[x265] [PATCH] arm: Implement quant
ramya at multicorewareinc.com
ramya at multicorewareinc.com
Wed Apr 20 15:24:03 CEST 2016
# HG changeset patch
# User Ramya Sriraman<ramya at multicorewareinc.com>
# Date 1461158053 -19800
# Wed Apr 20 18:44:13 2016 +0530
# Node ID 72ae446412d6e25aa3d2aa8ecb657f9815fdb635
# Parent 4f83d465d11b3baa46e6089f73b0929266d4b722
arm: Implement quant
diff -r 4f83d465d11b -r 72ae446412d6 source/common/arm/asm-primitives.cpp
--- a/source/common/arm/asm-primitives.cpp Wed Mar 30 17:29:13 2016 +0530
+++ b/source/common/arm/asm-primitives.cpp Wed Apr 20 18:44:13 2016 +0530
@@ -820,6 +820,8 @@
p.chroma[X265_CSP_I444].pu[LUMA_24x32].filter_vsp = PFX(interp_4tap_vert_sp_24x32_neon);
p.chroma[X265_CSP_I444].pu[LUMA_48x64].filter_vsp = PFX(interp_4tap_vert_sp_48x64_neon);
+ // quant
+ p.quant = PFX(quant_neon);
}
if (cpuMask & X265_CPU_ARMV6)
{
diff -r 4f83d465d11b -r 72ae446412d6 source/common/arm/pixel-util.S
--- a/source/common/arm/pixel-util.S Wed Mar 30 17:29:13 2016 +0530
+++ b/source/common/arm/pixel-util.S Wed Apr 20 18:44:13 2016 +0530
@@ -1962,3 +1962,63 @@
bx lr
endfunc
+function x265_quant_neon
+ push {r4-r9}
+ ldr r4, [sp, #4* 6] //qbits
+ ldr r5, [sp, #4* 6 + 4] // add
+ ldr r6, [sp, #4* 6 + 8] // numcoeff
+ mov r7, #8
+ sub r7, r7 , r4 //-(qbits- 8)
+
+ lsr r6, r6 ,#2
+ mov r8, #0
+
+.loop_quant:
+
+ vld1.s16 d0, [r0]!
+ vmovl.s16 q1, d0 // coef[blockpos]
+
+ vclt.s32 q4, q1, #0
+ mov r9, #1
+ vdup.s32 q2, r9
+ vorr.s32 q4, q4, q2 // q4= sign
+
+ vabs.s32 q1, q1 // q1=level=abs(coef[blockpos])
+ vld1.s32 {q0}, [r1]! // quantCoeff[blockpos]
+ vmul.i32 q0, q0, q1 // q0=tmplevel = abs(level) * quantCoeff[blockpos];
+
+ vdup.s32 q2, r5
+ vadd.s32 q1, q0, q2 // q1= tmplevel+add
+ vdup.s32 q2, r4
+ vneg.s32 q2, q2
+ vshl.s32 q1, q1, q2 // q1= level =tmplevel+add >> qbits
+
+ vdup.s32 q2, r4
+ vshl.s32 q3, q1, q2 // q3 = level << qBits
+ vsub.s32 q8, q0, q3 // q8= tmplevel - (level << qBits)
+ vdup.s32 q2, r7
+ vshl.s32 q8, q8, q2 // q3= ((tmplevel - (level << qBits)) >> qBits8)
+ vst1.s32 {q8}, [r2]! // store deltaU
+
+ // numsig
+ vclz.s32 q2, q1
+ vshr.u32 q2, #5
+ vadd.u32 d4, d5
+ vpadd.u32 d4, d4
+ vmov.32 r12, d4[0]
+ mov r9, #4
+ sub r9, r9, r12
+ add r8, r9
+
+ vmul.s32 q2, q1, q4
+ vqmovn.s32 d0, q2
+ vst1.s16 d0, [r3]!
+
+ subs r6, #1
+ bne .loop_quant
+
+ mov r0, r8
+ pop {r4-r9}
+ bx lr
+endfunc
+
diff -r 4f83d465d11b -r 72ae446412d6 source/common/arm/pixel-util.h
--- a/source/common/arm/pixel-util.h Wed Mar 30 17:29:13 2016 +0530
+++ b/source/common/arm/pixel-util.h Wed Apr 20 18:44:13 2016 +0530
@@ -78,4 +78,6 @@
int x265_pixel_sa8d_32x32_neon(const pixel* pix1, intptr_t i_pix1, const pixel* pix2, intptr_t i_pix2);
int x265_pixel_sa8d_32x64_neon(const pixel* pix1, intptr_t i_pix1, const pixel* pix2, intptr_t i_pix2);
int x265_pixel_sa8d_64x64_neon(const pixel* pix1, intptr_t i_pix1, const pixel* pix2, intptr_t i_pix2);
+
+uint32_t x265_quant_neon(const int16_t* coef, const int32_t* quantCoeff, int32_t* deltaU, int16_t* qCoef, int qBits, int add, int numCoeff);
#endif // ifndef X265_PIXEL_UTIL_ARM_H
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