diff options
Diffstat (limited to 'ffmpeg1/libavcodec/arm/ac3dsp_neon.S')
| -rw-r--r-- | ffmpeg1/libavcodec/arm/ac3dsp_neon.S | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/ffmpeg1/libavcodec/arm/ac3dsp_neon.S b/ffmpeg1/libavcodec/arm/ac3dsp_neon.S new file mode 100644 index 0000000..42f35e3 --- /dev/null +++ b/ffmpeg1/libavcodec/arm/ac3dsp_neon.S @@ -0,0 +1,154 @@ +/* + * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/arm/asm.S" + +function ff_ac3_max_msb_abs_int16_neon, export=1 + vmov.i16 q0, #0 + vmov.i16 q2, #0 +1: vld1.16 {q1}, [r0,:128]! + vabs.s16 q1, q1 + vld1.16 {q3}, [r0,:128]! + vabs.s16 q3, q3 + vorr q0, q0, q1 + vorr q2, q2, q3 + subs r1, r1, #16 + bgt 1b + vorr q0, q0, q2 + vorr d0, d0, d1 + vpmax.u16 d0, d0, d0 + vpmax.u16 d0, d0, d0 + vmov.u16 r0, d0[0] + bx lr +endfunc + +function ff_ac3_exponent_min_neon, export=1 + cmp r1, #0 + it eq + bxeq lr + push {lr} + mov r12, #256 +1: + vld1.8 {q0}, [r0,:128] + mov lr, r1 + add r3, r0, #256 +2: vld1.8 {q1}, [r3,:128], r12 + subs lr, lr, #1 + vmin.u8 q0, q0, q1 + bgt 2b + subs r2, r2, #16 + vst1.8 {q0}, [r0,:128]! + bgt 1b + pop {pc} +endfunc + +function ff_ac3_lshift_int16_neon, export=1 + vdup.16 q0, r2 +1: vld1.16 {q1}, [r0,:128] + vshl.s16 q1, q1, q0 + vst1.16 {q1}, [r0,:128]! + subs r1, r1, #8 + bgt 1b + bx lr +endfunc + +function ff_ac3_rshift_int32_neon, export=1 + rsb r2, r2, #0 + vdup.32 q0, r2 +1: vld1.32 {q1}, [r0,:128] + vshl.s32 q1, q1, q0 + vst1.32 {q1}, [r0,:128]! + subs r1, r1, #4 + bgt 1b + bx lr +endfunc + +function ff_float_to_fixed24_neon, export=1 +1: vld1.32 {q0-q1}, [r1,:128]! + vcvt.s32.f32 q0, q0, #24 + vld1.32 {q2-q3}, [r1,:128]! + vcvt.s32.f32 q1, q1, #24 + vcvt.s32.f32 q2, q2, #24 + vst1.32 {q0-q1}, [r0,:128]! + vcvt.s32.f32 q3, q3, #24 + vst1.32 {q2-q3}, [r0,:128]! + subs r2, r2, #16 + bgt 1b + bx lr +endfunc + +function ff_ac3_extract_exponents_neon, export=1 + vmov.i32 q15, #8 +1: + vld1.32 {q0}, [r1,:128]! + vabs.s32 q1, q0 + vclz.i32 q3, q1 + vsub.i32 q3, q3, q15 + vmovn.i32 d6, q3 + vmovn.i16 d6, q3 + vst1.32 {d6[0]}, [r0,:32]! + subs r2, r2, #4 + bgt 1b + bx lr +endfunc + +function ff_ac3_sum_square_butterfly_int32_neon, export=1 + vmov.i64 q0, #0 + vmov.i64 q1, #0 + vmov.i64 q2, #0 + vmov.i64 q3, #0 +1: + vld1.32 {d16}, [r1]! + vld1.32 {d17}, [r2]! + vadd.s32 d18, d16, d17 + vsub.s32 d19, d16, d17 + vmlal.s32 q0, d16, d16 + vmlal.s32 q1, d17, d17 + vmlal.s32 q2, d18, d18 + vmlal.s32 q3, d19, d19 + subs r3, r3, #2 + bgt 1b + vadd.s64 d0, d0, d1 + vadd.s64 d1, d2, d3 + vadd.s64 d2, d4, d5 + vadd.s64 d3, d6, d7 + vst1.64 {q0-q1}, [r0] + bx lr +endfunc + +function ff_ac3_sum_square_butterfly_float_neon, export=1 + vmov.f32 q0, #0.0 + vmov.f32 q1, #0.0 +1: + vld1.32 {d16}, [r1]! + vld1.32 {d17}, [r2]! + vadd.f32 d18, d16, d17 + vsub.f32 d19, d16, d17 + vmla.f32 d0, d16, d16 + vmla.f32 d1, d17, d17 + vmla.f32 d2, d18, d18 + vmla.f32 d3, d19, d19 + subs r3, r3, #2 + bgt 1b + vpadd.f32 d0, d0, d1 + vpadd.f32 d1, d2, d3 + vst1.32 {q0}, [r0] + bx lr +endfunc |