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authorDan Sinclair <dsinclair@chromium.org>2016-03-14 13:35:12 -0400
committerDan Sinclair <dsinclair@chromium.org>2016-03-14 13:35:12 -0400
commit764ec513eecbebd12781bcc96ce81ed5e736ee92 (patch)
tree12763fde4be1f10ea1183d92185917b2b587e00b /core/fxcodec/lgif/fx_gif.h
parent97da97662417085774f75c26e535c6fbe70266ae (diff)
downloadpdfium-764ec513eecbebd12781bcc96ce81ed5e736ee92.tar.xz
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 .
Diffstat (limited to 'core/fxcodec/lgif/fx_gif.h')
-rw-r--r--core/fxcodec/lgif/fx_gif.h296
1 files changed, 296 insertions, 0 deletions
diff --git a/core/fxcodec/lgif/fx_gif.h b/core/fxcodec/lgif/fx_gif.h
new file mode 100644
index 0000000000..c44fb7a7cb
--- /dev/null
+++ b/core/fxcodec/lgif/fx_gif.h
@@ -0,0 +1,296 @@
+// 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
+
+#ifndef CORE_FXCODEC_LGIF_FX_GIF_H_
+#define CORE_FXCODEC_LGIF_FX_GIF_H_
+
+#include <setjmp.h>
+
+#include "core/include/fxcrt/fx_basic.h"
+
+#define GIF_SIGNATURE "GIF"
+#define GIF_SIG_EXTENSION 0x21
+#define GIF_SIG_IMAGE 0x2C
+#define GIF_SIG_TRAILER 0x3B
+#define GIF_BLOCK_GCE 0xF9
+#define GIF_BLOCK_PTE 0x01
+#define GIF_BLOCK_CE 0xFE
+#define GIF_BLOCK_AE 0xFF
+#define GIF_BLOCK_TERMINAL 0x00
+#define GIF_MAX_LZW_CODE 4096
+#define GIF_DATA_BLOCK 255
+#define GIF_MAX_ERROR_SIZE 256
+#define GIF_D_STATUS_SIG 0x01
+#define GIF_D_STATUS_TAIL 0x02
+#define GIF_D_STATUS_EXT 0x03
+#define GIF_D_STATUS_EXT_AE 0x04
+#define GIF_D_STATUS_EXT_CE 0x05
+#define GIF_D_STATUS_EXT_GCE 0x06
+#define GIF_D_STATUS_EXT_PTE 0x07
+#define GIF_D_STATUS_EXT_UNE 0x08
+#define GIF_D_STATUS_IMG_INFO 0x09
+#define GIF_D_STATUS_IMG_DATA 0x0A
+#pragma pack(1)
+typedef struct tagGifGF {
+ uint8_t pal_bits : 3;
+ uint8_t sort_flag : 1;
+ uint8_t color_resolution : 3;
+ uint8_t global_pal : 1;
+} GifGF;
+typedef struct tagGifLF {
+ uint8_t pal_bits : 3;
+ uint8_t reserved : 2;
+ uint8_t sort_flag : 1;
+ uint8_t interlace : 1;
+ uint8_t local_pal : 1;
+} GifLF;
+typedef struct tagGifHeader {
+ char signature[3];
+ char version[3];
+} GifHeader;
+typedef struct tagGifLSD {
+ FX_WORD width;
+ FX_WORD height;
+ uint8_t global_flag;
+ uint8_t bc_index;
+ uint8_t pixel_aspect;
+} GifLSD;
+typedef struct tagGifImageInfo {
+ FX_WORD left;
+ FX_WORD top;
+ FX_WORD width;
+ FX_WORD height;
+
+ uint8_t local_flag;
+} GifImageInfo;
+typedef struct tagGifCEF {
+ uint8_t transparency : 1;
+ uint8_t user_input : 1;
+ uint8_t disposal_method : 3;
+ uint8_t reserved : 3;
+} GifCEF;
+typedef struct tagGifGCE {
+ uint8_t block_size;
+ uint8_t gce_flag;
+ FX_WORD delay_time;
+ uint8_t trans_index;
+} GifGCE;
+typedef struct tagGifPTE {
+ uint8_t block_size;
+ FX_WORD grid_left;
+ FX_WORD grid_top;
+ FX_WORD grid_width;
+ FX_WORD grid_height;
+
+ uint8_t char_width;
+ uint8_t char_height;
+
+ uint8_t fc_index;
+ uint8_t bc_index;
+} GifPTE;
+typedef struct tagGifAE {
+ uint8_t block_size;
+ uint8_t app_identify[8];
+ uint8_t app_authentication[3];
+} GifAE;
+typedef struct tagGifPalette { uint8_t r, g, b; } GifPalette;
+#pragma pack()
+typedef struct tagGifImage {
+ GifGCE* image_gce_ptr;
+ GifPalette* local_pal_ptr;
+ GifImageInfo* image_info_ptr;
+ uint8_t image_code_size;
+ FX_DWORD image_data_pos;
+ uint8_t* image_row_buf;
+ int32_t image_row_num;
+} GifImage;
+typedef struct tagGifPlainText {
+ GifGCE* gce_ptr;
+ GifPTE* pte_ptr;
+ CFX_ByteString* string_ptr;
+} GifPlainText;
+class CGifLZWDecoder {
+ public:
+ struct tag_Table {
+ FX_WORD prefix;
+ uint8_t suffix;
+ };
+ CGifLZWDecoder(FX_CHAR* error_ptr = NULL) { err_msg_ptr = error_ptr; }
+ void InitTable(uint8_t code_len);
+
+ int32_t Decode(uint8_t* des_buf, FX_DWORD& des_size);
+
+ void Input(uint8_t* src_buf, FX_DWORD src_size);
+ FX_DWORD GetAvailInput();
+
+ private:
+ void ClearTable();
+ void AddCode(FX_WORD prefix_code, uint8_t append_char);
+ void DecodeString(FX_WORD code);
+ uint8_t code_size;
+ uint8_t code_size_cur;
+ FX_WORD code_clear;
+ FX_WORD code_end;
+ FX_WORD code_next;
+ uint8_t code_first;
+ uint8_t stack[GIF_MAX_LZW_CODE];
+ FX_WORD stack_size;
+ tag_Table code_table[GIF_MAX_LZW_CODE];
+ FX_WORD code_old;
+
+ uint8_t* next_in;
+ FX_DWORD avail_in;
+
+ uint8_t bits_left;
+ FX_DWORD code_store;
+
+ FX_CHAR* err_msg_ptr;
+};
+class CGifLZWEncoder {
+ public:
+ struct tag_Table {
+ FX_WORD prefix;
+ uint8_t suffix;
+ };
+ CGifLZWEncoder();
+ ~CGifLZWEncoder();
+ void Start(uint8_t code_len,
+ const uint8_t* src_buf,
+ uint8_t*& dst_buf,
+ FX_DWORD& offset);
+ FX_BOOL Encode(const uint8_t* src_buf,
+ FX_DWORD src_len,
+ uint8_t*& dst_buf,
+ FX_DWORD& dst_len,
+ FX_DWORD& offset);
+ void Finish(uint8_t*& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset);
+
+ private:
+ void ClearTable();
+ FX_BOOL LookUpInTable(const uint8_t* buf,
+ FX_DWORD& offset,
+ uint8_t& bit_offset);
+ void EncodeString(FX_DWORD index,
+ uint8_t*& dst_buf,
+ FX_DWORD& dst_len,
+ FX_DWORD& offset);
+ void WriteBlock(uint8_t*& dst_buf, FX_DWORD& dst_len, FX_DWORD& offset);
+ jmp_buf jmp;
+ FX_DWORD src_offset;
+ uint8_t src_bit_offset;
+ uint8_t src_bit_cut;
+ FX_DWORD src_bit_num;
+ uint8_t code_size;
+ FX_WORD code_clear;
+ FX_WORD code_end;
+ FX_WORD 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];
+ FX_WORD 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;
+static const int32_t s_gif_interlace_step[4] = {8, 8, 4, 2};
+struct tag_gif_decompress_struct {
+ jmp_buf jmpbuf;
+ FX_CHAR* err_ptr;
+ void (*gif_error_fn)(gif_decompress_struct_p gif_ptr, const FX_CHAR* err_msg);
+ void* context_ptr;
+ int width;
+ int height;
+ GifPalette* global_pal_ptr;
+ int32_t global_pal_num;
+ uint8_t global_sort_flag;
+ uint8_t global_color_resolution;
+
+ uint8_t bc_index;
+ uint8_t pixel_aspect;
+ CGifLZWDecoder* img_decoder_ptr;
+ FX_DWORD img_row_offset;
+ FX_DWORD img_row_avail_size;
+ uint8_t img_pass_num;
+ CFX_ArrayTemplate<GifImage*>* img_ptr_arr_ptr;
+ uint8_t* (*gif_ask_buf_for_pal_fn)(gif_decompress_struct_p gif_ptr,
+ int32_t pal_size);
+ uint8_t* next_in;
+ FX_DWORD avail_in;
+ int32_t decode_status;
+ FX_DWORD skip_size;
+ void (*gif_record_current_position_fn)(gif_decompress_struct_p gif_ptr,
+ FX_DWORD* cur_pos_ptr);
+ void (*gif_get_row_fn)(gif_decompress_struct_p gif_ptr,
+ int32_t row_num,
+ uint8_t* row_buf);
+ FX_BOOL (*gif_get_record_position_fn)(gif_decompress_struct_p gif_ptr,
+ FX_DWORD cur_pos,
+ int32_t left, int32_t top, int32_t width, int32_t height,
+ int32_t pal_num, void* pal_ptr,
+ int32_t delay_time, FX_BOOL user_input,
+ int32_t trans_index, int32_t disposal_method, FX_BOOL interlace);
+ CFX_ByteString* cmt_data_ptr;
+ GifGCE* gce_ptr;
+ CFX_ArrayTemplate<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;
+ FX_DWORD src_pitch;
+ FX_DWORD src_width;
+ FX_DWORD src_row;
+ FX_DWORD cur_offset;
+ FX_DWORD frames;
+ GifHeader* header_ptr;
+ GifLSD* lsd_ptr;
+ GifPalette* global_pal;
+ FX_WORD gpal_num;
+ GifPalette* local_pal;
+ FX_WORD lpal_num;
+ GifImageInfo* image_info_ptr;
+ CGifLZWEncoder* img_encoder_ptr;
+
+ uint8_t* cmt_data_ptr;
+ FX_DWORD cmt_data_len;
+ GifGCE* gce_ptr;
+ GifPTE* pte_ptr;
+ const uint8_t* pte_data_ptr;
+ FX_DWORD pte_data_len;
+};
+
+void gif_error(gif_decompress_struct_p gif_ptr, const FX_CHAR* err_msg);
+void gif_warn(gif_decompress_struct_p gif_ptr, const FX_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,
+ FX_DWORD data_size);
+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,
+ FX_DWORD src_size);
+FX_DWORD gif_get_avail_input(gif_decompress_struct_p gif_ptr,
+ uint8_t** avial_buf_ptr);
+void interlace_buf(const uint8_t* buf, FX_DWORD width, FX_DWORD height);
+FX_BOOL gif_encode(gif_compress_struct_p gif_ptr,
+ uint8_t*& dst_buf,
+ FX_DWORD& dst_len);
+
+#endif // CORE_FXCODEC_LGIF_FX_GIF_H_