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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "blimp/client/feature/compositor/decoding_image_generator.h" | |
| 6 | |
| 7 #include "base/numerics/safe_conversions.h" | |
| 8 #include "blimp/client/feature/compositor/blimp_image_decoder.h" | |
| 9 #include "blimp/client/feature/compositor/blob_image_serialization_processor.h" | |
| 10 #include "blimp/common/proto/blob_cache.pb.h" | |
| 11 #include "third_party/libwebp/webp/decode.h" | |
| 12 #include "third_party/libwebp/webp/demux.h" | |
| 13 #include "third_party/skia/include/core/SkData.h" | |
| 14 | |
| 15 namespace blimp { | |
| 16 namespace client { | |
| 17 | |
| 18 SkImageGenerator* DecodingImageGenerator::create(SkData* data) { | |
| 19 BlobCacheImageMetadata parsed_metadata; | |
| 20 int signed_size = base::checked_cast<int>(data->size()); | |
| 21 if (!parsed_metadata.ParseFromArray(data->data(), signed_size)) { | |
| 22 // Failed to parse proto, so will fail to decode later as well. Inform | |
| 23 // Skia by giving back an empty SkImageInfo. | |
| 24 return new DecodingImageGenerator(SkImageInfo::MakeN32Premul(0, 0), | |
| 25 data->data(), data->size()); | |
| 26 } | |
| 27 | |
| 28 return new DecodingImageGenerator( | |
| 29 SkImageInfo::MakeN32Premul(parsed_metadata.width(), | |
| 30 parsed_metadata.height()), | |
| 31 data->data(), data->size()); | |
| 32 } | |
| 33 | |
| 34 DecodingImageGenerator::DecodingImageGenerator(const SkImageInfo info, | |
| 35 const void* data, | |
| 36 size_t size) | |
| 37 : SkImageGenerator(info) { | |
| 38 if (!BlobImageSerializationProcessor::current()->GetAndDecodeBlob( | |
| 39 data, size, &decoded_bitmap_)) { | |
| 40 DLOG(FATAL) << "GetAndDecodeBlob() failed."; | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 DecodingImageGenerator::~DecodingImageGenerator() {} | |
| 45 | |
| 46 bool DecodingImageGenerator::onGetPixels(const SkImageInfo& info, | |
| 47 void* pixels, | |
| 48 size_t rowBytes, | |
| 49 SkPMColor table[], | |
| 50 int* tableCount) { | |
| 51 SkAutoLockPixels bitmapLock(decoded_bitmap_); | |
| 52 if (decoded_bitmap_.getPixels() != pixels) { | |
| 53 return decoded_bitmap_.copyPixelsTo(pixels, rowBytes * info.height(), | |
| 54 rowBytes); | |
| 55 } | |
| 56 return true; | |
| 57 } | |
| 58 | |
| 59 bool DecodingImageGenerator::onQueryYUV8(SkYUVSizeInfo* sizeInfo, | |
| 60 SkYUVColorSpace* colorSpace) const { | |
| 61 return false; | |
| 62 } | |
| 63 | |
| 64 bool DecodingImageGenerator::onGetYUV8Planes(const SkYUVSizeInfo& sizeInfo, | |
| 65 void* planes[3]) { | |
| 66 return false; | |
| 67 } | |
| 68 | |
| 69 } // namespace client | |
| 70 } // namespace blimp | |
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