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/*
* Copyright 2012 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBlitRow.h"
#include "SkColorPriv.h"
#include "SkDither.h"
#include "SkMathPriv.h"
#include "SkUtils.h"
#include "SkUtilsArm.h"
// Define USE_NEON_CODE to indicate that we need to build NEON routines
#define USE_NEON_CODE (!SK_ARM_NEON_IS_NONE)
// Define USE_ARM_CODE to indicate that we need to build ARM routines
#define USE_ARM_CODE (!SK_ARM_NEON_IS_ALWAYS)
#if USE_NEON_CODE
#include "SkBlitRow_opts_arm_neon.h"
#endif
#if USE_ARM_CODE
static void S32A_D565_Opaque(uint16_t* SK_RESTRICT dst,
const SkPMColor* SK_RESTRICT src, int count,
U8CPU alpha, int /*x*/, int /*y*/) {
SkASSERT(255 == alpha);
asm volatile (
"1: \n\t"
"ldr r3, [%[src]], #4 \n\t"
"cmp r3, #0xff000000 \n\t"
"blo 2f \n\t"
"and r4, r3, #0x0000f8 \n\t"
"and r5, r3, #0x00fc00 \n\t"
"and r6, r3, #0xf80000 \n\t"
#ifdef SK_ARM_HAS_EDSP
"pld [r1, #32] \n\t"
#endif
"lsl r3, r4, #8 \n\t"
"orr r3, r3, r5, lsr #5 \n\t"
"orr r3, r3, r6, lsr #19 \n\t"
"subs %[count], %[count], #1 \n\t"
"strh r3, [%[dst]], #2 \n\t"
"bne 1b \n\t"
"b 4f \n\t"
"2: \n\t"
"lsrs r7, r3, #24 \n\t"
"beq 3f \n\t"
"ldrh r4, [%[dst]] \n\t"
"rsb r7, r7, #255 \n\t"
"and r6, r4, #0x001f \n\t"
#if SK_ARM_ARCH <= 6
"lsl r5, r4, #21 \n\t"
"lsr r5, r5, #26 \n\t"
#else
"ubfx r5, r4, #5, #6 \n\t"
#endif
#ifdef SK_ARM_HAS_EDSP
"pld [r0, #16] \n\t"
#endif
"lsr r4, r4, #11 \n\t"
#ifdef SK_ARM_HAS_EDSP
"smulbb r6, r6, r7 \n\t"
"smulbb r5, r5, r7 \n\t"
"smulbb r4, r4, r7 \n\t"
#else
"mul r6, r6, r7 \n\t"
"mul r5, r5, r7 \n\t"
"mul r4, r4, r7 \n\t"
#endif
#if SK_ARM_ARCH >= 6
"uxtb r7, r3, ROR #16 \n\t"
"uxtb ip, r3, ROR #8 \n\t"
#else
"mov ip, #0xff \n\t"
"and r7, ip, r3, ROR #16 \n\t"
"and ip, ip, r3, ROR #8 \n\t"
#endif
"and r3, r3, #0xff \n\t"
"add r6, r6, #16 \n\t"
"add r5, r5, #32 \n\t"
"add r4, r4, #16 \n\t"
"add r6, r6, r6, lsr #5 \n\t"
"add r5, r5, r5, lsr #6 \n\t"
"add r4, r4, r4, lsr #5 \n\t"
"add r6, r7, r6, lsr #5 \n\t"
"add r5, ip, r5, lsr #6 \n\t"
"add r4, r3, r4, lsr #5 \n\t"
"lsr r6, r6, #3 \n\t"
"and r5, r5, #0xfc \n\t"
"and r4, r4, #0xf8 \n\t"
"orr r6, r6, r5, lsl #3 \n\t"
"orr r4, r6, r4, lsl #8 \n\t"
"strh r4, [%[dst]], #2 \n\t"
#ifdef SK_ARM_HAS_EDSP
"pld [r1, #32] \n\t"
#endif
"subs %[count], %[count], #1 \n\t"
"bne 1b \n\t"
"b 4f \n\t"
"3: \n\t"
"subs %[count], %[count], #1 \n\t"
"add %[dst], %[dst], #2 \n\t"
"bne 1b \n\t"
"4: \n\t"
: [dst] "+r" (dst), [src] "+r" (src), [count] "+r" (count)
:
: "memory", "cc", "r3", "r4", "r5", "r6", "r7", "ip"
);
}
static void S32A_Opaque_BlitRow32_arm(SkPMColor* SK_RESTRICT dst,
const SkPMColor* SK_RESTRICT src,
int count, U8CPU alpha) {
SkASSERT(255 == alpha);
asm volatile (
"cmp %[count], #0 \n\t" /* comparing count with 0 */
"beq 3f \n\t" /* if zero exit */
"mov ip, #0xff \n\t" /* load the 0xff mask in ip */
"orr ip, ip, ip, lsl #16 \n\t" /* convert it to 0xff00ff in ip */
"cmp %[count], #2 \n\t" /* compare count with 2 */
"blt 2f \n\t" /* if less than 2 -> single loop */
/* Double Loop */
"1: \n\t" /* <double loop> */
"ldm %[src]!, {r5,r6} \n\t" /* load the src(s) at r5-r6 */
"ldm %[dst], {r7,r8} \n\t" /* loading dst(s) into r7-r8 */
"lsr r4, r5, #24 \n\t" /* extracting the alpha from source and storing it to r4 */
/* ----------- */
"and r9, ip, r7 \n\t" /* r9 = br masked by ip */
"rsb r4, r4, #256 \n\t" /* subtracting the alpha from 256 -> r4=scale */
"and r10, ip, r7, lsr #8 \n\t" /* r10 = ag masked by ip */
"mul r9, r9, r4 \n\t" /* br = br * scale */
"mul r10, r10, r4 \n\t" /* ag = ag * scale */
"and r9, ip, r9, lsr #8 \n\t" /* lsr br by 8 and mask it */
"and r10, r10, ip, lsl #8 \n\t" /* mask ag with reverse mask */
"lsr r4, r6, #24 \n\t" /* extracting the alpha from source and storing it to r4 */
"orr r7, r9, r10 \n\t" /* br | ag*/
"add r7, r5, r7 \n\t" /* dst = src + calc dest(r7) */
"rsb r4, r4, #256 \n\t" /* subtracting the alpha from 255 -> r4=scale */
/* ----------- */
"and r9, ip, r8 \n\t" /* r9 = br masked by ip */
"and r10, ip, r8, lsr #8 \n\t" /* r10 = ag masked by ip */
"mul r9, r9, r4 \n\t" /* br = br * scale */
"sub %[count], %[count], #2 \n\t"
"mul r10, r10, r4 \n\t" /* ag = ag * scale */
"and r9, ip, r9, lsr #8 \n\t" /* lsr br by 8 and mask it */
"and r10, r10, ip, lsl #8 \n\t" /* mask ag with reverse mask */
"cmp %[count], #1 \n\t" /* comparing count with 1 */
"orr r8, r9, r10 \n\t" /* br | ag */
"add r8, r6, r8 \n\t" /* dst = src + calc dest(r8) */
/* ----------------- */
"stm %[dst]!, {r7,r8} \n\t" /* *dst = r7, increment dst by two (each times 4) */
/* ----------------- */
"bgt 1b \n\t" /* if greater than 1 -> reloop */
"blt 3f \n\t" /* if less than 1 -> exit */
/* Single Loop */
"2: \n\t" /* <single loop> */
"ldr r5, [%[src]], #4 \n\t" /* load the src pointer into r5 r5=src */
"ldr r7, [%[dst]] \n\t" /* loading dst into r7 */
"lsr r4, r5, #24 \n\t" /* extracting the alpha from source and storing it to r4 */
/* ----------- */
"and r9, ip, r7 \n\t" /* r9 = br masked by ip */
"rsb r4, r4, #256 \n\t" /* subtracting the alpha from 256 -> r4=scale */
"and r10, ip, r7, lsr #8 \n\t" /* r10 = ag masked by ip */
"mul r9, r9, r4 \n\t" /* br = br * scale */
"mul r10, r10, r4 \n\t" /* ag = ag * scale */
"and r9, ip, r9, lsr #8 \n\t" /* lsr br by 8 and mask it */
"and r10, r10, ip, lsl #8 \n\t" /* mask ag */
"orr r7, r9, r10 \n\t" /* br | ag */
"add r7, r5, r7 \n\t" /* *dst = src + calc dest(r7) */
/* ----------------- */
"str r7, [%[dst]], #4 \n\t" /* *dst = r7, increment dst by one (times 4) */
/* ----------------- */
"3: \n\t" /* <exit> */
: [dst] "+r" (dst), [src] "+r" (src), [count] "+r" (count)
:
: "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "ip", "memory"
);
}
/*
* ARM asm version of S32A_Blend_BlitRow32
*/
void S32A_Blend_BlitRow32_arm(SkPMColor* SK_RESTRICT dst,
const SkPMColor* SK_RESTRICT src,
int count, U8CPU alpha) {
asm volatile (
"cmp %[count], #0 \n\t" /* comparing count with 0 */
"beq 3f \n\t" /* if zero exit */
"mov r12, #0xff \n\t" /* load the 0xff mask in r12 */
"orr r12, r12, r12, lsl #16 \n\t" /* convert it to 0xff00ff in r12 */
/* src1,2_scale */
"add %[alpha], %[alpha], #1 \n\t" /* loading %[alpha]=src_scale=alpha+1 */
"cmp %[count], #2 \n\t" /* comparing count with 2 */
"blt 2f \n\t" /* if less than 2 -> single loop */
/* Double Loop */
"1: \n\t" /* <double loop> */
"ldm %[src]!, {r5, r6} \n\t" /* loading src pointers into r5 and r6 */
"ldm %[dst], {r7, r8} \n\t" /* loading dst pointers into r7 and r8 */
/* dst1_scale and dst2_scale*/
"lsr r9, r5, #24 \n\t" /* src >> 24 */
"lsr r10, r6, #24 \n\t" /* src >> 24 */
#ifdef SK_ARM_HAS_EDSP
"smulbb r9, r9, %[alpha] \n\t" /* r9 = SkMulS16 r9 with src_scale */
"smulbb r10, r10, %[alpha] \n\t" /* r10 = SkMulS16 r10 with src_scale */
#else
"mul r9, r9, %[alpha] \n\t" /* r9 = SkMulS16 r9 with src_scale */
"mul r10, r10, %[alpha] \n\t" /* r10 = SkMulS16 r10 with src_scale */
#endif
"lsr r9, r9, #8 \n\t" /* r9 >> 8 */
"lsr r10, r10, #8 \n\t" /* r10 >> 8 */
"rsb r9, r9, #256 \n\t" /* dst1_scale = r9 = 255 - r9 + 1 */
"rsb r10, r10, #256 \n\t" /* dst2_scale = r10 = 255 - r10 + 1 */
/* ---------------------- */
/* src1, src1_scale */
"and r11, r12, r5, lsr #8 \n\t" /* ag = r11 = r5 masked by r12 lsr by #8 */
"and r4, r12, r5 \n\t" /* rb = r4 = r5 masked by r12 */
"mul r11, r11, %[alpha] \n\t" /* ag = r11 times src_scale */
"mul r4, r4, %[alpha] \n\t" /* rb = r4 times src_scale */
"and r11, r11, r12, lsl #8 \n\t" /* ag masked by reverse mask (r12) */
"and r4, r12, r4, lsr #8 \n\t" /* rb masked by mask (r12) */
"orr r5, r11, r4 \n\t" /* r5 = (src1, src_scale) */
/* dst1, dst1_scale */
"and r11, r12, r7, lsr #8 \n\t" /* ag = r11 = r7 masked by r12 lsr by #8 */
"and r4, r12, r7 \n\t" /* rb = r4 = r7 masked by r12 */
"mul r11, r11, r9 \n\t" /* ag = r11 times dst_scale (r9) */
"mul r4, r4, r9 \n\t" /* rb = r4 times dst_scale (r9) */
"and r11, r11, r12, lsl #8 \n\t" /* ag masked by reverse mask (r12) */
"and r4, r12, r4, lsr #8 \n\t" /* rb masked by mask (r12) */
"orr r9, r11, r4 \n\t" /* r9 = (dst1, dst_scale) */
/* ---------------------- */
"add r9, r5, r9 \n\t" /* *dst = src plus dst both scaled */
/* ---------------------- */
/* ====================== */
/* src2, src2_scale */
"and r11, r12, r6, lsr #8 \n\t" /* ag = r11 = r6 masked by r12 lsr by #8 */
"and r4, r12, r6 \n\t" /* rb = r4 = r6 masked by r12 */
"mul r11, r11, %[alpha] \n\t" /* ag = r11 times src_scale */
"mul r4, r4, %[alpha] \n\t" /* rb = r4 times src_scale */
"and r11, r11, r12, lsl #8 \n\t" /* ag masked by reverse mask (r12) */
"and r4, r12, r4, lsr #8 \n\t" /* rb masked by mask (r12) */
"orr r6, r11, r4 \n\t" /* r6 = (src2, src_scale) */
/* dst2, dst2_scale */
"and r11, r12, r8, lsr #8 \n\t" /* ag = r11 = r8 masked by r12 lsr by #8 */
"and r4, r12, r8 \n\t" /* rb = r4 = r8 masked by r12 */
"mul r11, r11, r10 \n\t" /* ag = r11 times dst_scale (r10) */
"mul r4, r4, r10 \n\t" /* rb = r4 times dst_scale (r6) */
"and r11, r11, r12, lsl #8 \n\t" /* ag masked by reverse mask (r12) */
"and r4, r12, r4, lsr #8 \n\t" /* rb masked by mask (r12) */
"orr r10, r11, r4 \n\t" /* r10 = (dst2, dst_scale) */
"sub %[count], %[count], #2 \n\t" /* decrease count by 2 */
/* ---------------------- */
"add r10, r6, r10 \n\t" /* *dst = src plus dst both scaled */
/* ---------------------- */
"cmp %[count], #1 \n\t" /* compare count with 1 */
/* ----------------- */
"stm %[dst]!, {r9, r10} \n\t" /* copy r9 and r10 to r7 and r8 respectively */
/* ----------------- */
"bgt 1b \n\t" /* if %[count] greater than 1 reloop */
"blt 3f \n\t" /* if %[count] less than 1 exit */
/* else get into the single loop */
/* Single Loop */
"2: \n\t" /* <single loop> */
"ldr r5, [%[src]], #4 \n\t" /* loading src pointer into r5: r5=src */
"ldr r7, [%[dst]] \n\t" /* loading dst pointer into r7: r7=dst */
"lsr r6, r5, #24 \n\t" /* src >> 24 */
"and r8, r12, r5, lsr #8 \n\t" /* ag = r8 = r5 masked by r12 lsr by #8 */
#ifdef SK_ARM_HAS_EDSP
"smulbb r6, r6, %[alpha] \n\t" /* r6 = SkMulS16 with src_scale */
#else
"mul r6, r6, %[alpha] \n\t" /* r6 = SkMulS16 with src_scale */
#endif
"and r9, r12, r5 \n\t" /* rb = r9 = r5 masked by r12 */
"lsr r6, r6, #8 \n\t" /* r6 >> 8 */
"mul r8, r8, %[alpha] \n\t" /* ag = r8 times scale */
"rsb r6, r6, #256 \n\t" /* r6 = 255 - r6 + 1 */
/* src, src_scale */
"mul r9, r9, %[alpha] \n\t" /* rb = r9 times scale */
"and r8, r8, r12, lsl #8 \n\t" /* ag masked by reverse mask (r12) */
"and r9, r12, r9, lsr #8 \n\t" /* rb masked by mask (r12) */
"orr r10, r8, r9 \n\t" /* r10 = (scr, src_scale) */
/* dst, dst_scale */
"and r8, r12, r7, lsr #8 \n\t" /* ag = r8 = r7 masked by r12 lsr by #8 */
"and r9, r12, r7 \n\t" /* rb = r9 = r7 masked by r12 */
"mul r8, r8, r6 \n\t" /* ag = r8 times scale (r6) */
"mul r9, r9, r6 \n\t" /* rb = r9 times scale (r6) */
"and r8, r8, r12, lsl #8 \n\t" /* ag masked by reverse mask (r12) */
"and r9, r12, r9, lsr #8 \n\t" /* rb masked by mask (r12) */
"orr r7, r8, r9 \n\t" /* r7 = (dst, dst_scale) */
"add r10, r7, r10 \n\t" /* *dst = src plus dst both scaled */
/* ----------------- */
"str r10, [%[dst]], #4 \n\t" /* *dst = r10, postincrement dst by one (times 4) */
/* ----------------- */
"3: \n\t" /* <exit> */
: [dst] "+r" (dst), [src] "+r" (src), [count] "+r" (count), [alpha] "+r" (alpha)
:
: "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "memory"
);
}
///////////////////////////////////////////////////////////////////////////////
static const SkBlitRow::Proc16 sk_blitrow_platform_565_procs_arm[] = {
// no dither
// NOTE: For the functions below, we don't have a special version
// that assumes that each source pixel is opaque. But our S32A is
// still faster than the default, so use it.
S32A_D565_Opaque, // S32_D565_Opaque
NULL, // S32_D565_Blend
S32A_D565_Opaque, // S32A_D565_Opaque
NULL, // S32A_D565_Blend
// dither
NULL, // S32_D565_Opaque_Dither
NULL, // S32_D565_Blend_Dither
NULL, // S32A_D565_Opaque_Dither
NULL, // S32A_D565_Blend_Dither
};
static const SkBlitRow::ColorProc16 sk_blitrow_platform_565_colorprocs_arm[] = {
NULL, // Color32A_D565,
NULL, // Color32A_D565_Dither
};
static const SkBlitRow::Proc32 sk_blitrow_platform_32_procs_arm[] = {
NULL, // S32_Opaque,
NULL, // S32_Blend,
S32A_Opaque_BlitRow32_arm, // S32A_Opaque,
S32A_Blend_BlitRow32_arm // S32A_Blend
};
#endif // USE_ARM_CODE
SkBlitRow::Proc16 SkBlitRow::PlatformFactory565(unsigned flags) {
return SK_ARM_NEON_WRAP(sk_blitrow_platform_565_procs_arm)[flags];
}
SkBlitRow::ColorProc16 SkBlitRow::PlatformColorFactory565(unsigned flags) {
return SK_ARM_NEON_WRAP(sk_blitrow_platform_565_colorprocs_arm)[flags];
}
SkBlitRow::Proc32 SkBlitRow::PlatformProcs32(unsigned flags) {
return SK_ARM_NEON_WRAP(sk_blitrow_platform_32_procs_arm)[flags];
}
///////////////////////////////////////////////////////////////////////////////
#define Color32_arm NULL
SkBlitRow::ColorProc SkBlitRow::PlatformColorProc() {
return SK_ARM_NEON_WRAP(Color32_arm);
}
|
