diff options
Diffstat (limited to 'src/codec/SkCodec.cpp')
-rw-r--r-- | src/codec/SkCodec.cpp | 125 |
1 files changed, 33 insertions, 92 deletions
diff --git a/src/codec/SkCodec.cpp b/src/codec/SkCodec.cpp index 3c485c8beb..3da7f5fb07 100644 --- a/src/codec/SkCodec.cpp +++ b/src/codec/SkCodec.cpp @@ -154,20 +154,6 @@ bool SkCodec::rewindIfNeeded() { return this->onRewind(); } -#define CHECK_COLOR_TABLE \ - if (kIndex_8_SkColorType == info.colorType()) { \ - if (nullptr == ctable || nullptr == ctableCount) { \ - return SkCodec::kInvalidParameters; \ - } \ - } else { \ - if (ctableCount) { \ - *ctableCount = 0; \ - } \ - ctableCount = nullptr; \ - ctable = nullptr; \ - } - - SkCodec::Result SkCodec::getPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, const Options* options, SkPMColor ctable[], int* ctableCount) { if (kUnknown_SkColorType == info.colorType()) { @@ -180,7 +166,17 @@ SkCodec::Result SkCodec::getPixels(const SkImageInfo& info, void* pixels, size_t return kInvalidParameters; } - CHECK_COLOR_TABLE; + if (kIndex_8_SkColorType == info.colorType()) { + if (nullptr == ctable || nullptr == ctableCount) { + return kInvalidParameters; + } + } else { + if (ctableCount) { + *ctableCount = 0; + } + ctableCount = nullptr; + ctable = nullptr; + } if (!this->rewindIfNeeded()) { return kCouldNotRewind; @@ -232,77 +228,22 @@ SkCodec::Result SkCodec::getPixels(const SkImageInfo& info, void* pixels, size_t return this->getPixels(info, pixels, rowBytes, nullptr, nullptr, nullptr); } -SkCodec::Result SkCodec::startIncrementalDecode(const SkImageInfo& info, void* pixels, - size_t rowBytes, const SkCodec::Options* options, SkPMColor* ctable, int* ctableCount) { - fStartedIncrementalDecode = false; - - if (kUnknown_SkColorType == info.colorType()) { - return kInvalidConversion; - } - if (nullptr == pixels) { - return kInvalidParameters; - } - - // Ensure that valid color ptrs are passed in for kIndex8 color type - CHECK_COLOR_TABLE; - - // FIXME: If the rows come after the rows of a previous incremental decode, - // we might be able to skip the rewind, but only the implementation knows - // that. (e.g. PNG will always need to rewind, since we called longjmp, but - // a bottom-up BMP could skip rewinding if the new rows are above the old - // rows.) - if (!this->rewindIfNeeded()) { - return kCouldNotRewind; - } - - // Set options. - Options optsStorage; - if (nullptr == options) { - options = &optsStorage; - } else if (options->fSubset) { - SkIRect size = SkIRect::MakeSize(info.dimensions()); - if (!size.contains(*options->fSubset)) { - return kInvalidParameters; - } - - const int top = options->fSubset->top(); - const int bottom = options->fSubset->bottom(); - if (top < 0 || top >= info.height() || top >= bottom || bottom > info.height()) { - return kInvalidParameters; - } - } - - if (!this->dimensionsSupported(info.dimensions())) { - return kInvalidScale; - } - - fDstInfo = info; - fOptions = *options; - - const Result result = this->onStartIncrementalDecode(info, pixels, rowBytes, - fOptions, ctable, ctableCount); - if (kSuccess == result) { - fStartedIncrementalDecode = true; - } else if (kUnimplemented == result) { - // FIXME: This is temporarily necessary, until we transition SkCodec - // implementations from scanline decoding to incremental decoding. - // SkAndroidCodec will first attempt to use incremental decoding, but - // will fall back to scanline decoding if incremental returns - // kUnimplemented. rewindIfNeeded(), above, set fNeedsRewind to true - // (after potentially rewinding), but we do not want the next call to - // startScanlineDecode() to do a rewind. - fNeedsRewind = false; - } - return result; -} - - -SkCodec::Result SkCodec::startScanlineDecode(const SkImageInfo& info, +SkCodec::Result SkCodec::startScanlineDecode(const SkImageInfo& dstInfo, const SkCodec::Options* options, SkPMColor ctable[], int* ctableCount) { // Reset fCurrScanline in case of failure. fCurrScanline = -1; // Ensure that valid color ptrs are passed in for kIndex8 color type - CHECK_COLOR_TABLE; + if (kIndex_8_SkColorType == dstInfo.colorType()) { + if (nullptr == ctable || nullptr == ctableCount) { + return SkCodec::kInvalidParameters; + } + } else { + if (ctableCount) { + *ctableCount = 0; + } + ctableCount = nullptr; + ctable = nullptr; + } if (!this->rewindIfNeeded()) { return kCouldNotRewind; @@ -313,38 +254,36 @@ SkCodec::Result SkCodec::startScanlineDecode(const SkImageInfo& info, if (nullptr == options) { options = &optsStorage; } else if (options->fSubset) { - SkIRect size = SkIRect::MakeSize(info.dimensions()); + SkIRect size = SkIRect::MakeSize(dstInfo.dimensions()); if (!size.contains(*options->fSubset)) { return kInvalidInput; } // We only support subsetting in the x-dimension for scanline decoder. // Subsetting in the y-dimension can be accomplished using skipScanlines(). - if (options->fSubset->top() != 0 || options->fSubset->height() != info.height()) { + if (options->fSubset->top() != 0 || options->fSubset->height() != dstInfo.height()) { return kInvalidInput; } } // FIXME: Support subsets somehow? - if (!this->dimensionsSupported(info.dimensions())) { + if (!this->dimensionsSupported(dstInfo.dimensions())) { return kInvalidScale; } - const Result result = this->onStartScanlineDecode(info, *options, ctable, ctableCount); + const Result result = this->onStartScanlineDecode(dstInfo, *options, ctable, ctableCount); if (result != SkCodec::kSuccess) { return result; } fCurrScanline = 0; - fDstInfo = info; + fDstInfo = dstInfo; fOptions = *options; return kSuccess; } -#undef CHECK_COLOR_TABLE - -SkCodec::Result SkCodec::startScanlineDecode(const SkImageInfo& info) { - return this->startScanlineDecode(info, nullptr, nullptr, nullptr); +SkCodec::Result SkCodec::startScanlineDecode(const SkImageInfo& dstInfo) { + return this->startScanlineDecode(dstInfo, nullptr, nullptr, nullptr); } int SkCodec::getScanlines(void* dst, int countLines, size_t rowBytes) { @@ -392,6 +331,7 @@ int SkCodec::outputScanline(int inputScanline) const { int SkCodec::onOutputScanline(int inputScanline) const { switch (this->getScanlineOrder()) { case kTopDown_SkScanlineOrder: + case kNone_SkScanlineOrder: return inputScanline; case kBottomUp_SkScanlineOrder: return this->getInfo().height() - inputScanline - 1; @@ -425,7 +365,8 @@ void SkCodec::fillIncompleteImage(const SkImageInfo& info, void* dst, size_t row } switch (this->getScanlineOrder()) { - case kTopDown_SkScanlineOrder: { + case kTopDown_SkScanlineOrder: + case kNone_SkScanlineOrder: { const SkImageInfo fillInfo = info.makeWH(fillWidth, linesRemaining); fillDst = SkTAddOffset<void>(dst, linesDecoded * rowBytes); fill_proc(fillInfo, fillDst, rowBytes, fillValue, zeroInit, sampler); |