-/* tables taken directly from AC3 spec */
+/*
+ * AC3 tables
+ * copyright (c) 2001 Fabrice Bellard
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file ac3tab.h
+ * tables taken directly from AC3 spec.
+ */
/* possible frequencies */
-const uint16_t ac3_freqs[3] = { 48000, 44100, 32000 };
+static const uint16_t ac3_freqs[3] = { 48000, 44100, 32000 };
/* possible bitrates */
-const uint16_t ac3_bitratetab[19] = {
- 32, 40, 48, 56, 64, 80, 96, 112, 128,
- 160, 192, 224, 256, 320, 384, 448, 512, 576, 640
+static const uint16_t ac3_bitratetab[19] = {
+ 32, 40, 48, 56, 64, 80, 96, 112, 128,
+ 160, 192, 224, 256, 320, 384, 448, 512, 576, 640
};
/* AC3 MDCT window */
/* MDCT window */
-const int16_t ac3_window[256] = {
+static const int16_t ac3_window[256] = {
4, 7, 12, 16, 21, 28, 34, 42,
51, 61, 72, 84, 97, 111, 127, 145,
164, 184, 207, 231, 257, 285, 315, 347,
32760,32761,32762,32763,32764,32764,32765,32765,
32766,32766,32766,32766,32767,32767,32767,32767,
32767,32767,32767,32767,32767,32767,32767,32767,
-32767,32767,32767,32767,32767,32767,32767,32767,
+32767,32767,32767,32767,32767,32767,32767,32767,
};
static uint8_t masktab[253];
};
static const uint8_t baptab[64]= {
- 0, 1, 1, 1, 1, 1, 2, 2, 3, 3,
- 3, 4, 4, 5, 5, 6, 6, 6, 6, 7,
- 7, 7, 7, 8, 8, 8, 8, 9, 9, 9,
- 9, 10, 10, 10, 10, 11, 11, 11, 11, 12,
- 12, 12, 12, 13, 13, 13, 13, 14, 14, 14,
- 14, 14, 14, 14, 14, 15, 15, 15, 15, 15,
+ 0, 1, 1, 1, 1, 1, 2, 2, 3, 3,
+ 3, 4, 4, 5, 5, 6, 6, 6, 6, 7,
+ 7, 7, 7, 8, 8, 8, 8, 9, 9, 9,
+ 9, 10, 10, 10, 10, 11, 11, 11, 11, 12,
+ 12, 12, 12, 13, 13, 13, 13, 14, 14, 14,
+ 14, 14, 14, 14, 14, 15, 15, 15, 15, 15,
15, 15, 15, 15,
};
-const uint8_t sdecaytab[4]={
+static const uint8_t sdecaytab[4]={
0x0f, 0x11, 0x13, 0x15,
};
-const uint8_t fdecaytab[4]={
- 0x3f, 0x53, 0x67, 0x7b,
+static const uint8_t fdecaytab[4]={
+ 0x3f, 0x53, 0x67, 0x7b,
};
-const uint16_t sgaintab[4]= {
+static const uint16_t sgaintab[4]= {
0x540, 0x4d8, 0x478, 0x410,
};
-const uint16_t dbkneetab[4]= {
+static const uint16_t dbkneetab[4]= {
0x000, 0x700, 0x900, 0xb00,
};
-const uint16_t floortab[8]= {
+static const int16_t floortab[8]= {
0x2f0, 0x2b0, 0x270, 0x230, 0x1f0, 0x170, 0x0f0, 0xf800,
};
-const uint16_t fgaintab[8]= {
+static const uint16_t fgaintab[8]= {
0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380, 0x400,
};
static const uint8_t bndsz[50]={
- 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, 1, 1, 3, 3, 3, 3, 3, 3,
- 3, 6, 6, 6, 6, 6, 6, 12, 12, 12, 12, 24, 24, 24, 24, 24
+ 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, 1, 1, 3, 3, 3, 3, 3, 3,
+ 3, 6, 6, 6, 6, 6, 6, 12, 12, 12, 12, 24, 24, 24, 24, 24
};
-static uint8_t bndtab[51];
+static uint8_t bndtab[51];
/* fft & mdct sin cos tables */
static int16_t costab[64];
static int16_t fft_rev[512];
static int16_t xcos1[128];
static int16_t xsin1[128];
-
-static uint16_t crc_table[256];