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+/************************* MPEG-2 NBC Audio Decoder **************************
+ * *
+"This software module was originally developed by
+AT&T, Dolby Laboratories, Fraunhofer Gesellschaft IIS and edited by
+Yoshiaki Oikawa (Sony Corporation)
+,Mitsuyuki Hatanaka (Sony Corporation),
+in the course of development of the MPEG-2 NBC/MPEG-4 Audio standard ISO/IEC 13818-7,
+14496-1,2 and 3. This software module is an implementation of a part of one or more
+MPEG-2 NBC/MPEG-4 Audio tools as specified by the MPEG-2 NBC/MPEG-4
+Audio standard. ISO/IEC gives users of the MPEG-2 NBC/MPEG-4 Audio
+standards free license to this software module or modifications thereof for use in
+hardware or software products claiming conformance to the MPEG-2 NBC/MPEG-4
+Audio standards. Those intending to use this software module in hardware or
+software products are advised that this use may infringe existing patents.
+The original developer of this software module and his/her company, the subsequent
+editors and their companies, and ISO/IEC have no liability for use of this software
+module or modifications thereof in an implementation. Copyright is not released for
+non MPEG-2 NBC/MPEG-4 Audio conforming products.The original developer
+retains full right to use the code for his/her own purpose, assign or donate the
+code to a third party and to inhibit third party from using the code for non
+MPEG-2 NBC/MPEG-4 Audio conforming products. This copyright notice must
+be included in all copies or derivative works."
+Copyright(c)1996.
+ * *
+ ****************************************************************************/
+
+#include "all.h"
+
+Hcb book[NSPECBOOKS+2];
+int sfbwidth128[(1<<LEN_MAX_SFBS)];
+
+const int SampleRates[] = {
+ 96000,88200,64000,48000,44100,32000,24000,22050,16000,12000,11025,8000,7350,0,0,0
+};
+
+/* Returns the sample rate index */
+int get_sr_index(unsigned int sampleRate)
+{
+ if (92017 <= sampleRate) return 0;
+ if (75132 <= sampleRate) return 1;
+ if (55426 <= sampleRate) return 2;
+ if (46009 <= sampleRate) return 3;
+ if (37566 <= sampleRate) return 4;
+ if (27713 <= sampleRate) return 5;
+ if (23004 <= sampleRate) return 6;
+ if (18783 <= sampleRate) return 7;
+ if (13856 <= sampleRate) return 8;
+ if (11502 <= sampleRate) return 9;
+ if (9391 <= sampleRate) return 10;
+
+ return 11;
+}
+static int sfb_96_1024[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 32, 36, 40, 44, 48, 52, 56,
+ 64, 72, 80, 88, 96, 108, 120,
+ 132, 144, 156, 172, 188, 212, 240,
+ 276, 320, 384, 448, 512, 576, 640,
+ 704, 768, 832, 896, 960, 1024
+}; /* 41 scfbands */
+
+static int sfb_96_128[] =
+{
+ 4, 8, 12, 16, 20, 24, 32,
+ 40, 48, 64, 92, 128
+}; /* 12 scfbands */
+
+static int sfb_64_1024[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 32, 36, 40, 44, 48, 52, 56,
+ 64, 72, 80, 88, 100, 112, 124,
+ 140, 156, 172, 192, 216, 240, 268,
+ 304, 344, 384, 424, 464, 504, 544,
+ 584, 624, 664, 704, 744, 784, 824,
+ 864, 904, 944, 984, 1024
+}; /* 41 scfbands 47 */
+
+static int sfb_64_128[] =
+{
+ 4, 8, 12, 16, 20, 24, 32,
+ 40, 48, 64, 92, 128
+}; /* 12 scfbands */
+
+
+static int sfb_48_1024[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 32, 36, 40, 48, 56, 64, 72,
+ 80, 88, 96, 108, 120, 132, 144,
+ 160, 176, 196, 216, 240, 264, 292,
+ 320, 352, 384, 416, 448, 480, 512,
+ 544, 576, 608, 640, 672, 704, 736,
+ 768, 800, 832, 864, 896, 928, 1024
+};
+
+static int sfb_48_128[] =
+{
+ 4, 8, 12, 16, 20, 28, 36,
+ 44, 56, 68, 80, 96, 112, 128
+};
+
+static int sfb_32_1024[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 32, 36, 40, 48, 56, 64, 72,
+ 80, 88, 96, 108, 120, 132, 144,
+ 160, 176, 196, 216, 240, 264, 292,
+ 320, 352, 384, 416, 448, 480, 512,
+ 544, 576, 608, 640, 672, 704, 736,
+ 768, 800, 832, 864, 896, 928, 960,
+ 992, 1024
+};
+
+static int sfb_24_1024[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 32, 36, 40, 44, 52, 60, 68,
+ 76, 84, 92, 100, 108, 116, 124,
+ 136, 148, 160, 172, 188, 204, 220,
+ 240, 260, 284, 308, 336, 364, 396,
+ 432, 468, 508, 552, 600, 652, 704,
+ 768, 832, 896, 960, 1024
+}; /* 47 scfbands */
+
+static int sfb_24_128[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 36, 44, 52, 64, 76, 92, 108,
+ 128
+}; /* 15 scfbands */
+
+static int sfb_16_1024[] =
+{
+ 8, 16, 24, 32, 40, 48, 56,
+ 64, 72, 80, 88, 100, 112, 124,
+ 136, 148, 160, 172, 184, 196, 212,
+ 228, 244, 260, 280, 300, 320, 344,
+ 368, 396, 424, 456, 492, 532, 572,
+ 616, 664, 716, 772, 832, 896, 960,
+ 1024
+}; /* 43 scfbands */
+
+static int sfb_16_128[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 32, 40, 48, 60, 72, 88, 108,
+ 128
+}; /* 15 scfbands */
+
+static int sfb_8_1024[] =
+{
+ 12, 24, 36, 48, 60, 72, 84,
+ 96, 108, 120, 132, 144, 156, 172,
+ 188, 204, 220, 236, 252, 268, 288,
+ 308, 328, 348, 372, 396, 420, 448,
+ 476, 508, 544, 580, 620, 664, 712,
+ 764, 820, 880, 944, 1024
+}; /* 40 scfbands */
+
+static int sfb_8_128[] =
+{
+ 4, 8, 12, 16, 20, 24, 28,
+ 36, 44, 52, 60, 72, 88, 108,
+ 128
+}; /* 15 scfbands */
+
+SR_Info samp_rate_info[(1<<LEN_SAMP_IDX)] =
+{
+ /* sampling_frequency, #long sfb, long sfb, #short sfb, short sfb */
+ /* samp_rate, nsfb1024, SFbands1024, nsfb128, SFbands128 */
+ {96000, 41, sfb_96_1024, 12, sfb_96_128}, /* 96000 */
+ {88200, 41, sfb_96_1024, 12, sfb_96_128}, /* 88200 */
+ {64000, 47, sfb_64_1024, 12, sfb_64_128}, /* 64000 */
+ {48000, 49, sfb_48_1024, 14, sfb_48_128}, /* 48000 */
+ {44100, 49, sfb_48_1024, 14, sfb_48_128}, /* 44100 */
+ {32000, 51, sfb_32_1024, 14, sfb_48_128}, /* 32000 */
+ {24000, 47, sfb_24_1024, 15, sfb_24_128}, /* 24000 */
+ {22050, 47, sfb_24_1024, 15, sfb_24_128}, /* 22050 */
+ {16000, 43, sfb_16_1024, 15, sfb_16_128}, /* 16000 */
+ {12000, 43, sfb_16_1024, 15, sfb_16_128}, /* 12000 */
+ {11025, 43, sfb_16_1024, 15, sfb_16_128}, /* 11025 */
+ {8000, 40, sfb_8_1024, 15, sfb_8_128 }, /* 8000 */
+ {0,0,0,0,0},
+ {0,0,0,0,0},
+ {0,0,0,0,0},
+ {0,0,0,0,0}
+};
+
+int tns_max_bands_tbl[(1<<LEN_SAMP_IDX)][4] =
+{
+ /* entry for each sampling rate
+ * 1 Main/LC long window
+ * 2 Main/LC short window
+ * 3 SSR long window
+ * 4 SSR short window
+ */
+ {31, 9, 28, 7}, /* 96000 */
+ {31, 9, 28, 7}, /* 88200 */
+ {34, 10, 27, 7}, /* 64000 */
+ {40, 14, 26, 6}, /* 48000 */
+ {42, 14, 26, 6}, /* 44100 */
+ {51, 14, 26, 6}, /* 32000 */
+ {46, 14, 29, 7}, /* 24000 */
+ {46, 14, 29, 7}, /* 22050 */
+ {42, 14, 23, 8}, /* 16000 */
+ {42, 14, 23, 8}, /* 12000 */
+ {42, 14, 23, 8}, /* 11025 */
+ {39, 14, 19, 7}, /* 8000 */
+ {0,0,0,0},
+ {0,0,0,0},
+ {0,0,0,0},
+ {0,0,0,0}
+};
+
+int pred_max_bands_tbl[(1<<LEN_SAMP_IDX)] = {
+ 33, /* 96000 */
+ 33, /* 88200 */
+ 38, /* 64000 */
+ 40, /* 48000 */
+ 40, /* 44100 */
+ 40, /* 32000 */
+ 41, /* 24000 */
+ 41, /* 22050 */
+ 37, /* 16000 */
+ 37, /* 12000 */
+ 37, /* 11025 */
+ 34, /* 8000 */
+ 0,
+ 0,
+ 0,
+ 0
+};
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