/*
* mpeg audio layer 2 tables. Most of them come from the mpeg audio
* specification.
- *
+ *
* Copyright (c) 2000, 2001 Fabrice Bellard.
*
* The licence of this code is contained in file LICENCE found in the
- * same archive
+ * same archive
+ */
+
+/**
+ * @file mpegaudiotab.h
+ * mpeg audio layer 2 tables.
+ * Most of them come from the mpeg audio specification.
*/
#define SQRT2 1.41421356237309514547
static const int costab32[30] = {
FIX(0.54119610014619701222),
FIX(1.3065629648763763537),
-
+
FIX(0.50979557910415917998),
FIX(2.5629154477415054814),
FIX(0.89997622313641556513),
FIX(0.60134488693504528634),
-
+
FIX(0.5024192861881556782),
FIX(5.1011486186891552563),
FIX(0.78815462345125020249),
FIX(1.0606776859903470633),
FIX(1.7224470982383341955),
FIX(0.52249861493968885462),
-
+
FIX(10.19000812354803287),
FIX(0.674808341455005678),
FIX(1.1694399334328846596),
};
-static INT16 filter_bank[512];
+static int16_t filter_bank[512];
static int scale_factor_table[64];
#ifdef USE_FLOATS
static float scale_factor_inv_table[64];
#else
-static INT8 scale_factor_shift[64];
+static int8_t scale_factor_shift[64];
static unsigned short scale_factor_mult[64];
#endif
static unsigned char scale_diff_table[128];
static unsigned short total_quant_bits[17];
/* signal to noise ratio of each quantification step (could be
- computed from quant_steps[]). The values are dB multiplied by 10
+ computed from quant_steps[]). The values are dB multiplied by 10
*/
-static unsigned short quant_snr[17] = {
+static const unsigned short quant_snr[17] = {
70, 110, 160, 208,
253, 316, 378, 439,
- 499, 559, 620, 680,
- 740, 800, 861, 920,
+ 499, 559, 620, 680,
+ 740, 800, 861, 920,
980
};