-void ff_acelp_fc_pulse_per_track(
- int16_t* fc_v,
- const uint8_t *tab1,
- const uint8_t *tab2,
- int pulse_indices,
- int pulse_signs,
- int pulse_count,
- int bits);
-
-/**
- * \brief weighted sum of two vectors with rounding
- * \param out [out] result of addition
- * \param in_a first vector
- * \param in_b second vector
- * \param weight_coeff_a first vector weight coefficient
- * \param weight_coeff_a second vector weight coefficient
- * \param rounder this value will be added to the sum of the two vectors
- * \param shift result will be shifted to right by this value
- * \param length vectors length
- *
- * \note It is safe to pass the same buffer for out and in_a or in_b.
- *
- * out[i] = (in_a[i]*weight_a+in_b[i]*weight_b+rounder) >> shift
- */
-void ff_acelp_weighted_vector_sum(
- int16_t* out,
- const int16_t *in_a,
- const int16_t *in_b,
- int16_t weight_coeff_a,
- int16_t weight_coeff_b,
- int16_t rounder,
- int shift,
- int length);
-
-#endif /* FFMPEG_ACELP_VECTORS_H */
+void ff_acelp_fc_pulse_per_track(int16_t* fc_v,
+ const uint8_t *tab1,
+ const uint8_t *tab2,
+ int pulse_indexes,
+ int pulse_signs,
+ int pulse_count,
+ int bits);
+
+/**
+ * Decode the algebraic codebook index to pulse positions and signs and
+ * construct the algebraic codebook vector for MODE_12k2.
+ *
+ * @note: The positions and signs are explicitly coded in MODE_12k2.
+ *
+ * @param fixed_index positions of the ten pulses
+ * @param fixed_sparse pointer to the algebraic codebook vector
+ * @param gray_decode gray decoding table
+ * @param half_pulse_count number of couples of pulses
+ * @param bits length of one pulse index in bits
+ */
+void ff_decode_10_pulses_35bits(const int16_t *fixed_index,
+ AMRFixed *fixed_sparse,
+ const uint8_t *gray_decode,
+ int half_pulse_count, int bits);
+
+
+/**
+ * weighted sum of two vectors with rounding.
+ * @param out [out] result of addition
+ * @param in_a first vector
+ * @param in_b second vector
+ * @param weight_coeff_a first vector weight coefficient
+ * @param weight_coeff_a second vector weight coefficient
+ * @param rounder this value will be added to the sum of the two vectors
+ * @param shift result will be shifted to right by this value
+ * @param length vectors length
+ *
+ * @note It is safe to pass the same buffer for out and in_a or in_b.
+ *
+ * out[i] = (in_a[i]*weight_a + in_b[i]*weight_b + rounder) >> shift
+ */
+void ff_acelp_weighted_vector_sum(int16_t* out,
+ const int16_t *in_a,
+ const int16_t *in_b,
+ int16_t weight_coeff_a,
+ int16_t weight_coeff_b,
+ int16_t rounder,
+ int shift,
+ int length);
+
+/**
+ * float implementation of weighted sum of two vectors.
+ * @param out [out] result of addition
+ * @param in_a first vector
+ * @param in_b second vector
+ * @param weight_coeff_a first vector weight coefficient
+ * @param weight_coeff_a second vector weight coefficient
+ * @param length vectors length
+ *
+ * @note It is safe to pass the same buffer for out and in_a or in_b.
+ */
+void ff_weighted_vector_sumf(float *out, const float *in_a, const float *in_b,
+ float weight_coeff_a, float weight_coeff_b,
+ int length);
+
+/**
+ * Adaptative gain control (as used in AMR postfiltering)
+ *
+ * @param buf_out the input speech buffer
+ * @param speech_energ input energy
+ * @param size the input buffer size
+ * @param alpha exponential filter factor
+ * @param gain_mem a pointer to the filter memory (single float of size)
+ */
+void ff_adaptative_gain_control(float *buf_out, float speech_energ,
+ int size, float alpha, float *gain_mem);
+
+/**
+ * Set the sum of squares of a signal by scaling
+ *
+ * @param out output samples
+ * @param in input samples
+ * @param sum_of_squares new sum of squares
+ * @param n number of samples
+ *
+ * @note If the input is zero (or its energy underflows), the output is zero.
+ * This is the behavior of AGC in the AMR reference decoder. The QCELP
+ * reference decoder seems to have undefined behavior.
+ *
+ * TIA/EIA/IS-733 2.4.8.3-2/3/4/5, 2.4.8.6
+ * 3GPP TS 26.090 6.1 (6)
+ */
+void ff_scale_vector_to_given_sum_of_squares(float *out, const float *in,
+ float sum_of_squares, const int n);
+
+/**
+ * Add fixed vector to an array from a sparse representation
+ *
+ * @param out fixed vector with pitch sharpening
+ * @param in sparse fixed vector
+ * @param scale number to multiply the fixed vector by
+ * @param size the output vector size
+ */
+void ff_set_fixed_vector(float *out, const AMRFixed *in, float scale, int size);
+
+/**
+ * Clear array values set by set_fixed_vector
+ *
+ * @param out fixed vector to be cleared
+ * @param in sparse fixed vector
+ * @param size the output vector size
+ */
+void ff_clear_fixed_vector(float *out, const AMRFixed *in, int size);
+
+#endif /* AVCODEC_ACELP_VECTORS_H */