adding another exception (43fa5856) · Commits · SA4 / Audio / IVAS BASOP

lib_enc/gain_enc_fx.c

+39 −20

Original line number	Diff line number	Diff line
		@@ -275,6 +275,21 @@ void gain_enc_mless_fx(
		/* gain_inov = 1.0f / sqrt((dot_product(code, code, L_SUBFR) + 0.01) / L_SUBFR) */
		L_tmp = Dot_product12( code, code, L_SUBFR, &exp_code );
		exp_inov = sub( exp_code, 18 + 6 );
		#ifdef FIX_1959_assert_in_gain_enc_mless_fx
		// To avoid crash in case code value is 0,
		test();
		IF( EQ_16( BASOP_Util_Cmp_Mant32Exp( L_tmp, exp_inov, 21474836, 0 ), -1 ) && element_mode > EVS_MONO )
		{
		// setting values to avoid extra computation
		gain_inov = 32767; /8(max value gain_inov can hold) in Q12*/
		Ei = -9743; /* -38 in Q8*/
		move16();
		move16();
		}
		ELSE
		#endif
		{

		exp_code = sub( exp_code, 30 );

		/Ei = 10 log10((dot_product(code, code, L_SUBFR) + 0.01) / L_SUBFR) */
		@@ -287,10 +302,10 @@ void gain_enc_mless_fx(
		tmp = add( 30 - 18 - 6 - 1, sub( exp_code, tmp ) ); /* exp: -18 (code in Q9), -6 (/L_SUBFR) */
		L_tmp1 = Mpy_32_16( tmp, frac, 12330 ); /* Q13 */
		Ei = round_fx( L_shl( L_tmp1, 11 ) ); /* Q8 */

		#ifndef FIX_1959_assert_in_gain_enc_mless_fx
		/* predicted codebook gain */
		gcode0 = sub( Es_pred, Ei ); /* Q8 */

		#endif
		/---------------------------------------------------------------
		* Decode codebook gain and the adaptive excitation low-pass
		* filtering factor (Finalize computation )
		@@ -299,7 +314,11 @@ void gain_enc_mless_fx(
		L_tmp = Isqrt_lc( L_tmp, &exp_inov );
		gain_inov = extract_h( L_shl( L_tmp, sub( exp_inov, 3 ) ) ); / gain_inov in Q12 */
		move16();

		}
		#ifdef FIX_1959_assert_in_gain_enc_mless_fx
		/* predicted codebook gain */
		gcode0 = sub( Es_pred, Ei ); /* Q8 */
		#endif
		/* gcode0 = pow(10, 0.05 * (Es_pred - Ei)) */
		/----------------------------------------------------------------
		* gcode0 = pow(10.0, gcode0/20)