* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/common.h"
+#include "libavutil/mathematics.h"
#include "avcodec.h"
#include "dsputil.h"
#include "acelp_pitch_delay.h"
for(i=0; i<ma_pred_order; i++)
mr_energy += quant_energy[i] * ma_prediction_coeff[i];
-#ifdef G729_BITEXACT
- mr_energy += (((-6165LL * ff_log2(dsp->scalarproduct_int16(fc_v, fc_v, subframe_size, 0))) >> 3) & ~0x3ff);
-
- mr_energy = (5439 * (mr_energy >> 15)) >> 8; // (0.15) = (0.15) * (7.23)
-
- return bidir_sal(
- ((ff_exp2(mr_energy & 0x7fff) + 16) >> 5) * (gain_corr_factor >> 1),
- (mr_energy >> 15) - 25
- );
-#else
mr_energy = gain_corr_factor * exp(M_LN10 / (20 << 23) * mr_energy) /
- sqrt(dsp->scalarproduct_int16(fc_v, fc_v, subframe_size, 0));
+ sqrt(dsp->scalarproduct_int16(fc_v, fc_v, subframe_size));
return mr_energy >> 12;
-#endif
}
float ff_amr_set_fixed_gain(float fixed_gain_factor, float fixed_mean_energy,
// Note 10^(0.05 * -10log(average x2)) = 1/sqrt((average x2)).
float val = fixed_gain_factor *
exp2f(M_LOG2_10 * 0.05 *
- (ff_dot_productf(pred_table, prediction_error, 4) +
+ (ff_scalarproduct_float_c(pred_table, prediction_error, 4) +
energy_mean)) /
sqrtf(fixed_mean_energy);