plugins/toolame/encoder.h

   1 #ifndef ENCODER_DOT_H
   2 #define ENCODER_DOT_H
   3 /***********************************************************************
   4 *
   5 *  Encoder Include Files
   6 *
   7 ***********************************************************************/
   8
   9 /***********************************************************************
  10 *
  11 *  Encoder Definitions
  12 *
  13 ***********************************************************************/
  14
  15 /* General Definitions */
  16
  17 /* Default Input Arguments (for command line control) */
  18
  19 #define DFLT_MOD        's'     /* default mode is stereo */
  20 #define DFLT_PSY        1       /* default psych model is 1 */
  21 #define DFLT_SFQ        44.1    /* default input sampling rate is 44.1 kHz */
  22 #define DFLT_EMP        'n'     /* default de-emphasis is none */
  23 #define DFLT_EXT        ".mp2"  /* default output file extension */
  24
  25 #define FILETYPE_ENCODE 'TEXT'
  26 #define CREATOR_ENCODE  'MpgD'
  27
  28 /* This is the smallest MNR a subband can have before it is counted
  29    as 'noisy' by the logic which chooses the number of JS subbands */
  30
  31 #define NOISY_MIN_MNR   0.0
  32
  33 /* Psychacoustic Model 1 Definitions */
  34
  35 #define CB_FRACTION     0.33
  36 #define MAX_SNR         1000
  37 #define NOISE           10
  38 #define TONE            20
  39 #define DBMIN           -200.0
  40 #define LAST            -1
  41 #define STOP            -100
  42 #define POWERNORM       90.3090 /* = 20 * log10(32768) to normalize */
  43                                 /* max output power to 96 dB per spec */
  44
  45 /* Psychoacoustic Model 2 Definitions */
  46
  47 #define LOGBLKSIZE      10
  48 #define BLKSIZE         1024
  49 #define HBLKSIZE        513
  50 #define CRITBANDS          63
  51 #define LXMIN           32.0
  52
  53 /***********************************************************************
  54 *
  55 *  Encoder Type Definitions
  56 *
  57 ***********************************************************************/
  58
  59 /* Psychoacoustic Model 1 Type Definitions */
  60
  61 typedef int IFFT2[FFT_SIZE / 2];
  62 typedef int IFFT[FFT_SIZE];
  63 typedef double D9[9];
  64 typedef double D10[10];
  65 typedef double D640[640];
  66 typedef double D1408[1408];
  67 typedef double DFFT2[FFT_SIZE / 2];
  68 typedef double DFFT[FFT_SIZE];
  69 typedef double DSBL[SBLIMIT];
  70 typedef double D2SBL[2][SBLIMIT];
  71
  72 typedef struct
  73 {
  74   int line;
  75   double bark, hear, x;
  76 }
  77 g_thres, *g_ptr;
  78
  79 typedef struct
  80 {
  81   double x;
  82   int type, next, map;
  83 }
  84 mask, *mask_ptr;
  85
  86 /* Psychoacoustic Model 2 Type Definitions */
  87
  88 typedef int ICB[CRITBANDS];
  89 typedef int IHBLK[HBLKSIZE];
  90 typedef FLOAT F32[32];
  91 typedef FLOAT F2_32[2][32];
  92 typedef FLOAT FCB[CRITBANDS];
  93 typedef FLOAT FCBCB[CRITBANDS][CRITBANDS];
  94 typedef FLOAT FBLK[BLKSIZE];
  95 typedef FLOAT FHBLK[HBLKSIZE];
  96 typedef FLOAT F2HBLK[2][HBLKSIZE];
  97 typedef FLOAT F22HBLK[2][2][HBLKSIZE];
  98 typedef double DCB[CRITBANDS];
  99
 100 /***********************************************************************
 101 *
 102 *  Encoder Function Prototype Declarations
 103 *
 104 ***********************************************************************/
 105
 106 /* The following functions are in the file "musicin.c" */
 107
 108 extern void obtain_parameters (frame_params *, int *, unsigned long *,
 109                                char[MAX_NAME_SIZE], char[MAX_NAME_SIZE]);
 110 extern void parse_args (int,
 111         char **,
 112         frame_params *,
 113         int *,
 114         unsigned long *,
 115         int *,
 116         char[MAX_NAME_SIZE], char[MAX_NAME_SIZE]);
 117 extern void print_config (frame_params *, int *,
 118                           char[MAX_NAME_SIZE], char[MAX_NAME_SIZE]);
 119 void usage (void);
 120 extern void aiff_check (char *, IFF_AIFF *, int *);
 121
 122 /* The following functions are in the file "encode.c" */
 123
 124 extern unsigned long read_samples (FILE *, short[2304], unsigned long,
 125                                    unsigned long);
 126 #if 0
 127 extern unsigned long get_audio (FILE *, short[2][1152], unsigned long,
 128                                 int, int);
 129 #else
 130 extern unsigned long get_audio (FILE *, FILE *, short[2][1152], unsigned long,
 131                                 int, layer * info);
 132 #endif
 133 extern void window_subband (short **, double[HAN_SIZE], int);
 134 extern void create_ana_filter (double[SBLIMIT][64]);
 135 extern void filter_subband (double[HAN_SIZE], double[SBLIMIT]);
 136 extern void encode_info (frame_params *, Bit_stream_struc *);
 137 extern double mod (double);
 138 extern void combine_LR (double[2][3][SCALE_BLOCK][SBLIMIT],
 139                            double[3][SCALE_BLOCK][SBLIMIT], int);
 140 extern void scale_factor_calc (double[][3][SCALE_BLOCK][SBLIMIT],
 141                                   unsigned int[][3][SBLIMIT], int, int);
 142 extern void pick_scale (unsigned int[2][3][SBLIMIT], frame_params *,
 143                         double[2][SBLIMIT]);
 144 extern void put_scale (unsigned int[2][3][SBLIMIT], frame_params *,
 145                        double[2][SBLIMIT]);
 146 extern void transmission_pattern (unsigned int[2][3][SBLIMIT],
 147                                      unsigned int[2][SBLIMIT],
 148                                      frame_params *);
 149 extern void encode_scale (unsigned int[2][SBLIMIT],
 150                              unsigned int[2][SBLIMIT],
 151                              unsigned int[2][3][SBLIMIT], frame_params *,
 152                              Bit_stream_struc *);
 153 extern int bits_for_nonoise (double[2][SBLIMIT], unsigned int[2][SBLIMIT],
 154                                 frame_params *);
 155 extern void main_bit_allocation (double[2][SBLIMIT],
 156                                     unsigned int[2][SBLIMIT],
 157                                     unsigned int[2][SBLIMIT], int *,
 158                                     frame_params *);
 159 extern int a_bit_allocation (double[2][SBLIMIT], unsigned int[2][SBLIMIT],
 160                                 unsigned int[2][SBLIMIT], int *,
 161                                 frame_params *);
 162 extern void subband_quantization (unsigned int[2][3][SBLIMIT],
 163                                      double[2][3][SCALE_BLOCK][SBLIMIT],
 164                                      unsigned int[3][SBLIMIT],
 165                                      double[3][SCALE_BLOCK][SBLIMIT],
 166                                      unsigned int[2][SBLIMIT],
 167                                      unsigned int[2][3][SCALE_BLOCK][SBLIMIT],
 168                                      frame_params *);
 169 extern void encode_bit_alloc (unsigned int[2][SBLIMIT], frame_params *,
 170                                  Bit_stream_struc *);
 171 extern void sample_encoding (unsigned int[2][3][SCALE_BLOCK][SBLIMIT],
 172                                 unsigned int[2][SBLIMIT], frame_params *,
 173                                 Bit_stream_struc *);
 174 extern void encode_CRC (unsigned int, Bit_stream_struc *);
 175
 176 /* The following functions are in the file "tonal.c" */
 177
 178 extern void read_cbound (int);
 179 extern void read_freq_band (g_ptr *, int);
 180 extern void make_map (mask[HAN_SIZE], g_thres *);
 181 extern INLINE double add_db (double, double);
 182 extern void f_f_t (double[FFT_SIZE], mask[HAN_SIZE]);
 183 extern void hann_win (double[FFT_SIZE]);
 184 extern void pick_max (mask[HAN_SIZE], double[SBLIMIT]);
 185 extern void tonal_label (mask[HAN_SIZE], int *);
 186 extern void noise_label (mask *, int *, g_thres *);
 187 extern void subsampling (mask[HAN_SIZE], g_thres *, int *, int *);
 188 extern void threshold (mask[HAN_SIZE], g_thres *, int *, int *, int);
 189 extern void minimum_mask (g_thres *, double[SBLIMIT], int);
 190 extern void smr (double[SBLIMIT], double[SBLIMIT], double[SBLIMIT], int);
 191 extern void psycho_one (short[2][1152], double[2][SBLIMIT],
 192                            double[2][SBLIMIT], frame_params *);
 193
 194
 195 /* The following functions are in the file "psy.c" */
 196
 197 extern void cleanup_psycho_two(void);
 198 extern void init_psycho_two(double sfreq);
 199 extern void psycho_two (short int *, short int[1056], int,
 200                          FLOAT[32], double);
 201
 202 /* The following functions are in the file "subs.c" */
 203
 204 extern void fft (FLOAT[BLKSIZE], FLOAT[BLKSIZE], FLOAT[BLKSIZE],
 205                  FLOAT[BLKSIZE], int);
 206 #endif