Chiebot-Mirror
/
FFmpeg
8
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

arm: vp9mc: Minor adjustments from review of the aarch64 version

Browse Source 
This work is sponsored by, and copyright, Google.

The speedup for the large horizontal filters is surprisingly
big on A7 and A53, while there's a minor slowdown (almost within
measurement noise) on A8 and A9.

                            Cortex    A7        A8        A9       A53
orig:
vp9_put_8tap_smooth_64h_neon:    20270.0   14447.3   19723.9   10910.9
new:
vp9_put_8tap_smooth_64h_neon:    20165.8   14466.5   19730.2   10668.8

Signed-off-by: Martin Storsjö <martin@martin.st>
pull/258/head
Martin Storsjö 9 years ago
parent 383d96aa22
commit 557c1675cf
2 changed files with 44 additions and 91 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 2
      libavcodec/arm/vp9dsp_init_arm.c
  2. 133
      libavcodec/arm/vp9mc_neon.S

2
libavcodec/arm/vp9dsp_init_arm.c
Unescape View File

@ -43,7 +43,7 @@ static void op##_##filter##sz##_hv_neon(uint8_t *dst, ptrdiff_t dst_stride,
const uint8_t *src, ptrdiff_t src_stride, \
int h, int mx, int my) \
{ \
LOCAL_ALIGNED_16(uint8_t, temp, [((sz < 64 ? 2 * sz : 64) + 8) * sz]); \
LOCAL_ALIGNED_16(uint8_t, temp, [((1 + (sz < 64)) * sz + 8) * sz]); \
/* We only need h + 7 lines, but the horizontal filter assumes an \
* even number of rows, so filter h + 8 lines here. */ \
ff_vp9_put_##filter##sz##_h_neon(temp, sz, \

133
libavcodec/arm/vp9mc_neon.S
Unescape View File

@ -20,60 +20,6 @@
#include "libavutil/arm/asm.S"
const regular_filter, align=4
.short 0, 1, -5, 126, 8, -3, 1, 0
.short -1, 3, -10, 122, 18, -6, 2, 0
.short -1, 4, -13, 118, 27, -9, 3, -1
.short -1, 4, -16, 112, 37, -11, 4, -1
.short -1, 5, -18, 105, 48, -14, 4, -1
.short -1, 5, -19, 97, 58, -16, 5, -1
.short -1, 6, -19, 88, 68, -18, 5, -1
.short -1, 6, -19, 78, 78, -19, 6, -1
.short -1, 5, -18, 68, 88, -19, 6, -1
.short -1, 5, -16, 58, 97, -19, 5, -1
.short -1, 4, -14, 48, 105, -18, 5, -1
.short -1, 4, -11, 37, 112, -16, 4, -1
.short -1, 3, -9, 27, 118, -13, 4, -1
.short 0, 2, -6, 18, 122, -10, 3, -1
.short 0, 1, -3, 8, 126, -5, 1, 0
endconst
const sharp_filter, align=4
.short -1, 3, -7, 127, 8, -3, 1, 0
.short -2, 5, -13, 125, 17, -6, 3, -1
.short -3, 7, -17, 121, 27, -10, 5, -2
.short -4, 9, -20, 115, 37, -13, 6, -2
.short -4, 10, -23, 108, 48, -16, 8, -3
.short -4, 10, -24, 100, 59, -19, 9, -3
.short -4, 11, -24, 90, 70, -21, 10, -4
.short -4, 11, -23, 80, 80, -23, 11, -4
.short -4, 10, -21, 70, 90, -24, 11, -4
.short -3, 9, -19, 59, 100, -24, 10, -4
.short -3, 8, -16, 48, 108, -23, 10, -4
.short -2, 6, -13, 37, 115, -20, 9, -4
.short -2, 5, -10, 27, 121, -17, 7, -3
.short -1, 3, -6, 17, 125, -13, 5, -2
.short 0, 1, -3, 8, 127, -7, 3, -1
endconst
const smooth_filter, align=4
.short -3, -1, 32, 64, 38, 1, -3, 0
.short -2, -2, 29, 63, 41, 2, -3, 0
.short -2, -2, 26, 63, 43, 4, -4, 0
.short -2, -3, 24, 62, 46, 5, -4, 0
.short -2, -3, 21, 60, 49, 7, -4, 0
.short -1, -4, 18, 59, 51, 9, -4, 0
.short -1, -4, 16, 57, 53, 12, -4, -1
.short -1, -4, 14, 55, 55, 14, -4, -1
.short -1, -4, 12, 53, 57, 16, -4, -1
.short 0, -4, 9, 51, 59, 18, -4, -1
.short 0, -4, 7, 49, 60, 21, -3, -2
.short 0, -4, 5, 46, 62, 24, -3, -2
.short 0, -4, 4, 43, 63, 26, -2, -2
.short 0, -3, 2, 41, 63, 29, -2, -2
.short 0, -3, 1, 38, 64, 32, -1, -3
endconst
@ All public functions in this file have the following signature:
@ typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
@ const uint8_t *ref, ptrdiff_t ref_stride,
@ -156,20 +102,21 @@ function ff_vp9_copy16_neon, export=1
endfunc
function ff_vp9_avg16_neon, export=1
ldr r12, [sp]
push {lr}
ldr r12, [sp, #4]
mov lr, r0
1:
vld1.8 {q2}, [r2], r3
vld1.8 {q0}, [r0, :128], r1
vld1.8 {q3}, [r2], r3
vrhadd.u8 q0, q0, q2
vld1.8 {q1}, [r0, :128]
sub r0, r0, r1
vld1.8 {q1}, [r0, :128], r1
vrhadd.u8 q1, q1, q3
subs r12, r12, #2
vst1.8 {q0}, [r0, :128], r1
vst1.8 {q1}, [r0, :128], r1
vst1.8 {q0}, [lr, :128], r1
vst1.8 {q1}, [lr, :128], r1
bne 1b
bx lr
pop {pc}
endfunc
function ff_vp9_copy8_neon, export=1
@ -218,7 +165,9 @@ function ff_vp9_copy4_neon, export=1
endfunc
function ff_vp9_avg4_neon, export=1
ldr r12, [sp]
push {lr}
ldr r12, [sp, #4]
mov lr, r0
1:
vld1.32 {d4[]}, [r2], r3
vld1.32 {d0[]}, [r0, :32], r1
@ -231,15 +180,14 @@ function ff_vp9_avg4_neon, export=1
vld1.32 {d7[]}, [r2], r3
vrhadd.u8 d2, d2, d6
vld1.32 {d3[]}, [r0, :32], r1
sub r0, r0, r1, lsl #2
subs r12, r12, #4
vst1.32 {d0[0]}, [r0, :32], r1
vst1.32 {d0[0]}, [lr, :32], r1
vrhadd.u8 d3, d3, d7
vst1.32 {d1[0]}, [r0, :32], r1
vst1.32 {d2[0]}, [r0, :32], r1
vst1.32 {d3[0]}, [r0, :32], r1
vst1.32 {d1[0]}, [lr, :32], r1
vst1.32 {d2[0]}, [lr, :32], r1
vst1.32 {d3[0]}, [lr, :32], r1
bne 1b
bx lr
pop {pc}
endfunc
@ Helper macros for vmul/vmla with a constant from either d0 or d1 depending on index
@ -327,7 +275,8 @@ function \type\()_8tap_\size\()h_\idx1\idx2
sub r3, r3, #8
.endif
@ Load the filter vector
vld1.16 {q0}, [r12,:128]
vld1.8 {d0}, [r12,:64]
vmovl.s8 q0, d0
1:
.if \size >= 16
mov r12, r5
@ -397,12 +346,12 @@ function \type\()_8tap_\size\()h_\idx1\idx2
.endif
@ Store and loop horizontally (for size >= 16)
.if \size >= 16
subs r12, r12, #16
vst1.8 {q1}, [r0,:128]!
vst1.8 {q3}, [r6,:128]!
beq 3f
vmov q8, q10
vmov q11, q13
subs r12, r12, #16
beq 3f
vld1.8 {q10}, [r2]!
vld1.8 {q13}, [r7]!
vmovl.u8 q9, d20
@ -444,7 +393,7 @@ do_8tap_h_size 4
do_8tap_h_size 8
do_8tap_h_size 16
.macro do_8tap_h_func type, filter, size
.macro do_8tap_h_func type, filter, offset, size
function ff_vp9_\type\()_\filter\()\size\()_h_neon, export=1
push {r4-r7}
.if \size >= 16
@ -455,9 +404,10 @@ function ff_vp9_\type\()_\filter\()\size\()_h_neon, export=1
ldr r4, [sp, #16]
ldr r5, [sp, #20]
.endif
movrel r12, \filter\()_filter-16
movrelx r12, X(ff_vp9_subpel_filters)
add r12, r12, 120*\offset - 8
cmp r5, #8
add r12, r12, r5, lsl #4
add r12, r12, r5, lsl #3
mov r5, #\size
.if \size >= 16
bge \type\()_8tap_16h_34
@ -470,12 +420,12 @@ endfunc
.endm
.macro do_8tap_h_filters size
do_8tap_h_func put, regular, \size
do_8tap_h_func avg, regular, \size
do_8tap_h_func put, sharp, \size
do_8tap_h_func avg, sharp, \size
do_8tap_h_func put, smooth, \size
do_8tap_h_func avg, smooth, \size
do_8tap_h_func put, regular, 1, \size
do_8tap_h_func avg, regular, 1, \size
do_8tap_h_func put, sharp, 2, \size
do_8tap_h_func avg, sharp, 2, \size
do_8tap_h_func put, smooth, 0, \size
do_8tap_h_func avg, smooth, 0, \size
.endm
do_8tap_h_filters 64
@ -590,7 +540,8 @@ do_8tap_h_filters 4
function \type\()_8tap_8v_\idx1\idx2
sub r2, r2, r3, lsl #1
sub r2, r2, r3
vld1.16 {q0}, [r12, :128]
vld1.8 {d0}, [r12, :64]
vmovl.s8 q0, d0
1:
mov r12, r4
@ -660,7 +611,8 @@ do_8tap_8v avg, 4, 3
function \type\()_8tap_4v_\idx1\idx2
sub r2, r2, r3, lsl #1
sub r2, r2, r3
vld1.16 {q0}, [r12, :128]
vld1.8 {d0}, [r12, :64]
vmovl.s8 q0, d0
vld1.32 {d2[]}, [r2], r3
vld1.32 {d3[]}, [r2], r3
@ -723,14 +675,15 @@ do_8tap_4v put, 4, 3
do_8tap_4v avg, 3, 4
do_8tap_4v avg, 4, 3
.macro do_8tap_v_func type, filter, size
.macro do_8tap_v_func type, filter, offset, size
function ff_vp9_\type\()_\filter\()\size\()_v_neon, export=1
push {r4-r5}
vpush {q4-q7}
ldr r4, [sp, #72]
ldr r5, [sp, #80]
movrel r12, \filter\()_filter-16
add r12, r12, r5, lsl #4
movrelx r12, X(ff_vp9_subpel_filters)
add r12, r12, 120*\offset - 8
add r12, r12, r5, lsl #3
cmp r5, #8
mov r5, #\size
.if \size >= 8
@ -744,12 +697,12 @@ endfunc
.endm
.macro do_8tap_v_filters size
do_8tap_v_func put, regular, \size
do_8tap_v_func avg, regular, \size
do_8tap_v_func put, sharp, \size
do_8tap_v_func avg, sharp, \size
do_8tap_v_func put, smooth, \size
do_8tap_v_func avg, smooth, \size
do_8tap_v_func put, regular, 1, \size
do_8tap_v_func avg, regular, 1, \size
do_8tap_v_func put, sharp, 2, \size
do_8tap_v_func avg, sharp, 2, \size
do_8tap_v_func put, smooth, 0, \size
do_8tap_v_func avg, smooth, 0, \size
.endm
do_8tap_v_filters 64

Write Preview
Loading…
Cancel
Save