*/
void (*ac3_exponent_min)(uint8_t *exp, int num_reuse_blocks, int nb_coefs);
- /**
- * Calculate the maximum MSB of the absolute value of each element in an
- * array of int16_t.
- * @param src input array
- * constraints: align 16. values must be in range [-32767,32767]
- * @param len number of values in the array
- * constraints: multiple of 16 greater than 0
- * @return a value with the same MSB as max(abs(src[]))
- */
- int (*ac3_max_msb_abs_int16)(const int16_t *src, int len);
-
- /**
- * Left-shift each value in an array of int16_t by a specified amount.
- * @param src input array
- * constraints: align 16
- * @param len number of values in the array
- * constraints: multiple of 32 greater than 0
- * @param shift left shift amount
- * constraints: range [0,15]
- */
- void (*ac3_lshift_int16)(int16_t *src, unsigned int len, unsigned int shift);
-
- /**
- * Right-shift each value in an array of int32_t by a specified amount.
- * @param src input array
- * constraints: align 16
- * @param len number of values in the array
- * constraints: multiple of 16 greater than 0
- * @param shift right shift amount
- * constraints: range [0,31]
- */
- void (*ac3_rshift_int32)(int32_t *src, unsigned int len, unsigned int shift);
-
/**
* Convert an array of float in range [-1.0,1.0] to int32_t with range
* [-(1<<24),(1<<24)]
int in_channels;
void (*downmix)(float **samples, float **matrix, int len);
void (*downmix_fixed)(int32_t **samples, int16_t **matrix, int len);
-
- /**
- * Apply symmetric window in 16-bit fixed-point.
- * @param output destination array
- * constraints: 16-byte aligned
- * @param input source array
- * constraints: 16-byte aligned
- * @param window window array
- * constraints: 16-byte aligned, at least len/2 elements
- * @param len full window length
- * constraints: multiple of ? greater than zero
- */
- void (*apply_window_int16)(int16_t *output, const int16_t *input,
- const int16_t *window, unsigned int len);
} AC3DSPContext;
void ff_ac3dsp_init (AC3DSPContext *c, int bit_exact);