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/*
* Copyright (C) 2009 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.
*/
#ifdef ANDROID
#include <machine/cpu-features.h>
#endif
#include "SkBitmapProcState.h"
#include "SkColorPriv.h"
#include "SkUtils.h"
#if __ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN)
void SI8_D16_nofilter_DX_arm(
const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count,
uint16_t* SK_RESTRICT colors) __attribute__((optimize("O1")));
void SI8_D16_nofilter_DX_arm(const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count, uint16_t* SK_RESTRICT colors) {
SkASSERT(count > 0 && colors != NULL);
SkASSERT(s.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask));
SkASSERT(s.fDoFilter == false);
const uint16_t* SK_RESTRICT table = s.fBitmap->getColorTable()->lock16BitCache();
const uint8_t* SK_RESTRICT srcAddr = (const uint8_t*)s.fBitmap->getPixels();
// buffer is y32, x16, x16, x16, x16, x16
// bump srcAddr to the proper row, since we're told Y never changes
SkASSERT((unsigned)xy[0] < (unsigned)s.fBitmap->height());
srcAddr = (const uint8_t*)((const char*)srcAddr +
xy[0] * s.fBitmap->rowBytes());
uint8_t src;
if (1 == s.fBitmap->width()) {
src = srcAddr[0];
uint16_t dstValue = table[src];
sk_memset16(colors, dstValue, count);
} else {
int i;
int count8 = count >> 3;
const uint16_t* SK_RESTRICT xx = (const uint16_t*)(xy + 1);
asm volatile (
"cmp %[count8], #0 \n\t" // compare loop counter with 0
"beq 2f \n\t" // if loop counter == 0, exit
"1: \n\t"
"ldmia %[xx]!, {r5, r7, r9, r11} \n\t" // load ptrs to pixels 0-7
"subs %[count8], %[count8], #1 \n\t" // decrement loop counter
"uxth r4, r5 \n\t" // extract ptr 0
"mov r5, r5, lsr #16 \n\t" // extract ptr 1
"uxth r6, r7 \n\t" // extract ptr 2
"mov r7, r7, lsr #16 \n\t" // extract ptr 3
"ldrb r4, [%[srcAddr], r4] \n\t" // load pixel 0 from image
"uxth r8, r9 \n\t" // extract ptr 4
"ldrb r5, [%[srcAddr], r5] \n\t" // load pixel 1 from image
"mov r9, r9, lsr #16 \n\t" // extract ptr 5
"ldrb r6, [%[srcAddr], r6] \n\t" // load pixel 2 from image
"uxth r10, r11 \n\t" // extract ptr 6
"ldrb r7, [%[srcAddr], r7] \n\t" // load pixel 3 from image
"mov r11, r11, lsr #16 \n\t" // extract ptr 7
"ldrb r8, [%[srcAddr], r8] \n\t" // load pixel 4 from image
"add r4, r4, r4 \n\t" // double pixel 0 for RGB565 lookup
"ldrb r9, [%[srcAddr], r9] \n\t" // load pixel 5 from image
"add r5, r5, r5 \n\t" // double pixel 1 for RGB565 lookup
"ldrb r10, [%[srcAddr], r10] \n\t" // load pixel 6 from image
"add r6, r6, r6 \n\t" // double pixel 2 for RGB565 lookup
"ldrb r11, [%[srcAddr], r11] \n\t" // load pixel 7 from image
"add r7, r7, r7 \n\t" // double pixel 3 for RGB565 lookup
"ldrh r4, [%[table], r4] \n\t" // load pixel 0 RGB565 from colmap
"add r8, r8, r8 \n\t" // double pixel 4 for RGB565 lookup
"ldrh r5, [%[table], r5] \n\t" // load pixel 1 RGB565 from colmap
"add r9, r9, r9 \n\t" // double pixel 5 for RGB565 lookup
"ldrh r6, [%[table], r6] \n\t" // load pixel 2 RGB565 from colmap
"add r10, r10, r10 \n\t" // double pixel 6 for RGB565 lookup
"ldrh r7, [%[table], r7] \n\t" // load pixel 3 RGB565 from colmap
"add r11, r11, r11 \n\t" // double pixel 7 for RGB565 lookup
"ldrh r8, [%[table], r8] \n\t" // load pixel 4 RGB565 from colmap
"ldrh r9, [%[table], r9] \n\t" // load pixel 5 RGB565 from colmap
"ldrh r10, [%[table], r10] \n\t" // load pixel 6 RGB565 from colmap
"ldrh r11, [%[table], r11] \n\t" // load pixel 7 RGB565 from colmap
"pkhbt r5, r4, r5, lsl #16 \n\t" // pack pixels 0 and 1
"pkhbt r6, r6, r7, lsl #16 \n\t" // pack pixels 2 and 3
"pkhbt r8, r8, r9, lsl #16 \n\t" // pack pixels 4 and 5
"pkhbt r10, r10, r11, lsl #16 \n\t" // pack pixels 6 and 7
"stmia %[colors]!, {r5, r6, r8, r10} \n\t" // store last 8 pixels
"bgt 1b \n\t" // loop if counter > 0
"2: \n\t"
: [xx] "+r" (xx), [count8] "+r" (count8), [colors] "+r" (colors)
: [table] "r" (table), [srcAddr] "r" (srcAddr)
: "memory", "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11"
);
for (i = (count & 7); i > 0; --i) {
src = srcAddr[*xx++]; *colors++ = table[src];
}
}
s.fBitmap->getColorTable()->unlock16BitCache();
}
void SI8_opaque_D32_nofilter_DX_arm(
const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count,
SkPMColor* SK_RESTRICT colors) __attribute__((optimize("O1")));
void SI8_opaque_D32_nofilter_DX_arm(const SkBitmapProcState& s,
const uint32_t* SK_RESTRICT xy,
int count, SkPMColor* SK_RESTRICT colors) {
SkASSERT(count > 0 && colors != NULL);
SkASSERT(s.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask));
SkASSERT(s.fDoFilter == false);
const SkPMColor* SK_RESTRICT table = s.fBitmap->getColorTable()->lockColors();
const uint8_t* SK_RESTRICT srcAddr = (const uint8_t*)s.fBitmap->getPixels();
// buffer is y32, x16, x16, x16, x16, x16
// bump srcAddr to the proper row, since we're told Y never changes
SkASSERT((unsigned)xy[0] < (unsigned)s.fBitmap->height());
srcAddr = (const uint8_t*)((const char*)srcAddr + xy[0] * s.fBitmap->rowBytes());
if (1 == s.fBitmap->width()) {
uint8_t src = srcAddr[0];
SkPMColor dstValue = table[src];
sk_memset32(colors, dstValue, count);
} else {
const uint16_t* xx = (const uint16_t*)(xy + 1);
asm volatile (
"subs %[count], %[count], #8 \n\t" // decrement count by 8, set flags
"blt 2f \n\t" // if count < 0, branch to singles
"1: \n\t" // eights loop
"ldmia %[xx]!, {r5, r7, r9, r11} \n\t" // load ptrs to pixels 0-7
"uxth r4, r5 \n\t" // extract ptr 0
"mov r5, r5, lsr #16 \n\t" // extract ptr 1
"uxth r6, r7 \n\t" // extract ptr 2
"mov r7, r7, lsr #16 \n\t" // extract ptr 3
"ldrb r4, [%[srcAddr], r4] \n\t" // load pixel 0 from image
"uxth r8, r9 \n\t" // extract ptr 4
"ldrb r5, [%[srcAddr], r5] \n\t" // load pixel 1 from image
"mov r9, r9, lsr #16 \n\t" // extract ptr 5
"ldrb r6, [%[srcAddr], r6] \n\t" // load pixel 2 from image
"uxth r10, r11 \n\t" // extract ptr 6
"ldrb r7, [%[srcAddr], r7] \n\t" // load pixel 3 from image
"mov r11, r11, lsr #16 \n\t" // extract ptr 7
"ldrb r8, [%[srcAddr], r8] \n\t" // load pixel 4 from image
"ldrb r9, [%[srcAddr], r9] \n\t" // load pixel 5 from image
"ldrb r10, [%[srcAddr], r10] \n\t" // load pixel 6 from image
"ldrb r11, [%[srcAddr], r11] \n\t" // load pixel 7 from image
"ldr r4, [%[table], r4, lsl #2] \n\t" // load pixel 0 SkPMColor from colmap
"ldr r5, [%[table], r5, lsl #2] \n\t" // load pixel 1 SkPMColor from colmap
"ldr r6, [%[table], r6, lsl #2] \n\t" // load pixel 2 SkPMColor from colmap
"ldr r7, [%[table], r7, lsl #2] \n\t" // load pixel 3 SkPMColor from colmap
"ldr r8, [%[table], r8, lsl #2] \n\t" // load pixel 4 SkPMColor from colmap
"ldr r9, [%[table], r9, lsl #2] \n\t" // load pixel 5 SkPMColor from colmap
"ldr r10, [%[table], r10, lsl #2] \n\t" // load pixel 6 SkPMColor from colmap
"ldr r11, [%[table], r11, lsl #2] \n\t" // load pixel 7 SkPMColor from colmap
"subs %[count], %[count], #8 \n\t" // decrement loop counter
"stmia %[colors]!, {r4-r11} \n\t" // store 8 pixels
"bge 1b \n\t" // loop if counter >= 0
"2: \n\t"
"adds %[count], %[count], #8 \n\t" // fix up counter, set flags
"beq 4f \n\t" // if count == 0, branch to exit
"3: \n\t" // singles loop
"ldrh r4, [%[xx]], #2 \n\t" // load pixel ptr
"subs %[count], %[count], #1 \n\t" // decrement loop counter
"ldrb r5, [%[srcAddr], r4] \n\t" // load pixel from image
"ldr r6, [%[table], r5, lsl #2] \n\t" // load SkPMColor from colmap
"str r6, [%[colors]], #4 \n\t" // store pixel, update ptr
"bne 3b \n\t" // loop if counter != 0
"4: \n\t" // exit
: [xx] "+r" (xx), [count] "+r" (count), [colors] "+r" (colors)
: [table] "r" (table), [srcAddr] "r" (srcAddr)
: "memory", "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11"
);
}
s.fBitmap->getColorTable()->unlockColors(false);
}
#endif //__ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN)
///////////////////////////////////////////////////////////////////////////////
/* If we replace a sampleproc, then we null-out the associated shaderproc,
otherwise the shader won't even look at the matrix/sampler
*/
void SkBitmapProcState::platformProcs() {
bool doFilter = fDoFilter;
bool isOpaque = 256 == fAlphaScale;
bool justDx = false;
if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) {
justDx = true;
}
switch (fBitmap->config()) {
case SkBitmap::kIndex8_Config:
#if __ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN)
if (justDx && !doFilter) {
#if 0 /* crashing on android device */
fSampleProc16 = SI8_D16_nofilter_DX_arm;
fShaderProc16 = NULL;
#endif
if (isOpaque) {
// this one is only very slighty faster than the C version
fSampleProc32 = SI8_opaque_D32_nofilter_DX_arm;
fShaderProc32 = NULL;
}
}
#endif
break;
default:
break;
}
}
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