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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkBmpCodec.h" | 8 #include "SkBmpCodec.h" |
9 #include "SkBmpMaskCodec.h" | 9 #include "SkBmpMaskCodec.h" |
10 #include "SkBmpRLECodec.h" | 10 #include "SkBmpRLECodec.h" |
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569 // Also set numColors to maxColors when it is too large | 569 // Also set numColors to maxColors when it is too large |
570 uint32_t maxColors = 1 << fBitsPerPixel; | 570 uint32_t maxColors = 1 << fBitsPerPixel; |
571 if (numColors == 0 || numColors >= maxColors) { | 571 if (numColors == 0 || numColors >= maxColors) { |
572 return maxColors; | 572 return maxColors; |
573 } | 573 } |
574 return numColors; | 574 return numColors; |
575 } | 575 } |
576 | 576 |
577 SkCodec::Result SkBmpCodec::onStartScanlineDecode(const SkImageInfo& dstInfo, | 577 SkCodec::Result SkBmpCodec::onStartScanlineDecode(const SkImageInfo& dstInfo, |
578 const SkCodec::Options& options, SkPMColor inputColorPtr[], int* inputCo
lorCount) { | 578 const SkCodec::Options& options, SkPMColor inputColorPtr[], int* inputCo
lorCount) { |
579 if (!this->rewindIfNeeded()) { | |
580 return kCouldNotRewind; | |
581 } | |
582 if (options.fSubset) { | 579 if (options.fSubset) { |
583 // Subsets are not supported. | 580 // Subsets are not supported. |
584 return kUnimplemented; | 581 return kUnimplemented; |
585 } | 582 } |
586 if (dstInfo.dimensions() != this->getInfo().dimensions()) { | 583 if (dstInfo.dimensions() != this->getInfo().dimensions()) { |
587 if (!SkScaledCodec::DimensionsSupportedForSampling(this->getInfo(), dstI
nfo)) { | 584 if (!SkScaledCodec::DimensionsSupportedForSampling(this->getInfo(), dstI
nfo)) { |
588 return SkCodec::kInvalidScale; | 585 return SkCodec::kInvalidScale; |
589 } | 586 } |
590 } | 587 } |
591 if (!conversion_possible(dstInfo, this->getInfo())) { | 588 if (!conversion_possible(dstInfo, this->getInfo())) { |
592 SkCodecPrintf("Error: cannot convert input type to output type.\n"); | 589 SkCodecPrintf("Error: cannot convert input type to output type.\n"); |
593 return kInvalidConversion; | 590 return kInvalidConversion; |
594 } | 591 } |
595 | 592 |
596 return prepareToDecode(dstInfo, options, inputColorPtr, inputColorCount); | 593 return prepareToDecode(dstInfo, options, inputColorPtr, inputColorCount); |
597 } | 594 } |
598 | 595 |
599 SkCodec::Result SkBmpCodec::onGetScanlines(void* dst, int count, size_t rowBytes
) { | 596 SkCodec::Result SkBmpCodec::onGetScanlines(void* dst, int count, size_t rowBytes
) { |
600 // Create a new image info representing the portion of the image to decode | 597 // Create a new image info representing the portion of the image to decode |
601 SkImageInfo rowInfo = this->dstInfo().makeWH(this->dstInfo().width(), count)
; | 598 SkImageInfo rowInfo = this->dstInfo().makeWH(this->dstInfo().width(), count)
; |
602 | 599 |
603 // Decode the requested rows | 600 // Decode the requested rows |
604 return this->decodeRows(rowInfo, dst, rowBytes, this->options()); | 601 return this->decodeRows(rowInfo, dst, rowBytes, this->options()); |
605 } | 602 } |
606 | 603 |
607 int SkBmpCodec::onNextScanline() const { | 604 int SkBmpCodec::onNextScanline() const { |
608 return this->getDstRow(this->INHERITED::onNextScanline(), this->dstInfo().he
ight()); | 605 return this->getDstRow(this->INHERITED::onNextScanline(), this->dstInfo().he
ight()); |
609 } | 606 } |
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