135 lines
3.3 KiB
ArmAsm
135 lines
3.3 KiB
ArmAsm
|
/*
|
||
|
|
** Copyright 2015, The Android Open Source Project
|
||
|
|
**
|
||
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
** you may not use this file except in compliance with the License.
|
||
|
|
** You may obtain a copy of the License at
|
||
|
|
**
|
||
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
**
|
||
|
|
** Unless required by applicable law or agreed to in writing, software
|
||
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
** See the License for the specific language governing permissions and
|
||
|
|
** limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
.macro pixel dreg src f sR sG sB shift
|
||
|
|
|
||
|
|
#if __mips==32 && __mips_isa_rev>=2
|
||
|
|
/* extract red */
|
||
|
|
ext $t4,\src,\shift+11,5
|
||
|
|
mul $t4,$t4,\f
|
||
|
|
|
||
|
|
/* extract green */
|
||
|
|
ext $t5,\src,\shift+5,6
|
||
|
|
mul $t5,$t5,\f
|
||
|
|
|
||
|
|
/* extract blue */
|
||
|
|
ext $t6,\src,\shift,5
|
||
|
|
mul $t6,$t6,\f
|
||
|
|
#else
|
||
|
|
/* extract red */
|
||
|
|
srl $t4,\src,\shift+11
|
||
|
|
andi $t4, 0x1f
|
||
|
|
mul $t4,$t4,\f
|
||
|
|
|
||
|
|
/* extract green */
|
||
|
|
srl $t5,\src,\shift+5
|
||
|
|
andi $t5, 0x3f
|
||
|
|
mul $t5,$t5,\f
|
||
|
|
|
||
|
|
/* extract blue */
|
||
|
|
srl $t6,\src,\shift
|
||
|
|
andi $t6, 0x1f
|
||
|
|
mul $t6,$t6,\f
|
||
|
|
#endif
|
||
|
|
|
||
|
|
srl $t4,$t4,8
|
||
|
|
srl $t5,$t5,8
|
||
|
|
srl $t6,$t6,8
|
||
|
|
addu $t4,$t4,\sR
|
||
|
|
addu $t5,$t5,\sG
|
||
|
|
addu \dreg,$t6,\sB
|
||
|
|
sll $t4,$t4,11
|
||
|
|
sll $t5,$t5,5
|
||
|
|
or \dreg,\dreg,$t4
|
||
|
|
or \dreg,\dreg,$t5
|
||
|
|
andi \dreg, 0xffff
|
||
|
|
.endm
|
||
|
|
|
||
|
|
.text
|
||
|
|
.align
|
||
|
|
|
||
|
|
.global scanline_col32cb16blend_mips
|
||
|
|
.ent scanline_col32cb16blend_mips
|
||
|
|
scanline_col32cb16blend_mips:
|
||
|
|
|
||
|
|
/* check if count is zero */
|
||
|
|
srl $v0,$a1,24 /* sA */
|
||
|
|
beqz $a2,done
|
||
|
|
li $t4, 0x100
|
||
|
|
srl $v1,$v0,7
|
||
|
|
addu $v0,$v1,$v0
|
||
|
|
subu $v0,$t4,$v0 /* f */
|
||
|
|
#if __mips==32 && __mips_isa_rev>=2
|
||
|
|
ext $a3,$a1,3,5 /* sR */
|
||
|
|
ext $t0,$a1,10,6 /* sG */
|
||
|
|
ext $t1,$a1,19,5 /* sB */
|
||
|
|
#else
|
||
|
|
srl $a3, $a1, 3
|
||
|
|
andi $a3, 0x1f /* sR */
|
||
|
|
srl $t0, $a1, 10
|
||
|
|
andi $t0, 0x3f /* sG */
|
||
|
|
srl $t1, $a1, 19
|
||
|
|
andi $t1, 0x1f /* sB */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* check if cnt is at least 4 */
|
||
|
|
addiu $a2,$a2,-4
|
||
|
|
bltz $a2,tail
|
||
|
|
|
||
|
|
loop_4pixels:
|
||
|
|
lw $t7,0($a0)
|
||
|
|
lw $t8,4($a0)
|
||
|
|
addiu $a0,$a0,8
|
||
|
|
addiu $a2,$a2,-4
|
||
|
|
pixel $t2 $t7 $v0 $a3 $t0 $t1 0
|
||
|
|
pixel $t3 $t7 $v0 $a3 $t0 $t1 16
|
||
|
|
#if __mips==32 && __mips_isa_rev>=2
|
||
|
|
ins $t2,$t3,16,16
|
||
|
|
#else
|
||
|
|
sll $t3, 16
|
||
|
|
or $t2, $t2, $t3
|
||
|
|
#endif
|
||
|
|
pixel $t7 $t8 $v0 $a3 $t0 $t1 0
|
||
|
|
pixel $t3 $t8 $v0 $a3 $t0 $t1 16
|
||
|
|
#if __mips==32 && __mips_isa_rev>=2
|
||
|
|
ins $t7,$t3,16,16
|
||
|
|
#else
|
||
|
|
sll $t3, 16
|
||
|
|
or $t7, $t7, $t3
|
||
|
|
#endif
|
||
|
|
sw $t2,-8($a0)
|
||
|
|
sw $t7,-4($a0)
|
||
|
|
bgez $a2, loop_4pixels
|
||
|
|
|
||
|
|
tail:
|
||
|
|
/* the pixel count underran, restore it now */
|
||
|
|
addiu $a2,$a2,4
|
||
|
|
|
||
|
|
/* handle the last 0..3 pixels */
|
||
|
|
beqz $a2,done
|
||
|
|
|
||
|
|
loop_1pixel:
|
||
|
|
lhu $t7,0($a0)
|
||
|
|
addiu $a0,$a0,2
|
||
|
|
addiu $a2,$a2,-1
|
||
|
|
pixel $t2 $t7 $v0 $a3 $t0 $t1 0
|
||
|
|
sh $t2, -2($a0)
|
||
|
|
bnez $a2,loop_1pixel
|
||
|
|
|
||
|
|
done:
|
||
|
|
j $ra
|
||
|
|
.end scanline_col32cb16blend_mips
|