1 files changed, 125 insertions, 0 deletions
diff --git a/core/fxcodec/codec/fx_codec_bmp.cpp b/core/fxcodec/codec/fx_codec_bmp.cpp
new file mode 100644
index 0000000000..d2299d6e56
--- /dev/null
+++ b/core/fxcodec/codec/fx_codec_bmp.cpp
@@ -0,0 +1,125 @@
+// 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 "core/fxcodec/codec/codec_int.h"
+#include "core/fxcodec/lbmp/fx_bmp.h"
+#include "core/include/fxcodec/fx_codec.h"
+#include "core/include/fxge/fx_dib.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) {
+  FX_Free(p);
+}
+};
+static void bmp_error_data(bmp_decompress_struct_p bmp_ptr,
+                           const FX_CHAR* 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,
+                              int32_t row_num,
+                              uint8_t* 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(uint8_t, sizeof(FXBMP_Context));
+  if (p == NULL) {
+    return NULL;
+  }
+  FXSYS_memset(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) {
+    bmp_destroy_decompress(&p->bmp_ptr);
+    p->m_FreeFunc(p);
+  }
+}
+int32_t CCodec_BmpModule::ReadHeader(void* pContext,
+                                     int32_t* width,
+                                     int32_t* height,
+                                     FX_BOOL* tb_flag,
+                                     int32_t* components,
+                                     int32_t* pal_num,
+                                     FX_DWORD** pal_pp,
+                                     CFX_DIBAttribute* pAttribute) {
+  FXBMP_Context* p = (FXBMP_Context*)pContext;
+  if (setjmp(p->bmp_ptr->jmpbuf)) {
+    return 0;
+  }
+  int32_t 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;
+}
+int32_t 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,
+                                         uint8_t** 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,
+                             const uint8_t* src_buf,
+                             FX_DWORD src_size) {
+  FXBMP_Context* p = (FXBMP_Context*)pContext;
+  bmp_input_buffer(p->bmp_ptr, (uint8_t*)src_buf, src_size);
+}