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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_LOADER_IMAGE_WEBP_IMAGE_DECODER_H_
#define COBALT_LOADER_IMAGE_WEBP_IMAGE_DECODER_H_
#include <string>
#include <vector>
#include "cobalt/loader/image/animated_webp_image.h"
#include "cobalt/loader/image/image_data_decoder.h"
#include "third_party/libwebp/src/webp/decode.h"
namespace cobalt {
namespace loader {
namespace image {
class WEBPImageDecoder : public ImageDataDecoder {
public:
explicit WEBPImageDecoder(render_tree::ResourceProvider* resource_provider);
~WEBPImageDecoder() override;
// From ImageDataDecoder
std::string GetTypeString() const override { return "WEBPImageDecoder"; }
// Returns a pointer to the original decoded image memory.
uint8_t* GetOriginalMemory();
private:
// From ImageDataDecoder
size_t DecodeChunkInternal(const uint8* data, size_t input_byte) override;
void FinishInternal() override;
bool has_animation() const override { return has_animation_; }
scoped_refptr<AnimatedImage> animated_image() override {
return animated_webp_image_;
}
bool ReadHeader(const uint8* data, size_t size);
bool CreateInternalDecoder(bool has_alpha);
void DeleteInternalDecoder();
WebPIDecoder* internal_decoder_;
WebPDecoderConfig config_;
bool has_animation_;
scoped_refptr<AnimatedWebPImage> animated_webp_image_;
};
} // namespace image
} // namespace loader
} // namespace cobalt
#endif // COBALT_LOADER_IMAGE_WEBP_IMAGE_DECODER_H_