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// Copyright 2017 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
#include "core/fxcodec/lgif/cgifdecompressor.h"
#include <utility>
#include "core/fxcodec/codec/ccodec_gifmodule.h"
#include "core/fxcodec/lgif/fx_gif.h"
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
FXGIF_Context::FXGIF_Context() {}
FXGIF_Context::~FXGIF_Context() {}
CGifDecompressor::CGifDecompressor(FXGIF_Context* p, char* error_string)
: global_pal_num(0),
img_row_offset(0),
img_row_avail_size(0),
avail_in(0),
decode_status(GIF_D_STATUS_SIG),
skip_size(0),
err_ptr(error_string),
gif_context(p),
next_in(nullptr),
width(0),
height(0),
bc_index(0),
pixel_aspect(0),
global_sort_flag(0),
global_color_resolution(0),
img_pass_num(0) {}
CGifDecompressor::~CGifDecompressor() {}
void CGifDecompressor::ErrorData(const char* err_msg) {
strncpy(err_ptr, err_msg, GIF_MAX_ERROR_SIZE - 1);
longjmp(jmpbuf, 1);
}
void CGifDecompressor::RecordCurrentPosition(uint32_t* cur_pos_ptr) {
gif_context->parent_ptr->GetDelegate()->GifRecordCurrentPosition(
*cur_pos_ptr);
}
void CGifDecompressor::ReadScanline(int32_t row_num, uint8_t* row_buf) {
gif_context->parent_ptr->GetDelegate()->GifReadScanline(row_num, row_buf);
}
bool CGifDecompressor::GetRecordPosition(uint32_t cur_pos,
int32_t left,
int32_t top,
int32_t width,
int32_t height,
int32_t pal_num,
GifPalette* pal_ptr,
int32_t delay_time,
bool user_input,
int32_t trans_index,
int32_t disposal_method,
bool interlace) {
return gif_context->parent_ptr->GetDelegate()->GifInputRecordPositionBuf(
cur_pos, FX_RECT(left, top, left + width, top + height), pal_num, pal_ptr,
delay_time, user_input, trans_index, disposal_method, interlace);
}
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