-int l2_select_table(int bitrate, int nb_channels, int freq, int lsf);
-int mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_rate);
-void ff_mpa_synth_init(MPA_INT *window);
-void ff_mpa_synth_filter(MPA_INT *synth_buf_ptr, int *synth_buf_offset,
- MPA_INT *window, int *dither_state,
- OUT_INT *samples, int incr,
- int32_t sb_samples[SBLIMIT]);
-
-extern const uint16_t mpa_bitrate_tab[2][3][15];
-extern const uint16_t mpa_freq_tab[3];
-extern const unsigned char *alloc_tables[5];
-extern const double enwindow[512];
-extern const int sblimit_table[5];
-extern const int quant_steps[17];
-extern const int quant_bits[17];
-extern const int32_t mpa_enwindow[257];
+int ff_mpa_l2_select_table(int bitrate, int nb_channels, int freq, int lsf);