ffmpeg / libavcodec / arm / mpegvideo_neon.S @ 451b4b86
History | View | Annotate | Download (3.65 KB)
| 1 |
/* |
|---|---|
| 2 |
* Copyright (c) 2010 Mans Rullgard |
| 3 |
* |
| 4 |
* This file is part of FFmpeg. |
| 5 |
* |
| 6 |
* FFmpeg is free software; you can redistribute it and/or |
| 7 |
* modify it under the terms of the GNU Lesser General Public |
| 8 |
* License as published by the Free Software Foundation; either |
| 9 |
* version 2.1 of the License, or (at your option) any later version. |
| 10 |
* |
| 11 |
* FFmpeg is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 |
* Lesser General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU Lesser General Public |
| 17 |
* License along with FFmpeg; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
#include "asm.S" |
| 22 |
#include "asm-offsets.h" |
| 23 |
|
| 24 |
function ff_dct_unquantize_h263_inter_neon, export=1 |
| 25 |
add r12, r0, #BLOCK_LAST_INDEX |
| 26 |
ldr r12, [r12, r2, lsl #2] |
| 27 |
add r0, r0, #INTER_SCANTAB_RASTER_END |
| 28 |
ldrb r12, [r0, r12] |
| 29 |
sub r2, r3, #1 |
| 30 |
lsl r0, r3, #1 |
| 31 |
orr r2, r2, #1 |
| 32 |
add r3, r12, #1 |
| 33 |
endfunc |
| 34 |
|
| 35 |
function ff_dct_unquantize_h263_neon, export=1 |
| 36 |
vdup.16 q15, r0 @ qmul |
| 37 |
vdup.16 q14, r2 @ qadd |
| 38 |
vneg.s16 q13, q14 |
| 39 |
cmp r3, #4 |
| 40 |
mov r0, r1 |
| 41 |
ble 2f |
| 42 |
1: |
| 43 |
vld1.16 {q0}, [r0,:128]!
|
| 44 |
vclt.s16 q3, q0, #0 |
| 45 |
vld1.16 {q8}, [r0,:128]!
|
| 46 |
vceq.s16 q1, q0, #0 |
| 47 |
vmul.s16 q2, q0, q15 |
| 48 |
vclt.s16 q11, q8, #0 |
| 49 |
vmul.s16 q10, q8, q15 |
| 50 |
vbsl q3, q13, q14 |
| 51 |
vbsl q11, q13, q14 |
| 52 |
vadd.s16 q2, q2, q3 |
| 53 |
vceq.s16 q9, q8, #0 |
| 54 |
vadd.s16 q10, q10, q11 |
| 55 |
vbif q0, q2, q1 |
| 56 |
vbif q8, q10, q9 |
| 57 |
subs r3, r3, #16 |
| 58 |
vst1.16 {q0}, [r1,:128]!
|
| 59 |
vst1.16 {q8}, [r1,:128]!
|
| 60 |
bxle lr |
| 61 |
cmp r3, #8 |
| 62 |
bgt 1b |
| 63 |
2: |
| 64 |
vld1.16 {d0}, [r0,:64]
|
| 65 |
vclt.s16 d3, d0, #0 |
| 66 |
vceq.s16 d1, d0, #0 |
| 67 |
vmul.s16 d2, d0, d30 |
| 68 |
vbsl d3, d26, d28 |
| 69 |
vadd.s16 d2, d2, d3 |
| 70 |
vbif d0, d2, d1 |
| 71 |
vst1.16 {d0}, [r1,:64]
|
| 72 |
bx lr |
| 73 |
endfunc |
| 74 |
|
| 75 |
function ff_dct_unquantize_h263_intra_neon, export=1 |
| 76 |
push {r4-r6,lr}
|
| 77 |
add r12, r0, #BLOCK_LAST_INDEX |
| 78 |
ldr r6, [r0, #AC_PRED] |
| 79 |
add lr, r0, #INTER_SCANTAB_RASTER_END |
| 80 |
cmp r6, #0 |
| 81 |
movne r12, #63 |
| 82 |
bne 1f |
| 83 |
ldr r12, [r12, r2, lsl #2] |
| 84 |
ldrb r12, [lr, r12] |
| 85 |
1: ldr r5, [r0, #H263_AIC] |
| 86 |
ldrsh r4, [r1] |
| 87 |
cmp r5, #0 |
| 88 |
mov r5, r1 |
| 89 |
movne r2, #0 |
| 90 |
bne 2f |
| 91 |
cmp r2, #4 |
| 92 |
addge r0, r0, #4 |
| 93 |
sub r2, r3, #1 |
| 94 |
ldr r6, [r0, #Y_DC_SCALE] |
| 95 |
orr r2, r2, #1 |
| 96 |
smulbb r4, r4, r6 |
| 97 |
2: lsl r0, r3, #1 |
| 98 |
add r3, r12, #1 |
| 99 |
bl ff_dct_unquantize_h263_neon |
| 100 |
vmov.16 d0[0], r4 |
| 101 |
vst1.16 {d0[0]}, [r5]
|
| 102 |
pop {r4-r6,pc}
|
| 103 |
endfunc |