diff options
Diffstat (limited to 'libavcodec/acelp_filters.h')
-rw-r--r-- | libavcodec/acelp_filters.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libavcodec/acelp_filters.h b/libavcodec/acelp_filters.h index e807aed..56197bc 100644 --- a/libavcodec/acelp_filters.h +++ b/libavcodec/acelp_filters.h @@ -25,6 +25,39 @@ #include <stdint.h> +typedef struct ACELPFContext { + /** + * Floating point version of ff_acelp_interpolate() + */ + void (*acelp_interpolatef)(float *out, const float *in, + const float *filter_coeffs, int precision, + int frac_pos, int filter_length, int length); + + /** + * Apply an order 2 rational transfer function in-place. + * + * @param out output buffer for filtered speech samples + * @param in input buffer containing speech data (may be the same as out) + * @param zero_coeffs z^-1 and z^-2 coefficients of the numerator + * @param pole_coeffs z^-1 and z^-2 coefficients of the denominator + * @param gain scale factor for final output + * @param mem intermediate values used by filter (should be 0 initially) + * @param n number of samples (should be a multiple of eight) + */ + void (*acelp_apply_order_2_transfer_function)(float *out, const float *in, + const float zero_coeffs[2], + const float pole_coeffs[2], + float gain, + float mem[2], int n); + +}ACELPFContext; + +/** + * Initialize ACELPFContext. + */ +void ff_acelp_filter_init(ACELPFContext *c); +void ff_acelp_filter_init_mips(ACELPFContext *c); + /** * low-pass Finite Impulse Response filter coefficients. * |