1 2 /* 3 * Copyright 2009 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #include "SkBitmapProcState.h" 11 #include "SkColorPriv.h" 12 #include "SkUtils.h" 13 14 #if __ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN) 15 void SI8_D16_nofilter_DX_arm( 16 const SkBitmapProcState& s, 17 const uint32_t* SK_RESTRICT xy, 18 int count, 19 uint16_t* SK_RESTRICT colors) __attribute__((optimize("O1"))); 20 21 void SI8_D16_nofilter_DX_arm(const SkBitmapProcState& s, 22 const uint32_t* SK_RESTRICT xy, 23 int count, uint16_t* SK_RESTRICT colors) { 24 SkASSERT(count > 0 && colors != NULL); 25 SkASSERT(s.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)); 26 SkASSERT(s.fDoFilter == false); 27 28 const uint16_t* SK_RESTRICT table = s.fBitmap->getColorTable()->lock16BitCache(); 29 const uint8_t* SK_RESTRICT srcAddr = (const uint8_t*)s.fBitmap->getPixels(); 30 31 // buffer is y32, x16, x16, x16, x16, x16 32 // bump srcAddr to the proper row, since we're told Y never changes 33 SkASSERT((unsigned)xy[0] < (unsigned)s.fBitmap->height()); 34 srcAddr = (const uint8_t*)((const char*)srcAddr + 35 xy[0] * s.fBitmap->rowBytes()); 36 37 uint8_t src; 38 39 if (1 == s.fBitmap->width()) { 40 src = srcAddr[0]; 41 uint16_t dstValue = table[src]; 42 sk_memset16(colors, dstValue, count); 43 } else { 44 int i; 45 int count8 = count >> 3; 46 const uint16_t* SK_RESTRICT xx = (const uint16_t*)(xy + 1); 47 48 asm volatile ( 49 "cmp %[count8], #0 \n\t" // compare loop counter with 0 50 "beq 2f \n\t" // if loop counter == 0, exit 51 "1: \n\t" 52 "ldmia %[xx]!, {r5, r7, r9, r11} \n\t" // load ptrs to pixels 0-7 53 "subs %[count8], %[count8], #1 \n\t" // decrement loop counter 54 "uxth r4, r5 \n\t" // extract ptr 0 55 "mov r5, r5, lsr #16 \n\t" // extract ptr 1 56 "uxth r6, r7 \n\t" // extract ptr 2 57 "mov r7, r7, lsr #16 \n\t" // extract ptr 3 58 "ldrb r4, [%[srcAddr], r4] \n\t" // load pixel 0 from image 59 "uxth r8, r9 \n\t" // extract ptr 4 60 "ldrb r5, [%[srcAddr], r5] \n\t" // load pixel 1 from image 61 "mov r9, r9, lsr #16 \n\t" // extract ptr 5 62 "ldrb r6, [%[srcAddr], r6] \n\t" // load pixel 2 from image 63 "uxth r10, r11 \n\t" // extract ptr 6 64 "ldrb r7, [%[srcAddr], r7] \n\t" // load pixel 3 from image 65 "mov r11, r11, lsr #16 \n\t" // extract ptr 7 66 "ldrb r8, [%[srcAddr], r8] \n\t" // load pixel 4 from image 67 "add r4, r4, r4 \n\t" // double pixel 0 for RGB565 lookup 68 "ldrb r9, [%[srcAddr], r9] \n\t" // load pixel 5 from image 69 "add r5, r5, r5 \n\t" // double pixel 1 for RGB565 lookup 70 "ldrb r10, [%[srcAddr], r10] \n\t" // load pixel 6 from image 71 "add r6, r6, r6 \n\t" // double pixel 2 for RGB565 lookup 72 "ldrb r11, [%[srcAddr], r11] \n\t" // load pixel 7 from image 73 "add r7, r7, r7 \n\t" // double pixel 3 for RGB565 lookup 74 "ldrh r4, [%[table], r4] \n\t" // load pixel 0 RGB565 from colmap 75 "add r8, r8, r8 \n\t" // double pixel 4 for RGB565 lookup 76 "ldrh r5, [%[table], r5] \n\t" // load pixel 1 RGB565 from colmap 77 "add r9, r9, r9 \n\t" // double pixel 5 for RGB565 lookup 78 "ldrh r6, [%[table], r6] \n\t" // load pixel 2 RGB565 from colmap 79 "add r10, r10, r10 \n\t" // double pixel 6 for RGB565 lookup 80 "ldrh r7, [%[table], r7] \n\t" // load pixel 3 RGB565 from colmap 81 "add r11, r11, r11 \n\t" // double pixel 7 for RGB565 lookup 82 "ldrh r8, [%[table], r8] \n\t" // load pixel 4 RGB565 from colmap 83 "ldrh r9, [%[table], r9] \n\t" // load pixel 5 RGB565 from colmap 84 "ldrh r10, [%[table], r10] \n\t" // load pixel 6 RGB565 from colmap 85 "ldrh r11, [%[table], r11] \n\t" // load pixel 7 RGB565 from colmap 86 "pkhbt r5, r4, r5, lsl #16 \n\t" // pack pixels 0 and 1 87 "pkhbt r6, r6, r7, lsl #16 \n\t" // pack pixels 2 and 3 88 "pkhbt r8, r8, r9, lsl #16 \n\t" // pack pixels 4 and 5 89 "pkhbt r10, r10, r11, lsl #16 \n\t" // pack pixels 6 and 7 90 "stmia %[colors]!, {r5, r6, r8, r10} \n\t" // store last 8 pixels 91 "bgt 1b \n\t" // loop if counter > 0 92 "2: \n\t" 93 : [xx] "+r" (xx), [count8] "+r" (count8), [colors] "+r" (colors) 94 : [table] "r" (table), [srcAddr] "r" (srcAddr) 95 : "memory", "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11" 96 ); 97 98 for (i = (count & 7); i > 0; --i) { 99 src = srcAddr[*xx++]; *colors++ = table[src]; 100 } 101 } 102 103 s.fBitmap->getColorTable()->unlock16BitCache(); 104 } 105 106 void SI8_opaque_D32_nofilter_DX_arm( 107 const SkBitmapProcState& s, 108 const uint32_t* SK_RESTRICT xy, 109 int count, 110 SkPMColor* SK_RESTRICT colors) __attribute__((optimize("O1"))); 111 112 void SI8_opaque_D32_nofilter_DX_arm(const SkBitmapProcState& s, 113 const uint32_t* SK_RESTRICT xy, 114 int count, SkPMColor* SK_RESTRICT colors) { 115 SkASSERT(count > 0 && colors != NULL); 116 SkASSERT(s.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)); 117 SkASSERT(s.fDoFilter == false); 118 119 const SkPMColor* SK_RESTRICT table = s.fBitmap->getColorTable()->lockColors(); 120 const uint8_t* SK_RESTRICT srcAddr = (const uint8_t*)s.fBitmap->getPixels(); 121 122 // buffer is y32, x16, x16, x16, x16, x16 123 // bump srcAddr to the proper row, since we're told Y never changes 124 SkASSERT((unsigned)xy[0] < (unsigned)s.fBitmap->height()); 125 srcAddr = (const uint8_t*)((const char*)srcAddr + xy[0] * s.fBitmap->rowBytes()); 126 127 if (1 == s.fBitmap->width()) { 128 uint8_t src = srcAddr[0]; 129 SkPMColor dstValue = table[src]; 130 sk_memset32(colors, dstValue, count); 131 } else { 132 const uint16_t* xx = (const uint16_t*)(xy + 1); 133 134 asm volatile ( 135 "subs %[count], %[count], #8 \n\t" // decrement count by 8, set flags 136 "blt 2f \n\t" // if count < 0, branch to singles 137 "1: \n\t" // eights loop 138 "ldmia %[xx]!, {r5, r7, r9, r11} \n\t" // load ptrs to pixels 0-7 139 "uxth r4, r5 \n\t" // extract ptr 0 140 "mov r5, r5, lsr #16 \n\t" // extract ptr 1 141 "uxth r6, r7 \n\t" // extract ptr 2 142 "mov r7, r7, lsr #16 \n\t" // extract ptr 3 143 "ldrb r4, [%[srcAddr], r4] \n\t" // load pixel 0 from image 144 "uxth r8, r9 \n\t" // extract ptr 4 145 "ldrb r5, [%[srcAddr], r5] \n\t" // load pixel 1 from image 146 "mov r9, r9, lsr #16 \n\t" // extract ptr 5 147 "ldrb r6, [%[srcAddr], r6] \n\t" // load pixel 2 from image 148 "uxth r10, r11 \n\t" // extract ptr 6 149 "ldrb r7, [%[srcAddr], r7] \n\t" // load pixel 3 from image 150 "mov r11, r11, lsr #16 \n\t" // extract ptr 7 151 "ldrb r8, [%[srcAddr], r8] \n\t" // load pixel 4 from image 152 "ldrb r9, [%[srcAddr], r9] \n\t" // load pixel 5 from image 153 "ldrb r10, [%[srcAddr], r10] \n\t" // load pixel 6 from image 154 "ldrb r11, [%[srcAddr], r11] \n\t" // load pixel 7 from image 155 "ldr r4, [%[table], r4, lsl #2] \n\t" // load pixel 0 SkPMColor from colmap 156 "ldr r5, [%[table], r5, lsl #2] \n\t" // load pixel 1 SkPMColor from colmap 157 "ldr r6, [%[table], r6, lsl #2] \n\t" // load pixel 2 SkPMColor from colmap 158 "ldr r7, [%[table], r7, lsl #2] \n\t" // load pixel 3 SkPMColor from colmap 159 "ldr r8, [%[table], r8, lsl #2] \n\t" // load pixel 4 SkPMColor from colmap 160 "ldr r9, [%[table], r9, lsl #2] \n\t" // load pixel 5 SkPMColor from colmap 161 "ldr r10, [%[table], r10, lsl #2] \n\t" // load pixel 6 SkPMColor from colmap 162 "ldr r11, [%[table], r11, lsl #2] \n\t" // load pixel 7 SkPMColor from colmap 163 "subs %[count], %[count], #8 \n\t" // decrement loop counter 164 "stmia %[colors]!, {r4-r11} \n\t" // store 8 pixels 165 "bge 1b \n\t" // loop if counter >= 0 166 "2: \n\t" 167 "adds %[count], %[count], #8 \n\t" // fix up counter, set flags 168 "beq 4f \n\t" // if count == 0, branch to exit 169 "3: \n\t" // singles loop 170 "ldrh r4, [%[xx]], #2 \n\t" // load pixel ptr 171 "subs %[count], %[count], #1 \n\t" // decrement loop counter 172 "ldrb r5, [%[srcAddr], r4] \n\t" // load pixel from image 173 "ldr r6, [%[table], r5, lsl #2] \n\t" // load SkPMColor from colmap 174 "str r6, [%[colors]], #4 \n\t" // store pixel, update ptr 175 "bne 3b \n\t" // loop if counter != 0 176 "4: \n\t" // exit 177 : [xx] "+r" (xx), [count] "+r" (count), [colors] "+r" (colors) 178 : [table] "r" (table), [srcAddr] "r" (srcAddr) 179 : "memory", "cc", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11" 180 ); 181 } 182 183 s.fBitmap->getColorTable()->unlockColors(false); 184 } 185 #endif //__ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN) 186 187 /////////////////////////////////////////////////////////////////////////////// 188 189 /* If we replace a sampleproc, then we null-out the associated shaderproc, 190 otherwise the shader won't even look at the matrix/sampler 191 */ 192 void SkBitmapProcState::platformProcs() { 193 bool doFilter = fDoFilter; 194 bool isOpaque = 256 == fAlphaScale; 195 bool justDx = false; 196 197 if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { 198 justDx = true; 199 } 200 201 switch (fBitmap->config()) { 202 case SkBitmap::kIndex8_Config: 203 #if __ARM_ARCH__ >= 6 && !defined(SK_CPU_BENDIAN) 204 if (justDx && !doFilter) { 205 #if 0 /* crashing on android device */ 206 fSampleProc16 = SI8_D16_nofilter_DX_arm; 207 fShaderProc16 = NULL; 208 #endif 209 if (isOpaque) { 210 // this one is only very slighty faster than the C version 211 fSampleProc32 = SI8_opaque_D32_nofilter_DX_arm; 212 fShaderProc32 = NULL; 213 } 214 } 215 #endif 216 break; 217 default: 218 break; 219 } 220 } 221 222
