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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "core/fxcodec/codec/codec_int.h" | 7 #include "core/fxcodec/codec/codec_int.h" |
8 #include "core/fxcodec/include/fx_codec.h" | 8 #include "core/fxcodec/include/fx_codec.h" |
9 #include "core/fxcodec/lgif/fx_gif.h" | 9 #include "core/fxcodec/lgif/fx_gif.h" |
10 #include "core/fxge/include/fx_dib.h" | 10 #include "core/fxge/include/fx_dib.h" |
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62 int32_t trans_index, | 62 int32_t trans_index, |
63 int32_t disposal_method, | 63 int32_t disposal_method, |
64 FX_BOOL interlace) { | 64 FX_BOOL interlace) { |
65 FXGIF_Context* p = (FXGIF_Context*)gif_ptr->context_ptr; | 65 FXGIF_Context* p = (FXGIF_Context*)gif_ptr->context_ptr; |
66 CCodec_GifModule* pModule = (CCodec_GifModule*)p->parent_ptr; | 66 CCodec_GifModule* pModule = (CCodec_GifModule*)p->parent_ptr; |
67 return pModule->InputRecordPositionBufCallback( | 67 return pModule->InputRecordPositionBufCallback( |
68 p->child_ptr, cur_pos, FX_RECT(left, top, left + width, top + height), | 68 p->child_ptr, cur_pos, FX_RECT(left, top, left + width, top + height), |
69 pal_num, pal_ptr, delay_time, user_input, trans_index, disposal_method, | 69 pal_num, pal_ptr, delay_time, user_input, trans_index, disposal_method, |
70 interlace); | 70 interlace); |
71 } | 71 } |
72 void* CCodec_GifModule::Start(void* pModule) { | 72 |
73 FXGIF_Context* p = (FXGIF_Context*)FX_Alloc(uint8_t, sizeof(FXGIF_Context)); | 73 FXGIF_Context* CCodec_GifModule::Start(void* pModule) { |
74 if (p == NULL) { | 74 FXGIF_Context* p = FX_Alloc(FXGIF_Context, 1); |
75 return NULL; | 75 if (!p) |
76 } | 76 return nullptr; |
| 77 |
77 FXSYS_memset(p, 0, sizeof(FXGIF_Context)); | 78 FXSYS_memset(p, 0, sizeof(FXGIF_Context)); |
78 p->m_AllocFunc = gif_alloc_func; | 79 p->m_AllocFunc = gif_alloc_func; |
79 p->m_FreeFunc = gif_free_func; | 80 p->m_FreeFunc = gif_free_func; |
80 p->gif_ptr = NULL; | 81 p->gif_ptr = nullptr; |
81 p->parent_ptr = (void*)this; | 82 p->parent_ptr = (void*)this; |
82 p->child_ptr = pModule; | 83 p->child_ptr = pModule; |
83 p->gif_ptr = gif_create_decompress(); | 84 p->gif_ptr = gif_create_decompress(); |
84 if (p->gif_ptr == NULL) { | 85 if (!p->gif_ptr) { |
85 FX_Free(p); | 86 FX_Free(p); |
86 return NULL; | 87 return nullptr; |
87 } | 88 } |
88 p->gif_ptr->context_ptr = (void*)p; | 89 p->gif_ptr->context_ptr = (void*)p; |
89 p->gif_ptr->err_ptr = m_szLastError; | 90 p->gif_ptr->err_ptr = m_szLastError; |
90 p->gif_ptr->gif_error_fn = gif_error_data; | 91 p->gif_ptr->gif_error_fn = gif_error_data; |
91 p->gif_ptr->gif_ask_buf_for_pal_fn = gif_ask_buf_for_pal; | 92 p->gif_ptr->gif_ask_buf_for_pal_fn = gif_ask_buf_for_pal; |
92 p->gif_ptr->gif_record_current_position_fn = gif_record_current_position; | 93 p->gif_ptr->gif_record_current_position_fn = gif_record_current_position; |
93 p->gif_ptr->gif_get_row_fn = gif_read_scanline; | 94 p->gif_ptr->gif_get_row_fn = gif_read_scanline; |
94 p->gif_ptr->gif_get_record_position_fn = gif_get_record_position; | 95 p->gif_ptr->gif_get_record_position_fn = gif_get_record_position; |
95 return p; | 96 return p; |
96 } | 97 } |
97 void CCodec_GifModule::Finish(void* pContext) { | 98 |
98 FXGIF_Context* p = (FXGIF_Context*)pContext; | 99 void CCodec_GifModule::Finish(FXGIF_Context* ctx) { |
99 if (p) { | 100 if (ctx) { |
100 gif_destroy_decompress(&p->gif_ptr); | 101 gif_destroy_decompress(&ctx->gif_ptr); |
101 p->m_FreeFunc(p); | 102 ctx->m_FreeFunc(ctx); |
102 } | 103 } |
103 } | 104 } |
104 int32_t CCodec_GifModule::ReadHeader(void* pContext, | 105 |
| 106 int32_t CCodec_GifModule::ReadHeader(FXGIF_Context* ctx, |
105 int* width, | 107 int* width, |
106 int* height, | 108 int* height, |
107 int* pal_num, | 109 int* pal_num, |
108 void** pal_pp, | 110 void** pal_pp, |
109 int* bg_index, | 111 int* bg_index, |
110 CFX_DIBAttribute* pAttribute) { | 112 CFX_DIBAttribute* pAttribute) { |
111 FXGIF_Context* p = (FXGIF_Context*)pContext; | 113 if (setjmp(ctx->gif_ptr->jmpbuf)) |
112 if (setjmp(p->gif_ptr->jmpbuf)) { | |
113 return 0; | 114 return 0; |
114 } | 115 |
115 int32_t ret = gif_read_header(p->gif_ptr); | 116 int32_t ret = gif_read_header(ctx->gif_ptr); |
116 if (ret != 1) { | 117 if (ret != 1) |
117 return ret; | 118 return ret; |
118 } | 119 |
119 if (pAttribute) { | 120 *width = ctx->gif_ptr->width; |
120 } | 121 *height = ctx->gif_ptr->height; |
121 *width = p->gif_ptr->width; | 122 *pal_num = ctx->gif_ptr->global_pal_num; |
122 *height = p->gif_ptr->height; | 123 *pal_pp = ctx->gif_ptr->global_pal_ptr; |
123 *pal_num = p->gif_ptr->global_pal_num; | 124 *bg_index = ctx->gif_ptr->bc_index; |
124 *pal_pp = p->gif_ptr->global_pal_ptr; | |
125 *bg_index = p->gif_ptr->bc_index; | |
126 return 1; | 125 return 1; |
127 } | 126 } |
128 int32_t CCodec_GifModule::LoadFrameInfo(void* pContext, int* frame_num) { | 127 |
129 FXGIF_Context* p = (FXGIF_Context*)pContext; | 128 int32_t CCodec_GifModule::LoadFrameInfo(FXGIF_Context* ctx, int* frame_num) { |
130 if (setjmp(p->gif_ptr->jmpbuf)) { | 129 if (setjmp(ctx->gif_ptr->jmpbuf)) |
131 return 0; | 130 return 0; |
132 } | 131 |
133 int32_t ret = gif_get_frame(p->gif_ptr); | 132 int32_t ret = gif_get_frame(ctx->gif_ptr); |
134 if (ret != 1) { | 133 if (ret != 1) |
135 return ret; | 134 return ret; |
136 } | 135 |
137 *frame_num = gif_get_frame_num(p->gif_ptr); | 136 *frame_num = gif_get_frame_num(ctx->gif_ptr); |
138 return 1; | 137 return 1; |
139 } | 138 } |
140 int32_t CCodec_GifModule::LoadFrame(void* pContext, | 139 |
| 140 int32_t CCodec_GifModule::LoadFrame(FXGIF_Context* ctx, |
141 int frame_num, | 141 int frame_num, |
142 CFX_DIBAttribute* pAttribute) { | 142 CFX_DIBAttribute* pAttribute) { |
143 FXGIF_Context* p = (FXGIF_Context*)pContext; | 143 if (setjmp(ctx->gif_ptr->jmpbuf)) |
144 if (setjmp(p->gif_ptr->jmpbuf)) { | |
145 return 0; | 144 return 0; |
146 } | 145 |
147 int32_t ret = gif_load_frame(p->gif_ptr, frame_num); | 146 int32_t ret = gif_load_frame(ctx->gif_ptr, frame_num); |
148 if (ret == 1) { | 147 if (ret == 1) { |
149 if (pAttribute) { | 148 if (pAttribute) { |
150 pAttribute->m_nGifLeft = | 149 pAttribute->m_nGifLeft = |
151 p->gif_ptr->img_ptr_arr_ptr->GetAt(frame_num)->image_info_ptr->left; | 150 ctx->gif_ptr->img_ptr_arr_ptr->GetAt(frame_num)->image_info_ptr->left; |
152 pAttribute->m_nGifTop = | 151 pAttribute->m_nGifTop = |
153 p->gif_ptr->img_ptr_arr_ptr->GetAt(frame_num)->image_info_ptr->top; | 152 ctx->gif_ptr->img_ptr_arr_ptr->GetAt(frame_num)->image_info_ptr->top; |
154 pAttribute->m_fAspectRatio = p->gif_ptr->pixel_aspect; | 153 pAttribute->m_fAspectRatio = ctx->gif_ptr->pixel_aspect; |
155 if (p->gif_ptr->cmt_data_ptr) { | 154 if (ctx->gif_ptr->cmt_data_ptr) { |
156 const uint8_t* buf = | 155 const uint8_t* buf = |
157 (const uint8_t*)p->gif_ptr->cmt_data_ptr->GetBuffer(0); | 156 (const uint8_t*)ctx->gif_ptr->cmt_data_ptr->GetBuffer(0); |
158 uint32_t len = p->gif_ptr->cmt_data_ptr->GetLength(); | 157 uint32_t len = ctx->gif_ptr->cmt_data_ptr->GetLength(); |
159 if (len > 21) { | 158 if (len > 21) { |
160 uint8_t size = *buf++; | 159 uint8_t size = *buf++; |
161 if (size) { | 160 if (size) { |
162 pAttribute->m_strAuthor = CFX_ByteString(buf, size); | 161 pAttribute->m_strAuthor = CFX_ByteString(buf, size); |
163 } else { | 162 } else { |
164 pAttribute->m_strAuthor.Empty(); | 163 pAttribute->m_strAuthor.Empty(); |
165 } | 164 } |
166 buf += size; | 165 buf += size; |
167 size = *buf++; | 166 size = *buf++; |
168 if (size == 20) { | 167 if (size == 20) { |
169 FXSYS_memcpy(pAttribute->m_strTime, buf, size); | 168 FXSYS_memcpy(pAttribute->m_strTime, buf, size); |
170 } | 169 } |
171 } | 170 } |
172 } | 171 } |
173 } | 172 } |
174 } | 173 } |
175 return ret; | 174 return ret; |
176 } | 175 } |
177 uint32_t CCodec_GifModule::GetAvailInput(void* pContext, | 176 |
| 177 uint32_t CCodec_GifModule::GetAvailInput(FXGIF_Context* ctx, |
178 uint8_t** avial_buf_ptr) { | 178 uint8_t** avial_buf_ptr) { |
179 FXGIF_Context* p = (FXGIF_Context*)pContext; | 179 return gif_get_avail_input(ctx->gif_ptr, avial_buf_ptr); |
180 return gif_get_avail_input(p->gif_ptr, avial_buf_ptr); | |
181 } | 180 } |
182 void CCodec_GifModule::Input(void* pContext, | 181 |
| 182 void CCodec_GifModule::Input(FXGIF_Context* ctx, |
183 const uint8_t* src_buf, | 183 const uint8_t* src_buf, |
184 uint32_t src_size) { | 184 uint32_t src_size) { |
185 FXGIF_Context* p = (FXGIF_Context*)pContext; | 185 gif_input_buffer(ctx->gif_ptr, (uint8_t*)src_buf, src_size); |
186 gif_input_buffer(p->gif_ptr, (uint8_t*)src_buf, src_size); | |
187 } | 186 } |
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