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/*
* This file is part of AtracDEnc.
*
* AtracDEnc 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.
*
* AtracDEnc 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 AtracDEnc; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "at3p_tables.h"
#include "ff/atrac3plus_data.h"
#include <iostream>
namespace NAtracDEnc {
namespace NAt3p {
static void __attribute__ ((noinline)) GenHuffmanEncTable(const uint8_t *cb, const uint8_t *xlat, uint16_t outLen, TVlcElement* out)
{
uint16_t index = 0;
uint16_t code = 0;
for (int b = 1; b <= 12; b++) {
for (int i = *cb++; i > 0; i--) {
uint8_t val = xlat[index];
if (val > outLen) {
throw std::runtime_error("encoded value out of range, invalid haffman table");
}
TVlcElement* cur = out + val;
cur->Code = code;
cur->Len = b;
index++;
code++;
}
code <<= 1;
}
}
template<typename T>
void GenHuffmanEncTable(const uint8_t *cb, const uint8_t *xlat, T& out)
{
GenHuffmanEncTable(cb, xlat, out.size(), out.data());
}
THuffTables::THuffTables()
{
GenHuffmanEncTable(&atrac3p_tone_cbs[0][0], &atrac3p_tone_xlats[0], NumToneBands);
}
} // namespace NAt3p
} // namespace NAtracDEnc
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