| Index: core/src/fxcodec/lgif/fx_gif.cpp
|
| diff --git a/core/src/fxcodec/lgif/fx_gif.cpp b/core/src/fxcodec/lgif/fx_gif.cpp
|
| index b07ebb3bc9bdab3cb8d99f2f623032f9cf2f0aad..c00b7a74b26629d2584288b2413eec6512e1a3c4 100644
|
| --- a/core/src/fxcodec/lgif/fx_gif.cpp
|
| +++ b/core/src/fxcodec/lgif/fx_gif.cpp
|
| @@ -1,1426 +1,1426 @@
|
| -// 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 "fx_gif.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*>;
|
| -#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| - gif_ptr->cmt_data_ptr = new CFX_ByteString;
|
| -#endif
|
| -#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - gif_ptr->pt_ptr_arr_ptr = new CFX_ArrayTemplate<GifPlainText*>;
|
| -#endif
|
| - 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;
|
| - if (gif_ptr->global_pal_ptr != NULL) {
|
| - FX_Free(gif_ptr->global_pal_ptr);
|
| - }
|
| - if (gif_ptr->img_decoder_ptr != NULL) {
|
| - delete gif_ptr->img_decoder_ptr;
|
| - }
|
| - if (gif_ptr->img_ptr_arr_ptr != NULL) {
|
| - 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);
|
| - if (p->image_info_ptr != NULL) {
|
| - FX_Free(p->image_info_ptr);
|
| - }
|
| - if (p->image_gce_ptr != NULL) {
|
| - FX_Free(p->image_gce_ptr);
|
| - }
|
| - if (p->image_row_buf != NULL) {
|
| - FX_Free(p->image_row_buf);
|
| - }
|
| - if (p->local_pal_ptr != NULL &&
|
| - 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;
|
| - }
|
| -#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| - if (gif_ptr->app_data != NULL) {
|
| - FX_Free(gif_ptr->app_data);
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| - if (gif_ptr->cmt_data_ptr != NULL) {
|
| - delete gif_ptr->cmt_data_ptr;
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - if (gif_ptr->gce_ptr != NULL) {
|
| - FX_Free(gif_ptr->gce_ptr);
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - if (gif_ptr->pt_ptr_arr_ptr != NULL) {
|
| - 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);
|
| - if (p->gce_ptr != NULL) {
|
| - FX_Free(p->gce_ptr);
|
| - }
|
| - if (p->pte_ptr != NULL) {
|
| - FX_Free(p->pte_ptr);
|
| - }
|
| - if (p->string_ptr != NULL) {
|
| - delete p->string_ptr;
|
| - }
|
| - }
|
| - gif_ptr->pt_ptr_arr_ptr->RemoveAll();
|
| - delete gif_ptr->pt_ptr_arr_ptr;
|
| - }
|
| -#endif
|
| - 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));
|
| -#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| - FXSYS_memcpy(gif_ptr->app_identify, "netscape", 8);
|
| - FXSYS_memcpy(gif_ptr->app_authentication, "2.0", 3);
|
| -#endif
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - 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;
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - 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;
|
| -#endif
|
| - 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;
|
| - if (gif_ptr->header_ptr != NULL) {
|
| - FX_Free(gif_ptr->header_ptr);
|
| - }
|
| - if (gif_ptr->lsd_ptr != NULL) {
|
| - FX_Free(gif_ptr->lsd_ptr);
|
| - }
|
| - if (gif_ptr->global_pal != NULL) {
|
| - FX_Free(gif_ptr->global_pal);
|
| - }
|
| - if (gif_ptr->image_info_ptr != NULL) {
|
| - FX_Free(gif_ptr->image_info_ptr);
|
| - }
|
| - if (gif_ptr->local_pal != NULL) {
|
| - FX_Free(gif_ptr->local_pal);
|
| - }
|
| - if (gif_ptr->img_encoder_ptr != NULL) {
|
| - delete gif_ptr->img_encoder_ptr;
|
| - }
|
| -#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| - if (gif_ptr->app_data != NULL) {
|
| - FX_Free(gif_ptr->app_data);
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - if (gif_ptr->gce_ptr != NULL) {
|
| - FX_Free(gif_ptr->gce_ptr);
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| - if (gif_ptr->cmt_data_ptr != NULL) {
|
| - FX_Free(gif_ptr->cmt_data_ptr);
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - if (gif_ptr->pte_ptr != NULL) {
|
| - FX_Free(gif_ptr->pte_ptr);
|
| - }
|
| -#endif
|
| - FX_Free(gif_ptr);
|
| -}
|
| -void _gif_error(gif_decompress_struct_p gif_ptr, const FX_CHAR* err_msg) {
|
| - if (gif_ptr != NULL && gif_ptr->_gif_error_fn != NULL) {
|
| - 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;
|
| - if (gif_ptr->global_pal_ptr != NULL) {
|
| - FX_Free(gif_ptr->global_pal_ptr);
|
| - }
|
| - gif_ptr->global_pal_ptr = NULL;
|
| - gif_ptr->global_pal_ptr = (GifPalette*)FX_Alloc(uint8_t, global_pal_size);
|
| - GIF_PTR_NOT_NULL(gif_ptr->global_pal_ptr, gif_ptr);
|
| - 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) {
|
| -#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| - case GIF_BLOCK_AE:
|
| - _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_AE);
|
| - continue;
|
| -#endif
|
| -#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| - case GIF_BLOCK_CE:
|
| - _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_CE);
|
| - continue;
|
| -#endif
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - case GIF_BLOCK_GCE:
|
| - _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_GCE);
|
| - continue;
|
| -#endif
|
| -#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - case GIF_BLOCK_PTE:
|
| - _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_PTE);
|
| - continue;
|
| -#endif
|
| - default: {
|
| - int32_t status = GIF_D_STATUS_EXT_UNE;
|
| -#ifndef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - if (*ext_ptr == GIF_BLOCK_PTE) {
|
| - status = GIF_D_STATUS_EXT_PTE;
|
| - }
|
| -#endif
|
| - _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;
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - if (gif_ptr->gce_ptr != NULL && gce_ptr_ptr != NULL) {
|
| - *gce_ptr_ptr = gif_ptr->gce_ptr;
|
| - gif_ptr->gce_ptr = NULL;
|
| - }
|
| -#endif
|
| -}
|
| -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) {
|
| -#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| - case GIF_D_STATUS_EXT_AE: {
|
| - ASSERT(sizeof(GifAE) == 12);
|
| - GifAE* gif_ae_ptr = NULL;
|
| - if (_gif_read_data(gif_ptr, (uint8_t**)&gif_ae_ptr, 12) == NULL) {
|
| - return 2;
|
| - }
|
| - CFX_ByteString gif_ae_data_str;
|
| - if (_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
|
| - gif_ptr->skip_size = skip_size_org;
|
| - 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;
|
| - return 2;
|
| - }
|
| - gif_ae_data_str += CFX_ByteString((const uint8_t*)data_ptr, data_size);
|
| - }
|
| - FXSYS_memcpy(gif_ptr->app_identify, gif_ae_ptr->app_identify, 8);
|
| - FXSYS_memcpy(gif_ptr->app_authentication, gif_ae_ptr->app_authentication,
|
| - 3);
|
| - gif_ptr->app_data_size = gif_ae_data_str.GetLength();
|
| - if (gif_ptr->app_data != NULL) {
|
| - FX_Free(gif_ptr->app_data);
|
| - gif_ptr->app_data = NULL;
|
| - }
|
| - gif_ptr->app_data = FX_Alloc(uint8_t, gif_ptr->app_data_size);
|
| - GIF_PTR_NOT_NULL(gif_ptr->app_data, gif_ptr);
|
| - FXSYS_memcpy(gif_ptr->app_data, const uint8_t*(gif_ae_data_str),
|
| - gif_ptr->app_data_size);
|
| - } break;
|
| -#endif
|
| -#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| - 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;
|
| -#endif
|
| -#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - 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);
|
| - GIF_PTR_NOT_NULL(gif_pt_ptr, gif_ptr);
|
| - 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_PTR_NOT_NULL(gif_pt_ptr->pte_ptr, gif_ptr);
|
| - gif_pt_ptr->string_ptr = new CFX_ByteString;
|
| - GIF_PTR_NOT_NULL(gif_pt_ptr->string_ptr, gif_ptr);
|
| - 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 != NULL) {
|
| - if (gif_pt_ptr->gce_ptr != NULL) {
|
| - FX_Free(gif_pt_ptr->gce_ptr);
|
| - }
|
| - if (gif_pt_ptr->pte_ptr != NULL) {
|
| - FX_Free(gif_pt_ptr->pte_ptr);
|
| - }
|
| - if (gif_pt_ptr->string_ptr != NULL) {
|
| - 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 != NULL) {
|
| - if (gif_pt_ptr->gce_ptr != NULL) {
|
| - FX_Free(gif_pt_ptr->gce_ptr);
|
| - }
|
| - if (gif_pt_ptr->pte_ptr != NULL) {
|
| - FX_Free(gif_pt_ptr->pte_ptr);
|
| - }
|
| - if (gif_pt_ptr->string_ptr != NULL) {
|
| - 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;
|
| -#endif
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - 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_NOT_NULL(gif_ptr->gce_ptr, gif_ptr);
|
| - }
|
| - 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;
|
| -#endif
|
| - default: {
|
| -#ifndef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - if (gif_ptr->decode_status == GIF_D_STATUS_EXT_PTE) {
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - if (gif_ptr->gce_ptr != NULL) {
|
| - FX_Free(gif_ptr->gce_ptr);
|
| - gif_ptr->gce_ptr = NULL;
|
| - }
|
| -#endif
|
| - }
|
| -#endif
|
| - 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));
|
| - GIF_PTR_NOT_NULL(gif_image_ptr, gif_ptr);
|
| - FXSYS_memset(gif_image_ptr, 0, sizeof(GifImage));
|
| - gif_image_ptr->image_info_ptr =
|
| - (GifImageInfo*)FX_Alloc(uint8_t, sizeof(GifImageInfo));
|
| - GIF_PTR_NOT_NULL(gif_image_ptr->image_info_ptr, gif_ptr);
|
| - 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) {
|
| - if (gif_image_ptr->image_info_ptr != NULL) {
|
| - FX_Free(gif_image_ptr->image_info_ptr);
|
| - }
|
| - if (gif_image_ptr->image_row_buf != NULL) {
|
| - 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;
|
| - if (gif_image_ptr->image_info_ptr != NULL) {
|
| - FX_Free(gif_image_ptr->image_info_ptr);
|
| - }
|
| - if (gif_image_ptr->image_row_buf != NULL) {
|
| - 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 != NULL) {
|
| - 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;
|
| - if (gif_image_ptr->image_info_ptr != NULL) {
|
| - FX_Free(gif_image_ptr->image_info_ptr);
|
| - }
|
| - if (gif_image_ptr->local_pal_ptr != NULL) {
|
| - FX_Free(gif_image_ptr->local_pal_ptr);
|
| - }
|
| - if (gif_image_ptr->image_row_buf != NULL) {
|
| - 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);
|
| - GIF_PTR_NOT_NULL(gif_image_ptr->image_row_buf, gif_ptr);
|
| - 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_NOT_NULL(gif_ptr->img_decoder_ptr, gif_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 != NULL) {
|
| - *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;
|
| - }
|
| -#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| - 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;
|
| - }
|
| -#endif
|
| - 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;
|
| -#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| - 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;
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| - 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;
|
| - }
|
| -#endif
|
| -#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| - if (FXSYS_memcmp(gif_ptr->header_ptr->version, "89a", 3) == 0 &&
|
| - gif_ptr->app_data) {
|
| - dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
|
| - dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_AE;
|
| - dst_buf[gif_ptr->cur_offset++] = 11;
|
| - FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_identify, 8);
|
| - gif_ptr->cur_offset += 8;
|
| - FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_authentication, 8);
|
| - gif_ptr->cur_offset += 3;
|
| - FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_data,
|
| - gif_ptr->app_data_size);
|
| - gif_ptr->cur_offset += gif_ptr->app_data_size;
|
| - dst_buf[gif_ptr->cur_offset++] = 0;
|
| - }
|
| -#endif
|
| - 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;
|
| -}
|
| +// 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 "fx_gif.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*>;
|
| +#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| + gif_ptr->cmt_data_ptr = new CFX_ByteString;
|
| +#endif
|
| +#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + gif_ptr->pt_ptr_arr_ptr = new CFX_ArrayTemplate<GifPlainText*>;
|
| +#endif
|
| + 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;
|
| + if (gif_ptr->global_pal_ptr != NULL) {
|
| + FX_Free(gif_ptr->global_pal_ptr);
|
| + }
|
| + if (gif_ptr->img_decoder_ptr != NULL) {
|
| + delete gif_ptr->img_decoder_ptr;
|
| + }
|
| + if (gif_ptr->img_ptr_arr_ptr != NULL) {
|
| + 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);
|
| + if (p->image_info_ptr != NULL) {
|
| + FX_Free(p->image_info_ptr);
|
| + }
|
| + if (p->image_gce_ptr != NULL) {
|
| + FX_Free(p->image_gce_ptr);
|
| + }
|
| + if (p->image_row_buf != NULL) {
|
| + FX_Free(p->image_row_buf);
|
| + }
|
| + if (p->local_pal_ptr != NULL &&
|
| + 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;
|
| + }
|
| +#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| + if (gif_ptr->app_data != NULL) {
|
| + FX_Free(gif_ptr->app_data);
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| + if (gif_ptr->cmt_data_ptr != NULL) {
|
| + delete gif_ptr->cmt_data_ptr;
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + if (gif_ptr->gce_ptr != NULL) {
|
| + FX_Free(gif_ptr->gce_ptr);
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + if (gif_ptr->pt_ptr_arr_ptr != NULL) {
|
| + 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);
|
| + if (p->gce_ptr != NULL) {
|
| + FX_Free(p->gce_ptr);
|
| + }
|
| + if (p->pte_ptr != NULL) {
|
| + FX_Free(p->pte_ptr);
|
| + }
|
| + if (p->string_ptr != NULL) {
|
| + delete p->string_ptr;
|
| + }
|
| + }
|
| + gif_ptr->pt_ptr_arr_ptr->RemoveAll();
|
| + delete gif_ptr->pt_ptr_arr_ptr;
|
| + }
|
| +#endif
|
| + 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));
|
| +#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| + FXSYS_memcpy(gif_ptr->app_identify, "netscape", 8);
|
| + FXSYS_memcpy(gif_ptr->app_authentication, "2.0", 3);
|
| +#endif
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + 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;
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + 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;
|
| +#endif
|
| + 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;
|
| + if (gif_ptr->header_ptr != NULL) {
|
| + FX_Free(gif_ptr->header_ptr);
|
| + }
|
| + if (gif_ptr->lsd_ptr != NULL) {
|
| + FX_Free(gif_ptr->lsd_ptr);
|
| + }
|
| + if (gif_ptr->global_pal != NULL) {
|
| + FX_Free(gif_ptr->global_pal);
|
| + }
|
| + if (gif_ptr->image_info_ptr != NULL) {
|
| + FX_Free(gif_ptr->image_info_ptr);
|
| + }
|
| + if (gif_ptr->local_pal != NULL) {
|
| + FX_Free(gif_ptr->local_pal);
|
| + }
|
| + if (gif_ptr->img_encoder_ptr != NULL) {
|
| + delete gif_ptr->img_encoder_ptr;
|
| + }
|
| +#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| + if (gif_ptr->app_data != NULL) {
|
| + FX_Free(gif_ptr->app_data);
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + if (gif_ptr->gce_ptr != NULL) {
|
| + FX_Free(gif_ptr->gce_ptr);
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| + if (gif_ptr->cmt_data_ptr != NULL) {
|
| + FX_Free(gif_ptr->cmt_data_ptr);
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + if (gif_ptr->pte_ptr != NULL) {
|
| + FX_Free(gif_ptr->pte_ptr);
|
| + }
|
| +#endif
|
| + FX_Free(gif_ptr);
|
| +}
|
| +void _gif_error(gif_decompress_struct_p gif_ptr, const FX_CHAR* err_msg) {
|
| + if (gif_ptr != NULL && gif_ptr->_gif_error_fn != NULL) {
|
| + 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;
|
| + if (gif_ptr->global_pal_ptr != NULL) {
|
| + FX_Free(gif_ptr->global_pal_ptr);
|
| + }
|
| + gif_ptr->global_pal_ptr = NULL;
|
| + gif_ptr->global_pal_ptr = (GifPalette*)FX_Alloc(uint8_t, global_pal_size);
|
| + GIF_PTR_NOT_NULL(gif_ptr->global_pal_ptr, gif_ptr);
|
| + 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) {
|
| +#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| + case GIF_BLOCK_AE:
|
| + _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_AE);
|
| + continue;
|
| +#endif
|
| +#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| + case GIF_BLOCK_CE:
|
| + _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_CE);
|
| + continue;
|
| +#endif
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + case GIF_BLOCK_GCE:
|
| + _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_GCE);
|
| + continue;
|
| +#endif
|
| +#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + case GIF_BLOCK_PTE:
|
| + _gif_save_decoding_status(gif_ptr, GIF_D_STATUS_EXT_PTE);
|
| + continue;
|
| +#endif
|
| + default: {
|
| + int32_t status = GIF_D_STATUS_EXT_UNE;
|
| +#ifndef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + if (*ext_ptr == GIF_BLOCK_PTE) {
|
| + status = GIF_D_STATUS_EXT_PTE;
|
| + }
|
| +#endif
|
| + _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;
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + if (gif_ptr->gce_ptr != NULL && gce_ptr_ptr != NULL) {
|
| + *gce_ptr_ptr = gif_ptr->gce_ptr;
|
| + gif_ptr->gce_ptr = NULL;
|
| + }
|
| +#endif
|
| +}
|
| +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) {
|
| +#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| + case GIF_D_STATUS_EXT_AE: {
|
| + ASSERT(sizeof(GifAE) == 12);
|
| + GifAE* gif_ae_ptr = NULL;
|
| + if (_gif_read_data(gif_ptr, (uint8_t**)&gif_ae_ptr, 12) == NULL) {
|
| + return 2;
|
| + }
|
| + CFX_ByteString gif_ae_data_str;
|
| + if (_gif_read_data(gif_ptr, &data_size_ptr, 1) == NULL) {
|
| + gif_ptr->skip_size = skip_size_org;
|
| + 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;
|
| + return 2;
|
| + }
|
| + gif_ae_data_str += CFX_ByteString((const uint8_t*)data_ptr, data_size);
|
| + }
|
| + FXSYS_memcpy(gif_ptr->app_identify, gif_ae_ptr->app_identify, 8);
|
| + FXSYS_memcpy(gif_ptr->app_authentication, gif_ae_ptr->app_authentication,
|
| + 3);
|
| + gif_ptr->app_data_size = gif_ae_data_str.GetLength();
|
| + if (gif_ptr->app_data != NULL) {
|
| + FX_Free(gif_ptr->app_data);
|
| + gif_ptr->app_data = NULL;
|
| + }
|
| + gif_ptr->app_data = FX_Alloc(uint8_t, gif_ptr->app_data_size);
|
| + GIF_PTR_NOT_NULL(gif_ptr->app_data, gif_ptr);
|
| + FXSYS_memcpy(gif_ptr->app_data, const uint8_t*(gif_ae_data_str),
|
| + gif_ptr->app_data_size);
|
| + } break;
|
| +#endif
|
| +#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| + 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;
|
| +#endif
|
| +#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + 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);
|
| + GIF_PTR_NOT_NULL(gif_pt_ptr, gif_ptr);
|
| + 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_PTR_NOT_NULL(gif_pt_ptr->pte_ptr, gif_ptr);
|
| + gif_pt_ptr->string_ptr = new CFX_ByteString;
|
| + GIF_PTR_NOT_NULL(gif_pt_ptr->string_ptr, gif_ptr);
|
| + 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 != NULL) {
|
| + if (gif_pt_ptr->gce_ptr != NULL) {
|
| + FX_Free(gif_pt_ptr->gce_ptr);
|
| + }
|
| + if (gif_pt_ptr->pte_ptr != NULL) {
|
| + FX_Free(gif_pt_ptr->pte_ptr);
|
| + }
|
| + if (gif_pt_ptr->string_ptr != NULL) {
|
| + 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 != NULL) {
|
| + if (gif_pt_ptr->gce_ptr != NULL) {
|
| + FX_Free(gif_pt_ptr->gce_ptr);
|
| + }
|
| + if (gif_pt_ptr->pte_ptr != NULL) {
|
| + FX_Free(gif_pt_ptr->pte_ptr);
|
| + }
|
| + if (gif_pt_ptr->string_ptr != NULL) {
|
| + 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;
|
| +#endif
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + 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_NOT_NULL(gif_ptr->gce_ptr, gif_ptr);
|
| + }
|
| + 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;
|
| +#endif
|
| + default: {
|
| +#ifndef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + if (gif_ptr->decode_status == GIF_D_STATUS_EXT_PTE) {
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + if (gif_ptr->gce_ptr != NULL) {
|
| + FX_Free(gif_ptr->gce_ptr);
|
| + gif_ptr->gce_ptr = NULL;
|
| + }
|
| +#endif
|
| + }
|
| +#endif
|
| + 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));
|
| + GIF_PTR_NOT_NULL(gif_image_ptr, gif_ptr);
|
| + FXSYS_memset(gif_image_ptr, 0, sizeof(GifImage));
|
| + gif_image_ptr->image_info_ptr =
|
| + (GifImageInfo*)FX_Alloc(uint8_t, sizeof(GifImageInfo));
|
| + GIF_PTR_NOT_NULL(gif_image_ptr->image_info_ptr, gif_ptr);
|
| + 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) {
|
| + if (gif_image_ptr->image_info_ptr != NULL) {
|
| + FX_Free(gif_image_ptr->image_info_ptr);
|
| + }
|
| + if (gif_image_ptr->image_row_buf != NULL) {
|
| + 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;
|
| + if (gif_image_ptr->image_info_ptr != NULL) {
|
| + FX_Free(gif_image_ptr->image_info_ptr);
|
| + }
|
| + if (gif_image_ptr->image_row_buf != NULL) {
|
| + 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 != NULL) {
|
| + 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;
|
| + if (gif_image_ptr->image_info_ptr != NULL) {
|
| + FX_Free(gif_image_ptr->image_info_ptr);
|
| + }
|
| + if (gif_image_ptr->local_pal_ptr != NULL) {
|
| + FX_Free(gif_image_ptr->local_pal_ptr);
|
| + }
|
| + if (gif_image_ptr->image_row_buf != NULL) {
|
| + 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);
|
| + GIF_PTR_NOT_NULL(gif_image_ptr->image_row_buf, gif_ptr);
|
| + 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_NOT_NULL(gif_ptr->img_decoder_ptr, gif_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 != NULL) {
|
| + *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;
|
| + }
|
| +#ifdef GIF_SUPPORT_GRAPHIC_CONTROL_EXTENSION
|
| + 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;
|
| + }
|
| +#endif
|
| + 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;
|
| +#ifdef GIF_SUPPORT_COMMENT_EXTENSION
|
| + 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;
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_PLAIN_TEXT_EXTENSION
|
| + 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;
|
| + }
|
| +#endif
|
| +#ifdef GIF_SUPPORT_APPLICATION_EXTENSION
|
| + if (FXSYS_memcmp(gif_ptr->header_ptr->version, "89a", 3) == 0 &&
|
| + gif_ptr->app_data) {
|
| + dst_buf[gif_ptr->cur_offset++] = GIF_SIG_EXTENSION;
|
| + dst_buf[gif_ptr->cur_offset++] = GIF_BLOCK_AE;
|
| + dst_buf[gif_ptr->cur_offset++] = 11;
|
| + FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_identify, 8);
|
| + gif_ptr->cur_offset += 8;
|
| + FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_authentication, 8);
|
| + gif_ptr->cur_offset += 3;
|
| + FXSYS_memcpy(&dst_buf[gif_ptr->cur_offset], gif_ptr->app_data,
|
| + gif_ptr->app_data_size);
|
| + gif_ptr->cur_offset += gif_ptr->app_data_size;
|
| + dst_buf[gif_ptr->cur_offset++] = 0;
|
| + }
|
| +#endif
|
| + 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;
|
| +}
|
|
|
Chromium Code Reviews
Issue 1641963002:
XFA: Fix DOS newlines, final round. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@xfa