Move core/src/ up to core/.

This CL moves the core/src/ files up to core/ and fixes up the include guards,
includes and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1800523005 .

1 files changed, 0 insertions, 1229 deletions

diff --git a/core/src/fxcodec/lgif/fx_gif.cpp b/core/src/fxcodec/lgif/fx_gif.cpp
deleted file mode 100644
index a4de72978a..0000000000
--- a/core/src/fxcodec/lgif/fx_gif.cpp
+++ /dev/null
@@ -1,1229 +0,0 @@
-// Copyright 2014 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/src/fxcodec/lgif/fx_gif.h"
-
-#include "core/src/fxcodec/lbmp/fx_bmp.h"
-
-void CGifLZWDecoder::Input(uint8_t* src_buf, FX_DWORD src_size) {
-  next_in = src_buf;
-  avail_in = src_size;
-}
-FX_DWORD CGifLZWDecoder::GetAvailInput() {
-  return avail_in;
-}
-void CGifLZWDecoder::InitTable(uint8_t code_len) {
-  code_size = code_len;
-  code_clear = 1 << code_size;
-  code_end = code_clear + 1;
-  bits_left = 0;
-  code_store = 0;
-  next_in = NULL;
-  avail_in = 0;
-  stack_size = 0;
-  code_first = 0;
-  ClearTable();
-}
-void CGifLZWDecoder::ClearTable() {
-  code_size_cur = code_size + 1;
-  code_next = code_end + 1;
-  code_old = (FX_WORD)-1;
-  FXSYS_memset(code_table, 0, sizeof(tag_Table) * GIF_MAX_LZW_CODE);
-  FXSYS_memset(stack, 0, GIF_MAX_LZW_CODE);
-  for (FX_WORD i = 0; i < code_clear; i++) {
-    code_table[i].suffix = (uint8_t)i;
-  }
-}
-void CGifLZWDecoder::DecodeString(FX_WORD code) {
-  stack_size = 0;
-  while (TRUE) {
-    ASSERT(code <= code_next);
-    if (code < code_clear || code > code_next) {
-      break;
-    }
-    stack[GIF_MAX_LZW_CODE - 1 - stack_size++] = code_table[code].suffix;
-    code = code_table[code].prefix;
-  }
-  stack[GIF_MAX_LZW_CODE - 1 - stack_size++] = (uint8_t)code;
-  code_first = (uint8_t)code;
-}
-void CGifLZWDecoder::AddCode(FX_WORD prefix_code, uint8_t append_char) {
-  if (code_next == GIF_MAX_LZW_CODE) {
-    return;
-  }
-  code_table[code_next].prefix = prefix_code;
-  code_table[code_next].suffix = append_char;
-  if (++code_next < GIF_MAX_LZW_CODE) {
-    if (code_next >> code_size_cur) {
-      code_size_cur++;
-    }
-  }
-}
-int32_t CGifLZWDecoder::Decode(uint8_t* des_buf, FX_DWORD& des_size) {
-  if (des_size == 0) {
-    return 3;
-  }
-  FX_DWORD i = 0;
-  if (stack_size != 0) {
-    if (des_size < stack_size) {
-      FXSYS_memcpy(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size], des_size);
-      stack_size -= (FX_WORD)des_size;
-      return 3;
-    }
-    FXSYS_memcpy(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size], stack_size);
-    des_buf += stack_size;
-    i += stack_size;
-    stack_size = 0;
-  }
-  FX_WORD code = 0;
-  while (i <= des_size && (avail_in > 0 || bits_left >= code_size_cur)) {
-    if (code_size_cur > 12) {
-      if (err_msg_ptr) {
-        FXSYS_strncpy(err_msg_ptr, "Code Length Out Of Range",
-                      GIF_MAX_ERROR_SIZE - 1);
-      }
-      return 0;
-    }
-    if (avail_in > 0) {
-      code_store |= (*next_in++) << bits_left;
-      avail_in--;
-      bits_left += 8;
-    }
-    while (bits_left >= code_size_cur) {
-      code = (FX_WORD)code_store & ((1 << code_size_cur) - 1);
-      code_store >>= code_size_cur;
-      bits_left -= code_size_cur;
-      if (code == code_clear) {
-        ClearTable();
-        continue;
-      } else if (code == code_end) {
-        des_size = i;
-        return 1;
-      } else {
-        if (code_old != (FX_WORD)-1) {
-          if (code_next < GIF_MAX_LZW_CODE) {
-            if (code == code_next) {
-              AddCode(code_old, code_first);
-              DecodeString(code);
-            } else if (code > code_next) {
-              if (err_msg_ptr) {
-                FXSYS_strncpy(err_msg_ptr, "Decode Error, Out Of Range",
-                              GIF_MAX_ERROR_SIZE - 1);
-              }
-              return 0;
-            } else {
-              DecodeString(code);
-              uint8_t append_char = stack[GIF_MAX_LZW_CODE - stack_size];
-              AddCode(code_old, append_char);
-            }
-          }
-        } else {
-          DecodeString(code);
-        }
-        code_old = code;
-        if (i + stack_size > des_size) {
-          FXSYS_memcpy(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size],
-                       des_size - i);
-          stack_size -= (FX_WORD)(des_size - i);
-          return 3;
-        }
-        FXSYS_memcpy(des_buf, &stack[GIF_MAX_LZW_CODE - stack_size],
-                     stack_size);
-        des_buf += stack_size;
-        i += stack_size;
-        stack_size = 0;
-      }
-    }
-  }
-  if (avail_in == 0) {
-    des_size = i;
-    return 2;
-  }
-  return 0;
-}
-static FX_BOOL gif_grow_buf(uint8_t*& dst_buf,
-                            FX_DWORD& dst_len,
-                            FX_DWORD size) {
-  if (dst_len < size) {
-    FX_DWORD len_org = dst_len;
-    while (dst_buf && dst_len < size) {
-      dst_len <<= 1;
-      dst_buf = FX_Realloc(uint8_t, dst_buf, dst_len);
-    }
-    if (dst_buf == NULL) {
-      dst_len = size;
-      dst_buf = FX_Realloc(uint8_t, dst_buf, dst_len);
-      if (dst_buf == NULL) {
-        return FALSE;
-      }
-    }
-    FXSYS_memset(dst_buf + len_org, 0, dst_len - len_org);
-    return dst_buf != NULL;
-  }
-  return TRUE;
-}
-static inline void gif_cut_index(uint8_t& val,
-                                 FX_DWORD index,
-                                 uint8_t index_bit,
-                                 uint8_t index_bit_use,
-                                 uint8_t bit_use) {
-  FX_DWORD cut = ((1 << (index_bit - index_bit_use)) - 1) << index_bit_use;
-  val |= ((index & cut) >> index_bit_use) << bit_use;
-}
-static inline uint8_t gif_cut_buf(const uint8_t* buf,
-                                  FX_DWORD& offset,
-                                  uint8_t bit_cut,
-                                  uint8_t& bit_offset,
-                                  FX_DWORD& bit_num) {
-  if (bit_cut != 8) {
-    FX_WORD index = 0;
-    index |= ((1 << bit_cut) - 1) << (7 - bit_offset);
-    uint8_t ret = ((index & buf[offset]) >> (7 - bit_offset));
-    bit_offset += bit_cut;
-    if (bit_offset >= 8) {
-      if (bit_offset > 8) {
-        ret |= ((index & (buf[offset + 1] << 8)) >> 8);
-      }
-      bit_offset -= 8;
-      offset++;
-    }
-    bit_num += bit_cut;
-    return ret;
-  }
-  bit_num += bit_cut;
-  return buf[offset++];
-}
-CGifLZWEncoder::CGifLZWEncoder() {
-  FXSYS_memset(this, 0, sizeof(CGifLZWEncoder));
-}
-CGifLZWEncoder::~CGifLZWEncoder() {}
-void CGifLZWEncoder::ClearTable() {
-  index_bit_cur = code_size + 1;
-  index_num = code_end + 1;
-  table_cur = code_end + 1;
-  for (FX_WORD i = 0; i < GIF_MAX_LZW_CODE; i++) {
-    code_table[i].prefix = 0;
-    code_table[i].suffix = 0;
-  }
-}
-void CGifLZWEncoder::Start(uint8_t code_len,
-                           const uint8_t* src_buf,
-                           uint8_t*& dst_buf,
-                           FX_DWORD& offset) {
-  code_size = code_len + 1;
-  src_bit_cut = code_size;
-  if (code_len == 0) {
-    src_bit_cut = 1;
-    code_size = 2;
-  }
-  code_clear = 1 << code_size;
-  code_end = code_clear + 1;
-  dst_buf[offset++] = code_size;
-  bit_offset = 0;
-  ClearTable();
-  src_offset = 0;
-  src_bit_offset = 0;
-  src_bit_num = 0;
-  code_table[index_num].prefix = gif_cut_buf(src_buf, src_offset, src_bit_cut,
-                                             src_bit_offset, src_bit_num);
-  code_table[index_num].suffix = gif_cut_buf(src_buf, src_offset, src_bit_cut,
-                                             src_bit_offset, src_bit_num);
-}
-void CGifLZWEncoder::WriteBlock(uint8_t*& dst_buf,
-                                FX_DWORD& dst_len,
-                                FX_DWORD& offset) {
-  if (!gif_grow_buf(dst_buf, dst_len, offset + GIF_DATA_BLOCK + 1)) {
-    longjmp(jmp, 1);
-  }
-  dst_buf[offset++] = index_buf_len;
-  FXSYS_memcpy(&dst_buf[offset], index_buf, index_buf_len);
-  offset += index_buf_len;
-  FXSYS_memset(index_buf, 0, GIF_DATA_BLOCK);
-  index_buf_len = 0;
-}
-void CGifLZWEncoder::EncodeString(FX_DWORD index,
-                                  uint8_t*& dst_buf,
-                                  FX_DWORD& dst_len,
-                                  FX_DWORD& offset) {
-  uint8_t index_bit_use;
-  index_bit_use = 0;
-  if (index_buf_len == GIF_DATA_BLOCK) {
-    WriteBlock(dst_buf, dst_len, offset);
-  }
-  gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use,
-                bit_offset);
-  if (index_bit_cur <= (8 - bit_offset)) {
-    bit_offset += index_bit_cur;
-  } else if (index_bit_cur <= (16 - bit_offset)) {
-    index_bit_use += (8 - bit_offset);
-    bit_offset = 0;
-    index_buf_len++;
-    if (index_buf_len == GIF_DATA_BLOCK) {
-      WriteBlock(dst_buf, dst_len, offset);
-    }
-    gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use,
-                  bit_offset);
-    bit_offset = index_bit_cur - index_bit_use;
-  } else {
-    index_bit_use += (8 - bit_offset);
-    bit_offset = 0;
-    index_buf_len++;
-    if (index_buf_len == GIF_DATA_BLOCK) {
-      WriteBlock(dst_buf, dst_len, offset);
-    }
-    gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use,
-                  bit_offset);
-    index_bit_use += 8;
-    bit_offset = 0;
-    index_buf_len++;
-    if (index_buf_len == GIF_DATA_BLOCK) {
-      WriteBlock(dst_buf, dst_len, offset);
-    }
-    gif_cut_index(index_buf[index_buf_len], index, index_bit_cur, index_bit_use,
-                  bit_offset);
-    bit_offset = index_bit_cur - index_bit_use;
-  }
-  if (bit_offset == 8) {
-    bit_offset = 0;
-    index_buf_len++;
-    if (index_buf_len == GIF_DATA_BLOCK) {
-      WriteBlock(dst_buf, dst_len, offset);
-    }
-  }
-  if (index == code_end) {
-    index_buf_len++;
-    WriteBlock(dst_buf, dst_len, offset);
-  }
-  if (index_num++ >> index_bit_cur) {
-    index_bit_cur++;
-  }
-}
-FX_BOOL CGifLZWEncoder::Encode(const uint8_t* src_buf,
-                               FX_DWORD src_len,
-                               uint8_t*& dst_buf,
-                               FX_DWORD& dst_len,
-                               FX_DWORD& offset) {
-  uint8_t suffix;
-  if (setjmp(jmp)) {
-    return FALSE;
-  }
-  while (src_bit_num < src_len) {
-    if (!LookUpInTable(src_buf, src_offset, src_bit_offset)) {
-      EncodeString(code_table[index_num].prefix, dst_buf, dst_len, offset);
-      if (index_num == GIF_MAX_LZW_CODE) {
-        suffix = code_table[index_num - 1].suffix;
-        EncodeString(code_clear, dst_buf, dst_len, offset);
-        ClearTable();
-        code_table[index_num].prefix = suffix;
-        code_table[index_num].suffix = gif_cut_buf(
-            src_buf, src_offset, src_bit_cut, src_bit_offset, src_bit_num);
-      } else {
-        code_table[index_num].prefix = code_table[index_num - 1].suffix;
-        code_table[index_num].suffix = gif_cut_buf(
-            src_buf, src_offset, src_bit_cut, src_bit_offset, src_bit_num);
-      }
-    }
-  }
-  src_offset = 0;
-  src_bit_offset = 0;
-  src_bit_num = 0;
-  return TRUE;
-}
-FX_BOOL CGifLZWEncoder::LookUpInTable(const uint8_t* buf,
-                                      FX_DWORD& offset,
-                                      uint8_t& bit_offset) {
-  for (FX_WORD i = table_cur; i < index_num; i++) {
-    if (code_table[i].prefix == code_table[index_num].prefix &&
-        code_table[i].suffix == code_table[index_num].suffix) {
-      code_table[index_num].prefix = i;
-      code_table[index_num].suffix =
-          gif_cut_buf(buf, offset, src_bit_cut, bit_offset, src_bit_num);
-      table_cur = i;
-      return TRUE;
-    }
-  }
-  table_cur = code_end + 1;
-  return FALSE;
-}
-void CGifLZWEncoder::Finish(uint8_t*& dst_buf,
-                            FX_DWORD& dst_len,
-                            FX_DWORD& offset) {
-  EncodeString(code_table[index_num].prefix, dst_buf, dst_len, offset);
-  EncodeString(code_end, dst_buf, dst_len, offset);
-  bit_offset = 0;
-  ClearTable();
-}
-gif_decompress_struct_p gif_create_decompress() {
-  gif_decompress_struct_p gif_ptr =
-      (gif_decompress_struct*)FX_Alloc(uint8_t, sizeof(gif_decompress_struct));
-  if (gif_ptr == NULL) {
-    return NULL;
-  }
-  FXSYS_memset(gif_ptr, 0, sizeof(gif_decompress_struct));
-  gif_ptr->decode_status = GIF_D_STATUS_SIG;
-  gif_ptr->img_ptr_arr_ptr = new CFX_ArrayTemplate<GifImage*>;
-  gif_ptr->cmt_data_ptr = new CFX_ByteString;
-  gif_ptr->pt_ptr_arr_ptr = new CFX_ArrayTemplate<GifPlainText*>;
-  return gif_ptr;
-}
-void gif_destroy_decompress(gif_decompress_struct_pp gif_ptr_ptr) {
-  if (gif_ptr_ptr == NULL || *gif_ptr_ptr == NULL) {
-    return;
-  }
-  gif_decompress_struct_p gif_ptr = *gif_ptr_ptr;
-  *gif_ptr_ptr = NULL;
-  FX_Free(gif_ptr->global_pal_ptr);
-  delete gif_ptr->img_decoder_ptr;
-  if (gif_ptr->img_ptr_arr_ptr) {
-    int32_t size_img_arr = gif_ptr->img_ptr_arr_ptr->GetSize();
-    for (int32_t i = 0; i < size_img_arr; i++) {
-      GifImage* p = gif_ptr->img_ptr_arr_ptr->GetAt(i);
-      FX_Free(p->image_info_ptr);
-      FX_Free(p->image_gce_ptr);
-      FX_Free(p->image_row_buf);
-      if (p->local_pal_ptr && p->local_pal_ptr != gif_ptr->global_pal_ptr) {
-        FX_Free(p->local_pal_ptr);
-      }
-      FX_Free(p);
-    }
-    gif_ptr->img_ptr_arr_ptr->RemoveAll();
-    delete gif_ptr->img_ptr_arr_ptr;
-  }
-  delete gif_ptr->cmt_data_ptr;
-  FX_Free(gif_ptr->gce_ptr);
-  if (gif_ptr->pt_ptr_arr_ptr) {
-    int32_t size_pt_arr = gif_ptr->pt_ptr_arr_ptr->GetSize();
-    for (int32_t i = 0; i < size_pt_arr; i++) {
-      GifPlainText* p = gif_ptr->pt_ptr_arr_ptr->GetAt(i);
-      FX_Free(p->gce_ptr);
-      FX_Free(p->pte_ptr);
-      delete p->string_ptr;
-    }
-    gif_ptr->pt_ptr_arr_ptr->RemoveAll();
-    delete gif_ptr->pt_ptr_arr_ptr;
-  }
-  FX_Free(gif_ptr);
-}
-gif_compress_struct_p gif_create_compress() {
-  gif_compress_struct_p gif_ptr =
-      (gif_compress_struct*)FX_Alloc(uint8_t, sizeof(gif_compress_struct));
-  if (gif_ptr == NULL) {
-    return NULL;
-  }
-  FXSYS_memset(gif_ptr, 0, sizeof(gif_compress_struct));
-  gif_ptr->img_encoder_ptr = new CGifLZWEncoder;
-  gif_ptr->header_ptr = (GifHeader*)FX_Alloc(uint8_t, sizeof(GifHeader));
-  if (gif_ptr->header_ptr == NULL) {
-    delete (gif_ptr->img_encoder_ptr);
-    FX_Free(gif_ptr);
-    return NULL;
-  }
-  FXSYS_memcpy(gif_ptr->header_ptr->signature, GIF_SIGNATURE, 3);
-  FXSYS_memcpy(gif_ptr->header_ptr->version, "89a", 3);
-  gif_ptr->lsd_ptr = (GifLSD*)FX_Alloc(uint8_t, sizeof(GifLSD));
-  if (gif_ptr->lsd_ptr == NULL) {
-    FX_Free(gif_ptr->header_ptr);
-    delete (gif_ptr->img_encoder_ptr);
-    FX_Free(gif_ptr);
-    return NULL;
-  }
-  FXSYS_memset(gif_ptr->lsd_ptr, 0, sizeof(GifLSD));
-  gif_ptr->image_info_ptr =
-      (GifImageInfo*)FX_Alloc(uint8_t, sizeof(GifImageInfo));
-  if (gif_ptr->image_info_ptr == NULL) {
-    FX_Free(gif_ptr->lsd_ptr);
-    FX_Free(gif_ptr->header_ptr);
-    delete (gif_ptr->img_encoder_ptr);
-    FX_Free(gif_ptr);
-    return NULL;
-  }
-  FXSYS_memset(gif_ptr->image_info_ptr, 0, sizeof(GifImageInfo));
-  gif_ptr->gce_ptr = (GifGCE*)FX_Alloc(uint8_t, sizeof(GifGCE));
-  if (gif_ptr->gce_ptr == NULL) {
-    FX_Free(gif_ptr->image_info_ptr);
-    FX_Free(gif_ptr->lsd_ptr);
-    FX_Free(gif_ptr->header_ptr);
-    delete (gif_ptr->img_encoder_ptr);
-    FX_Free(gif_ptr);
-    return NULL;
-  }
-  gif_ptr->pte_ptr = (GifPTE*)FX_Alloc(uint8_t, sizeof(GifPTE));
-  if (gif_ptr->pte_ptr == NULL) {
-    FX_Free(gif_ptr->gce_ptr);
-    FX_Free(gif_ptr->image_info_ptr);
-    FX_Free(gif_ptr->lsd_ptr);
-    FX_Free(gif_ptr->header_ptr);
-    delete (gif_ptr->img_encoder_ptr);
-    FX_Free(gif_ptr);
-    return NULL;
-  }
-  FXSYS_memset(gif_ptr->pte_ptr, 0, sizeof(GifPTE));
-  gif_ptr->pte_ptr->block_size = 12;
-  return gif_ptr;
-}
-void gif_destroy_compress(gif_compress_struct_pp gif_ptr_ptr) {
-  if (gif_ptr_ptr == NULL || *gif_ptr_ptr == NULL) {
-    return;
-  }
-  gif_compress_struct_p gif_ptr = *gif_ptr_ptr;
-  *gif_ptr_ptr = NULL;
-  FX_Free(gif_ptr->header_ptr);
-  FX_Free(gif_ptr->lsd_ptr);
-  FX_Free(gif_ptr->global_pal);
-  FX_Free(gif_ptr->image_info_ptr);
-  FX_Free(gif_ptr->local_pal);
-  delete gif_ptr->img_encoder_ptr;
-  FX_Free(gif_ptr->gce_ptr);
-  FX_Free(gif_ptr->cmt_data_ptr);
-  FX_Free(gif_ptr->pte_ptr);
-  FX_Free(gif_ptr);
-}
-void gif_error(gif_decompress_struct_p gif_ptr, const FX_CHAR* err_msg) {
-  if (gif_ptr && gif_ptr->gif_error_fn) {
-    gif_ptr->gif_error_fn(gif_ptr, err_msg);
-  }
-}
-void gif_warn(gif_decompress_struct_p gif_ptr, const FX_CHAR* err_msg) {}
-int32_t gif_read_header(gif_decompress_struct_p gif_ptr) {
-  if (gif_ptr == NULL) {
-    return 0;
-  }
-  FX_DWORD skip_size_org = gif_ptr->skip_size;
-  ASSERT(sizeof(GifHeader) == 6);
-  GifHeader* gif_header_ptr = NULL;
-  if (gif_read_data(gif_ptr, (uint8_t**)&gif_header_ptr, 6) == NULL) {
-    return 2;
-  }
-  if (FXSYS_strncmp(gif_header_ptr->signature, GIF_SIGNATURE, 3) != 0 ||
-      gif_header_ptr->version[0] != '8' || gif_header_ptr->version[2] != 'a') {
-    gif_error(gif_ptr, "Not A Gif Image");
-    return 0;
-  }
-  ASSERT(sizeof(GifLSD) == 7);
-  GifLSD* gif_lsd_ptr = NULL;
-  if (gif_read_data(gif_ptr, (uint8_t**)&gif_lsd_ptr, 7) == NULL) {
-    gif_ptr->skip_size = skip_size_org;
-    return 2;
-  }
-  if (((GifGF*)&gif_lsd_ptr->global_flag)->global_pal) {
-    gif_ptr->global_pal_num = 2
-                              << ((GifGF*)&gif_lsd_ptr->global_flag)->pal_bits;
-    ASSERT(sizeof(GifPalette) == 3);
-    int32_t global_pal_size = gif_ptr->global_pal_num * 3;
-    uint8_t* global_pal_ptr = NULL;
-    if (gif_read_data(gif_ptr, &global_pal_ptr, global_pal_size) == NULL) {
-      gif_ptr->skip_size = skip_size_org;
-      return 2;
-    }
-    gif_ptr->global_sort_flag = ((GifGF*)&gif_lsd_ptr->global_flag)->sort_flag;
-    gif_ptr->global_color_resolution =
-        ((GifGF*)&gif_lsd_ptr->global_flag)->color_resolution;
-    FX_Free(gif_ptr->global_pal_ptr);
-    gif_ptr->global_pal_ptr = (GifPalette*)FX_Alloc(uint8_t, global_pal_size);
-    FXSYS_memcpy(gif_ptr->global_pal_ptr, global_pal_ptr, global_pal_size);
-  }
-  gif_ptr->width = (int)GetWord_LSBFirst((uint8_t*)&gif_lsd_ptr->width);
-  gif_ptr->height = (int)GetWord_LSBFirst((uint8_t*)&gif_lsd_ptr->height);
-  gif_ptr->bc_index = gif_lsd_ptr->bc_index;
-  gif_ptr->pixel_aspect = gif_lsd_ptr->pixel_aspect;
-  return 1;
-}
-int32_t gif_get_frame(gif_decompress_struct_p gif_ptr) {
-  if (gif_ptr == NULL) {
-    return 0;
-  }
-  int32_t ret = 1;
-  while (TRUE) {
-    switch (gif_ptr->decode_status) {
-      case GIF_D_STATUS_TAIL:
-        return 1;
-      case GIF_D_STATUS_SIG: {
-        uint8_t* sig_ptr = NULL;
-        if (gif_read_data(gif_ptr, &sig_ptr, 1) == NULL) {
-          return 2;
-        }
-        switch (*sig_ptr) {
-          case GIF_SIG_EXTENSION:
-            gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT);
-            continue;
-          case GIF_SIG_IMAGE:
-            gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_INFO);
-            continue;
-          case GIF_SIG_TRAILER:
-            gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
-            return 1;
-          default:
-            if (gif_ptr->avail_in) {
-              gif_warn(gif_ptr, "The Gif File has non_standard Tag!");
-              gif_save_decoding_status(gif_ptr, GIF_D_STATUS_SIG);
-              continue;
-            }
-            gif_warn(gif_ptr, "The Gif File Doesn't have Trailer Tag!");
-            return 1;
-        }
-      }
-      case GIF_D_STATUS_EXT: {
-        uint8_t* ext_ptr = NULL;
-        if (gif_read_data(gif_ptr, &ext_ptr, 1) == NULL) {
-          return 2;
-        }
-        switch (*ext_ptr) {
-          case GIF_BLOCK_CE:
-            gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_CE);
-            continue;
-          case GIF_BLOCK_GCE:
-            gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_GCE);
-            continue;
-          case GIF_BLOCK_PTE:
-            gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_PTE);
-            continue;
-          default: {
-            int32_t status = GIF_D_STATUS_EXT_UNE;
-            if (*ext_ptr == GIF_BLOCK_PTE) {
-              status = GIF_D_STATUS_EXT_PTE;
-            }
-            gif_save_decoding_status(gif_ptr, status);
-            continue;
-          }
-        }
-      }
-      case GIF_D_STATUS_IMG_INFO: {
-        ret = gif_decode_image_info(gif_ptr);
-        if (ret != 1) {
-          return ret;
-        }
-        continue;
-      }
-      case GIF_D_STATUS_IMG_DATA: {
-        uint8_t* data_size_ptr = NULL;
-        uint8_t* data_ptr = NULL;
-        FX_DWORD skip_size_org = gif_ptr->skip_size;
-        if (gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-          return 2;
-        }
-        while (*data_size_ptr != GIF_BLOCK_TERMINAL) {
-          if (gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL) {
-            gif_ptr->skip_size = skip_size_org;
-            return 2;
-          }
-          gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
-          skip_size_org = gif_ptr->skip_size;
-          if (gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-            return 2;
-          }
-        }
-        gif_save_decoding_status(gif_ptr, GIF_D_STATUS_SIG);
-        continue;
-      }
-      default: {
-        ret = gif_decode_extension(gif_ptr);
-        if (ret != 1) {
-          return ret;
-        }
-        continue;
-      }
-    }
-  }
-  return 1;
-}
-void gif_takeover_gce_ptr(gif_decompress_struct_p gif_ptr,
-                          GifGCE** gce_ptr_ptr) {
-  *gce_ptr_ptr = NULL;
-  if (gif_ptr->gce_ptr && gce_ptr_ptr) {
-    *gce_ptr_ptr = gif_ptr->gce_ptr;
-    gif_ptr->gce_ptr = NULL;
-  }
-}
-int32_t gif_decode_extension(gif_decompress_struct_p gif_ptr) {
-  uint8_t* data_size_ptr = NULL;
-  uint8_t* data_ptr = NULL;
-  FX_DWORD skip_size_org = gif_ptr->skip_size;
-  switch (gif_ptr->decode_status) {
-    case GIF_D_STATUS_EXT_CE: {
-      if (gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-        gif_ptr->skip_size = skip_size_org;
-        return 2;
-      }
-      gif_ptr->cmt_data_ptr->Empty();
-      while (*data_size_ptr != GIF_BLOCK_TERMINAL) {
-        uint8_t data_size = *data_size_ptr;
-        if (gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL ||
-            gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-          gif_ptr->skip_size = skip_size_org;
-          return 2;
-        }
-        *(gif_ptr->cmt_data_ptr) +=
-            CFX_ByteString((const FX_CHAR*)data_ptr, data_size);
-      }
-    } break;
-    case GIF_D_STATUS_EXT_PTE: {
-      ASSERT(sizeof(GifPTE) == 13);
-      GifPTE* gif_pte_ptr = NULL;
-      if (gif_read_data(gif_ptr, (uint8_t**)&gif_pte_ptr, 13) == NULL) {
-        return 2;
-      }
-      GifPlainText* gif_pt_ptr = FX_Alloc(GifPlainText, 1);
-      FXSYS_memset(gif_pt_ptr, 0, sizeof(GifPlainText));
-      gif_takeover_gce_ptr(gif_ptr, &gif_pt_ptr->gce_ptr);
-      gif_pt_ptr->pte_ptr = (GifPTE*)FX_Alloc(uint8_t, sizeof(GifPTE));
-      gif_pt_ptr->string_ptr = new CFX_ByteString;
-      gif_pt_ptr->pte_ptr->block_size = gif_pte_ptr->block_size;
-      gif_pt_ptr->pte_ptr->grid_left =
-          GetWord_LSBFirst((uint8_t*)&gif_pte_ptr->grid_left);
-      gif_pt_ptr->pte_ptr->grid_top =
-          GetWord_LSBFirst((uint8_t*)&gif_pte_ptr->grid_top);
-      gif_pt_ptr->pte_ptr->grid_width =
-          GetWord_LSBFirst((uint8_t*)&gif_pte_ptr->grid_width);
-      gif_pt_ptr->pte_ptr->grid_height =
-          GetWord_LSBFirst((uint8_t*)&gif_pte_ptr->grid_height);
-      gif_pt_ptr->pte_ptr->char_width = gif_pte_ptr->char_width;
-      gif_pt_ptr->pte_ptr->char_height = gif_pte_ptr->char_height;
-      gif_pt_ptr->pte_ptr->fc_index = gif_pte_ptr->fc_index;
-      gif_pt_ptr->pte_ptr->bc_index = gif_pte_ptr->bc_index;
-      if (gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-        gif_ptr->skip_size = skip_size_org;
-        if (gif_pt_ptr) {
-          FX_Free(gif_pt_ptr->gce_ptr);
-          FX_Free(gif_pt_ptr->pte_ptr);
-          delete gif_pt_ptr->string_ptr;
-          FX_Free(gif_pt_ptr);
-        }
-        return 2;
-      }
-      while (*data_size_ptr != GIF_BLOCK_TERMINAL) {
-        uint8_t data_size = *data_size_ptr;
-        if (gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL ||
-            gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-          gif_ptr->skip_size = skip_size_org;
-          if (gif_pt_ptr) {
-            FX_Free(gif_pt_ptr->gce_ptr);
-            FX_Free(gif_pt_ptr->pte_ptr);
-            delete gif_pt_ptr->string_ptr;
-            FX_Free(gif_pt_ptr);
-          }
-          return 2;
-        }
-        *(gif_pt_ptr->string_ptr) +=
-            CFX_ByteString((const FX_CHAR*)data_ptr, data_size);
-      }
-      gif_ptr->pt_ptr_arr_ptr->Add(gif_pt_ptr);
-    } break;
-    case GIF_D_STATUS_EXT_GCE: {
-      ASSERT(sizeof(GifGCE) == 5);
-      GifGCE* gif_gce_ptr = NULL;
-      if (gif_read_data(gif_ptr, (uint8_t**)&gif_gce_ptr, 6) == NULL) {
-        return 2;
-      }
-      if (gif_ptr->gce_ptr == NULL) {
-        gif_ptr->gce_ptr = (GifGCE*)FX_Alloc(uint8_t, sizeof(GifGCE));
-      }
-      gif_ptr->gce_ptr->block_size = gif_gce_ptr->block_size;
-      gif_ptr->gce_ptr->gce_flag = gif_gce_ptr->gce_flag;
-      gif_ptr->gce_ptr->delay_time =
-          GetWord_LSBFirst((uint8_t*)&gif_gce_ptr->delay_time);
-      gif_ptr->gce_ptr->trans_index = gif_gce_ptr->trans_index;
-    } break;
-    default: {
-      if (gif_ptr->decode_status == GIF_D_STATUS_EXT_PTE) {
-        FX_Free(gif_ptr->gce_ptr);
-        gif_ptr->gce_ptr = NULL;
-      }
-      if (gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-        return 2;
-      }
-      while (*data_size_ptr != GIF_BLOCK_TERMINAL) {
-        if (gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL ||
-            gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-          gif_ptr->skip_size = skip_size_org;
-          return 2;
-        }
-      }
-    }
-  }
-  gif_save_decoding_status(gif_ptr, GIF_D_STATUS_SIG);
-  return 1;
-}
-int32_t gif_decode_image_info(gif_decompress_struct_p gif_ptr) {
-  if (gif_ptr->width == 0 || gif_ptr->height == 0) {
-    gif_error(gif_ptr, "No Image Header Info");
-    return 0;
-  }
-  FX_DWORD skip_size_org = gif_ptr->skip_size;
-  ASSERT(sizeof(GifImageInfo) == 9);
-  GifImageInfo* gif_img_info_ptr = NULL;
-  if (gif_read_data(gif_ptr, (uint8_t**)&gif_img_info_ptr, 9) == NULL) {
-    return 2;
-  }
-  GifImage* gif_image_ptr = (GifImage*)FX_Alloc(uint8_t, sizeof(GifImage));
-  FXSYS_memset(gif_image_ptr, 0, sizeof(GifImage));
-  gif_image_ptr->image_info_ptr =
-      (GifImageInfo*)FX_Alloc(uint8_t, sizeof(GifImageInfo));
-  gif_image_ptr->image_info_ptr->left =
-      GetWord_LSBFirst((uint8_t*)&gif_img_info_ptr->left);
-  gif_image_ptr->image_info_ptr->top =
-      GetWord_LSBFirst((uint8_t*)&gif_img_info_ptr->top);
-  gif_image_ptr->image_info_ptr->width =
-      GetWord_LSBFirst((uint8_t*)&gif_img_info_ptr->width);
-  gif_image_ptr->image_info_ptr->height =
-      GetWord_LSBFirst((uint8_t*)&gif_img_info_ptr->height);
-  gif_image_ptr->image_info_ptr->local_flag = gif_img_info_ptr->local_flag;
-  if (gif_image_ptr->image_info_ptr->left +
-              gif_image_ptr->image_info_ptr->width >
-          gif_ptr->width ||
-      gif_image_ptr->image_info_ptr->top +
-              gif_image_ptr->image_info_ptr->height >
-          gif_ptr->height) {
-    FX_Free(gif_image_ptr->image_info_ptr);
-    FX_Free(gif_image_ptr->image_row_buf);
-    FX_Free(gif_image_ptr);
-    gif_error(gif_ptr, "Image Data Out Of LSD, The File May Be Corrupt");
-    return 0;
-  }
-  GifLF* gif_img_info_lf_ptr = (GifLF*)&gif_img_info_ptr->local_flag;
-  if (gif_img_info_lf_ptr->local_pal) {
-    ASSERT(sizeof(GifPalette) == 3);
-    int32_t loc_pal_size = (2 << gif_img_info_lf_ptr->pal_bits) * 3;
-    uint8_t* loc_pal_ptr = NULL;
-    if (gif_read_data(gif_ptr, &loc_pal_ptr, loc_pal_size) == NULL) {
-      gif_ptr->skip_size = skip_size_org;
-      FX_Free(gif_image_ptr->image_info_ptr);
-      FX_Free(gif_image_ptr->image_row_buf);
-      FX_Free(gif_image_ptr);
-      return 2;
-    }
-    gif_image_ptr->local_pal_ptr =
-        (GifPalette*)gif_ptr->gif_ask_buf_for_pal_fn(gif_ptr, loc_pal_size);
-    if (gif_image_ptr->local_pal_ptr) {
-      FXSYS_memcpy((uint8_t*)gif_image_ptr->local_pal_ptr, loc_pal_ptr,
-                   loc_pal_size);
-    }
-  }
-  uint8_t* code_size_ptr = NULL;
-  if (gif_read_data(gif_ptr, &code_size_ptr, 1) == NULL) {
-    gif_ptr->skip_size = skip_size_org;
-    FX_Free(gif_image_ptr->image_info_ptr);
-    FX_Free(gif_image_ptr->local_pal_ptr);
-    FX_Free(gif_image_ptr->image_row_buf);
-    FX_Free(gif_image_ptr);
-    return 2;
-  }
-  gif_image_ptr->image_code_size = *code_size_ptr;
-  gif_ptr->gif_record_current_position_fn(gif_ptr,
-                                          &gif_image_ptr->image_data_pos);
-  gif_image_ptr->image_data_pos += gif_ptr->skip_size;
-  gif_takeover_gce_ptr(gif_ptr, &gif_image_ptr->image_gce_ptr);
-  gif_ptr->img_ptr_arr_ptr->Add(gif_image_ptr);
-  gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
-  return 1;
-}
-int32_t gif_load_frame(gif_decompress_struct_p gif_ptr, int32_t frame_num) {
-  if (gif_ptr == NULL || frame_num < 0 ||
-      frame_num >= gif_ptr->img_ptr_arr_ptr->GetSize()) {
-    return 0;
-  }
-  uint8_t* data_size_ptr = NULL;
-  uint8_t* data_ptr = NULL;
-  FX_DWORD skip_size_org = gif_ptr->skip_size;
-  GifImage* gif_image_ptr = gif_ptr->img_ptr_arr_ptr->GetAt(frame_num);
-  FX_DWORD gif_img_row_bytes = gif_image_ptr->image_info_ptr->width;
-  if (gif_ptr->decode_status == GIF_D_STATUS_TAIL) {
-    if (gif_image_ptr->image_row_buf) {
-      FX_Free(gif_image_ptr->image_row_buf);
-      gif_image_ptr->image_row_buf = NULL;
-    }
-    gif_image_ptr->image_row_buf = FX_Alloc(uint8_t, gif_img_row_bytes);
-    GifGCE* gif_img_gce_ptr = gif_image_ptr->image_gce_ptr;
-    int32_t loc_pal_num =
-        ((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)->local_pal
-            ? (2 << ((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)
-                        ->pal_bits)
-            : 0;
-    gif_ptr->avail_in = 0;
-    if (gif_img_gce_ptr == NULL) {
-      FX_BOOL bRes = gif_ptr->gif_get_record_position_fn(
-          gif_ptr, gif_image_ptr->image_data_pos,
-          gif_image_ptr->image_info_ptr->left,
-          gif_image_ptr->image_info_ptr->top,
-          gif_image_ptr->image_info_ptr->width,
-          gif_image_ptr->image_info_ptr->height, loc_pal_num,
-          gif_image_ptr->local_pal_ptr, 0, 0, -1, 0,
-          (FX_BOOL)((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)
-              ->interlace);
-      if (!bRes) {
-        FX_Free(gif_image_ptr->image_row_buf);
-        gif_image_ptr->image_row_buf = NULL;
-        gif_error(gif_ptr, "Error Read Record Position Data");
-        return 0;
-      }
-    } else {
-      FX_BOOL bRes = gif_ptr->gif_get_record_position_fn(
-          gif_ptr, gif_image_ptr->image_data_pos,
-          gif_image_ptr->image_info_ptr->left,
-          gif_image_ptr->image_info_ptr->top,
-          gif_image_ptr->image_info_ptr->width,
-          gif_image_ptr->image_info_ptr->height, loc_pal_num,
-          gif_image_ptr->local_pal_ptr,
-          (int32_t)gif_image_ptr->image_gce_ptr->delay_time,
-          (FX_BOOL)((GifCEF*)&gif_image_ptr->image_gce_ptr->gce_flag)
-              ->user_input,
-          ((GifCEF*)&gif_image_ptr->image_gce_ptr->gce_flag)->transparency
-              ? (int32_t)gif_image_ptr->image_gce_ptr->trans_index
-              : -1,
-          (int32_t)((GifCEF*)&gif_image_ptr->image_gce_ptr->gce_flag)
-              ->disposal_method,
-          (FX_BOOL)((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)
-              ->interlace);
-      if (!bRes) {
-        FX_Free(gif_image_ptr->image_row_buf);
-        gif_image_ptr->image_row_buf = NULL;
-        gif_error(gif_ptr, "Error Read Record Position Data");
-        return 0;
-      }
-    }
-    if (gif_ptr->img_decoder_ptr == NULL) {
-      gif_ptr->img_decoder_ptr = new CGifLZWDecoder(gif_ptr->err_ptr);
-    }
-    gif_ptr->img_decoder_ptr->InitTable(gif_image_ptr->image_code_size);
-    gif_ptr->img_row_offset = 0;
-    gif_ptr->img_row_avail_size = 0;
-    gif_ptr->img_pass_num = 0;
-    gif_image_ptr->image_row_num = 0;
-    gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
-  }
-  CGifLZWDecoder* img_decoder_ptr = gif_ptr->img_decoder_ptr;
-  if (gif_ptr->decode_status == GIF_D_STATUS_IMG_DATA) {
-    if (gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-      return 2;
-    }
-    if (*data_size_ptr != GIF_BLOCK_TERMINAL) {
-      if (gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL) {
-        gif_ptr->skip_size = skip_size_org;
-        return 2;
-      }
-      img_decoder_ptr->Input(data_ptr, *data_size_ptr);
-      gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
-      gif_ptr->img_row_offset += gif_ptr->img_row_avail_size;
-      gif_ptr->img_row_avail_size = gif_img_row_bytes - gif_ptr->img_row_offset;
-      int32_t ret = img_decoder_ptr->Decode(
-          gif_image_ptr->image_row_buf + gif_ptr->img_row_offset,
-          gif_ptr->img_row_avail_size);
-      if (ret == 0) {
-        FX_Free(gif_image_ptr->image_row_buf);
-        gif_image_ptr->image_row_buf = NULL;
-        gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
-        gif_error(gif_ptr, "Decode Image Data Error");
-        return 0;
-      }
-      while (ret != 0) {
-        if (ret == 1) {
-          gif_ptr->gif_get_row_fn(gif_ptr, gif_image_ptr->image_row_num,
-                                  gif_image_ptr->image_row_buf);
-          FX_Free(gif_image_ptr->image_row_buf);
-          gif_image_ptr->image_row_buf = NULL;
-          gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
-          return 1;
-        }
-        if (ret == 2) {
-          ASSERT(img_decoder_ptr->GetAvailInput() == 0);
-          skip_size_org = gif_ptr->skip_size;
-          if (gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
-            return 2;
-          }
-          if (*data_size_ptr != GIF_BLOCK_TERMINAL) {
-            if (gif_read_data(gif_ptr, &data_ptr, *data_size_ptr) == NULL) {
-              gif_ptr->skip_size = skip_size_org;
-              return 2;
-            }
-            img_decoder_ptr->Input(data_ptr, *data_size_ptr);
-            gif_save_decoding_status(gif_ptr, GIF_D_STATUS_IMG_DATA);
-            gif_ptr->img_row_offset += gif_ptr->img_row_avail_size;
-            gif_ptr->img_row_avail_size =
-                gif_img_row_bytes - gif_ptr->img_row_offset;
-            ret = img_decoder_ptr->Decode(
-                gif_image_ptr->image_row_buf + gif_ptr->img_row_offset,
-                gif_ptr->img_row_avail_size);
-          }
-        }
-        if (ret == 3) {
-          if (((GifLF*)&gif_image_ptr->image_info_ptr->local_flag)->interlace) {
-            gif_ptr->gif_get_row_fn(gif_ptr, gif_image_ptr->image_row_num,
-                                    gif_image_ptr->image_row_buf);
-            gif_image_ptr->image_row_num +=
-                s_gif_interlace_step[gif_ptr->img_pass_num];
-            if (gif_image_ptr->image_row_num >=
-                (int32_t)gif_image_ptr->image_info_ptr->height) {
-              gif_ptr->img_pass_num++;
-              gif_image_ptr->image_row_num =
-                  s_gif_interlace_step[gif_ptr->img_pass_num] / 2;
-            }
-          } else {
-            gif_ptr->gif_get_row_fn(gif_ptr, gif_image_ptr->image_row_num++,
-                                    gif_image_ptr->image_row_buf);
-          }
-          gif_ptr->img_row_offset = 0;
-          gif_ptr->img_row_avail_size = gif_img_row_bytes;
-          ret = img_decoder_ptr->Decode(
-              gif_image_ptr->image_row_buf + gif_ptr->img_row_offset,
-              gif_ptr->img_row_avail_size);
-        }
-        if (ret == 0) {
-          FX_Free(gif_image_ptr->image_row_buf);
-          gif_image_ptr->image_row_buf = NULL;
-          gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
-          gif_error(gif_ptr, "Decode Image Data Error");
-          return 0;
-        }
-      }
-    }
-    gif_save_decoding_status(gif_ptr, GIF_D_STATUS_TAIL);
-  }
-  gif_error(gif_ptr, "Decode Image Data Error");
-  return 0;
-}
-void gif_save_decoding_status(gif_decompress_struct_p gif_ptr, int32_t status) {
-  gif_ptr->decode_status = status;
-  gif_ptr->next_in += gif_ptr->skip_size;
-  gif_ptr->avail_in -= gif_ptr->skip_size;
-  gif_ptr->skip_size = 0;
-}
-uint8_t* gif_read_data(gif_decompress_struct_p gif_ptr,
-                       uint8_t** des_buf_pp,
-                       FX_DWORD data_size) {
-  if (gif_ptr == NULL || gif_ptr->avail_in < gif_ptr->skip_size + data_size) {
-    return NULL;
-  }
-  *des_buf_pp = gif_ptr->next_in + gif_ptr->skip_size;
-  gif_ptr->skip_size += data_size;
-  return *des_buf_pp;
-}
-void gif_input_buffer(gif_decompress_struct_p gif_ptr,
-                      uint8_t* src_buf,
-                      FX_DWORD src_size) {
-  gif_ptr->next_in = src_buf;
-  gif_ptr->avail_in = src_size;
-  gif_ptr->skip_size = 0;
-}
-FX_DWORD gif_get_avail_input(gif_decompress_struct_p gif_ptr,
-                             uint8_t** avial_buf_ptr) {
-  if (avial_buf_ptr) {
-    *avial_buf_ptr = NULL;
-    if (gif_ptr->avail_in > 0) {
-      *avial_buf_ptr = gif_ptr->next_in;
-    }
-  }
-  return gif_ptr->avail_in;
-}
-int32_t gif_get_frame_num(gif_decompress_struct_p gif_ptr) {
-  return gif_ptr->img_ptr_arr_ptr->GetSize();
-}
-static FX_BOOL gif_write_header(gif_compress_struct_p gif_ptr,
-                                uint8_t*& dst_buf,
-                                FX_DWORD& dst_len) {
-  if (gif_ptr->cur_offset) {
-    return TRUE;
-  }
-  dst_len = sizeof(GifHeader) + sizeof(GifLSD) + sizeof(GifGF);
-  dst_buf = FX_TryAlloc(uint8_t, dst_len);
-  if (dst_buf == NULL) {
-    return FALSE;
-  }
-  FXSYS_memset(dst_buf, 0, dst_len);
-  FXSYS_memcpy(dst_buf, gif_ptr->header_ptr, sizeof(GifHeader));
-  gif_ptr->cur_offset += sizeof(GifHeader);
-  SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->lsd_ptr->width);
-  gif_ptr->cur_offset += 2;
-  SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->lsd_ptr->height);
-  gif_ptr->cur_offset += 2;
-  dst_buf[gif_ptr->cur_offset++] = gif_ptr->lsd_ptr->global_flag;
-  dst_buf[gif_ptr->cur_offset++] = gif_ptr->lsd_ptr->bc_index;
-  dst_buf[gif_ptr->cur_offset++] = gif_ptr->lsd_ptr->pixel_aspect;
-  if (gif_ptr->global_pal) {
-    FX_WORD size = sizeof(GifPalette) * gif_ptr->gpal_num;
-    if (!gif_grow_buf(dst_buf, dst_len, gif_ptr->cur_offset + size)) {
-      return FALSE;
-    }
-    FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->global_pal, size);
-    gif_ptr->cur_offset += size;
-  }
-  return TRUE;
-}
-void interlace_buf(const uint8_t* buf, FX_DWORD pitch, FX_DWORD height) {
-  CFX_ArrayTemplate<uint8_t*> pass[4];
-  int i, j;
-  FX_DWORD row;
-  row = 0;
-  uint8_t* temp;
-  while (row < height) {
-    if (row % 8 == 0) {
-      j = 0;
-    } else if (row % 4 == 0) {
-      j = 1;
-    } else if (row % 2 == 0) {
-      j = 2;
-    } else {
-      j = 3;
-    }
-    temp = FX_Alloc(uint8_t, pitch);
-    if (temp == NULL) {
-      return;
-    }
-    FXSYS_memcpy(temp, &buf[pitch * row], pitch);
-    pass[j].Add(temp);
-    row++;
-  }
-  for (i = 0, row = 0; i < 4; i++) {
-    for (j = 0; j < pass[i].GetSize(); j++, row++) {
-      FXSYS_memcpy((uint8_t*)&buf[pitch * row], pass[i].GetAt(j), pitch);
-      FX_Free(pass[i].GetAt(j));
-    }
-  }
-}
-static void gif_write_block_data(const uint8_t* src_buf,
-                                 FX_DWORD src_len,
-                                 uint8_t*& dst_buf,
-                                 FX_DWORD& dst_len,
-                                 FX_DWORD& dst_offset) {
-  FX_DWORD src_offset = 0;
-  while (src_len > GIF_DATA_BLOCK) {
-    dst_buf[dst_offset++] = GIF_DATA_BLOCK;
-    FXSYS_memcpy(&dst_buf[dst_offset], &src_buf[src_offset], GIF_DATA_BLOCK);
-    dst_offset += GIF_DATA_BLOCK;
-    src_offset += GIF_DATA_BLOCK;
-    src_len -= GIF_DATA_BLOCK;
-  }
-  dst_buf[dst_offset++] = (uint8_t)src_len;
-  FXSYS_memcpy(&dst_buf[dst_offset], &src_buf[src_offset], src_len);
-  dst_offset += src_len;
-}
-static FX_BOOL gif_write_data(gif_compress_struct_p gif_ptr,
-                              uint8_t*& dst_buf,
-                              FX_DWORD& dst_len) {
-  if (!gif_grow_buf(dst_buf, dst_len, gif_ptr->cur_offset + GIF_DATA_BLOCK)) {
-    return FALSE;
-  }
-  if (FXSYS_memcmp(gif_ptr->header_ptr->version, "89a", 3) == 0) {
-    dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
-    dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_GCE;
-    gif_ptr->gce_ptr->block_size = 4;
-    dst_buf[gif_ptr->cur_offset++] = gif_ptr->gce_ptr->block_size;
-    gif_ptr->gce_ptr->gce_flag = 0;
-    dst_buf[gif_ptr->cur_offset++] = gif_ptr->gce_ptr->gce_flag;
-    gif_ptr->gce_ptr->delay_time = 10;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                     gif_ptr->gce_ptr->delay_time);
-    gif_ptr->cur_offset += 2;
-    gif_ptr->gce_ptr->trans_index = 0;
-    dst_buf[gif_ptr->cur_offset++] = gif_ptr->gce_ptr->trans_index;
-    dst_buf[gif_ptr->cur_offset++] = 0;
-  }
-  dst_buf[gif_ptr->cur_offset++] = GIF_SIG_IMAGE;
-  SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                   gif_ptr->image_info_ptr->left);
-  gif_ptr->cur_offset += 2;
-  SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->image_info_ptr->top);
-  gif_ptr->cur_offset += 2;
-  SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                   gif_ptr->image_info_ptr->width);
-  gif_ptr->cur_offset += 2;
-  SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                   gif_ptr->image_info_ptr->height);
-  gif_ptr->cur_offset += 2;
-  GifLF& lf = (GifLF&)gif_ptr->image_info_ptr->local_flag;
-  dst_buf[gif_ptr->cur_offset++] = gif_ptr->image_info_ptr->local_flag;
-  if (gif_ptr->local_pal) {
-    FX_DWORD pal_size = sizeof(GifPalette) * gif_ptr->lpal_num;
-    if (!gif_grow_buf(dst_buf, dst_len, pal_size + gif_ptr->cur_offset)) {
-      return FALSE;
-    }
-    FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->local_pal, pal_size);
-    gif_ptr->cur_offset += pal_size;
-  }
-  if (lf.interlace) {
-    interlace_buf(gif_ptr->src_buf, gif_ptr->src_pitch,
-                  gif_ptr->image_info_ptr->height);
-  }
-  uint8_t code_bit = lf.pal_bits;
-  if (lf.local_pal == 0) {
-    GifGF& gf = (GifGF&)gif_ptr->lsd_ptr->global_flag;
-    code_bit = gf.pal_bits;
-  }
-  gif_ptr->img_encoder_ptr->Start(code_bit, gif_ptr->src_buf, dst_buf,
-                                  gif_ptr->cur_offset);
-  FX_DWORD i;
-  for (i = 0; i < gif_ptr->src_row; i++) {
-    if (!gif_ptr->img_encoder_ptr->Encode(
-            &gif_ptr->src_buf[i * gif_ptr->src_pitch],
-            gif_ptr->src_width * (code_bit + 1), dst_buf, dst_len,
-            gif_ptr->cur_offset)) {
-      return FALSE;
-    }
-  }
-  gif_ptr->img_encoder_ptr->Finish(dst_buf, dst_len, gif_ptr->cur_offset);
-  dst_buf[gif_ptr->cur_offset++] = 0;
-  if (FXSYS_memcmp(gif_ptr->header_ptr->version, "89a", 3) == 0 &&
-      gif_ptr->cmt_data_ptr) {
-    dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
-    dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_CE;
-    gif_write_block_data(gif_ptr->cmt_data_ptr, gif_ptr->cmt_data_len, dst_buf,
-                         dst_len, gif_ptr->cur_offset);
-    dst_buf[gif_ptr->cur_offset++] = 0;
-  }
-  if (FXSYS_memcmp(gif_ptr->header_ptr->version, "89a", 3) == 0 &&
-      gif_ptr->pte_data_ptr) {
-    dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
-    dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_PTE;
-    dst_buf[gif_ptr->cur_offset++] = gif_ptr->pte_ptr->block_size;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                     gif_ptr->pte_ptr->grid_left);
-    gif_ptr->cur_offset += 2;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->grid_top);
-    gif_ptr->cur_offset += 2;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                     gif_ptr->pte_ptr->grid_width);
-    gif_ptr->cur_offset += 2;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                     gif_ptr->pte_ptr->grid_height);
-    gif_ptr->cur_offset += 2;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                     gif_ptr->pte_ptr->char_width);
-    gif_ptr->cur_offset += 2;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset,
-                     gif_ptr->pte_ptr->char_height);
-    gif_ptr->cur_offset += 2;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->fc_index);
-    gif_ptr->cur_offset += 2;
-    SetWord_LSBFirst(dst_buf + gif_ptr->cur_offset, gif_ptr->pte_ptr->bc_index);
-    gif_ptr->cur_offset += 2;
-    gif_write_block_data(gif_ptr->pte_data_ptr, gif_ptr->pte_data_len, dst_buf,
-                         dst_len, gif_ptr->cur_offset);
-    gif_ptr->cur_offset += gif_ptr->pte_data_len;
-    dst_buf[gif_ptr->cur_offset++] = 0;
-  }
-  dst_buf[gif_ptr->cur_offset++] = GIF_SIG_TRAILER;
-  return TRUE;
-}
-FX_BOOL gif_encode(gif_compress_struct_p gif_ptr,
-                   uint8_t*& dst_buf,
-                   FX_DWORD& dst_len) {
-  if (!gif_write_header(gif_ptr, dst_buf, dst_len)) {
-    return FALSE;
-  }
-  FX_DWORD cur_offset = gif_ptr->cur_offset;
-  FX_BOOL res = TRUE;
-  if (gif_ptr->frames) {
-    gif_ptr->cur_offset--;
-  }
-  if (!gif_write_data(gif_ptr, dst_buf, dst_len)) {
-    gif_ptr->cur_offset = cur_offset;
-    res = FALSE;
-  }
-  dst_len = gif_ptr->cur_offset;
-  dst_buf[dst_len - 1] = GIF_SIG_TRAILER;
-  if (res) {
-    gif_ptr->frames++;
-  }
-  return res;
-}