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Remove unused and non-compiling vestigial g729 decoder

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This commit is contained in:
Diego Biurrun 2011-07-15 02:37:33 +02:00
parent a005174b25
commit 79a9aab56f
5 changed files with 1 additions and 661 deletions
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20
libavcodec/acelp_vectors.c
View File

@ -48,26 +48,6 @@ const uint8_t ff_fc_2pulses_9bits_track1_gray[16] =
28, 26,
};
const uint8_t ff_fc_2pulses_9bits_track2_gray[32] =
{
0, 2,
5, 4,
12, 10,
7, 9,
25, 24,
20, 22,
14, 15,
19, 17,
36, 31,
21, 26,
1, 6,
16, 11,
27, 29,
32, 30,
39, 37,
34, 35,
};
const uint8_t ff_fc_4pulses_8bits_tracks_13[16] =
{
0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75,

31
libavcodec/acelp_vectors.h
View File

@ -81,37 +81,6 @@ extern const uint8_t ff_fc_4pulses_8bits_track_4[32];
extern const uint8_t ff_fc_2pulses_9bits_track1[16];
extern const uint8_t ff_fc_2pulses_9bits_track1_gray[16];
/**
* Track|Pulse| Positions
* -----------------------------------------
* 2 | 1 | 0, 7, 14, 20, 27, 34, 1, 21
* | | 2, 9, 15, 22, 29, 35, 6, 26
* | | 4,10, 17, 24, 30, 37, 11, 31
* | | 5,12, 19, 25, 32, 39, 16, 36
* -----------------------------------------
*
* @remark Track in the table should be read top-to-bottom, left-to-right.
*
* @note (EE.1) This table (from the reference code) does not comply with
* the specification.
* The specification contains the following table:
*
* Track|Pulse| Positions
* -----------------------------------------
* 2 | 1 | 0, 5, 10, 15, 20, 25, 30, 35
* | | 1, 6, 11, 16, 21, 26, 31, 36
* | | 2, 7, 12, 17, 22, 27, 32, 37
* | | 4, 9, 14, 19, 24, 29, 34, 39
*
* -----------------------------------------
*
* @note (EE.2) Reference G.729D code also uses gray decoding for each
* pulse index before looking up the value in the table.
*
* Used in G.729 @@6.4k (with gray coding)
*/
extern const uint8_t ff_fc_2pulses_9bits_track2_gray[32];
/**
* b60 hamming windowed sinc function coefficients
*/

2
libavcodec/amrnbdec.c
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@ -83,7 +83,7 @@
/** Maximum sharpening factor
*
* The specification says 0.8, which should be 13107, but the reference C code
* uses 13017 instead. (Amusingly the same applies to SHARP_MAX in g729dec.c.)
* uses 13017 instead. (Amusingly the same applies to SHARP_MAX in bitexact G.729.)
*/
#define SHARP_MAX 0.79449462890625

278
libavcodec/g729data.h
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@ -1,278 +0,0 @@
/*
* data for G.729 decoder
* Copyright (c) 2007 Vladimir Voroshilov
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_G729DATA_H
#define AVCODEC_G729DATA_H
#include <stdint.h>
#define MA_NP 4 ///< Moving Average (MA) prediction order
#define VQ_1ST_BITS 7 ///< first stage vector of quantizer (size in bits)
#define VQ_2ND_BITS 5 ///< second stage vector of quantizer (size in bits)
#define GC_1ST_IDX_BITS_8K 3 ///< gain codebook (first stage) index, 8k mode (size in bits)
#define GC_2ND_IDX_BITS_8K 4 ///< gain codebook (second stage) index, 8k mode (size in bits)
#define GC_1ST_IDX_BITS_6K4 3 ///< gain codebook (first stage) index, 6.4k mode (size in bits)
#define GC_2ND_IDX_BITS_6K4 3 ///< gain codebook (second stage) index, 6.4k mode (size in bits)
/**
* first stage LSP codebook
* (10-dimensional, with 128 entries (3.24 of G.729)
*/
static const int16_t cb_lsp_1st[1<<VQ_1ST_BITS][10] = { /* (2.13) */
{ 1486, 2168, 3751, 9074, 12134, 13944, 17983, 19173, 21190, 21820},
{ 1730, 2640, 3450, 4870, 6126, 7876, 15644, 17817, 20294, 21902},
{ 1568, 2256, 3088, 4874, 11063, 13393, 18307, 19293, 21109, 21741},
{ 1733, 2512, 3357, 4708, 6977, 10296, 17024, 17956, 19145, 20350},
{ 1744, 2436, 3308, 8731, 10432, 12007, 15614, 16639, 21359, 21913},
{ 1786, 2369, 3372, 4521, 6795, 12963, 17674, 18988, 20855, 21640},
{ 1631, 2433, 3361, 6328, 10709, 12013, 13277, 13904, 19441, 21088},
{ 1489, 2364, 3291, 6250, 9227, 10403, 13843, 15278, 17721, 21451},
{ 1869, 2533, 3475, 4365, 9152, 14513, 15908, 17022, 20611, 21411},
{ 2070, 3025, 4333, 5854, 7805, 9231, 10597, 16047, 20109, 21834},
{ 1910, 2673, 3419, 4261, 11168, 15111, 16577, 17591, 19310, 20265},
{ 1141, 1815, 2624, 4623, 6495, 9588, 13968, 16428, 19351, 21286},
{ 2192, 3171, 4707, 5808, 10904, 12500, 14162, 15664, 21124, 21789},
{ 1286, 1907, 2548, 3453, 9574, 11964, 15978, 17344, 19691, 22495},
{ 1921, 2720, 4604, 6684, 11503, 12992, 14350, 15262, 16997, 20791},
{ 2052, 2759, 3897, 5246, 6638, 10267, 15834, 16814, 18149, 21675},
{ 1798, 2497, 5617, 11449, 13189, 14711, 17050, 18195, 20307, 21182},
{ 1009, 1647, 2889, 5709, 9541, 12354, 15231, 18494, 20966, 22033},
{ 3016, 3794, 5406, 7469, 12488, 13984, 15328, 16334, 19952, 20791},
{ 2203, 3040, 3796, 5442, 11987, 13512, 14931, 16370, 17856, 18803},
{ 2912, 4292, 7988, 9572, 11562, 13244, 14556, 16529, 20004, 21073},
{ 2861, 3607, 5923, 7034, 9234, 12054, 13729, 18056, 20262, 20974},
{ 3069, 4311, 5967, 7367, 11482, 12699, 14309, 16233, 18333, 19172},
{ 2434, 3661, 4866, 5798, 10383, 11722, 13049, 15668, 18862, 19831},
{ 2020, 2605, 3860, 9241, 13275, 14644, 16010, 17099, 19268, 20251},
{ 1877, 2809, 3590, 4707, 11056, 12441, 15622, 17168, 18761, 19907},
{ 2107, 2873, 3673, 5799, 13579, 14687, 15938, 17077, 18890, 19831},
{ 1612, 2284, 2944, 3572, 8219, 13959, 15924, 17239, 18592, 20117},
{ 2420, 3156, 6542, 10215, 12061, 13534, 15305, 16452, 18717, 19880},
{ 1667, 2612, 3534, 5237, 10513, 11696, 12940, 16798, 18058, 19378},
{ 2388, 3017, 4839, 9333, 11413, 12730, 15024, 16248, 17449, 18677},
{ 1875, 2786, 4231, 6320, 8694, 10149, 11785, 17013, 18608, 19960},
{ 679, 1411, 4654, 8006, 11446, 13249, 15763, 18127, 20361, 21567},
{ 1838, 2596, 3578, 4608, 5650, 11274, 14355, 15886, 20579, 21754},
{ 1303, 1955, 2395, 3322, 12023, 13764, 15883, 18077, 20180, 21232},
{ 1438, 2102, 2663, 3462, 8328, 10362, 13763, 17248, 19732, 22344},
{ 860, 1904, 6098, 7775, 9815, 12007, 14821, 16709, 19787, 21132},
{ 1673, 2723, 3704, 6125, 7668, 9447, 13683, 14443, 20538, 21731},
{ 1246, 1849, 2902, 4508, 7221, 12710, 14835, 16314, 19335, 22720},
{ 1525, 2260, 3862, 5659, 7342, 11748, 13370, 14442, 18044, 21334},
{ 1196, 1846, 3104, 7063, 10972, 12905, 14814, 17037, 19922, 22636},
{ 2147, 3106, 4475, 6511, 8227, 9765, 10984, 12161, 18971, 21300},
{ 1585, 2405, 2994, 4036, 11481, 13177, 14519, 15431, 19967, 21275},
{ 1778, 2688, 3614, 4680, 9465, 11064, 12473, 16320, 19742, 20800},
{ 1862, 2586, 3492, 6719, 11708, 13012, 14364, 16128, 19610, 20425},
{ 1395, 2156, 2669, 3386, 10607, 12125, 13614, 16705, 18976, 21367},
{ 1444, 2117, 3286, 6233, 9423, 12981, 14998, 15853, 17188, 21857},
{ 2004, 2895, 3783, 4897, 6168, 7297, 12609, 16445, 19297, 21465},
{ 1495, 2863, 6360, 8100, 11399, 14271, 15902, 17711, 20479, 22061},
{ 2484, 3114, 5718, 7097, 8400, 12616, 14073, 14847, 20535, 21396},
{ 2424, 3277, 5296, 6284, 11290, 12903, 16022, 17508, 19333, 20283},
{ 2565, 3778, 5360, 6989, 8782, 10428, 14390, 15742, 17770, 21734},
{ 2727, 3384, 6613, 9254, 10542, 12236, 14651, 15687, 20074, 21102},
{ 1916, 2953, 6274, 8088, 9710, 10925, 12392, 16434, 20010, 21183},
{ 3384, 4366, 5349, 7667, 11180, 12605, 13921, 15324, 19901, 20754},
{ 3075, 4283, 5951, 7619, 9604, 11010, 12384, 14006, 20658, 21497},
{ 1751, 2455, 5147, 9966, 11621, 13176, 14739, 16470, 20788, 21756},
{ 1442, 2188, 3330, 6813, 8929, 12135, 14476, 15306, 19635, 20544},
{ 2294, 2895, 4070, 8035, 12233, 13416, 14762, 17367, 18952, 19688},
{ 1937, 2659, 4602, 6697, 9071, 12863, 14197, 15230, 16047, 18877},
{ 2071, 2663, 4216, 9445, 10887, 12292, 13949, 14909, 19236, 20341},
{ 1740, 2491, 3488, 8138, 9656, 11153, 13206, 14688, 20896, 21907},
{ 2199, 2881, 4675, 8527, 10051, 11408, 14435, 15463, 17190, 20597},
{ 1943, 2988, 4177, 6039, 7478, 8536, 14181, 15551, 17622, 21579},
{ 1825, 3175, 7062, 9818, 12824, 15450, 18330, 19856, 21830, 22412},
{ 2464, 3046, 4822, 5977, 7696, 15398, 16730, 17646, 20588, 21320},
{ 2550, 3393, 5305, 6920, 10235, 14083, 18143, 19195, 20681, 21336},
{ 3003, 3799, 5321, 6437, 7919, 11643, 15810, 16846, 18119, 18980},
{ 3455, 4157, 6838, 8199, 9877, 12314, 15905, 16826, 19949, 20892},
{ 3052, 3769, 4891, 5810, 6977, 10126, 14788, 15990, 19773, 20904},
{ 3671, 4356, 5827, 6997, 8460, 12084, 14154, 14939, 19247, 20423},
{ 2716, 3684, 5246, 6686, 8463, 10001, 12394, 14131, 16150, 19776},
{ 1945, 2638, 4130, 7995, 14338, 15576, 17057, 18206, 20225, 20997},
{ 2304, 2928, 4122, 4824, 5640, 13139, 15825, 16938, 20108, 21054},
{ 1800, 2516, 3350, 5219, 13406, 15948, 17618, 18540, 20531, 21252},
{ 1436, 2224, 2753, 4546, 9657, 11245, 15177, 16317, 17489, 19135},
{ 2319, 2899, 4980, 6936, 8404, 13489, 15554, 16281, 20270, 20911},
{ 2187, 2919, 4610, 5875, 7390, 12556, 14033, 16794, 20998, 21769},
{ 2235, 2923, 5121, 6259, 8099, 13589, 15340, 16340, 17927, 20159},
{ 1765, 2638, 3751, 5730, 7883, 10108, 13633, 15419, 16808, 18574},
{ 3460, 5741, 9596, 11742, 14413, 16080, 18173, 19090, 20845, 21601},
{ 3735, 4426, 6199, 7363, 9250, 14489, 16035, 17026, 19873, 20876},
{ 3521, 4778, 6887, 8680, 12717, 14322, 15950, 18050, 20166, 21145},
{ 2141, 2968, 6865, 8051, 10010, 13159, 14813, 15861, 17528, 18655},
{ 4148, 6128, 9028, 10871, 12686, 14005, 15976, 17208, 19587, 20595},
{ 4403, 5367, 6634, 8371, 10163, 11599, 14963, 16331, 17982, 18768},
{ 4091, 5386, 6852, 8770, 11563, 13290, 15728, 16930, 19056, 20102},
{ 2746, 3625, 5299, 7504, 10262, 11432, 13172, 15490, 16875, 17514},
{ 2248, 3556, 8539, 10590, 12665, 14696, 16515, 17824, 20268, 21247},
{ 1279, 1960, 3920, 7793, 10153, 14753, 16646, 18139, 20679, 21466},
{ 2440, 3475, 6737, 8654, 12190, 14588, 17119, 17925, 19110, 19979},
{ 1879, 2514, 4497, 7572, 10017, 14948, 16141, 16897, 18397, 19376},
{ 2804, 3688, 7490, 10086, 11218, 12711, 16307, 17470, 20077, 21126},
{ 2023, 2682, 3873, 8268, 10255, 11645, 15187, 17102, 18965, 19788},
{ 2823, 3605, 5815, 8595, 10085, 11469, 16568, 17462, 18754, 19876},
{ 2851, 3681, 5280, 7648, 9173, 10338, 14961, 16148, 17559, 18474},
{ 1348, 2645, 5826, 8785, 10620, 12831, 16255, 18319, 21133, 22586},
{ 2141, 3036, 4293, 6082, 7593, 10629, 17158, 18033, 21466, 22084},
{ 1608, 2375, 3384, 6878, 9970, 11227, 16928, 17650, 20185, 21120},
{ 2774, 3616, 5014, 6557, 7788, 8959, 17068, 18302, 19537, 20542},
{ 1934, 4813, 6204, 7212, 8979, 11665, 15989, 17811, 20426, 21703},
{ 2288, 3507, 5037, 6841, 8278, 9638, 15066, 16481, 21653, 22214},
{ 2951, 3771, 4878, 7578, 9016, 10298, 14490, 15242, 20223, 20990},
{ 3256, 4791, 6601, 7521, 8644, 9707, 13398, 16078, 19102, 20249},
{ 1827, 2614, 3486, 6039, 12149, 13823, 16191, 17282, 21423, 22041},
{ 1000, 1704, 3002, 6335, 8471, 10500, 14878, 16979, 20026, 22427},
{ 1646, 2286, 3109, 7245, 11493, 12791, 16824, 17667, 18981, 20222},
{ 1708, 2501, 3315, 6737, 8729, 9924, 16089, 17097, 18374, 19917},
{ 2623, 3510, 4478, 5645, 9862, 11115, 15219, 18067, 19583, 20382},
{ 2518, 3434, 4728, 6388, 8082, 9285, 13162, 18383, 19819, 20552},
{ 1726, 2383, 4090, 6303, 7805, 12845, 14612, 17608, 19269, 20181},
{ 2860, 3735, 4838, 6044, 7254, 8402, 14031, 16381, 18037, 19410},
{ 4247, 5993, 7952, 9792, 12342, 14653, 17527, 18774, 20831, 21699},
{ 3502, 4051, 5680, 6805, 8146, 11945, 16649, 17444, 20390, 21564},
{ 3151, 4893, 5899, 7198, 11418, 13073, 15124, 17673, 20520, 21861},
{ 3960, 4848, 5926, 7259, 8811, 10529, 15661, 16560, 18196, 20183},
{ 4499, 6604, 8036, 9251, 10804, 12627, 15880, 17512, 20020, 21046},
{ 4251, 5541, 6654, 8318, 9900, 11686, 15100, 17093, 20572, 21687},
{ 3769, 5327, 7865, 9360, 10684, 11818, 13660, 15366, 18733, 19882},
{ 3083, 3969, 6248, 8121, 9798, 10994, 12393, 13686, 17888, 19105},
{ 2731, 4670, 7063, 9201, 11346, 13735, 16875, 18797, 20787, 22360},
{ 1187, 2227, 4737, 7214, 9622, 12633, 15404, 17968, 20262, 23533},
{ 1911, 2477, 3915, 10098, 11616, 12955, 16223, 17138, 19270, 20729},
{ 1764, 2519, 3887, 6944, 9150, 12590, 16258, 16984, 17924, 18435},
{ 1400, 3674, 7131, 8718, 10688, 12508, 15708, 17711, 19720, 21068},
{ 2322, 3073, 4287, 8108, 9407, 10628, 15862, 16693, 19714, 21474},
{ 2630, 3339, 4758, 8360, 10274, 11333, 12880, 17374, 19221, 19936},
{ 1721, 2577, 5553, 7195, 8651, 10686, 15069, 16953, 18703, 19929}
};
/**
* second stage LSP codebook, high and low parts
(both 5-dimensional, with 32 entries (3.2.4 of G.729)
*/
static const int16_t cb_lsp_2nd[1<<VQ_2ND_BITS][10] = { /* (2.13) */
{ -435, -815, -742, 1033, -518, 582, -1201, 829, 86, 385},
{ -833, -891, 463, -8, -1251, 1450, 72, -231, 864, 661},
{-1021, 231, -306, 321, -220, -163, -526, -754, -1633, 267},
{ 57, -198, -339, -33, -1468, 573, 796, -169, -631, 816},
{ 171, -350, 294, 1660, 453, 519, 291, 159, -640, -1296},
{ -701, -842, -58, 950, 892, 1549, 715, 527, -714, -193},
{ 584, 31, -289, 356, -333, -457, 612, -283, -1381, -741},
{ -109, -808, 231, 77, -87, -344, 1341, 1087, -654, -569},
{ -859, 1236, 550, 854, 714, -543, -1752, -195, -98, -276},
{ -877, -954, -1248, -299, 212, -235, -728, 949, 1517, 895},
{ -77, 344, -620, 763, 413, 502, -362, -960, -483, 1386},
{ -314, -307, -256, -1260, -429, 450, -466, -108, 1010, 2223},
{ 711, 693, 521, 650, 1305, -28, -378, 744, -1005, 240},
{ -112, -271, -500, 946, 1733, 271, -15, 909, -259, 1688},
{ 575, -10, -468, -199, 1101, -1011, 581, -53, -747, 878},
{ 145, -285, -1280, -398, 36, -498, -1377, 18, -444, 1483},
{-1133, -835, 1350, 1284, -95, 1015, -222, 443, 372, -354},
{-1459, -1237, 416, -213, 466, 669, 659, 1640, 932, 534},
{ -15, 66, 468, 1019, -748, 1385, -182, -907, -721, -262},
{ -338, 148, 1445, 75, -760, 569, 1247, 337, 416, -121},
{ 389, 239, 1568, 981, 113, 369, -1003, -507, -587, -904},
{ -312, -98, 949, 31, 1104, 72, -141, 1465, 63, -785},
{ 1127, 584, 835, 277, -1159, 208, 301, -882, 117, -404},
{ 539, -114, 856, -493, 223, -912, 623, -76, 276, -440},
{ 2197, 2337, 1268, 670, 304, -267, -525, 140, 882, -139},
{-1596, 550, 801, -456, -56, -697, 865, 1060, 413, 446},
{ 1154, 593, -77, 1237, -31, 581, -1037, -895, 669, 297},
{ 397, 558, 203, -797, -919, 3, 692, -292, 1050, 782},
{ 334, 1475, 632, -80, 48, -1061, -484, 362, -597, -852},
{ -545, -330, -429, -680, 1133, -1182, -744, 1340, 262, 63},
{ 1320, 827, -398, -576, 341, -774, -483, -1247, -70, 98},
{ -163, 674, -11, -886, 531, -1125, -265, -242, 724, 934}
};
/**
* gain codebook (first stage), 8k mode (3.9.2 of G.729)
*/
static const int16_t cb_gain_1st_8k[1<<GC_1ST_IDX_BITS_8K][2] = { /*(0.14) (2.13) */
{ 3242 , 9949 },
{ 1551 , 2425 },
{ 2678 , 27162 },
{ 1921 , 9291 },
{ 1831 , 5022 },
{ 1 , 1516 },
{ 356 , 14756 },
{ 57 , 5404 },
};
/**
* gain codebook (second stage), 8k mode (3.9.2 of G.729)
*/
static const int16_t cb_gain_2nd_8k[1<<GC_2ND_IDX_BITS_8K][2] = { /*(1.14) (1.13) */
{ 5142 , 592 },
{ 17299 , 1861 },
{ 6160 , 2395 },
{ 16112 , 3392 },
{ 826 , 2005 },
{ 18973 , 5935 },
{ 1994 , 0 },
{ 15434 , 237 },
{ 10573 , 2966 },
{ 15132 , 4914 },
{ 11569 , 1196 },
{ 14194 , 1630 },
{ 8091 , 4861 },
{ 15161 , 14276 },
{ 9120 , 525 },
{ 13260 , 3256 },
};
/**
* 4th order Moving Average (MA) Predictor codebook (3.2.4 of G.729)
*/
static const int16_t cb_ma_predictor[2][MA_NP][10] = { /* (0.15) */
{
{ 8421, 9109, 9175, 8965, 9034, 9057, 8765, 8775, 9106, 8673},
{ 7018, 7189, 7638, 7307, 7444, 7379, 7038, 6956, 6930, 6868},
{ 5472, 4990, 5134, 5177, 5246, 5141, 5206, 5095, 4830, 5147},
{ 4056, 3031, 2614, 3024, 2916, 2713, 3309, 3237, 2857, 3473}
},
{
{ 7733, 7880, 8188, 8175, 8247, 8490, 8637, 8601, 8359, 7569},
{ 4210, 3031, 2552, 3473, 3876, 3853, 4184, 4154, 3909, 3968},
{ 3214, 1930, 1313, 2143, 2493, 2385, 2755, 2706, 2542, 2919},
{ 3024, 1592, 940, 1631, 1723, 1579, 2034, 2084, 1913, 2601}
}
};
static const int16_t cb_ma_predictor_sum[2][10] = { /* (0.15) */
{ 7798, 8447, 8205, 8293, 8126, 8477, 8447, 8703, 9043, 8604},
{14585, 18333, 19772, 17344, 16426, 16459, 15155, 15220, 16043, 15708}
};
/**
* initial LSP coefficients belongs to virtual frame preceding the
* first frame of the stream
*/
static const int16_t lsp_init[10]= { /* (0.15) */
30000, 26000, 21000, 15000, 8000, 0, -8000,-15000,-21000,-26000
};
#endif /* AVCODEC_G729DATA_H */

331
libavcodec/g729dec.c
View File

@ -1,331 +0,0 @@
/*
* G.729 decoder
* Copyright (c) 2008 Vladimir Voroshilov
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdlib.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <assert.h>
#include "avcodec.h"
#include "libavutil/avutil.h"
#include "get_bits.h"
#include "lsp.h"
#include "celp_math.h"
#include "acelp_filters.h"
#include "acelp_pitch_delay.h"
#include "acelp_vectors.h"
#include "g729data.h"
/**
* minimum quantized LSF value (3.2.4)
* 0.005 in Q13
*/
#define LSFQ_MIN 40
/**
* maximum quantized LSF value (3.2.4)
* 3.135 in Q13
*/
#define LSFQ_MAX 25681
/**
* minimum LSF distance (3.2.4)
* 0.0391 in Q13
*/
#define LSFQ_DIFF_MIN 321
/**
* minimum gain pitch value (3.8, Equation 47)
* 0.2 in (1.14)
*/
#define SHARP_MIN 3277
/**
* maximum gain pitch value (3.8, Equation 47)
* (EE) This does not comply with the specification.
* Specification says about 0.8, which should be
* 13107 in (1.14), but reference C code uses
* 13017 (equals to 0.7945) instead of it.
*/
#define SHARP_MAX 13017
/**
* subframe size
*/
#define SUBFRAME_SIZE 40
typedef struct {
uint8_t ac_index_bits[2]; ///< adaptive codebook index for second subframe (size in bits)
uint8_t parity_bit; ///< parity bit for pitch delay
uint8_t gc_1st_index_bits; ///< gain codebook (first stage) index (size in bits)
uint8_t gc_2nd_index_bits; ///< gain codebook (second stage) index (size in bits)
uint8_t fc_signs_bits; ///< number of pulses in fixed-codebook vector
uint8_t fc_indexes_bits; ///< size (in bits) of fixed-codebook index entry
} G729FormatDescription;
typedef struct {
int pitch_delay_int_prev; ///< integer part of previous subframe's pitch delay (4.1.3)
/// (2.13) LSP quantizer outputs
int16_t past_quantizer_output_buf[MA_NP + 1][10];
int16_t* past_quantizer_outputs[MA_NP + 1];
int16_t lsfq[10]; ///< (2.13) quantized LSF coefficients from previous frame
int16_t lsp_buf[2][10]; ///< (0.15) LSP coefficients (previous and current frames) (3.2.5)
int16_t *lsp[2]; ///< pointers to lsp_buf
} G729Context;
static const G729FormatDescription format_g729_8k = {
.ac_index_bits = {8,5},
.parity_bit = 1,
.gc_1st_index_bits = GC_1ST_IDX_BITS_8K,
.gc_2nd_index_bits = GC_2ND_IDX_BITS_8K,
.fc_signs_bits = 4,
.fc_indexes_bits = 13,
};
static const G729FormatDescription format_g729d_6k4 = {
.ac_index_bits = {8,4},
.parity_bit = 0,
.gc_1st_index_bits = GC_1ST_IDX_BITS_6K4,
.gc_2nd_index_bits = GC_2ND_IDX_BITS_6K4,
.fc_signs_bits = 2,
.fc_indexes_bits = 9,
};
/**
* @brief pseudo random number generator
*/
static inline uint16_t g729_prng(uint16_t value)
{
return 31821 * value + 13849;
}
/**
* Get parity bit of bit 2..7
*/
static inline int get_parity(uint8_t value)
{
return (0x6996966996696996ULL >> (value >> 2)) & 1;
}
static void lsf_decode(int16_t* lsfq, int16_t* past_quantizer_outputs[MA_NP + 1],
int16_t ma_predictor,
int16_t vq_1st, int16_t vq_2nd_low, int16_t vq_2nd_high)
{
int i,j;
static const uint8_t min_distance[2]={10, 5}; //(2.13)
int16_t* quantizer_output = past_quantizer_outputs[MA_NP];
for (i = 0; i < 5; i++) {
quantizer_output[i] = cb_lsp_1st[vq_1st][i ] + cb_lsp_2nd[vq_2nd_low ][i ];
quantizer_output[i + 5] = cb_lsp_1st[vq_1st][i + 5] + cb_lsp_2nd[vq_2nd_high][i + 5];
}
for (j = 0; j < 2; j++) {
for (i = 1; i < 10; i++) {
int diff = (quantizer_output[i - 1] - quantizer_output[i] + min_distance[j]) >> 1;
if (diff > 0) {
quantizer_output[i - 1] -= diff;
quantizer_output[i ] += diff;
}
}
}
for (i = 0; i < 10; i++) {
int sum = quantizer_output[i] * cb_ma_predictor_sum[ma_predictor][i];
for (j = 0; j < MA_NP; j++)
sum += past_quantizer_outputs[j][i] * cb_ma_predictor[ma_predictor][j][i];
lsfq[i] = sum >> 15;
}
/* Rotate past_quantizer_outputs. */
memmove(past_quantizer_outputs + 1, past_quantizer_outputs, MA_NP * sizeof(int16_t*));
past_quantizer_outputs[0] = quantizer_output;
ff_acelp_reorder_lsf(lsfq, LSFQ_DIFF_MIN, LSFQ_MIN, LSFQ_MAX, 10);
}
static av_cold int decoder_init(AVCodecContext * avctx)
{
G729Context* ctx = avctx->priv_data;
int i,k;
if (avctx->channels != 1) {
av_log(avctx, AV_LOG_ERROR, "Only mono sound is supported (requested channels: %d).\n", avctx->channels);
return AVERROR(EINVAL);
}
/* Both 8kbit/s and 6.4kbit/s modes uses two subframes per frame. */
avctx->frame_size = SUBFRAME_SIZE << 1;
for (k = 0; k < MA_NP + 1; k++) {
ctx->past_quantizer_outputs[k] = ctx->past_quantizer_output_buf[k];
for (i = 1; i < 11; i++)
ctx->past_quantizer_outputs[k][i - 1] = (18717 * i) >> 3;
}
ctx->lsp[0] = ctx->lsp_buf[0];
ctx->lsp[1] = ctx->lsp_buf[1];
memcpy(ctx->lsp[0], lsp_init, 10 * sizeof(int16_t));
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int16_t *out_frame = data;
GetBitContext gb;
G729FormatDescription format;
int frame_erasure = 0; ///< frame erasure detected during decoding
int bad_pitch = 0; ///< parity check failed
int i;
G729Context *ctx = avctx->priv_data;
int16_t lp[2][11]; // (3.12)
uint8_t ma_predictor; ///< switched MA predictor of LSP quantizer
uint8_t quantizer_1st; ///< first stage vector of quantizer
uint8_t quantizer_2nd_lo; ///< second stage lower vector of quantizer (size in bits)
uint8_t quantizer_2nd_hi; ///< second stage higher vector of quantizer (size in bits)
int pitch_delay_int; // pitch delay, integer part
int pitch_delay_3x; // pitch delay, multiplied by 3
if (*data_size < SUBFRAME_SIZE << 2) {
av_log(avctx, AV_LOG_ERROR, "Error processing packet: output buffer too small\n");
return AVERROR(EIO);
}
if (buf_size == 10) {
format = format_g729_8k;
av_log(avctx, AV_LOG_DEBUG, "Packet type: %s\n", "G.729 @ 8kbit/s");
} else if (buf_size == 8) {
format = format_g729d_6k4;
av_log(avctx, AV_LOG_DEBUG, "Packet type: %s\n", "G.729D @ 6.4kbit/s");
} else {
av_log(avctx, AV_LOG_ERROR, "Packet size %d is unknown.\n", buf_size);
return AVERROR_INVALIDDATA;
}
for (i=0; i < buf_size; i++)
frame_erasure |= buf[i];
frame_erasure = !frame_erasure;
init_get_bits(&gb, buf, buf_size);
ma_predictor = get_bits(&gb, 1);
quantizer_1st = get_bits(&gb, VQ_1ST_BITS);
quantizer_2nd_lo = get_bits(&gb, VQ_2ND_BITS);
quantizer_2nd_hi = get_bits(&gb, VQ_2ND_BITS);
lsf_decode(ctx->lsfq, ctx->past_quantizer_outputs,
ma_predictor,
quantizer_1st, quantizer_2nd_lo, quantizer_2nd_hi);
ff_acelp_lsf2lsp(ctx->lsp[1], ctx->lsfq, 10);
ff_acelp_lp_decode(&lp[0][0], &lp[1][0], ctx->lsp[1], ctx->lsp[0], 10);
FFSWAP(int16_t*, ctx->lsp[1], ctx->lsp[0]);
for (i = 0; i < 2; i++) {
uint8_t ac_index; ///< adaptive codebook index
uint8_t pulses_signs; ///< fixed-codebook vector pulse signs
int fc_indexes; ///< fixed-codebook indexes
uint8_t gc_1st_index; ///< gain codebook (first stage) index
uint8_t gc_2nd_index; ///< gain codebook (second stage) index
ac_index = get_bits(&gb, format.ac_index_bits[i]);
if(!i && format.parity_bit)
bad_pitch = get_parity(ac_index) == get_bits1(&gb);
fc_indexes = get_bits(&gb, format.fc_indexes_bits);
pulses_signs = get_bits(&gb, format.fc_signs_bits);
gc_1st_index = get_bits(&gb, format.gc_1st_index_bits);
gc_2nd_index = get_bits(&gb, format.gc_2nd_index_bits);
if(!i) {
if (bad_pitch)
pitch_delay_3x = 3 * ctx->pitch_delay_int_prev;
else
pitch_delay_3x = ff_acelp_decode_8bit_to_1st_delay3(ac_index);
} else {
int pitch_delay_min = av_clip(ctx->pitch_delay_int_prev - 5,
PITCH_DELAY_MIN, PITCH_DELAY_MAX - 9);
if(packet_type == FORMAT_G729D_6K4)
pitch_delay_3x = ff_acelp_decode_4bit_to_2nd_delay3(ac_index, pitch_delay_min);
else
pitch_delay_3x = ff_acelp_decode_5_6_bit_to_2nd_delay3(ac_index, pitch_delay_min);
}
/* Round pitch delay to nearest (used everywhere except ff_acelp_interpolate). */
pitch_delay_int = (pitch_delay_3x + 1) / 3;
ff_acelp_weighted_vector_sum(fc + pitch_delay_int,
fc + pitch_delay_int,
fc, 1 << 14,
av_clip(ctx->gain_pitch, SHARP_MIN, SHARP_MAX),
0, 14,
SUBFRAME_SIZE - pitch_delay_int);
if (frame_erasure) {
ctx->gain_pitch = (29491 * ctx->gain_pitch) >> 15; // 0.90 (0.15)
ctx->gain_code = ( 2007 * ctx->gain_code ) >> 11; // 0.98 (0.11)
gain_corr_factor = 0;
} else {
ctx->gain_pitch = cb_gain_1st_8k[gc_1st_index][0] +
cb_gain_2nd_8k[gc_2nd_index][0];
gain_corr_factor = cb_gain_1st_8k[gc_1st_index][1] +
cb_gain_2nd_8k[gc_2nd_index][1];
ff_acelp_weighted_vector_sum(ctx->exc + i * SUBFRAME_SIZE,
ctx->exc + i * SUBFRAME_SIZE, fc,
(!voicing && frame_erasure) ? 0 : ctx->gain_pitch,
( voicing && frame_erasure) ? 0 : ctx->gain_code,
1 << 13, 14, SUBFRAME_SIZE);
ctx->pitch_delay_int_prev = pitch_delay_int;
}
*data_size = SUBFRAME_SIZE << 2;
return buf_size;
}
AVCodec ff_g729_decoder =
{
"g729",
AVMEDIA_TYPE_AUDIO,
CODEC_ID_G729,
sizeof(G729Context),
decoder_init,
NULL,
NULL,
decode_frame,
.long_name = NULL_IF_CONFIG_SMALL("G.729"),
};