diff options
Diffstat (limited to 'media/ffvpx/libavcodec/arm/mpegaudiodsp_fixed_armv6.S')
| -rw-r--r-- | media/ffvpx/libavcodec/arm/mpegaudiodsp_fixed_armv6.S | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/arm/mpegaudiodsp_fixed_armv6.S b/media/ffvpx/libavcodec/arm/mpegaudiodsp_fixed_armv6.S new file mode 100644 index 0000000000..977abb6939 --- /dev/null +++ b/media/ffvpx/libavcodec/arm/mpegaudiodsp_fixed_armv6.S @@ -0,0 +1,143 @@ +/* + * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/arm/asm.S" + +.macro skip args:vararg +.endm + +.macro sum8 lo, hi, w, p, t1, t2, t3, t4, rsb=skip, offs=0 + ldr \t1, [\w, #4*\offs] + ldr \t2, [\p, #4]! + \rsb \t1, \t1, #0 + .irpc i, 135 + ldr \t3, [\w, #4*64*\i+4*\offs] + ldr \t4, [\p, #4*64*\i] + smlal \lo, \hi, \t1, \t2 + \rsb \t3, \t3, #0 + ldr \t1, [\w, #4*64*(\i+1)+4*\offs] + ldr \t2, [\p, #4*64*(\i+1)] + smlal \lo, \hi, \t3, \t4 + \rsb \t1, \t1, #0 + .endr + ldr \t3, [\w, #4*64*7+4*\offs] + ldr \t4, [\p, #4*64*7] + smlal \lo, \hi, \t1, \t2 + \rsb \t3, \t3, #0 + smlal \lo, \hi, \t3, \t4 +.endm + +.macro round rd, lo, hi + lsr \rd, \lo, #24 + bic \lo, \lo, #0xff000000 + orr \rd, \rd, \hi, lsl #8 + mov \hi, #0 + ssat \rd, #16, \rd +.endm + +function ff_mpadsp_apply_window_fixed_armv6, export=1 + push {r2,r4-r11,lr} + + add r4, r0, #4*512 @ synth_buf + 512 + .rept 4 + ldm r0!, {r5-r12} + stm r4!, {r5-r12} + .endr + + ldr r4, [sp, #40] @ incr + sub r0, r0, #4*17 @ synth_buf + 16 + ldr r8, [r2] @ sum:low + add r2, r0, #4*32 @ synth_buf + 48 + rsb r5, r4, r4, lsl #5 @ 31 * incr + lsl r4, r4, #1 + asr r9, r8, #31 @ sum:high + add r5, r3, r5, lsl #1 @ samples2 + add r6, r1, #4*32 @ w2 + str r4, [sp, #40] + + sum8 r8, r9, r1, r0, r10, r11, r12, lr + sum8 r8, r9, r1, r2, r10, r11, r12, lr, rsb, 32 + round r10, r8, r9 + strh_post r10, r3, r4 + + mov lr, #15 +1: + ldr r12, [r0, #4]! + ldr r11, [r6, #-4]! + ldr r10, [r1, #4]! + .irpc i, 0246 + .if \i + ldr r11, [r6, #4*64*\i] + ldr r10, [r1, #4*64*\i] + .endif + rsb r11, r11, #0 + smlal r8, r9, r10, r12 + ldr r10, [r0, #4*64*(\i+1)] + .ifeq \i + smull r4, r7, r11, r12 + .else + smlal r4, r7, r11, r12 + .endif + ldr r11, [r6, #4*64*(\i+1)] + ldr r12, [r1, #4*64*(\i+1)] + rsb r11, r11, #0 + smlal r8, r9, r12, r10 + .iflt \i-6 + ldr r12, [r0, #4*64*(\i+2)] + .else + ldr r12, [r2, #-4]! + .endif + smlal r4, r7, r11, r10 + .endr + .irpc i, 0246 + ldr r10, [r1, #4*64*\i+4*32] + rsb r12, r12, #0 + ldr r11, [r6, #4*64*\i+4*32] + smlal r8, r9, r10, r12 + ldr r10, [r2, #4*64*(\i+1)] + smlal r4, r7, r11, r12 + ldr r12, [r1, #4*64*(\i+1)+4*32] + rsb r10, r10, #0 + ldr r11, [r6, #4*64*(\i+1)+4*32] + smlal r8, r9, r12, r10 + .iflt \i-6 + ldr r12, [r2, #4*64*(\i+2)] + .else + ldr r12, [sp, #40] + .endif + smlal r4, r7, r11, r10 + .endr + round r10, r8, r9 + adds r8, r8, r4 + adc r9, r9, r7 + strh_post r10, r3, r12 + round r11, r8, r9 + subs lr, lr, #1 + strh_dpost r11, r5, r12 + bgt 1b + + sum8 r8, r9, r1, r0, r10, r11, r12, lr, rsb, 33 + pop {r4} + round r10, r8, r9 + str r8, [r4] + strh r10, [r3] + + pop {r4-r11,pc} +endfunc |