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/*
* ARM NEON optimised MC functions for HEVC decoding
*
* Copyright (c) 2017 Alexandra Hájková
*
* 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"
.macro get_pixels4 bitdepth
function ff_hevc_get_pixels_4_\bitdepth\()_neon, export=1
@r0 dst, r1 dststride, r2 src, r3 srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
1:
.if \bitdepth == 8
vld1.32 {d0[0]}, [r2], r3
vld1.32 {d1[0]}, [r2], r3
vld1.32 {d2[0]}, [r2], r3
vld1.32 {d3[0]}, [r2], r3
vshll.u8 q8, d0, #6
vshll.u8 q9, d1, #6
vshll.u8 q10, d2, #6
vshll.u8 q11, d3, #6
.else
vld1.16 {d0}, [r2], r3
vld1.16 {d1}, [r2], r3
vld1.16 {d2}, [r2], r3
vld1.16 {d3}, [r2], r3
vshl.i16 d16, d0, #4
vshl.i16 d18, d1, #4
vshl.i16 d20, d2, #4
vshl.i16 d22, d3, #4
.endif
vst1.16 {d16}, [r0, :64], r1
vst1.16 {d18}, [r0, :64], r1
vst1.16 {d20}, [r0, :64], r1
vst1.16 {d22}, [r0, :64], r1
subs r12, #4
bgt 1b
bx lr
endfunc
.endm
.macro get_pixels8 bitdepth
function ff_hevc_get_pixels_8_\bitdepth\()_neon, export=1
@r0 dst, r1 dststride, r2 src, r3 srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
1:
.if \bitdepth == 8
vld1.8 {d0}, [r2], r3
vld1.8 {d1}, [r2], r3
vld1.8 {d2}, [r2], r3
vld1.8 {d3}, [r2], r3
vshll.u8 q8, d0, #6
vshll.u8 q9, d1, #6
vshll.u8 q10, d2, #6
vshll.u8 q11, d3, #6
.else
vld1.16 {d16-d17}, [r2], r3
vld1.16 {d18-d19}, [r2], r3
vld1.16 {d20-d21}, [r2], r3
vld1.16 {d22-d23}, [r2], r3
vshl.i16 q8, q8, #4
vshl.i16 q9, q9, #4
vshl.i16 q10, q10, #4
vshl.i16 q11, q11, #4
.endif
vst1.16 {d16-d17}, [r0, :64], r1
vst1.16 {d18-d19}, [r0, :64], r1
vst1.16 {d20-d21}, [r0, :64], r1
vst1.16 {d22-d23}, [r0, :64], r1
subs r12, #4
bgt 1b
bx lr
endfunc
.endm
.macro get_pixels12 bitdepth
function ff_hevc_get_pixels_12_\bitdepth\()_neon, export=1
@r0 - dst, r1 - dststride, r2 - src, r3 - srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
push {r4-r5, lr}
add r4, r0, #16
1:
.if \bitdepth == 8
add r5, r2, #8
vld1.8 {d0}, [r2], r3
vld1.32 {d4[0]}, [r5], r3
vld1.8 {d1}, [r2], r3
vld1.32 {d5[0]}, [r5], r3
vld1.8 {d2}, [r2], r3
vld1.32 {d6[0]}, [r5], r3
vld1.8 {d3}, [r2], r3
vld1.32 {d7[0]}, [r5], r3
vshll.u8 q8, d0, #6
vshll.u8 q12, d4, #6
vshll.u8 q9, d1, #6
vshll.u8 q13, d5, #6
vshll.u8 q10, d2, #6
vshll.u8 q14, d6, #6
vshll.u8 q11, d3, #6
vshll.u8 q15, d7, #6
.else
add r5, r2, #16
vld1.16 {d16-d17}, [r2], r3
vld1.16 {d24}, [r5], r3
vld1.16 {d18-d19}, [r2], r3
vld1.16 {d26}, [r5], r3
vld1.16 {d20-d21}, [r2], r3
vld1.16 {d28}, [r5], r3
vld1.16 {d22-d23}, [r2], r3
vld1.16 {d30}, [r5], r3
vshl.i16 q8, q8, #4
vshl.i16 d24, d24, #4
vshl.i16 q9, q9, #4
vshl.i16 d26, d26, #4
vshl.i16 q10, q10, #4
vshl.i16 d28, d28, #4
vshl.i16 q11, q11, #4
vshl.i16 d30, d30, #4
.endif
vst1.16 {d16-d17}, [r0, :64], r1
vst1.16 {d24}, [r4, :64], r1
vst1.16 {d18-d19}, [r0, :64], r1
vst1.16 {d26}, [r4, :64], r1
vst1.16 {d20-d21}, [r0, :64], r1
vst1.16 {d28}, [r4, :64], r1
vst1.16 {d22-d23}, [r0, :64], r1
vst1.16 {d30}, [r4, :64], r1
subs r12, #4
bgt 1b
pop {r4-r5, pc}
endfunc
.endm
@8 bitdepth case
.macro process_8 load
vld1.8 {d0-d1}, [\load], r3
vld1.8 {d2-d3}, [\load], r3
vld1.8 {d4-d5}, [\load], r3
vld1.8 {d6-d7}, [\load], r3
vshll.u8 q8, d0, #6
vshll.u8 q9, d1, #6
vshll.u8 q10, d2, #6
vshll.u8 q11, d3, #6
vshll.u8 q12, d4, #6
vshll.u8 q13, d5, #6
vshll.u8 q14, d6, #6
vshll.u8 q15, d7, #6
.endm
@10 bitdepth case
.macro process_10 load
vld1.16 {d16-d19}, [\load], r3
vld1.16 {d20-d23}, [\load], r3
vld1.16 {d24-d27}, [\load], r3
vld1.16 {d28-d31}, [\load], r3
vshl.i16 q8, q8, #4
vshl.i16 q9, q9, #4
vshl.i16 q10, q10, #4
vshl.i16 q11, q11, #4
vshl.i16 q12, q12, #4
vshl.i16 q13, q13, #4
vshl.i16 q14, q14, #4
vshl.i16 q15, q15, #4
.endm
.macro store_4x16 store
vst1.16 {d16-d19}, [\store, :128], r1
vst1.16 {d20-d23}, [\store, :128], r1
vst1.16 {d24-d27}, [\store, :128], r1
vst1.16 {d28-d31}, [\store, :128], r1
.endm
.macro get_pixels16 bitdepth
function ff_hevc_get_pixels_16_\bitdepth\()_neon, export=1
@r0 dst, r1 dststride, r2 src, r3 srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
1:
.if \bitdepth == 8
process_8 r2
.else
process_10 r2
.endif
store_4x16 r0
subs r12, #4
bgt 1b
bx lr
endfunc
.endm
.macro get_pixels24 bitdepth
function ff_hevc_get_pixels_24_\bitdepth\()_neon, export=1
@r0 dst, r1 dststride, r2 src, r3 srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
push {r0-r4, lr}
push {r12}
bl X(ff_hevc_get_pixels_8_\bitdepth\()_neon)
pop {r12}
pop {r0-r4, lr}
.if \bitdepth == 8
add r2, #8
.else
add r2, #16
.endif
add r0, #16
b X(ff_hevc_get_pixels_16_\bitdepth\()_neon)
endfunc
.endm
.macro get_pixels32 bitdepth
function ff_hevc_get_pixels_32_\bitdepth\()_neon, export=1
@r0 dst, r1 dststride, r2 src, r3 srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
push {r4-r5, lr}
.if \bitdepth == 8
add r4, r2, #16
.else
add r4, r2, #32
.endif
add r5, r0, #32
1:
.if \bitdepth == 8
process_8 r2
.else
process_10 r2
.endif
store_4x16 r0
.if \bitdepth == 8
process_8 r4
.else
process_10 r4
.endif
store_4x16 r5
subs r12, #4
bgt 1b
pop {r4-r5, pc}
endfunc
.endm
.macro get_pixels48 bitdepth
function ff_hevc_get_pixels_48_\bitdepth\()_neon, export=1
@r0 dst, r1 dststride, r2 src, r3 srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
push {r0-r4, lr}
push {r12}
bl X(ff_hevc_get_pixels_16_\bitdepth\()_neon)
pop {r12}
pop {r0-r4, lr}
.if \bitdepth == 8
add r2, #16
.else
add r2, #32
.endif
add r0, #32
b X(ff_hevc_get_pixels_32_\bitdepth\()_neon)
endfunc
.endm
.macro get_pixels64 bitdepth
function ff_hevc_get_pixels_64_\bitdepth\()_neon, export=1
@r0 dst, r1 dststride, r2 src, r3 srcstride
ldr r12, [sp] @height
cmp r12, #0
it eq
bxeq lr
push {r4-r9, lr}
.if \bitdepth == 8
add r4, r2, #16
add r6, r4, #16
add r8, r6, #16
.else
add r4, r2, #32
add r6, r4, #32
add r8, r6, #32
.endif
add r5, r0, #32
add r7, r5, #32
add r9, r7, #32
1:
.if \bitdepth == 8
process_8 r2
.else
process_10 r2
.endif
store_4x16 r0
.if \bitdepth == 8
process_8 r4
.else
process_10 r4
.endif
store_4x16 r5
.if \bitdepth == 8
process_8 r6
.else
process_10 r6
.endif
store_4x16 r7
.if \bitdepth == 8
process_8 r8
.else
process_10 r8
.endif
store_4x16 r9
subs r12, #4
bgt 1b
pop {r4-r9, pc}
endfunc
.endm
get_pixels4 8
get_pixels4 10
get_pixels8 8
get_pixels8 10
get_pixels12 8
get_pixels12 10
get_pixels16 8
get_pixels16 10
get_pixels24 8
get_pixels24 10
get_pixels32 8
get_pixels32 10
get_pixels48 8
get_pixels48 10
get_pixels64 8
get_pixels64 10
|
