mirror of
https://github.com/Rockbox/rockbox.git
synced 2026-10-09 23:53:28 -04:00
fc1d445d69
b7170e03c4 added window_lookup_mid, 512 bytes, to IRAM on every
target. On the targets with 48KB of IRAM for a codec that left
the ATRAC3 codecs 48 bytes too large to link (iPod Color and the
other PP502x players with 96KB of IRAM).
Put the table in IRAM only on the targets with more, like the
decoder's other large tables. Nothing changes there.
Built for iPod Color, where the two codecs now have 476 bytes of
IRAM to spare, and for the iriver H120.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
137 lines
7.5 KiB
C
137 lines
7.5 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2009 Michael Giacomelli
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* Copyright (C) 2009 Mohamed Tarek
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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/* tables for the scalefactor decoding */
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/* scaled by 2^31*/
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static const int32_t iMaxQuant_fix[8] ICONST_ATTR = {
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0x0, 0x55555580, 0x33333340, 0x24924940, 0x1c71c720, 0x11111120, 0x8421080,
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0x4104108
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};
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/* scaled by 2^16 */
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static const int32_t SFTable_fixed[64] ICONST_ATTR = {
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0x00000800, 0x00000a14, 0x00000cb3, 0x00001000, 0x00001429, 0x00001966,
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0x00002000, 0x00002851, 0x000032cc, 0x00004000, 0x000050a3, 0x00006598,
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0x00008000, 0x0000a145, 0x0000cb30, 0x00010000, 0x0001428a, 0x00019660,
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0x00020000, 0x00028514, 0x00032cc0, 0x00040000, 0x00050a29, 0x00065980,
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0x00080000, 0x000a1452, 0x000cb2ff, 0x00100000, 0x001428a3, 0x001965ff,
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0x00200000, 0x00285146, 0x0032cbfd, 0x00400000, 0x0050a28c, 0x006597fb,
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0x00800000, 0x00a14518, 0x00cb2ff5, 0x01000000, 0x01428a30, 0x01965fea,
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0x02000000, 0x02851460, 0x032cbfd4, 0x04000000, 0x050a28c0, 0x06597fa8,
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0x08000000, 0x0a145180, 0x0cb2ff50, 0x10000000, 0x1428a300, 0x1965fea0,
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0x20000000, 0x28514600, 0x32cbfd40, 0x40000000, 0x50a28c00, 0x6597fa80,
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0x80000000, 0x80000000, 0x80000000, 0x80000000,
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};
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/* transform data */
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/* floating point values scaled by 2^31 */
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static const int32_t qmf_48tap_half_fix[24] = {
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0xffff855e, 0xfffcfbca, 0xfffe28eb, 0x0009de6b, 0x0007f028, 0xffe40d08,
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0xffeef140, 0x0042a692, 0x0019ab1f, 0xff75dec7, 0xffe738f5, 0x0100e928,
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0xfffdfedf, 0xfe478b84, 0x0050b279, 0x02c83f88, 0xff005ad7, 0xfba2ee80,
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0x02685970, 0x06f42798, 0xfa6b6f10, 0xf3475f80, 0x10e7f7c0, 0x3b6c44c0
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};
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/* mdct window scaled by 2^31 */
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/* Remark: The preceding sign corrects the sign of the hexadecimal values */
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static const int32_t window_lookup[128] ICONST_ATTR MEM_ALIGN_ATTR = {
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-0xffffb10c, -0xfffd394b, -0xfff8494f, -0xfff0e025, -0xffe6fc5f, -0xffda9c15,
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-0xffcbbce6, -0xffba5bf4, -0xffa675e8, -0xff9006f0, -0xff770aba, -0xff5b7c7e,
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-0xff3d56f2, -0xff1c9452, -0xfef92e59, -0xfed31e45, -0xfeaa5cd5, -0xfe7ee247,
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-0xfe50a657, -0xfe1fa041, -0xfdebc6c1, -0xfdb5100d, -0xfd7b71d5, -0xfd3ee149,
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-0xfcff5311, -0xfcbcbb49, -0xfc770d99, -0xfc2e3d15, -0xfbe23c39, -0xfb92fd29,
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-0xfb407141, -0xfaea8989, -0xfa913661, -0xfa3467b1, -0xf9d40cd9, -0xf9701499,
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-0xf9086d41, -0xf89d04a9, -0xf82dc7f1, -0xf7baa3e1, -0xf74384b1, -0xf6c85611,
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-0xf6490321, -0xf5c576b1, -0xf53d9b21, -0xf4b15a01, -0xf4209ce1, -0xf38b4c71,
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-0xf2f15171, -0xf2529411, -0xf1aefbf1, -0xf10670a1, -0xf058d941, -0xefa61cc1,
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-0xeeee21c1, -0xee30cec1, -0xed6e0a41, -0xeca5ba61, -0xebd7c5c1, -0xeb041241,
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-0xea2a8601, -0xe94b0861, -0xe8657f61, -0xe779d241, -0xe687e861, -0xe58fa9e1,
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-0xe490fec1, -0xe38bd101, -0xe28009c1, -0xe16d93e1, -0xe0545ba1, -0xdf344dc1,
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-0xde0d5881, -0xdcdf6bc1, -0xdbaa7801, -0xda6e70c1, -0xd92b4ac1, -0xd7e0fc81,
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-0xd68f7ec1, -0xd536cd41, -0xd3d6e5c1, -0xd26fc901, -0xd10179c1, -0xcf8bff41,
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-0xce0f6301, -0xcc8bb241, -0xcb00fdc1, -0xc96f5b01, -0xc7d6e141, -0xc637af41,
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-0xc491e4c1, -0xc2e5a801, -0xc1332401, -0xbf7a8701, -0xbdbc0681, -0xbbf7da01,
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-0xba2e4181, -0xb85f7f81, -0xb68bde01, -0xb4b3a981, -0xb2d73781, -0xb0f6df01,
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-0xaf12ff01, -0xad2bfa81, -0xab423981, -0xa9562981, -0xa7683c01, -0xa578e701,
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-0xa388a681, -0xa197f801, -0x9fa75e81, -0x9db75f01, -0x9bc88201, -0x99db5301,
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-0x97f06001, -0x96083601, -0x94236601, -0x92427f81, -0x90661481, -0x8e8eb481,
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-0x8cbced01, -0x8af14d81, -0x892c5f81, -0x876eab01, -0x85b8b681, -0x840b0301,
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-0x82660c01, -0x80ca4a01,
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};
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/* The window above is the first 128 points of the 512 point mdct window.
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* Points 128..255 are these values plus one, scaled by 2^31; they rise to
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* 1.207 and fall back to 1. The second half of the window mirrors the
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* first. In IRAM only where there is room: with it the codec does not fit
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* the 48KB of the smaller targets. */
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static const int32_t window_lookup_mid[128] ICONST_ATTR_LARGE_IRAM MEM_ALIGN_ATTR = {
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0x00c7d1c8, 0x024fd962, 0x03cd6738, 0x05401bc8, 0x06a79e95, 0x08039e75,
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0x0953d1d1, 0x0a97f6df, 0x0bcfd3c6, 0x0cfb36c3, 0x0e19f636, 0x0f2bf0a8,
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0x10310cc9, 0x11293955, 0x12146d01, 0x12f2a64e, 0x13c3eb59, 0x148849a0,
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0x153fd5c0, 0x15eaab2c, 0x1688ebd9, 0x171abfeb, 0x17a05559, 0x1819df8c,
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0x188796ff, 0x18e9b8db, 0x1940868e, 0x198c456d, 0x19cd3e43, 0x1a03bcf6,
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0x1a301021, 0x1a5288af, 0x1a6b7984, 0x1a7b371a, 0x1a821730, 0x1a807072,
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0x1a769a2c, 0x1a64ebfc, 0x1a4bbd8d, 0x1a2b6653, 0x1a043d52, 0x19d698de,
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0x19a2ce6d, 0x19693261, 0x192a17e5, 0x18e5d0be, 0x189cad2d, 0x184efbcf,
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0x17fd0985, 0x17a72158, 0x174d8c6b, 0x16f091e8, 0x169076f2, 0x162d7ea1,
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0x15c7e9f4, 0x155ff7cf, 0x14f5e4fc, 0x1489ec23, 0x141c45d4, 0x13ad2886,
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0x133cc89d, 0x12cb5870, 0x12590851, 0x11e60697, 0x11727fa4, 0x10fe9df7,
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0x108a8a2e, 0x10166b1a, 0x0fa265c6, 0x0f2e9d86, 0x0ebb3404, 0x0e48494e,
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0x0dd5fbe2, 0x0d6468bc, 0x0cf3ab63, 0x0c83ddf9, 0x0c151945, 0x0ba774c2,
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0x0b3b06af, 0x0acfe414, 0x0a6620d7, 0x09fdcfc5, 0x0997029e, 0x0931ca20,
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0x08ce3615, 0x086c555d, 0x080c35f8, 0x07ade513, 0x07516f11, 0x06f6df92,
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0x069e4182, 0x06479f20, 0x05f30203, 0x05a0732a, 0x054ffafe, 0x0501a15d,
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0x04b56d9f, 0x046b66a1, 0x042392c9, 0x03ddf80e, 0x039a9bfc, 0x035983bd,
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0x031ab41f, 0x02de3196, 0x02a40042, 0x026c23f9, 0x0236a043, 0x02037867,
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0x01d2af6a, 0x01a44813, 0x017844f1, 0x014ea85c, 0x0127747d, 0x0102ab49,
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0x00e04e8c, 0x00c05fe5, 0x00a2e0cf, 0x0087d29c, 0x006f367d, 0x00590d81,
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0x00455897, 0x00341890, 0x00254e20, 0x0018f9df, 0x000f1c4a, 0x0007b5c4,
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0x0002c697, 0x00004ef5,
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};
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/* Gain tables scaled by 2^16 */
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static const int32_t gain_tab2[31] ICONST_ATTR = {
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0x0003ab03, 0x00035d14, 0x0003159d, 0x0002d414, 0x000297fb, 0x000260e0,
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0x00022e57, 0x00020000, 0x0001d582, 0x0001ae8a, 0x00018ace, 0x00016a0a,
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0x00014bfe, 0x00013070, 0x0001172c, 0x00010000, 0x0000eac1, 0x0000d745,
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0x0000c567, 0x0000b505, 0x0000a5ff, 0x00009838, 0x00008b96, 0x00008000,
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0x00007560, 0x00006ba2, 0x000062b4, 0x00005a82, 0x000052ff, 0x00004c1c,
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0x000045cb,
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};
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/* Joint-Stereo related tables, scaled by 2^16 */
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static const int32_t matrixCoeffs_fix[8] ICONST_ATTR = {
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0x00000000, 0x00020000, 0x00020000, 0x00020000,
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0x00000000, 0x00000000, 0x00010000, 0x00010000,
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};
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/* channelWeights0[i] = ONE_16 * ((i & 7)/7) */
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static const int32_t channelWeights0[8] = {
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0x00000000, 0x00002492, 0x00004925, 0x00006DB7,
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0x00009249, 0x0000B6DB, 0x0000DB6D, 0x00010000,
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};
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/* channelWeights1[i] = ONE_16 * sqrt(2-channelWeights0^2) */
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static const int32_t channelWeights1[8] = {
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0x00016A0A, 0x00016830, 0x00016293, 0x00015904,
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0x00014B2B, 0x00013877, 0x00011FF7, 0x00010000,
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};
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