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| author | Bo Xu <bo_xu@foxitsoftware.com> | 2014-10-28 23:03:33 -0700 |
|---|---|---|
| committer | Bo Xu <bo_xu@foxitsoftware.com> | 2014-11-03 11:10:11 -0800 |
| commit | fdc00a7042d912aafaabddae4d9c84199921ef23 (patch) | |
| tree | 32ab8ac91cc68d2cd15b9168782a71b3f3f5e7b9 /core/src/fxcodec/codec/fx_codec_bmp.cpp | |
| parent | e9b38fa38de2c95d8260be31c57d9272c4d127ed (diff) | |
| download | pdfium-fdc00a7042d912aafaabddae4d9c84199921ef23.tar.xz | |
Merge XFA to PDFium master at 4dc95e7 on 10/28/2014
Diffstat (limited to 'core/src/fxcodec/codec/fx_codec_bmp.cpp')
| -rw-r--r-- | core/src/fxcodec/codec/fx_codec_bmp.cpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/core/src/fxcodec/codec/fx_codec_bmp.cpp b/core/src/fxcodec/codec/fx_codec_bmp.cpp new file mode 100644 index 0000000000..4e974e2124 --- /dev/null +++ b/core/src/fxcodec/codec/fx_codec_bmp.cpp @@ -0,0 +1,124 @@ +// 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 "../../../include/fxcodec/fx_codec.h"
+#include "../../../include/fxge/fx_dib.h"
+#include "codec_int.h"
+#include "../lbmp/fx_bmp.h"
+struct FXBMP_Context {
+ bmp_decompress_struct_p bmp_ptr;
+ void* parent_ptr;
+ void* child_ptr;
+
+ void* (*m_AllocFunc)(unsigned int);
+ void (*m_FreeFunc)(void*);
+};
+extern "C" {
+ static void* _bmp_alloc_func(unsigned int size)
+ {
+ return FX_Alloc(char, size);
+ }
+ static void _bmp_free_func(void* p)
+ {
+ if(p != NULL) {
+ FX_Free(p);
+ }
+ }
+};
+static void _bmp_error_data(bmp_decompress_struct_p bmp_ptr, FX_LPCSTR err_msg)
+{
+ FXSYS_strncpy((char*)bmp_ptr->err_ptr, err_msg, BMP_MAX_ERROR_SIZE - 1);
+ longjmp(bmp_ptr->jmpbuf, 1);
+}
+static void _bmp_read_scanline(bmp_decompress_struct_p bmp_ptr, FX_INT32 row_num, FX_LPBYTE row_buf)
+{
+ FXBMP_Context* p = (FXBMP_Context*)bmp_ptr->context_ptr;
+ CCodec_BmpModule* pModule = (CCodec_BmpModule*)p->parent_ptr;
+ pModule->ReadScanlineCallback(p->child_ptr, row_num, row_buf);
+}
+static FX_BOOL _bmp_get_data_position(bmp_decompress_struct_p bmp_ptr, FX_DWORD rcd_pos)
+{
+ FXBMP_Context* p = (FXBMP_Context*)bmp_ptr->context_ptr;
+ CCodec_BmpModule* pModule = (CCodec_BmpModule*)p->parent_ptr;
+ return pModule->InputImagePositionBufCallback(p->child_ptr, rcd_pos);
+}
+void* CCodec_BmpModule::Start(void* pModule)
+{
+ FXBMP_Context* p = (FXBMP_Context*)FX_Alloc(FX_BYTE, sizeof(FXBMP_Context));
+ if (p == NULL) {
+ return NULL;
+ }
+ FXSYS_memset32(p, 0, sizeof(FXBMP_Context));
+ if(p == NULL) {
+ return NULL;
+ }
+ p->m_AllocFunc = _bmp_alloc_func;
+ p->m_FreeFunc = _bmp_free_func;
+ p->bmp_ptr = NULL;
+ p->parent_ptr = (void*)this;
+ p->child_ptr = pModule;
+ p->bmp_ptr = _bmp_create_decompress();
+ if (p->bmp_ptr == NULL) {
+ FX_Free(p);
+ return NULL;
+ }
+ p->bmp_ptr->context_ptr = (void*)p;
+ p->bmp_ptr->err_ptr = m_szLastError;
+ p->bmp_ptr->_bmp_error_fn = _bmp_error_data;
+ p->bmp_ptr->_bmp_get_row_fn = _bmp_read_scanline;
+ p->bmp_ptr->_bmp_get_data_position_fn = _bmp_get_data_position;
+ return p;
+}
+void CCodec_BmpModule::Finish(void* pContext)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ if(p != NULL) {
+ _bmp_destroy_decompress(&p->bmp_ptr);
+ p->m_FreeFunc(p);
+ }
+}
+FX_INT32 CCodec_BmpModule::ReadHeader(void* pContext, FX_INT32* width, FX_INT32* height, FX_BOOL* tb_flag, FX_INT32* components, FX_INT32* pal_num, FX_DWORD** pal_pp, CFX_DIBAttribute* pAttribute)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ if(setjmp(p->bmp_ptr->jmpbuf)) {
+ return 0;
+ }
+ FX_INT32 ret = _bmp_read_header(p->bmp_ptr);
+ if (ret != 1) {
+ return ret;
+ }
+ *width = p->bmp_ptr->width;
+ *height = p->bmp_ptr->height;
+ *tb_flag = p->bmp_ptr->imgTB_flag;
+ *components = p->bmp_ptr->components;
+ *pal_num = p->bmp_ptr->pal_num;
+ *pal_pp = p->bmp_ptr->pal_ptr;
+ if (pAttribute) {
+ pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER;
+ pAttribute->m_nXDPI = p->bmp_ptr->dpi_x;
+ pAttribute->m_nYDPI = p->bmp_ptr->dpi_y;
+ pAttribute->m_nBmpCompressType = p->bmp_ptr->compress_flag;
+ }
+ return 1;
+}
+FX_INT32 CCodec_BmpModule::LoadImage(void* pContext)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ if(setjmp(p->bmp_ptr->jmpbuf)) {
+ return 0;
+ }
+ return _bmp_decode_image(p->bmp_ptr);
+}
+FX_DWORD CCodec_BmpModule::GetAvailInput(void* pContext, FX_LPBYTE* avial_buf_ptr)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ return _bmp_get_avail_input(p->bmp_ptr, avial_buf_ptr);
+}
+void CCodec_BmpModule::Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size)
+{
+ FXBMP_Context* p = (FXBMP_Context*)pContext;
+ _bmp_input_buffer(p->bmp_ptr, (FX_LPBYTE)src_buf, src_size);
+}
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