_DATA+1030, Chris@69: CELT_PVQ_U_DATA+1233,CELT_PVQ_U_DATA+1336,CELT_PVQ_U_DATA+1389, Chris@69: CELT_PVQ_U_DATA+1421,CELT_PVQ_U_DATA+1441,CELT_PVQ_U_DATA+1455, Chris@69: CELT_PVQ_U_DATA+1464,CELT_PVQ_U_DATA+1470,CELT_PVQ_U_DATA+1473 Chris@69: }; Chris@69: #else Chris@69: static const opus_uint32 *const CELT_PVQ_U_ROW[15]={ Chris@69: CELT_PVQ_U_DATA+ 0,CELT_PVQ_U_DATA+ 176,CELT_PVQ_U_DATA+ 351, Chris@69: CELT_PVQ_U_DATA+ 525,CELT_PVQ_U_DATA+ 698,CELT_PVQ_U_DATA+ 870, Chris@69: CELT_PVQ_U_DATA+1041,CELT_PVQ_U_DATA+1131,CELT_PVQ_U_DATA+1178, Chris@69: CELT_PVQ_U_DATA+1207,CELT_PVQ_U_DATA+1226,CELT_PVQ_U_DATA+1240, Chris@69: CELT_PVQ_U_DATA+1248,CELT_PVQ_U_DATA+1254,CELT_PVQ_U_DATA+1257 Chris@69: }; Chris@69: #endif Chris@69: Chris@69: #if defined(CUSTOM_MODES) Chris@69: void get_required_bits(opus_int16 *_bits,int _n,int _maxk,int _frac){ Chris@69: int k; Chris@69: /*_maxk==0 => there's nothing to do.*/ Chris@69: celt_assert(_maxk>0); Chris@69: _bits[0]=0; Chris@69: for(k=1;k<=_maxk;k++)_bits[k]=log2_frac(CELT_PVQ_V(_n,k),_frac); Chris@69: } Chris@69: #endif Chris@69: Chris@69: static opus_uint32 icwrs(int _n,const int *_y){ Chris@69: opus_uint32 i; Chris@69: int j; Chris@69: int k; Chris@69: celt_assert(_n>=2); Chris@69: j=_n-1; Chris@69: i=_y[j]<0; Chris@69: k=abs(_y[j]); Chris@69: do{ Chris@69: j--; Chris@69: i+=CELT_PVQ_U(_n-j,k); Chris@69: k+=abs(_y[j]); Chris@69: if(_y[j]<0)i+=CELT_PVQ_U(_n-j,k+1); Chris@69: } Chris@69: while(j>0); Chris@69: return i; Chris@69: } Chris@69: Chris@69: void encode_pulses(const int *_y,int _n,int _k,ec_enc *_enc){ Chris@69: celt_assert(_k>0); Chris@69: ec_enc_uint(_enc,icwrs(_n,_y),CELT_PVQ_V(_n,_k)); Chris@69: } Chris@69: Chris@69: static opus_val32 cwrsi(int _n,int _k,opus_uint32 _i,int *_y){ Chris@69: opus_uint32 p; Chris@69: int s; Chris@69: int k0; Chris@69: opus_int16 val; Chris@69: opus_val32 yy=0; Chris@69: celt_assert(_k>0); Chris@69: celt_assert(_n>1); Chris@69: while(_n>2){ Chris@69: opus_uint32 q; Chris@69: /*Lots of pulses case:*/ Chris@69: if(_k>=_n){ Chris@69: const opus_uint32 *row; Chris@69: row=CELT_PVQ_U_ROW[_n]; Chris@69: /*Are the pulses in this dimension negative?*/ Chris@69: p=row[_k+1]; Chris@69: s=-(_i>=p); Chris@69: _i-=p&s; Chris@69: /*Count how many pulses were placed in this dimension.*/ Chris@69: k0=_k; Chris@69: q=row[_n]; Chris@69: if(q>_i){ Chris@69: celt_sig_assert(p>q); Chris@69: _k=_n; Chris@69: do p=CELT_PVQ_U_ROW[--_k][_n]; Chris@69: while(p>_i); Chris@69: } Chris@69: else for(p=row[_k];p>_i;p=row[_k])_k--; Chris@69: _i-=p; Chris@69: val=(k0-_k+s)^s; Chris@69: *_y++=val; Chris@69: yy=MAC16_16(yy,val,val); Chris@69: } Chris@69: /*Lots of dimensions case:*/ Chris@69: else{ Chris@69: /*Are there any pulses in this dimension at all?*/ Chris@69: p=CELT_PVQ_U_ROW[_k][_n]; Chris@69: q=CELT_PVQ_U_ROW[_k+1][_n]; Chris@69: if(p<=_i&&_i=q); Chris@69: _i-=q&s; Chris@69: /*Count how many pulses were placed in this dimension.*/ Chris@69: k0=_k; Chris@69: do p=CELT_PVQ_U_ROW[--_k][_n]; Chris@69: while(p>_i); Chris@69: _i-=p; Chris@69: val=(k0-_k+s)^s; Chris@69: *_y++=val; Chris@69: yy=MAC16_16(yy,val,val); Chris@69: } Chris@69: } Chris@69: _n--; Chris@69: } Chris@69: /*_n==2*/ Chris@69: p=2*_k+1; Chris@69: s=-(_i>=p); Chris@69: _i-=p&s; Chris@69: k0=_k; Chris@69: _k=(_i+1)>>1; Chris@69: if(_k)_i-=2*_k-1; Chris@69: val=(k0-_k+s)^s; Chris@69: *_y++=val; Chris@69: yy=MAC16_16(yy,val,val); Chris@69: /*_n==1*/ Chris@69: s=-(int)_i; Chris@69: val=(_k+s)^s; Chris@69: *_y=val; Chris@69: yy=MAC16_16(yy,val,val); Chris@69: return yy; Chris@69: } Chris@69: Chris@69: opus_val32 decode_pulses(int *_y,int _n,int _k,ec_dec *_dec){ Chris@69: return cwrsi(_n,_k,ec_dec_uint(_dec,CELT_PVQ_V(_n,_k)),_y); Chris@69: } Chris@69: Chris@69: #else /* SMALL_FOOTPRINT */ Chris@69: Chris@69: /*Computes the next row/column of any recurrence that obeys the relation Chris@69: u[i][j]=u[i-1][j]+u[i][j-1]+u[i-1][j-1]. Chris@69: _ui0 is the base case for the new row/column.*/ Chris@69: static OPUS_INLINE void unext(opus_uint32 *_ui,unsigned _len,opus_uint32 _ui0){ Chris@69: opus_uint32 ui1; Chris@69: unsigned j; Chris@69: /*This do-while will overrun the array if we don't have storage for at least Chris@69: 2 values.*/ Chris@69: j=1; do { Chris@69: ui1=UADD32(UADD32(_ui[j],_ui[j-1]),_ui0); Chris@69: _ui[j-1]=_ui0; Chris@69: _ui0=ui1; Chris@69: } while (++j<_len); Chris@69: _ui[j-1]=_ui0; Chris@69: } Chris@69: Chris@69: /*Computes the previous row/column of any recurrence that obeys the relation Chris@69: u[i-1][j]=u[i][j]-u[i][j-1]-u[i-1][j-1]. Chris@69: _ui0 is the base case for the new row/column.*/ Chris@69: static OPUS_INLINE void uprev(opus_uint32 *_ui,unsigned _n,opus_uint32 _ui0){ Chris@69: opus_uint32 ui1; Chris@69: unsigned j; Chris@69: /*This do-while will overrun the array if we don't have storage for at least Chris@69: 2 values.*/ Chris@69: j=1; do { Chris@69: ui1=USUB32(USUB32(_ui[j],_ui[j-1]),_ui0); Chris@69: _ui[j-1]=_ui0; Chris@69: _ui0=ui1; Chris@69: } while (++j<_n); Chris@69: _ui[j-1]=_ui0; Chris@69: } Chris@69: Chris@69: /*Compute V(_n,_k), as well as U(_n,0..._k+1). Chris@69: _u: On exit, _u[i] contains U(_n,i) for i in [0..._k+1].*/ Chris@69: static opus_uint32 ncwrs_urow(unsigned _n,unsigned _k,opus_uint32 *_u){ Chris@69: opus_uint32 um2; Chris@69: unsigned len; Chris@69: unsigned k; Chris@69: len=_k+2; Chris@69: /*We require storage at least 3 values (e.g., _k>0).*/ Chris@69: celt_assert(len>=3); Chris@69: _u[0]=0; Chris@69: _u[1]=um2=1; Chris@69: /*If _n==0, _u[0] should be 1 and the rest should be 0.*/ Chris@69: /*If _n==1, _u[i] should be 1 for i>1.*/ Chris@69: celt_assert(_n>=2); Chris@69: /*If _k==0, the following do-while loop will overflow the buffer.*/ Chris@69: celt_assert(_k>0); Chris@69: k=2; Chris@69: do _u[k]=(k<<1)-1; Chris@69: while(++k0); Chris@69: j=0; Chris@69: do{ Chris@69: opus_uint32 p; Chris@69: int s; Chris@69: int yj; Chris@69: p=_u[_k+1]; Chris@69: s=-(_i>=p); Chris@69: _i-=p&s; Chris@69: yj=_k; Chris@69: p=_u[_k]; Chris@69: while(p>_i)p=_u[--_k]; Chris@69: _i-=p; Chris@69: yj-=_k; Chris@69: val=(yj+s)^s; Chris@69: _y[j]=val; Chris@69: yy=MAC16_16(yy,val,val); Chris@69: uprev(_u,_k+2,0); Chris@69: } Chris@69: while(++j<_n); Chris@69: return yy; Chris@69: } Chris@69: Chris@69: /*Returns the index of the given combination of K elements chosen from a set Chris@69: of size 1 with associated sign bits. Chris@69: _y: The vector of pulses, whose sum of absolute values is K. Chris@69: _k: Returns K.*/ Chris@69: static OPUS_INLINE opus_uint32 icwrs1(const int *_y,int *_k){ Chris@69: *_k=abs(_y[0]); Chris@69: return _y[0]<0; Chris@69: } Chris@69: Chris@69: /*Returns the index of the given combination of K elements chosen from a set Chris@69: of size _n with associated sign bits. Chris@69: _y: The vector of pulses, whose sum of absolute values must be _k. Chris@69: _nc: Returns V(_n,_k).*/ Chris@69: static OPUS_INLINE opus_uint32 icwrs(int _n,int _k,opus_uint32 *_nc,const int *_y, Chris@69: opus_uint32 *_u){ Chris@69: opus_uint32 i; Chris@69: int j; Chris@69: int k; Chris@69: /*We can't unroll the first two iterations of the loop unless _n>=2.*/ Chris@69: celt_assert(_n>=2); Chris@69: _u[0]=0; Chris@69: for(k=1;k<=_k+1;k++)_u[k]=(k<<1)-1; Chris@69: i=icwrs1(_y+_n-1,&k); Chris@69: j=_n-2; Chris@69: i+=_u[k]; Chris@69: k+=abs(_y[j]); Chris@69: if(_y[j]<0)i+=_u[k+1]; Chris@69: while(j-->0){ Chris@69: unext(_u,_k+2,0); Chris@69: i+=_u[k]; Chris@69: k+=abs(_y[j]); Chris@69: if(_y[j]<0)i+=_u[k+1]; Chris@69: } Chris@69: *_nc=_u[k]+_u[k+1]; Chris@69: return i; Chris@69: } Chris@69: Chris@69: #ifdef CUSTOM_MODES Chris@69: void get_required_bits(opus_int16 *_bits,int _n,int _maxk,int _frac){ Chris@69: int k; Chris@69: /*_maxk==0 => there's nothing to do.*/ Chris@69: celt_assert(_maxk>0); Chris@69: _bits[0]=0; Chris@69: if (_n==1) Chris@69: { Chris@69: for (k=1;k<=_maxk;k++) Chris@69: _bits[k] = 1<<_frac; Chris@69: } Chris@69: else { Chris@69: VARDECL(opus_uint32,u); Chris@69: SAVE_STACK; Chris@69: ALLOC(u,_maxk+2U,opus_uint32); Chris@69: ncwrs_urow(_n,_maxk,u); Chris@69: for(k=1;k<=_maxk;k++) Chris@69: _bits[k]=log2_frac(u[k]+u[k+1],_frac); Chris@69: RESTORE_STACK; Chris@69: } Chris@69: } Chris@69: #endif /* CUSTOM_MODES */ Chris@69: Chris@69: void encode_pulses(const int *_y,int _n,int _k,ec_enc *_enc){ Chris@69: opus_uint32 i; Chris@69: VARDECL(opus_uint32,u); Chris@69: opus_uint32 nc; Chris@69: SAVE_STACK; Chris@69: celt_assert(_k>0); Chris@69: ALLOC(u,_k+2U,opus_uint32); Chris@69: i=icwrs(_n,_k,&nc,_y,u); Chris@69: ec_enc_uint(_enc,i,nc); Chris@69: RESTORE_STACK; Chris@69: } Chris@69: Chris@69: opus_val32 decode_pulses(int *_y,int _n,int _k,ec_dec *_dec){ Chris@69: VARDECL(opus_uint32,u); Chris@69: int ret; Chris@69: SAVE_STACK; Chris@69: celt_assert(_k>0); Chris@69: ALLOC(u,_k+2U,opus_uint32); Chris@69: ret = cwrsi(_n,_k,ec_dec_uint(_dec,ncwrs_urow(_n,_k,u)),_y,u); Chris@69: RESTORE_STACK; Chris@69: return ret; Chris@69: } Chris@69: Chris@69: #endif /* SMALL_FOOTPRINT */