@@ -28,6 +28,7 @@ int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len);

 void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift);

 void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift);

 void ff_float_to_fixed24_neon(int32_t *dst, const float *src, unsigned int len);

+void ff_ac3_extract_exponents_neon(uint8_t *exp, int32_t *coef, int nb_coefs);

 void ff_ac3_bit_alloc_calc_bap_armv6(int16_t *mask, int16_t *psd,

                                      int start, int end,

@@ -50,5 +51,6 @@ av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)

         c->ac3_lshift_int16      = ff_ac3_lshift_int16_neon;

         c->ac3_rshift_int32      = ff_ac3_rshift_int32_neon;

         c->float_to_fixed24      = ff_float_to_fixed24_neon;

+        c->extract_exponents     = ff_ac3_extract_exponents_neon;

     }

 }

@@ -92,3 +92,23 @@ function ff_float_to_fixed24_neon, export=1

         bgt             1b

         bx              lr

 endfunc

+

+function ff_ac3_extract_exponents_neon, export=1

+        vmov.i32        q14, #24

+        vmov.i32        q15, #8

+1:

+        vld1.32         {q0},     [r1,:128]

+        vabs.s32        q1,  q0

+        vclz.i32        q3,  q1

+        vsub.i32        q3,  q3,  q15

+        vcge.s32        q2,  q3,  q14

+        vbit            q3,  q14, q2

+        vbic            q0,  q0,  q2

+        vmovn.i32       d6,  q3

+        vmovn.i16       d6,  q3

+        vst1.32         {q0},     [r1,:128]!

+        vst1.32         {d6[0]},  [r0,:32]!

+        subs            r2,  r2,  #4

+        bgt             1b

+        bx              lr

+endfunc