Fix some nits in fx_gif.cpp

Change-Id: I7d2d731b8b18d315b5587e1d0d9737c08cbcdead
Reviewed-on: https://pdfium-review.googlesource.com/4710
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 1 insertions, 92 deletions

diff --git a/core/fxcodec/lgif/fx_gif.h b/core/fxcodec/lgif/fx_gif.h
index 5027c447d5..a77a8a3065 100644
--- a/core/fxcodec/lgif/fx_gif.h
+++ b/core/fxcodec/lgif/fx_gif.h
@@ -126,7 +126,7 @@ class CGifLZWDecoder {
   ~CGifLZWDecoder();
 
   void InitTable(uint8_t code_len);
-  int32_t Decode(uint8_t* des_buf, uint32_t& des_size);
+  int32_t Decode(uint8_t* des_buf, uint32_t* des_size);
   void Input(uint8_t* src_buf, uint32_t src_size);
   uint32_t GetAvailInput();
 
@@ -155,53 +155,6 @@ class CGifLZWDecoder {
   char* err_msg_ptr;
 };
 
-class CGifLZWEncoder {
- public:
-  struct tag_Table {
-    uint16_t prefix;
-    uint8_t suffix;
-  };
-
-  CGifLZWEncoder();
-  ~CGifLZWEncoder();
-
-  void Start(uint8_t code_len,
-             const uint8_t* src_buf,
-             uint8_t*& dst_buf,
-             uint32_t& offset);
-  bool Encode(const uint8_t* src_buf,
-              uint32_t src_len,
-              uint8_t*& dst_buf,
-              uint32_t& dst_len,
-              uint32_t& offset);
-  void Finish(uint8_t*& dst_buf, uint32_t& dst_len, uint32_t& offset);
-
- private:
-  void ClearTable();
-  bool LookUpInTable(const uint8_t* buf, uint32_t& offset, uint8_t& bit_offset);
-  void EncodeString(uint32_t index,
-                    uint8_t*& dst_buf,
-                    uint32_t& dst_len,
-                    uint32_t& offset);
-  void WriteBlock(uint8_t*& dst_buf, uint32_t& dst_len, uint32_t& offset);
-
-  jmp_buf jmp;
-  uint32_t src_offset;
-  uint8_t src_bit_offset;
-  uint8_t src_bit_cut;
-  uint32_t src_bit_num;
-  uint8_t code_size;
-  uint16_t code_clear;
-  uint16_t code_end;
-  uint16_t index_num;
-  uint8_t bit_offset;
-  uint8_t index_bit_cur;
-  uint8_t index_buf[GIF_DATA_BLOCK];
-  uint8_t index_buf_len;
-  tag_Table code_table[GIF_MAX_LZW_CODE];
-  uint16_t table_cur;
-};
-
 typedef struct tag_gif_decompress_struct gif_decompress_struct;
 typedef gif_decompress_struct* gif_decompress_struct_p;
 typedef gif_decompress_struct_p* gif_decompress_struct_pp;
@@ -253,61 +206,17 @@ struct tag_gif_decompress_struct {
   GifGCE* gce_ptr;
   std::vector<GifPlainText*>* pt_ptr_arr_ptr;
 };
-typedef struct tag_gif_compress_struct gif_compress_struct;
-typedef gif_compress_struct* gif_compress_struct_p;
-typedef gif_compress_struct_p* gif_compress_struct_pp;
-struct tag_gif_compress_struct {
-  const uint8_t* src_buf;
-  uint32_t src_pitch;
-  uint32_t src_width;
-  uint32_t src_row;
-  uint32_t cur_offset;
-  uint32_t frames;
-  GifHeader* header_ptr;
-  GifLSD* lsd_ptr;
-  GifPalette* global_pal;
-  uint16_t gpal_num;
-  GifPalette* local_pal;
-  uint16_t lpal_num;
-  GifImageInfo* image_info_ptr;
-  CGifLZWEncoder* img_encoder_ptr;
-
-  uint8_t* cmt_data_ptr;
-  uint32_t cmt_data_len;
-  GifGCE* gce_ptr;
-  GifPTE* pte_ptr;
-  const uint8_t* pte_data_ptr;
-  uint32_t pte_data_len;
-};
 
-void gif_error(gif_decompress_struct_p gif_ptr, const char* err_msg);
-void gif_warn(gif_decompress_struct_p gif_ptr, const char* err_msg);
 gif_decompress_struct_p gif_create_decompress();
 void gif_destroy_decompress(gif_decompress_struct_pp gif_ptr_ptr);
-gif_compress_struct_p gif_create_compress();
-void gif_destroy_compress(gif_compress_struct_pp gif_ptr_ptr);
 int32_t gif_read_header(gif_decompress_struct_p gif_ptr);
 int32_t gif_get_frame(gif_decompress_struct_p gif_ptr);
 int32_t gif_get_frame_num(gif_decompress_struct_p gif_ptr);
-int32_t gif_decode_extension(gif_decompress_struct_p gif_ptr);
-int32_t gif_decode_image_info(gif_decompress_struct_p gif_ptr);
-void gif_takeover_gce_ptr(gif_decompress_struct_p gif_ptr,
-                          GifGCE** gce_ptr_ptr);
 int32_t gif_load_frame(gif_decompress_struct_p gif_ptr, int32_t frame_num);
-uint8_t* gif_read_data(gif_decompress_struct_p gif_ptr,
-                       uint8_t** des_buf_pp,
-                       uint32_t data_size);
-void gif_decoding_failure_at_tail_cleanup(gif_decompress_struct_p gif_ptr,
-                                          GifImage* gif_image_ptr);
-void gif_save_decoding_status(gif_decompress_struct_p gif_ptr, int32_t status);
 void gif_input_buffer(gif_decompress_struct_p gif_ptr,
                       uint8_t* src_buf,
                       uint32_t src_size);
 uint32_t gif_get_avail_input(gif_decompress_struct_p gif_ptr,
                              uint8_t** avail_buf_ptr);
-void interlace_buf(const uint8_t* buf, uint32_t width, uint32_t height);
-bool gif_encode(gif_compress_struct_p gif_ptr,
-                uint8_t*& dst_buf,
-                uint32_t& dst_len);
 
 #endif  // CORE_FXCODEC_LGIF_FX_GIF_H_