1 // Copyright 2018 The PDFium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FXCODEC_PROGRESSIVE_DECODER_IFACE_H_ 8 #define CORE_FXCODEC_PROGRESSIVE_DECODER_IFACE_H_ 9 10 #include "core/fxcrt/fx_types.h" 11 #include "core/fxcrt/retain_ptr.h" 12 13 #ifndef PDF_ENABLE_XFA 14 #error "XFA Only" 15 #endif 16 17 class CFX_CodecMemory; 18 19 namespace fxcodec { 20 21 class ProgressiveDecoderIface { 22 public: 23 class Context { 24 public: 25 virtual ~Context() = default; 26 }; 27 28 virtual ~ProgressiveDecoderIface() = default; 29 30 // Returns the number of unprocessed bytes remaining in the input buffer. 31 virtual FX_FILESIZE GetAvailInput(Context* pContext) const = 0; 32 33 // Provides a new input buffer to the codec. Returns true on success. 34 virtual bool Input(Context* pContext, 35 RetainPtr<CFX_CodecMemory> codec_memory) = 0; 36 }; 37 38 } // namespace fxcodec 39 40 using fxcodec::ProgressiveDecoderIface; 41 42 #endif // CORE_FXCODEC_PROGRESSIVE_DECODER_IFACE_H_ 43