/*
* Copyright (c) 2010 Mans Rullgard
*
* 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"
#include "asm-offsets.h"
function ff_dct_unquantize_h263_inter_neon, export=1
add r12, r0, #BLOCK_LAST_INDEX
ldr r12, [r12, r2, lsl #2]
add r0, r0, #INTER_SCANTAB_RASTER_END
ldrb r12, [r0, r12]
sub r2, r3, #1
lsl r0, r3, #1
orr r2, r2, #1
add r3, r12, #1
endfunc
function ff_dct_unquantize_h263_neon, export=1
vdup.16 q15, r0 @ qmul
vdup.16 q14, r2 @ qadd
vneg.s16 q13, q14
cmp r3, #4
mov r0, r1
ble 2f
1:
vld1.16 {q0}, [r0,:128]!
vclt.s16 q3, q0, #0
vld1.16 {q8}, [r0,:128]!
vceq.s16 q1, q0, #0
vmul.s16 q2, q0, q15
vclt.s16 q11, q8, #0
vmul.s16 q10, q8, q15
vbsl q3, q13, q14
vbsl q11, q13, q14
vadd.s16 q2, q2, q3
vceq.s16 q9, q8, #0
vadd.s16 q10, q10, q11
vbif q0, q2, q1
vbif q8, q10, q9
subs r3, r3, #16
vst1.16 {q0}, [r1,:128]!
vst1.16 {q8}, [r1,:128]!
it le
bxle lr
cmp r3, #8
bgt 1b
2:
vld1.16 {d0}, [r0,:64]
vclt.s16 d3, d0, #0
vceq.s16 d1, d0, #0
vmul.s16 d2, d0, d30
vbsl d3, d26, d28
vadd.s16 d2, d2, d3
vbif d0, d2, d1
vst1.16 {d0}, [r1,:64]
bx lr
endfunc
function ff_dct_unquantize_h263_intra_neon, export=1
push {r4-r6,lr}
add r12, r0, #BLOCK_LAST_INDEX
ldr r6, [r0, #AC_PRED]
add lr, r0, #INTER_SCANTAB_RASTER_END
cmp r6, #0
it ne
movne r12, #63
bne 1f
ldr r12, [r12, r2, lsl #2]
ldrb r12, [lr, r12]
1: ldr r5, [r0, #H263_AIC]
ldrsh r4, [r1]
cmp r5, #0
mov r5, r1
it ne
movne r2, #0
bne 2f
cmp r2, #4
it ge
addge r0, r0, #4
sub r2, r3, #1
ldr r6, [r0, #Y_DC_SCALE]
orr r2, r2, #1
smulbb r4, r4, r6
2: lsl r0, r3, #1
add r3, r12, #1
bl X(ff_dct_unquantize_h263_neon)
vmov.16 d0[0], r4
vst1.16 {d0[0]}, [r5]
pop {r4-r6,pc}
endfunc