1 /*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkPixmap.h"
9
10 #include "include/core/SkBitmap.h"
11 #include "include/core/SkData.h"
12 #include "include/core/SkSurface.h"
13 #include "include/core/SkUnPreMultiply.h"
14 #include "include/private/SkColorData.h"
15 #include "include/private/SkHalf.h"
16 #include "include/private/SkImageInfoPriv.h"
17 #include "include/private/SkNx.h"
18 #include "include/private/SkTemplates.h"
19 #include "include/private/SkTo.h"
20 #include "src/core/SkConvertPixels.h"
21 #include "src/core/SkDraw.h"
22 #include "src/core/SkMask.h"
23 #include "src/core/SkPixmapPriv.h"
24 #include "src/core/SkRasterClip.h"
25 #include "src/core/SkUtils.h"
26 #include "src/image/SkReadPixelsRec.h"
27 #include "src/shaders/SkImageShader.h"
28
29 #include <utility>
30
31 /////////////////////////////////////////////////////////////////////////////////////////////////
32
reset()33 void SkPixmap::reset() {
34 fPixels = nullptr;
35 fRowBytes = 0;
36 fInfo = SkImageInfo::MakeUnknown();
37 }
38
reset(const SkImageInfo & info,const void * addr,size_t rowBytes)39 void SkPixmap::reset(const SkImageInfo& info, const void* addr, size_t rowBytes) {
40 if (addr) {
41 SkASSERT(info.validRowBytes(rowBytes));
42 }
43 fPixels = addr;
44 fRowBytes = rowBytes;
45 fInfo = info;
46 }
47
reset(const SkMask & src)48 bool SkPixmap::reset(const SkMask& src) {
49 if (SkMask::kA8_Format == src.fFormat) {
50 this->reset(SkImageInfo::MakeA8(src.fBounds.width(), src.fBounds.height()),
51 src.fImage, src.fRowBytes);
52 return true;
53 }
54 this->reset();
55 return false;
56 }
57
setColorSpace(sk_sp<SkColorSpace> cs)58 void SkPixmap::setColorSpace(sk_sp<SkColorSpace> cs) {
59 fInfo = fInfo.makeColorSpace(std::move(cs));
60 }
61
extractSubset(SkPixmap * result,const SkIRect & subset) const62 bool SkPixmap::extractSubset(SkPixmap* result, const SkIRect& subset) const {
63 SkIRect srcRect, r;
64 srcRect.setWH(this->width(), this->height());
65 if (!r.intersect(srcRect, subset)) {
66 return false; // r is empty (i.e. no intersection)
67 }
68
69 // If the upper left of the rectangle was outside the bounds of this SkBitmap, we should have
70 // exited above.
71 SkASSERT(static_cast<unsigned>(r.fLeft) < static_cast<unsigned>(this->width()));
72 SkASSERT(static_cast<unsigned>(r.fTop) < static_cast<unsigned>(this->height()));
73
74 const void* pixels = nullptr;
75 if (fPixels) {
76 const size_t bpp = fInfo.bytesPerPixel();
77 pixels = (const uint8_t*)fPixels + r.fTop * fRowBytes + r.fLeft * bpp;
78 }
79 result->reset(fInfo.makeDimensions(r.size()), pixels, fRowBytes);
80 return true;
81 }
82
83 // This is the same as SkPixmap::addr(x,y), but this version gets inlined, while the public
84 // method does not. Perhaps we could bloat it so it can be inlined, but that would grow code-size
85 // everywhere, instead of just here (on behalf of getAlphaf()).
fast_getaddr(const SkPixmap & pm,int x,int y)86 static const void* fast_getaddr(const SkPixmap& pm, int x, int y) {
87 x <<= SkColorTypeShiftPerPixel(pm.colorType());
88 return static_cast<const char*>(pm.addr()) + y * pm.rowBytes() + x;
89 }
90
getAlphaf(int x,int y) const91 float SkPixmap::getAlphaf(int x, int y) const {
92 SkASSERT(this->addr());
93 SkASSERT((unsigned)x < (unsigned)this->width());
94 SkASSERT((unsigned)y < (unsigned)this->height());
95
96 float value = 0;
97 const void* srcPtr = fast_getaddr(*this, x, y);
98
99 switch (this->colorType()) {
100 case kUnknown_SkColorType:
101 return 0;
102 case kGray_8_SkColorType:
103 case kR8G8_unorm_SkColorType:
104 case kR16G16_unorm_SkColorType:
105 case kR16G16_float_SkColorType:
106 case kRGB_565_SkColorType:
107 case kRGB_888x_SkColorType:
108 case kRGB_101010x_SkColorType:
109 case kBGR_101010x_SkColorType:
110 return 1;
111 case kAlpha_8_SkColorType:
112 value = static_cast<const uint8_t*>(srcPtr)[0] * (1.0f/255);
113 break;
114 case kA16_unorm_SkColorType:
115 value = static_cast<const uint16_t*>(srcPtr)[0] * (1.0f/65535);
116 break;
117 case kA16_float_SkColorType: {
118 SkHalf half = static_cast<const SkHalf*>(srcPtr)[0];
119 value = SkHalfToFloat(half);
120 break;
121 }
122 case kARGB_4444_SkColorType: {
123 uint16_t u16 = static_cast<const uint16_t*>(srcPtr)[0];
124 value = SkGetPackedA4444(u16) * (1.0f/15);
125 break;
126 }
127 case kRGBA_8888_SkColorType:
128 case kBGRA_8888_SkColorType:
129 value = static_cast<const uint8_t*>(srcPtr)[3] * (1.0f/255);
130 break;
131 case kRGBA_1010102_SkColorType:
132 case kBGRA_1010102_SkColorType: {
133 uint32_t u32 = static_cast<const uint32_t*>(srcPtr)[0];
134 value = (u32 >> 30) * (1.0f/3);
135 break;
136 }
137 case kR16G16B16A16_unorm_SkColorType: {
138 uint64_t u64 = static_cast<const uint64_t*>(srcPtr)[0];
139 value = (u64 >> 48) * (1.0f/65535);
140 break;
141 }
142 case kRGBA_F16Norm_SkColorType:
143 case kRGBA_F16_SkColorType: {
144 uint64_t px;
145 memcpy(&px, srcPtr, sizeof(px));
146 value = SkHalfToFloat_finite_ftz(px)[3];
147 break;
148 }
149 case kRGBA_F32_SkColorType:
150 value = static_cast<const float*>(srcPtr)[3];
151 break;
152 }
153 return value;
154 }
155
readPixels(const SkImageInfo & dstInfo,void * dstPixels,size_t dstRB,int x,int y) const156 bool SkPixmap::readPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRB,
157 int x, int y) const {
158 if (!SkImageInfoValidConversion(dstInfo, fInfo)) {
159 return false;
160 }
161
162 SkReadPixelsRec rec(dstInfo, dstPixels, dstRB, x, y);
163 if (!rec.trim(fInfo.width(), fInfo.height())) {
164 return false;
165 }
166
167 const void* srcPixels = this->addr(rec.fX, rec.fY);
168 const SkImageInfo srcInfo = fInfo.makeDimensions(rec.fInfo.dimensions());
169 SkConvertPixels(rec.fInfo, rec.fPixels, rec.fRowBytes, srcInfo, srcPixels, this->rowBytes());
170 return true;
171 }
172
erase(SkColor color,const SkIRect & subset) const173 bool SkPixmap::erase(SkColor color, const SkIRect& subset) const {
174 return this->erase(SkColor4f::FromColor(color), &subset);
175 }
176
erase(const SkColor4f & color,const SkIRect * subset) const177 bool SkPixmap::erase(const SkColor4f& color, const SkIRect* subset) const {
178 SkPaint paint;
179 paint.setBlendMode(SkBlendMode::kSrc);
180 paint.setColor4f(color, this->colorSpace());
181
182 SkIRect clip = this->bounds();
183 if (subset && !clip.intersect(*subset)) {
184 return false;
185 }
186 SkRasterClip rc{clip};
187
188 SkDraw draw;
189 draw.fDst = *this;
190 draw.fMatrix = &SkMatrix::I();
191 draw.fRC = &rc;
192
193 draw.drawPaint(paint);
194 return true;
195 }
196
scalePixels(const SkPixmap & actualDst,SkFilterQuality quality) const197 bool SkPixmap::scalePixels(const SkPixmap& actualDst, SkFilterQuality quality) const {
198 // We may need to tweak how we interpret these just a little below, so we make copies.
199 SkPixmap src = *this,
200 dst = actualDst;
201
202 // Can't do anthing with empty src or dst
203 if (src.width() <= 0 || src.height() <= 0 ||
204 dst.width() <= 0 || dst.height() <= 0) {
205 return false;
206 }
207
208 // no scaling involved?
209 if (src.width() == dst.width() && src.height() == dst.height()) {
210 return src.readPixels(dst);
211 }
212
213 // If src and dst are both unpremul, we'll fake the source out to appear as if premul,
214 // and mark the destination as opaque. This odd combination allows us to scale unpremul
215 // pixels without ever premultiplying them (perhaps losing information in the color channels).
216 // This is an idiosyncratic feature of scalePixels(), and is tested by scalepixels_unpremul GM.
217 bool clampAsIfUnpremul = false;
218 if (src.alphaType() == kUnpremul_SkAlphaType &&
219 dst.alphaType() == kUnpremul_SkAlphaType) {
220 src.reset(src.info().makeAlphaType(kPremul_SkAlphaType), src.addr(), src.rowBytes());
221 dst.reset(dst.info().makeAlphaType(kOpaque_SkAlphaType), dst.addr(), dst.rowBytes());
222
223 // We'll need to tell the image shader to clamp to [0,1] instead of the
224 // usual [0,a] when using a bicubic scaling (kHigh_SkFilterQuality).
225 clampAsIfUnpremul = true;
226 }
227
228 SkBitmap bitmap;
229 if (!bitmap.installPixels(src)) {
230 return false;
231 }
232 bitmap.setImmutable(); // Don't copy when we create an image.
233 bitmap.setIsVolatile(true); // Disable any caching.
234
235 SkMatrix scale = SkMatrix::MakeRectToRect(SkRect::Make(src.bounds()),
236 SkRect::Make(dst.bounds()),
237 SkMatrix::kFill_ScaleToFit);
238
239 // We'll create a shader to do this draw so we have control over the bicubic clamp.
240 sk_sp<SkShader> shader = SkImageShader::Make(SkImage::MakeFromBitmap(bitmap),
241 SkTileMode::kClamp,
242 SkTileMode::kClamp,
243 &scale,
244 clampAsIfUnpremul);
245
246 sk_sp<SkSurface> surface = SkSurface::MakeRasterDirect(dst.info(),
247 dst.writable_addr(),
248 dst.rowBytes());
249 if (!shader || !surface) {
250 return false;
251 }
252
253 SkPaint paint;
254 paint.setBlendMode(SkBlendMode::kSrc);
255 paint.setFilterQuality(quality);
256 paint.setShader(std::move(shader));
257 surface->getCanvas()->drawPaint(paint);
258 return true;
259 }
260
261 //////////////////////////////////////////////////////////////////////////////////////////////////
262
getColor(int x,int y) const263 SkColor SkPixmap::getColor(int x, int y) const {
264 SkASSERT(this->addr());
265 SkASSERT((unsigned)x < (unsigned)this->width());
266 SkASSERT((unsigned)y < (unsigned)this->height());
267
268 const bool needsUnpremul = (kPremul_SkAlphaType == fInfo.alphaType());
269 auto toColor = [needsUnpremul](uint32_t maybePremulColor) {
270 return needsUnpremul ? SkUnPreMultiply::PMColorToColor(maybePremulColor)
271 : SkColorSetARGB(SkGetPackedA32(maybePremulColor), SkGetPackedR32(maybePremulColor),
272 SkGetPackedG32(maybePremulColor), SkGetPackedB32(maybePremulColor));
273 };
274
275 switch (this->colorType()) {
276 case kGray_8_SkColorType: {
277 uint8_t value = *this->addr8(x, y);
278 return SkColorSetRGB(value, value, value);
279 }
280 case kAlpha_8_SkColorType: {
281 return SkColorSetA(0, *this->addr8(x, y));
282 }
283 case kA16_unorm_SkColorType: {
284 uint16_t value = *this->addr16(x, y);
285 return SkColorSetA(0, value * (255 / 65535.0f));
286 }
287 case kA16_float_SkColorType: {
288 SkHalf value = *this->addr16(x, y);
289 return SkColorSetA(0, 255 * SkHalfToFloat(value));
290 }
291 case kRGB_565_SkColorType: {
292 return SkPixel16ToColor(*this->addr16(x, y));
293 }
294 case kARGB_4444_SkColorType: {
295 uint16_t value = *this->addr16(x, y);
296 SkPMColor c = SkPixel4444ToPixel32(value);
297 return toColor(c);
298 }
299 case kR8G8_unorm_SkColorType: {
300 uint16_t value = *this->addr16(x, y);
301 return (uint32_t)( ((value >> 0) & 0xff) ) << 16
302 | (uint32_t)( ((value >> 8) & 0xff) ) << 8
303 | 0xff000000;
304 }
305 case kR16G16_unorm_SkColorType: {
306 uint32_t value = *this->addr32(x, y);
307 return (uint32_t)( ((value >> 0) & 0xffff) * (255/65535.0f) ) << 16
308 | (uint32_t)( ((value >> 16) & 0xffff) * (255/65535.0f) ) << 8
309 | 0xff000000;
310 }
311 case kR16G16_float_SkColorType: {
312 uint32_t value = *this->addr32(x, y);
313 uint32_t r = 255 * SkHalfToFloat((value >> 0) & 0xffff);
314 uint32_t g = 255 * SkHalfToFloat((value >> 16) & 0xffff);
315 return (r << 16) | (g << 8) | 0xff000000;
316 }
317 case kRGB_888x_SkColorType: {
318 uint32_t value = *this->addr32(x, y);
319 return SkSwizzle_RB(value | 0xff000000);
320 }
321 case kBGRA_8888_SkColorType: {
322 uint32_t value = *this->addr32(x, y);
323 SkPMColor c = SkSwizzle_BGRA_to_PMColor(value);
324 return toColor(c);
325 }
326 case kRGBA_8888_SkColorType: {
327 uint32_t value = *this->addr32(x, y);
328 SkPMColor c = SkSwizzle_RGBA_to_PMColor(value);
329 return toColor(c);
330 }
331 case kRGB_101010x_SkColorType: {
332 uint32_t value = *this->addr32(x, y);
333 // Convert 10-bit rgb to 8-bit bgr, and mask in 0xff alpha at the top.
334 return (uint32_t)( ((value >> 0) & 0x3ff) * (255/1023.0f) ) << 16
335 | (uint32_t)( ((value >> 10) & 0x3ff) * (255/1023.0f) ) << 8
336 | (uint32_t)( ((value >> 20) & 0x3ff) * (255/1023.0f) ) << 0
337 | 0xff000000;
338 }
339 case kBGR_101010x_SkColorType: {
340 uint32_t value = *this->addr32(x, y);
341 // Convert 10-bit bgr to 8-bit bgr, and mask in 0xff alpha at the top.
342 return (uint32_t)( ((value >> 0) & 0x3ff) * (255/1023.0f) ) << 0
343 | (uint32_t)( ((value >> 10) & 0x3ff) * (255/1023.0f) ) << 8
344 | (uint32_t)( ((value >> 20) & 0x3ff) * (255/1023.0f) ) << 16
345 | 0xff000000;
346 }
347 case kRGBA_1010102_SkColorType:
348 case kBGRA_1010102_SkColorType: {
349 uint32_t value = *this->addr32(x, y);
350
351 float r = ((value >> 0) & 0x3ff) * (1/1023.0f),
352 g = ((value >> 10) & 0x3ff) * (1/1023.0f),
353 b = ((value >> 20) & 0x3ff) * (1/1023.0f),
354 a = ((value >> 30) & 0x3 ) * (1/ 3.0f);
355 if (this->colorType() == kBGRA_1010102_SkColorType) {
356 std::swap(r,b);
357 }
358 if (a != 0 && needsUnpremul) {
359 r = SkTPin(r/a, 0.0f, 1.0f);
360 g = SkTPin(g/a, 0.0f, 1.0f);
361 b = SkTPin(b/a, 0.0f, 1.0f);
362 }
363 return (uint32_t)( r * 255.0f ) << 16
364 | (uint32_t)( g * 255.0f ) << 8
365 | (uint32_t)( b * 255.0f ) << 0
366 | (uint32_t)( a * 255.0f ) << 24;
367 }
368 case kR16G16B16A16_unorm_SkColorType: {
369 uint64_t value = *this->addr64(x, y);
370
371 float r = ((value ) & 0xffff) * (1/65535.0f),
372 g = ((value >> 16) & 0xffff) * (1/65535.0f),
373 b = ((value >> 32) & 0xffff) * (1/65535.0f),
374 a = ((value >> 48) & 0xffff) * (1/65535.0f);
375 if (a != 0 && needsUnpremul) {
376 r *= (1.0f/a);
377 g *= (1.0f/a);
378 b *= (1.0f/a);
379 }
380 return (uint32_t)( r * 255.0f ) << 16
381 | (uint32_t)( g * 255.0f ) << 8
382 | (uint32_t)( b * 255.0f ) << 0
383 | (uint32_t)( a * 255.0f ) << 24;
384 }
385 case kRGBA_F16Norm_SkColorType:
386 case kRGBA_F16_SkColorType: {
387 const uint64_t* addr =
388 (const uint64_t*)fPixels + y * (fRowBytes >> 3) + x;
389 Sk4f p4 = SkHalfToFloat_finite_ftz(*addr);
390 if (p4[3] && needsUnpremul) {
391 float inva = 1 / p4[3];
392 p4 = p4 * Sk4f(inva, inva, inva, 1);
393 }
394 SkColor c;
395 SkNx_cast<uint8_t>(p4 * Sk4f(255) + Sk4f(0.5f)).store(&c);
396 // p4 is RGBA, but we want BGRA, so we need to swap next
397 return SkSwizzle_RB(c);
398 }
399 case kRGBA_F32_SkColorType: {
400 const float* rgba =
401 (const float*)fPixels + 4*y*(fRowBytes >> 4) + 4*x;
402 Sk4f p4 = Sk4f::Load(rgba);
403 // From here on, just like F16:
404 if (p4[3] && needsUnpremul) {
405 float inva = 1 / p4[3];
406 p4 = p4 * Sk4f(inva, inva, inva, 1);
407 }
408 SkColor c;
409 SkNx_cast<uint8_t>(p4 * Sk4f(255) + Sk4f(0.5f)).store(&c);
410 // p4 is RGBA, but we want BGRA, so we need to swap next
411 return SkSwizzle_RB(c);
412 }
413 case kUnknown_SkColorType:
414 break;
415 }
416 SkDEBUGFAIL("");
417 return SkColorSetARGB(0, 0, 0, 0);
418 }
419
computeIsOpaque() const420 bool SkPixmap::computeIsOpaque() const {
421 const int height = this->height();
422 const int width = this->width();
423
424 switch (this->colorType()) {
425 case kAlpha_8_SkColorType: {
426 unsigned a = 0xFF;
427 for (int y = 0; y < height; ++y) {
428 const uint8_t* row = this->addr8(0, y);
429 for (int x = 0; x < width; ++x) {
430 a &= row[x];
431 }
432 if (0xFF != a) {
433 return false;
434 }
435 }
436 return true;
437 }
438 case kA16_unorm_SkColorType: {
439 unsigned a = 0xFFFF;
440 for (int y = 0; y < height; ++y) {
441 const uint16_t* row = this->addr16(0, y);
442 for (int x = 0; x < width; ++x) {
443 a &= row[x];
444 }
445 if (0xFFFF != a) {
446 return false;
447 }
448 }
449 return true;
450 }
451 case kA16_float_SkColorType: {
452 for (int y = 0; y < height; ++y) {
453 const SkHalf* row = this->addr16(0, y);
454 for (int x = 0; x < width; ++x) {
455 if (row[x] < SK_Half1) {
456 return false;
457 }
458 }
459 }
460 return true;
461 }
462 case kRGB_565_SkColorType:
463 case kGray_8_SkColorType:
464 case kR8G8_unorm_SkColorType:
465 case kR16G16_unorm_SkColorType:
466 case kR16G16_float_SkColorType:
467 case kRGB_888x_SkColorType:
468 case kRGB_101010x_SkColorType:
469 case kBGR_101010x_SkColorType:
470 return true;
471 break;
472 case kARGB_4444_SkColorType: {
473 unsigned c = 0xFFFF;
474 for (int y = 0; y < height; ++y) {
475 const SkPMColor16* row = this->addr16(0, y);
476 for (int x = 0; x < width; ++x) {
477 c &= row[x];
478 }
479 if (0xF != SkGetPackedA4444(c)) {
480 return false;
481 }
482 }
483 return true;
484 }
485 case kBGRA_8888_SkColorType:
486 case kRGBA_8888_SkColorType: {
487 SkPMColor c = (SkPMColor)~0;
488 for (int y = 0; y < height; ++y) {
489 const SkPMColor* row = this->addr32(0, y);
490 for (int x = 0; x < width; ++x) {
491 c &= row[x];
492 }
493 if (0xFF != SkGetPackedA32(c)) {
494 return false;
495 }
496 }
497 return true;
498 }
499 case kRGBA_F16Norm_SkColorType:
500 case kRGBA_F16_SkColorType: {
501 const SkHalf* row = (const SkHalf*)this->addr();
502 for (int y = 0; y < height; ++y) {
503 for (int x = 0; x < width; ++x) {
504 if (row[4 * x + 3] < SK_Half1) {
505 return false;
506 }
507 }
508 row += this->rowBytes() >> 1;
509 }
510 return true;
511 }
512 case kRGBA_F32_SkColorType: {
513 const float* row = (const float*)this->addr();
514 for (int y = 0; y < height; ++y) {
515 for (int x = 0; x < width; ++x) {
516 if (row[4 * x + 3] < 1.0f) {
517 return false;
518 }
519 }
520 row += this->rowBytes() >> 2;
521 }
522 return true;
523 }
524 case kRGBA_1010102_SkColorType:
525 case kBGRA_1010102_SkColorType: {
526 uint32_t c = ~0;
527 for (int y = 0; y < height; ++y) {
528 const uint32_t* row = this->addr32(0, y);
529 for (int x = 0; x < width; ++x) {
530 c &= row[x];
531 }
532 if (0b11 != c >> 30) {
533 return false;
534 }
535 }
536 return true;
537 }
538 case kR16G16B16A16_unorm_SkColorType: {
539 uint16_t acc = 0xFFFF;
540 for (int y = 0; y < height; ++y) {
541 const uint64_t* row = this->addr64(0, y);
542 for (int x = 0; x < width; ++x) {
543 acc &= (row[x] >> 48);
544 }
545 if (0xFFFF != acc) {
546 return false;
547 }
548 }
549 return true;
550 }
551 case kUnknown_SkColorType:
552 SkDEBUGFAIL("");
553 break;
554 }
555 return false;
556 }
557
558 //////////////////////////////////////////////////////////////////////////////////////////////////
559
draw_orientation(const SkPixmap & dst,const SkPixmap & src,SkEncodedOrigin origin)560 static bool draw_orientation(const SkPixmap& dst, const SkPixmap& src, SkEncodedOrigin origin) {
561 auto surf = SkSurface::MakeRasterDirect(dst.info(), dst.writable_addr(), dst.rowBytes());
562 if (!surf) {
563 return false;
564 }
565
566 SkBitmap bm;
567 bm.installPixels(src);
568
569 SkMatrix m = SkEncodedOriginToMatrix(origin, src.width(), src.height());
570
571 SkPaint p;
572 p.setBlendMode(SkBlendMode::kSrc);
573 surf->getCanvas()->concat(m);
574 surf->getCanvas()->drawBitmap(bm, 0, 0, &p);
575 return true;
576 }
577
Orient(const SkPixmap & dst,const SkPixmap & src,SkEncodedOrigin origin)578 bool SkPixmapPriv::Orient(const SkPixmap& dst, const SkPixmap& src, SkEncodedOrigin origin) {
579 if (src.colorType() != dst.colorType()) {
580 return false;
581 }
582 // note: we just ignore alphaType and colorSpace for this transformation
583
584 int w = src.width();
585 int h = src.height();
586 if (ShouldSwapWidthHeight(origin)) {
587 using std::swap;
588 swap(w, h);
589 }
590 if (dst.width() != w || dst.height() != h) {
591 return false;
592 }
593 if (w == 0 || h == 0) {
594 return true;
595 }
596
597 // check for aliasing to self
598 if (src.addr() == dst.addr()) {
599 return kTopLeft_SkEncodedOrigin == origin;
600 }
601 return draw_orientation(dst, src, origin);
602 }
603
ShouldSwapWidthHeight(SkEncodedOrigin origin)604 bool SkPixmapPriv::ShouldSwapWidthHeight(SkEncodedOrigin origin) {
605 // The last four SkEncodedOrigin values involve 90 degree rotations
606 return origin >= kLeftTop_SkEncodedOrigin;
607 }
608
SwapWidthHeight(const SkImageInfo & info)609 SkImageInfo SkPixmapPriv::SwapWidthHeight(const SkImageInfo& info) {
610 return info.makeWH(info.height(), info.width());
611 }
612
613