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// 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.
#include <memory>
#include <utility>
#include "core/fxcodec/codec/codec_module_iface.h"
#include "core/fxcodec/gif/cfx_gif.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_system.h"
#include "third_party/base/span.h"
class CFX_DIBAttribute;
class CCodec_GifModule final : public CodecModuleIface {
class Delegate {
virtual void GifRecordCurrentPosition(uint32_t& cur_pos) = 0;
virtual bool GifInputRecordPositionBuf(uint32_t rcd_pos,
const FX_RECT& img_rc,
int32_t pal_num,
CFX_GifPalette* pal_ptr,
int32_t delay_time,
bool user_input,
int32_t trans_index,
int32_t disposal_method,
bool interlace) = 0;
virtual void GifReadScanline(int32_t row_num, uint8_t* row_buf) = 0;
~CCodec_GifModule() override;
// CodecModuleIface:
FX_FILESIZE GetAvailInput(Context* context) const override;
bool Input(Context* context,
pdfium::span<uint8_t> src_buf,
CFX_DIBAttribute* pAttribute) override;
std::unique_ptr<Context> Start(Delegate* pDelegate);
CFX_GifDecodeStatus ReadHeader(Context* context,
int* width,
int* height,
int* pal_num,
CFX_GifPalette** pal_pp,
int* bg_index,
CFX_DIBAttribute* pAttribute);
std::pair<CFX_GifDecodeStatus, size_t> LoadFrameInfo(Context* context);
CFX_GifDecodeStatus LoadFrame(Context* context,
size_t frame_num,
CFX_DIBAttribute* pAttribute);