| // Copyright 2016 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_ |
| #define CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_ |
| |
| #include <memory> |
| |
| #include "core/fxcodec/codec/codec_module_iface.h" |
| #include "core/fxcrt/fx_system.h" |
| |
| class CFX_DIBAttribute; |
| |
| class CCodec_PngModule final : public CodecModuleIface { |
| public: |
| class Delegate { |
| public: |
| virtual bool PngReadHeader(int width, |
| int height, |
| int bpc, |
| int pass, |
| int* color_type, |
| double* gamma) = 0; |
| |
| // Returns true on success. |pSrcBuf| will be set if this succeeds. |
| // |pSrcBuf| does not take ownership of the buffer. |
| virtual bool PngAskScanlineBuf(int line, uint8_t** pSrcBuf) = 0; |
| |
| virtual void PngFillScanlineBufCompleted(int pass, int line) = 0; |
| }; |
| |
| // CodecModuleIface: |
| FX_FILESIZE GetAvailInput(Context* pContext) const override; |
| bool Input(Context* pContext, |
| pdfium::span<uint8_t> src_buf, |
| CFX_DIBAttribute* pAttribute) override; |
| |
| std::unique_ptr<Context> Start(Delegate* pDelegate); |
| }; |
| |
| #endif // CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_ |